Merge pull request #83 from skamboj/calm-the-thundering-herd

Calm the thundering herd

.dockerignore

@@ -0,0 +1 @@
+.git/

.travis.yml

@@ -1,7 +1,38 @@
 language: go
 
+services:
+  - docker
+
 go:
-  - "1.10.x"
+  - "1.14.x"
   - master
 
-script: go get -u github.com/golang/dep/cmd/dep && make vendor && make
+script:
+  - docker --version
+
+  # build locally and run locally
+  - make clean && make vendor && make && ./bin/goldpinger --help
+
+  # build an image and run the image
+  - make clean && make vendor && make build
+  - docker images
+  - docker run `make version` --help
+
+  # build an image using the multistage builder
+  - make clean && make build-multistage
+  - docker images
+  - docker run `make version` --help
+
+  # build an image with the vendor folder
+  - make clean && make vendor && make vendor-build
+  - docker images
+  - docker run `make version`-vendor --help
+
+deploy:
+  provider: script
+  script: bash docker_deploy.sh
+  skip_cleanup: true
+  on:
+    tags: true
+    go: "1.14.x"
+    condition: -n "$DOCKER_PASSWORD"

Dockerfile

@@ -0,0 +1,23 @@
+FROM golang:1.14-alpine as builder
+
+# Install our build tools
+
+RUN apk add --update git make bash
+
+# Get dependencies
+
+WORKDIR /w
+COPY go.mod go.sum /w/
+RUN go mod download
+
+# Build goldpinger
+
+COPY . ./
+RUN make bin/goldpinger
+
+# Build the asset container, copy over goldpinger
+
+FROM scratch
+COPY --from=builder /w/bin/goldpinger /goldpinger
+COPY ./static /static
+ENTRYPOINT ["/goldpinger", "--static-file-path", "/static"]

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@@ -1,658 +0,0 @@
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-  name = "k8s.io/api"
-  packages = [
-    "admissionregistration/v1alpha1",
-    "admissionregistration/v1beta1",
-    "apps/v1",
-    "apps/v1beta1",
-    "apps/v1beta2",
-    "authentication/v1",
-    "authentication/v1beta1",
-    "authorization/v1",
-    "authorization/v1beta1",
-    "autoscaling/v1",
-    "autoscaling/v2beta1",
-    "autoscaling/v2beta2",
-    "batch/v1",
-    "batch/v1beta1",
-    "batch/v2alpha1",
-    "certificates/v1beta1",
-    "coordination/v1beta1",
-    "core/v1",
-    "events/v1beta1",
-    "extensions/v1beta1",
-    "networking/v1",
-    "policy/v1beta1",
-    "rbac/v1",
-    "rbac/v1alpha1",
-    "rbac/v1beta1",
-    "scheduling/v1alpha1",
-    "scheduling/v1beta1",
-    "settings/v1alpha1",
-    "storage/v1",
-    "storage/v1alpha1",
-    "storage/v1beta1",
-  ]
-  pruneopts = "UT"
-  revision = "fd83cbc87e7632ccd8bbab63d2b673d4e0c631cc"
-  version = "kubernetes-1.12.0"
-
-[[projects]]
-  digest = "1:18f352651d6e8578fdbaf29c68334b042439b288b8ae4112c2b2ba9a6e35ced0"
-  name = "k8s.io/apimachinery"
-  packages = [
-    "pkg/api/errors",
-    "pkg/api/meta",
-    "pkg/api/resource",
-    "pkg/apis/meta/v1",
-    "pkg/apis/meta/v1/unstructured",
-    "pkg/apis/meta/v1beta1",
-    "pkg/conversion",
-    "pkg/conversion/queryparams",
-    "pkg/fields",
-    "pkg/labels",
-    "pkg/runtime",
-    "pkg/runtime/schema",
-    "pkg/runtime/serializer",
-    "pkg/runtime/serializer/json",
-    "pkg/runtime/serializer/protobuf",
-    "pkg/runtime/serializer/recognizer",
-    "pkg/runtime/serializer/streaming",
-    "pkg/runtime/serializer/versioning",
-    "pkg/selection",
-    "pkg/types",
-    "pkg/util/clock",
-    "pkg/util/errors",
-    "pkg/util/framer",
-    "pkg/util/intstr",
-    "pkg/util/json",
-    "pkg/util/naming",
-    "pkg/util/net",
-    "pkg/util/runtime",
-    "pkg/util/sets",
-    "pkg/util/validation",
-    "pkg/util/validation/field",
-    "pkg/util/yaml",
-    "pkg/version",
-    "pkg/watch",
-    "third_party/forked/golang/reflect",
-  ]
-  pruneopts = "UT"
-  revision = "6dd46049f39503a1fc8d65de4bd566829e95faff"
-  version = "kubernetes-1.12.0"
-
-[[projects]]
-  digest = "1:51fd9ac9f2be10d79f5af101a7a1d758ef283fdb028a0d11198754bd3d4a6020"
-  name = "k8s.io/client-go"
-  packages = [
-    "discovery",
-    "kubernetes",
-    "kubernetes/scheme",
-    "kubernetes/typed/admissionregistration/v1alpha1",
-    "kubernetes/typed/admissionregistration/v1beta1",
-    "kubernetes/typed/apps/v1",
-    "kubernetes/typed/apps/v1beta1",
-    "kubernetes/typed/apps/v1beta2",
-    "kubernetes/typed/authentication/v1",
-    "kubernetes/typed/authentication/v1beta1",
-    "kubernetes/typed/authorization/v1",
-    "kubernetes/typed/authorization/v1beta1",
-    "kubernetes/typed/autoscaling/v1",
-    "kubernetes/typed/autoscaling/v2beta1",
-    "kubernetes/typed/autoscaling/v2beta2",
-    "kubernetes/typed/batch/v1",
-    "kubernetes/typed/batch/v1beta1",
-    "kubernetes/typed/batch/v2alpha1",
-    "kubernetes/typed/certificates/v1beta1",
-    "kubernetes/typed/coordination/v1beta1",
-    "kubernetes/typed/core/v1",
-    "kubernetes/typed/events/v1beta1",
-    "kubernetes/typed/extensions/v1beta1",
-    "kubernetes/typed/networking/v1",
-    "kubernetes/typed/policy/v1beta1",
-    "kubernetes/typed/rbac/v1",
-    "kubernetes/typed/rbac/v1alpha1",
-    "kubernetes/typed/rbac/v1beta1",
-    "kubernetes/typed/scheduling/v1alpha1",
-    "kubernetes/typed/scheduling/v1beta1",
-    "kubernetes/typed/settings/v1alpha1",
-    "kubernetes/typed/storage/v1",
-    "kubernetes/typed/storage/v1alpha1",
-    "kubernetes/typed/storage/v1beta1",
-    "pkg/apis/clientauthentication",
-    "pkg/apis/clientauthentication/v1alpha1",
-    "pkg/apis/clientauthentication/v1beta1",
-    "pkg/version",
-    "plugin/pkg/client/auth/exec",
-    "rest",
-    "rest/watch",
-    "tools/auth",
-    "tools/clientcmd",
-    "tools/clientcmd/api",
-    "tools/clientcmd/api/latest",
-    "tools/clientcmd/api/v1",
-    "tools/metrics",
-    "tools/reference",
-    "transport",
-    "util/cert",
-    "util/connrotation",
-    "util/flowcontrol",
-    "util/homedir",
-    "util/integer",
-  ]
-  pruneopts = "UT"
-  revision = "1638f8970cefaa404ff3a62950f88b08292b2696"
-  version = "v9.0.0"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  input-imports = [
-    "github.com/bloomberg/goldpinger/pkg/client",
-    "github.com/bloomberg/goldpinger/pkg/client/operations",
-    "github.com/bloomberg/goldpinger/pkg/goldpinger",
-    "github.com/bloomberg/goldpinger/pkg/models",
-    "github.com/bloomberg/goldpinger/pkg/restapi",
-    "github.com/bloomberg/goldpinger/pkg/restapi/operations",
-    "github.com/go-openapi/errors",
-    "github.com/go-openapi/loads",
-    "github.com/go-openapi/runtime",
-    "github.com/go-openapi/runtime/client",
-    "github.com/go-openapi/runtime/flagext",
-    "github.com/go-openapi/runtime/middleware",
-    "github.com/go-openapi/runtime/security",
-    "github.com/go-openapi/spec",
-    "github.com/go-openapi/strfmt",
-    "github.com/go-openapi/swag",
-    "github.com/go-openapi/validate",
-    "github.com/jessevdk/go-flags",
-    "github.com/prometheus/client_golang/prometheus",
-    "github.com/prometheus/client_golang/prometheus/promhttp",
-    "golang.org/x/net/context",
-    "golang.org/x/net/netutil",
-    "k8s.io/apimachinery/pkg/apis/meta/v1",
-    "k8s.io/client-go/kubernetes",
-    "k8s.io/client-go/rest",
-    "k8s.io/client-go/tools/clientcmd",
-  ]
-  solver-name = "gps-cdcl"
-  solver-version = 1

Gopkg.toml

@@ -1,78 +0,0 @@
-# Gopkg.toml example
-#
-# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
-# for detailed Gopkg.toml documentation.
-#
-# required = ["github.com/user/thing/cmd/thing"]
-# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
-#
-# [[constraint]]
-#   name = "github.com/user/project"
-#   version = "1.0.0"
-#
-# [[constraint]]
-#   name = "github.com/user/project2"
-#   branch = "dev"
-#   source = "github.com/myfork/project2"
-#
-# [[override]]
-#   name = "github.com/x/y"
-#   version = "2.4.0"
-#
-# [prune]
-#   non-go = false
-#   go-tests = true
-#   unused-packages = true
-
-
-[[constraint]]
-  name = "github.com/go-openapi/errors"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/loads"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/runtime"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/spec"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/strfmt"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/swag"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/validate"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/jessevdk/go-flags"
-  version = "1.4.0"
-
-[[constraint]]
-  name = "github.com/prometheus/client_golang"
-  version = "0.9.1"
-
-[[constraint]]
-  branch = "master"
-  name = "golang.org/x/net"
-
-[[constraint]]
-  name = "k8s.io/apimachinery"
-  version = "kubernetes-1.12.0"
-
-[[constraint]]
-  name = "k8s.io/client-go"
-  version = "9.0.0"
-
-[prune]
-  go-tests = true
-  unused-packages = true

Makefile

@@ -1,14 +1,15 @@
 name ?= goldpinger
-version ?= 1.0.2
+version ?= v3.0.0
 bin ?= goldpinger
 pkg ?= "github.com/bloomberg/goldpinger"
 tag = $(name):$(version)
-namespace ?= ""
+goos ?= ${GOOS}
+namespace ?= "bloomberg/"
 files = $(shell find . -iname "*.go")
 
 
 bin/$(bin): $(files)
-	PKG=${pkg} ARCH=amd64 VERSION=${version} BIN=${bin} ./build/build.sh
+	GOOS=${goos} PKG=${pkg} ARCH=amd64 VERSION=${version} BIN=${bin} ./build/build.sh
 
 clean:
 	rm -rf ./vendor
@@ -16,22 +17,41 @@ clean:
 
 vendor:
 	rm -rf ./vendor
-	dep ensure -v
+	go mod vendor
 
+# Download the latest swagger releases from: https://github.com/go-swagger/go-swagger/releases/
 swagger:
 	swagger generate server -t pkg -f ./swagger.yml --exclude-main -A goldpinger && \
 	swagger generate client -t pkg -f ./swagger.yml -A goldpinger
 
+build-multistage:
+	docker build -t $(tag) -f ./Dockerfile .
+
+build: GOOS=linux
 build: bin/$(bin)
-	sudo docker build -t $(tag) -f ./build/Dockerfile .
+	docker build -t $(tag) -f ./build/Dockerfile-simple .
 
 tag:
-	sudo docker tag $(tag) $(namespace)$(tag)
+	docker tag $(tag) $(namespace)$(tag)
 
 push:
-	sudo docker push $(namespace)$(tag)
+	docker push $(namespace)$(tag)
 
 run:
 	go run ./cmd/goldpinger/main.go
 
-.PHONY: clean vendor build-swagger build tag push run
+version:
+	@echo $(tag)
+
+
+vendor-build:
+	docker build -t $(tag)-vendor --build-arg TAG=$(tag) -f ./build/Dockerfile-vendor .
+
+vendor-tag:
+	docker tag $(tag)-vendor $(namespace)$(tag)-vendor
+
+vendor-push:
+	docker push $(namespace)$(tag)-vendor
+
+
+.PHONY: clean vendor swagger build build-multistage vendor-build vendor-tag vendor-push tag push run version

README.md

@@ -3,27 +3,32 @@
 __Goldpinger__ makes calls between its instances for visibility and alerting.
 It runs as a `DaemonSet` on `Kubernetes` and produces `Prometheus` metrics that can be scraped, visualised and alerted on.
 
