Release v1.2.0

- add podinfo CLI to Quay docker image
- use podinfo CLI for health checks (Istio mTLS support)

.gitignore

@@ -18,3 +18,4 @@
 release/
 build/
 gcloud/
+dist/

.goreleaser.yml

@@ -0,0 +1,21 @@
+builds:
+  - main: ./cmd/podcli
+    binary: podcli
+    ldflags: -s -w -X github.com/stefanprodan/k8s-podinfo/pkg/version.REVISION={{.Commit}}
+    goos:
+      - windows
+      - darwin
+      - linux
+    goarch:
+      - amd64
+    env:
+      - CGO_ENABLED=0
+    ignore:
+      - goos: darwin
+        goarch: 386
+      - goos: windows
+        goarch: 386
+archive:
+  name_template: "{{ .Binary }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
+  files:
+  - none*

.travis.yml

@@ -2,7 +2,7 @@ sudo: required
 language: go
 
 go:
-  - 1.9.x
+  - 1.11.x
 
 services:
   - docker
@@ -14,19 +14,10 @@ addons:
 
 before_install:
   - make dep
-#  - curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl"
-#  - mkdir -p .bin; mv ./kubectl .bin/kubectl && chmod +x .bin/kubectl
-#  - export PATH="$TRAVIS_BUILD_DIR/.bin:$PATH"
-#  - wget https://cdn.rawgit.com/Mirantis/kubeadm-dind-cluster/master/fixed/dind-cluster-v1.8.sh && chmod +x dind-cluster-v1.8.sh && ./dind-cluster-v1.8.sh up
-#  - export PATH="$HOME/.kubeadm-dind-cluster:$PATH"
 
 script:
   - make test
   - make build docker-build
-#  - kubectl get nodes
-#  - kubectl run podinfo --image=podinfo:latest --port=9898
-#  - sleep 5
-#  - kubectl get pods
 
 after_success:
   - if [ -z "$DOCKER_USER" ]; then
@@ -41,3 +32,10 @@ after_success:
       echo $QUAY_PASS | docker login -u $QUAY_USER --password-stdin quay.io;
       make quay-push;
     fi
+
+deploy:
+  - provider: script
+    skip_cleanup: true
+    script: curl -sL http://git.io/goreleaser | bash
+    on:
+      tags: true

Dockerfile.ci

@@ -1,4 +1,4 @@
-FROM golang:1.9 as builder
+FROM golang:1.11 as builder
 
 RUN mkdir -p /go/src/github.com/stefanprodan/k8s-podinfo/
 
@@ -14,7 +14,11 @@ RUN gofmt -l -d $(find . -type f -name '*.go' -not -path "./vendor/*") && \
   -X github.com/stefanprodan/k8s-podinfo/pkg/version.REVISION=${GIT_COMMIT}" \
   -a -installsuffix cgo -o podinfo ./cmd/podinfo
 
-FROM alpine:3.7
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags "-s -w \
+      -X github.com/stefanprodan/k8s-podinfo/pkg/version.REVISION=${GIT_COMMIT}" \
+      -a -installsuffix cgo -o podcli ./cmd/podcli
+
+FROM alpine:3.8
 
 RUN addgroup -S app \
     && adduser -S -g app app \
@@ -24,6 +28,7 @@ RUN addgroup -S app \
 WORKDIR /home/app
 
 COPY --from=builder /go/src/github.com/stefanprodan/k8s-podinfo/podinfo .
+COPY --from=builder /go/src/github.com/stefanprodan/k8s-podinfo/podcli /usr/local/bin/podcli
 COPY ./ui ./ui
 RUN chown -R app:app ./
 

Gopkg.lock

@@ -3,36 +3,79 @@
 
 [[projects]]
   branch = "master"
+  digest = "1:d6afaeed1502aa28e80a4ed0981d570ad91b2579193404256ce672ed0a609e0d"
   name = "github.com/beorn7/perks"
   packages = ["quantile"]
+  pruneopts = "UT"
   revision = "3a771d992973f24aa725d07868b467d1ddfceafb"
 
 [[projects]]
+  digest = "1:b95738a1e6ace058b5b8544303c0871fc01d224ef0d672f778f696265d0f2917"
+  name = "github.com/chzyer/readline"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "62c6fe6193755f722b8b8788aa7357be55a50ff1"
+  version = "v1.4"
+
+[[projects]]
+  digest = "1:76dc72490af7174349349838f2fe118996381b31ea83243812a97e5a0fd5ed55"
+  name = "github.com/dgrijalva/jwt-go"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "06ea1031745cb8b3dab3f6a236daf2b0aa468b7e"
+  version = "v3.2.0"
+
+[[projects]]
+  digest = "1:865079840386857c809b72ce300be7580cb50d3d3129ce11bf9aa6ca2bc1934a"
+  name = "github.com/fatih/color"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "5b77d2a35fb0ede96d138fc9a99f5c9b6aef11b4"
+  version = "v1.7.0"
+
+[[projects]]
+  digest = "1:abeb38ade3f32a92943e5be54f55ed6d6e3b6602761d74b4aab4c9dd45c18abd"
   name = "github.com/fsnotify/fsnotify"
   packages = ["."]
+  pruneopts = "UT"
   revision = "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9"
   version = "v1.4.7"
 
 [[projects]]
+  digest = "1:97df918963298c287643883209a2c3f642e6593379f97ab400c2a2e219ab647d"
   name = "github.com/golang/protobuf"
   packages = ["proto"]
+  pruneopts = "UT"
   revision = "aa810b61a9c79d51363740d207bb46cf8e620ed5"
   version = "v1.2.0"
 
 [[projects]]
+  digest = "1:c79fb010be38a59d657c48c6ba1d003a8aa651fa56b579d959d74573b7dff8e1"
   name = "github.com/gorilla/context"
   packages = ["."]
+  pruneopts = "UT"
   revision = "08b5f424b9271eedf6f9f0ce86cb9396ed337a42"
   version = "v1.1.1"
 
 [[projects]]
+  digest = "1:e73f5b0152105f18bc131fba127d9949305c8693f8a762588a82a48f61756f5f"
   name = "github.com/gorilla/mux"
   packages = ["."]
+  pruneopts = "UT"
   revision = "e3702bed27f0d39777b0b37b664b6280e8ef8fbf"
   version = "v1.6.2"
 
+[[projects]]
+  digest = "1:7b5c6e2eeaa9ae5907c391a91c132abfd5c9e8a784a341b5625e750c67e6825d"
+  name = "github.com/gorilla/websocket"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "66b9c49e59c6c48f0ffce28c2d8b8a5678502c6d"
+  version = "v1.4.0"
+
 [[projects]]
   branch = "master"
+  digest = "1:a361611b8c8c75a1091f00027767f7779b29cb37c456a71b8f2604c88057ab40"
   name = "github.com/hashicorp/hcl"
   packages = [
     ".",
@@ -44,116 +87,180 @@
     "hcl/token",
     "json/parser",
     "json/scanner",
-    "json/token"
+    "json/token",
   ]
+  pruneopts = "UT"
   revision = "ef8a98b0bbce4a65b5aa4c368430a80ddc533168"
 
 [[projects]]
+  digest = "1:870d441fe217b8e689d7949fef6e43efbc787e50f200cb1e70dbca9204a1d6be"
+  name = "github.com/inconshreveable/mousetrap"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
+  version = "v1.0"
+
+[[projects]]
+  digest = "1:c568d7727aa262c32bdf8a3f7db83614f7af0ed661474b24588de635c20024c7"
   name = "github.com/magiconair/properties"
   packages = ["."]
+  pruneopts = "UT"
   revision = "c2353362d570a7bfa228149c62842019201cfb71"
   version = "v1.8.0"
 
 [[projects]]
+  digest = "1:c658e84ad3916da105a761660dcaeb01e63416c8ec7bc62256a9b411a05fcd67"
+  name = "github.com/mattn/go-colorable"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "167de6bfdfba052fa6b2d3664c8f5272e23c9072"
+  version = "v0.0.9"
+
+[[projects]]
+  digest = "1:0981502f9816113c9c8c4ac301583841855c8cf4da8c72f696b3ebedf6d0e4e5"
+  name = "github.com/mattn/go-isatty"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "6ca4dbf54d38eea1a992b3c722a76a5d1c4cb25c"
+  version = "v0.0.4"
+
+[[projects]]
+  digest = "1:ff5ebae34cfbf047d505ee150de27e60570e8c394b3b8fdbb720ff6ac71985fc"
   name = "github.com/matttproud/golang_protobuf_extensions"
   packages = ["pbutil"]
+  pruneopts = "UT"
   revision = "c12348ce28de40eed0136aa2b644d0ee0650e56c"
   version = "v1.0.1"
 
 [[projects]]
   branch = "master"
+  digest = "1:5ab79470a1d0fb19b041a624415612f8236b3c06070161a910562f2b2d064355"
   name = "github.com/mitchellh/mapstructure"
   packages = ["."]
+  pruneopts = "UT"
   revision = "f15292f7a699fcc1a38a80977f80a046874ba8ac"
 
 [[projects]]
+  digest = "1:95741de3af260a92cc5c7f3f3061e85273f5a81b5db20d4bd68da74bd521675e"
   name = "github.com/pelletier/go-toml"
   packages = ["."]
+  pruneopts = "UT"
   revision = "c01d1270ff3e442a8a57cddc1c92dc1138598194"
   version = "v1.2.0"
 
 [[projects]]
+  digest = "1:d14a5f4bfecf017cb780bdde1b6483e5deb87e12c332544d2c430eda58734bcb"
   name = "github.com/prometheus/client_golang"
   packages = [
     "prometheus",
-    "prometheus/promhttp"
+    "prometheus/promhttp",
   ]
+  pruneopts = "UT"
   revision = "c5b7fccd204277076155f10851dad72b76a49317"
   version = "v0.8.0"
 
 [[projects]]
   branch = "master"
+  digest = "1:2d5cd61daa5565187e1d96bae64dbbc6080dacf741448e9629c64fd93203b0d4"
   name = "github.com/prometheus/client_model"
   packages = ["go"]
+  pruneopts = "UT"
   revision = "5c3871d89910bfb32f5fcab2aa4b9ec68e65a99f"
 
 [[projects]]
   branch = "master"
+  digest = "1:63b68062b8968092eb86bedc4e68894bd096ea6b24920faca8b9dcf451f54bb5"
   name = "github.com/prometheus/common"
   packages = [
     "expfmt",
     "internal/bitbucket.org/ww/goautoneg",
-    "model"
+    "model",
   ]
+  pruneopts = "UT"
   revision = "c7de2306084e37d54b8be01f3541a8464345e9a5"
 
 [[projects]]
   branch = "master"
+  digest = "1:8c49953a1414305f2ff5465147ee576dd705487c35b15918fcd4efdc0cb7a290"
   name = "github.com/prometheus/procfs"
   packages = [
     ".",
     "internal/util",
     "nfs",
-    "xfs"
+    "xfs",
   ]
+  pruneopts = "UT"
   revision = "05ee40e3a273f7245e8777337fc7b46e533a9a92"
 
 [[projects]]
+  digest = "1:bd1ae00087d17c5a748660b8e89e1043e1e5479d0fea743352cda2f8dd8c4f84"
   name = "github.com/spf13/afero"
   packages = [
     ".",
-    "mem"
+    "mem",
   ]
+  pruneopts = "UT"
   revision = "787d034dfe70e44075ccc060d346146ef53270ad"
   version = "v1.1.1"
 
 [[projects]]
+  digest = "1:516e71bed754268937f57d4ecb190e01958452336fa73dbac880894164e91c1f"
   name = "github.com/spf13/cast"
   packages = ["."]
+  pruneopts = "UT"
   revision = "8965335b8c7107321228e3e3702cab9832751bac"
   version = "v1.2.0"
 
+[[projects]]
+  digest = "1:645cabccbb4fa8aab25a956cbcbdf6a6845ca736b2c64e197ca7cbb9d210b939"
+  name = "github.com/spf13/cobra"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "ef82de70bb3f60c65fb8eebacbb2d122ef517385"
+  version = "v0.0.3"
+
 [[projects]]
   branch = "master"
+  digest = "1:8a020f916b23ff574845789daee6818daf8d25a4852419aae3f0b12378ba432a"
   name = "github.com/spf13/jwalterweatherman"
   packages = ["."]
+  pruneopts = "UT"
   revision = "14d3d4c518341bea657dd8a226f5121c0ff8c9f2"
 
 [[projects]]
+  digest = "1:dab83a1bbc7ad3d7a6ba1a1cc1760f25ac38cdf7d96a5cdd55cd915a4f5ceaf9"
   name = "github.com/spf13/pflag"
   packages = ["."]
+  pruneopts = "UT"
   revision = "9a97c102cda95a86cec2345a6f09f55a939babf5"
   version = "v1.0.2"
 
 [[projects]]
+  digest = "1:4fc8a61287ccfb4286e1ca5ad2ce3b0b301d746053bf44ac38cf34e40ae10372"
   name = "github.com/spf13/viper"
   packages = ["."]
+  pruneopts = "UT"
   revision = "907c19d40d9a6c9bb55f040ff4ae45271a4754b9"
   version = "v1.1.0"
 
 [[projects]]
+  digest = "1:3c1a69cdae3501bf75e76d0d86dc6f2b0a7421bc205c0cb7b96b19eed464a34d"
   name = "go.uber.org/atomic"
   packages = ["."]
+  pruneopts = "UT"
   revision = "1ea20fb1cbb1cc08cbd0d913a96dead89aa18289"
   version = "v1.3.2"
 
 [[projects]]
+  digest = "1:60bf2a5e347af463c42ed31a493d817f8a72f102543060ed992754e689805d1a"
   name = "go.uber.org/multierr"
   packages = ["."]
+  pruneopts = "UT"
   revision = "3c4937480c32f4c13a875a1829af76c98ca3d40a"
   version = "v1.1.0"
 
 [[projects]]
+  digest = "1:c52caf7bd44f92e54627a31b85baf06a68333a196b3d8d241480a774733dcf8b"
   name = "go.uber.org/zap"
   packages = [
     ".",
@@ -161,18 +268,22 @@
     "internal/bufferpool",
     "internal/color",
     "internal/exit",
-    "zapcore"
+    "zapcore",
   ]
+  pruneopts = "UT"
   revision = "ff33455a0e382e8a81d14dd7c922020b6b5e7982"
   version = "v1.9.1"
 
 [[projects]]
   branch = "master"
+  digest = "1:e3e7f51633f98fce9404940f74dfd65cf306ee173ddf5a8b247c9c830e42b38a"
   name = "golang.org/x/sys"
   packages = ["unix"]
+  pruneopts = "UT"
   revision = "1a700e749ce29638d0bbcb531cce1094ea096bd3"
 
 [[projects]]
+  digest = "1:8029e9743749d4be5bc9f7d42ea1659471767860f0cdc34d37c3111bd308a295"
   name = "golang.org/x/text"
   packages = [
     "internal/gen",
@@ -180,20 +291,37 @@
     "internal/ucd",
     "transform",
     "unicode/cldr",
-    "unicode/norm"
+    "unicode/norm",
   ]
+  pruneopts = "UT"
   revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
   version = "v0.3.0"
 
 [[projects]]
+  digest = "1:342378ac4dcb378a5448dd723f0784ae519383532f5e70ade24132c4c8693202"
   name = "gopkg.in/yaml.v2"
   packages = ["."]
+  pruneopts = "UT"
   revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
   version = "v2.2.1"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "95fe64936946a78f8261f1054187eb37c9766694640a68915416d8ba9f192b6a"
+  input-imports = [
+    "github.com/chzyer/readline",
+    "github.com/dgrijalva/jwt-go",
+    "github.com/fatih/color",
+    "github.com/fsnotify/fsnotify",
+    "github.com/gorilla/mux",
+    "github.com/gorilla/websocket",
+    "github.com/prometheus/client_golang/prometheus",
+    "github.com/prometheus/client_golang/prometheus/promhttp",
+    "github.com/spf13/cobra",
+    "github.com/spf13/pflag",
+    "github.com/spf13/viper",
+    "go.uber.org/zap",
+    "go.uber.org/zap/zapcore",
+  ]
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -6,6 +6,10 @@
   name = "github.com/gorilla/mux"
   version = "v1.6.2"
 
+[[constraint]]
+  name = "github.com/gorilla/websocket"
+  version = "v1.4.0"
+
 [[constraint]]
   name = "go.uber.org/zap"
   version = "v1.9.1"
@@ -22,6 +26,14 @@
   name = "github.com/spf13/viper"
   version = "v1.1.0"
 
+[[constraint]]
+  name = "github.com/spf13/cobra"
+  version = "v0.0.3"
+
+[[constraint]]
+  name = "github.com/dgrijalva/jwt-go"
+  version = "v3.2.0"
+
 [prune]
   go-tests = true
   unused-packages = true

Makefile

@@ -73,9 +73,9 @@ docker-build: tar
 .PHONY: docker-push
 docker-push:
 	@echo Pushing: $(VERSION) to $(DOCKER_IMAGE_NAME)
-	for arch in $(LINUX_ARCH); do \ 
-	    docker push $(DOCKER_IMAGE_NAME):$(NAME)-$$arch ;\
-	done
+	for arch in $(LINUX_ARCH); do \
+        docker push $(DOCKER_IMAGE_NAME):$(NAME)-$$arch ;\
+    done
 	manifest-tool push from-args --platforms $(PLATFORMS) --template $(DOCKER_IMAGE_NAME):podinfo-ARCH --target $(DOCKER_IMAGE_NAME):$(VERSION)
 	manifest-tool push from-args --platforms $(PLATFORMS) --template $(DOCKER_IMAGE_NAME):podinfo-ARCH --target $(DOCKER_IMAGE_NAME):latest
 
@@ -95,7 +95,7 @@ gcr-build:
 
 .PHONY: test
 test:
-	cd pkg/server ; go test -v -race ./...
+	go test -v -race ./...
 
 .PHONY: dep
 dep:

README.md

@@ -11,7 +11,7 @@ Specifications:
 * Graceful shutdown on interrupt signals
 * File watcher for secrets and configmaps
 * Instrumented with Prometheus
-* Tracing with Istio and Jeger
+* Tracing with Istio and Jaeger
 * Structured logging with zap 
 * 12-factor app with viper
 * Fault injection (random errors and latency)
@@ -29,11 +29,15 @@ Web API:
 * `GET /status/{code}` returns the status code
 * `GET /panic` crashes the process with exit code 255
 * `POST /echo` forwards the call to the backend service and echos the posted content 
+* `GET /env` returns the environment variables as a JSON array
 * `GET /headers` returns a JSON with the request HTTP headers
 * `GET /delay/{seconds}` waits for the specified period
+* `POST /token` issues a JWT token valid for one minute `JWT=$(curl -sd 'anon' podinfo:9898/token | jq -r .token)`
+* `GET /token/validate` validates the JWT token `curl -H "Authorization: Bearer $JWT" podinfo:9898/token/validate`
 * `GET /configs` returns a JSON with configmaps and/or secrets mounted in the `config` volume
 * `POST /write` writes the posted content to disk at /data/hash and returns the SHA1 hash of the content
 * `GET /read/{hash}` returns the content of the file /data/hash if exists
+* `GET /ws/echo` echos content via websockets `podcli ws ws://localhost:9898/ws/echo`
 
 ### Guides
 

charts/podinfo-istio/Chart.yaml

@@ -1,12 +1,12 @@
 apiVersion: v1
-appVersion: "0.6.0"
-description: Podinfo Helm chart for Istio
+version: 1.2.0
+appVersion: 1.2.0
+engine: gotpl
 name: podinfo-istio
-version: 0.1.0
+description: Podinfo Helm chart for Istio
 home: https://github.com/stefanprodan/k8s-podinfo
+maintainers:
+- email: stefanprodan@users.noreply.github.com
+  name: stefanprodan
 sources:
 - https://github.com/stefanprodan/k8s-podinfo
-maintainers:
-  - name: stefanprodan
-    email: stefanprodan@users.noreply.github.com
-engine: gotpl

charts/podinfo-istio/backend.yaml

@@ -6,13 +6,13 @@ host: backend
 # stable release
 blue:
   replicas: 2
-  tag: "1.0.0"
+  tag: "1.1.0"
   backend: http://store:9898/api/echo
 
 # canary release
 green:
   replicas: 2
-  tag: "1.0.0"
+  tag: "1.1.0"
   routing:
     # target green callers
     - match:

charts/podinfo-istio/frontend.yaml

@@ -16,14 +16,14 @@ gateway:
 # stable release
 blue:
   replicas: 2
-  tag: "1.0.0"
-  message: "Greetings human! Gabi is THE BEST!!!!"
+  tag: "1.1.0"
+  message: "Greetings from the blue frontend"
   backend: http://backend:9898/api/echo
 
 # canary release
 green:
   replicas: 2
-  tag: "1.0.0"
+  tag: "1.1.0"
   routing:
     # target Safari
     - match:

charts/podinfo-istio/store.yaml

@@ -6,13 +6,13 @@ host: store
 # load balance 80/20 between blue and green
 blue:
   replicas: 2
-  tag: "1.0.0"
+  tag: "1.1.0"
   backend: https://httpbin.org/anything
   weight: 80
 
 green:
   replicas: 2
-  tag: "1.0.0"
+  tag: "1.1.0"
   backend: https://httpbin.org/anything
 
 externalServices:

charts/podinfo-istio/templates/blue-deployment.yaml

@@ -54,20 +54,20 @@ spec:
             - name: http
               containerPort: {{ .Values.containerPort }}
               protocol: TCP
-          readinessProbe:
-            httpGet:
-              path: /readyz
-              port: 9898
-            initialDelaySeconds: 1
-            periodSeconds: 2
-            failureThreshold: 1
           livenessProbe:
-            httpGet:
-              path: /healthz
-              port: 9898
-            initialDelaySeconds: 1
-            periodSeconds: 10
-            failureThreshold: 2
+            exec:
+              command:
+              - podcli
+              - check
+              - http
+              - localhost:{{ .Values.service.containerPort }}/healthz
+          readinessProbe:
+            exec:
+              command:
+              - podcli
+              - check
+              - http
+              - localhost:{{ .Values.service.containerPort }}/readyz
           volumeMounts:
           - name: data
             mountPath: /data

charts/podinfo-istio/templates/green-deployment.yaml

@@ -55,20 +55,20 @@ spec:
             - name: http
               containerPort: {{ .Values.containerPort }}
               protocol: TCP
-          readinessProbe:
-            httpGet:
-              path: /readyz
-              port: 9898
-            initialDelaySeconds: 1
-            periodSeconds: 2
-            failureThreshold: 1
           livenessProbe:
-            httpGet:
-              path: /healthz
-              port: 9898
-            initialDelaySeconds: 1
-            periodSeconds: 10
-            failureThreshold: 2
+            exec:
+              command:
+              - podcli
+              - check
+              - http
+              - localhost:{{ .Values.service.containerPort }}/healthz
+          readinessProbe:
+            exec:
+              command:
+              - podcli
+              - check
+              - http
+              - localhost:{{ .Values.service.containerPort }}/readyz
           volumeMounts:
           - name: data
             mountPath: /data

charts/podinfo-istio/values.yaml

@@ -1,6 +1,6 @@
 # Default values for podinfo-istio.
 
-# host can be an extarnal domain or a local one
+# host can be an external domain or a local one
 host: podinfo
 # if the host is an external domain must be exposed via the Gateway
 exposeHost: false
@@ -27,7 +27,7 @@ gateway:
 blue:
   replicas: 2
   repository: quay.io/stefanprodan/podinfo
-  tag: "1.0.0"
+  tag: "1.2.0"
   # green must have at at least one replica to set weight under 100
   weight: 100
   message:
@@ -41,7 +41,7 @@ blue:
 green:
   replicas: 0
   repository: quay.io/stefanprodan/podinfo
-  tag: "1.0.0"
+  tag: "1.2.0"
   message:
   backend:
   routing:

charts/podinfo/Chart.yaml

@@ -1,12 +1,12 @@
 apiVersion: v1
-appVersion: "1.0.0"
-description: Podinfo Helm chart for Kubernetes
+version: 1.2.0
+appVersion: 1.2.0
 name: podinfo
-version: 1.0.0
+engine: gotpl
+description: Podinfo Helm chart for Kubernetes
 home: https://github.com/stefanprodan/k8s-podinfo
+maintainers:
+- email: stefanprodan@users.noreply.github.com
+  name: stefanprodan
 sources:
 - https://github.com/stefanprodan/k8s-podinfo
-maintainers:
-  - name: stefanprodan
-    email: stefanprodan@users.noreply.github.com
-engine: gotpl

charts/podinfo/templates/deployment.yaml

@@ -57,20 +57,20 @@ spec:
             - name: http
               containerPort: {{ .Values.service.containerPort }}
               protocol: TCP
-          readinessProbe:
-            httpGet:
-              path: /readyz
-              port: 9898
-            initialDelaySeconds: 1
-            periodSeconds: 2
-            failureThreshold: 1
           livenessProbe:
-            httpGet:
-              path: /healthz
-              port: 9898
-            initialDelaySeconds: 1
-            periodSeconds: 10
-            failureThreshold: 2
+            exec:
+              command:
+              - podcli
+              - check
+              - http
+              - localhost:{{ .Values.service.containerPort }}/healthz
+          readinessProbe:
+            exec:
+              command:
+              - podcli
+              - check
+              - http
+              - localhost:{{ .Values.service.containerPort }}/readyz
           volumeMounts:
           - name: data
             mountPath: /data

charts/podinfo/values.yaml

@@ -12,7 +12,7 @@ faults:
 
 image:
   repository: quay.io/stefanprodan/podinfo
-  tag: 1.0.0
+  tag: 1.2.0
   pullPolicy: IfNotPresent
 
 service:

cmd/podcli/check.go

@@ -0,0 +1,245 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"net/http"
+	"net/url"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/spf13/cobra"
+	"go.uber.org/zap"
+)
+
+var (
+	retryCount int
+	retryDelay time.Duration
+	method     string
+	body       string
+	timeout    time.Duration
+)
+
+var checkCmd = &cobra.Command{
+	Use:   `check`,
+	Short: "Health check commands",
+	Long:  "Commands for running health checks",
+}
+
+var checkUrlCmd = &cobra.Command{
+	Use:     `http [address]`,
+	Short:   "HTTP(S) health check",
+	Example: `  check http https://httpbin.org/anything --method=POST --retry=2 --delay=2s --timeout=3s --body='{"test"=1}'`,
+	RunE:    runCheck,
+}
+
+var checkTcpCmd = &cobra.Command{
+	Use:     `tcp [address]`,
+	Short:   "TCP health check",
+	Example: `  check tcp httpbin.org:443 --retry=1 --delay=2s --timeout=2s`,
+	RunE:    runCheckTCP,
+}
+
+var checkCertCmd = &cobra.Command{
+	Use:     `cert [address]`,
+	Short:   "SSL/TLS certificate validity check",
+	Example: `  check cert httpbin.org`,
+	RunE:    runCheckCert,
+}
+
+func init() {
+	checkUrlCmd.Flags().StringVar(&method, "method", "GET", "HTTP method")
+	checkUrlCmd.Flags().StringVar(&body, "body", "", "HTTP POST/PUT content")
+	checkUrlCmd.Flags().IntVar(&retryCount, "retry", 0, "times to retry the HTTP call")
+	checkUrlCmd.Flags().DurationVar(&retryDelay, "delay", 1*time.Second, "wait duration between retries")
+	checkUrlCmd.Flags().DurationVar(&timeout, "timeout", 5*time.Second, "timeout")
+	checkCmd.AddCommand(checkUrlCmd)
+
+	checkTcpCmd.Flags().IntVar(&retryCount, "retry", 0, "times to retry the TCP check")
+	checkTcpCmd.Flags().DurationVar(&retryDelay, "delay", 1*time.Second, "wait duration between retries")
+	checkTcpCmd.Flags().DurationVar(&timeout, "timeout", 5*time.Second, "timeout")
+	checkCmd.AddCommand(checkTcpCmd)
+
+	checkCmd.AddCommand(checkCertCmd)
+
+	rootCmd.AddCommand(checkCmd)
+}
+
+func runCheck(cmd *cobra.Command, args []string) error {
+	if retryCount < 0 {
+		return fmt.Errorf("--retry is required")
+	}
+	if len(args) < 1 {
+		return fmt.Errorf("address is required! example: check http https://httpbin.org")
+	}
+
+	address := args[0]
+	if !strings.HasPrefix(address, "http://") && !strings.HasPrefix(address, "https://") {
+		address = fmt.Sprintf("http://%s", address)
+	}
+
+	for n := 0; n <= retryCount; n++ {
+		if n != 1 {
+			time.Sleep(retryDelay)
+		}
+
+		req, err := http.NewRequest(method, address, bytes.NewBuffer([]byte(body)))
+		if err != nil {
+			logger.Info("check failed",
+				zap.String("address", address),
+				zap.Error(err))
+			os.Exit(1)
+		}
+
+		ctx, cancel := context.WithTimeout(req.Context(), timeout)
+		resp, err := http.DefaultClient.Do(req.WithContext(ctx))
+		cancel()
+		if err != nil {
+			logger.Info("check failed",
+				zap.String("address", address),
+				zap.Error(err))
+			continue
+		}
+
+		if resp.Body != nil {
+			resp.Body.Close()
+		}
+
+		if resp.StatusCode >= 200 && resp.StatusCode < 400 {
+			logger.Info("check succeed",
+				zap.String("address", address),
+				zap.Int("status code", resp.StatusCode),
+				zap.String("response size", fmtContentLength(resp.ContentLength)))
+			os.Exit(0)
+		} else {
+			logger.Info("check failed",
+				zap.String("address", address),
+				zap.Int("status code", resp.StatusCode))
+			continue
+		}
+	}
+
+	os.Exit(1)
+	return nil
+}
+
+func runCheckTCP(cmd *cobra.Command, args []string) error {
+	if retryCount < 0 {
+		return fmt.Errorf("--retry is required")
+	}
+	if len(args) < 1 {
+		return fmt.Errorf("address is required! example: check tcp httpbin.org:80")
+	}
+	address := args[0]
+
+	for n := 0; n <= retryCount; n++ {
+		if n != 1 {
+			time.Sleep(retryDelay)
+		}
+
+		conn, err := net.DialTimeout("tcp", address, timeout)
+
+		if err != nil {
+			logger.Info("check failed",
+				zap.String("address", address),
+				zap.Error(err))
+			continue
+		}
+
+		conn.Close()
+		logger.Info("check succeed", zap.String("address", address))
+		os.Exit(0)
+
+	}
+
+	os.Exit(1)
+	return nil
+}
+
+func runCheckCert(cmd *cobra.Command, args []string) error {
+	if len(args) < 1 {
+		return fmt.Errorf("address is required! example: check cert httpbin.org")
+	}
+	host := args[0]
+	if !strings.HasPrefix(host, "https://") {
+		host = "https://" + host
+	}
+
+	u, err := url.Parse(host)
+	if err != nil {
+		logger.Info("check failed",
+			zap.String("address", host),
+			zap.Error(err))
+		os.Exit(1)
+	}
+
+	address := u.Hostname() + ":443"
+	ipConn, err := net.DialTimeout("tcp", address, 5*time.Second)
+	if err != nil {
+		logger.Info("check failed",
+			zap.String("address", address),
+			zap.Error(err))
+		os.Exit(1)
+
+	}
+
+	defer ipConn.Close()
+	conn := tls.Client(ipConn, &tls.Config{
+		InsecureSkipVerify: true,
+		ServerName:         u.Hostname(),
+	})
+	if err = conn.Handshake(); err != nil {
+		logger.Info("check failed",
+			zap.String("address", address),
+			zap.Error(err))
+		os.Exit(1)
+	}
+
+	defer conn.Close()
+	addr := conn.RemoteAddr()
+	_, _, err = net.SplitHostPort(addr.String())
+	if err != nil {
+		logger.Info("check failed",
+			zap.String("address", address),
+			zap.Error(err))
+		os.Exit(1)
+	}
+
+	cert := conn.ConnectionState().PeerCertificates[0]
+
+	timeNow := time.Now()
+	if timeNow.After(cert.NotAfter) {
+		logger.Info("check failed",
+			zap.String("address", address),
+			zap.String("issuer", cert.Issuer.CommonName),
+			zap.String("subject", cert.Subject.CommonName),
+			zap.Time("expired", cert.NotAfter))
+		os.Exit(1)
+	}
+
+	logger.Info("check succeed",
+		zap.String("address", address),
+		zap.String("issuer", cert.Issuer.CommonName),
+		zap.String("subject", cert.Subject.CommonName),
+		zap.Time("notAfter", cert.NotAfter),
+		zap.Time("notBefore", cert.NotBefore))
+
+	return nil
+}
+
+func fmtContentLength(b int64) string {
+	const unit = 1000
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+	div, exp := int64(unit), 0
+	for n := b / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %cB", float64(b)/float64(div), "kMGTPE"[exp])
+}

cmd/podcli/main.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"go.uber.org/zap"
+)
+
+var rootCmd = &cobra.Command{
+	Use:   "podcli",
+	Short: "podinfo command line",
+	Long: `
+podinfo command line utilities`,
+}
+
+var (
+	logger *zap.Logger
+)
+
+func main() {
+
+	var err error
+	logger, err = zap.NewDevelopment()
+	if err != nil {
+		log.Fatalf("can't initialize zap logger: %v", err)
+	}
+	defer logger.Sync()
+
+	rootCmd.SetArgs(os.Args[1:])
+	if err := rootCmd.Execute(); err != nil {
+		e := err.Error()
+		fmt.Println(strings.ToUpper(e[:1]) + e[1:])
+		os.Exit(1)
+	}
+}

cmd/podcli/version.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	"github.com/stefanprodan/k8s-podinfo/pkg/version"
+)
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}
+
+var versionCmd = &cobra.Command{
+	Use:   `version`,
+	Short: "Prints podcli version",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		fmt.Println(version.VERSION)
+		return nil
+	},
+}

cmd/podcli/ws.go

@@ -0,0 +1,143 @@
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+	"net/http"
+	"net/url"
+	"os"
+	"regexp"
+	"strings"
+
+	"github.com/chzyer/readline"
+	"github.com/fatih/color"
+	"github.com/gorilla/websocket"
+	"github.com/spf13/cobra"
+	"go.uber.org/zap"
+)
+
+var origin string
+
+func init() {
+	wsCmd.Flags().StringVarP(&origin, "origin", "o", "", "websocket origin")
+	rootCmd.AddCommand(wsCmd)
+}
+
+var wsCmd = &cobra.Command{
+	Use:     `ws [address]`,
+	Short:   "Websocket client",
+	Example: `  ws localhost:9898/ws/echo`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if len(args) < 1 {
+			return fmt.Errorf("address is required")
+		}
+
+		address := args[0]
+		if !strings.HasPrefix(address, "ws://") && !strings.HasPrefix(address, "wss://") {
+			address = fmt.Sprintf("ws://%s", address)
+		}
+
+		dest, err := url.Parse(address)
+		if err != nil {
+			return err
+		}
+		if origin != "" {
+		} else {
+			originURL := *dest
+			if dest.Scheme == "wss" {
+				originURL.Scheme = "https"
+			} else {
+				originURL.Scheme = "http"
+			}
+			origin = originURL.String()
+		}
+
+		err = connect(dest.String(), origin, &readline.Config{
+			Prompt: "> ",
+		})
+		if err != nil {
+			logger.Info("websocket closed", zap.Error(err))
+		}
+		return nil
+	},
+}
+
+type session struct {
+	ws      *websocket.Conn
+	rl      *readline.Instance
+	errChan chan error
+}
+
+func connect(url, origin string, rlConf *readline.Config) error {
+	headers := make(http.Header)
+	headers.Add("Origin", origin)
+
+	ws, _, err := websocket.DefaultDialer.Dial(url, headers)
+	if err != nil {
+		return err
+	}
+
+	rl, err := readline.NewEx(rlConf)
+	if err != nil {
+		return err
+	}
+	defer rl.Close()
+
+	sess := &session{
+		ws:      ws,
+		rl:      rl,
+		errChan: make(chan error),
+	}
+
+	go sess.readConsole()
+	go sess.readWebsocket()
+
+	return <-sess.errChan
+}
+
+func (s *session) readConsole() {
+	for {
+		line, err := s.rl.Readline()
+		if err != nil {
+			s.errChan <- err
+			return
+		}
+
+		err = s.ws.WriteMessage(websocket.TextMessage, []byte(line))
+		if err != nil {
+			s.errChan <- err
+			return
+		}
+	}
+}
+
+func bytesToFormattedHex(bytes []byte) string {
+	text := hex.EncodeToString(bytes)
+	return regexp.MustCompile("(..)").ReplaceAllString(text, "$1 ")
+}
+
+func (s *session) readWebsocket() {
+	rxSprintf := color.New(color.FgGreen).SprintfFunc()
+
+	for {
+		msgType, buf, err := s.ws.ReadMessage()
+		if err != nil {
+			fmt.Fprint(s.rl.Stdout(), rxSprintf("< %s\n", err.Error()))
+			os.Exit(1)
+			return
+		}
+
+		var text string
+		switch msgType {
+		case websocket.TextMessage:
+			text = string(buf)
+		case websocket.BinaryMessage:
+			text = bytesToFormattedHex(buf)
+		default:
+			s.errChan <- fmt.Errorf("unknown websocket frame type: %d", msgType)
+			return
+		}
+
+		fmt.Fprint(s.rl.Stdout(), rxSprintf("< %s\n", text))
+	}
+}

cmd/podinfo/main.go

@@ -36,7 +36,8 @@ func main() {
 	fs.Bool("random-error", false, "1/3 chances of a random response error")
 	fs.Int("stress-cpu", 0, "Number of CPU cores with 100 load")
 	fs.Int("stress-memory", 0, "MB of data to load into memory")
-	versionFlag := fs.Bool("version", false, "get version number")
+
+	versionFlag := fs.BoolP("version", "v", false, "get version number")
 
 	// parse flags
 	err := fs.Parse(os.Args[1:])
@@ -56,6 +57,7 @@ func main() {
 	viper.BindPFlags(fs)
 	viper.RegisterAlias("backendUrl", "backend-url")
 	hostname, _ := os.Hostname()
+	viper.SetDefault("jwt-secret", "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9")
 	viper.Set("hostname", hostname)
 	viper.Set("version", version.VERSION)
 	viper.Set("revision", version.REVISION)

deploy/auto-scaling/podinfo-dep.yaml

@@ -9,75 +9,41 @@ spec:
     metadata:
       labels:
         app: podinfo
+        #role: openfaas-system
       annotations:
         prometheus.io/scrape: 'true'
     spec:
       containers:
       - name: podinfod
-        image: stefanprodan/podinfo:0.0.9
-        imagePullPolicy: Always
+        image: quay.io/stefanprodan/podinfo:1.0.1
         command:
           - ./podinfo
-          - -port=9898
-          - -logtostderr=true
-          - -v=2
-        volumeMounts:
-          - name: metadata
-            mountPath: /etc/podinfod/metadata
-            readOnly: true
-          - name: resources
-            mountPath: /etc/podinfod/resources
-            readOnly: true
+          - --port=9898
+          - --level=debug
         ports:
-        - containerPort: 9898
+        - name: http
+          containerPort: 9898
           protocol: TCP
-        readinessProbe:
-          httpGet:
-            path: /readyz
-            port: 9898
-          initialDelaySeconds: 1
-          periodSeconds: 2
-          failureThreshold: 1
         livenessProbe:
-          httpGet:
-            path: /healthz
-            port: 9898
-          initialDelaySeconds: 1
-          periodSeconds: 3
-          failureThreshold: 2
+          exec:
+            command:
+            - /bin/sh
+            - -c
+            - wget --quiet --tries=1 --spider http://localhost:9898/healthz || exit 1
+        readinessProbe:
+          exec:
+            command:
+            - /bin/sh
+            - -c
+            - wget --quiet --tries=1 --spider http://localhost:9898/readyz || exit 1
         resources:
           requests:
             memory: "32Mi"
             cpu: "10m"
-          limits:
-            memory: "256Mi"
-            cpu: "100m"
-      volumes:
-        - name: metadata
-          downwardAPI:
-            items:
-              - path: "labels"
-                fieldRef:
-                  fieldPath: metadata.labels
-              - path: "annotations"
-                fieldRef:
-                  fieldPath: metadata.annotations
-        - name: resources
-          downwardAPI:
-            items:
-              - path: "cpu_limit"
-                resourceFieldRef:
-                  containerName: podinfod
-                  resource: limits.cpu
-              - path: "cpu_request"
-                resourceFieldRef:
-                  containerName: podinfod
-                  resource: requests.cpu
-              - path: "mem_limit"
-                resourceFieldRef:
-                  containerName: podinfod
-                  resource: limits.memory
-              - path: "mem_request"
-                resourceFieldRef:
-                  containerName: podinfod
-                  resource: requests.memory
+        env:
+          - name: color
+            value: "blue"
+          - name: message
+            value: "Greetings from podinfo blue"
+          - name: backendURL
+            value: "http://podinfo-backend:9898/backend"

deploy/auto-scaling/podinfo-svc-clusterip.yaml

@@ -2,13 +2,14 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: podinfo-clusterip
+  name: podinfo
   labels:
     app: podinfo
 spec:
   type: ClusterIP
   ports:
-    - port: 9898
+    - name: http
+      port: 9898
       targetPort: 9898
       protocol: TCP
   selector:

deploy/istio-system/openfaas-canary-virtual-service.yaml

@@ -0,0 +1,19 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: env
+  namespace: openfaas-fn
+spec:
+  hosts:
+  - env
+  http:
+  - route:
+    - destination:
+        host: env
+      weight: 90
+    - destination:
+        host: env-canary
+      weight: 10
+    timeout: 30s
+

deploy/istio-system/openfaas-mtls.yaml

@@ -0,0 +1,51 @@
+apiVersion: authentication.istio.io/v1alpha1
+kind: Policy
+metadata:
+  name: default
+  namespace: openfaas
+spec:
+  peers:
+  - mtls: {}
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: DestinationRule
+metadata:
+  name: default
+  namespace: openfaas
+spec:
+  host: "*.openfaas.svc.cluster.local"
+  trafficPolicy:
+    tls:
+      mode: ISTIO_MUTUAL
+---
+apiVersion: authentication.istio.io/v1alpha1
+kind: Policy
+metadata:
+  name: default
+  namespace: openfaas-fn
+spec:
+  peers:
+  - mtls: {}
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: DestinationRule
+metadata:
+  name: default
+  namespace: openfaas-fn
+spec:
+  host: "*.openfaas-fn.svc.cluster.local"
+  trafficPolicy:
+    tls:
+      mode: ISTIO_MUTUAL
+---
+apiVersion: authentication.istio.io/v1alpha1
+kind: Policy
+metadata:
+  name: openfaas-permissive
+  namespace: openfaas
+spec:
+  targets:
+  - name: gateway
+  peers:
+  - mtls:
+      mode: PERMISSIVE

deploy/istio-system/openfaas-ns.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    istio-injection: enabled
+  name: openfaas
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    istio-injection: enabled
+  name: openfaas-fn

deploy/istio-system/openfaas-policies.yaml

@@ -0,0 +1,55 @@
+apiVersion: config.istio.io/v1alpha2
+kind: denier
+metadata:
+  name: denyhandler
+  namespace: openfaas
+spec:
+  status:
+    code: 7
+    message: Not allowed
+---
+apiVersion: config.istio.io/v1alpha2
+kind: checknothing
+metadata:
+  name: denyrequest
+  namespace: openfaas
+spec:
+---
+apiVersion: config.istio.io/v1alpha2
+kind: rule
+metadata:
+  name: denyopenfaasfn
+  namespace: openfaas
+spec:
+  match: destination.namespace == "openfaas" && source.namespace == "openfaas-fn" && source.labels["role"] != "openfaas-system"
+  actions:
+  - handler: denyhandler.denier
+    instances: [ denyrequest.checknothing ]
+---
+apiVersion: config.istio.io/v1alpha2
+kind: denier
+metadata:
+  name: denyhandler
+  namespace: openfaas-fn
+spec:
+  status:
+    code: 7
+    message: Not allowed
+---
+apiVersion: config.istio.io/v1alpha2
+kind: checknothing
+metadata:
+  name: denyrequest
+  namespace: openfaas-fn
+spec:
+---
+apiVersion: config.istio.io/v1alpha2
+kind: rule
+metadata:
+  name: denyopenfaasfn
+  namespace: openfaas-fn
+spec:
+  match: destination.namespace == "openfaas-fn" && source.namespace != "openfaas" && source.labels["role"] != "openfaas-system"
+  actions:
+  - handler: denyhandler.denier
+    instances: [ denyrequest.checknothing ]

deploy/istio-system/openfaas-virtual-service.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: gateway
+  namespace: openfaas
+spec:
+  hosts:
+  - "openfaas.istio.weavedx.com"
+  gateways:
+  - public-gateway.istio-system.svc.cluster.local
+  http:
+  - route:
+    - destination:
+        host: gateway
+    timeout: 30s
+

docs/8-istio-openfaas.md

@@ -0,0 +1,478 @@
+# OpenFaaS + Istio 
+
+### Install Istio
+
+Download latest release:
+
+```bash
+curl -L https://git.io/getLatestIstio | sh -
+```
+
+Configure Istio with Prometheus, Jaeger and cert-manager:
+
+```yaml
+global:
+  nodePort: false
+  proxy:
+    includeIPRanges: "10.28.0.0/14,10.7.240.0/20"
+
+ingress:
+  enabled: false
+
+sidecarInjectorWebhook:
+  enabled: true
+  enableNamespacesByDefault: false
+
+gateways:
+  enabled: true
+
+grafana:
+  enabled: true
+
+prometheus:
+  enabled: true
+
+servicegraph:
+  enabled: true
+
+tracing:
+  enabled: true
+
+certmanager:
+  enabled: true
+```
+
+Save the above file as `istio-of.yaml` and install Istio with Helm:
+
+```bash
+helm upgrade --install istio ./install/kubernetes/helm/istio \
+--namespace=istio-system \
+-f ./istio-of.yaml
+``` 
+
+### Configure Istio Gateway with LE certs
+
+Istio Gateway:
+
+```yaml
+apiVersion: networking.istio.io/v1alpha3
+kind: Gateway
+metadata:
+  name: public-gateway
+  namespace: istio-system
+spec:
+  selector:
+    istio: ingressgateway
+  servers:
+  - port:
+      number: 80
+      name: http
+      protocol: HTTP
+    hosts:
+    - "*"
+    tls:
+      httpsRedirect: true
+  - port:
+      number: 443
+      name: https
+      protocol: HTTPS
+    hosts:
+    - "*"
+    tls:
+      mode: SIMPLE
+      privateKey: /etc/istio/ingressgateway-certs/tls.key
+      serverCertificate: /etc/istio/ingressgateway-certs/tls.crt
+```
+
+Find the gateway public IP:
+
+```bash
+IP=$(kubectl -n istio-system describe svc/istio-ingressgateway | grep 'Ingress' | awk '{print $NF}')
+```
+
+Create a zone in GCP Cloud DNS with the following records:
+
+```bash
+istio.example.com. A $IP
+*.istio.example.com. A $IP
+```
+
+Create a service account with Cloud DNS admin role (replace `my-gcp-project` with your project ID):
+
+```bash
+GCP_PROJECT=my-gcp-project
+
+gcloud iam service-accounts create dns-admin \
+--display-name=dns-admin \
+--project=${GCP_PROJECT}
+
+gcloud iam service-accounts keys create ./gcp-dns-admin.json \
+--iam-account=dns-admin@${GCP_PROJECT}.iam.gserviceaccount.com \
+--project=${GCP_PROJECT}
+
+gcloud projects add-iam-policy-binding ${GCP_PROJECT} \
+--member=serviceAccount:dns-admin@${GCP_PROJECT}.iam.gserviceaccount.com \
+--role=roles/dns.admin
+```
+
+Create a Kubernetes secret with the GCP Cloud DNS admin key:
+
+```bash
+kubectl create secret generic cert-manager-credentials \
+--from-file=./gcp-dns-admin.json \
+--namespace=istio-system
+```
+
+LE issuer for GCP Cloud DNS:
+
+```yaml
+apiVersion: certmanager.k8s.io/v1alpha1
+kind: Issuer
+metadata:
+  name: letsencrypt-prod
+  namespace: istio-system
+spec:
+  acme:
+    server: https://acme-v02.api.letsencrypt.org/directory
+    email: email@example.com
+    privateKeySecretRef:
+      name: letsencrypt-prod
+    dns01:
+      providers:
+      - name: cloud-dns
+        clouddns:
+          serviceAccountSecretRef:
+            name: cert-manager-credentials
+            key: gcp-dns-admin.json
+          project: my-gcp-project
+```
+
+Wildcard cert:
+
+```yaml
+apiVersion: certmanager.k8s.io/v1alpha1
+kind: Certificate
+metadata:
+  name: istio-gateway
+  namespace: istio-system
+spec:
+  secretname: istio-ingressgateway-certs
+  issuerRef:
+    name: letsencrypt-prod
+  commonName: "*.istio.example.com"
+  dnsNames:
+  - istio.example.com
+  acme:
+    config:
+    - dns01:
+        provider: cloud-dns
+      domains:
+      - "*.istio.example.com"
+      - "istio.example.com"
+```
+
+### Configure OpenFaaS mTLS and access policies
+
+Create the OpenFaaS namespaces:
+
+```yaml
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    istio-injection: enabled
+  name: openfaas
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    istio-injection: enabled
+  name: openfaas-fn
+```
+
+Create an Istio virtual service for OpenFaaS Gateway:
+
+```yaml
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: gateway
+  namespace: openfaas
+spec:
+  hosts:
+  - "openfaas.istio.example.com"
+  gateways:
+  - public-gateway.istio-system.svc.cluster.local
+  http:
+  - route:
+    - destination:
+        host: gateway
+    timeout: 30s
+```
+
+Enable mTLS on `openfaas` namespace:
+
+```yaml
+apiVersion: authentication.istio.io/v1alpha1
+kind: Policy
+metadata:
+  name: default
+  namespace: openfaas
+spec:
+  peers:
+  - mtls: {}
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: DestinationRule
+metadata:
+  name: default
+  namespace: openfaas
+spec:
+  host: "*.openfaas.svc.cluster.local"
+  trafficPolicy:
+    tls:
+      mode: ISTIO_MUTUAL
+```
+
+Allow plaintext traffic to OpenFaaS Gateway:
+
+```yaml
+apiVersion: authentication.istio.io/v1alpha1
+kind: Policy
+metadata:
+  name: permissive
+  namespace: openfaas
+spec:
+  targets:
+  - name: gateway
+  peers:
+  - mtls:
+      mode: PERMISSIVE
+```
+
+Enable mTLS on `openfaas-fn` namespace:
+
+```yaml
+apiVersion: authentication.istio.io/v1alpha1
+kind: Policy
+metadata:
+  name: default
+  namespace: openfaas-fn
+spec:
+  peers:
+  - mtls: {}
+---
+apiVersion: networking.istio.io/v1alpha3
+kind: DestinationRule
+metadata:
+  name: default
+  namespace: openfaas-fn
+spec:
+  host: "*.openfaas-fn.svc.cluster.local"
+  trafficPolicy:
+    tls:
+      mode: ISTIO_MUTUAL
+```
+
+Deny access to OpenFaaS core services from the `openfaas-fn` namespace except for system functions:
+
+```yaml
+apiVersion: config.istio.io/v1alpha2
+kind: denier
+metadata:
+  name: denyhandler
+  namespace: openfaas
+spec:
+  status:
+    code: 7
+    message: Not allowed
+---
+apiVersion: config.istio.io/v1alpha2
+kind: checknothing
+metadata:
+  name: denyrequest
+  namespace: openfaas
+spec:
+---
+apiVersion: config.istio.io/v1alpha2
+kind: rule
+metadata:
+  name: denyopenfaasfn
+  namespace: openfaas
+spec:
+  match: destination.namespace == "openfaas" && source.namespace == "openfaas-fn" && source.labels["role"] != "openfaas-system"
+  actions:
+  - handler: denyhandler.denier
+    instances: [ denyrequest.checknothing ]
+```
+
+Deny access to functions except for OpenFaaS core services:
+
+```yaml
+apiVersion: config.istio.io/v1alpha2
+kind: denier
+metadata:
+  name: denyhandler
+  namespace: openfaas-fn
+spec:
+  status:
+    code: 7
+    message: Not allowed
+---
+apiVersion: config.istio.io/v1alpha2
+kind: checknothing
+metadata:
+  name: denyrequest
+  namespace: openfaas-fn
+spec:
+---
+apiVersion: config.istio.io/v1alpha2
+kind: rule
+metadata:
+  name: denyopenfaasfn
+  namespace: openfaas-fn
+spec:
+  match: destination.namespace == "openfaas-fn" && source.namespace != "openfaas" && source.labels["role"] != "openfaas-system"
+  actions:
+  - handler: denyhandler.denier
+    instances: [ denyrequest.checknothing ]
+```
+
+### Install OpenFaaS
+
+Add the OpenFaaS `helm` chart:
+
+```bash
+$ helm repo add openfaas https://openfaas.github.io/faas-netes/
+```
+
+Create a secret named `basic-auth` in the `openfaas` namespace:
+
+```bash
+# generate a random password
+password=$(head -c 12 /dev/urandom | shasum| cut -d' ' -f1)
+
+kubectl -n openfaas create secret generic basic-auth \
+--from-literal=basic-auth-user=admin \
+--from-literal=basic-auth-password=$password 
+```
+
+Install OpenFaaS with Helm:
+
+```bash
+helm upgrade --install openfaas ./chart/openfaas \
+--namespace openfaas \
+--set functionNamespace=openfaas-fn \
+--set operator.create=true \
+--set securityContext=true \
+--set basic_auth=true \
+--set exposeServices=false \
+--set operator.createCRD=true
+```
+
+Wait for OpenFaaS Gateway to come online:
+
+```bash
+watch curl -v http://openfaas.istio.example.com/heathz 
+```
+
+Save your credentials in faas-cli store:
+
+```bash
+echo $password | faas-cli login -g https://openfaas.istio.example.com -u admin --password-stdin
+```
+
+### Canary deployments for OpenFaaS functions
+
+Create a general available release for the `env` function version 1.0.0:
+
+```yaml
+apiVersion: openfaas.com/v1alpha2
+kind: Function
+metadata:
+  name: env
+  namespace: openfaas-fn
+spec:
+  name: env
+  image: stefanprodan/of-env:1.0.0
+  resources:
+    requests:
+      memory: "32Mi"
+      cpu: "10m"
+  limits:
+    memory: "64Mi"
+    cpu: "100m"
+```
+
+Create a canary release for version 1.1.0:
+
+```yaml
+apiVersion: openfaas.com/v1alpha2
+kind: Function
+metadata:
+  name: env-canaray
+  namespace: openfaas-fn
+spec:
+  name: env-canaray
+  image: stefanprodan/of-env:1.1.0
+  resources:
+    requests:
+      memory: "32Mi"
+      cpu: "10m"
+  limits:
+    memory: "64Mi"
+    cpu: "100m"
+```
+
+Create an Istio virtual service with 10% traffic going to canary:
+
+```yaml
+apiVersion: networking.istio.io/v1alpha3
+kind: VirtualService
+metadata:
+  name: env
+  namespace: openfaas-fn
+spec:
+  hosts:
+  - env
+  http:
+  - route:
+    - destination:
+        host: env
+      weight: 90
+    - destination:
+        host: env-canary
+      weight: 10
+    timeout: 30s
+```
+
+Test traffic routing (one in ten calls should hit the canary release):
+
+```bash
+ while true; do sleep 1; curl -sS https://openfaas.istio.example.com/function/env | grep HOSTNAME; done 
+ 
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-59bf48fb9d-cjsjw
+HOSTNAME=env-canary-5dffdf4458-4vnn2
+```
+
+Tracing the general available release with Jaeger:
+
+![ga-trace](https://github.com/stefanprodan/k8s-podinfo/blob/master/docs/screens/openfaas-istio-ga-trace.png)
+
+Tracing the canary release:
+
+![canary-trace](https://github.com/stefanprodan/k8s-podinfo/blob/master/docs/screens/openfaas-istio-canary-trace.png)
+
+Monitor ga vs canary success rate and latency with Prometheus and Grafana:
+
+![canary-prom](https://github.com/stefanprodan/k8s-podinfo/blob/master/docs/screens/openfaas-istio-canary-prom.png)
+

docs/index.yaml

@@ -3,9 +3,9 @@ entries:
   ambassador:
   - apiVersion: v1
     appVersion: 0.29.0
-    created: 2018-08-21T18:51:24.168305347+03:00
+    created: 2018-09-11T22:17:53.254801678+03:00
     description: A Helm chart for Datawire Ambassador
-    digest: a30c8cb38e696b09fda8269ad8465ce6fec6100cfc108ca85ecbc85913ca5c7f
+    digest: 5d8b6d4f129fed12c005a0f8ff022d4a1aead489498c244f4764e0b0c3104477
     engine: gotpl
     maintainers:
     - email: stefanprodan@users.noreply.github.com
@@ -19,9 +19,9 @@ entries:
   grafana:
   - apiVersion: v1
     appVersion: "1.0"
-    created: 2018-08-21T18:51:24.169038265+03:00
+    created: 2018-09-11T22:17:53.255623303+03:00
     description: A Helm chart for Kubernetes
-    digest: e5b37ccdb6c477e36448cb1c1e02f35bbad5c67d3bbff712736cbdf21b48dd8c
+    digest: e5c4c01b886ca55c85adf3ff95cef5f6dd603833d7dae02e2c6da4235728da75
     name: grafana
     urls:
     - https://stefanprodan.github.io/k8s-podinfo/grafana-0.1.0.tgz
@@ -29,9 +29,9 @@ entries:
   loadtest:
   - apiVersion: v1
     appVersion: "1.0"
-    created: 2018-08-21T18:51:24.169257472+03:00
+    created: 2018-09-11T22:17:53.255836039+03:00
     description: Hey load test Helm chart for Kubernetes
-    digest: b9fc7ca83ae2c669a65d6cecf1ca4cf729b9db535179aab1d57c49bbeefd11b9
+    digest: 5a1bf6cba24ada79e10af0b3780dacf64e4c10283fff47165010ee868ed02482
     name: loadtest
     urls:
     - https://stefanprodan.github.io/k8s-podinfo/loadtest-0.1.0.tgz
@@ -39,17 +39,49 @@ entries:
   ngrok:
   - apiVersion: v1
     appVersion: "1.0"
-    created: 2018-08-21T18:51:24.169542029+03:00
+    created: 2018-09-11T22:17:53.256149474+03:00
     description: A Ngrok Helm chart for Kubernetes
-    digest: 7bf5ed2ef63ccd5efb76bcd9a086b04816a162c51d6ab592bccf58c283acd2ea
+    digest: 989439d77088b2d3092b0ac0c65a4835335ec8194b9dbf36b2347c9a3d28944f
     name: ngrok
     urls:
     - https://stefanprodan.github.io/k8s-podinfo/ngrok-0.1.0.tgz
     version: 0.1.0
   podinfo:
+  - apiVersion: v1
+    appVersion: 1.2.0
+    created: 2018-09-11T22:17:53.262775711+03:00
+    description: Podinfo Helm chart for Kubernetes
+    digest: 106e5c22922b6953381f9c73929d320128536c1a68c972323b860af5aa9182fe
+    engine: gotpl
+    home: https://github.com/stefanprodan/k8s-podinfo
+    maintainers:
+    - email: stefanprodan@users.noreply.github.com
+      name: stefanprodan
+    name: podinfo
+    sources:
+    - https://github.com/stefanprodan/k8s-podinfo
+    urls:
+    - https://stefanprodan.github.io/k8s-podinfo/podinfo-1.2.0.tgz
+    version: 1.2.0
+  - apiVersion: v1
+    appVersion: 1.1.0
+    created: 2018-09-11T22:17:53.261768578+03:00
+    description: Podinfo Helm chart for Kubernetes
+    digest: 973d60c629d7ae476776098ad6b654d78d91f91b3faa8bc016b94c73c42be094
+    engine: gotpl
+    home: https://github.com/stefanprodan/k8s-podinfo
+    maintainers:
+    - email: stefanprodan@users.noreply.github.com
+      name: stefanprodan
+    name: podinfo
+    sources:
+    - https://github.com/stefanprodan/k8s-podinfo
+    urls:
+    - https://stefanprodan.github.io/k8s-podinfo/podinfo-1.1.0.tgz
+    version: 1.1.0
   - apiVersion: v1
     appVersion: 1.0.0
-    created: 2018-08-21T18:51:24.173785478+03:00
+    created: 2018-09-11T22:17:53.260888709+03:00
     description: Podinfo Helm chart for Kubernetes
     digest: 82068727ba5b552341b14a980e954e27a8517f0ef76aab314c160b0f075e6de4
     engine: gotpl
@@ -65,7 +97,7 @@ entries:
     version: 1.0.0
   - apiVersion: v1
     appVersion: 0.6.0
-    created: 2018-08-21T18:51:24.173287096+03:00
+    created: 2018-09-11T22:17:53.259861051+03:00
     description: Podinfo Helm chart for Kubernetes
     digest: bd25a710eddb3985d3bd921a11022b5c68a04d37cf93a1a4aab17eeda35aa2f8
     engine: gotpl
@@ -81,7 +113,7 @@ entries:
     version: 0.2.2
   - apiVersion: v1
     appVersion: 0.5.1
-    created: 2018-08-21T18:51:24.17260811+03:00
+    created: 2018-09-11T22:17:53.259045852+03:00
     description: Podinfo Helm chart for Kubernetes
     digest: 631ca3e2db5553541a50b625f538e6a1f2a103c13aa8148fdd38baf2519e5235
     engine: gotpl
@@ -97,7 +129,7 @@ entries:
     version: 0.2.1
   - apiVersion: v1
     appVersion: 0.5.0
-    created: 2018-08-21T18:51:24.171814296+03:00
+    created: 2018-09-11T22:17:53.258116794+03:00
     description: Podinfo Helm chart for Kubernetes
     digest: dfe7cf44aef0d170549918b00966422a07e7611f9d0081fb34f5b5beb0641c00
     engine: gotpl
@@ -113,7 +145,7 @@ entries:
     version: 0.2.0
   - apiVersion: v1
     appVersion: 0.3.0
-    created: 2018-08-21T18:51:24.17094332+03:00
+    created: 2018-09-11T22:17:53.257068714+03:00
     description: Podinfo Helm chart for Kubernetes
     digest: 4865a2d8b269cf453935cda9661c2efb82c16411471f8c11221a6d03d9bb58b1
     engine: gotpl
@@ -128,9 +160,41 @@ entries:
     - https://stefanprodan.github.io/k8s-podinfo/podinfo-0.1.0.tgz
     version: 0.1.0
   podinfo-istio:
+  - apiVersion: v1
+    appVersion: 1.2.0
+    created: 2018-09-11T22:17:53.265466221+03:00
+    description: Podinfo Helm chart for Istio
+    digest: 8115e72f232f82eb3e6da1965364cfede7c069f95a627dddac45cfbe6cb90dc4
+    engine: gotpl
+    home: https://github.com/stefanprodan/k8s-podinfo
+    maintainers:
+    - email: stefanprodan@users.noreply.github.com
+      name: stefanprodan
+    name: podinfo-istio
+    sources:
+    - https://github.com/stefanprodan/k8s-podinfo
+    urls:
+    - https://stefanprodan.github.io/k8s-podinfo/podinfo-istio-1.2.0.tgz
+    version: 1.2.0
+  - apiVersion: v1
+    appVersion: 1.1.0
+    created: 2018-09-11T22:17:53.264848234+03:00
+    description: Podinfo Helm chart for Istio
+    digest: bcceb63ff780a8f0ba0b30997040e4e82170f9cce17c26ec817648ed024c83f5
+    engine: gotpl
+    home: https://github.com/stefanprodan/k8s-podinfo
+    maintainers:
+    - email: stefanprodan@users.noreply.github.com
+      name: stefanprodan
+    name: podinfo-istio
+    sources:
+    - https://github.com/stefanprodan/k8s-podinfo
+    urls:
+    - https://stefanprodan.github.io/k8s-podinfo/podinfo-istio-0.2.0.tgz
+    version: 0.2.0
   - apiVersion: v1
     appVersion: 0.6.0
-    created: 2018-08-21T18:51:24.174402168+03:00
+    created: 2018-09-11T22:17:53.263900568+03:00
     description: Podinfo Helm chart for Istio
     digest: f12f8aa1eca1328e9eaa30bd757f6ed3ff97205e2bf016a47265bc2de6a63d8f
     engine: gotpl
@@ -144,4 +208,4 @@ entries:
     urls:
     - https://stefanprodan.github.io/k8s-podinfo/podinfo-istio-0.1.0.tgz
     version: 0.1.0
-generated: 2018-08-21T18:51:24.167544997+03:00
+generated: 2018-09-11T22:17:53.253846309+03:00