-Oh, and it gives you the graph below for your cluster.
+Oh, and it gives you the graph below for your cluster. Check out the [video explainer](https://youtu.be/DSFxRz_0TU4).
 
 ![](./extras/screenshot.png)
 
 
 ## On the menu
 
-- [Rationale](#rationale)
-- [Quick start](#quick-start)
-- [Building](#building)
-- [Installation](#installation)
-  - [Authentication with Kubernetes API](#authentication-with-kubernetes-api)
-  - [Example YAML](#example-yaml)
-- [Usage](#usage)
-  - [UI](#ui)
-  - [API](#api)
-  - [Prometheus](#prometheus)
-  - [Grafana](#grafana)
-  - [Alert Manager](#alert-manager)
-- [Contributions](#contributions)
-- [License](#license)
+- [Goldpinger ![Build Status](https://travis-ci.com/bloomberg/goldpinger)](#goldpinger-build-statushttpstravis-cicombloomberggoldpinger)
+  - [On the menu](#on-the-menu)
+  - [Rationale](#rationale)
+  - [Quick start](#quick-start)
+  - [Building](#building)
+    - [Compiling using a multi-stage Dockerfile](#compiling-using-a-multi-stage-dockerfile)
+    - [Compiling locally](#compiling-locally)
+  - [Installation](#installation)
+    - [Authentication with Kubernetes API](#authentication-with-kubernetes-api)
+    - [Example YAML](#example-yaml)
+    - [Note on DNS](#note-on-dns)
+  - [Usage](#usage)
+    - [UI](#ui)
+    - [API](#api)
+    - [Prometheus](#prometheus)
+    - [Grafana](#grafana)
+    - [Alert Manager](#alert-manager)
+  - [Contributions](#contributions)
+  - [License](#license)
 
 ## Rationale
 
@@ -31,40 +36,64 @@ We built __Goldpinger__ to troubleshoot, visualise and alert on our networking l
 
 It's small, simple and you'll wonder why you hadn't had it before.
 
+If you'd like to know more, you can watch [our presentation at Kubecon 2018 Seattle](https://youtu.be/DSFxRz_0TU4).
+
 
 ## Quick start
 
+Getting from sources:
+
 ```sh
 go get github.com/bloomberg/goldpinger/cmd/goldpinger
 goldpinger --help
 ```
 
-Note, that in order to guarantee correct versions of dependencies, the project [uses `dep`](./Makefile).
+Getting from [docker hub](https://hub.docker.com/r/bloomberg/goldpinger):
 
+```sh
+# get from docker hub
+docker pull bloomberg/goldpinger
+```
 
 ## Building
 
-In order to build `Goldpinger`, you are going to need `go` version 1.10+, `dep`, and `docker`.
+The repo comes with two ways of building a `docker` image: compiling locally, and compiling using a multi-stage `Dockerfile` image. :warning: Depending on your `docker` setup, you might need to prepend the commands below with `sudo`.
 
-Building from source code consists of compiling the binary and building a [Docker image](./build/Dockerfile):
+### Compiling using a multi-stage Dockerfile
+
+You will need `docker` version 17.05+ installed to support multi-stage builds.
 
 ```sh
-# step 0: check out the code into your $GOPATH
-go get github.com/bloomberg/goldpinger/cmd/goldpinger 
-cd $GOPATH/src/github.com/bloomberg/goldpinger
+# step 1: launch the build
+make build-multistage
 
-# step 1: download the dependencies via dep ensure
-make vendor
+# step 2: push the image somewhere
+namespace="docker.io/myhandle/" make tag
+namespace="docker.io/myhandle/" make push
+```
 
-# step 2: compile the binary for the desired architecture
+This was contributed via [@michiel](https://github.com/michiel) - kudos !
+
+### Compiling locally
+
+In order to build `Goldpinger`, you are going to need `go` version 1.13+ and `docker`.
+
+Building from source code consists of compiling the binary and building a [Docker image](./build/Dockerfile-simple):
+
+```sh
+# step 0: check out the code
+git clone https://github.com/bloomberg/goldpinger.git
+cd goldpinger
+
+# step 1: compile the binary for the desired architecture
 make bin/goldpinger
 # at this stage you should be able to run the binary
 ./bin/goldpinger --help
 
-# step 3: build the docker image containing the binary
+# step 2: build the docker image containing the binary
 make build
 
-# step 4: push the image somewhere
+# step 3: push the image somewhere
 namespace="docker.io/myhandle/" make tag
 namespace="docker.io/myhandle/" make push
 ```
@@ -80,7 +109,7 @@ namespace="docker.io/myhandle/" make push
 ### Example YAML
 
 
-Here's an example of what you can do (using the in-cluster authentication to `Kubernetes` apiserver):
+Here's an example of what you can do (using the in-cluster authentication to `Kubernetes` apiserver).
 
 ```yaml
 ---
@@ -88,67 +117,147 @@ apiVersion: apps/v1
 kind: DaemonSet
 metadata:
   name: goldpinger
+  namespace: default
+  labels:
+    app: goldpinger
 spec:
   updateStrategy:
     type: RollingUpdate
   selector:
     matchLabels:
       app: goldpinger
-      version: "1.0.0"
   template:
     metadata:
+      annotations:
+        prometheus.io/scrape: 'true'
+        prometheus.io/port: '8080'
       labels:
         app: goldpinger
-        version: "1.0.0"
     spec:
+      serviceAccount: "goldpinger-serviceaccount"
+      tolerations:
+        - key: node-role.kubernetes.io/master
+          effect: NoSchedule
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        fsGroup: 2000
       containers:
         - name: goldpinger
           env:
             - name: HOST
               value: "0.0.0.0"
             - name: PORT
-              value: "80"
+              value: "8080"
             # injecting real hostname will make for easier to understand graphs/metrics
             - name: HOSTNAME
               valueFrom:
                 fieldRef:
                   fieldPath: spec.nodeName
-          image: "docker.io/mynamespace-replaceme/goldpinger:1.0.0"
+            # podIP is used to select a randomized subset of nodes to ping.
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+          image: "docker.io/bloomberg/goldpinger:2.0.2"
+          imagePullPolicy: Always
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+          resources:
+            limits:
+              memory: 80Mi
+            requests:
+              cpu: 1m
+              memory: 40Mi
           ports:
-            - containerPort: 80
+            - containerPort: 8080
               name: http
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
 ---
 apiVersion: v1
 kind: Service
 metadata:
   name: goldpinger
+  namespace: default
   labels:
     app: goldpinger
 spec:
   type: NodePort
   ports:
-    - port: 80
+    - port: 8080
       nodePort: 30080
       name: http
   selector:
     app: goldpinger
 ```
 
+Note, that you will also need to add an RBAC rule to allow `Goldpinger` to list other pods. If you're just playing around, you can consider a view-all default rule:
+
+```yaml
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: default
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: view
+subjects:
+  - kind: ServiceAccount
+    name: default
+    namespace: default
+```
+
 You can also see [an example of using `kubeconfig` in the `./extras`](./extras/example-with-kubeconfig.yaml).
 
+### Note on DNS
+
+Note, that on top of resolving the other pods, all instances can also try to resolve arbitrary DNS. This allows you to test your DNS setup.
+
+From `--help`:
+
+```sh
+--host-to-resolve=      A host to attempt dns resolve on (space delimited) [$HOSTS_TO_RESOLVE]
+```
+
+So in order to test two domains, we could add an extra env var to the example above:
+
+```yaml
+            - name: HOSTS_TO_RESOLVE
+              value: "www.bloomberg.com one.two.three"
+```
+
+and `goldpinger` should show something like this:
+
+![screenshot-DNS-resolution](./extras/dns-screenshot.png)
+
+
 ## Usage
 
 ### UI
 
 Once you have it running, you can hit any of the nodes (port 30080 in the example above) and see the UI.
 
-![](./extras/screenshot.png)
+![](./extras/screenshot-big.png)
 
 You can click on various nodes to gray out the clutter and see more information.
 
 ### API
 
-The API exposed is via a well-defined [`Swagger` spec](./swagger.yml). 
+The API exposed is via a well-defined [`Swagger` spec](./swagger.yml).
 
 The spec is used to generate both the server and the client of `Goldpinger`. If you make changes, you can re-generate them using [go-swagger](https://github.com/go-swagger/go-swagger) via [`make swagger`](./Makefile)
 