pkg/api/echows.go

@@ -0,0 +1,82 @@
+package api
+
+import (
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gorilla/websocket"
+	"go.uber.org/zap"
+)
+
+var wsCon = websocket.Upgrader{}
+
+// Test: go run ./cmd/podcli/* ws localhost:9898/ws/echo
+func (s *Server) echoWsHandler(w http.ResponseWriter, r *http.Request) {
+	c, err := wsCon.Upgrade(w, r, nil)
+	if err != nil {
+		if err != nil {
+			s.logger.Warn("websocket upgrade error", zap.Error(err))
+			return
+		}
+	}
+	defer c.Close()
+	done := make(chan struct{})
+	defer close(done)
+	in := make(chan interface{})
+	defer close(in)
+	go s.writeWs(c, in)
+	go s.sendHostWs(c, in, done)
+	for {
+		_, message, err := c.ReadMessage()
+		if err != nil {
+			if !strings.Contains(err.Error(), "close") {
+				s.logger.Warn("websocket read error", zap.Error(err))
+			}
+			break
+		}
+		var response = struct {
+			Time    time.Time `json:"ts"`
+			Message string    `json:"msg"`
+		}{
+			Time:    time.Now(),
+			Message: string(message),
+		}
+		in <- response
+	}
+}
+
+func (s *Server) sendHostWs(ws *websocket.Conn, in chan interface{}, done chan struct{}) {
+	ticker := time.NewTicker(5 * time.Second)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-ticker.C:
+			var status = struct {
+				Time time.Time `json:"ts"`
+				Host string    `json:"server"`
+			}{
+				Time: time.Now(),
+				Host: s.config.Hostname,
+			}
+			in <- status
+		case <-done:
+			s.logger.Debug("websocket exit")
+			return
+		}
+	}
+}
+
+func (s *Server) writeWs(ws *websocket.Conn, in chan interface{}) {
+	for {
+		select {
+		case msg := <-in:
+			if err := ws.WriteJSON(msg); err != nil {
+				if !strings.Contains(err.Error(), "close") {
+					s.logger.Warn("websocket write error", zap.Error(err))
+				}
+				return
+			}
+		}
+	}
+}

pkg/api/env.go

@@ -0,0 +1,11 @@
+package api
+
+import (
+	"net/http"
+
+	"os"
+)
+
+func (s *Server) envHandler(w http.ResponseWriter, r *http.Request) {
+	s.JSONResponse(w, r, os.Environ())
+}

pkg/api/env_test.go

@@ -0,0 +1,35 @@
+package api
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"regexp"
+	"testing"
+)
+
+func TestEnvHandler(t *testing.T) {
+	req, err := http.NewRequest("GET", "/api/env", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	rr := httptest.NewRecorder()
+	srv := NewMockServer()
+	handler := http.HandlerFunc(srv.infoHandler)
+
+	handler.ServeHTTP(rr, req)
+
+	// Check the status code is what we expect.
+	if status := rr.Code; status != http.StatusOK {
+		t.Errorf("handler returned wrong status code: got %v want %v",
+			status, http.StatusOK)
+	}
+
+	// Check the response body is what we expect.
+	expected := ".*hostname.*"
+	r := regexp.MustCompile(expected)
+	if !r.MatchString(rr.Body.String()) {
+		t.Fatalf("handler returned unexpected body:\ngot \n%v \nwant \n%s",
+			rr.Body.String(), expected)
+	}
+}

pkg/api/server.go

@@ -36,6 +36,7 @@ type Config struct {
 	Hostname                  string        `mapstructure:"hostname"`
 	RandomDelay               bool          `mapstructure:"random-delay"`
 	RandomError               bool          `mapstructure:"random-error"`
+	JWTSecret                 string        `mapstructure:"jwt-secret"`
 }
 
 type Server struct {
@@ -61,6 +62,7 @@ func (s *Server) registerHandlers() {
 	s.router.HandleFunc("/", s.infoHandler).Methods("GET")
 	s.router.HandleFunc("/version", s.versionHandler).Methods("GET")
 	s.router.HandleFunc("/echo", s.echoHandler).Methods("POST")
+	s.router.HandleFunc("/env", s.envHandler).Methods("GET", "POST")
 	s.router.HandleFunc("/headers", s.echoHeadersHandler).Methods("GET", "POST")
 	s.router.HandleFunc("/delay/{wait:[0-9]+}", s.delayHandler).Methods("GET").Name("delay")
 	s.router.HandleFunc("/healthz", s.healthzHandler).Methods("GET")
@@ -72,8 +74,11 @@ func (s *Server) registerHandlers() {
 	s.router.HandleFunc("/store", s.storeWriteHandler).Methods("POST")
 	s.router.HandleFunc("/store/{hash}", s.storeReadHandler).Methods("GET").Name("store")
 	s.router.HandleFunc("/configs", s.configReadHandler).Methods("GET")
+	s.router.HandleFunc("/token", s.tokenGenerateHandler).Methods("POST")
+	s.router.HandleFunc("/token/validate", s.tokenValidateHandler).Methods("GET")
 	s.router.HandleFunc("/api/info", s.infoHandler).Methods("GET")
 	s.router.HandleFunc("/api/echo", s.echoHandler).Methods("POST")
+	s.router.HandleFunc("/ws/echo", s.echoWsHandler)
 }
 
 func (s *Server) registerMiddlewares() {

pkg/api/token.go

@@ -0,0 +1,102 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+
+	"io/ioutil"
+
+	"github.com/dgrijalva/jwt-go"
+	"go.uber.org/zap"
+)
+
+type jwtCustomClaims struct {
+	Name string `json:"name"`
+	jwt.StandardClaims
+}
+
+func (s *Server) tokenGenerateHandler(w http.ResponseWriter, r *http.Request) {
+	body, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		s.logger.Error("reading the request body failed", zap.Error(err))
+		s.ErrorResponse(w, r, "invalid request body", http.StatusBadRequest)
+		return
+	}
+	defer r.Body.Close()
+
+	user := "anonymous"
+	if len(body) > 0 {
+		user = string(body)
+	}
+
+	claims := &jwtCustomClaims{
+		user,
+		jwt.StandardClaims{
+			Issuer:    "podinfo",
+			ExpiresAt: time.Now().Add(time.Minute * 1).Unix(),
+		},
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	t, err := token.SignedString([]byte(s.config.JWTSecret))
+	if err != nil {
+		s.ErrorResponse(w, r, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	var result = struct {
+		Token     string    `json:"token"`
+		ExpiresAt time.Time `json:"expires_at"`
+	}{
+		Token:     t,
+		ExpiresAt: time.Unix(claims.StandardClaims.ExpiresAt, 0),
+	}
+
+	s.JSONResponse(w, r, result)
+}
+
+// Get: JWT=$(curl -s -d 'test' localhost:9898/token | jq -r .token)
+// Post: curl -H "Authorization: Bearer ${JWT}" localhost:9898/token/validate
+func (s *Server) tokenValidateHandler(w http.ResponseWriter, r *http.Request) {
+	authorizationHeader := r.Header.Get("authorization")
+	if authorizationHeader == "" {
+		s.ErrorResponse(w, r, "authorization bearer header required", http.StatusUnauthorized)
+		return
+	}
+	bearerToken := strings.Split(authorizationHeader, " ")
+	if len(bearerToken) != 2 || strings.ToLower(bearerToken[0]) != "bearer" {
+		s.ErrorResponse(w, r, "authorization bearer header required", http.StatusUnauthorized)
+		return
+	}
+
+	claims := jwtCustomClaims{}
+	token, err := jwt.ParseWithClaims(bearerToken[1], &claims, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, fmt.Errorf("invalid signing method")
+		}
+		return []byte(s.config.JWTSecret), nil
+	})
+	if err != nil {
+		s.ErrorResponse(w, r, err.Error(), http.StatusUnauthorized)
+		return
+	}
+
+	if token.Valid {
+		if claims.StandardClaims.Issuer != "podinfo" {
+			s.ErrorResponse(w, r, "invalid issuer", http.StatusUnauthorized)
+		} else {
+			var result = struct {
+				TokenName string    `json:"token_name"`
+				ExpiresAt time.Time `json:"expires_at"`
+			}{
+				TokenName: claims.Name,
+				ExpiresAt: time.Unix(claims.StandardClaims.ExpiresAt, 0),
+			}
+			s.JSONResponse(w, r, result)
+		}
+	} else {
+		s.ErrorResponse(w, r, "Invalid authorization token", http.StatusUnauthorized)
+	}
+}

pkg/version/version.go

@@ -1,4 +1,4 @@
 package version
 
-var VERSION = "1.0.0"
+var VERSION = "1.2.0"
 var REVISION = "unknown"

vendor/github.com/chzyer/readline/.gitignore

@@ -0,0 +1,2 @@
+*.exe
+*.tmp

vendor/github.com/chzyer/readline/.travis.yml

@@ -0,0 +1,10 @@
+language: go
+go:
+  - 1.5
+before_install:
+  - go get golang.org/x/crypto/ssh/terminal
+script:
+  - GOOS=windows go install github.com/chzyer/readline/example/...
+  - GOOS=linux go install github.com/chzyer/readline/example/...
+  - GOOS=darwin go install github.com/chzyer/readline/example/...
+  - go test -v

vendor/github.com/chzyer/readline/CHANGELOG.md

@@ -0,0 +1,58 @@
+# ChangeLog
+
+### 1.4 - 2016-07-25
+
+* [#60][60] Support dynamic autocompletion
+* Fix ANSI parser on Windows
+* Fix wrong column width in complete mode on Windows
+* Remove dependent package "golang.org/x/crypto/ssh/terminal"
+
+### 1.3 - 2016-05-09
+
+* [#38][38] add SetChildren for prefix completer interface
+* [#42][42] improve multiple lines compatibility
+* [#43][43] remove sub-package(runes) for gopkg compatiblity
+* [#46][46] Auto complete with space prefixed line
+* [#48][48]	support suspend process (ctrl+Z)
+* [#49][49] fix bug that check equals with previous command
+* [#53][53] Fix bug which causes integer divide by zero panicking when input buffer is empty
+
+### 1.2 - 2016-03-05
+
+* Add a demo for checking password strength [example/readline-pass-strength](https://github.com/chzyer/readline/blob/master/example/readline-pass-strength/readline-pass-strength.go), , written by [@sahib](https://github.com/sahib)
+* [#23][23], support stdin remapping
+* [#27][27], add a `UniqueEditLine` to `Config`, which will erase the editing line after user submited it, usually use in IM.
+* Add a demo for multiline [example/readline-multiline](https://github.com/chzyer/readline/blob/master/example/readline-multiline/readline-multiline.go) which can submit one SQL by multiple lines.
+* Supports performs even stdin/stdout is not a tty.
+* Add a new simple apis for single instance, check by [here](https://github.com/chzyer/readline/blob/master/std.go). It need to save history manually if using this api.
+* [#28][28], fixes the history is not working as expected.
+* [#33][33], vim mode now support `c`, `d`, `x (delete character)`, `r (replace character)`
+
+### 1.1 - 2015-11-20
+
+* [#12][12] Add support for key `<Delete>`/`<Home>`/`<End>`
+* Only enter raw mode as needed (calling `Readline()`), program will receive signal(e.g. Ctrl+C) if not interact with `readline`.
+* Bugs fixed for `PrefixCompleter`
+* Press `Ctrl+D` in empty line will cause `io.EOF` in error, Press `Ctrl+C` in anytime will cause `ErrInterrupt` instead of `io.EOF`, this will privodes a shell-like user experience.
+* Customable Interrupt/EOF prompt in `Config`
+* [#17][17] Change atomic package to use 32bit function to let it runnable on arm 32bit devices
+* Provides a new password user experience(`readline.ReadPasswordEx()`).
+
+### 1.0 - 2015-10-14
+
+* Initial public release.
+
+[12]: https://github.com/chzyer/readline/pull/12
+[17]: https://github.com/chzyer/readline/pull/17
+[23]: https://github.com/chzyer/readline/pull/23
+[27]: https://github.com/chzyer/readline/pull/27
+[28]: https://github.com/chzyer/readline/pull/28
+[33]: https://github.com/chzyer/readline/pull/33
+[38]: https://github.com/chzyer/readline/pull/38
+[42]: https://github.com/chzyer/readline/pull/42
+[43]: https://github.com/chzyer/readline/pull/43
+[46]: https://github.com/chzyer/readline/pull/46
+[48]: https://github.com/chzyer/readline/pull/48
+[49]: https://github.com/chzyer/readline/pull/49
+[53]: https://github.com/chzyer/readline/pull/53
+[60]: https://github.com/chzyer/readline/pull/60

vendor/github.com/chzyer/readline/LICENSE

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Chzyer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

vendor/github.com/chzyer/readline/README.md

@@ -0,0 +1,306 @@
+# readline
+
+[![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg)](LICENSE.md)
+[![Build Status](https://travis-ci.org/chzyer/readline.svg?branch=master)](https://travis-ci.org/chzyer/readline)
+[![GoDoc](https://godoc.org/github.com/chzyer/readline?status.svg)](https://godoc.org/github.com/chzyer/readline)
+[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/chzyer/readline?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) 
+[![OpenCollective](https://opencollective.com/readline/badge/backers.svg)](#backers)
+[![OpenCollective](https://opencollective.com/readline/badge/sponsors.svg)](#sponsors)
+
+Readline is A Pure Go Implementation of a libreadline-style Library.  
+The goal is to be a powerful alternater for GNU-Readline.
+
+
+**WHY:**
+Readline will support most of features which GNU Readline is supported, and provide a pure go environment and a MIT license.
+
+It can also provides shell-like interactives by using [flagly](https://github.com/chzyer/flagly) (demo: [flagly-shell](https://github.com/chzyer/flagly/blob/master/demo/flagly-shell/flagly-shell.go))
+
+# Demo
+
+![demo](https://raw.githubusercontent.com/chzyer/readline/assets/demo.gif)
+
+Also works fine in windows
+
+![demo windows](https://raw.githubusercontent.com/chzyer/readline/assets/windows.gif)
+
+
+* [example/readline-demo](https://github.com/chzyer/readline/blob/master/example/readline-demo/readline-demo.go) The source code about the demo above
+
+* [example/readline-im](https://github.com/chzyer/readline/blob/master/example/readline-im/readline-im.go) Example for how to write a IM program.
+
+* [example/readline-multiline](https://github.com/chzyer/readline/blob/master/example/readline-multiline/readline-multiline.go) Example for how to parse command which can submit by multiple time.
+
+* [example/readline-pass-strength](https://github.com/chzyer/readline/blob/master/example/readline-pass-strength/readline-pass-strength.go) A example about checking password strength, written by [@sahib](https://github.com/sahib)
+
+# Todo
+* Vi Mode is not completely finish
+* More funny examples
+* Support dumb/eterm-color terminal in emacs
+
+# Features
+* Support emacs/vi mode, almost all basic features that GNU-Readline is supported
+* zsh-style backward/forward history search
+* zsh-style completion
+* Readline auto refresh when others write to Stdout while editing (it needs specify the Stdout/Stderr provided by *readline.Instance to others).
+* Support colourful prompt in all platforms.
+
+# Usage
+
+* Import package
+
+```
+go get gopkg.in/readline.v1
+```
+
+or
+
+```
+go get github.com/chzyer/readline
+```
+
+* Simplest example
+
+```go
+import "gopkg.in/readline.v1"
+
+rl, err := readline.New("> ")
+if err != nil {
+	panic(err)
+}
+defer rl.Close()
+
+for {
+	line, err := rl.Readline()
+	if err != nil { // io.EOF, readline.ErrInterrupt
+		break
+	}
+	println(line)
+}
+```
+
+* Example with durable history
+
+```go
+rl, err := readline.NewEx(&readline.Config{
+	Prompt: "> ",
+	HistoryFile: "/tmp/readline.tmp",
+})
+if err != nil {
+	panic(err)
+}
+defer rl.Close()
+
+for {
+	line, err := rl.Readline()
+	if err != nil { // io.EOF, readline.ErrInterrupt
+		break
+	}
+	println(line)
+}
+```
+
+* Example with auto completion
+
+```go
+import (
+	"gopkg.in/readline.v1"
+)
+
+var completer = readline.NewPrefixCompleter(
+	readline.PcItem("say",
+		readline.PcItem("hello"),
+		readline.PcItem("bye"),
+	),
+	readline.PcItem("help"),
+)
+
+rl, err := readline.NewEx(&readline.Config{
+	Prompt:       "> ",
+	AutoComplete: completer,
+})
+if err != nil {
+	panic(err)
+}
+defer rl.Close()
+
+for {
+	line, err := rl.Readline()
+	if err != nil { // io.EOF, readline.ErrInterrupt
+		break
+	}
+	println(line)
+}
+```
+
+
+# Shortcut
+
+`Meta`+`B` means press `Esc` and `n` separately.  
+Users can change that in terminal simulator(i.e. iTerm2) to `Alt`+`B`  
+Notice: `Meta`+`B` is equals with `Alt`+`B` in windows.
+
+* Shortcut in normal mode
+
+| Shortcut           | Comment                                  |
+|--------------------|------------------------------------------|
+| `Ctrl`+`A`         | Beginning of line                        |
+| `Ctrl`+`B` / `←`   | Backward one character                   |
+| `Meta`+`B`         | Backward one word                        |
+| `Ctrl`+`C`         | Send io.EOF                              |
+| `Ctrl`+`D`         | Delete one character                     |
+| `Meta`+`D`         | Delete one word                          |
+| `Ctrl`+`E`         | End of line                              |
+| `Ctrl`+`F` / `→`   | Forward one character                    |
+| `Meta`+`F`         | Forward one word                         |
+| `Ctrl`+`G`         | Cancel                                   |
+| `Ctrl`+`H`         | Delete previous character                |
+| `Ctrl`+`I` / `Tab` | Command line completion                  |
+| `Ctrl`+`J`         | Line feed                                |
+| `Ctrl`+`K`         | Cut text to the end of line              |
+| `Ctrl`+`L`         | Clear screen                             |
+| `Ctrl`+`M`         | Same as Enter key                        |
+| `Ctrl`+`N` / `↓`   | Next line (in history)                   |
+| `Ctrl`+`P` / `↑`   | Prev line (in history)                   |
+| `Ctrl`+`R`         | Search backwards in history              |
+| `Ctrl`+`S`         | Search forwards in history               |
+| `Ctrl`+`T`         | Transpose characters                     |
+| `Meta`+`T`         | Transpose words (TODO)                   |
+| `Ctrl`+`U`         | Cut text to the beginning of line        |
+| `Ctrl`+`W`         | Cut previous word                        |
+| `Backspace`        | Delete previous character                |
+| `Meta`+`Backspace` | Cut previous word                        |
+| `Enter`            | Line feed                                |
+
+
+* Shortcut in Search Mode (`Ctrl`+`S` or `Ctrl`+`r` to enter this mode)
+
+| Shortcut                | Comment                                     |
+|-------------------------|---------------------------------------------|
+| `Ctrl`+`S`              | Search forwards in history                  |
+| `Ctrl`+`R`              | Search backwards in history                 |
+| `Ctrl`+`C` / `Ctrl`+`G` | Exit Search Mode and revert the history     |
+| `Backspace`             | Delete previous character                   |
+| Other                   | Exit Search Mode                            |
+
+* Shortcut in Complete Select Mode (double `Tab` to enter this mode)
+
+| Shortcut                | Comment                                     |
+|-------------------------|---------------------------------------------|
+| `Ctrl`+`F`              | Move Forward                                |
+| `Ctrl`+`B`              | Move Backward                               |
+| `Ctrl`+`N`              | Move to next line                           |
+| `Ctrl`+`P`              | Move to previous line                       |
+| `Ctrl`+`A`              | Move to the first candicate in current line |
+| `Ctrl`+`E`              | Move to the last candicate in current line  |
+| `Tab` / `Enter`         | Use the word on cursor to complete          |
+| `Ctrl`+`C` / `Ctrl`+`G` | Exit Complete Select Mode                   |
+| Other                   | Exit Complete Select Mode                   |
+
+# Tested with
+
+| Environment                   | $TERM  |
+|-------------------------------|--------|
+| Mac OS X iTerm2               | xterm  |
+| Mac OS X default Terminal.app | xterm  |
+| Mac OS X iTerm2 Screen        | screen |
+| Mac OS X iTerm2 Tmux          | screen |
+| Ubuntu Server 14.04 LTS       | linux  |
+| Centos 7                      | linux  |
+| Windows 10                    | -      |
+
+### Notice:
+* `Ctrl`+`A` is not working in `screen` because it used as a control command by default
+
+If you test it otherwhere, whether it works fine or not, please let me know!
+
+## Who is using Readline
+
+* [cockroachdb/cockroach](https://github.com/cockroachdb/cockroach)
+* [youtube/doorman](https://github.com/youtube/doorman)
+* [bom-d-van/harp](https://github.com/bom-d-van/harp)
+* [abiosoft/ishell](https://github.com/abiosoft/ishell)
+* [robertkrimen/otto](https://github.com/robertkrimen/otto)
+* [Netflix/hal-9001](https://github.com/Netflix/hal-9001)
+* [docker/go-p9p](https://github.com/docker/go-p9p)
+
+# Feedback
+
+If you have any questions, please submit a github issue and any pull requests is welcomed :)
+
+* [https://twitter.com/chzyer](https://twitter.com/chzyer)  
+* [http://weibo.com/2145262190](http://weibo.com/2145262190)  
+
+
+# Backers
+
+Love Readline? Help me keep it alive by donating funds to cover project expenses!<br />
+[[Become a backer](https://opencollective.com/readline#backer)]
+
+<a href="https://opencollective.com/readline/backer/0/website" target="_blank"><img src="https://opencollective.com/readline/backer/0/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/1/website" target="_blank"><img src="https://opencollective.com/readline/backer/1/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/2/website" target="_blank"><img src="https://opencollective.com/readline/backer/2/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/3/website" target="_blank"><img src="https://opencollective.com/readline/backer/3/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/4/website" target="_blank"><img src="https://opencollective.com/readline/backer/4/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/5/website" target="_blank"><img src="https://opencollective.com/readline/backer/5/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/6/website" target="_blank"><img src="https://opencollective.com/readline/backer/6/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/7/website" target="_blank"><img src="https://opencollective.com/readline/backer/7/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/8/website" target="_blank"><img src="https://opencollective.com/readline/backer/8/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/9/website" target="_blank"><img src="https://opencollective.com/readline/backer/9/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/10/website" target="_blank"><img src="https://opencollective.com/readline/backer/10/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/11/website" target="_blank"><img src="https://opencollective.com/readline/backer/11/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/12/website" target="_blank"><img src="https://opencollective.com/readline/backer/12/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/13/website" target="_blank"><img src="https://opencollective.com/readline/backer/13/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/14/website" target="_blank"><img src="https://opencollective.com/readline/backer/14/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/15/website" target="_blank"><img src="https://opencollective.com/readline/backer/15/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/16/website" target="_blank"><img src="https://opencollective.com/readline/backer/16/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/17/website" target="_blank"><img src="https://opencollective.com/readline/backer/17/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/18/website" target="_blank"><img src="https://opencollective.com/readline/backer/18/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/19/website" target="_blank"><img src="https://opencollective.com/readline/backer/19/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/20/website" target="_blank"><img src="https://opencollective.com/readline/backer/20/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/21/website" target="_blank"><img src="https://opencollective.com/readline/backer/21/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/22/website" target="_blank"><img src="https://opencollective.com/readline/backer/22/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/23/website" target="_blank"><img src="https://opencollective.com/readline/backer/23/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/24/website" target="_blank"><img src="https://opencollective.com/readline/backer/24/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/25/website" target="_blank"><img src="https://opencollective.com/readline/backer/25/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/26/website" target="_blank"><img src="https://opencollective.com/readline/backer/26/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/27/website" target="_blank"><img src="https://opencollective.com/readline/backer/27/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/28/website" target="_blank"><img src="https://opencollective.com/readline/backer/28/avatar.svg"></a>
+<a href="https://opencollective.com/readline/backer/29/website" target="_blank"><img src="https://opencollective.com/readline/backer/29/avatar.svg"></a>
+
+
+# Sponsors
+
+Become a sponsor and get your logo here on our Github page. [[Become a sponsor](https://opencollective.com/readline#sponsor)]
+
+<a href="https://opencollective.com/readline/sponsor/0/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/0/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/1/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/1/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/2/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/2/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/3/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/3/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/4/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/4/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/5/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/5/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/6/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/6/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/7/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/7/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/8/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/8/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/9/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/9/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/10/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/10/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/11/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/11/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/12/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/12/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/13/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/13/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/14/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/14/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/15/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/15/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/16/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/16/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/17/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/17/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/18/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/18/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/19/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/19/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/20/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/20/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/21/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/21/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/22/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/22/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/23/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/23/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/24/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/24/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/25/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/25/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/26/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/26/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/27/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/27/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/28/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/28/avatar.svg"></a>
+<a href="https://opencollective.com/readline/sponsor/29/website" target="_blank"><img src="https://opencollective.com/readline/sponsor/29/avatar.svg"></a>
+

vendor/github.com/chzyer/readline/ansi_windows.go

@@ -0,0 +1,246 @@
+// +build windows
+
+package readline
+
+import (
+	"bufio"
+	"io"
+	"strconv"
+	"strings"
+	"sync"
+	"unicode/utf8"
+	"unsafe"
+)
+
+const (
+	_                = uint16(0)
+	COLOR_FBLUE      = 0x0001
+	COLOR_FGREEN     = 0x0002
+	COLOR_FRED       = 0x0004
+	COLOR_FINTENSITY = 0x0008
+
+	COLOR_BBLUE      = 0x0010
+	COLOR_BGREEN     = 0x0020
+	COLOR_BRED       = 0x0040
+	COLOR_BINTENSITY = 0x0080
+
+	COMMON_LVB_UNDERSCORE = 0x8000
+)
+
+var ColorTableFg = []word{
+	0,                                       // 30: Black
+	COLOR_FRED,                              // 31: Red
+	COLOR_FGREEN,                            // 32: Green
+	COLOR_FRED | COLOR_FGREEN,               // 33: Yellow
+	COLOR_FBLUE,                             // 34: Blue
+	COLOR_FRED | COLOR_FBLUE,                // 35: Magenta
+	COLOR_FGREEN | COLOR_FBLUE,              // 36: Cyan
+	COLOR_FRED | COLOR_FBLUE | COLOR_FGREEN, // 37: White
+}
+
+var ColorTableBg = []word{
+	0,                                       // 40: Black
+	COLOR_BRED,                              // 41: Red
+	COLOR_BGREEN,                            // 42: Green
+	COLOR_BRED | COLOR_BGREEN,               // 43: Yellow
+	COLOR_BBLUE,                             // 44: Blue
+	COLOR_BRED | COLOR_BBLUE,                // 45: Magenta
+	COLOR_BGREEN | COLOR_BBLUE,              // 46: Cyan
+	COLOR_BRED | COLOR_BBLUE | COLOR_BGREEN, // 47: White
+}
+
+type ANSIWriter struct {
+	target io.Writer
+	wg     sync.WaitGroup
+	ctx    *ANSIWriterCtx
+	sync.Mutex
+}
+
+func NewANSIWriter(w io.Writer) *ANSIWriter {
+	a := &ANSIWriter{
+		target: w,
+		ctx:    NewANSIWriterCtx(w),
+	}
+	return a
+}
+
+func (a *ANSIWriter) Close() error {
+	a.wg.Wait()
+	return nil
+}
+
+type ANSIWriterCtx struct {
+	isEsc     bool
+	isEscSeq  bool
+	arg       []string
+	target    *bufio.Writer
+	wantFlush bool
+}
+
+func NewANSIWriterCtx(target io.Writer) *ANSIWriterCtx {
+	return &ANSIWriterCtx{
+		target: bufio.NewWriter(target),
+	}
+}
+
+func (a *ANSIWriterCtx) Flush() {
+	a.target.Flush()
+}
+
+func (a *ANSIWriterCtx) process(r rune) bool {
+	if a.wantFlush {
+		if r == 0 || r == CharEsc {
+			a.wantFlush = false
+			a.target.Flush()
+		}
+	}
+	if a.isEscSeq {
+		a.isEscSeq = a.ioloopEscSeq(a.target, r, &a.arg)
+		return true
+	}
+
+	switch r {
+	case CharEsc:
+		a.isEsc = true
+	case '[':
+		if a.isEsc {
+			a.arg = nil
+			a.isEscSeq = true
+			a.isEsc = false
+			break
+		}
+		fallthrough
+	default:
+		a.target.WriteRune(r)
+		a.wantFlush = true
+	}
+	return true
+}
+
+func (a *ANSIWriterCtx) ioloopEscSeq(w *bufio.Writer, r rune, argptr *[]string) bool {
+	arg := *argptr
+	var err error
+
+	if r >= 'A' && r <= 'D' {
+		count := short(GetInt(arg, 1))
+		info, err := GetConsoleScreenBufferInfo()
+		if err != nil {
+			return false
+		}
+		switch r {
+		case 'A': // up
+			info.dwCursorPosition.y -= count
+		case 'B': // down
+			info.dwCursorPosition.y += count
+		case 'C': // right
+			info.dwCursorPosition.x += count
+		case 'D': // left
+			info.dwCursorPosition.x -= count
+		}
+		SetConsoleCursorPosition(&info.dwCursorPosition)
+		return false
+	}
+
+	switch r {
+	case 'J':
+		killLines()
+	case 'K':
+		eraseLine()
+	case 'm':
+		color := word(0)
+		for _, item := range arg {
+			var c int
+			c, err = strconv.Atoi(item)
+			if err != nil {
+				w.WriteString("[" + strings.Join(arg, ";") + "m")
+				break
+			}
+			if c >= 30 && c < 40 {
+				color ^= COLOR_FINTENSITY
+				color |= ColorTableFg[c-30]
+			} else if c >= 40 && c < 50 {
+				color ^= COLOR_BINTENSITY
+				color |= ColorTableBg[c-40]
+			} else if c == 4 {
+				color |= COMMON_LVB_UNDERSCORE | ColorTableFg[7]
+			} else { // unknown code treat as reset
+				color = ColorTableFg[7]
+			}
+		}
+		if err != nil {
+			break
+		}
+		kernel.SetConsoleTextAttribute(stdout, uintptr(color))
+	case '\007': // set title
+	case ';':
+		if len(arg) == 0 || arg[len(arg)-1] != "" {
+			arg = append(arg, "")
+			*argptr = arg
+		}
+		return true
+	default:
+		if len(arg) == 0 {
+			arg = append(arg, "")
+		}
+		arg[len(arg)-1] += string(r)
+		*argptr = arg
+		return true
+	}
+	*argptr = nil
+	return false
+}
+
+func (a *ANSIWriter) Write(b []byte) (int, error) {
+	a.Lock()
+	defer a.Unlock()
+
+	off := 0
+	for len(b) > off {
+		r, size := utf8.DecodeRune(b[off:])
+		if size == 0 {
+			return off, io.ErrShortWrite
+		}
+		off += size
+		a.ctx.process(r)
+	}
+	a.ctx.Flush()
+	return off, nil
+}
+
+func killLines() error {
+	sbi, err := GetConsoleScreenBufferInfo()
+	if err != nil {
+		return err
+	}
+
+	size := (sbi.dwCursorPosition.y - sbi.dwSize.y) * sbi.dwSize.x
+	size += sbi.dwCursorPosition.x
+
+	var written int
+	kernel.FillConsoleOutputAttribute(stdout, uintptr(ColorTableFg[7]),
+		uintptr(size),
+		sbi.dwCursorPosition.ptr(),
+		uintptr(unsafe.Pointer(&written)),
+	)
+	return kernel.FillConsoleOutputCharacterW(stdout, uintptr(' '),
+		uintptr(size),
+		sbi.dwCursorPosition.ptr(),
+		uintptr(unsafe.Pointer(&written)),
+	)
+}
+
+func eraseLine() error {
+	sbi, err := GetConsoleScreenBufferInfo()
+	if err != nil {
+		return err
+	}
+
+	size := sbi.dwSize.x
+	sbi.dwCursorPosition.x = 0
+	var written int
+	return kernel.FillConsoleOutputCharacterW(stdout, uintptr(' '),
+		uintptr(size),
+		sbi.dwCursorPosition.ptr(),
+		uintptr(unsafe.Pointer(&written)),
+	)
+}

vendor/github.com/chzyer/readline/char.go

@@ -0,0 +1,36 @@
+package readline
+
+const (
+	CharLineStart = 1
+	CharBackward  = 2
+	CharInterrupt = 3
+	CharDelete    = 4
+	CharLineEnd   = 5
+	CharForward   = 6
+	CharBell      = 7
+	CharCtrlH     = 8
+	CharTab       = 9
+	CharCtrlJ     = 10
+	CharKill      = 11
+	CharCtrlL     = 12
+	CharEnter     = 13
+	CharNext      = 14
+	CharPrev      = 16
+	CharBckSearch = 18
+	CharFwdSearch = 19
+	CharTranspose = 20
+	CharCtrlU     = 21
+	CharCtrlW     = 23
+	CharCtrlZ     = 26
+	CharEsc       = 27
+	CharEscapeEx  = 91
+	CharBackspace = 127
+)
+
+const (
+	MetaBackward rune = -iota - 1
+	MetaForward
+	MetaDelete
+	MetaBackspace
+	MetaTranspose
+)

vendor/github.com/chzyer/readline/complete.go

@@ -0,0 +1,273 @@
+package readline
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+)
+
+type AutoCompleter interface {
+	// Readline will pass the whole line and current offset to it
+	// Completer need to pass all the candidates, and how long they shared the same characters in line
+	// Example:
+	//   [go, git, git-shell, grep]
+	//   Do("g", 1) => ["o", "it", "it-shell", "rep"], 1
+	//   Do("gi", 2) => ["t", "t-shell"], 2
+	//   Do("git", 3) => ["", "-shell"], 3
+	Do(line []rune, pos int) (newLine [][]rune, length int)
+}
+
+type opCompleter struct {
+	w     io.Writer
+	op    *Operation
+	width int
+
+	inCompleteMode  bool
+	inSelectMode    bool
+	candidate       [][]rune
+	candidateSource []rune
+	candidateOff    int
+	candidateChoise int
+	candidateColNum int
+}
+
+func newOpCompleter(w io.Writer, op *Operation, width int) *opCompleter {
+	return &opCompleter{
+		w:     w,
+		op:    op,
+		width: width,
+	}
+}
+
+func (o *opCompleter) doSelect() {
+	if len(o.candidate) == 1 {
+		o.op.buf.WriteRunes(o.candidate[0])
+		o.ExitCompleteMode(false)
+		return
+	}
+	o.nextCandidate(1)
+	o.CompleteRefresh()
+}
+
+func (o *opCompleter) nextCandidate(i int) {
+	o.candidateChoise += i
+	o.candidateChoise = o.candidateChoise % len(o.candidate)
+	if o.candidateChoise < 0 {
+		o.candidateChoise = len(o.candidate) + o.candidateChoise
+	}
+}
+
+func (o *opCompleter) OnComplete() {
+	if o.IsInCompleteSelectMode() {
+		o.doSelect()
+		return
+	}
+
+	buf := o.op.buf
+	rs := buf.Runes()
+
+	if o.IsInCompleteMode() && o.candidateSource != nil && runes.Equal(rs, o.candidateSource) {
+		o.EnterCompleteSelectMode()
+		o.doSelect()
+		return
+	}
+
+	o.ExitCompleteSelectMode()
+	o.candidateSource = rs
+	newLines, offset := o.op.cfg.AutoComplete.Do(rs, buf.idx)
+	if len(newLines) == 0 {
+		o.ExitCompleteMode(false)
+		return
+	}
+
+	// only Aggregate candidates in non-complete mode
+	if !o.IsInCompleteMode() {
+		if len(newLines) == 1 {
+			buf.WriteRunes(newLines[0])
+			o.ExitCompleteMode(false)
+			return
+		}
+
+		same, size := runes.Aggregate(newLines)
+		if size > 0 {
+			buf.WriteRunes(same)
+			o.ExitCompleteMode(false)
+			return
+		}
+	}
+
+	o.EnterCompleteMode(offset, newLines)
+}
+
+func (o *opCompleter) IsInCompleteSelectMode() bool {
+	return o.inSelectMode
+}
+
+func (o *opCompleter) IsInCompleteMode() bool {
+	return o.inCompleteMode
+}
+
+func (o *opCompleter) HandleCompleteSelect(r rune) bool {
+	next := true
+	switch r {
+	case CharEnter, CharCtrlJ:
+		next = false
+		o.op.buf.WriteRunes(o.op.candidate[o.op.candidateChoise])
+		o.ExitCompleteMode(false)
+	case CharLineStart:
+		num := o.candidateChoise % o.candidateColNum
+		o.nextCandidate(-num)
+	case CharLineEnd:
+		num := o.candidateColNum - o.candidateChoise%o.candidateColNum - 1
+		o.candidateChoise += num
+		if o.candidateChoise >= len(o.candidate) {
+			o.candidateChoise = len(o.candidate) - 1
+		}
+	case CharBackspace:
+		o.ExitCompleteSelectMode()
+		next = false
+	case CharTab, CharForward:
+		o.doSelect()
+	case CharBell, CharInterrupt:
+		o.ExitCompleteMode(true)
+		next = false
+	case CharNext:
+		tmpChoise := o.candidateChoise + o.candidateColNum
+		if tmpChoise >= o.getMatrixSize() {
+			tmpChoise -= o.getMatrixSize()
+		} else if tmpChoise >= len(o.candidate) {
+			tmpChoise += o.candidateColNum
+			tmpChoise -= o.getMatrixSize()
+		}
+		o.candidateChoise = tmpChoise
+	case CharBackward:
+		o.nextCandidate(-1)
+	case CharPrev:
+		tmpChoise := o.candidateChoise - o.candidateColNum
+		if tmpChoise < 0 {
+			tmpChoise += o.getMatrixSize()
+			if tmpChoise >= len(o.candidate) {
+				tmpChoise -= o.candidateColNum
+			}
+		}
+		o.candidateChoise = tmpChoise
+	default:
+		next = false
+		o.ExitCompleteSelectMode()
+	}
+	if next {
+		o.CompleteRefresh()
+		return true
+	}
+	return false
+}
+
+func (o *opCompleter) getMatrixSize() int {
+	line := len(o.candidate) / o.candidateColNum
+	if len(o.candidate)%o.candidateColNum != 0 {
+		line++
+	}
+	return line * o.candidateColNum
+}
+
+func (o *opCompleter) OnWidthChange(newWidth int) {
+	o.width = newWidth
+}
+
+func (o *opCompleter) CompleteRefresh() {
+	if !o.inCompleteMode {
+		return
+	}
+	lineCnt := o.op.buf.CursorLineCount()
+	colWidth := 0
+	for _, c := range o.candidate {
+		w := runes.WidthAll(c)
+		if w > colWidth {
+			colWidth = w
+		}
+	}
+	colWidth += o.candidateOff + 1
+	same := o.op.buf.RuneSlice(-o.candidateOff)
+
+	// -1 to avoid reach the end of line
+	width := o.width - 1
+	colNum := width / colWidth
+	colWidth += (width - (colWidth * colNum)) / colNum
+
+	o.candidateColNum = colNum
+	buf := bufio.NewWriter(o.w)
+	buf.Write(bytes.Repeat([]byte("\n"), lineCnt))
+
+	colIdx := 0
+	lines := 1
+	buf.WriteString("\033[J")
+	for idx, c := range o.candidate {
+		inSelect := idx == o.candidateChoise && o.IsInCompleteSelectMode()
+		if inSelect {
+			buf.WriteString("\033[30;47m")
+		}
+		buf.WriteString(string(same))
+		buf.WriteString(string(c))
+		buf.Write(bytes.Repeat([]byte(" "), colWidth-len(c)))
+
+		if inSelect {
+			buf.WriteString("\033[0m")
+		}
+
+		colIdx++
+		if colIdx == colNum {
+			buf.WriteString("\n")
+			lines++
+			colIdx = 0
+		}
+	}
+
+	// move back
+	fmt.Fprintf(buf, "\033[%dA\r", lineCnt-1+lines)
+	fmt.Fprintf(buf, "\033[%dC", o.op.buf.idx+o.op.buf.PromptLen())
+	buf.Flush()
+}
+
+func (o *opCompleter) aggCandidate(candidate [][]rune) int {
+	offset := 0
+	for i := 0; i < len(candidate[0]); i++ {
+		for j := 0; j < len(candidate)-1; j++ {
+			if i > len(candidate[j]) {
+				goto aggregate
+			}
+			if candidate[j][i] != candidate[j+1][i] {
+				goto aggregate
+			}
+		}
+		offset = i
+	}
+aggregate:
+	return offset
+}
+
+func (o *opCompleter) EnterCompleteSelectMode() {
+	o.inSelectMode = true
+	o.candidateChoise = -1
+	o.CompleteRefresh()
+}
+
+func (o *opCompleter) EnterCompleteMode(offset int, candidate [][]rune) {
+	o.inCompleteMode = true
+	o.candidate = candidate
+	o.candidateOff = offset
+	o.CompleteRefresh()
+}
+
+func (o *opCompleter) ExitCompleteSelectMode() {
+	o.inSelectMode = false
+	o.candidate = nil
+	o.candidateChoise = -1
+	o.candidateOff = -1
+	o.candidateSource = nil
+}
+
+func (o *opCompleter) ExitCompleteMode(revent bool) {
+	o.inCompleteMode = false
+	o.ExitCompleteSelectMode()
+}

vendor/github.com/chzyer/readline/complete_helper.go

@@ -0,0 +1,165 @@
+package readline
+
+import (
+	"bytes"
+	"strings"
+)
+
+// Caller type for dynamic completion
+type DynamicCompleteFunc func(string) []string
+
+type PrefixCompleterInterface interface {
+	Print(prefix string, level int, buf *bytes.Buffer)
+	Do(line []rune, pos int) (newLine [][]rune, length int)
+	GetName() []rune
+	GetChildren() []PrefixCompleterInterface
+	SetChildren(children []PrefixCompleterInterface)
+}
+
+type DynamicPrefixCompleterInterface interface {
+	PrefixCompleterInterface
+	IsDynamic() bool
+	GetDynamicNames(line []rune) [][]rune
+}
+
+type PrefixCompleter struct {
+	Name     []rune
+	Dynamic  bool
+	Callback DynamicCompleteFunc
+	Children []PrefixCompleterInterface
+}
+
+func (p *PrefixCompleter) Tree(prefix string) string {
+	buf := bytes.NewBuffer(nil)
+	p.Print(prefix, 0, buf)
+	return buf.String()
+}
+
+func Print(p PrefixCompleterInterface, prefix string, level int, buf *bytes.Buffer) {
+	if strings.TrimSpace(string(p.GetName())) != "" {
+		buf.WriteString(prefix)
+		if level > 0 {
+			buf.WriteString("├")
+			buf.WriteString(strings.Repeat("─", (level*4)-2))
+			buf.WriteString(" ")
+		}
+		buf.WriteString(string(p.GetName()) + "\n")
+		level++
+	}
+	for _, ch := range p.GetChildren() {
+		ch.Print(prefix, level, buf)
+	}
+}
+
+func (p *PrefixCompleter) Print(prefix string, level int, buf *bytes.Buffer) {
+	Print(p, prefix, level, buf)
+}
+
+func (p *PrefixCompleter) IsDynamic() bool {
+	return p.Dynamic
+}
+
+func (p *PrefixCompleter) GetName() []rune {
+	return p.Name
+}
+
+func (p *PrefixCompleter) GetDynamicNames(line []rune) [][]rune {
+	var names = [][]rune{}
+	for _, name := range p.Callback(string(line)) {
+		names = append(names, []rune(name+" "))
+	}
+	return names
+}
+
+func (p *PrefixCompleter) GetChildren() []PrefixCompleterInterface {
+	return p.Children
+}
+
+func (p *PrefixCompleter) SetChildren(children []PrefixCompleterInterface) {
+	p.Children = children
+}
+
+func NewPrefixCompleter(pc ...PrefixCompleterInterface) *PrefixCompleter {
+	return PcItem("", pc...)
+}
+
+func PcItem(name string, pc ...PrefixCompleterInterface) *PrefixCompleter {
+	name += " "
+	return &PrefixCompleter{
+		Name:     []rune(name),
+		Dynamic:  false,
+		Children: pc,
+	}
+}
+
+func PcItemDynamic(callback DynamicCompleteFunc, pc ...PrefixCompleterInterface) *PrefixCompleter {
+	return &PrefixCompleter{
+		Callback: callback,
+		Dynamic:  true,
+		Children: pc,
+	}
+}
+
+func (p *PrefixCompleter) Do(line []rune, pos int) (newLine [][]rune, offset int) {
+	return doInternal(p, line, pos, line)
+}
+
+func Do(p PrefixCompleterInterface, line []rune, pos int) (newLine [][]rune, offset int) {
+	return doInternal(p, line, pos, line)
+}
+
+func doInternal(p PrefixCompleterInterface, line []rune, pos int, origLine []rune) (newLine [][]rune, offset int) {
+	line = runes.TrimSpaceLeft(line[:pos])
+	goNext := false
+	var lineCompleter PrefixCompleterInterface
+	for _, child := range p.GetChildren() {
+		childNames := make([][]rune, 1)
+
+		childDynamic, ok := child.(DynamicPrefixCompleterInterface)
+		if ok && childDynamic.IsDynamic() {
+			childNames = childDynamic.GetDynamicNames(origLine)
+		} else {
+			childNames[0] = child.GetName()
+		}
+
+		for _, childName := range childNames {
+			if len(line) >= len(childName) {
+				if runes.HasPrefix(line, childName) {
+					if len(line) == len(childName) {
+						newLine = append(newLine, []rune{' '})
+					} else {
+						newLine = append(newLine, childName)
+					}
+					offset = len(childName)
+					lineCompleter = child
+					goNext = true
+				}
+			} else {
+				if runes.HasPrefix(childName, line) {
+					newLine = append(newLine, childName[len(line):])
+					offset = len(line)
+					lineCompleter = child
+				}
+			}
+		}
+	}
+
+	if len(newLine) != 1 {
+		return
+	}
+
+	tmpLine := make([]rune, 0, len(line))
+	for i := offset; i < len(line); i++ {
+		if line[i] == ' ' {
+			continue
+		}
+
+		tmpLine = append(tmpLine, line[i:]...)
+		return doInternal(lineCompleter, tmpLine, len(tmpLine), origLine)
+	}
+
+	if goNext {
+		return doInternal(lineCompleter, nil, 0, origLine)
+	}
+	return
+}

vendor/github.com/chzyer/readline/complete_segment.go

@@ -0,0 +1,82 @@
+package readline
+
+type SegmentCompleter interface {
+	// a
+	// |- a1
+	// |--- a11
+	// |- a2
+	// b
+	// input:
+	//   DoTree([], 0) [a, b]
+	//   DoTree([a], 1) [a]
+	//   DoTree([a, ], 0) [a1, a2]
+	//   DoTree([a, a], 1) [a1, a2]
+	//   DoTree([a, a1], 2) [a1]
+	//   DoTree([a, a1, ], 0) [a11]
+	//   DoTree([a, a1, a], 1) [a11]
+	DoSegment([][]rune, int) [][]rune
+}
+
+type dumpSegmentCompleter struct {
+	f func([][]rune, int) [][]rune
+}
+
+func (d *dumpSegmentCompleter) DoSegment(segment [][]rune, n int) [][]rune {
+	return d.f(segment, n)
+}
+
+func SegmentFunc(f func([][]rune, int) [][]rune) AutoCompleter {
+	return &SegmentComplete{&dumpSegmentCompleter{f}}
+}
+
+func SegmentAutoComplete(completer SegmentCompleter) *SegmentComplete {
+	return &SegmentComplete{
+		SegmentCompleter: completer,
+	}
+}
+
+type SegmentComplete struct {
+	SegmentCompleter
+}
+
+func RetSegment(segments [][]rune, cands [][]rune, idx int) ([][]rune, int) {
+	ret := make([][]rune, 0, len(cands))
+	lastSegment := segments[len(segments)-1]
+	for _, cand := range cands {
+		if !runes.HasPrefix(cand, lastSegment) {
+			continue
+		}
+		ret = append(ret, cand[len(lastSegment):])
+	}
+	return ret, idx
+}
+
+func SplitSegment(line []rune, pos int) ([][]rune, int) {
+	segs := [][]rune{}
+	lastIdx := -1
+	line = line[:pos]
+	pos = 0
+	for idx, l := range line {
+		if l == ' ' {
+			pos = 0
+			segs = append(segs, line[lastIdx+1:idx])
+			lastIdx = idx
+		} else {
+			pos++
+		}
+	}
+	segs = append(segs, line[lastIdx+1:])
+	return segs, pos
+}
+
+func (c *SegmentComplete) Do(line []rune, pos int) (newLine [][]rune, offset int) {
+
+	segment, idx := SplitSegment(line, pos)
+
+	cands := c.DoSegment(segment, idx)
+	newLine, offset = RetSegment(segment, cands, idx)
+	for idx := range newLine {
+		newLine[idx] = append(newLine[idx], ' ')
+	}
+	return newLine, offset
+}

vendor/github.com/chzyer/readline/debug.go

@@ -0,0 +1,29 @@
+package readline
+
+import (
+	"container/list"
+	"fmt"
+	"os"
+	"time"
+)
+
+func sleep(n int) {
+	Debug(n)
+	time.Sleep(2000 * time.Millisecond)
+}
+
+// print a linked list to Debug()
+func debugList(l *list.List) {
+	idx := 0
+	for e := l.Front(); e != nil; e = e.Next() {
+		Debug(idx, fmt.Sprintf("%+v", e.Value))
+		idx++
+	}
+}
+
+// append log info to another file
+func Debug(o ...interface{}) {
+	f, _ := os.OpenFile("debug.tmp", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+	fmt.Fprintln(f, o...)
+	f.Close()
+}

vendor/github.com/chzyer/readline/doc.go

@@ -0,0 +1,20 @@
+// Readline is a pure go implementation for GNU-Readline kind library.
+//
+// WHY: Readline will support most of features which GNU Readline is supported, and provide a pure go environment and a MIT license.
+//
+// example:
+// 	rl, err := readline.New("> ")
+// 	if err != nil {
+// 		panic(err)
+// 	}
+// 	defer rl.Close()
+//
+// 	for {
+// 		line, err := rl.Readline()
+// 		if err != nil { // io.EOF
+// 			break
+// 		}
+// 		println(line)
+// 	}
+//
+package readline

vendor/github.com/chzyer/readline/history.go

@@ -0,0 +1,296 @@
+package readline
+
+import (
+	"bufio"
+	"container/list"
+	"fmt"
+	"os"
+	"strings"
+)
+
+type hisItem struct {
+	Source  []rune
+	Version int64
+	Tmp     []rune
+}
+
+func (h *hisItem) Clean() {
+	h.Source = nil
+	h.Tmp = nil
+}
+
+type opHistory struct {
+	cfg        *Config
+	history    *list.List
+	historyVer int64
+	current    *list.Element
+	fd         *os.File
+}
+
+func newOpHistory(cfg *Config) (o *opHistory) {
+	o = &opHistory{
+		cfg:     cfg,
+		history: list.New(),
+	}
+	return o
+}
+
+func (o *opHistory) Reset() {
+	o.history = list.New()
+	o.current = nil
+}
+
+func (o *opHistory) IsHistoryClosed() bool {
+	return o.fd.Fd() == ^(uintptr(0))
+}
+
+func (o *opHistory) Init() {
+	if o.IsHistoryClosed() {
+		o.initHistory()
+	}
+}
+
+func (o *opHistory) initHistory() {
+	if o.cfg.HistoryFile != "" {
+		o.historyUpdatePath(o.cfg.HistoryFile)
+	}
+}
+
+// only called by newOpHistory
+func (o *opHistory) historyUpdatePath(path string) {
+	f, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_RDWR, 0666)
+	if err != nil {
+		return
+	}
+	o.fd = f
+	r := bufio.NewReader(o.fd)
+	total := 0
+	for ; ; total++ {
+		line, err := r.ReadString('\n')
+		if err != nil {
+			break
+		}
+		// ignore the empty line
+		line = strings.TrimSpace(line)
+		if len(line) == 0 {
+			continue
+		}
+		o.Push([]rune(line))
+		o.Compact()
+	}
+	if total > o.cfg.HistoryLimit {
+		o.Rewrite()
+	}
+	o.historyVer++
+	o.Push(nil)
+	return
+}
+
+func (o *opHistory) Compact() {
+	for o.history.Len() > o.cfg.HistoryLimit && o.history.Len() > 0 {
+		o.history.Remove(o.history.Front())
+	}
+}
+
+func (o *opHistory) Rewrite() {
+	if o.cfg.HistoryFile == "" {
+		return
+	}
+
+	tmpFile := o.cfg.HistoryFile + ".tmp"
+	fd, err := os.OpenFile(tmpFile, os.O_CREATE|os.O_WRONLY|os.O_TRUNC|os.O_APPEND, 0666)
+	if err != nil {
+		return
+	}
+
+	buf := bufio.NewWriter(fd)
+	for elem := o.history.Front(); elem != nil; elem = elem.Next() {
+		buf.WriteString(string(elem.Value.(*hisItem).Source))
+	}
+	buf.Flush()
+
+	// replace history file
+	if err = os.Rename(tmpFile, o.cfg.HistoryFile); err != nil {
+		fd.Close()
+		return
+	}
+
+	if o.fd != nil {
+		o.fd.Close()
+	}
+	// fd is write only, just satisfy what we need.
+	o.fd = fd
+}
+
+func (o *opHistory) Close() {
+	if o.fd != nil {
+		o.fd.Close()
+	}
+}
+
+func (o *opHistory) FindBck(isNewSearch bool, rs []rune, start int) (int, *list.Element) {
+	for elem := o.current; elem != nil; elem = elem.Prev() {
+		item := o.showItem(elem.Value)
+		if isNewSearch {
+			start += len(rs)
+		}
+		if elem == o.current {
+			if len(item) >= start {
+				item = item[:start]
+			}
+		}
+		idx := runes.IndexAllBck(item, rs)
+		if idx < 0 {
+			continue
+		}
+		return idx, elem
+	}
+	return -1, nil
+}
+
+func (o *opHistory) FindFwd(isNewSearch bool, rs []rune, start int) (int, *list.Element) {
+	for elem := o.current; elem != nil; elem = elem.Next() {
+		item := o.showItem(elem.Value)
+		if isNewSearch {
+			start -= len(rs)
+			if start < 0 {
+				start = 0
+			}
+		}
+		if elem == o.current {
+			if len(item)-1 >= start {
+				item = item[start:]
+			} else {
+				continue
+			}
+		}
+		idx := runes.IndexAll(item, rs)
+		if idx < 0 {
+			continue
+		}
+		if elem == o.current {
+			idx += start
+		}
+		return idx, elem
+	}
+	return -1, nil
+}
+
+func (o *opHistory) showItem(obj interface{}) []rune {
+	item := obj.(*hisItem)
+	if item.Version == o.historyVer {
+		return item.Tmp
+	}
+	return item.Source
+}
+
+func (o *opHistory) Prev() []rune {
+	if o.current == nil {
+		return nil
+	}
+	current := o.current.Prev()
+	if current == nil {
+		return nil
+	}
+	o.current = current
+	return runes.Copy(o.showItem(current.Value))
+}
+
+func (o *opHistory) Next() ([]rune, bool) {
+	if o.current == nil {
+		return nil, false
+	}
+	current := o.current.Next()
+	if current == nil {
+		return nil, false
+	}
+
+	o.current = current
+	return runes.Copy(o.showItem(current.Value)), true
+}
+
+func (o *opHistory) debug() {
+	Debug("-------")
+	for item := o.history.Front(); item != nil; item = item.Next() {
+		Debug(fmt.Sprintf("%+v", item.Value))
+	}
+}
+
+// save history
+func (o *opHistory) New(current []rune) (err error) {
+	current = runes.Copy(current)
+
+	// if just use last command without modify
+	// just clean lastest history
+	if back := o.history.Back(); back != nil {
+		prev := back.Prev()
+		if prev != nil {
+			if runes.Equal(current, prev.Value.(*hisItem).Source) {
+				o.current = o.history.Back()
+				o.current.Value.(*hisItem).Clean()
+				o.historyVer++
+				return nil
+			}
+		}
+	}
+
+	if len(current) == 0 {
+		o.current = o.history.Back()
+		if o.current != nil {
+			o.current.Value.(*hisItem).Clean()
+			o.historyVer++
+			return nil
+		}
+	}
+
+	if o.current != o.history.Back() {
+		// move history item to current command
+		currentItem := o.current.Value.(*hisItem)
+		// set current to last item
+		o.current = o.history.Back()
+
+		current = runes.Copy(currentItem.Tmp)
+	}
+
+	// err only can be a IO error, just report
+	err = o.Update(current, true)
+
+	// push a new one to commit current command
+	o.historyVer++
+	o.Push(nil)
+	return
+}
+
+func (o *opHistory) Revert() {
+	o.historyVer++
+	o.current = o.history.Back()
+}
+
+func (o *opHistory) Update(s []rune, commit bool) (err error) {
+	s = runes.Copy(s)
+	if o.current == nil {
+		o.Push(s)
+		o.Compact()
+		return
+	}
+	r := o.current.Value.(*hisItem)
+	r.Version = o.historyVer
+	if commit {
+		r.Source = s
+		if o.fd != nil {
+			// just report the error
+			_, err = o.fd.Write([]byte(string(r.Source) + "\n"))
+		}
+	} else {
+		r.Tmp = append(r.Tmp[:0], s...)
+	}
+	o.current.Value = r
+	o.Compact()
+	return
+}
+
+func (o *opHistory) Push(s []rune) {
+	s = runes.Copy(s)
+	elem := o.history.PushBack(&hisItem{Source: s})
+	o.current = elem
+}

vendor/github.com/chzyer/readline/operation.go

@@ -0,0 +1,479 @@
+package readline
+
+import (
+	"errors"
+	"io"
+)
+
+var (
+	ErrInterrupt = errors.New("Interrupt")
+)
+
+type InterruptError struct {
+	Line []rune
+}
+
+func (*InterruptError) Error() string {
+	return "Interrupted"
+}
+
+type Operation struct {
+	cfg     *Config
+	t       *Terminal
+	buf     *RuneBuffer
+	outchan chan []rune
+	errchan chan error
+	w       io.Writer
+
+	history *opHistory
+	*opSearch
+	*opCompleter
+	*opPassword
+	*opVim
+}
+
+type wrapWriter struct {
+	r      *Operation
+	t      *Terminal
+	target io.Writer
+}
+
+func (w *wrapWriter) Write(b []byte) (int, error) {
+	if !w.t.IsReading() {
+		return w.target.Write(b)
+	}
+
+	var (
+		n   int
+		err error
+	)
+	w.r.buf.Refresh(func() {
+		n, err = w.target.Write(b)
+	})
+
+	if w.r.IsSearchMode() {
+		w.r.SearchRefresh(-1)
+	}
+	if w.r.IsInCompleteMode() {
+		w.r.CompleteRefresh()
+	}
+	return n, err
+}
+
+func NewOperation(t *Terminal, cfg *Config) *Operation {
+	width := cfg.FuncGetWidth()
+	op := &Operation{
+		t:       t,
+		buf:     NewRuneBuffer(t, cfg.Prompt, cfg, width),
+		outchan: make(chan []rune),
+		errchan: make(chan error),
+	}
+	op.w = op.buf.w
+	op.SetConfig(cfg)
+	op.opVim = newVimMode(op)
+	op.opCompleter = newOpCompleter(op.buf.w, op, width)
+	op.opPassword = newOpPassword(op)
+	op.cfg.FuncOnWidthChanged(func() {
+		newWidth := cfg.FuncGetWidth()
+		op.opCompleter.OnWidthChange(newWidth)
+		op.opSearch.OnWidthChange(newWidth)
+		op.buf.OnWidthChange(newWidth)
+	})
+	go op.ioloop()
+	return op
+}
+
+func (o *Operation) SetPrompt(s string) {
+	o.buf.SetPrompt(s)
+}
+
+func (o *Operation) SetMaskRune(r rune) {
+	o.buf.SetMask(r)
+}
+
+func (o *Operation) ioloop() {
+	for {
+		keepInSearchMode := false
+		keepInCompleteMode := false
+		r := o.t.ReadRune()
+		if r == 0 { // io.EOF
+			if o.buf.Len() == 0 {
+				o.buf.Clean()
+				select {
+				case o.errchan <- io.EOF:
+				}
+				break
+			} else {
+				// if stdin got io.EOF and there is something left in buffer,
+				// let's flush them by sending CharEnter.
+				// And we will got io.EOF int next loop.
+				r = CharEnter
+			}
+		}
+		isUpdateHistory := true
+
+		if o.IsInCompleteSelectMode() {
+			keepInCompleteMode = o.HandleCompleteSelect(r)
+			if keepInCompleteMode {
+				continue
+			}
+
+			o.buf.Refresh(nil)
+			switch r {
+			case CharEnter, CharCtrlJ:
+				o.history.Update(o.buf.Runes(), false)
+				fallthrough
+			case CharInterrupt:
+				o.t.KickRead()
+				fallthrough
+			case CharBell:
+				continue
+			}
+		}
+
+		if o.IsEnableVimMode() {
+			r = o.HandleVim(r, o.t.ReadRune)
+			if r == 0 {
+				continue
+			}
+		}
+
+		switch r {
+		case CharBell:
+			if o.IsSearchMode() {
+				o.ExitSearchMode(true)
+				o.buf.Refresh(nil)
+			}
+			if o.IsInCompleteMode() {
+				o.ExitCompleteMode(true)
+				o.buf.Refresh(nil)
+			}
+		case CharTab:
+			if o.cfg.AutoComplete == nil {
+				o.t.Bell()
+				break
+			}
+			o.OnComplete()
+			keepInCompleteMode = true
+		case CharBckSearch:
+			o.SearchMode(S_DIR_BCK)
+			keepInSearchMode = true
+		case CharCtrlU:
+			o.buf.KillFront()
+		case CharFwdSearch:
+			o.SearchMode(S_DIR_FWD)
+			keepInSearchMode = true
+		case CharKill:
+			o.buf.Kill()
+			keepInCompleteMode = true
+		case MetaForward:
+			o.buf.MoveToNextWord()
+		case CharTranspose:
+			o.buf.Transpose()
+		case MetaBackward:
+			o.buf.MoveToPrevWord()
+		case MetaDelete:
+			o.buf.DeleteWord()
+		case CharLineStart:
+			o.buf.MoveToLineStart()
+		case CharLineEnd:
+			o.buf.MoveToLineEnd()
+		case CharBackspace, CharCtrlH:
+			if o.IsSearchMode() {
+				o.SearchBackspace()
+				keepInSearchMode = true
+				break
+			}
+
+			if o.buf.Len() == 0 {
+				o.t.Bell()
+				break
+			}
+			o.buf.Backspace()
+			if o.IsInCompleteMode() {
+				o.OnComplete()
+			}
+		case CharCtrlZ:
+			o.buf.Clean()
+			o.t.SleepToResume()
+			o.Refresh()
+		case CharCtrlL:
+			ClearScreen(o.w)
+			o.Refresh()
+		case MetaBackspace, CharCtrlW:
+			o.buf.BackEscapeWord()
+		case CharEnter, CharCtrlJ:
+			if o.IsSearchMode() {
+				o.ExitSearchMode(false)
+			}
+			o.buf.MoveToLineEnd()
+			var data []rune
+			if !o.cfg.UniqueEditLine {
+				o.buf.WriteRune('\n')
+				data = o.buf.Reset()
+				data = data[:len(data)-1] // trim \n
+			} else {
+				o.buf.Clean()
+				data = o.buf.Reset()
+			}
+			o.outchan <- data
+			if !o.cfg.DisableAutoSaveHistory {
+				// ignore IO error
+				_ = o.history.New(data)
+			} else {
+				isUpdateHistory = false
+			}
+		case CharBackward:
+			o.buf.MoveBackward()
+		case CharForward:
+			o.buf.MoveForward()
+		case CharPrev:
+			buf := o.history.Prev()
+			if buf != nil {
+				o.buf.Set(buf)
+			} else {
+				o.t.Bell()
+			}
+		case CharNext:
+			buf, ok := o.history.Next()
+			if ok {
+				o.buf.Set(buf)
+			} else {
+				o.t.Bell()
+			}
+		case CharDelete:
+			if o.buf.Len() > 0 || !o.IsNormalMode() {
+				o.t.KickRead()
+				if !o.buf.Delete() {
+					o.t.Bell()
+				}
+				break
+			}
+
+			// treat as EOF
+			if !o.cfg.UniqueEditLine {
+				o.buf.WriteString(o.cfg.EOFPrompt + "\n")
+			}
+			o.buf.Reset()
+			isUpdateHistory = false
+			o.history.Revert()
+			o.errchan <- io.EOF
+			if o.cfg.UniqueEditLine {
+				o.buf.Clean()
+			}
+		case CharInterrupt:
+			if o.IsSearchMode() {
+				o.t.KickRead()
+				o.ExitSearchMode(true)
+				break
+			}
+			if o.IsInCompleteMode() {
+				o.t.KickRead()
+				o.ExitCompleteMode(true)
+				o.buf.Refresh(nil)
+				break
+			}
+			o.buf.MoveToLineEnd()
+			o.buf.Refresh(nil)
+			hint := o.cfg.InterruptPrompt + "\n"
+			if !o.cfg.UniqueEditLine {
+				o.buf.WriteString(hint)
+			}
+			remain := o.buf.Reset()
+			if !o.cfg.UniqueEditLine {
+				remain = remain[:len(remain)-len([]rune(hint))]
+			}
+			isUpdateHistory = false
+			o.history.Revert()
+			o.errchan <- &InterruptError{remain}
+		default:
+			if o.IsSearchMode() {
+				o.SearchChar(r)
+				keepInSearchMode = true
+				break
+			}
+			o.buf.WriteRune(r)
+			if o.IsInCompleteMode() {
+				o.OnComplete()
+				keepInCompleteMode = true
+			}
+		}
+
+		if o.cfg.Listener != nil {
+			newLine, newPos, ok := o.cfg.Listener.OnChange(o.buf.Runes(), o.buf.Pos(), r)
+			if ok {
+				o.buf.SetWithIdx(newPos, newLine)
+			}
+		}
+
+		if !keepInSearchMode && o.IsSearchMode() {
+			o.ExitSearchMode(false)
+			o.buf.Refresh(nil)
+		} else if o.IsInCompleteMode() {
+			if !keepInCompleteMode {
+				o.ExitCompleteMode(false)
+				o.Refresh()
+			} else {
+				o.buf.Refresh(nil)
+				o.CompleteRefresh()
+			}
+		}
+		if isUpdateHistory && !o.IsSearchMode() {
+			// it will cause null history
+			o.history.Update(o.buf.Runes(), false)
+		}
+	}
+}
+
+func (o *Operation) Stderr() io.Writer {
+	return &wrapWriter{target: o.cfg.Stderr, r: o, t: o.t}
+}
+
+func (o *Operation) Stdout() io.Writer {
+	return &wrapWriter{target: o.cfg.Stdout, r: o, t: o.t}
+}
+
+func (o *Operation) String() (string, error) {
+	r, err := o.Runes()
+	return string(r), err
+}
+
+func (o *Operation) Runes() ([]rune, error) {
+	o.t.EnterRawMode()
+	defer o.t.ExitRawMode()
+
+	if o.cfg.Listener != nil {
+		o.cfg.Listener.OnChange(nil, 0, 0)
+	}
+	o.buf.Refresh(nil) // print prompt
+	o.t.KickRead()
+	select {
+	case r := <-o.outchan:
+		return r, nil
+	case err := <-o.errchan:
+		if e, ok := err.(*InterruptError); ok {
+			return e.Line, ErrInterrupt
+		}
+		return nil, err
+	}
+}
+
+func (o *Operation) PasswordEx(prompt string, l Listener) ([]byte, error) {
+	cfg := o.GenPasswordConfig()
+	cfg.Prompt = prompt
+	cfg.Listener = l
+	return o.PasswordWithConfig(cfg)
+}
+
+func (o *Operation) GenPasswordConfig() *Config {
+	return o.opPassword.PasswordConfig()
+}
+
+func (o *Operation) PasswordWithConfig(cfg *Config) ([]byte, error) {
+	if err := o.opPassword.EnterPasswordMode(cfg); err != nil {
+		return nil, err
+	}
+	defer o.opPassword.ExitPasswordMode()
+	return o.Slice()
+}
+
+func (o *Operation) Password(prompt string) ([]byte, error) {
+	return o.PasswordEx(prompt, nil)
+}
+
+func (o *Operation) SetTitle(t string) {
+	o.w.Write([]byte("\033[2;" + t + "\007"))
+}
+
+func (o *Operation) Slice() ([]byte, error) {
+	r, err := o.Runes()
+	if err != nil {
+		return nil, err
+	}
+	return []byte(string(r)), nil
+}
+
+func (o *Operation) Close() {
+	o.history.Close()
+}
+
+func (o *Operation) SetHistoryPath(path string) {
+	if o.history != nil {
+		o.history.Close()
+	}
+	o.cfg.HistoryFile = path
+	o.history = newOpHistory(o.cfg)
+}
+
+func (o *Operation) IsNormalMode() bool {
+	return !o.IsInCompleteMode() && !o.IsSearchMode()
+}
+
+func (op *Operation) SetConfig(cfg *Config) (*Config, error) {
+	if op.cfg == cfg {
+		return op.cfg, nil
+	}
+	if err := cfg.Init(); err != nil {
+		return op.cfg, err
+	}
+	old := op.cfg
+	op.cfg = cfg
+	op.SetPrompt(cfg.Prompt)
+	op.SetMaskRune(cfg.MaskRune)
+	op.buf.SetConfig(cfg)
+	width := op.cfg.FuncGetWidth()
+
+	if cfg.opHistory == nil {
+		op.SetHistoryPath(cfg.HistoryFile)
+		cfg.opHistory = op.history
+		cfg.opSearch = newOpSearch(op.buf.w, op.buf, op.history, cfg, width)
+	}
+	op.history = cfg.opHistory
+
+	// SetHistoryPath will close opHistory which already exists
+	// so if we use it next time, we need to reopen it by `InitHistory()`
+	op.history.Init()
+
+	if op.cfg.AutoComplete != nil {
+		op.opCompleter = newOpCompleter(op.buf.w, op, width)
+	}
+
+	op.opSearch = cfg.opSearch
+	return old, nil
+}
+
+func (o *Operation) ResetHistory() {
+	o.history.Reset()
+}
+
+// if err is not nil, it just mean it fail to write to file
+// other things goes fine.
+func (o *Operation) SaveHistory(content string) error {
+	return o.history.New([]rune(content))
+}
+
+func (o *Operation) Refresh() {
+	if o.t.IsReading() {
+		o.buf.Refresh(nil)
+	}
+}
+
+func (o *Operation) Clean() {
+	o.buf.Clean()
+}
+
+func FuncListener(f func(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool)) Listener {
+	return &DumpListener{f: f}
+}
+
+type DumpListener struct {
+	f func(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool)
+}
+
+func (d *DumpListener) OnChange(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool) {
+	return d.f(line, pos, key)
+}
+
+type Listener interface {
+	OnChange(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool)
+}