@@ -180,8 +289,8 @@ To get you started, here's a rule that will trigger an alert if there are any no
 
 ```yaml
 alert: goldpinger_nodes_unhealthy
-expr: sum(goldpinger_nodes_healthy_total{status="unhealthy"})
-  BY (goldpinger_instance) > 0
+expr: sum(goldpinger_nodes_health_total{status="unhealthy"})
+  BY (instance, goldpinger_instance) > 0
 for: 5m
 annotations:
   description: |
@@ -204,3 +313,5 @@ Before you create that PR, please make sure you read [CONTRIBUTING](./CONTRIBUTI
 ## License
 
 Please read the [LICENSE](./LICENSE) file here.
+
+For each version built by travis, there is also an additional version, appended with `-vendor`, which contains all source code of the dependencies used in `goldpinger`.

build/Dockerfile-simple

@@ -1,6 +1,6 @@
 FROM scratch
 
-ADD bin/goldpinger /goldpinger 
-COPY static/index.html /static/index.html
+COPY bin/goldpinger /goldpinger
+COPY static /static
 
 ENTRYPOINT ["/goldpinger", "--static-file-path", "/static"]

build/Dockerfile-vendor

@@ -0,0 +1,3 @@
+ARG TAG
+FROM $TAG
+COPY vendor /goldpinger-vendor-sources

build/build.sh

@@ -35,6 +35,7 @@ fi
 
 export CGO_ENABLED=0
 export GOARCH="${ARCH}"
+export GOOS=${GOOS:-}
 
 go build \
     -ldflags "-X 'main.Version=${VERSION}' -X 'main.Build=`date`'" \

cmd/goldpinger/main.go

@@ -15,17 +15,18 @@
 package main
 
 import (
-	"log"
 	"os"
+	"strconv"
 
 	"github.com/go-openapi/loads"
+	"go.uber.org/zap"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"
 
-	"github.com/bloomberg/goldpinger/pkg/goldpinger"
-	"github.com/bloomberg/goldpinger/pkg/restapi"
-	"github.com/bloomberg/goldpinger/pkg/restapi/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/goldpinger"
+	"github.com/bloomberg/goldpinger/v3/pkg/restapi"
+	"github.com/bloomberg/goldpinger/v3/pkg/restapi/operations"
 	flags "github.com/jessevdk/go-flags"
 )
 
@@ -34,14 +35,37 @@ var (
 	Version, Build string
 )
 
-func main() {
+func getLogger() *zap.Logger {
+	var logger *zap.Logger
+	var err error
 
-	log.Println("Goldpinger version:", Version, "build:", Build)
+	// We haven't parsed flags at this stage and that might be error prone
+	// so just use an envvar
+	if debug, err := strconv.ParseBool(os.Getenv("DEBUG")); err == nil && debug {
+		logger, err = zap.NewDevelopment()
+	} else {
+		logger, err = zap.NewProduction()
+	}
+	if err != nil {
+		panic(err)
+	}
+	zap.ReplaceGlobals(logger)
+	return logger
+}
+
+func main() {
+	logger := getLogger()
+	defer logger.Sync()
+
+	undo := zap.RedirectStdLog(logger)
+	defer undo()
+
+	logger.Info("Goldpinger", zap.String("version", Version), zap.String("build", Build))
 
 	// load embedded swagger file
 	swaggerSpec, err := loads.Analyzed(restapi.SwaggerJSON, "")
 	if err != nil {
-		log.Fatalln(err)
+		logger.Error("Coud not parse swagger", zap.Error(err))
 	}
 
 	// create new service API
@@ -58,7 +82,7 @@ func main() {
 	for _, optsGroup := range api.CommandLineOptionsGroups {
 		_, err := parser.AddGroup(optsGroup.ShortDescription, optsGroup.LongDescription, optsGroup.Options)
 		if err != nil {
-			log.Fatalln(err)
+			logger.Error("Coud not add flag group", zap.Error(err))
 		}
 	}
 
@@ -75,19 +99,19 @@ func main() {
 	// make a kubernetes client
 	var config *rest.Config
 	if goldpinger.GoldpingerConfig.KubeConfigPath == "" {
-		log.Println("Kubeconfig not specified, trying to use in cluster config")
+		logger.Info("Kubeconfig not specified, trying to use in cluster config")
 		config, err = rest.InClusterConfig()
 	} else {
-		log.Println("Kubeconfig specified in ", goldpinger.GoldpingerConfig.KubeConfigPath)
+		logger.Info("Kubeconfig specified", zap.String("path", goldpinger.GoldpingerConfig.KubeConfigPath))
 		config, err = clientcmd.BuildConfigFromFlags("", goldpinger.GoldpingerConfig.KubeConfigPath)
 	}
 	if err != nil {
-		log.Fatalln("Error getting config ", err.Error())
+		logger.Fatal("Error getting config ", zap.Error(err))
 	}
 	// create the clientset
 	clientset, err := kubernetes.NewForConfig(config)
 	if err != nil {
-		log.Fatalln("kubernetes.NewForConfig error ", err.Error())
+		logger.Fatal("kubernetes.NewForConfig error ", zap.Error(err))
 	}
 	goldpinger.GoldpingerConfig.KubernetesClient = clientset
 
@@ -96,13 +120,20 @@ func main() {
 		goldpinger.GoldpingerConfig.Port = server.Port
 	}
 
+	if goldpinger.GoldpingerConfig.PodIP == "" {
+		logger.Info("PodIP not set: pinging all pods")
+	}
+	if goldpinger.GoldpingerConfig.PingNumber == 0 {
+		logger.Info("--ping-number set to 0: pinging all pods")
+	}
+
 	server.ConfigureAPI()
 	goldpinger.StartUpdater()
 
-	log.Println("All good, starting serving the API")
+	logger.Info("All good, starting serving the API")
 
 	// serve API
 	if err := server.Serve(); err != nil {
-		log.Fatalln(err)
+		logger.Fatal("Error serving the API", zap.Error(err))
 	}
 }

docker_deploy.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+docker login -u "$DOCKER_USER" -p "$DOCKER_PASSWORD" \
+    && make tag \
+    && make push \
+    && make vendor-tag \
+    && make vendor-push
+

extras/example-serviceaccounts.yml

@@ -0,0 +1,117 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: goldpinger-serviceaccount
+  namespace: default
+
+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: goldpinger
+  namespace: default
+  labels:
+    app: goldpinger
+spec:
+  updateStrategy:
+    type: RollingUpdate
+  selector:
+    matchLabels:
+      app: goldpinger
+  template:
+    metadata:
+      labels:
+        app: goldpinger
+    spec:
+      serviceAccount: "goldpinger-serviceaccount"
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        fsGroup: 2000
+      containers:
+        - name: goldpinger
+          env:
+            - name: HOST
+              value: "0.0.0.0"
+            - name: PORT
+              value: "8080"
+            # injecting real hostname will make for easier to understand graphs/metrics
+            - name: HOSTNAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+            # podIP is used to select a randomized subset of nodes to ping.
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+          image: "docker.io/bloomberg/goldpinger:2.0.0"
+          imagePullPolicy: Always
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+          resources:
+            limits:
+              memory: 80Mi
+            requests:
+              cpu: 1m
+              memory: 40Mi
+          ports:
+            - containerPort: 8080
+              name: http
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: goldpinger
+  namespace: default
+  labels:
+    app: goldpinger
+spec:
+  type: NodePort
+  ports:
+    - port: 8080
+      nodePort: 30080
+      name: http
+  selector:
+    app: goldpinger
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: goldpinger-clusterrole
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - pods
+  verbs:
+  - list
+
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: goldpinger-clusterrolebinding
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: goldpinger-clusterrole
+subjects:
+  - kind: ServiceAccount
+    name: goldpinger-serviceaccount
+    namespace: default
+

extras/example-with-kubeconfig.yaml

@@ -5,20 +5,24 @@ metadata:
   name: goldpinger
   labels:
     app: goldpinger
-    version: "1.0.0"
+    version: "2.0.0"
 spec:
   updateStrategy:
     type: RollingUpdate
   selector:
     matchLabels:
       app: goldpinger
-      version: "1.0.0"
+      version: "2.0.0"
   template:
     metadata:
       labels:
         app: goldpinger
-        version: "1.0.0"
+        version: "2.0.0"
     spec:
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        fsGroup: 2000
       # if you'd like to use a secret to inject a kubeconfig, you can do it like this
       volumes:
       - name: kubeconfig
@@ -30,11 +34,11 @@ spec:
             - name: HOST
               value: "0.0.0.0"
             - name: PORT
-              value: "80"
+              value: "8080"
             # kubeconfig needs to match the location of what's injected in the secret
             # if not specified goldpinger will default to using in-cluster config
             - name: KUBECONFIG
-              value: "./kube/config"
+              value: "/.kube/config"
             # refresh interval (seconds) tells goldpinger to call every other instance with that frequency (set to 0 to disable)
             - name: REFRESH_INTERVAL
               value: "30"
@@ -43,10 +47,37 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: spec.nodeName
-          image: "docker.io/mynamespace-replaceme/goldpinger:1.0.0"
+            # podIP is used to select randomized subset of nodes to ping.
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+          image: "docker.io/bloomberg/goldpinger:2.0.0"
+          imagePullPolicy: Always
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+          resources:
+            limits:
+              memory: 80Mi
+            requests:
+              cpu: 1m
+              memory: 40Mi
           ports:
-            - containerPort: 80
+            - containerPort: 8080
               name: http
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
           volumeMounts:
           - mountPath: /.kube/
             name: kubeconfig
@@ -61,7 +92,7 @@ metadata:
 spec:
   type: NodePort
   ports:
-    - port: 80
+    - port: 8080
       nodePort: 30080
       name: http
   selector:

extras/goldpinger-dashboard.json

@@ -33,7 +33,7 @@
             "rgba(237, 129, 40, 0.89)",
             "rgba(245, 54, 54, 0.9)"
           ],
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "format": "none",
@@ -113,7 +113,7 @@
             "rgba(237, 129, 40, 0.89)",
             "rgba(245, 54, 54, 0.9)"
           ],
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "format": "none",
@@ -199,7 +199,7 @@
               "value": "avg"
             }
           ],
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fontSize": "100%",
@@ -256,7 +256,7 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fill": 1,
@@ -340,7 +340,7 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fill": 1,
@@ -436,7 +436,7 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fill": 1,
@@ -519,7 +519,7 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fill": 1,
@@ -602,7 +602,7 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fill": 1,
@@ -697,7 +697,7 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fill": 1,
@@ -781,7 +781,7 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fill": 1,
@@ -865,7 +865,7 @@
           "bars": false,
           "dashLength": 10,
           "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
           "editable": true,
           "error": false,
           "fill": 1,
@@ -958,10 +958,25 @@
   "tags": [],
   "templating": {
     "list": [
+        {
+        "current": {
+          "text": "prometheus",
+          "value": "prometheus"
+        },
+        "hide": 0,
+        "label": "datasource",
+        "name": "datasource",
+        "options": [],
+        "query": "prometheus",
+        "refresh": 1,
+        "regex": "",
+        "skipUrlSync": false,
+        "type": "datasource"
+      },
       {
         "allValue": ".*",
         "current": {},
-        "datasource": "K8S",
+        "datasource": "$datasource",
         "hide": 0,
         "includeAll": true,
         "label": "Instance",
@@ -981,7 +996,7 @@
       {
         "allValue": ".*",
         "current": {},
-        "datasource": "K8S",
+        "datasource": "$datasource",
         "hide": 0,
         "includeAll": true,
         "label": "Call Type",

go.mod

@@ -0,0 +1,50 @@
+module github.com/bloomberg/goldpinger/v3
+
+go 1.14
+
+require (
+	github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
+	github.com/cespare/xxhash v1.1.0
+	github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680 // indirect
+	github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8 // indirect
+	github.com/go-openapi/analysis v0.17.2 // indirect
+	github.com/go-openapi/errors v0.17.2
+	github.com/go-openapi/jsonpointer v0.17.2 // indirect
+	github.com/go-openapi/jsonreference v0.17.2 // indirect
+	github.com/go-openapi/loads v0.17.2
+	github.com/go-openapi/runtime v0.17.2
+	github.com/go-openapi/spec v0.17.2
+	github.com/go-openapi/strfmt v0.17.2
+	github.com/go-openapi/swag v0.17.2
+	github.com/go-openapi/validate v0.17.2
+	github.com/gogo/protobuf v0.0.0-20170330071051-c0656edd0d9e // indirect
+	github.com/golang/glog v0.0.0-20141105023935-44145f04b68c // indirect
+	github.com/google/btree v1.0.0 // indirect
+	github.com/google/gofuzz v0.0.0-20161122191042-44d81051d367 // indirect
+	github.com/googleapis/gnostic v0.0.0-20170729233727-0c5108395e2d // indirect
+	github.com/gregjones/httpcache v0.0.0-20170728041850-787624de3eb7 // indirect
+	github.com/imdario/mergo v0.3.5 // indirect
+	github.com/jessevdk/go-flags v1.4.0
+	github.com/json-iterator/go v0.0.0-20180612202835-f2b4162afba3 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
+	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
+	github.com/prometheus/client_golang v0.9.1
+	github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 // indirect
+	github.com/prometheus/common v0.0.0-20181020173914-7e9e6cabbd39 // indirect
+	github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d // indirect
+	github.com/spf13/pflag v1.0.1 // indirect
+	github.com/stuartnelson3/go-rendezvous v0.2.0
+	go.uber.org/zap v1.14.1
+	golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 // indirect
+	golang.org/x/image v0.0.0-20190220214146-31aff87c08e9
+	golang.org/x/net v0.0.0-20200226121028-0de0cce0169b
+	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d // indirect
+	golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a // indirect
+	golang.org/x/time v0.0.0-20161028155119-f51c12702a4d // indirect
+	gopkg.in/inf.v0 v0.9.0 // indirect
+	k8s.io/api v0.0.0-20181004124137-fd83cbc87e76 // indirect
+	k8s.io/apimachinery v0.0.0-20180913025736-6dd46049f395
+	k8s.io/client-go v9.0.0+incompatible
+)

go.sum

@@ -0,0 +1,189 @@
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/PuerkitoBio/purell v1.1.0 h1:rmGxhojJlM0tuKtfdvliR84CFHljx9ag64t2xmVkjK4=
+github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
+github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
+github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
+github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf h1:eg0MeVzsP1G42dRafH3vf+al2vQIJU0YHX+1Tw87oco=
+github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
+github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/docker/go-units v0.3.3 h1:Xk8S3Xj5sLGlG5g67hJmYMmUgXv5N4PhkjJHHqrwnTk=
+github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
+github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680 h1:ZktWZesgun21uEDrwW7iEV1zPCGQldM2atlJZ3TdvVM=
+github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/globalsign/mgo v0.0.0-20180905125535-1ca0a4f7cbcb/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
+github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8 h1:DujepqpGd1hyOd7aW59XpK7Qymp8iy83xq74fLr21is=
+github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
+github.com/go-openapi/analysis v0.0.0-20180825180245-b006789cd277/go.mod h1:k70tL6pCuVxPJOHXQ+wIac1FUrvNkHolPie/cLEU6hI=
+github.com/go-openapi/analysis v0.17.0/go.mod h1:IowGgpVeD0vNm45So8nr+IcQ3pxVtpRoBWb8PVZO0ik=
+github.com/go-openapi/analysis v0.17.2 h1:eYp14J1o8TTSCzndHBtsNuckikV1PfZOSnx4BcBeu0c=
+github.com/go-openapi/analysis v0.17.2/go.mod h1:IowGgpVeD0vNm45So8nr+IcQ3pxVtpRoBWb8PVZO0ik=
+github.com/go-openapi/errors v0.17.0/go.mod h1:LcZQpmvG4wyF5j4IhA73wkLFQg+QJXOQHVjmcZxhka0=
+github.com/go-openapi/errors v0.17.2 h1:azEQ8Fnx0jmtFF2fxsnmd6I0x6rsweUF63qqSO1NmKk=
+github.com/go-openapi/errors v0.17.2/go.mod h1:LcZQpmvG4wyF5j4IhA73wkLFQg+QJXOQHVjmcZxhka0=
+github.com/go-openapi/jsonpointer v0.17.0/go.mod h1:cOnomiV+CVVwFLk0A/MExoFMjwdsUdVpsRhURCKh+3M=
+github.com/go-openapi/jsonpointer v0.17.2 h1:3ekBy41gar/iJi2KSh/au/PrC2vpLr85upF/UZmm3W0=
+github.com/go-openapi/jsonpointer v0.17.2/go.mod h1:cOnomiV+CVVwFLk0A/MExoFMjwdsUdVpsRhURCKh+3M=
+github.com/go-openapi/jsonreference v0.17.0/go.mod h1:g4xxGn04lDIRh0GJb5QlpE3HfopLOL6uZrK/VgnsK9I=
+github.com/go-openapi/jsonreference v0.17.2 h1:lF3z7AH8dd0IKXc1zEBi1dj0B4XgVb5cVjn39dCK3Ls=
+github.com/go-openapi/jsonreference v0.17.2/go.mod h1:g4xxGn04lDIRh0GJb5QlpE3HfopLOL6uZrK/VgnsK9I=
+github.com/go-openapi/loads v0.17.0/go.mod h1:72tmFy5wsWx89uEVddd0RjRWPZm92WRLhf7AC+0+OOU=
+github.com/go-openapi/loads v0.17.2 h1:tEXYu6Xc0pevpzzQx5ghrMN9F7IVpN/+u4iD3rkYE5o=
+github.com/go-openapi/loads v0.17.2/go.mod h1:72tmFy5wsWx89uEVddd0RjRWPZm92WRLhf7AC+0+OOU=
+github.com/go-openapi/runtime v0.0.0-20180920151709-4f900dc2ade9/go.mod h1:6v9a6LTXWQCdL8k1AO3cvqx5OtZY/Y9wKTgaoP6YRfA=
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+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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+gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/inf.v0 v0.9.0 h1:3zYtXIO92bvsdS3ggAdA8Gb4Azj0YU+TVY1uGYNFA8o=
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+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+k8s.io/api v0.0.0-20181004124137-fd83cbc87e76 h1:cGc6jt7tNK7a2WfgNKjxjoU/UXXr9Q7JTqvCupZ+6+Y=
+k8s.io/api v0.0.0-20181004124137-fd83cbc87e76/go.mod h1:iuAfoD4hCxJ8Onx9kaTIt30j7jUFS00AXQi6QMi99vA=
+k8s.io/apimachinery v0.0.0-20180913025736-6dd46049f395 h1:X+c9tYTDc9Pmt+Z1YSMqmUTCYf13VYe1u+ZwzjgpK0M=
+k8s.io/apimachinery v0.0.0-20180913025736-6dd46049f395/go.mod h1:ccL7Eh7zubPUSh9A3USN90/OzHNSVN6zxzde07TDCL0=
+k8s.io/client-go v9.0.0+incompatible h1:2kqW3X2xQ9SbFvWZjGEHBLlWc1LG9JIJNXWkuqwdZ3A=
+k8s.io/client-go v9.0.0+incompatible/go.mod h1:7vJpHMYJwNQCWgzmNV+VYUl1zCObLyodBc8nIyt8L5s=

pkg/client/goldpinger_client.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package client
@@ -20,12 +6,10 @@ package client
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
+	"github.com/bloomberg/goldpinger/v3/pkg/client/operations"
 	"github.com/go-openapi/runtime"
 	httptransport "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
-
-	"github.com/bloomberg/goldpinger/pkg/client/operations"
+	"github.com/go-openapi/strfmt"
 )
 
 // Default goldpinger HTTP client.
@@ -70,9 +54,7 @@ func New(transport runtime.ClientTransport, formats strfmt.Registry) *Goldpinger
 
 	cli := new(Goldpinger)
 	cli.Transport = transport
-
 	cli.Operations = operations.New(transport, formats)
-
 	return cli
 }
 
@@ -117,7 +99,7 @@ func (cfg *TransportConfig) WithSchemes(schemes []string) *TransportConfig {
 
 // Goldpinger is a client for goldpinger
 type Goldpinger struct {
-	Operations *operations.Client
+	Operations operations.ClientService
 
 	Transport runtime.ClientTransport
 }
@@ -125,7 +107,5 @@ type Goldpinger struct {
 // SetTransport changes the transport on the client and all its subresources
 func (c *Goldpinger) SetTransport(transport runtime.ClientTransport) {
 	c.Transport = transport
-
 	c.Operations.SetTransport(transport)
-
 }

pkg/client/operations/check_all_pods_parameters.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -20,16 +6,14 @@ package operations
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
+	"context"
 	"net/http"
 	"time"
 
-	"golang.org/x/net/context"
-
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	cr "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/strfmt"
 )
 
 // NewCheckAllPodsParams creates a new CheckAllPodsParams object

pkg/client/operations/check_all_pods_responses.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -24,10 +10,9 @@ import (
 	"io"
 
 	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 
-	strfmt "github.com/go-openapi/strfmt"
-
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // CheckAllPodsReader is a Reader for the CheckAllPods structure.
@@ -38,7 +23,6 @@ type CheckAllPodsReader struct {
 // ReadResponse reads a server response into the received o.
 func (o *CheckAllPodsReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
 	switch response.Code() {
-
 	case 200:
 		result := NewCheckAllPodsOK()
 		if err := result.readResponse(response, consumer, o.formats); err != nil {
@@ -68,6 +52,10 @@ func (o *CheckAllPodsOK) Error() string {
 	return fmt.Sprintf("[GET /check_all][%d] checkAllPodsOK  %+v", 200, o.Payload)
 }
 
+func (o *CheckAllPodsOK) GetPayload() *models.CheckAllResults {
+	return o.Payload
+}
+
 func (o *CheckAllPodsOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
 
 	o.Payload = new(models.CheckAllResults)

pkg/client/operations/check_service_pods_parameters.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -20,16 +6,14 @@ package operations
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
+	"context"
 	"net/http"
 	"time"
 
-	"golang.org/x/net/context"
-
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	cr "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/strfmt"
 )
 
 // NewCheckServicePodsParams creates a new CheckServicePodsParams object

pkg/client/operations/check_service_pods_responses.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -24,10 +10,9 @@ import (
 	"io"
 
 	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 
-	strfmt "github.com/go-openapi/strfmt"
-
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // CheckServicePodsReader is a Reader for the CheckServicePods structure.
@@ -38,7 +23,6 @@ type CheckServicePodsReader struct {
 // ReadResponse reads a server response into the received o.
 func (o *CheckServicePodsReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
 	switch response.Code() {
-
 	case 200:
 		result := NewCheckServicePodsOK()
 		if err := result.readResponse(response, consumer, o.formats); err != nil {
@@ -61,17 +45,23 @@ func NewCheckServicePodsOK() *CheckServicePodsOK {
 Success, return response
 */
 type CheckServicePodsOK struct {
-	Payload models.CheckResults
+	Payload *models.CheckResults
 }
 
 func (o *CheckServicePodsOK) Error() string {
 	return fmt.Sprintf("[GET /check][%d] checkServicePodsOK  %+v", 200, o.Payload)
 }
 
+func (o *CheckServicePodsOK) GetPayload() *models.CheckResults {
+	return o.Payload
+}
+
 func (o *CheckServicePodsOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
 
+	o.Payload = new(models.CheckResults)
+
 	// response payload
-	if err := consumer.Consume(response.Body(), &o.Payload); err != nil && err != io.EOF {
+	if err := consumer.Consume(response.Body(), o.Payload); err != nil && err != io.EOF {
 		return err
 	}
 

pkg/client/operations/healthz_parameters.go