vendor/github.com/chzyer/readline/password.go

@@ -0,0 +1,32 @@
+package readline
+
+type opPassword struct {
+	o         *Operation
+	backupCfg *Config
+}
+
+func newOpPassword(o *Operation) *opPassword {
+	return &opPassword{o: o}
+}
+
+func (o *opPassword) ExitPasswordMode() {
+	o.o.SetConfig(o.backupCfg)
+	o.backupCfg = nil
+}
+
+func (o *opPassword) EnterPasswordMode(cfg *Config) (err error) {
+	o.backupCfg, err = o.o.SetConfig(cfg)
+	return
+}
+
+func (o *opPassword) PasswordConfig() *Config {
+	return &Config{
+		EnableMask:      true,
+		InterruptPrompt: "\n",
+		EOFPrompt:       "\n",
+		HistoryLimit:    -1,
+
+		Stdout: o.o.cfg.Stdout,
+		Stderr: o.o.cfg.Stderr,
+	}
+}

vendor/github.com/chzyer/readline/rawreader_windows.go

@@ -0,0 +1,125 @@
+// +build windows
+
+package readline
+
+import "unsafe"
+
+const (
+	VK_CANCEL   = 0x03
+	VK_BACK     = 0x08
+	VK_TAB      = 0x09
+	VK_RETURN   = 0x0D
+	VK_SHIFT    = 0x10
+	VK_CONTROL  = 0x11
+	VK_MENU     = 0x12
+	VK_ESCAPE   = 0x1B
+	VK_LEFT     = 0x25
+	VK_UP       = 0x26
+	VK_RIGHT    = 0x27
+	VK_DOWN     = 0x28
+	VK_DELETE   = 0x2E
+	VK_LSHIFT   = 0xA0
+	VK_RSHIFT   = 0xA1
+	VK_LCONTROL = 0xA2
+	VK_RCONTROL = 0xA3
+)
+
+// RawReader translate input record to ANSI escape sequence.
+// To provides same behavior as unix terminal.
+type RawReader struct {
+	ctrlKey bool
+	altKey  bool
+}
+
+func NewRawReader() *RawReader {
+	r := new(RawReader)
+	return r
+}
+
+// only process one action in one read
+func (r *RawReader) Read(buf []byte) (int, error) {
+	ir := new(_INPUT_RECORD)
+	var read int
+	var err error
+next:
+	err = kernel.ReadConsoleInputW(stdin,
+		uintptr(unsafe.Pointer(ir)),
+		1,
+		uintptr(unsafe.Pointer(&read)),
+	)
+	if err != nil {
+		return 0, err
+	}
+	if ir.EventType != EVENT_KEY {
+		goto next
+	}
+	ker := (*_KEY_EVENT_RECORD)(unsafe.Pointer(&ir.Event[0]))
+	if ker.bKeyDown == 0 { // keyup
+		if r.ctrlKey || r.altKey {
+			switch ker.wVirtualKeyCode {
+			case VK_RCONTROL, VK_LCONTROL:
+				r.ctrlKey = false
+			case VK_MENU: //alt
+				r.altKey = false
+			}
+		}
+		goto next
+	}
+
+	if ker.unicodeChar == 0 {
+		var target rune
+		switch ker.wVirtualKeyCode {
+		case VK_RCONTROL, VK_LCONTROL:
+			r.ctrlKey = true
+		case VK_MENU: //alt
+			r.altKey = true
+		case VK_LEFT:
+			target = CharBackward
+		case VK_RIGHT:
+			target = CharForward
+		case VK_UP:
+			target = CharPrev
+		case VK_DOWN:
+			target = CharNext
+		}
+		if target != 0 {
+			return r.write(buf, target)
+		}
+		goto next
+	}
+	char := rune(ker.unicodeChar)
+	if r.ctrlKey {
+		switch char {
+		case 'A':
+			char = CharLineStart
+		case 'E':
+			char = CharLineEnd
+		case 'R':
+			char = CharBckSearch
+		case 'S':
+			char = CharFwdSearch
+		}
+	} else if r.altKey {
+		switch char {
+		case VK_BACK:
+			char = CharBackspace
+		}
+		return r.writeEsc(buf, char)
+	}
+	return r.write(buf, char)
+}
+
+func (r *RawReader) writeEsc(b []byte, char rune) (int, error) {
+	b[0] = '\033'
+	n := copy(b[1:], []byte(string(char)))
+	return n + 1, nil
+}
+
+func (r *RawReader) write(b []byte, char rune) (int, error) {
+	n := copy(b, []byte(string(char)))
+	return n, nil
+}
+
+func (r *RawReader) Close() error {
+	return nil
+}

vendor/github.com/chzyer/readline/readline.go

@@ -0,0 +1,257 @@
+package readline
+
+import "io"
+
+type Instance struct {
+	Config    *Config
+	Terminal  *Terminal
+	Operation *Operation
+}
+
+type Config struct {
+	// prompt supports ANSI escape sequence, so we can color some characters even in windows
+	Prompt string
+
+	// readline will persist historys to file where HistoryFile specified
+	HistoryFile string
+	// specify the max length of historys, it's 500 by default, set it to -1 to disable history
+	HistoryLimit           int
+	DisableAutoSaveHistory bool
+
+	// AutoCompleter will called once user press TAB
+	AutoComplete AutoCompleter
+
+	// Any key press will pass to Listener
+	// NOTE: Listener will be triggered by (nil, 0, 0) immediately
+	Listener Listener
+
+	// If VimMode is true, readline will in vim.insert mode by default
+	VimMode bool
+
+	InterruptPrompt string
+	EOFPrompt       string
+
+	FuncGetWidth func() int
+
+	Stdin  io.Reader
+	Stdout io.Writer
+	Stderr io.Writer
+
+	EnableMask bool
+	MaskRune   rune
+
+	// erase the editing line after user submited it
+	// it use in IM usually.
+	UniqueEditLine bool
+
+	// force use interactive even stdout is not a tty
+	FuncIsTerminal      func() bool
+	FuncMakeRaw         func() error
+	FuncExitRaw         func() error
+	FuncOnWidthChanged  func(func())
+	ForceUseInteractive bool
+
+	// private fields
+	inited    bool
+	opHistory *opHistory
+	opSearch  *opSearch
+}
+
+func (c *Config) useInteractive() bool {
+	if c.ForceUseInteractive {
+		return true
+	}
+	return c.FuncIsTerminal()
+}
+
+func (c *Config) Init() error {
+	if c.inited {
+		return nil
+	}
+	c.inited = true
+	if c.Stdin == nil {
+		c.Stdin = Stdin
+	}
+	if c.Stdout == nil {
+		c.Stdout = Stdout
+	}
+	if c.Stderr == nil {
+		c.Stderr = Stderr
+	}
+	if c.HistoryLimit == 0 {
+		c.HistoryLimit = 500
+	}
+
+	if c.InterruptPrompt == "" {
+		c.InterruptPrompt = "^C"
+	} else if c.InterruptPrompt == "\n" {
+		c.InterruptPrompt = ""
+	}
+	if c.EOFPrompt == "" {
+		c.EOFPrompt = "^D"
+	} else if c.EOFPrompt == "\n" {
+		c.EOFPrompt = ""
+	}
+
+	if c.FuncGetWidth == nil {
+		c.FuncGetWidth = GetScreenWidth
+	}
+	if c.FuncIsTerminal == nil {
+		c.FuncIsTerminal = DefaultIsTerminal
+	}
+	rm := new(RawMode)
+	if c.FuncMakeRaw == nil {
+		c.FuncMakeRaw = rm.Enter
+	}
+	if c.FuncExitRaw == nil {
+		c.FuncExitRaw = rm.Exit
+	}
+	if c.FuncOnWidthChanged == nil {
+		c.FuncOnWidthChanged = DefaultOnWidthChanged
+	}
+
+	return nil
+}
+
+func (c Config) Clone() *Config {
+	c.opHistory = nil
+	c.opSearch = nil
+	return &c
+}
+
+func (c *Config) SetListener(f func(line []rune, pos int, key rune) (newLine []rune, newPos int, ok bool)) {
+	c.Listener = FuncListener(f)
+}
+
+func NewEx(cfg *Config) (*Instance, error) {
+	t, err := NewTerminal(cfg)
+	if err != nil {
+		return nil, err
+	}
+	rl := t.Readline()
+	return &Instance{
+		Config:    cfg,
+		Terminal:  t,
+		Operation: rl,
+	}, nil
+}
+
+func New(prompt string) (*Instance, error) {
+	return NewEx(&Config{Prompt: prompt})
+}
+
+func (i *Instance) ResetHistory() {
+	i.Operation.ResetHistory()
+}
+
+func (i *Instance) SetPrompt(s string) {
+	i.Operation.SetPrompt(s)
+}
+
+func (i *Instance) SetMaskRune(r rune) {
+	i.Operation.SetMaskRune(r)
+}
+
+// change history persistence in runtime
+func (i *Instance) SetHistoryPath(p string) {
+	i.Operation.SetHistoryPath(p)
+}
+
+// readline will refresh automatic when write through Stdout()
+func (i *Instance) Stdout() io.Writer {
+	return i.Operation.Stdout()
+}
+
+// readline will refresh automatic when write through Stdout()
+func (i *Instance) Stderr() io.Writer {
+	return i.Operation.Stderr()
+}
+
+// switch VimMode in runtime
+func (i *Instance) SetVimMode(on bool) {
+	i.Operation.SetVimMode(on)
+}
+
+func (i *Instance) IsVimMode() bool {
+	return i.Operation.IsEnableVimMode()
+}
+
+func (i *Instance) GenPasswordConfig() *Config {
+	return i.Operation.GenPasswordConfig()
+}
+
+// we can generate a config by `i.GenPasswordConfig()`
+func (i *Instance) ReadPasswordWithConfig(cfg *Config) ([]byte, error) {
+	return i.Operation.PasswordWithConfig(cfg)
+}
+
+func (i *Instance) ReadPasswordEx(prompt string, l Listener) ([]byte, error) {
+	return i.Operation.PasswordEx(prompt, l)
+}
+
+func (i *Instance) ReadPassword(prompt string) ([]byte, error) {
+	return i.Operation.Password(prompt)
+}
+
+type Result struct {
+	Line  string
+	Error error
+}
+
+func (l *Result) CanContinue() bool {
+	return len(l.Line) != 0 && l.Error == ErrInterrupt
+}
+
+func (l *Result) CanBreak() bool {
+	return !l.CanContinue() && l.Error != nil
+}
+
+func (i *Instance) Line() *Result {
+	ret, err := i.Readline()
+	return &Result{ret, err}
+}
+
+// err is one of (nil, io.EOF, readline.ErrInterrupt)
+func (i *Instance) Readline() (string, error) {
+	return i.Operation.String()
+}
+
+func (i *Instance) SaveHistory(content string) error {
+	return i.Operation.SaveHistory(content)
+}
+
+// same as readline
+func (i *Instance) ReadSlice() ([]byte, error) {
+	return i.Operation.Slice()
+}
+
+// we must make sure that call Close() before process exit.
+func (i *Instance) Close() error {
+	if err := i.Terminal.Close(); err != nil {
+		return err
+	}
+	i.Operation.Close()
+	return nil
+}
+func (i *Instance) Clean() {
+	i.Operation.Clean()
+}
+
+func (i *Instance) Write(b []byte) (int, error) {
+	return i.Stdout().Write(b)
+}
+
+func (i *Instance) SetConfig(cfg *Config) *Config {
+	if i.Config == cfg {
+		return cfg
+	}
+	old := i.Config
+	i.Config = cfg
+	i.Operation.SetConfig(cfg)
+	i.Terminal.SetConfig(cfg)
+	return old
+}
+
+func (i *Instance) Refresh() {
+	i.Operation.Refresh()
+}

vendor/github.com/chzyer/readline/remote.go

@@ -0,0 +1,474 @@
+package readline
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"net"
+	"os"
+	"sync"
+	"sync/atomic"
+)
+
+type MsgType int16
+
+const (
+	T_DATA = MsgType(iota)
+	T_WIDTH
+	T_WIDTH_REPORT
+	T_ISTTY_REPORT
+	T_RAW
+	T_ERAW // exit raw
+	T_EOF
+)
+
+type RemoteSvr struct {
+	eof           int32
+	closed        int32
+	width         int32
+	reciveChan    chan struct{}
+	writeChan     chan *writeCtx
+	conn          net.Conn
+	isTerminal    bool
+	funcWidthChan func()
+	stopChan      chan struct{}
+
+	dataBufM sync.Mutex
+	dataBuf  bytes.Buffer
+}
+
+type writeReply struct {
+	n   int
+	err error
+}
+
+type writeCtx struct {
+	msg   *Message
+	reply chan *writeReply
+}
+
+func newWriteCtx(msg *Message) *writeCtx {
+	return &writeCtx{
+		msg:   msg,
+		reply: make(chan *writeReply),
+	}
+}
+
+func NewRemoteSvr(conn net.Conn) (*RemoteSvr, error) {
+	rs := &RemoteSvr{
+		width:      -1,
+		conn:       conn,
+		writeChan:  make(chan *writeCtx),
+		reciveChan: make(chan struct{}),
+		stopChan:   make(chan struct{}),
+	}
+	buf := bufio.NewReader(rs.conn)
+
+	if err := rs.init(buf); err != nil {
+		return nil, err
+	}
+
+	go rs.readLoop(buf)
+	go rs.writeLoop()
+	return rs, nil
+}
+
+func (r *RemoteSvr) init(buf *bufio.Reader) error {
+	m, err := ReadMessage(buf)
+	if err != nil {
+		return err
+	}
+	// receive isTerminal
+	if m.Type != T_ISTTY_REPORT {
+		return fmt.Errorf("unexpected init message")
+	}
+	r.GotIsTerminal(m.Data)
+
+	// receive width
+	m, err = ReadMessage(buf)
+	if err != nil {
+		return err
+	}
+	if m.Type != T_WIDTH_REPORT {
+		return fmt.Errorf("unexpected init message")
+	}
+	r.GotReportWidth(m.Data)
+
+	return nil
+}
+
+func (r *RemoteSvr) HandleConfig(cfg *Config) {
+	cfg.Stderr = r
+	cfg.Stdout = r
+	cfg.Stdin = r
+	cfg.FuncExitRaw = r.ExitRawMode
+	cfg.FuncIsTerminal = r.IsTerminal
+	cfg.FuncMakeRaw = r.EnterRawMode
+	cfg.FuncExitRaw = r.ExitRawMode
+	cfg.FuncGetWidth = r.GetWidth
+	cfg.FuncOnWidthChanged = func(f func()) {
+		r.funcWidthChan = f
+	}
+}
+
+func (r *RemoteSvr) IsTerminal() bool {
+	return r.isTerminal
+}
+
+func (r *RemoteSvr) checkEOF() error {
+	if atomic.LoadInt32(&r.eof) == 1 {
+		return io.EOF
+	}
+	return nil
+}
+
+func (r *RemoteSvr) Read(b []byte) (int, error) {
+	r.dataBufM.Lock()
+	n, err := r.dataBuf.Read(b)
+	r.dataBufM.Unlock()
+	if n == 0 {
+		if err := r.checkEOF(); err != nil {
+			return 0, err
+		}
+	}
+
+	if n == 0 && err == io.EOF {
+		<-r.reciveChan
+		r.dataBufM.Lock()
+		n, err = r.dataBuf.Read(b)
+		r.dataBufM.Unlock()
+	}
+	if n == 0 {
+		if err := r.checkEOF(); err != nil {
+			return 0, err
+		}
+	}
+
+	return n, err
+}
+
+func (r *RemoteSvr) writeMsg(m *Message) error {
+	ctx := newWriteCtx(m)
+	r.writeChan <- ctx
+	reply := <-ctx.reply
+	return reply.err
+}
+
+func (r *RemoteSvr) Write(b []byte) (int, error) {
+	ctx := newWriteCtx(NewMessage(T_DATA, b))
+	r.writeChan <- ctx
+	reply := <-ctx.reply
+	return reply.n, reply.err
+}
+
+func (r *RemoteSvr) EnterRawMode() error {
+	return r.writeMsg(NewMessage(T_RAW, nil))
+}
+
+func (r *RemoteSvr) ExitRawMode() error {
+	return r.writeMsg(NewMessage(T_ERAW, nil))
+}
+
+func (r *RemoteSvr) writeLoop() {
+	defer r.Close()
+
+loop:
+	for {
+		select {
+		case ctx, ok := <-r.writeChan:
+			if !ok {
+				break
+			}
+			n, err := ctx.msg.WriteTo(r.conn)
+			ctx.reply <- &writeReply{n, err}
+		case <-r.stopChan:
+			break loop
+		}
+	}
+}
+
+func (r *RemoteSvr) Close() {
+	if atomic.CompareAndSwapInt32(&r.closed, 0, 1) {
+		close(r.stopChan)
+		r.conn.Close()
+	}
+}
+
+func (r *RemoteSvr) readLoop(buf *bufio.Reader) {
+	defer r.Close()
+	for {
+		m, err := ReadMessage(buf)
+		if err != nil {
+			break
+		}
+		switch m.Type {
+		case T_EOF:
+			atomic.StoreInt32(&r.eof, 1)
+			select {
+			case r.reciveChan <- struct{}{}:
+			default:
+			}
+		case T_DATA:
+			r.dataBufM.Lock()
+			r.dataBuf.Write(m.Data)
+			r.dataBufM.Unlock()
+			select {
+			case r.reciveChan <- struct{}{}:
+			default:
+			}
+		case T_WIDTH_REPORT:
+			r.GotReportWidth(m.Data)
+		case T_ISTTY_REPORT:
+			r.GotIsTerminal(m.Data)
+		}
+	}
+}
+
+func (r *RemoteSvr) GotIsTerminal(data []byte) {
+	if binary.BigEndian.Uint16(data) == 0 {
+		r.isTerminal = false
+	} else {
+		r.isTerminal = true
+	}
+}
+
+func (r *RemoteSvr) GotReportWidth(data []byte) {
+	atomic.StoreInt32(&r.width, int32(binary.BigEndian.Uint16(data)))
+	if r.funcWidthChan != nil {
+		r.funcWidthChan()
+	}
+}
+
+func (r *RemoteSvr) GetWidth() int {
+	return int(atomic.LoadInt32(&r.width))
+}
+
+// -----------------------------------------------------------------------------
+
+type Message struct {
+	Type MsgType
+	Data []byte
+}
+
+func ReadMessage(r io.Reader) (*Message, error) {
+	m := new(Message)
+	var length int32
+	if err := binary.Read(r, binary.BigEndian, &length); err != nil {
+		return nil, err
+	}
+	if err := binary.Read(r, binary.BigEndian, &m.Type); err != nil {
+		return nil, err
+	}
+	m.Data = make([]byte, int(length)-2)
+	if _, err := io.ReadFull(r, m.Data); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func NewMessage(t MsgType, data []byte) *Message {
+	return &Message{t, data}
+}
+
+func (m *Message) WriteTo(w io.Writer) (int, error) {
+	buf := bytes.NewBuffer(make([]byte, 0, len(m.Data)+2+4))
+	binary.Write(buf, binary.BigEndian, int32(len(m.Data)+2))
+	binary.Write(buf, binary.BigEndian, m.Type)
+	buf.Write(m.Data)
+	n, err := buf.WriteTo(w)
+	return int(n), err
+}
+
+// -----------------------------------------------------------------------------
+
+type RemoteCli struct {
+	conn        net.Conn
+	raw         RawMode
+	receiveChan chan struct{}
+	inited      int32
+	isTerminal  *bool
+
+	data  bytes.Buffer
+	dataM sync.Mutex
+}
+
+func NewRemoteCli(conn net.Conn) (*RemoteCli, error) {
+	r := &RemoteCli{
+		conn:        conn,
+		receiveChan: make(chan struct{}),
+	}
+	return r, nil
+}
+
+func (r *RemoteCli) MarkIsTerminal(is bool) {
+	r.isTerminal = &is
+}
+
+func (r *RemoteCli) init() error {
+	if !atomic.CompareAndSwapInt32(&r.inited, 0, 1) {
+		return nil
+	}
+
+	if err := r.reportIsTerminal(); err != nil {
+		return err
+	}
+
+	if err := r.reportWidth(); err != nil {
+		return err
+	}
+
+	// register sig for width changed
+	DefaultOnWidthChanged(func() {
+		r.reportWidth()
+	})
+	return nil
+}
+
+func (r *RemoteCli) writeMsg(m *Message) error {
+	r.dataM.Lock()
+	_, err := m.WriteTo(r.conn)
+	r.dataM.Unlock()
+	return err
+}
+
+func (r *RemoteCli) Write(b []byte) (int, error) {
+	m := NewMessage(T_DATA, b)
+	r.dataM.Lock()
+	_, err := m.WriteTo(r.conn)
+	r.dataM.Unlock()
+	return len(b), err
+}
+
+func (r *RemoteCli) reportWidth() error {
+	screenWidth := GetScreenWidth()
+	data := make([]byte, 2)
+	binary.BigEndian.PutUint16(data, uint16(screenWidth))
+	msg := NewMessage(T_WIDTH_REPORT, data)
+
+	if err := r.writeMsg(msg); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (r *RemoteCli) reportIsTerminal() error {
+	var isTerminal bool
+	if r.isTerminal != nil {
+		isTerminal = *r.isTerminal
+	} else {
+		isTerminal = DefaultIsTerminal()
+	}
+	data := make([]byte, 2)
+	if isTerminal {
+		binary.BigEndian.PutUint16(data, 1)
+	} else {
+		binary.BigEndian.PutUint16(data, 0)
+	}
+	msg := NewMessage(T_ISTTY_REPORT, data)
+	if err := r.writeMsg(msg); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (r *RemoteCli) readLoop() {
+	buf := bufio.NewReader(r.conn)
+	for {
+		msg, err := ReadMessage(buf)
+		if err != nil {
+			break
+		}
+		switch msg.Type {
+		case T_ERAW:
+			r.raw.Exit()
+		case T_RAW:
+			r.raw.Enter()
+		case T_DATA:
+			os.Stdout.Write(msg.Data)
+		}
+	}
+}
+
+func (r *RemoteCli) ServeBy(source io.Reader) error {
+	if err := r.init(); err != nil {
+		return err
+	}
+
+	go func() {
+		defer r.Close()
+		for {
+			n, _ := io.Copy(r, source)
+			if n == 0 {
+				break
+			}
+		}
+	}()
+	defer r.raw.Exit()
+	r.readLoop()
+	return nil
+}
+
+func (r *RemoteCli) Close() {
+	r.writeMsg(NewMessage(T_EOF, nil))
+}
+
+func (r *RemoteCli) Serve() error {
+	return r.ServeBy(os.Stdin)
+}
+
+func ListenRemote(n, addr string, cfg *Config, h func(*Instance), onListen ...func(net.Listener) error) error {
+	ln, err := net.Listen(n, addr)
+	if err != nil {
+		return err
+	}
+	if len(onListen) > 0 {
+		if err := onListen[0](ln); err != nil {
+			return err
+		}
+	}
+	for {
+		conn, err := ln.Accept()
+		if err != nil {
+			break
+		}
+		go func() {
+			defer conn.Close()
+			rl, err := HandleConn(*cfg, conn)
+			if err != nil {
+				return
+			}
+			h(rl)
+		}()
+	}
+	return nil
+}
+
+func HandleConn(cfg Config, conn net.Conn) (*Instance, error) {
+	r, err := NewRemoteSvr(conn)
+	if err != nil {
+		return nil, err
+	}
+	r.HandleConfig(&cfg)
+
+	rl, err := NewEx(&cfg)
+	if err != nil {
+		return nil, err
+	}
+	return rl, nil
+}
+
+func DialRemote(n, addr string) error {
+	conn, err := net.Dial(n, addr)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	cli, err := NewRemoteCli(conn)
+	if err != nil {
+		return err
+	}
+	return cli.Serve()
+}

vendor/github.com/chzyer/readline/runebuf.go

@@ -0,0 +1,500 @@
+package readline
+
+import (
+	"bufio"
+	"bytes"
+	"io"
+	"strings"
+)
+
+type runeBufferBck struct {
+	buf []rune
+	idx int
+}
+
+type RuneBuffer struct {
+	buf    []rune
+	idx    int
+	prompt []rune
+	w      io.Writer
+
+	hadClean    bool
+	interactive bool
+	cfg         *Config
+
+	width int
+
+	bck *runeBufferBck
+}
+
+func (r *RuneBuffer) OnWidthChange(newWidth int) {
+	r.width = newWidth
+}
+
+func (r *RuneBuffer) Backup() {
+	r.bck = &runeBufferBck{r.buf, r.idx}
+}
+
+func (r *RuneBuffer) Restore() {
+	r.Refresh(func() {
+		if r.bck == nil {
+			return
+		}
+		r.buf = r.bck.buf
+		r.idx = r.bck.idx
+	})
+}
+
+func NewRuneBuffer(w io.Writer, prompt string, cfg *Config, width int) *RuneBuffer {
+	rb := &RuneBuffer{
+		w:           w,
+		interactive: cfg.useInteractive(),
+		cfg:         cfg,
+		width:       width,
+	}
+	rb.SetPrompt(prompt)
+	return rb
+}
+
+func (r *RuneBuffer) SetConfig(cfg *Config) {
+	r.cfg = cfg
+	r.interactive = cfg.useInteractive()
+}
+
+func (r *RuneBuffer) SetMask(m rune) {
+	r.cfg.MaskRune = m
+}
+
+func (r *RuneBuffer) CurrentWidth(x int) int {
+	return runes.WidthAll(r.buf[:x])
+}
+
+func (r *RuneBuffer) PromptLen() int {
+	return runes.WidthAll(runes.ColorFilter(r.prompt))
+}
+
+func (r *RuneBuffer) RuneSlice(i int) []rune {
+	if i > 0 {
+		rs := make([]rune, i)
+		copy(rs, r.buf[r.idx:r.idx+i])
+		return rs
+	}
+	rs := make([]rune, -i)
+	copy(rs, r.buf[r.idx+i:r.idx])
+	return rs
+}
+
+func (r *RuneBuffer) Runes() []rune {
+	newr := make([]rune, len(r.buf))
+	copy(newr, r.buf)
+	return newr
+}
+
+func (r *RuneBuffer) Pos() int {
+	return r.idx
+}
+
+func (r *RuneBuffer) Len() int {
+	return len(r.buf)
+}
+
+func (r *RuneBuffer) MoveToLineStart() {
+	r.Refresh(func() {
+		if r.idx == 0 {
+			return
+		}
+		r.idx = 0
+	})
+}
+
+func (r *RuneBuffer) MoveBackward() {
+	r.Refresh(func() {
+		if r.idx == 0 {
+			return
+		}
+		r.idx--
+	})
+}
+
+func (r *RuneBuffer) WriteString(s string) {
+	r.WriteRunes([]rune(s))
+}
+
+func (r *RuneBuffer) WriteRune(s rune) {
+	r.WriteRunes([]rune{s})
+}
+
+func (r *RuneBuffer) WriteRunes(s []rune) {
+	r.Refresh(func() {
+		tail := append(s, r.buf[r.idx:]...)
+		r.buf = append(r.buf[:r.idx], tail...)
+		r.idx += len(s)
+	})
+}
+
+func (r *RuneBuffer) MoveForward() {
+	r.Refresh(func() {
+		if r.idx == len(r.buf) {
+			return
+		}
+		r.idx++
+	})
+}
+
+func (r *RuneBuffer) IsCursorInEnd() bool {
+	return r.idx == len(r.buf)
+}
+
+func (r *RuneBuffer) Replace(ch rune) {
+	r.Refresh(func() {
+		r.buf[r.idx] = ch
+	})
+}
+
+func (r *RuneBuffer) Erase() {
+	r.Refresh(func() {
+		r.idx = 0
+		r.buf = r.buf[:0]
+	})
+}
+
+func (r *RuneBuffer) Delete() (success bool) {
+	r.Refresh(func() {
+		if r.idx == len(r.buf) {
+			return
+		}
+		r.buf = append(r.buf[:r.idx], r.buf[r.idx+1:]...)
+		success = true
+	})
+	return
+}
+
+func (r *RuneBuffer) DeleteWord() {
+	if r.idx == len(r.buf) {
+		return
+	}
+	init := r.idx
+	for init < len(r.buf) && IsWordBreak(r.buf[init]) {
+		init++
+	}
+	for i := init + 1; i < len(r.buf); i++ {
+		if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
+			r.Refresh(func() {
+				r.buf = append(r.buf[:r.idx], r.buf[i-1:]...)
+			})
+			return
+		}
+	}
+	r.Kill()
+}
+
+func (r *RuneBuffer) MoveToPrevWord() (success bool) {
+	r.Refresh(func() {
+		if r.idx == 0 {
+			return
+		}
+
+		for i := r.idx - 1; i > 0; i-- {
+			if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
+				r.idx = i
+				success = true
+				return
+			}
+		}
+		r.idx = 0
+		success = true
+	})
+	return
+}
+
+func (r *RuneBuffer) KillFront() {
+	r.Refresh(func() {
+		if r.idx == 0 {
+			return
+		}
+
+		length := len(r.buf) - r.idx
+		copy(r.buf[:length], r.buf[r.idx:])
+		r.idx = 0
+		r.buf = r.buf[:length]
+	})
+}
+
+func (r *RuneBuffer) Kill() {
+	r.Refresh(func() {
+		r.buf = r.buf[:r.idx]
+	})
+}
+
+func (r *RuneBuffer) Transpose() {
+	r.Refresh(func() {
+		if len(r.buf) == 1 {
+			r.idx++
+		}
+
+		if len(r.buf) < 2 {
+			return
+		}
+
+		if r.idx == 0 {
+			r.idx = 1
+		} else if r.idx >= len(r.buf) {
+			r.idx = len(r.buf) - 1
+		}
+		r.buf[r.idx], r.buf[r.idx-1] = r.buf[r.idx-1], r.buf[r.idx]
+		r.idx++
+	})
+}
+
+func (r *RuneBuffer) MoveToNextWord() {
+	r.Refresh(func() {
+		for i := r.idx + 1; i < len(r.buf); i++ {
+			if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
+				r.idx = i
+				return
+			}
+		}
+
+		r.idx = len(r.buf)
+	})
+}
+
+func (r *RuneBuffer) MoveToEndWord() {
+	r.Refresh(func() {
+		// already at the end, so do nothing
+		if r.idx == len(r.buf) {
+			return
+		}
+		// if we are at the end of a word already, go to next
+		if !IsWordBreak(r.buf[r.idx]) && IsWordBreak(r.buf[r.idx+1]) {
+			r.idx++
+		}
+
+		// keep going until at the end of a word
+		for i := r.idx + 1; i < len(r.buf); i++ {
+			if IsWordBreak(r.buf[i]) && !IsWordBreak(r.buf[i-1]) {
+				r.idx = i - 1
+				return
+			}
+		}
+		r.idx = len(r.buf)
+	})
+}
+
+func (r *RuneBuffer) BackEscapeWord() {
+	r.Refresh(func() {
+		if r.idx == 0 {
+			return
+		}
+		for i := r.idx - 1; i > 0; i-- {
+			if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
+				r.buf = append(r.buf[:i], r.buf[r.idx:]...)
+				r.idx = i
+				return
+			}
+		}
+
+		r.buf = r.buf[:0]
+		r.idx = 0
+	})
+}
+
+func (r *RuneBuffer) Backspace() {
+	r.Refresh(func() {
+		if r.idx == 0 {
+			return
+		}
+
+		r.idx--
+		r.buf = append(r.buf[:r.idx], r.buf[r.idx+1:]...)
+	})
+}
+
+func (r *RuneBuffer) MoveToLineEnd() {
+	r.Refresh(func() {
+		if r.idx == len(r.buf) {
+			return
+		}
+
+		r.idx = len(r.buf)
+	})
+}
+
+func (r *RuneBuffer) LineCount(width int) int {
+	if width == -1 {
+		width = r.width
+	}
+	return LineCount(width,
+		runes.WidthAll(r.buf)+r.PromptLen())
+}
+
+func (r *RuneBuffer) MoveTo(ch rune, prevChar, reverse bool) (success bool) {
+	r.Refresh(func() {
+		if reverse {
+			for i := r.idx - 1; i >= 0; i-- {
+				if r.buf[i] == ch {
+					r.idx = i
+					if prevChar {
+						r.idx++
+					}
+					success = true
+					return
+				}
+			}
+			return
+		}
+		for i := r.idx + 1; i < len(r.buf); i++ {
+			if r.buf[i] == ch {
+				r.idx = i
+				if prevChar {
+					r.idx--
+				}
+				success = true
+				return
+			}
+		}
+	})
+	return
+}
+
+func (r *RuneBuffer) isInLineEdge() bool {
+	if isWindows {
+		return false
+	}
+	sp := r.getSplitByLine(r.buf)
+	return len(sp[len(sp)-1]) == 0
+}
+
+func (r *RuneBuffer) getSplitByLine(rs []rune) []string {
+	return SplitByLine(r.PromptLen(), r.width, rs)
+}
+
+func (r *RuneBuffer) IdxLine(width int) int {
+	sp := r.getSplitByLine(r.buf[:r.idx])
+	return len(sp) - 1
+}
+
+func (r *RuneBuffer) CursorLineCount() int {
+	return r.LineCount(r.width) - r.IdxLine(r.width)
+}
+
+func (r *RuneBuffer) Refresh(f func()) {
+	if !r.interactive {
+		if f != nil {
+			f()
+		}
+		return
+	}
+	r.Clean()
+	if f != nil {
+		f()
+	}
+	r.print()
+}
+
+func (r *RuneBuffer) print() {
+	r.w.Write(r.output())
+	r.hadClean = false
+}
+
+func (r *RuneBuffer) output() []byte {
+	buf := bytes.NewBuffer(nil)
+	buf.WriteString(string(r.prompt))
+	if r.cfg.EnableMask && len(r.buf) > 0 {
+		buf.Write([]byte(strings.Repeat(string(r.cfg.MaskRune), len(r.buf)-1)))
+		if r.buf[len(r.buf)-1] == '\n' {
+			buf.Write([]byte{'\n'})
+		} else {
+			buf.Write([]byte(string(r.cfg.MaskRune)))
+		}
+		if len(r.buf) > r.idx {
+			buf.Write(runes.Backspace(r.buf[r.idx:]))
+		}
+
+	} else {
+		buf.Write([]byte(string(r.buf)))
+		if r.isInLineEdge() {
+			buf.Write([]byte(" \b"))
+		}
+	}
+
+	if len(r.buf) > r.idx {
+		buf.Write(runes.Backspace(r.buf[r.idx:]))
+	}
+	return buf.Bytes()
+}
+
+func (r *RuneBuffer) Reset() []rune {
+	ret := runes.Copy(r.buf)
+	r.buf = r.buf[:0]
+	r.idx = 0
+	return ret
+}
+
+func (r *RuneBuffer) calWidth(m int) int {
+	if m > 0 {
+		return runes.WidthAll(r.buf[r.idx : r.idx+m])
+	}
+	return runes.WidthAll(r.buf[r.idx+m : r.idx])
+}
+
+func (r *RuneBuffer) SetStyle(start, end int, style string) {
+	if end < start {
+		panic("end < start")
+	}
+
+	// goto start
+	move := start - r.idx
+	if move > 0 {
+		r.w.Write([]byte(string(r.buf[r.idx : r.idx+move])))
+	} else {
+		r.w.Write(bytes.Repeat([]byte("\b"), r.calWidth(move)))
+	}
+	r.w.Write([]byte("\033[" + style + "m"))
+	r.w.Write([]byte(string(r.buf[start:end])))
+	r.w.Write([]byte("\033[0m"))
+	// TODO: move back
+}
+
+func (r *RuneBuffer) SetWithIdx(idx int, buf []rune) {
+	r.Refresh(func() {
+		r.buf = buf
+		r.idx = idx
+	})
+}
+
+func (r *RuneBuffer) Set(buf []rune) {
+	r.SetWithIdx(len(buf), buf)
+}
+
+func (r *RuneBuffer) SetPrompt(prompt string) {
+	r.prompt = []rune(prompt)
+}
+
+func (r *RuneBuffer) cleanOutput(w io.Writer, idxLine int) {
+	buf := bufio.NewWriter(w)
+	buf.Write([]byte("\033[J")) // just like ^k :)
+
+	if idxLine == 0 {
+		io.WriteString(buf, "\033[2K\r")
+	} else {
+		for i := 0; i < idxLine; i++ {
+			io.WriteString(buf, "\033[2K\r\033[A")
+		}
+		io.WriteString(buf, "\033[2K\r")
+	}
+	buf.Flush()
+	return
+}
+
+func (r *RuneBuffer) Clean() {
+	r.clean(r.IdxLine(r.width))
+}
+
+func (r *RuneBuffer) clean(idxLine int) {
+	if r.hadClean || !r.interactive {
+		return
+	}
+	r.hadClean = true
+	r.cleanOutput(r.w, idxLine)
+}

vendor/github.com/chzyer/readline/runes.go

@@ -0,0 +1,167 @@
+package readline
+
+import (
+	"bytes"
+	"unicode"
+)
+
+var runes = Runes{}
+
+type Runes struct{}
+
+func (Runes) Equal(a, b []rune) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i := 0; i < len(a); i++ {
+		if a[i] != b[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// Search in runes from end to front
+func (Runes) IndexAllBck(r, sub []rune) int {
+	for i := len(r) - len(sub); i >= 0; i-- {
+		found := true
+		for j := 0; j < len(sub); j++ {
+			if r[i+j] != sub[j] {
+				found = false
+				break
+			}
+		}
+		if found {
+			return i
+		}
+	}
+	return -1
+}
+
+// Search in runes from front to end
+func (Runes) IndexAll(r, sub []rune) int {
+	for i := 0; i < len(r); i++ {
+		found := true
+		if len(r[i:]) < len(sub) {
+			return -1
+		}
+		for j := 0; j < len(sub); j++ {
+			if r[i+j] != sub[j] {
+				found = false
+				break
+			}
+		}
+		if found {
+			return i
+		}
+	}
+	return -1
+}
+
+func (Runes) Index(r rune, rs []rune) int {
+	for i := 0; i < len(rs); i++ {
+		if rs[i] == r {
+			return i
+		}
+	}
+	return -1
+}
+
+func (Runes) ColorFilter(r []rune) []rune {
+	newr := make([]rune, 0, len(r))
+	for pos := 0; pos < len(r); pos++ {
+		if r[pos] == '\033' && r[pos+1] == '[' {
+			idx := runes.Index('m', r[pos+2:])
+			if idx == -1 {
+				continue
+			}
+			pos += idx + 2
+			continue
+		}
+		newr = append(newr, r[pos])
+	}
+	return newr
+}
+
+var zeroWidth = []*unicode.RangeTable{
+	unicode.Mn,
+	unicode.Me,
+	unicode.Cc,
+	unicode.Cf,
+}
+
+var doubleWidth = []*unicode.RangeTable{
+	unicode.Han,
+	unicode.Hangul,
+	unicode.Hiragana,
+	unicode.Katakana,
+}
+
+func (Runes) Width(r rune) int {
+	if unicode.IsOneOf(zeroWidth, r) {
+		return 0
+	}
+	if unicode.IsOneOf(doubleWidth, r) {
+		return 2
+	}
+	return 1
+}
+
+func (Runes) WidthAll(r []rune) (length int) {
+	for i := 0; i < len(r); i++ {
+		length += runes.Width(r[i])
+	}
+	return
+}
+
+func (Runes) Backspace(r []rune) []byte {
+	return bytes.Repeat([]byte{'\b'}, runes.WidthAll(r))
+}
+
+func (Runes) Copy(r []rune) []rune {
+	n := make([]rune, len(r))
+	copy(n, r)
+	return n
+}
+
+func (Runes) HasPrefix(r, prefix []rune) bool {
+	if len(r) < len(prefix) {
+		return false
+	}
+	return runes.Equal(r[:len(prefix)], prefix)
+}
+
+func (Runes) Aggregate(candicate [][]rune) (same []rune, size int) {
+	for i := 0; i < len(candicate[0]); i++ {
+		for j := 0; j < len(candicate)-1; j++ {
+			if i >= len(candicate[j]) || i >= len(candicate[j+1]) {
+				goto aggregate
+			}
+			if candicate[j][i] != candicate[j+1][i] {
+				goto aggregate
+			}
+		}
+		size = i + 1
+	}
+aggregate:
+	if size > 0 {
+		same = runes.Copy(candicate[0][:size])
+		for i := 0; i < len(candicate); i++ {
+			n := runes.Copy(candicate[i])
+			copy(n, n[size:])
+			candicate[i] = n[:len(n)-size]
+		}
+	}
+	return
+}
+
+func (Runes) TrimSpaceLeft(in []rune) []rune {
+	firstIndex := len(in)
+	for i, r := range in {
+		if unicode.IsSpace(r) == false {
+			firstIndex = i
+			break
+		}
+	}
+	return in[firstIndex:]
+}

vendor/github.com/chzyer/readline/search.go

@@ -0,0 +1,160 @@
+package readline
+
+import (
+	"bytes"
+	"container/list"
+	"fmt"
+	"io"
+)
+
+const (
+	S_STATE_FOUND = iota
+	S_STATE_FAILING
+)
+
+const (
+	S_DIR_BCK = iota
+	S_DIR_FWD
+)
+
+type opSearch struct {
+	inMode    bool
+	state     int
+	dir       int
+	source    *list.Element
+	w         io.Writer
+	buf       *RuneBuffer
+	data      []rune
+	history   *opHistory
+	cfg       *Config
+	markStart int
+	markEnd   int
+	width     int
+}
+
+func newOpSearch(w io.Writer, buf *RuneBuffer, history *opHistory, cfg *Config, width int) *opSearch {
+	return &opSearch{
+		w:       w,
+		buf:     buf,
+		cfg:     cfg,
+		history: history,
+		width:   width,
+	}
+}
+
+func (o *opSearch) OnWidthChange(newWidth int) {
+	o.width = newWidth
+}
+
+func (o *opSearch) IsSearchMode() bool {
+	return o.inMode
+}
+
+func (o *opSearch) SearchBackspace() {
+	if len(o.data) > 0 {
+		o.data = o.data[:len(o.data)-1]
+		o.search(true)
+	}
+}
+
+func (o *opSearch) findHistoryBy(isNewSearch bool) (int, *list.Element) {
+	if o.dir == S_DIR_BCK {
+		return o.history.FindBck(isNewSearch, o.data, o.buf.idx)
+	}
+	return o.history.FindFwd(isNewSearch, o.data, o.buf.idx)
+}
+
+func (o *opSearch) search(isChange bool) bool {
+	if len(o.data) == 0 {
+		o.state = S_STATE_FOUND
+		o.SearchRefresh(-1)
+		return true
+	}
+	idx, elem := o.findHistoryBy(isChange)
+	if elem == nil {
+		o.SearchRefresh(-2)
+		return false
+	}
+	o.history.current = elem
+
+	item := o.history.showItem(o.history.current.Value)
+	start, end := 0, 0
+	if o.dir == S_DIR_BCK {
+		start, end = idx, idx+len(o.data)
+	} else {
+		start, end = idx, idx+len(o.data)
+		idx += len(o.data)
+	}
+	o.buf.SetWithIdx(idx, item)
+	o.markStart, o.markEnd = start, end
+	o.SearchRefresh(idx)
+	return true
+}
+
+func (o *opSearch) SearchChar(r rune) {
+	o.data = append(o.data, r)
+	o.search(true)
+}
+
+func (o *opSearch) SearchMode(dir int) {
+	alreadyInMode := o.inMode
+	o.inMode = true
+	o.dir = dir
+	o.source = o.history.current
+	if alreadyInMode {
+		o.search(false)
+	} else {
+		o.SearchRefresh(-1)
+	}
+}
+
+func (o *opSearch) ExitSearchMode(revert bool) {
+	if revert {
+		o.history.current = o.source
+		o.buf.Set(o.history.showItem(o.history.current.Value))
+	}
+	o.markStart, o.markEnd = 0, 0
+	o.state = S_STATE_FOUND
+	o.inMode = false
+	o.source = nil
+	o.data = nil
+}
+
+func (o *opSearch) SearchRefresh(x int) {
+	if x == -2 {
+		o.state = S_STATE_FAILING
+	} else if x >= 0 {
+		o.state = S_STATE_FOUND
+	}
+	if x < 0 {
+		x = o.buf.idx
+	}
+	x = o.buf.CurrentWidth(x)
+	x += o.buf.PromptLen()
+	x = x % o.width
+
+	if o.markStart > 0 {
+		o.buf.SetStyle(o.markStart, o.markEnd, "4")
+	}
+
+	lineCnt := o.buf.CursorLineCount()
+	buf := bytes.NewBuffer(nil)
+	buf.Write(bytes.Repeat([]byte("\n"), lineCnt))
+	buf.WriteString("\033[J")
+	if o.state == S_STATE_FAILING {
+		buf.WriteString("failing ")
+	}
+	if o.dir == S_DIR_BCK {
+		buf.WriteString("bck")
+	} else if o.dir == S_DIR_FWD {
+		buf.WriteString("fwd")
+	}
+	buf.WriteString("-i-search: ")
+	buf.WriteString(string(o.data))         // keyword
+	buf.WriteString("\033[4m \033[0m")      // _
+	fmt.Fprintf(buf, "\r\033[%dA", lineCnt) // move prev
+	if x > 0 {
+		fmt.Fprintf(buf, "\033[%dC", x) // move forward
+	}
+	o.w.Write(buf.Bytes())
+}

vendor/github.com/chzyer/readline/std.go

@@ -0,0 +1,66 @@
+package readline
+
+import (
+	"io"
+	"os"
+	"sync"
+)
+
+var (
+	Stdin  io.ReadCloser  = os.Stdin
+	Stdout io.WriteCloser = os.Stdout
+	Stderr io.WriteCloser = os.Stderr
+)
+
+var (
+	std     *Instance
+	stdOnce sync.Once
+)
+
+// global instance will not submit history automatic
+func getInstance() *Instance {
+	stdOnce.Do(func() {
+		std, _ = NewEx(&Config{
+			DisableAutoSaveHistory: true,
+		})
+	})
+	return std
+}
+
+// let readline load history from filepath
+// and try to persist history into disk
+// set fp to "" to prevent readline persisting history to disk
+// so the `AddHistory` will return nil error forever.
+func SetHistoryPath(fp string) {
+	ins := getInstance()
+	cfg := ins.Config.Clone()
+	cfg.HistoryFile = fp
+	ins.SetConfig(cfg)
+}
+
+// set auto completer to global instance
+func SetAutoComplete(completer AutoCompleter) {
+	ins := getInstance()
+	cfg := ins.Config.Clone()
+	cfg.AutoComplete = completer
+	ins.SetConfig(cfg)
+}
+
+// add history to global instance manually
+// raise error only if `SetHistoryPath` is set with a non-empty path
+func AddHistory(content string) error {
+	ins := getInstance()
+	return ins.SaveHistory(content)
+}
+
+func Password(prompt string) ([]byte, error) {
+	ins := getInstance()
+	return ins.ReadPassword(prompt)
+}
+
+// readline with global configs
+func Line(prompt string) (string, error) {
+	ins := getInstance()
+	ins.SetPrompt(prompt)
+	return ins.Readline()
+}

vendor/github.com/chzyer/readline/std_windows.go

@@ -0,0 +1,9 @@
+// +build windows
+
+package readline
+
+func init() {
+	Stdin = NewRawReader()
+	Stdout = NewANSIWriter(Stdout)
+	Stderr = NewANSIWriter(Stderr)
+}

vendor/github.com/chzyer/readline/term.go

@@ -0,0 +1,134 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd
+
+// Package terminal provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := terminal.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer terminal.Restore(0, oldState)
+package readline
+
+import (
+	"io"
+	"syscall"
+	"unsafe"
+)
+
+// State contains the state of a terminal.
+type State struct {
+	termios syscall.Termios
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	var termios syscall.Termios
+	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
+	return err == 0
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	var oldState State
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	newState := oldState.termios
+	// This attempts to replicate the behaviour documented for cfmakeraw in
+	// the termios(3) manpage.
+	newState.Iflag &^= syscall.IGNBRK | syscall.BRKINT | syscall.PARMRK | syscall.ISTRIP | syscall.INLCR | syscall.IGNCR | syscall.ICRNL | syscall.IXON
+	// newState.Oflag &^= syscall.OPOST
+	newState.Lflag &^= syscall.ECHO | syscall.ECHONL | syscall.ICANON | syscall.ISIG | syscall.IEXTEN
+	newState.Cflag &^= syscall.CSIZE | syscall.PARENB
+	newState.Cflag |= syscall.CS8
+
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	return &oldState, nil
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	var oldState State
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	return &oldState, nil
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func restoreTerm(fd int, state *State) error {
+	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&state.termios)), 0, 0, 0)
+	return err
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	var dimensions [4]uint16
+
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0); err != 0 {
+		return -1, -1, err
+	}
+	return int(dimensions[1]), int(dimensions[0]), nil
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	var oldState syscall.Termios
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlReadTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	newState := oldState
+	newState.Lflag &^= syscall.ECHO
+	newState.Lflag |= syscall.ICANON | syscall.ISIG
+	newState.Iflag |= syscall.ICRNL
+	if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
+		return nil, err
+	}
+
+	defer func() {
+		syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), ioctlWriteTermios, uintptr(unsafe.Pointer(&oldState)), 0, 0, 0)
+	}()
+
+	var buf [16]byte
+	var ret []byte
+	for {
+		n, err := syscall.Read(fd, buf[:])
+		if err != nil {
+			return nil, err
+		}
+		if n == 0 {
+			if len(ret) == 0 {
+				return nil, io.EOF
+			}
+			break
+		}
+		if buf[n-1] == '\n' {
+			n--
+		}
+		ret = append(ret, buf[:n]...)
+		if n < len(buf) {
+			break
+		}
+	}
+
+	return ret, nil
+}

vendor/github.com/chzyer/readline/term_bsd.go

@@ -0,0 +1,12 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd netbsd openbsd
+
+package readline
+
+import "syscall"
+
+const ioctlReadTermios = syscall.TIOCGETA
+const ioctlWriteTermios = syscall.TIOCSETA

vendor/github.com/chzyer/readline/term_linux.go

@@ -0,0 +1,11 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package readline
+
+// These constants are declared here, rather than importing
+// them from the syscall package as some syscall packages, even
+// on linux, for example gccgo, do not declare them.
+const ioctlReadTermios = 0x5401  // syscall.TCGETS
+const ioctlWriteTermios = 0x5402 // syscall.TCSETS

vendor/github.com/chzyer/readline/term_windows.go

@@ -0,0 +1,171 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build windows
+
+// Package terminal provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := terminal.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer terminal.Restore(0, oldState)
+package readline
+
+import (
+	"io"
+	"syscall"
+	"unsafe"
+)
+
+const (
+	enableLineInput       = 2
+	enableEchoInput       = 4
+	enableProcessedInput  = 1
+	enableWindowInput     = 8
+	enableMouseInput      = 16
+	enableInsertMode      = 32
+	enableQuickEditMode   = 64
+	enableExtendedFlags   = 128
+	enableAutoPosition    = 256
+	enableProcessedOutput = 1
+	enableWrapAtEolOutput = 2
+)
+
+var kernel32 = syscall.NewLazyDLL("kernel32.dll")
+
+var (
+	procGetConsoleMode             = kernel32.NewProc("GetConsoleMode")
+	procSetConsoleMode             = kernel32.NewProc("SetConsoleMode")
+	procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
+)
+
+type (
+	coord struct {
+		x short
+		y short
+	}
+	smallRect struct {
+		left   short
+		top    short
+		right  short
+		bottom short
+	}
+	consoleScreenBufferInfo struct {
+		size              coord
+		cursorPosition    coord
+		attributes        word
+		window            smallRect
+		maximumWindowSize coord
+	}
+)
+
+type State struct {
+	mode uint32
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	var st uint32
+	r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
+	return r != 0 && e == 0
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	var st uint32
+	_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
+	if e != 0 {
+		return nil, error(e)
+	}
+	raw := st &^ (enableEchoInput | enableProcessedInput | enableLineInput | enableProcessedOutput)
+	_, _, e = syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(raw), 0)
+	if e != 0 {
+		return nil, error(e)
+	}
+	return &State{st}, nil
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	var st uint32
+	_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
+	if e != 0 {
+		return nil, error(e)
+	}
+	return &State{st}, nil
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func restoreTerm(fd int, state *State) error {
+	_, _, err := syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(state.mode), 0)
+	return err
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	var info consoleScreenBufferInfo
+	_, _, e := syscall.Syscall(procGetConsoleScreenBufferInfo.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&info)), 0)
+	if e != 0 {
+		return 0, 0, error(e)
+	}
+	return int(info.size.x), int(info.size.y), nil
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	var st uint32
+	_, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(fd), uintptr(unsafe.Pointer(&st)), 0)
+	if e != 0 {
+		return nil, error(e)
+	}
+	old := st
+
+	st &^= (enableEchoInput)
+	st |= (enableProcessedInput | enableLineInput | enableProcessedOutput)
+	_, _, e = syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(st), 0)
+	if e != 0 {
+		return nil, error(e)
+	}
+
+	defer func() {
+		syscall.Syscall(procSetConsoleMode.Addr(), 2, uintptr(fd), uintptr(old), 0)
+	}()
+
+	var buf [16]byte
+	var ret []byte
+	for {
+		n, err := syscall.Read(syscall.Handle(fd), buf[:])
+		if err != nil {
+			return nil, err
+		}
+		if n == 0 {
+			if len(ret) == 0 {
+				return nil, io.EOF
+			}
+			break
+		}
+		if buf[n-1] == '\n' {
+			n--
+		}
+		if n > 0 && buf[n-1] == '\r' {
+			n--
+		}
+		ret = append(ret, buf[:n]...)
+		if n < len(buf) {
+			break
+		}
+	}
+
+	return ret, nil
+}

vendor/github.com/chzyer/readline/terminal.go

@@ -0,0 +1,175 @@
+package readline
+
+import (
+	"bufio"
+	"fmt"
+	"strings"
+	"sync"
+	"sync/atomic"
+)
+
+type Terminal struct {
+	cfg       *Config
+	outchan   chan rune
+	closed    int32
+	stopChan  chan struct{}
+	kickChan  chan struct{}
+	wg        sync.WaitGroup
+	isReading int32
+	sleeping  int32
+}
+
+func NewTerminal(cfg *Config) (*Terminal, error) {
+	if err := cfg.Init(); err != nil {
+		return nil, err
+	}
+	t := &Terminal{
+		cfg:      cfg,
+		kickChan: make(chan struct{}, 1),
+		outchan:  make(chan rune),
+		stopChan: make(chan struct{}, 1),
+	}
+
+	go t.ioloop()
+	return t, nil
+}
+
+// SleepToResume will sleep myself, and return only if I'm resumed.
+func (t *Terminal) SleepToResume() {
+	if !atomic.CompareAndSwapInt32(&t.sleeping, 0, 1) {
+		return
+	}
+	defer atomic.StoreInt32(&t.sleeping, 0)
+
+	t.ExitRawMode()
+	ch := WaitForResume()
+	SuspendMe()
+	<-ch
+	t.EnterRawMode()
+}
+
+func (t *Terminal) EnterRawMode() (err error) {
+	return t.cfg.FuncMakeRaw()
+}
+
+func (t *Terminal) ExitRawMode() (err error) {
+	return t.cfg.FuncExitRaw()
+}
+
+func (t *Terminal) Write(b []byte) (int, error) {
+	return t.cfg.Stdout.Write(b)
+}
+
+func (t *Terminal) Print(s string) {
+	fmt.Fprintf(t.cfg.Stdout, "%s", s)
+}
+
+func (t *Terminal) PrintRune(r rune) {
+	fmt.Fprintf(t.cfg.Stdout, "%c", r)
+}
+
+func (t *Terminal) Readline() *Operation {
+	return NewOperation(t, t.cfg)
+}
+
+// return rune(0) if meet EOF
+func (t *Terminal) ReadRune() rune {
+	ch, ok := <-t.outchan
+	if !ok {
+		return rune(0)
+	}
+	return ch
+}
+
+func (t *Terminal) IsReading() bool {
+	return atomic.LoadInt32(&t.isReading) == 1
+}
+
+func (t *Terminal) KickRead() {
+	select {
+	case t.kickChan <- struct{}{}:
+	default:
+	}
+}
+
+func (t *Terminal) ioloop() {
+	t.wg.Add(1)
+	defer t.wg.Done()
+	var (
+		isEscape       bool
+		isEscapeEx     bool
+		expectNextChar bool
+	)
+
+	buf := bufio.NewReader(t.cfg.Stdin)
+	for {
+		if !expectNextChar {
+			atomic.StoreInt32(&t.isReading, 0)
+			select {
+			case <-t.kickChan:
+				atomic.StoreInt32(&t.isReading, 1)
+			case <-t.stopChan:
+				return
+			}
+		}
+		expectNextChar = false
+		r, _, err := buf.ReadRune()
+		if err != nil {
+			if strings.Contains(err.Error(), "interrupted system call") {
+				expectNextChar = true
+				continue
+			}
+			break
+		}
+
+		if isEscape {
+			isEscape = false
+			if r == CharEscapeEx {
+				expectNextChar = true
+				isEscapeEx = true
+				continue
+			}
+			r = escapeKey(r, buf)
+		} else if isEscapeEx {
+			isEscapeEx = false
+			r = escapeExKey(r, buf)
+		}
+
+		expectNextChar = true
+		switch r {
+		case CharEsc:
+			if t.cfg.VimMode {
+				t.outchan <- r
+				break
+			}
+			isEscape = true
+		case CharInterrupt, CharEnter, CharCtrlJ, CharDelete:
+			expectNextChar = false
+			fallthrough
+		default:
+			t.outchan <- r
+		}
+	}
+	close(t.outchan)
+}
+
+func (t *Terminal) Bell() {
+	fmt.Fprintf(t, "%c", CharBell)
+}
+
+func (t *Terminal) Close() error {
+	if atomic.SwapInt32(&t.closed, 1) != 0 {
+		return nil
+	}
+	t.stopChan <- struct{}{}
+	t.wg.Wait()
+	return t.ExitRawMode()
+}
+
+func (t *Terminal) SetConfig(c *Config) error {
+	if err := c.Init(); err != nil {
+		return err
+	}
+	t.cfg = c
+	return nil
+}

vendor/github.com/chzyer/readline/utils.go

@@ -0,0 +1,176 @@
+package readline
+
+import (
+	"bufio"
+	"bytes"
+	"strconv"
+	"sync"
+	"time"
+)
+
+var (
+	isWindows = false
+)
+
+// WaitForResume need to call before current process got suspend.
+// It will run a ticker until a long duration is occurs,
+// which means this process is resumed.
+func WaitForResume() chan struct{} {
+	ch := make(chan struct{})
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		ticker := time.NewTicker(10 * time.Millisecond)
+		t := time.Now()
+		wg.Done()
+		for {
+			now := <-ticker.C
+			if now.Sub(t) > 100*time.Millisecond {
+				break
+			}
+			t = now
+		}
+		ticker.Stop()
+		ch <- struct{}{}
+	}()
+	wg.Wait()
+	return ch
+}
+
+func Restore(fd int, state *State) error {
+	err := restoreTerm(fd, state)
+	if err != nil {
+		// errno 0 means everything is ok :)
+		if err.Error() == "errno 0" {
+			err = nil
+		}
+	}
+	return nil
+}
+
+func IsPrintable(key rune) bool {
+	isInSurrogateArea := key >= 0xd800 && key <= 0xdbff
+	return key >= 32 && !isInSurrogateArea
+}
+
+// translate Esc[X
+func escapeExKey(r rune, reader *bufio.Reader) rune {
+	switch r {
+	case 'D':
+		r = CharBackward
+	case 'C':
+		r = CharForward
+	case 'A':
+		r = CharPrev
+	case 'B':
+		r = CharNext
+	case 'H':
+		r = CharLineStart
+	case 'F':
+		r = CharLineEnd
+	default:
+		if r == '3' && reader != nil {
+			d, _, _ := reader.ReadRune()
+			if d == '~' {
+				r = CharDelete
+			} else {
+				reader.UnreadRune()
+			}
+		}
+	}
+	return r
+}
+
+// translate EscX to Meta+X
+func escapeKey(r rune, reader *bufio.Reader) rune {
+	switch r {
+	case 'b':
+		r = MetaBackward
+	case 'f':
+		r = MetaForward
+	case 'd':
+		r = MetaDelete
+	case CharTranspose:
+		r = MetaTranspose
+	case CharBackspace:
+		r = MetaBackspace
+	case 'O':
+		d, _, _ := reader.ReadRune()
+		switch d {
+		case 'H':
+			r = CharLineStart
+		case 'F':
+			r = CharLineEnd
+		default:
+			reader.UnreadRune()
+		}
+	case CharEsc:
+
+	}
+	return r
+}
+
+func SplitByLine(start, screenWidth int, rs []rune) []string {
+	var ret []string
+	buf := bytes.NewBuffer(nil)
+	currentWidth := start
+	for _, r := range rs {
+		w := runes.Width(r)
+		currentWidth += w
+		buf.WriteRune(r)
+		if currentWidth >= screenWidth {
+			ret = append(ret, buf.String())
+			buf.Reset()
+			currentWidth = 0
+		}
+	}
+	ret = append(ret, buf.String())
+	return ret
+}
+
+// calculate how many lines for N character
+func LineCount(screenWidth, w int) int {
+	r := w / screenWidth
+	if w%screenWidth != 0 {
+		r++
+	}
+	return r
+}
+
+func IsWordBreak(i rune) bool {
+	switch {
+	case i >= 'a' && i <= 'z':
+	case i >= 'A' && i <= 'Z':
+	case i >= '0' && i <= '9':
+	default:
+		return true
+	}
+	return false
+}
+
+func GetInt(s []string, def int) int {
+	if len(s) == 0 {
+		return def
+	}
+	c, err := strconv.Atoi(s[0])
+	if err != nil {
+		return def
+	}
+	return c
+}
+
+type RawMode struct {
+	state *State
+}
+
+func (r *RawMode) Enter() (err error) {
+	r.state, err = MakeRaw(GetStdin())
+	return err
+}
+
+func (r *RawMode) Exit() error {
+	if r.state == nil {
+		return nil
+	}
+	return Restore(GetStdin(), r.state)
+}