@@ -0,0 +1,112 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"context"
+	"net/http"
+	"time"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime"
+	cr "github.com/go-openapi/runtime/client"
+	"github.com/go-openapi/strfmt"
+)
+
+// NewHealthzParams creates a new HealthzParams object
+// with the default values initialized.
+func NewHealthzParams() *HealthzParams {
+
+	return &HealthzParams{
+
+		timeout: cr.DefaultTimeout,
+	}
+}
+
+// NewHealthzParamsWithTimeout creates a new HealthzParams object
+// with the default values initialized, and the ability to set a timeout on a request
+func NewHealthzParamsWithTimeout(timeout time.Duration) *HealthzParams {
+
+	return &HealthzParams{
+
+		timeout: timeout,
+	}
+}
+
+// NewHealthzParamsWithContext creates a new HealthzParams object
+// with the default values initialized, and the ability to set a context for a request
+func NewHealthzParamsWithContext(ctx context.Context) *HealthzParams {
+
+	return &HealthzParams{
+
+		Context: ctx,
+	}
+}
+
+// NewHealthzParamsWithHTTPClient creates a new HealthzParams object
+// with the default values initialized, and the ability to set a custom HTTPClient for a request
+func NewHealthzParamsWithHTTPClient(client *http.Client) *HealthzParams {
+
+	return &HealthzParams{
+		HTTPClient: client,
+	}
+}
+
+/*HealthzParams contains all the parameters to send to the API endpoint
+for the healthz operation typically these are written to a http.Request
+*/
+type HealthzParams struct {
+	timeout    time.Duration
+	Context    context.Context
+	HTTPClient *http.Client
+}
+
+// WithTimeout adds the timeout to the healthz params
+func (o *HealthzParams) WithTimeout(timeout time.Duration) *HealthzParams {
+	o.SetTimeout(timeout)
+	return o
+}
+
+// SetTimeout adds the timeout to the healthz params
+func (o *HealthzParams) SetTimeout(timeout time.Duration) {
+	o.timeout = timeout
+}
+
+// WithContext adds the context to the healthz params
+func (o *HealthzParams) WithContext(ctx context.Context) *HealthzParams {
+	o.SetContext(ctx)
+	return o
+}
+
+// SetContext adds the context to the healthz params
+func (o *HealthzParams) SetContext(ctx context.Context) {
+	o.Context = ctx
+}
+
+// WithHTTPClient adds the HTTPClient to the healthz params
+func (o *HealthzParams) WithHTTPClient(client *http.Client) *HealthzParams {
+	o.SetHTTPClient(client)
+	return o
+}
+
+// SetHTTPClient adds the HTTPClient to the healthz params
+func (o *HealthzParams) SetHTTPClient(client *http.Client) {
+	o.HTTPClient = client
+}
+
+// WriteToRequest writes these params to a swagger request
+func (o *HealthzParams) WriteToRequest(r runtime.ClientRequest, reg strfmt.Registry) error {
+
+	if err := r.SetTimeout(o.timeout); err != nil {
+		return err
+	}
+	var res []error
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}

pkg/client/operations/healthz_responses.go

@@ -0,0 +1,108 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
+
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
+)
+
+// HealthzReader is a Reader for the Healthz structure.
+type HealthzReader struct {
+	formats strfmt.Registry
+}
+
+// ReadResponse reads a server response into the received o.
+func (o *HealthzReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
+	switch response.Code() {
+	case 200:
+		result := NewHealthzOK()
+		if err := result.readResponse(response, consumer, o.formats); err != nil {
+			return nil, err
+		}
+		return result, nil
+	case 503:
+		result := NewHealthzServiceUnavailable()
+		if err := result.readResponse(response, consumer, o.formats); err != nil {
+			return nil, err
+		}
+		return nil, result
+
+	default:
+		return nil, runtime.NewAPIError("unknown error", response, response.Code())
+	}
+}
+
+// NewHealthzOK creates a HealthzOK with default headers values
+func NewHealthzOK() *HealthzOK {
+	return &HealthzOK{}
+}
+
+/*HealthzOK handles this case with default header values.
+
+Health check report
+*/
+type HealthzOK struct {
+	Payload *models.HealthCheckResults
+}
+
+func (o *HealthzOK) Error() string {
+	return fmt.Sprintf("[GET /healthz][%d] healthzOK  %+v", 200, o.Payload)
+}
+
+func (o *HealthzOK) GetPayload() *models.HealthCheckResults {
+	return o.Payload
+}
+
+func (o *HealthzOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
+
+	o.Payload = new(models.HealthCheckResults)
+
+	// response payload
+	if err := consumer.Consume(response.Body(), o.Payload); err != nil && err != io.EOF {
+		return err
+	}
+
+	return nil
+}
+
+// NewHealthzServiceUnavailable creates a HealthzServiceUnavailable with default headers values
+func NewHealthzServiceUnavailable() *HealthzServiceUnavailable {
+	return &HealthzServiceUnavailable{}
+}
+
+/*HealthzServiceUnavailable handles this case with default header values.
+
+Unhealthy service
+*/
+type HealthzServiceUnavailable struct {
+	Payload *models.HealthCheckResults
+}
+
+func (o *HealthzServiceUnavailable) Error() string {
+	return fmt.Sprintf("[GET /healthz][%d] healthzServiceUnavailable  %+v", 503, o.Payload)
+}
+
+func (o *HealthzServiceUnavailable) GetPayload() *models.HealthCheckResults {
+	return o.Payload
+}
+
+func (o *HealthzServiceUnavailable) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
+
+	o.Payload = new(models.HealthCheckResults)
+
+	// response payload
+	if err := consumer.Consume(response.Body(), o.Payload); err != nil && err != io.EOF {
+		return err
+	}
+
+	return nil
+}

pkg/client/operations/operations_client.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -20,13 +6,14 @@ package operations
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	"github.com/go-openapi/runtime"
+	"fmt"
 
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 )
 
 // New creates a new operations API client.
-func New(transport runtime.ClientTransport, formats strfmt.Registry) *Client {
+func New(transport runtime.ClientTransport, formats strfmt.Registry) ClientService {
 	return &Client{transport: transport, formats: formats}
 }
 
@@ -38,8 +25,21 @@ type Client struct {
 	formats   strfmt.Registry
 }
 
+// ClientService is the interface for Client methods
+type ClientService interface {
+	CheckAllPods(params *CheckAllPodsParams) (*CheckAllPodsOK, error)
+
+	CheckServicePods(params *CheckServicePodsParams) (*CheckServicePodsOK, error)
+
+	Healthz(params *HealthzParams) (*HealthzOK, error)
+
+	Ping(params *PingParams) (*PingOK, error)
+
+	SetTransport(transport runtime.ClientTransport)
+}
+
 /*
-CheckAllPods Queries the API server for all other pods in this service, and makes all of them query all of their neighbours, using their pods IPs. Calls their /check endpoint.
+  CheckAllPods Queries the API server for all other pods in this service, and makes all of them query all of their neighbours, using their pods IPs. Calls their /check endpoint.
 */
 func (a *Client) CheckAllPods(params *CheckAllPodsParams) (*CheckAllPodsOK, error) {
 	// TODO: Validate the params before sending
@@ -52,7 +52,7 @@ func (a *Client) CheckAllPods(params *CheckAllPodsParams) (*CheckAllPodsOK, erro
 		Method:             "GET",
 		PathPattern:        "/check_all",
 		ProducesMediaTypes: []string{"application/json"},
-		ConsumesMediaTypes: []string{""},
+		ConsumesMediaTypes: []string{"application/json"},
 		Schemes:            []string{"http"},
 		Params:             params,
 		Reader:             &CheckAllPodsReader{formats: a.formats},
@@ -62,12 +62,18 @@ func (a *Client) CheckAllPods(params *CheckAllPodsParams) (*CheckAllPodsOK, erro
 	if err != nil {
 		return nil, err
 	}
-	return result.(*CheckAllPodsOK), nil
-
+	success, ok := result.(*CheckAllPodsOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for checkAllPods: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
 }
 
 /*
-CheckServicePods Queries the API server for all other pods in this service, and pings them via their pods IPs. Calls their /ping endpoint
+  CheckServicePods Queries the API server for all other pods in this service, and pings them via their pods IPs. Calls their /ping endpoint
 */
 func (a *Client) CheckServicePods(params *CheckServicePodsParams) (*CheckServicePodsOK, error) {
 	// TODO: Validate the params before sending
@@ -80,7 +86,7 @@ func (a *Client) CheckServicePods(params *CheckServicePodsParams) (*CheckService
 		Method:             "GET",
 		PathPattern:        "/check",
 		ProducesMediaTypes: []string{"application/json"},
-		ConsumesMediaTypes: []string{""},
+		ConsumesMediaTypes: []string{"application/json"},
 		Schemes:            []string{"http"},
 		Params:             params,
 		Reader:             &CheckServicePodsReader{formats: a.formats},
@@ -90,12 +96,52 @@ func (a *Client) CheckServicePods(params *CheckServicePodsParams) (*CheckService
 	if err != nil {
 		return nil, err
 	}
-	return result.(*CheckServicePodsOK), nil
-
+	success, ok := result.(*CheckServicePodsOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for checkServicePods: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
 }
 
 /*
-Ping return query stats
+  Healthz The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.
+*/
+func (a *Client) Healthz(params *HealthzParams) (*HealthzOK, error) {
+	// TODO: Validate the params before sending
+	if params == nil {
+		params = NewHealthzParams()
+	}
+
+	result, err := a.transport.Submit(&runtime.ClientOperation{
+		ID:                 "healthz",
+		Method:             "GET",
+		PathPattern:        "/healthz",
+		ProducesMediaTypes: []string{"application/json"},
+		ConsumesMediaTypes: []string{"application/json"},
+		Schemes:            []string{"http"},
+		Params:             params,
+		Reader:             &HealthzReader{formats: a.formats},
+		Context:            params.Context,
+		Client:             params.HTTPClient,
+	})
+	if err != nil {
+		return nil, err
+	}
+	success, ok := result.(*HealthzOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for healthz: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
+}
+
+/*
+  Ping return query stats
 */
 func (a *Client) Ping(params *PingParams) (*PingOK, error) {
 	// TODO: Validate the params before sending
@@ -108,7 +154,7 @@ func (a *Client) Ping(params *PingParams) (*PingOK, error) {
 		Method:             "GET",
 		PathPattern:        "/ping",
 		ProducesMediaTypes: []string{"application/json"},
-		ConsumesMediaTypes: []string{""},
+		ConsumesMediaTypes: []string{"application/json"},
 		Schemes:            []string{"http"},
 		Params:             params,
 		Reader:             &PingReader{formats: a.formats},
@@ -118,8 +164,14 @@ func (a *Client) Ping(params *PingParams) (*PingOK, error) {
 	if err != nil {
 		return nil, err
 	}
-	return result.(*PingOK), nil
-
+	success, ok := result.(*PingOK)
+	if ok {
+		return success, nil
+	}
+	// unexpected success response
+	// safeguard: normally, absent a default response, unknown success responses return an error above: so this is a codegen issue
+	msg := fmt.Sprintf("unexpected success response for ping: API contract not enforced by server. Client expected to get an error, but got: %T", result)
+	panic(msg)
 }
 
 // SetTransport changes the transport on the client

pkg/client/operations/ping_parameters.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -20,16 +6,14 @@ package operations
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
+	"context"
 	"net/http"
 	"time"
 
-	"golang.org/x/net/context"
-
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	cr "github.com/go-openapi/runtime/client"
-
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/strfmt"
 )
 
 // NewPingParams creates a new PingParams object

pkg/client/operations/ping_responses.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -24,10 +10,9 @@ import (
 	"io"
 
 	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
 
-	strfmt "github.com/go-openapi/strfmt"
-
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // PingReader is a Reader for the Ping structure.
@@ -38,7 +23,6 @@ type PingReader struct {
 // ReadResponse reads a server response into the received o.
 func (o *PingReader) ReadResponse(response runtime.ClientResponse, consumer runtime.Consumer) (interface{}, error) {
 	switch response.Code() {
-
 	case 200:
 		result := NewPingOK()
 		if err := result.readResponse(response, consumer, o.formats); err != nil {
@@ -68,6 +52,10 @@ func (o *PingOK) Error() string {
 	return fmt.Sprintf("[GET /ping][%d] pingOK  %+v", 200, o.Payload)
 }
 
+func (o *PingOK) GetPayload() *models.PingResults {
+	return o.Payload
+}
+
 func (o *PingOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {
 
 	o.Payload = new(models.PingResults)

pkg/goldpinger/client.go

@@ -15,31 +15,49 @@
 package goldpinger
 
 import (
+	"context"
+	"errors"
 	"fmt"
+	"net"
 	"sync"
+	"time"
 
-	apiclient "github.com/bloomberg/goldpinger/pkg/client"
-	"github.com/bloomberg/goldpinger/pkg/models"
+	apiclient "github.com/bloomberg/goldpinger/v3/pkg/client"
+	"github.com/bloomberg/goldpinger/v3/pkg/client/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 	httptransport "github.com/go-openapi/runtime/client"
 	"github.com/go-openapi/strfmt"
+	"go.uber.org/zap"
 )
 
 // CheckNeighbours queries the kubernetes API server for all other goldpinger pods
 // then calls Ping() on each one
-func CheckNeighbours() models.CheckResults {
-	return PingAllPods(GetAllPods())
+func CheckNeighbours(ctx context.Context) *models.CheckResults {
+	// Mux to prevent concurrent map address
+	checkResultsMux.Lock()
+	defer checkResultsMux.Unlock()
+
+	final := models.CheckResults{}
+	final.PodResults = make(map[string]models.PodResult)
+	for podName, podResult := range checkResults.PodResults {
+		final.PodResults[podName] = podResult
+	}
+	if len(GoldpingerConfig.DnsHosts) > 0 {
+		final.DNSResults = *checkDNS()
+	}
+	return &final
 }
 
 // CheckNeighboursNeighbours queries the kubernetes API server for all other goldpinger
 // pods then calls Check() on each one
-func CheckNeighboursNeighbours() *models.CheckAllResults {
-	return CheckAllPods(GetAllPods())
+func CheckNeighboursNeighbours(ctx context.Context) *models.CheckAllResults {
+	return CheckAllPods(ctx, SelectPods())
 }
 
 type PingAllPodsResult struct {
+	podName   string
 	podResult models.PodResult
-	hostIPv4  strfmt.IPv4
-	podIP     string
+	deleted   bool
 }
 
 func pickPodHostIP(podIP, hostIP string) string {
@@ -49,64 +67,32 @@ func pickPodHostIP(podIP, hostIP string) string {
 	return podIP
 }
 
-func PingAllPods(pods map[string]string) models.CheckResults {
+func checkDNS() *models.DNSResults {
+	results := models.DNSResults{}
+	for _, host := range GoldpingerConfig.DnsHosts {
 
-	result := models.CheckResults{}
+		var dnsResult models.DNSResult
 
-	ch := make(chan PingAllPodsResult, len(pods))
-	wg := sync.WaitGroup{}
-	wg.Add(len(pods))
-
-	for podIP, hostIP := range pods {
-
-		go func(podIP string, hostIP string) {
-			var channelResult PingAllPodsResult
-
-			CountCall("made", "ping")
-			timer := GetLabeledPeersCallsTimer("ping", hostIP, podIP)
-			resp, err := getClient(pickPodHostIP(podIP, hostIP)).Operations.Ping(nil)
-
-			channelResult.hostIPv4.UnmarshalText([]byte(hostIP))
-			var OK = (err == nil)
-			if OK {
-				channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Response: resp.Payload, StatusCode: 200}
-				timer.ObserveDuration()
-			} else {
-				channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Error: err.Error(), StatusCode: 500}
-				CountError("ping")
-			}
-			channelResult.podIP = podIP
-
-			ch <- channelResult
-			wg.Done()
-		}(podIP, hostIP)
-	}
-	wg.Wait()
-	close(ch)
-
-	counterHealthy, counterUnhealthy := 0.0, 0.0
-
-	for response := range ch {
-		var podIPv4 strfmt.IPv4
-		podIPv4.UnmarshalText([]byte(response.podIP))
-		if *response.podResult.OK {
-			counterHealthy++
-		} else {
-			counterUnhealthy++
+		start := time.Now()
+		_, err := net.LookupIP(host)
+		if err != nil {
+			dnsResult.Error = err.Error()
+			CountDnsError(host)
 		}
-		result[response.podIP] = response.podResult
+		dnsResult.ResponseTimeMs = time.Since(start).Nanoseconds() / int64(time.Millisecond)
+		results[host] = dnsResult
 	}
-	CountHealthyUnhealthyNodes(counterHealthy, counterUnhealthy)
-	return result
+	return &results
 }
 
 type CheckServicePodsResult struct {
+	podName           string
 	checkAllPodResult models.CheckAllPodResult
 	hostIPv4          strfmt.IPv4
-	podIP             string
+	podIPv4           strfmt.IPv4
 }
 
-func CheckAllPods(pods map[string]string) *models.CheckAllResults {
+func CheckAllPods(checkAllCtx context.Context, pods map[string]*GoldpingerPod) *models.CheckAllResults {
 
 	result := models.CheckAllResults{Responses: make(map[string]models.CheckAllPodResult)}
 
@@ -114,59 +100,119 @@ func CheckAllPods(pods map[string]string) *models.CheckAllResults {
 	wg := sync.WaitGroup{}
 	wg.Add(len(pods))
 
-	for podIP, hostIP := range pods {
+	for _, pod := range pods {
 
-		go func(podIP string, hostIP string) {
-			var channelResult CheckServicePodsResult
+		go func(pod *GoldpingerPod) {
 
+			// logger
+			logger := zap.L().With(
+				zap.String("op", "check"),
+				zap.String("name", pod.Name),
+				zap.String("hostIP", pod.HostIP),
+				zap.String("podIP", pod.PodIP),
+			)
+
+			// stats
 			CountCall("made", "check")
-			timer := GetLabeledPeersCallsTimer("check", hostIP, podIP)
-			resp, err := getClient(pickPodHostIP(podIP, hostIP)).Operations.CheckServicePods(nil)
+			timer := GetLabeledPeersCallsTimer("check", pod.HostIP, pod.PodIP)
 
-			channelResult.hostIPv4.UnmarshalText([]byte(hostIP))
-			var OK = (err == nil)
-			if OK {
-				channelResult.checkAllPodResult = models.CheckAllPodResult{
-					OK:       &OK,
-					HostIP:   channelResult.hostIPv4,
-					Response: resp.Payload,
-				}
-				timer.ObserveDuration()
-			} else {
+			// setup
+			var channelResult CheckServicePodsResult
+			channelResult.podName = pod.Name
+			channelResult.hostIPv4.UnmarshalText([]byte(pod.HostIP))
+			channelResult.podIPv4.UnmarshalText([]byte(pod.PodIP))
+			client, err := getClient(pickPodHostIP(pod.PodIP, pod.HostIP))
+			OK := false
+
+			if err != nil {
+				logger.Warn("Couldn't get a client for Check", zap.Error(err))
 				channelResult.checkAllPodResult = models.CheckAllPodResult{
 					OK:     &OK,
+					PodIP:  channelResult.podIPv4,
 					HostIP: channelResult.hostIPv4,
 					Error:  err.Error(),
 				}
 				CountError("checkAll")
+			} else {
+				checkCtx, cancel := context.WithTimeout(
+					checkAllCtx,
+					time.Duration(GoldpingerConfig.CheckTimeoutMs)*time.Millisecond,
+				)
+				defer cancel()
+
+				params := operations.NewCheckServicePodsParamsWithContext(checkCtx)
+				resp, err := client.Operations.CheckServicePods(params)
+				OK = (err == nil)
+				if OK {
+					logger.Debug("Check Ok")
+					channelResult.checkAllPodResult = models.CheckAllPodResult{
+						OK:       &OK,
+						PodIP:    channelResult.podIPv4,
+						HostIP:   channelResult.hostIPv4,
+						Response: resp.Payload,
+					}
+					timer.ObserveDuration()
+				} else {
+					logger.Warn("Check returned error", zap.Error(err))
+					channelResult.checkAllPodResult = models.CheckAllPodResult{
+						OK:     &OK,
+						PodIP:  channelResult.podIPv4,
+						HostIP: channelResult.hostIPv4,
+						Error:  err.Error(),
+					}
+					CountError("checkAll")
+				}
 			}
-			channelResult.podIP = podIP
 
 			ch <- channelResult
 			wg.Done()
-		}(podIP, hostIP)
+		}(pod)
 	}
 	wg.Wait()
 	close(ch)
 
 	for response := range ch {
-		var podIPv4 strfmt.IPv4
-		podIPv4.UnmarshalText([]byte(response.podIP))
-
-		result.Responses[response.podIP] = response.checkAllPodResult
+		result.Responses[response.podName] = response.checkAllPodResult
 		result.Hosts = append(result.Hosts, &models.CheckAllResultsHostsItems0{
-			HostIP: response.hostIPv4,
-			PodIP:  podIPv4,
+			PodName: response.podName,
+			HostIP:  response.hostIPv4,
+			PodIP:   response.podIPv4,
 		})
+		if response.checkAllPodResult.Response != nil &&
+			response.checkAllPodResult.Response.DNSResults != nil {
+			if result.DNSResults == nil {
+				result.DNSResults = make(map[string]models.DNSResults)
+			}
+			for host := range response.checkAllPodResult.Response.DNSResults {
+				if result.DNSResults[host] == nil {
+					result.DNSResults[host] = make(map[string]models.DNSResult)
+				}
+				result.DNSResults[host][response.podName] = response.checkAllPodResult.Response.DNSResults[host]
+			}
+		}
 	}
 	return &result
 }
 
-func getClient(hostIP string) *apiclient.Goldpinger {
+func HealthCheck() *models.HealthCheckResults {
+	ok := true
+	start := time.Now()
+	result := models.HealthCheckResults{
+		OK:          &ok,
+		DurationNs:  time.Since(start).Nanoseconds(),
+		GeneratedAt: strfmt.DateTime(start),
+	}
+	return &result
+}
+
+func getClient(hostIP string) (*apiclient.Goldpinger, error) {
+	if hostIP == "" {
+		return nil, errors.New("Host or pod IP empty, can't make a call")
+	}
 	host := fmt.Sprintf("%s:%d", hostIP, GoldpingerConfig.Port)
 	transport := httptransport.New(host, "", nil)
 	client := apiclient.New(transport, strfmt.Default)
 	apiclient.Default.SetTransport(transport)
 
-	return client
+	return client, nil
 }

pkg/goldpinger/config.go

@@ -23,8 +23,20 @@ var GoldpingerConfig = struct {
 	StaticFilePath   string `long:"static-file-path" description:"Folder for serving static files" env:"STATIC_FILE_PATH"`
 	KubeConfigPath   string `long:"kubeconfig" description:"Path to kubeconfig file" env:"KUBECONFIG"`
 	RefreshInterval  int    `long:"refresh-interval" description:"If > 0, will create a thread and collect stats every n seconds" env:"REFRESH_INTERVAL" default:"30"`
+	JitterFactor     float64 `long:"jitter-factor" description:"The amount of jitter to add while pinging clients" env:"JITTER_FACTOR" default:"0.05"`
 	Hostname         string `long:"hostname" description:"Hostname to use" env:"HOSTNAME"`
+	PodIP            string `long:"pod-ip" description:"Pod IP to use" env:"POD_IP"`
+	PodName          string `long:"pod-name" description:"The name of this pod - used to select --ping-number of pods using rendezvous hashing" env:"POD_NAME"`
+	PingNumber       uint   `long:"ping-number" description:"Number of peers to ping. A value of 0 indicates all peers should be pinged." default:"0" env:"PING_NUMBER"`
 	Port             int    `long:"client-port-override" description:"(for testing) use this port when calling other instances" env:"CLIENT_PORT_OVERRIDE"`
 	UseHostIP        bool   `long:"use-host-ip" description:"When making the calls, use host ip (defaults to pod ip)" env:"USE_HOST_IP"`