vendor/github.com/chzyer/readline/utils_unix.go

@@ -0,0 +1,90 @@
+// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd
+
+package readline
+
+import (
+	"io"
+	"os"
+	"os/signal"
+	"sync"
+	"syscall"
+	"unsafe"
+)
+
+type winsize struct {
+	Row    uint16
+	Col    uint16
+	Xpixel uint16
+	Ypixel uint16
+}
+
+// SuspendMe use to send suspend signal to myself, when we in the raw mode.
+// For OSX it need to send to parent's pid
+// For Linux it need to send to myself
+func SuspendMe() {
+	p, _ := os.FindProcess(os.Getppid())
+	p.Signal(syscall.SIGTSTP)
+	p, _ = os.FindProcess(os.Getpid())
+	p.Signal(syscall.SIGTSTP)
+}
+
+// get width of the terminal
+func getWidth(stdoutFd int) int {
+	ws := &winsize{}
+	retCode, _, errno := syscall.Syscall(syscall.SYS_IOCTL,
+		uintptr(stdoutFd),
+		uintptr(syscall.TIOCGWINSZ),
+		uintptr(unsafe.Pointer(ws)))
+
+	if int(retCode) == -1 {
+		_ = errno
+		return -1
+	}
+	return int(ws.Col)
+}
+
+func GetScreenWidth() int {
+	w := getWidth(syscall.Stdout)
+	if w < 0 {
+		w = getWidth(syscall.Stderr)
+	}
+	return w
+}
+
+// ClearScreen clears the console screen
+func ClearScreen(w io.Writer) (int, error) {
+	return w.Write([]byte("\033[H"))
+}
+
+func DefaultIsTerminal() bool {
+	return IsTerminal(syscall.Stdin) && (IsTerminal(syscall.Stdout) || IsTerminal(syscall.Stderr))
+}
+
+func GetStdin() int {
+	return syscall.Stdin
+}
+
+// -----------------------------------------------------------------------------
+
+var (
+	widthChange         sync.Once
+	widthChangeCallback func()
+)
+
+func DefaultOnWidthChanged(f func()) {
+	widthChangeCallback = f
+	widthChange.Do(func() {
+		ch := make(chan os.Signal, 1)
+		signal.Notify(ch, syscall.SIGWINCH)
+
+		go func() {
+			for {
+				_, ok := <-ch
+				if !ok {
+					break
+				}
+				widthChangeCallback()
+			}
+		}()
+	})
+}

vendor/github.com/chzyer/readline/utils_windows.go

@@ -0,0 +1,41 @@
+// +build windows
+
+package readline
+
+import (
+	"io"
+	"syscall"
+)
+
+func SuspendMe() {
+}
+
+func GetStdin() int {
+	return int(syscall.Stdin)
+}
+
+func init() {
+	isWindows = true
+}
+
+// get width of the terminal
+func GetScreenWidth() int {
+	info, _ := GetConsoleScreenBufferInfo()
+	if info == nil {
+		return -1
+	}
+	return int(info.dwSize.x)
+}
+
+// ClearScreen clears the console screen
+func ClearScreen(_ io.Writer) error {
+	return SetConsoleCursorPosition(&_COORD{0, 0})
+}
+
+func DefaultIsTerminal() bool {
+	return true
+}
+
+func DefaultOnWidthChanged(func()) {
+
+}

vendor/github.com/chzyer/readline/vim.go

@@ -0,0 +1,174 @@
+package readline
+
+const (
+	VIM_NORMAL = iota
+	VIM_INSERT
+	VIM_VISUAL
+)
+
+type opVim struct {
+	cfg     *Config
+	op      *Operation
+	vimMode int
+}
+
+func newVimMode(op *Operation) *opVim {
+	ov := &opVim{
+		cfg: op.cfg,
+		op:  op,
+	}
+	ov.SetVimMode(ov.cfg.VimMode)
+	return ov
+}
+
+func (o *opVim) SetVimMode(on bool) {
+	if o.cfg.VimMode && !on { // turn off
+		o.ExitVimMode()
+	}
+	o.cfg.VimMode = on
+	o.vimMode = VIM_INSERT
+}
+
+func (o *opVim) ExitVimMode() {
+	o.vimMode = VIM_INSERT
+}
+
+func (o *opVim) IsEnableVimMode() bool {
+	return o.cfg.VimMode
+}
+
+func (o *opVim) handleVimNormalMovement(r rune, readNext func() rune) (t rune, handled bool) {
+	rb := o.op.buf
+	handled = true
+	switch r {
+	case 'h':
+		t = CharBackward
+	case 'j':
+		t = CharNext
+	case 'k':
+		t = CharPrev
+	case 'l':
+		t = CharForward
+	case '0', '^':
+		rb.MoveToLineStart()
+	case '$':
+		rb.MoveToLineEnd()
+	case 'x':
+		rb.Delete()
+		if rb.IsCursorInEnd() {
+			rb.MoveBackward()
+		}
+	case 'r':
+		rb.Replace(readNext())
+	case 'd':
+		next := readNext()
+		switch next {
+		case 'd':
+			rb.Erase()
+		case 'w':
+			rb.DeleteWord()
+		case 'h':
+			rb.Backspace()
+		case 'l':
+			rb.Delete()
+		}
+	case 'b', 'B':
+		rb.MoveToPrevWord()
+	case 'w', 'W':
+		rb.MoveToNextWord()
+	case 'e', 'E':
+		rb.MoveToEndWord()
+	case 'f', 'F', 't', 'T':
+		next := readNext()
+		prevChar := r == 't' || r == 'T'
+		reverse := r == 'F' || r == 'T'
+		switch next {
+		case CharEsc:
+		default:
+			rb.MoveTo(next, prevChar, reverse)
+		}
+	default:
+		return r, false
+	}
+	return t, true
+}
+
+func (o *opVim) handleVimNormalEnterInsert(r rune, readNext func() rune) (t rune, handled bool) {
+	rb := o.op.buf
+	handled = true
+	switch r {
+	case 'i':
+	case 'I':
+		rb.MoveToLineStart()
+	case 'a':
+		rb.MoveForward()
+	case 'A':
+		rb.MoveToLineEnd()
+	case 's':
+		rb.Delete()
+	case 'S':
+		rb.Erase()
+	case 'c':
+		next := readNext()
+		switch next {
+		case 'c':
+			rb.Erase()
+		case 'w':
+			rb.DeleteWord()
+		case 'h':
+			rb.Backspace()
+		case 'l':
+			rb.Delete()
+		}
+	default:
+		return r, false
+	}
+
+	o.EnterVimInsertMode()
+	return
+}
+
+func (o *opVim) HandleVimNormal(r rune, readNext func() rune) (t rune) {
+	switch r {
+	case CharEnter, CharInterrupt:
+		o.ExitVimMode()
+		return r
+	}
+
+	if r, handled := o.handleVimNormalMovement(r, readNext); handled {
+		return r
+	}
+
+	if r, handled := o.handleVimNormalEnterInsert(r, readNext); handled {
+		return r
+	}
+
+	// invalid operation
+	o.op.t.Bell()
+	return 0
+}
+
+func (o *opVim) EnterVimInsertMode() {
+	o.vimMode = VIM_INSERT
+}
+
+func (o *opVim) ExitVimInsertMode() {
+	o.vimMode = VIM_NORMAL
+}
+
+func (o *opVim) HandleVim(r rune, readNext func() rune) rune {
+	if o.vimMode == VIM_NORMAL {
+		return o.HandleVimNormal(r, readNext)
+	}
+	if r == CharEsc {
+		o.ExitVimInsertMode()
+		return 0
+	}
+
+	switch o.vimMode {
+	case VIM_INSERT:
+		return r
+	case VIM_VISUAL:
+	}
+	return r
+}

vendor/github.com/chzyer/readline/windows_api.go

@@ -0,0 +1,152 @@
+// +build windows
+
+package readline
+
+import (
+	"reflect"
+	"syscall"
+	"unsafe"
+)
+
+var (
+	kernel = NewKernel()
+	stdout = uintptr(syscall.Stdout)
+	stdin  = uintptr(syscall.Stdin)
+)
+
+type Kernel struct {
+	SetConsoleCursorPosition,
+	SetConsoleTextAttribute,
+	FillConsoleOutputCharacterW,
+	FillConsoleOutputAttribute,
+	ReadConsoleInputW,
+	GetConsoleScreenBufferInfo,
+	GetConsoleCursorInfo,
+	GetStdHandle CallFunc
+}
+
+type short int16
+type word uint16
+type dword uint32
+type wchar uint16
+
+type _COORD struct {
+	x short
+	y short
+}
+
+func (c *_COORD) ptr() uintptr {
+	return uintptr(*(*int32)(unsafe.Pointer(c)))
+}
+
+const (
+	EVENT_KEY                = 0x0001
+	EVENT_MOUSE              = 0x0002
+	EVENT_WINDOW_BUFFER_SIZE = 0x0004
+	EVENT_MENU               = 0x0008
+	EVENT_FOCUS              = 0x0010
+)
+
+type _KEY_EVENT_RECORD struct {
+	bKeyDown          int32
+	wRepeatCount      word
+	wVirtualKeyCode   word
+	wVirtualScanCode  word
+	unicodeChar       wchar
+	dwControlKeyState dword
+}
+
+// KEY_EVENT_RECORD          KeyEvent;
+// MOUSE_EVENT_RECORD        MouseEvent;
+// WINDOW_BUFFER_SIZE_RECORD WindowBufferSizeEvent;
+// MENU_EVENT_RECORD         MenuEvent;
+// FOCUS_EVENT_RECORD        FocusEvent;
+type _INPUT_RECORD struct {
+	EventType word
+	Padding   uint16
+	Event     [16]byte
+}
+
+type _CONSOLE_SCREEN_BUFFER_INFO struct {
+	dwSize              _COORD
+	dwCursorPosition    _COORD
+	wAttributes         word
+	srWindow            _SMALL_RECT
+	dwMaximumWindowSize _COORD
+}
+
+type _SMALL_RECT struct {
+	left   short
+	top    short
+	right  short
+	bottom short
+}
+
+type _CONSOLE_CURSOR_INFO struct {
+	dwSize   dword
+	bVisible bool
+}
+
+type CallFunc func(u ...uintptr) error
+
+func NewKernel() *Kernel {
+	k := &Kernel{}
+	kernel32 := syscall.NewLazyDLL("kernel32.dll")
+	v := reflect.ValueOf(k).Elem()
+	t := v.Type()
+	for i := 0; i < t.NumField(); i++ {
+		name := t.Field(i).Name
+		f := kernel32.NewProc(name)
+		v.Field(i).Set(reflect.ValueOf(k.Wrap(f)))
+	}
+	return k
+}
+
+func (k *Kernel) Wrap(p *syscall.LazyProc) CallFunc {
+	return func(args ...uintptr) error {
+		var r0 uintptr
+		var e1 syscall.Errno
+		size := uintptr(len(args))
+		if len(args) <= 3 {
+			buf := make([]uintptr, 3)
+			copy(buf, args)
+			r0, _, e1 = syscall.Syscall(p.Addr(), size,
+				buf[0], buf[1], buf[2])
+		} else {
+			buf := make([]uintptr, 6)
+			copy(buf, args)
+			r0, _, e1 = syscall.Syscall6(p.Addr(), size,
+				buf[0], buf[1], buf[2], buf[3], buf[4], buf[5],
+			)
+		}
+
+		if int(r0) == 0 {
+			if e1 != 0 {
+				return error(e1)
+			} else {
+				return syscall.EINVAL
+			}
+		}
+		return nil
+	}
+
+}
+
+func GetConsoleScreenBufferInfo() (*_CONSOLE_SCREEN_BUFFER_INFO, error) {
+	t := new(_CONSOLE_SCREEN_BUFFER_INFO)
+	err := kernel.GetConsoleScreenBufferInfo(
+		stdout,
+		uintptr(unsafe.Pointer(t)),
+	)
+	return t, err
+}
+
+func GetConsoleCursorInfo() (*_CONSOLE_CURSOR_INFO, error) {
+	t := new(_CONSOLE_CURSOR_INFO)
+	err := kernel.GetConsoleCursorInfo(stdout, uintptr(unsafe.Pointer(t)))
+	return t, err
+}
+
+func SetConsoleCursorPosition(c *_COORD) error {
+	return kernel.SetConsoleCursorPosition(stdout, c.ptr())
+}

vendor/github.com/dgrijalva/jwt-go/.gitignore

@@ -0,0 +1,4 @@
+.DS_Store
+bin
+
+

vendor/github.com/dgrijalva/jwt-go/.travis.yml

@@ -0,0 +1,13 @@
+language: go
+
+script:
+    - go vet ./...
+    - go test -v ./...
+
+go:
+  - 1.3
+  - 1.4
+  - 1.5
+  - 1.6
+  - 1.7
+  - tip

vendor/github.com/dgrijalva/jwt-go/LICENSE

@@ -0,0 +1,8 @@
+Copyright (c) 2012 Dave Grijalva
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+

vendor/github.com/dgrijalva/jwt-go/MIGRATION_GUIDE.md

@@ -0,0 +1,97 @@
+## Migration Guide from v2 -> v3
+
+Version 3 adds several new, frequently requested features.  To do so, it introduces a few breaking changes.  We've worked to keep these as minimal as possible.  This guide explains the breaking changes and how you can quickly update your code.
+
+### `Token.Claims` is now an interface type
+
+The most requested feature from the 2.0 verison of this library was the ability to provide a custom type to the JSON parser for claims. This was implemented by introducing a new interface, `Claims`, to replace `map[string]interface{}`.  We also included two concrete implementations of `Claims`: `MapClaims` and `StandardClaims`.
+
+`MapClaims` is an alias for `map[string]interface{}` with built in validation behavior.  It is the default claims type when using `Parse`.  The usage is unchanged except you must type cast the claims property.
+
+The old example for parsing a token looked like this..
+
+```go
+	if token, err := jwt.Parse(tokenString, keyLookupFunc); err == nil {
+		fmt.Printf("Token for user %v expires %v", token.Claims["user"], token.Claims["exp"])
+	}
+```
+
+is now directly mapped to...
+
+```go
+	if token, err := jwt.Parse(tokenString, keyLookupFunc); err == nil {
+		claims := token.Claims.(jwt.MapClaims)
+		fmt.Printf("Token for user %v expires %v", claims["user"], claims["exp"])
+	}
+```
+
+`StandardClaims` is designed to be embedded in your custom type.  You can supply a custom claims type with the new `ParseWithClaims` function.  Here's an example of using a custom claims type.
+
+```go
+	type MyCustomClaims struct {
+		User string
+		*StandardClaims
+	}
+	
+	if token, err := jwt.ParseWithClaims(tokenString, &MyCustomClaims{}, keyLookupFunc); err == nil {
+		claims := token.Claims.(*MyCustomClaims)
+		fmt.Printf("Token for user %v expires %v", claims.User, claims.StandardClaims.ExpiresAt)
+	}
+```
+
+### `ParseFromRequest` has been moved
+
+To keep this library focused on the tokens without becoming overburdened with complex request processing logic, `ParseFromRequest` and its new companion `ParseFromRequestWithClaims` have been moved to a subpackage, `request`.  The method signatues have also been augmented to receive a new argument: `Extractor`.
+
+`Extractors` do the work of picking the token string out of a request.  The interface is simple and composable.
+
+This simple parsing example:
+
+```go
+	if token, err := jwt.ParseFromRequest(tokenString, req, keyLookupFunc); err == nil {
+		fmt.Printf("Token for user %v expires %v", token.Claims["user"], token.Claims["exp"])
+	}
+```
+
+is directly mapped to:
+
+```go
+	if token, err := request.ParseFromRequest(req, request.OAuth2Extractor, keyLookupFunc); err == nil {
+		claims := token.Claims.(jwt.MapClaims)
+		fmt.Printf("Token for user %v expires %v", claims["user"], claims["exp"])
+	}
+```
+
+There are several concrete `Extractor` types provided for your convenience:
+
+* `HeaderExtractor` will search a list of headers until one contains content.
+* `ArgumentExtractor` will search a list of keys in request query and form arguments until one contains content.
+* `MultiExtractor` will try a list of `Extractors` in order until one returns content.
+* `AuthorizationHeaderExtractor` will look in the `Authorization` header for a `Bearer` token.
+* `OAuth2Extractor` searches the places an OAuth2 token would be specified (per the spec): `Authorization` header and `access_token` argument
+* `PostExtractionFilter` wraps an `Extractor`, allowing you to process the content before it's parsed.  A simple example is stripping the `Bearer ` text from a header
+
+
+### RSA signing methods no longer accept `[]byte` keys
+
+Due to a [critical vulnerability](https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/), we've decided the convenience of accepting `[]byte` instead of `rsa.PublicKey` or `rsa.PrivateKey` isn't worth the risk of misuse.
+
+To replace this behavior, we've added two helper methods: `ParseRSAPrivateKeyFromPEM(key []byte) (*rsa.PrivateKey, error)` and `ParseRSAPublicKeyFromPEM(key []byte) (*rsa.PublicKey, error)`.  These are just simple helpers for unpacking PEM encoded PKCS1 and PKCS8 keys. If your keys are encoded any other way, all you need to do is convert them to the `crypto/rsa` package's types.
+
+```go 
+	func keyLookupFunc(*Token) (interface{}, error) {
+		// Don't forget to validate the alg is what you expect:
+		if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
+			return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
+		}
+		
+		// Look up key 
+		key, err := lookupPublicKey(token.Header["kid"])
+		if err != nil {
+			return nil, err
+		}
+		
+		// Unpack key from PEM encoded PKCS8
+		return jwt.ParseRSAPublicKeyFromPEM(key)
+	}
+```

vendor/github.com/dgrijalva/jwt-go/README.md

@@ -0,0 +1,100 @@
+# jwt-go
+
+[![Build Status](https://travis-ci.org/dgrijalva/jwt-go.svg?branch=master)](https://travis-ci.org/dgrijalva/jwt-go)
+[![GoDoc](https://godoc.org/github.com/dgrijalva/jwt-go?status.svg)](https://godoc.org/github.com/dgrijalva/jwt-go)
+
+A [go](http://www.golang.org) (or 'golang' for search engine friendliness) implementation of [JSON Web Tokens](http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html)
+
+**NEW VERSION COMING:** There have been a lot of improvements suggested since the version 3.0.0 released in 2016. I'm working now on cutting two different releases: 3.2.0 will contain any non-breaking changes or enhancements. 4.0.0 will follow shortly which will include breaking changes. See the 4.0.0 milestone to get an idea of what's coming. If you have other ideas, or would like to participate in 4.0.0, now's the time. If you depend on this library and don't want to be interrupted, I recommend you use your dependency mangement tool to pin to version 3. 
+
+**SECURITY NOTICE:** Some older versions of Go have a security issue in the cryotp/elliptic. Recommendation is to upgrade to at least 1.8.3. See issue #216 for more detail.
+
+**SECURITY NOTICE:** It's important that you [validate the `alg` presented is what you expect](https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/). This library attempts to make it easy to do the right thing by requiring key types match the expected alg, but you should take the extra step to verify it in your usage.  See the examples provided.
+
+## What the heck is a JWT?
+
+JWT.io has [a great introduction](https://jwt.io/introduction) to JSON Web Tokens.
+
+In short, it's a signed JSON object that does something useful (for example, authentication).  It's commonly used for `Bearer` tokens in Oauth 2.  A token is made of three parts, separated by `.`'s.  The first two parts are JSON objects, that have been [base64url](http://tools.ietf.org/html/rfc4648) encoded.  The last part is the signature, encoded the same way.
+
+The first part is called the header.  It contains the necessary information for verifying the last part, the signature.  For example, which encryption method was used for signing and what key was used.
+
+The part in the middle is the interesting bit.  It's called the Claims and contains the actual stuff you care about.  Refer to [the RFC](http://self-issued.info/docs/draft-jones-json-web-token.html) for information about reserved keys and the proper way to add your own.
+
+## What's in the box?
+
+This library supports the parsing and verification as well as the generation and signing of JWTs.  Current supported signing algorithms are HMAC SHA, RSA, RSA-PSS, and ECDSA, though hooks are present for adding your own.
+
+## Examples
+
+See [the project documentation](https://godoc.org/github.com/dgrijalva/jwt-go) for examples of usage:
+
+* [Simple example of parsing and validating a token](https://godoc.org/github.com/dgrijalva/jwt-go#example-Parse--Hmac)
+* [Simple example of building and signing a token](https://godoc.org/github.com/dgrijalva/jwt-go#example-New--Hmac)
+* [Directory of Examples](https://godoc.org/github.com/dgrijalva/jwt-go#pkg-examples)
+
+## Extensions
+
+This library publishes all the necessary components for adding your own signing methods.  Simply implement the `SigningMethod` interface and register a factory method using `RegisterSigningMethod`.  
+
+Here's an example of an extension that integrates with the Google App Engine signing tools: https://github.com/someone1/gcp-jwt-go
+
+## Compliance
+
+This library was last reviewed to comply with [RTF 7519](http://www.rfc-editor.org/info/rfc7519) dated May 2015 with a few notable differences:
+
+* In order to protect against accidental use of [Unsecured JWTs](http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html#UnsecuredJWT), tokens using `alg=none` will only be accepted if the constant `jwt.UnsafeAllowNoneSignatureType` is provided as the key.
+
+## Project Status & Versioning
+
+This library is considered production ready.  Feedback and feature requests are appreciated.  The API should be considered stable.  There should be very few backwards-incompatible changes outside of major version updates (and only with good reason).
+
+This project uses [Semantic Versioning 2.0.0](http://semver.org).  Accepted pull requests will land on `master`.  Periodically, versions will be tagged from `master`.  You can find all the releases on [the project releases page](https://github.com/dgrijalva/jwt-go/releases).
+
+While we try to make it obvious when we make breaking changes, there isn't a great mechanism for pushing announcements out to users.  You may want to use this alternative package include: `gopkg.in/dgrijalva/jwt-go.v3`.  It will do the right thing WRT semantic versioning.
+
+**BREAKING CHANGES:*** 
+* Version 3.0.0 includes _a lot_ of changes from the 2.x line, including a few that break the API.  We've tried to break as few things as possible, so there should just be a few type signature changes.  A full list of breaking changes is available in `VERSION_HISTORY.md`.  See `MIGRATION_GUIDE.md` for more information on updating your code.
+
+## Usage Tips
+
+### Signing vs Encryption
+
+A token is simply a JSON object that is signed by its author. this tells you exactly two things about the data:
+
+* The author of the token was in the possession of the signing secret
+* The data has not been modified since it was signed
+
+It's important to know that JWT does not provide encryption, which means anyone who has access to the token can read its contents. If you need to protect (encrypt) the data, there is a companion spec, `JWE`, that provides this functionality. JWE is currently outside the scope of this library.
+
+### Choosing a Signing Method
+
+There are several signing methods available, and you should probably take the time to learn about the various options before choosing one.  The principal design decision is most likely going to be symmetric vs asymmetric.
+
+Symmetric signing methods, such as HSA, use only a single secret. This is probably the simplest signing method to use since any `[]byte` can be used as a valid secret. They are also slightly computationally faster to use, though this rarely is enough to matter. Symmetric signing methods work the best when both producers and consumers of tokens are trusted, or even the same system. Since the same secret is used to both sign and validate tokens, you can't easily distribute the key for validation.
+
+Asymmetric signing methods, such as RSA, use different keys for signing and verifying tokens. This makes it possible to produce tokens with a private key, and allow any consumer to access the public key for verification.
+
+### Signing Methods and Key Types
+
+Each signing method expects a different object type for its signing keys. See the package documentation for details. Here are the most common ones:
+
+* The [HMAC signing method](https://godoc.org/github.com/dgrijalva/jwt-go#SigningMethodHMAC) (`HS256`,`HS384`,`HS512`) expect `[]byte` values for signing and validation
+* The [RSA signing method](https://godoc.org/github.com/dgrijalva/jwt-go#SigningMethodRSA) (`RS256`,`RS384`,`RS512`) expect `*rsa.PrivateKey` for signing and `*rsa.PublicKey` for validation
+* The [ECDSA signing method](https://godoc.org/github.com/dgrijalva/jwt-go#SigningMethodECDSA) (`ES256`,`ES384`,`ES512`) expect `*ecdsa.PrivateKey` for signing and `*ecdsa.PublicKey` for validation
+
+### JWT and OAuth
+
+It's worth mentioning that OAuth and JWT are not the same thing. A JWT token is simply a signed JSON object. It can be used anywhere such a thing is useful. There is some confusion, though, as JWT is the most common type of bearer token used in OAuth2 authentication.
+
+Without going too far down the rabbit hole, here's a description of the interaction of these technologies:
+
+* OAuth is a protocol for allowing an identity provider to be separate from the service a user is logging in to. For example, whenever you use Facebook to log into a different service (Yelp, Spotify, etc), you are using OAuth.
+* OAuth defines several options for passing around authentication data. One popular method is called a "bearer token". A bearer token is simply a string that _should_ only be held by an authenticated user. Thus, simply presenting this token proves your identity. You can probably derive from here why a JWT might make a good bearer token.
+* Because bearer tokens are used for authentication, it's important they're kept secret. This is why transactions that use bearer tokens typically happen over SSL.
+
+## More
+
+Documentation can be found [on godoc.org](http://godoc.org/github.com/dgrijalva/jwt-go).
+
+The command line utility included in this project (cmd/jwt) provides a straightforward example of token creation and parsing as well as a useful tool for debugging your own integration. You'll also find several implementation examples in the documentation.

vendor/github.com/dgrijalva/jwt-go/VERSION_HISTORY.md

@@ -0,0 +1,118 @@
+## `jwt-go` Version History
+
+#### 3.2.0
+
+* Added method `ParseUnverified` to allow users to split up the tasks of parsing and validation
+* HMAC signing method returns `ErrInvalidKeyType` instead of `ErrInvalidKey` where appropriate
+* Added options to `request.ParseFromRequest`, which allows for an arbitrary list of modifiers to parsing behavior. Initial set include `WithClaims` and `WithParser`. Existing usage of this function will continue to work as before.
+* Deprecated `ParseFromRequestWithClaims` to simplify API in the future.
+
+#### 3.1.0
+
+* Improvements to `jwt` command line tool
+* Added `SkipClaimsValidation` option to `Parser`
+* Documentation updates
+
+#### 3.0.0
+
+* **Compatibility Breaking Changes**: See MIGRATION_GUIDE.md for tips on updating your code
+	* Dropped support for `[]byte` keys when using RSA signing methods.  This convenience feature could contribute to security vulnerabilities involving mismatched key types with signing methods.
+	* `ParseFromRequest` has been moved to `request` subpackage and usage has changed
+	* The `Claims` property on `Token` is now type `Claims` instead of `map[string]interface{}`.  The default value is type `MapClaims`, which is an alias to `map[string]interface{}`.  This makes it possible to use a custom type when decoding claims.
+* Other Additions and Changes
+	* Added `Claims` interface type to allow users to decode the claims into a custom type
+	* Added `ParseWithClaims`, which takes a third argument of type `Claims`.  Use this function instead of `Parse` if you have a custom type you'd like to decode into.
+	* Dramatically improved the functionality and flexibility of `ParseFromRequest`, which is now in the `request` subpackage
+	* Added `ParseFromRequestWithClaims` which is the `FromRequest` equivalent of `ParseWithClaims`
+	* Added new interface type `Extractor`, which is used for extracting JWT strings from http requests.  Used with `ParseFromRequest` and `ParseFromRequestWithClaims`.
+	* Added several new, more specific, validation errors to error type bitmask
+	* Moved examples from README to executable example files
+	* Signing method registry is now thread safe
+	* Added new property to `ValidationError`, which contains the raw error returned by calls made by parse/verify (such as those returned by keyfunc or json parser)
+
+#### 2.7.0
+
+This will likely be the last backwards compatible release before 3.0.0, excluding essential bug fixes.
+
+* Added new option `-show` to the `jwt` command that will just output the decoded token without verifying
+* Error text for expired tokens includes how long it's been expired
+* Fixed incorrect error returned from `ParseRSAPublicKeyFromPEM`
+* Documentation updates
+
+#### 2.6.0
+
+* Exposed inner error within ValidationError
+* Fixed validation errors when using UseJSONNumber flag
+* Added several unit tests
+
+#### 2.5.0
+
+* Added support for signing method none.  You shouldn't use this.  The API tries to make this clear.
+* Updated/fixed some documentation
+* Added more helpful error message when trying to parse tokens that begin with `BEARER `
+
+#### 2.4.0
+
+* Added new type, Parser, to allow for configuration of various parsing parameters
+	* You can now specify a list of valid signing methods.  Anything outside this set will be rejected.
+	* You can now opt to use the `json.Number` type instead of `float64` when parsing token JSON
+* Added support for [Travis CI](https://travis-ci.org/dgrijalva/jwt-go)
+* Fixed some bugs with ECDSA parsing
+
+#### 2.3.0
+
+* Added support for ECDSA signing methods
+* Added support for RSA PSS signing methods (requires go v1.4)
+
+#### 2.2.0
+
+* Gracefully handle a `nil` `Keyfunc` being passed to `Parse`.  Result will now be the parsed token and an error, instead of a panic.
+
+#### 2.1.0
+
+Backwards compatible API change that was missed in 2.0.0.
+
+* The `SignedString` method on `Token` now takes `interface{}` instead of `[]byte`
+
+#### 2.0.0
+
+There were two major reasons for breaking backwards compatibility with this update.  The first was a refactor required to expand the width of the RSA and HMAC-SHA signing implementations.  There will likely be no required code changes to support this change.
+
+The second update, while unfortunately requiring a small change in integration, is required to open up this library to other signing methods.  Not all keys used for all signing methods have a single standard on-disk representation.  Requiring `[]byte` as the type for all keys proved too limiting.  Additionally, this implementation allows for pre-parsed tokens to be reused, which might matter in an application that parses a high volume of tokens with a small set of keys.  Backwards compatibilty has been maintained for passing `[]byte` to the RSA signing methods, but they will also accept `*rsa.PublicKey` and `*rsa.PrivateKey`.
+
+It is likely the only integration change required here will be to change `func(t *jwt.Token) ([]byte, error)` to `func(t *jwt.Token) (interface{}, error)` when calling `Parse`.
+
+* **Compatibility Breaking Changes**
+	* `SigningMethodHS256` is now `*SigningMethodHMAC` instead of `type struct`
+	* `SigningMethodRS256` is now `*SigningMethodRSA` instead of `type struct`
+	* `KeyFunc` now returns `interface{}` instead of `[]byte`
+	* `SigningMethod.Sign` now takes `interface{}` instead of `[]byte` for the key
+	* `SigningMethod.Verify` now takes `interface{}` instead of `[]byte` for the key
+* Renamed type `SigningMethodHS256` to `SigningMethodHMAC`.  Specific sizes are now just instances of this type.
+    * Added public package global `SigningMethodHS256`
+    * Added public package global `SigningMethodHS384`
+    * Added public package global `SigningMethodHS512`
+* Renamed type `SigningMethodRS256` to `SigningMethodRSA`.  Specific sizes are now just instances of this type.
+    * Added public package global `SigningMethodRS256`
+    * Added public package global `SigningMethodRS384`
+    * Added public package global `SigningMethodRS512`
+* Moved sample private key for HMAC tests from an inline value to a file on disk.  Value is unchanged.
+* Refactored the RSA implementation to be easier to read
+* Exposed helper methods `ParseRSAPrivateKeyFromPEM` and `ParseRSAPublicKeyFromPEM`
+
+#### 1.0.2
+
+* Fixed bug in parsing public keys from certificates
+* Added more tests around the parsing of keys for RS256
+* Code refactoring in RS256 implementation.  No functional changes
+
+#### 1.0.1
+
+* Fixed panic if RS256 signing method was passed an invalid key
+
+#### 1.0.0
+
+* First versioned release
+* API stabilized
+* Supports creating, signing, parsing, and validating JWT tokens
+* Supports RS256 and HS256 signing methods