+	LabelSelector    string `long:"label-selector" description:"label selector to use to discover goldpinger pods in the cluster" env:"LABEL_SELECTOR" default:"app=goldpinger"`
 	KubernetesClient *kubernetes.Clientset
+
+	DnsHosts []string `long:"host-to-resolve" description:"A host to attempt dns resolve on (space delimited)" env:"HOSTS_TO_RESOLVE" env-delim:" "`
+
+	// Timeouts
+	PingTimeoutMs     int64 `long:"ping-timeout-ms" description:"The timeout in milliseconds for a ping call to other goldpinger pods" env:"PING_TIMEOUT_MS" default:"300"`
+	CheckTimeoutMs    int64 `long:"check-timeout-ms" description:"The timeout in milliseconds for a check call to other goldpinger pods" env:"CHECK_TIMEOUT_MS" default:"1000"`
+	CheckAllTimeoutMs int64 `long:"check-all-timeout-ms" description:"The timeout in milliseconds for a check-all call to other goldpinger pods" env:"CHECK_ALL_TIMEOUT_MS" default:"5000"`
 }{}

pkg/goldpinger/heatmap.go

@@ -0,0 +1,154 @@
+// Copyright 2018 Bloomberg Finance L.P.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file is safe to edit. Once it exists it will not be overwritten
+
+package goldpinger
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"image"
+	"image/color"
+	"image/png"
+	"net/http"
+	"sort"
+	"strconv"
+	"time"
+
+	"go.uber.org/zap"
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/basicfont"
+	"golang.org/x/image/math/fixed"
+)
+
+func addLabel(img *image.RGBA, x, y int, text string) {
+	drawer := &font.Drawer{
+		Dst:  img,
+		Src:  image.NewUniform(color.RGBA{25, 200, 25, 255}),
+		Face: basicfont.Face7x13,
+		Dot:  fixed.Point26_6{fixed.Int26_6(x * 64), fixed.Int26_6(y * 64)},
+	}
+	drawer.DrawString(text)
+}
+
+// Calculates the color of the box to draw based on the latency and tresholds
+// We are aiming at slightly more palatable colors than just moving from 255 green to 255 red,
+// so we will use 25B, and then move from (25R, 200G) to (200R, 25G), so our scale is effectively 350 points
+func getPingBoxColor(latency int64, tresholdLatencies [3]int64) *color.RGBA {
+	var red, green uint8 = 25, 200
+	if latency > tresholdLatencies[2] {
+		red, green = 200, 25
+	} else if latency >= tresholdLatencies[1] {
+		red, green = 200, 200
+		diff := (float32(latency-tresholdLatencies[1]) / float32(tresholdLatencies[2]-tresholdLatencies[1])) * 175
+		green = green - uint8(diff)
+	} else if latency >= tresholdLatencies[0] {
+		red, green = 25, 200
+		diff := (float32(latency-tresholdLatencies[0]) / float32(tresholdLatencies[1]-tresholdLatencies[0])) * 175
+		red = red + uint8(diff)
+	}
+	return &color.RGBA{red, green, 25, 255}
+}
+
+func drawPingBox(img *image.RGBA, _x, _y, size int, color *color.RGBA) {
+	for x := _x; x < _x+size; x++ {
+		for y := _y; y < _y+size; y++ {
+			img.Set(x, y, *color)
+		}
+	}
+}
+
+func getPingBoxCoordinates(col, row, boxSize, padding int) (int, int) {
+	return col * (boxSize + padding), row * (boxSize + padding)
+}
+
+// HeatmapHandler returns a PNG with a heatmap representation
+func HeatmapHandler(w http.ResponseWriter, r *http.Request) {
+
+	// parse the query to set the parameters
+	query := r.URL.Query()
+
+	ctx, cancel := context.WithTimeout(
+		r.Context(),
+		time.Duration(GoldpingerConfig.CheckAllTimeoutMs)*time.Millisecond,
+	)
+	defer cancel()
+
+	// get the results
+	checkResults := CheckAllPods(ctx, GetAllPods())
+
+	// set some sizes
+	numberOfPods := len(checkResults.Responses)
+	legendSize := 200
+	boxSize := 14
+	paddingSize := 1
+	heatmapSize := numberOfPods*(boxSize+paddingSize) + boxSize*2
+	tresholdLatencies := [3]int64{1, 10, 100}
+	for index := range tresholdLatencies {
+		stringValue := query["t"+fmt.Sprintf("%d", index)]
+		if len(stringValue) == 0 {
+			continue
+		}
+		if v, err := strconv.ParseInt(stringValue[0], 0, 64); err == nil && v >= 0 {
+			tresholdLatencies[index] = v
+		}
+	}
+
+	canvas := image.NewRGBA(image.Rect(0, 0, heatmapSize+legendSize, heatmapSize))
+
+	// establish an order and fix the max delay
+	var keys []string
+	for sourceIP := range checkResults.Responses {
+		keys = append(keys, sourceIP)
+	}
+	sort.Strings(keys)
+	order := make(map[string]int)
+	for index, key := range keys {
+		order[key] = index
+	}
+
+	// draw all the boxes
+	for sourceIP, results := range checkResults.Responses {
+		if *results.OK {
+			for destinationIP, response := range results.Response.PodResults {
+				x, y := getPingBoxCoordinates(order[sourceIP], order[destinationIP], boxSize, paddingSize)
+				color := getPingBoxColor(response.ResponseTimeMs, tresholdLatencies)
+				drawPingBox(canvas, boxSize+x, boxSize+y, boxSize, color)
+			}
+		}
+	}
+
+	// draw the legend
+	for index, ip := range keys {
+		// ip
+		addLabel(canvas, heatmapSize, (index+1)*(boxSize+paddingSize)+13, fmt.Sprintf("%d", index)+": "+ip)
+		// rows
+		addLabel(canvas, 0, (index+1)*(boxSize+paddingSize)+13, fmt.Sprintf("%d", index))
+		// columns
+		addLabel(canvas, (index+1)*(boxSize+paddingSize), 13, fmt.Sprintf("%d", index))
+	}
+
+	buffer := new(bytes.Buffer)
+	if err := png.Encode(buffer, canvas); err != nil {
+		zap.L().Error("error encoding png", zap.Error(err))
+	}
+
+	w.Header().Set("Content-Type", "image/png")
+	w.Header().Set("Content-Length", strconv.Itoa(len(buffer.Bytes())))
+	if _, err := w.Write(buffer.Bytes()); err != nil {
+		zap.L().Error("error writing heatmap buffer out", zap.Error(err))
+	}
+}

pkg/goldpinger/k8s.go

@@ -15,25 +15,50 @@
 package goldpinger
 
 import (
-	"log"
+	"io/ioutil"
 
+	"go.uber.org/zap"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
-func GetAllPods() map[string]string {
+// namespace is the namespace for the goldpinger pod
+var namespace = getNamespace()
 
-	timer := GetLabeledKubernetesCallsTimer()
-	pods, err := GoldpingerConfig.KubernetesClient.CoreV1().Pods("").List(metav1.ListOptions{LabelSelector: "app=goldpinger"})
+// GoldpingerPod contains just the basic info needed to ping and keep track of a given goldpinger pod
+type GoldpingerPod struct {
+	Name   string // Name is the name of the pod
+	PodIP  string // PodIP is the IP address of the pod
+	HostIP string // HostIP is the IP address of the host where the pod lives
+}
+
+func getNamespace() string {
+	b, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
 	if err != nil {
-		log.Println("Error getting pods for selector: ", err.Error())
+		zap.L().Warn("Unable to determine namespace", zap.Error(err))
+		return ""
+	}
+	namespace := string(b)
+	return namespace
+}
+
+// GetAllPods returns a mapping from a pod name to a pointer to a GoldpingerPod(s)
+func GetAllPods() map[string]*GoldpingerPod {
+	timer := GetLabeledKubernetesCallsTimer()
+	pods, err := GoldpingerConfig.KubernetesClient.CoreV1().Pods(namespace).List(metav1.ListOptions{LabelSelector: GoldpingerConfig.LabelSelector})
+	if err != nil {
+		zap.L().Error("Error getting pods for selector", zap.String("selector", GoldpingerConfig.LabelSelector), zap.Error(err))
 		CountError("kubernetes_api")
 	} else {
 		timer.ObserveDuration()
 	}
 
-	var podsreturn = make(map[string]string)
+	var podMap = make(map[string]*GoldpingerPod)
 	for _, pod := range pods.Items {
-		podsreturn[pod.Status.PodIP] = pod.Status.HostIP
+		podMap[pod.Name] = &GoldpingerPod{
+			Name:   pod.Name,
+			PodIP:  pod.Status.PodIP,
+			HostIP: pod.Status.HostIP,
+		}
 	}
-	return podsreturn
+	return podMap
 }

pkg/goldpinger/pinger.go

@@ -0,0 +1,176 @@
+// Copyright 2018 Bloomberg Finance L.P.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package goldpinger
+
+import (
+	"context"
+	"time"
+
+	"go.uber.org/zap"
+
+	apiclient "github.com/bloomberg/goldpinger/v3/pkg/client"
+	"github.com/bloomberg/goldpinger/v3/pkg/client/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
+	"github.com/go-openapi/strfmt"
+	"github.com/prometheus/client_golang/prometheus"
+	"k8s.io/apimachinery/pkg/util/wait"
+)
+
+// Pinger contains all the info needed by a goroutine to continuously ping a pod
+type Pinger struct {
+	pod         *GoldpingerPod
+	client      *apiclient.Goldpinger
+	timeout     time.Duration
+	histogram   prometheus.Observer
+	hostIPv4    strfmt.IPv4
+	podIPv4     strfmt.IPv4
+	resultsChan chan<- PingAllPodsResult
+	stopChan    chan struct{}
+	logger      *zap.Logger
+}
+
+// NewPinger constructs and returns a Pinger object responsible for pinging a single
+// goldpinger pod
+func NewPinger(pod *GoldpingerPod, resultsChan chan<- PingAllPodsResult) *Pinger {
+	p := Pinger{
+		pod:         pod,
+		timeout:     time.Duration(GoldpingerConfig.PingTimeoutMs) * time.Millisecond,
+		resultsChan: resultsChan,
+		stopChan:    make(chan struct{}),
+
+		histogram: goldpingerResponseTimePeersHistogram.WithLabelValues(
+			GoldpingerConfig.Hostname,
+			"ping",
+			pod.HostIP,
+			pod.PodIP,
+		),
+
+		logger: zap.L().With(
+			zap.String("op", "pinger"),
+			zap.String("name", pod.Name),
+			zap.String("hostIP", pod.HostIP),
+			zap.String("podIP", pod.PodIP),
+		),
+	}
+
+	// Initialize the host/pod IPv4
+	p.hostIPv4.UnmarshalText([]byte(pod.HostIP))
+	p.podIPv4.UnmarshalText([]byte(pod.PodIP))
+
+	return &p
+}
+
+// getClient returns a client that can be used to ping the given pod
+// On error, it returns a static result
+func (p *Pinger) getClient() (*apiclient.Goldpinger, error) {
+	if p.client != nil {
+		return p.client, nil
+	}
+
+	client, err := getClient(pickPodHostIP(p.pod.PodIP, p.pod.HostIP))
+	if err != nil {
+		p.logger.Warn("Could not get client", zap.Error(err))
+		OK := false
+		p.resultsChan <- PingAllPodsResult{
+			podName: p.pod.Name,
+			podResult: models.PodResult{
+				PingTime:       strfmt.DateTime(time.Now()),
+				PodIP:          p.podIPv4,
+				HostIP:         p.hostIPv4,
+				OK:             &OK,
+				Error:          err.Error(),
+				StatusCode:     500,
+				ResponseTimeMs: 0,
+			},
+		}
+		return nil, err
+	}
+	p.client = client
+	return p.client, nil
+}
+
+// Ping makes a single ping request to the given pod
+func (p *Pinger) Ping() {
+	client, err := p.getClient()
+	if err != nil {
+		return
+	}
+
+	CountCall("made", "ping")
+	start := time.Now()
+
+	ctx, cancel := context.WithTimeout(context.Background(), p.timeout)
+	defer cancel()
+
+	params := operations.NewPingParamsWithContext(ctx)
+	resp, err := client.Operations.Ping(params)
+	responseTime := time.Since(start)
+	responseTimeMs := responseTime.Nanoseconds() / int64(time.Millisecond)
+	p.histogram.Observe(responseTime.Seconds())
+
+	OK := (err == nil)
+	if OK {
+		p.resultsChan <- PingAllPodsResult{
+			podName: p.pod.Name,
+			podResult: models.PodResult{
+				PingTime:       strfmt.DateTime(start),
+				PodIP:          p.podIPv4,
+				HostIP:         p.hostIPv4,
+				OK:             &OK,
+				Response:       resp.Payload,
+				StatusCode:     200,
+				ResponseTimeMs: responseTimeMs,
+			},
+		}
+		p.logger.Debug("Success pinging pod", zap.Duration("responseTime", responseTime))
+	} else {
+		p.resultsChan <- PingAllPodsResult{
+			podName: p.pod.Name,
+			podResult: models.PodResult{
+				PingTime:       strfmt.DateTime(start),
+				PodIP:          p.podIPv4,
+				HostIP:         p.hostIPv4,
+				OK:             &OK,
+				Error:          err.Error(),
+				StatusCode:     504,
+				ResponseTimeMs: responseTimeMs,
+			},
+		}
+		p.logger.Warn("Ping returned error", zap.Duration("responseTime", responseTime), zap.Error(err))
+		CountError("ping")