vendor/github.com/dgrijalva/jwt-go/claims.go

@@ -0,0 +1,134 @@
+package jwt
+
+import (
+	"crypto/subtle"
+	"fmt"
+	"time"
+)
+
+// For a type to be a Claims object, it must just have a Valid method that determines
+// if the token is invalid for any supported reason
+type Claims interface {
+	Valid() error
+}
+
+// Structured version of Claims Section, as referenced at
+// https://tools.ietf.org/html/rfc7519#section-4.1
+// See examples for how to use this with your own claim types
+type StandardClaims struct {
+	Audience  string `json:"aud,omitempty"`
+	ExpiresAt int64  `json:"exp,omitempty"`
+	Id        string `json:"jti,omitempty"`
+	IssuedAt  int64  `json:"iat,omitempty"`
+	Issuer    string `json:"iss,omitempty"`
+	NotBefore int64  `json:"nbf,omitempty"`
+	Subject   string `json:"sub,omitempty"`
+}
+
+// Validates time based claims "exp, iat, nbf".
+// There is no accounting for clock skew.
+// As well, if any of the above claims are not in the token, it will still
+// be considered a valid claim.
+func (c StandardClaims) Valid() error {
+	vErr := new(ValidationError)
+	now := TimeFunc().Unix()
+
+	// The claims below are optional, by default, so if they are set to the
+	// default value in Go, let's not fail the verification for them.
+	if c.VerifyExpiresAt(now, false) == false {
+		delta := time.Unix(now, 0).Sub(time.Unix(c.ExpiresAt, 0))
+		vErr.Inner = fmt.Errorf("token is expired by %v", delta)
+		vErr.Errors |= ValidationErrorExpired
+	}
+
+	if c.VerifyIssuedAt(now, false) == false {
+		vErr.Inner = fmt.Errorf("Token used before issued")
+		vErr.Errors |= ValidationErrorIssuedAt
+	}
+
+	if c.VerifyNotBefore(now, false) == false {
+		vErr.Inner = fmt.Errorf("token is not valid yet")
+		vErr.Errors |= ValidationErrorNotValidYet
+	}
+
+	if vErr.valid() {
+		return nil
+	}
+
+	return vErr
+}
+
+// Compares the aud claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (c *StandardClaims) VerifyAudience(cmp string, req bool) bool {
+	return verifyAud(c.Audience, cmp, req)
+}
+
+// Compares the exp claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (c *StandardClaims) VerifyExpiresAt(cmp int64, req bool) bool {
+	return verifyExp(c.ExpiresAt, cmp, req)
+}
+
+// Compares the iat claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (c *StandardClaims) VerifyIssuedAt(cmp int64, req bool) bool {
+	return verifyIat(c.IssuedAt, cmp, req)
+}
+
+// Compares the iss claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (c *StandardClaims) VerifyIssuer(cmp string, req bool) bool {
+	return verifyIss(c.Issuer, cmp, req)
+}
+
+// Compares the nbf claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (c *StandardClaims) VerifyNotBefore(cmp int64, req bool) bool {
+	return verifyNbf(c.NotBefore, cmp, req)
+}
+
+// ----- helpers
+
+func verifyAud(aud string, cmp string, required bool) bool {
+	if aud == "" {
+		return !required
+	}
+	if subtle.ConstantTimeCompare([]byte(aud), []byte(cmp)) != 0 {
+		return true
+	} else {
+		return false
+	}
+}
+
+func verifyExp(exp int64, now int64, required bool) bool {
+	if exp == 0 {
+		return !required
+	}
+	return now <= exp
+}
+
+func verifyIat(iat int64, now int64, required bool) bool {
+	if iat == 0 {
+		return !required
+	}
+	return now >= iat
+}
+
+func verifyIss(iss string, cmp string, required bool) bool {
+	if iss == "" {
+		return !required
+	}
+	if subtle.ConstantTimeCompare([]byte(iss), []byte(cmp)) != 0 {
+		return true
+	} else {
+		return false
+	}
+}
+
+func verifyNbf(nbf int64, now int64, required bool) bool {
+	if nbf == 0 {
+		return !required
+	}
+	return now >= nbf
+}

vendor/github.com/dgrijalva/jwt-go/doc.go

@@ -0,0 +1,4 @@
+// Package jwt is a Go implementation of JSON Web Tokens: http://self-issued.info/docs/draft-jones-json-web-token.html
+//
+// See README.md for more info.
+package jwt

vendor/github.com/dgrijalva/jwt-go/ecdsa.go

@@ -0,0 +1,148 @@
+package jwt
+
+import (
+	"crypto"
+	"crypto/ecdsa"
+	"crypto/rand"
+	"errors"
+	"math/big"
+)
+
+var (
+	// Sadly this is missing from crypto/ecdsa compared to crypto/rsa
+	ErrECDSAVerification = errors.New("crypto/ecdsa: verification error")
+)
+
+// Implements the ECDSA family of signing methods signing methods
+// Expects *ecdsa.PrivateKey for signing and *ecdsa.PublicKey for verification
+type SigningMethodECDSA struct {
+	Name      string
+	Hash      crypto.Hash
+	KeySize   int
+	CurveBits int
+}
+
+// Specific instances for EC256 and company
+var (
+	SigningMethodES256 *SigningMethodECDSA
+	SigningMethodES384 *SigningMethodECDSA
+	SigningMethodES512 *SigningMethodECDSA
+)
+
+func init() {
+	// ES256
+	SigningMethodES256 = &SigningMethodECDSA{"ES256", crypto.SHA256, 32, 256}
+	RegisterSigningMethod(SigningMethodES256.Alg(), func() SigningMethod {
+		return SigningMethodES256
+	})
+
+	// ES384
+	SigningMethodES384 = &SigningMethodECDSA{"ES384", crypto.SHA384, 48, 384}
+	RegisterSigningMethod(SigningMethodES384.Alg(), func() SigningMethod {
+		return SigningMethodES384
+	})
+
+	// ES512
+	SigningMethodES512 = &SigningMethodECDSA{"ES512", crypto.SHA512, 66, 521}
+	RegisterSigningMethod(SigningMethodES512.Alg(), func() SigningMethod {
+		return SigningMethodES512
+	})
+}
+
+func (m *SigningMethodECDSA) Alg() string {
+	return m.Name
+}
+
+// Implements the Verify method from SigningMethod
+// For this verify method, key must be an ecdsa.PublicKey struct
+func (m *SigningMethodECDSA) Verify(signingString, signature string, key interface{}) error {
+	var err error
+
+	// Decode the signature
+	var sig []byte
+	if sig, err = DecodeSegment(signature); err != nil {
+		return err
+	}
+
+	// Get the key
+	var ecdsaKey *ecdsa.PublicKey
+	switch k := key.(type) {
+	case *ecdsa.PublicKey:
+		ecdsaKey = k
+	default:
+		return ErrInvalidKeyType
+	}
+
+	if len(sig) != 2*m.KeySize {
+		return ErrECDSAVerification
+	}
+
+	r := big.NewInt(0).SetBytes(sig[:m.KeySize])
+	s := big.NewInt(0).SetBytes(sig[m.KeySize:])
+
+	// Create hasher
+	if !m.Hash.Available() {
+		return ErrHashUnavailable
+	}
+	hasher := m.Hash.New()
+	hasher.Write([]byte(signingString))
+
+	// Verify the signature
+	if verifystatus := ecdsa.Verify(ecdsaKey, hasher.Sum(nil), r, s); verifystatus == true {
+		return nil
+	} else {
+		return ErrECDSAVerification
+	}
+}
+
+// Implements the Sign method from SigningMethod
+// For this signing method, key must be an ecdsa.PrivateKey struct
+func (m *SigningMethodECDSA) Sign(signingString string, key interface{}) (string, error) {
+	// Get the key
+	var ecdsaKey *ecdsa.PrivateKey
+	switch k := key.(type) {
+	case *ecdsa.PrivateKey:
+		ecdsaKey = k
+	default:
+		return "", ErrInvalidKeyType
+	}
+
+	// Create the hasher
+	if !m.Hash.Available() {
+		return "", ErrHashUnavailable
+	}
+
+	hasher := m.Hash.New()
+	hasher.Write([]byte(signingString))
+
+	// Sign the string and return r, s
+	if r, s, err := ecdsa.Sign(rand.Reader, ecdsaKey, hasher.Sum(nil)); err == nil {
+		curveBits := ecdsaKey.Curve.Params().BitSize
+
+		if m.CurveBits != curveBits {
+			return "", ErrInvalidKey
+		}
+
+		keyBytes := curveBits / 8
+		if curveBits%8 > 0 {
+			keyBytes += 1
+		}
+
+		// We serialize the outpus (r and s) into big-endian byte arrays and pad
+		// them with zeros on the left to make sure the sizes work out. Both arrays
+		// must be keyBytes long, and the output must be 2*keyBytes long.
+		rBytes := r.Bytes()
+		rBytesPadded := make([]byte, keyBytes)
+		copy(rBytesPadded[keyBytes-len(rBytes):], rBytes)
+
+		sBytes := s.Bytes()
+		sBytesPadded := make([]byte, keyBytes)
+		copy(sBytesPadded[keyBytes-len(sBytes):], sBytes)
+
+		out := append(rBytesPadded, sBytesPadded...)
+
+		return EncodeSegment(out), nil
+	} else {
+		return "", err
+	}
+}

vendor/github.com/dgrijalva/jwt-go/ecdsa_utils.go

@@ -0,0 +1,67 @@
+package jwt
+
+import (
+	"crypto/ecdsa"
+	"crypto/x509"
+	"encoding/pem"
+	"errors"
+)
+
+var (
+	ErrNotECPublicKey  = errors.New("Key is not a valid ECDSA public key")
+	ErrNotECPrivateKey = errors.New("Key is not a valid ECDSA private key")
+)
+
+// Parse PEM encoded Elliptic Curve Private Key Structure
+func ParseECPrivateKeyFromPEM(key []byte) (*ecdsa.PrivateKey, error) {
+	var err error
+
+	// Parse PEM block
+	var block *pem.Block
+	if block, _ = pem.Decode(key); block == nil {
+		return nil, ErrKeyMustBePEMEncoded
+	}
+
+	// Parse the key
+	var parsedKey interface{}
+	if parsedKey, err = x509.ParseECPrivateKey(block.Bytes); err != nil {
+		return nil, err
+	}
+
+	var pkey *ecdsa.PrivateKey
+	var ok bool
+	if pkey, ok = parsedKey.(*ecdsa.PrivateKey); !ok {
+		return nil, ErrNotECPrivateKey
+	}
+
+	return pkey, nil
+}
+
+// Parse PEM encoded PKCS1 or PKCS8 public key
+func ParseECPublicKeyFromPEM(key []byte) (*ecdsa.PublicKey, error) {
+	var err error
+
+	// Parse PEM block
+	var block *pem.Block
+	if block, _ = pem.Decode(key); block == nil {
+		return nil, ErrKeyMustBePEMEncoded
+	}
+
+	// Parse the key
+	var parsedKey interface{}
+	if parsedKey, err = x509.ParsePKIXPublicKey(block.Bytes); err != nil {
+		if cert, err := x509.ParseCertificate(block.Bytes); err == nil {
+			parsedKey = cert.PublicKey
+		} else {
+			return nil, err
+		}
+	}
+
+	var pkey *ecdsa.PublicKey
+	var ok bool
+	if pkey, ok = parsedKey.(*ecdsa.PublicKey); !ok {
+		return nil, ErrNotECPublicKey
+	}
+
+	return pkey, nil
+}

vendor/github.com/dgrijalva/jwt-go/errors.go

@@ -0,0 +1,59 @@
+package jwt
+
+import (
+	"errors"
+)
+
+// Error constants
+var (
+	ErrInvalidKey      = errors.New("key is invalid")
+	ErrInvalidKeyType  = errors.New("key is of invalid type")
+	ErrHashUnavailable = errors.New("the requested hash function is unavailable")
+)
+
+// The errors that might occur when parsing and validating a token
+const (
+	ValidationErrorMalformed        uint32 = 1 << iota // Token is malformed
+	ValidationErrorUnverifiable                        // Token could not be verified because of signing problems
+	ValidationErrorSignatureInvalid                    // Signature validation failed
+
+	// Standard Claim validation errors
+	ValidationErrorAudience      // AUD validation failed
+	ValidationErrorExpired       // EXP validation failed
+	ValidationErrorIssuedAt      // IAT validation failed
+	ValidationErrorIssuer        // ISS validation failed
+	ValidationErrorNotValidYet   // NBF validation failed
+	ValidationErrorId            // JTI validation failed
+	ValidationErrorClaimsInvalid // Generic claims validation error
+)
+
+// Helper for constructing a ValidationError with a string error message
+func NewValidationError(errorText string, errorFlags uint32) *ValidationError {
+	return &ValidationError{
+		text:   errorText,
+		Errors: errorFlags,
+	}
+}
+
+// The error from Parse if token is not valid
+type ValidationError struct {
+	Inner  error  // stores the error returned by external dependencies, i.e.: KeyFunc
+	Errors uint32 // bitfield.  see ValidationError... constants
+	text   string // errors that do not have a valid error just have text
+}
+
+// Validation error is an error type
+func (e ValidationError) Error() string {
+	if e.Inner != nil {
+		return e.Inner.Error()
+	} else if e.text != "" {
+		return e.text
+	} else {
+		return "token is invalid"
+	}
+}
+
+// No errors
+func (e *ValidationError) valid() bool {
+	return e.Errors == 0
+}

vendor/github.com/dgrijalva/jwt-go/hmac.go

@@ -0,0 +1,95 @@
+package jwt
+
+import (
+	"crypto"
+	"crypto/hmac"
+	"errors"
+)
+
+// Implements the HMAC-SHA family of signing methods signing methods
+// Expects key type of []byte for both signing and validation
+type SigningMethodHMAC struct {
+	Name string
+	Hash crypto.Hash
+}
+
+// Specific instances for HS256 and company
+var (
+	SigningMethodHS256  *SigningMethodHMAC
+	SigningMethodHS384  *SigningMethodHMAC
+	SigningMethodHS512  *SigningMethodHMAC
+	ErrSignatureInvalid = errors.New("signature is invalid")
+)
+
+func init() {
+	// HS256
+	SigningMethodHS256 = &SigningMethodHMAC{"HS256", crypto.SHA256}
+	RegisterSigningMethod(SigningMethodHS256.Alg(), func() SigningMethod {
+		return SigningMethodHS256
+	})
+
+	// HS384
+	SigningMethodHS384 = &SigningMethodHMAC{"HS384", crypto.SHA384}
+	RegisterSigningMethod(SigningMethodHS384.Alg(), func() SigningMethod {
+		return SigningMethodHS384
+	})
+
+	// HS512
+	SigningMethodHS512 = &SigningMethodHMAC{"HS512", crypto.SHA512}
+	RegisterSigningMethod(SigningMethodHS512.Alg(), func() SigningMethod {
+		return SigningMethodHS512
+	})
+}
+
+func (m *SigningMethodHMAC) Alg() string {
+	return m.Name
+}
+
+// Verify the signature of HSXXX tokens.  Returns nil if the signature is valid.
+func (m *SigningMethodHMAC) Verify(signingString, signature string, key interface{}) error {
+	// Verify the key is the right type
+	keyBytes, ok := key.([]byte)
+	if !ok {
+		return ErrInvalidKeyType
+	}
+
+	// Decode signature, for comparison
+	sig, err := DecodeSegment(signature)
+	if err != nil {
+		return err
+	}
+
+	// Can we use the specified hashing method?
+	if !m.Hash.Available() {
+		return ErrHashUnavailable
+	}
+
+	// This signing method is symmetric, so we validate the signature
+	// by reproducing the signature from the signing string and key, then
+	// comparing that against the provided signature.
+	hasher := hmac.New(m.Hash.New, keyBytes)
+	hasher.Write([]byte(signingString))
+	if !hmac.Equal(sig, hasher.Sum(nil)) {
+		return ErrSignatureInvalid
+	}
+
+	// No validation errors.  Signature is good.
+	return nil
+}
+
+// Implements the Sign method from SigningMethod for this signing method.
+// Key must be []byte
+func (m *SigningMethodHMAC) Sign(signingString string, key interface{}) (string, error) {
+	if keyBytes, ok := key.([]byte); ok {
+		if !m.Hash.Available() {
+			return "", ErrHashUnavailable
+		}
+
+		hasher := hmac.New(m.Hash.New, keyBytes)
+		hasher.Write([]byte(signingString))
+
+		return EncodeSegment(hasher.Sum(nil)), nil
+	}
+
+	return "", ErrInvalidKeyType
+}

vendor/github.com/dgrijalva/jwt-go/map_claims.go

@@ -0,0 +1,94 @@
+package jwt
+
+import (
+	"encoding/json"
+	"errors"
+	// "fmt"
+)
+
+// Claims type that uses the map[string]interface{} for JSON decoding
+// This is the default claims type if you don't supply one
+type MapClaims map[string]interface{}
+
+// Compares the aud claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (m MapClaims) VerifyAudience(cmp string, req bool) bool {
+	aud, _ := m["aud"].(string)
+	return verifyAud(aud, cmp, req)
+}
+
+// Compares the exp claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (m MapClaims) VerifyExpiresAt(cmp int64, req bool) bool {
+	switch exp := m["exp"].(type) {
+	case float64:
+		return verifyExp(int64(exp), cmp, req)
+	case json.Number:
+		v, _ := exp.Int64()
+		return verifyExp(v, cmp, req)
+	}
+	return req == false
+}
+
+// Compares the iat claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (m MapClaims) VerifyIssuedAt(cmp int64, req bool) bool {
+	switch iat := m["iat"].(type) {
+	case float64:
+		return verifyIat(int64(iat), cmp, req)
+	case json.Number:
+		v, _ := iat.Int64()
+		return verifyIat(v, cmp, req)
+	}
+	return req == false
+}
+
+// Compares the iss claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (m MapClaims) VerifyIssuer(cmp string, req bool) bool {
+	iss, _ := m["iss"].(string)
+	return verifyIss(iss, cmp, req)
+}
+
+// Compares the nbf claim against cmp.
+// If required is false, this method will return true if the value matches or is unset
+func (m MapClaims) VerifyNotBefore(cmp int64, req bool) bool {
+	switch nbf := m["nbf"].(type) {
+	case float64:
+		return verifyNbf(int64(nbf), cmp, req)
+	case json.Number:
+		v, _ := nbf.Int64()
+		return verifyNbf(v, cmp, req)
+	}
+	return req == false
+}
+
+// Validates time based claims "exp, iat, nbf".
+// There is no accounting for clock skew.
+// As well, if any of the above claims are not in the token, it will still
+// be considered a valid claim.
+func (m MapClaims) Valid() error {
+	vErr := new(ValidationError)
+	now := TimeFunc().Unix()
+
+	if m.VerifyExpiresAt(now, false) == false {
+		vErr.Inner = errors.New("Token is expired")
+		vErr.Errors |= ValidationErrorExpired
+	}
+
+	if m.VerifyIssuedAt(now, false) == false {
+		vErr.Inner = errors.New("Token used before issued")
+		vErr.Errors |= ValidationErrorIssuedAt
+	}
+
+	if m.VerifyNotBefore(now, false) == false {
+		vErr.Inner = errors.New("Token is not valid yet")
+		vErr.Errors |= ValidationErrorNotValidYet
+	}
+
+	if vErr.valid() {
+		return nil
+	}
+
+	return vErr
+}

vendor/github.com/dgrijalva/jwt-go/none.go

@@ -0,0 +1,52 @@
+package jwt
+
+// Implements the none signing method.  This is required by the spec
+// but you probably should never use it.
+var SigningMethodNone *signingMethodNone
+
+const UnsafeAllowNoneSignatureType unsafeNoneMagicConstant = "none signing method allowed"
+
+var NoneSignatureTypeDisallowedError error
+
+type signingMethodNone struct{}
+type unsafeNoneMagicConstant string
+
+func init() {
+	SigningMethodNone = &signingMethodNone{}
+	NoneSignatureTypeDisallowedError = NewValidationError("'none' signature type is not allowed", ValidationErrorSignatureInvalid)
+
+	RegisterSigningMethod(SigningMethodNone.Alg(), func() SigningMethod {
+		return SigningMethodNone
+	})
+}
+
+func (m *signingMethodNone) Alg() string {
+	return "none"
+}
+
+// Only allow 'none' alg type if UnsafeAllowNoneSignatureType is specified as the key
+func (m *signingMethodNone) Verify(signingString, signature string, key interface{}) (err error) {
+	// Key must be UnsafeAllowNoneSignatureType to prevent accidentally
+	// accepting 'none' signing method
+	if _, ok := key.(unsafeNoneMagicConstant); !ok {
+		return NoneSignatureTypeDisallowedError
+	}
+	// If signing method is none, signature must be an empty string
+	if signature != "" {
+		return NewValidationError(
+			"'none' signing method with non-empty signature",
+			ValidationErrorSignatureInvalid,
+		)
+	}
+
+	// Accept 'none' signing method.
+	return nil
+}
+
+// Only allow 'none' signing if UnsafeAllowNoneSignatureType is specified as the key
+func (m *signingMethodNone) Sign(signingString string, key interface{}) (string, error) {
+	if _, ok := key.(unsafeNoneMagicConstant); ok {
+		return "", nil
+	}
+	return "", NoneSignatureTypeDisallowedError
+}

vendor/github.com/dgrijalva/jwt-go/parser.go

@@ -0,0 +1,148 @@
+package jwt
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+type Parser struct {
+	ValidMethods         []string // If populated, only these methods will be considered valid
+	UseJSONNumber        bool     // Use JSON Number format in JSON decoder
+	SkipClaimsValidation bool     // Skip claims validation during token parsing
+}
+
+// Parse, validate, and return a token.
+// keyFunc will receive the parsed token and should return the key for validating.
+// If everything is kosher, err will be nil
+func (p *Parser) Parse(tokenString string, keyFunc Keyfunc) (*Token, error) {
+	return p.ParseWithClaims(tokenString, MapClaims{}, keyFunc)
+}
+
+func (p *Parser) ParseWithClaims(tokenString string, claims Claims, keyFunc Keyfunc) (*Token, error) {
+	token, parts, err := p.ParseUnverified(tokenString, claims)
+	if err != nil {
+		return token, err
+	}
+
+	// Verify signing method is in the required set
+	if p.ValidMethods != nil {
+		var signingMethodValid = false
+		var alg = token.Method.Alg()
+		for _, m := range p.ValidMethods {
+			if m == alg {
+				signingMethodValid = true
+				break
+			}
+		}
+		if !signingMethodValid {
+			// signing method is not in the listed set
+			return token, NewValidationError(fmt.Sprintf("signing method %v is invalid", alg), ValidationErrorSignatureInvalid)
+		}
+	}
+
+	// Lookup key
+	var key interface{}
+	if keyFunc == nil {
+		// keyFunc was not provided.  short circuiting validation
+		return token, NewValidationError("no Keyfunc was provided.", ValidationErrorUnverifiable)
+	}
+	if key, err = keyFunc(token); err != nil {
+		// keyFunc returned an error
+		if ve, ok := err.(*ValidationError); ok {
+			return token, ve
+		}
+		return token, &ValidationError{Inner: err, Errors: ValidationErrorUnverifiable}
+	}
+
+	vErr := &ValidationError{}
+
+	// Validate Claims
+	if !p.SkipClaimsValidation {
+		if err := token.Claims.Valid(); err != nil {
+
+			// If the Claims Valid returned an error, check if it is a validation error,
+			// If it was another error type, create a ValidationError with a generic ClaimsInvalid flag set
+			if e, ok := err.(*ValidationError); !ok {
+				vErr = &ValidationError{Inner: err, Errors: ValidationErrorClaimsInvalid}
+			} else {
+				vErr = e
+			}
+		}
+	}
+
+	// Perform validation
+	token.Signature = parts[2]
+	if err = token.Method.Verify(strings.Join(parts[0:2], "."), token.Signature, key); err != nil {
+		vErr.Inner = err
+		vErr.Errors |= ValidationErrorSignatureInvalid
+	}
+
+	if vErr.valid() {
+		token.Valid = true
+		return token, nil
+	}
+
+	return token, vErr
+}
+
+// WARNING: Don't use this method unless you know what you're doing
+//
+// This method parses the token but doesn't validate the signature. It's only
+// ever useful in cases where you know the signature is valid (because it has
+// been checked previously in the stack) and you want to extract values from
+// it.
+func (p *Parser) ParseUnverified(tokenString string, claims Claims) (token *Token, parts []string, err error) {
+	parts = strings.Split(tokenString, ".")
+	if len(parts) != 3 {
+		return nil, parts, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed)
+	}
+
+	token = &Token{Raw: tokenString}
+
+	// parse Header
+	var headerBytes []byte
+	if headerBytes, err = DecodeSegment(parts[0]); err != nil {
+		if strings.HasPrefix(strings.ToLower(tokenString), "bearer ") {
+			return token, parts, NewValidationError("tokenstring should not contain 'bearer '", ValidationErrorMalformed)
+		}
+		return token, parts, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
+	}
+	if err = json.Unmarshal(headerBytes, &token.Header); err != nil {
+		return token, parts, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
+	}
+
+	// parse Claims
+	var claimBytes []byte
+	token.Claims = claims
+
+	if claimBytes, err = DecodeSegment(parts[1]); err != nil {
+		return token, parts, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
+	}
+	dec := json.NewDecoder(bytes.NewBuffer(claimBytes))
+	if p.UseJSONNumber {
+		dec.UseNumber()
+	}
+	// JSON Decode.  Special case for map type to avoid weird pointer behavior
+	if c, ok := token.Claims.(MapClaims); ok {
+		err = dec.Decode(&c)
+	} else {
+		err = dec.Decode(&claims)
+	}
+	// Handle decode error
+	if err != nil {
+		return token, parts, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
+	}
+
+	// Lookup signature method
+	if method, ok := token.Header["alg"].(string); ok {
+		if token.Method = GetSigningMethod(method); token.Method == nil {
+			return token, parts, NewValidationError("signing method (alg) is unavailable.", ValidationErrorUnverifiable)
+		}
+	} else {
+		return token, parts, NewValidationError("signing method (alg) is unspecified.", ValidationErrorUnverifiable)
+	}
+
+	return token, parts, nil
+}

vendor/github.com/dgrijalva/jwt-go/rsa.go

@@ -0,0 +1,101 @@
+package jwt
+
+import (
+	"crypto"
+	"crypto/rand"
+	"crypto/rsa"
+)
+
+// Implements the RSA family of signing methods signing methods
+// Expects *rsa.PrivateKey for signing and *rsa.PublicKey for validation
+type SigningMethodRSA struct {
+	Name string
+	Hash crypto.Hash
+}
+
+// Specific instances for RS256 and company
+var (
+	SigningMethodRS256 *SigningMethodRSA
+	SigningMethodRS384 *SigningMethodRSA
+	SigningMethodRS512 *SigningMethodRSA
+)
+
+func init() {
+	// RS256
+	SigningMethodRS256 = &SigningMethodRSA{"RS256", crypto.SHA256}
+	RegisterSigningMethod(SigningMethodRS256.Alg(), func() SigningMethod {
+		return SigningMethodRS256
+	})
+
+	// RS384
+	SigningMethodRS384 = &SigningMethodRSA{"RS384", crypto.SHA384}
+	RegisterSigningMethod(SigningMethodRS384.Alg(), func() SigningMethod {
+		return SigningMethodRS384
+	})
+
+	// RS512
+	SigningMethodRS512 = &SigningMethodRSA{"RS512", crypto.SHA512}
+	RegisterSigningMethod(SigningMethodRS512.Alg(), func() SigningMethod {
+		return SigningMethodRS512
+	})
+}
+
+func (m *SigningMethodRSA) Alg() string {
+	return m.Name
+}
+
+// Implements the Verify method from SigningMethod
+// For this signing method, must be an *rsa.PublicKey structure.
+func (m *SigningMethodRSA) Verify(signingString, signature string, key interface{}) error {
+	var err error
+
+	// Decode the signature
+	var sig []byte
+	if sig, err = DecodeSegment(signature); err != nil {
+		return err
+	}
+
+	var rsaKey *rsa.PublicKey
+	var ok bool
+
+	if rsaKey, ok = key.(*rsa.PublicKey); !ok {
+		return ErrInvalidKeyType
+	}
+
+	// Create hasher
+	if !m.Hash.Available() {
+		return ErrHashUnavailable
+	}
+	hasher := m.Hash.New()
+	hasher.Write([]byte(signingString))
+
+	// Verify the signature
+	return rsa.VerifyPKCS1v15(rsaKey, m.Hash, hasher.Sum(nil), sig)
+}
+
+// Implements the Sign method from SigningMethod
+// For this signing method, must be an *rsa.PrivateKey structure.
+func (m *SigningMethodRSA) Sign(signingString string, key interface{}) (string, error) {
+	var rsaKey *rsa.PrivateKey
+	var ok bool
+
+	// Validate type of key
+	if rsaKey, ok = key.(*rsa.PrivateKey); !ok {
+		return "", ErrInvalidKey
+	}
+
+	// Create the hasher
+	if !m.Hash.Available() {
+		return "", ErrHashUnavailable
+	}
+
+	hasher := m.Hash.New()
+	hasher.Write([]byte(signingString))
+
+	// Sign the string and return the encoded bytes
+	if sigBytes, err := rsa.SignPKCS1v15(rand.Reader, rsaKey, m.Hash, hasher.Sum(nil)); err == nil {
+		return EncodeSegment(sigBytes), nil
+	} else {
+		return "", err
+	}
+}

vendor/github.com/dgrijalva/jwt-go/rsa_pss.go

@@ -0,0 +1,126 @@
+// +build go1.4
+
+package jwt
+
+import (
+	"crypto"
+	"crypto/rand"
+	"crypto/rsa"
+)
+
+// Implements the RSAPSS family of signing methods signing methods
+type SigningMethodRSAPSS struct {
+	*SigningMethodRSA
+	Options *rsa.PSSOptions
+}
+
+// Specific instances for RS/PS and company
+var (
+	SigningMethodPS256 *SigningMethodRSAPSS
+	SigningMethodPS384 *SigningMethodRSAPSS
+	SigningMethodPS512 *SigningMethodRSAPSS
+)
+
+func init() {
+	// PS256
+	SigningMethodPS256 = &SigningMethodRSAPSS{
+		&SigningMethodRSA{
+			Name: "PS256",
+			Hash: crypto.SHA256,
+		},
+		&rsa.PSSOptions{
+			SaltLength: rsa.PSSSaltLengthAuto,
+			Hash:       crypto.SHA256,
+		},
+	}
+	RegisterSigningMethod(SigningMethodPS256.Alg(), func() SigningMethod {
+		return SigningMethodPS256
+	})
+
+	// PS384
+	SigningMethodPS384 = &SigningMethodRSAPSS{
+		&SigningMethodRSA{
+			Name: "PS384",
+			Hash: crypto.SHA384,
+		},
+		&rsa.PSSOptions{
+			SaltLength: rsa.PSSSaltLengthAuto,
+			Hash:       crypto.SHA384,
+		},
+	}
+	RegisterSigningMethod(SigningMethodPS384.Alg(), func() SigningMethod {
+		return SigningMethodPS384
+	})
+
+	// PS512
+	SigningMethodPS512 = &SigningMethodRSAPSS{
+		&SigningMethodRSA{
+			Name: "PS512",
+			Hash: crypto.SHA512,
+		},
+		&rsa.PSSOptions{
+			SaltLength: rsa.PSSSaltLengthAuto,
+			Hash:       crypto.SHA512,
+		},
+	}
+	RegisterSigningMethod(SigningMethodPS512.Alg(), func() SigningMethod {
+		return SigningMethodPS512
+	})
+}
+
+// Implements the Verify method from SigningMethod
+// For this verify method, key must be an rsa.PublicKey struct
+func (m *SigningMethodRSAPSS) Verify(signingString, signature string, key interface{}) error {
+	var err error
+
+	// Decode the signature
+	var sig []byte
+	if sig, err = DecodeSegment(signature); err != nil {
+		return err
+	}
+
+	var rsaKey *rsa.PublicKey
+	switch k := key.(type) {
+	case *rsa.PublicKey:
+		rsaKey = k
+	default:
+		return ErrInvalidKey
+	}
+
+	// Create hasher
+	if !m.Hash.Available() {
+		return ErrHashUnavailable
+	}
+	hasher := m.Hash.New()
+	hasher.Write([]byte(signingString))
+
+	return rsa.VerifyPSS(rsaKey, m.Hash, hasher.Sum(nil), sig, m.Options)
+}
+
+// Implements the Sign method from SigningMethod
+// For this signing method, key must be an rsa.PrivateKey struct
+func (m *SigningMethodRSAPSS) Sign(signingString string, key interface{}) (string, error) {
+	var rsaKey *rsa.PrivateKey
+
+	switch k := key.(type) {
+	case *rsa.PrivateKey:
+		rsaKey = k
+	default:
+		return "", ErrInvalidKeyType
+	}
+
+	// Create the hasher
+	if !m.Hash.Available() {
+		return "", ErrHashUnavailable
+	}
+
+	hasher := m.Hash.New()
+	hasher.Write([]byte(signingString))
+
+	// Sign the string and return the encoded bytes
+	if sigBytes, err := rsa.SignPSS(rand.Reader, rsaKey, m.Hash, hasher.Sum(nil), m.Options); err == nil {
+		return EncodeSegment(sigBytes), nil
+	} else {
+		return "", err
+	}
+}