+	}
+}
+
+// PingContinuously continuously pings the given pod with a delay between
+// `period` and `period + jitterFactor * period`
+func (p *Pinger) PingContinuously(initialWait time.Duration, period time.Duration, jitterFactor float64) {
+	p.logger.Info(
+		"Starting pinger",
+		zap.Duration("period", period),
+		zap.Duration("initialWait", initialWait),
+		zap.Float64("jitterFactor", jitterFactor),
+	)
+
+	timer := time.NewTimer(initialWait)
+
+	select {
+	case <-timer.C:
+		wait.JitterUntil(p.Ping, period, jitterFactor, false, p.stopChan)
+	case <-p.stopChan:
+		// Do nothing
+	}
+	// We are done, send a message on the results channel to delete this
+	p.resultsChan <- PingAllPodsResult{podName: p.pod.Name, deleted: true}
+}

pkg/goldpinger/pod_selecter.go

@@ -0,0 +1,40 @@
+// Copyright 2018 Bloomberg Finance L.P.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package goldpinger
+
+import (
+	"github.com/cespare/xxhash"
+	rendezvous "github.com/stuartnelson3/go-rendezvous"
+)
+
+// SelectPods selects a set of pods from the results of GetAllPods
+// depending on the count according to a rendezvous hash
+func SelectPods() map[string]*GoldpingerPod {
+	allPods := GetAllPods()
+	if GoldpingerConfig.PingNumber <= 0 || int(GoldpingerConfig.PingNumber) >= len(allPods) {
+		return allPods
+	}
+
+	rzv := rendezvous.New([]string{}, rendezvous.Hasher(xxhash.Sum64String))
+	for podName := range allPods {
+		rzv.Add(podName)
+	}
+	matches := rzv.LookupN(GoldpingerConfig.PodName, GoldpingerConfig.PingNumber)
+	toPing := make(map[string]*GoldpingerPod)
+	for _, podName := range matches {
+		toPing[podName] = allPods[podName]
+	}
+	return toPing
+}

pkg/goldpinger/stats.go

@@ -15,12 +15,13 @@
 package goldpinger
 
 import (
-	"log"
+	"context"
 	"time"
 
-	"github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 	"github.com/go-openapi/strfmt"
 	"github.com/prometheus/client_golang/prometheus"
+	"go.uber.org/zap"
 )
 
 var (
@@ -82,6 +83,16 @@ var (
 			"type",
 		},
 	)
+	goldpingerDnsErrorsCounter = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "goldpinger_dns_errors_total",
+			Help: "Statistics of DNS errors per instance",
+		},
+		[]string{
+			"goldpinger_instance",
+			"host",
+		},
+	)
 
 	bootTime = time.Now()
 )
@@ -92,10 +103,11 @@ func init() {
 	prometheus.MustRegister(goldpingerResponseTimePeersHistogram)
 	prometheus.MustRegister(goldpingerResponseTimeKubernetesHistogram)
 	prometheus.MustRegister(goldpingerErrorsCounter)
-	log.Println("Metrics setup - see /metrics")
+	prometheus.MustRegister(goldpingerDnsErrorsCounter)
+	zap.L().Info("Metrics setup - see /metrics")
 }
 
-func GetStats() *models.PingResults {
+func GetStats(ctx context.Context) *models.PingResults {
 	// GetStats no longer populates the received and made calls - use metrics for that instead
 	return &models.PingResults{
 		BootTime: strfmt.DateTime(bootTime),
@@ -131,6 +143,14 @@ func CountError(errorType string) {
 	).Inc()
 }
 
+// counts instances of dns errors
+func CountDnsError(host string) {
+	goldpingerDnsErrorsCounter.WithLabelValues(
+		GoldpingerConfig.Hostname,
+		host,
+	).Inc()
+}
+
 // returns a timer for easy observing of the durations of calls to kubernetes API
 func GetLabeledKubernetesCallsTimer() *prometheus.Timer {
 	return prometheus.NewTimer(

pkg/goldpinger/updater.go

@@ -15,31 +15,179 @@
 package goldpinger
 
 import (
-	"fmt"
-	"log"
+	"sync"
 	"time"
+
+	"go.uber.org/zap"
+
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
-func StartUpdater() {
+// checkResults holds the latest results of checking the pods
+var checkResults = models.CheckResults{PodResults: make(map[string]models.PodResult)}
 
-	if GoldpingerConfig.RefreshInterval <= 0 {
-		log.Println("Not creating updater, period is 0")
+// checkResultsMux controls concurrent access to checkResults
+var checkResultsMux = sync.Mutex{}
+
+// exists checks whether there is an existing pinger for the given pod
+// returns true if:
+// - there is already a pinger with the same name
+// - the pinger has the same podIP
+// - the pinger has the same hostIP
+func exists(existingPods map[string]*GoldpingerPod, new *GoldpingerPod) bool {
+	old, exists := existingPods[new.Name]
+	return exists && (old.PodIP == new.PodIP) && (old.HostIP == new.HostIP)
+}
+
+// updatePingers calls SelectPods() at regular intervals to get a new list of goldpinger pods to ping
+// For each goldpinger pod, it then creates a pinger responsible for pinging it and returning the
+// results on the result channel
+func updatePingers(resultsChan chan<- PingAllPodsResult) {
+	// Important: This is the only goroutine that should have access to
+	// these maps since there is nothing controlling concurrent access
+	pingers := make(map[string]*Pinger)
+	existingPods := make(map[string]*GoldpingerPod)
+	refreshPeriod := time.Duration(GoldpingerConfig.RefreshInterval) * time.Second
+
+	for {
+		// Initialize deletedPods to all existing pods, we will remove
+		// any pods that should still exist from this list after we are done
+		// NOTE: This is *NOT* a copy of existingPods just a new variable name
+		// to make the intention/code clear and cleaner
+		deletedPods := existingPods
+
+		// New pods are brand new and haven't been seen before
+		newPods := make(map[string]*GoldpingerPod)
+
+		latest := SelectPods()
+		for podName, pod := range latest {
+			if exists(existingPods, pod) {
+				// This pod continues to exist in the latest iteration of the update
+				// without any changes
+				// Delete it from the set of pods that we wish to delete
+				delete(deletedPods, podName)
+			} else {
+				// This pod is brand new and has never been seen before
+				// Add it to the list of newPods
+				newPods[podName] = pod
+			}
+		}
+
+		// deletedPods now contains any pods that have either been deleted from the api-server
+		// *OR* weren't selected by our rendezvous hash
+		// *OR* had their host/pod IP changed. Remove those pingers
+		destroyPingers(pingers, deletedPods)
+
+		// Next create pingers for new pods
+		createPingers(pingers, newPods, resultsChan, refreshPeriod)
+
+		// Finally, just set existingPods to the latest and collect garbage
+		existingPods = latest
+		deletedPods = nil
+		newPods = nil
+
+		// Wait the given time before pinging
+		time.Sleep(refreshPeriod)
+	}
+}
+
+// createPingers allocates a new pinger object for each new goldpinger Pod that's been discovered
+// It also:
+//     (a) initializes a result object in checkResults to store info on that pod
+//     (b) starts a new goroutines to continuously ping the given pod.
+//         Each new goroutine waits for a given time before starting the continuous ping
+//         to prevent a thundering herd
+func createPingers(pingers map[string]*Pinger, newPods map[string]*GoldpingerPod, resultsChan chan<- PingAllPodsResult, refreshPeriod time.Duration) {
+	if len(newPods) == 0 {
+		// I have nothing to do
 		return
 	}
-	// start the updater
-	go func() {
-		for {
-			results := PingAllPods(GetAllPods())
-			var troublemakers []string
-			for podIP, value := range results {
-				if *value.OK != true {
-					troublemakers = append(troublemakers, fmt.Sprintf("%s (%s)", podIP, value.HostIP.String()))
-				}
-			}
-			if len(troublemakers) > 0 {
-				log.Println("Updater ran into trouble with these peers: ", troublemakers)
-			}
-			time.Sleep(time.Duration(GoldpingerConfig.RefreshInterval) * time.Second)
-		}
-	}()
+	waitBetweenPods := refreshPeriod / time.Duration(len(newPods))
+
+	zap.L().Info(
+		"Starting pingers for new pods",
+		zap.Int("numNewPods", len(newPods)),
+		zap.Duration("refreshPeriod", refreshPeriod),
+		zap.Duration("waitPeriod", waitBetweenPods),
+		zap.Float64("JitterFactor", GoldpingerConfig.JitterFactor),
+	)
+
+	initialWait := time.Duration(0)
+	for podName, pod := range newPods {
+		pinger := NewPinger(pod, resultsChan)
+		pingers[podName] = pinger
+		go pinger.PingContinuously(initialWait, refreshPeriod, GoldpingerConfig.JitterFactor)
+		initialWait += waitBetweenPods
+	}
+}
+
+// destroyPingers takes a list of deleted pods and then for each pod in the list, it stops
+// the goroutines that continuously pings that pod and then deletes the pod from the list of pingers
+func destroyPingers(pingers map[string]*Pinger, deletedPods map[string]*GoldpingerPod) {
+	for podName, pod := range deletedPods {
+		zap.L().Info(
+			"Deleting pod from pingers",
+			zap.String("name", podName),
+			zap.String("podIP", pod.PodIP),
+			zap.String("hostIP", pod.HostIP),
+		)
+		pinger := pingers[podName]
+
+		// Close the channel to stop pinging
+		close(pinger.stopChan)
+
+		// delete from pingers
+		delete(pingers, podName)
+	}
+}
+
+// updateCounters updates the count of health and unhealthy nodes
+func updateCounters() {
+	checkResultsMux.Lock()
+	defer checkResultsMux.Unlock()
+
+	var counterHealthy float64
+	for _, result := range checkResults.PodResults {
+		if result.OK != nil && *result.OK {
+			counterHealthy++
+		}
+	}
+	CountHealthyUnhealthyNodes(counterHealthy, float64(len(checkResults.PodResults))-counterHealthy)
+}
+
+// collectResults simply reads results from the results channel and saves them in a map
+func collectResults(resultsChan <-chan PingAllPodsResult) {
+	refreshPeriod := time.Duration(GoldpingerConfig.RefreshInterval) * time.Second
+	updateTicker := time.NewTicker(refreshPeriod)
+	for {
+		select {
+		case <-updateTicker.C:
+			// Every time our update ticker ticks, update the count of healthy/unhealthy nodes
+			updateCounters()
+		case response := <-resultsChan:
+			// On getting a ping response, if the pinger is not being deleted,
+			// simply save it for later
+			checkResultsMux.Lock()
+			if response.deleted {
+				delete(checkResults.PodResults, response.podName)
+			} else {
+				checkResults.PodResults[response.podName] = response.podResult
+			}
+			checkResultsMux.Unlock()
+		}
+	}
+}
+
+func StartUpdater() {
+	if GoldpingerConfig.RefreshInterval <= 0 {
+		zap.L().Info("Not creating updater, refresh interval is negative", zap.Int("RefreshInterval", GoldpingerConfig.RefreshInterval))
+		return
+	}
+
+	pods := SelectPods()
+
+	// Create a channel for the results
+	resultsChan := make(chan PingAllPodsResult, len(pods))
+	go updatePingers(resultsChan)
+	go collectResults(resultsChan)
 }

pkg/models/call_stats.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package models
@@ -20,12 +6,12 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
-
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 )
 
 // CallStats call stats
+//
 // swagger:model CallStats
 type CallStats struct {
 

pkg/models/check_all_pod_result.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package models
@@ -20,14 +6,14 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
-
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // CheckAllPodResult check all pod result
+//
 // swagger:model CheckAllPodResult
 type CheckAllPodResult struct {
 
@@ -38,11 +24,15 @@ type CheckAllPodResult struct {
 	// o k
 	OK *bool `json:"OK,omitempty"`
 
+	// pod IP
+	// Format: ipv4
+	PodIP strfmt.IPv4 `json:"PodIP,omitempty"`
+
 	// error
 	Error string `json:"error,omitempty"`
 
 	// response
-	Response CheckResults `json:"response,omitempty"`
+	Response *CheckResults `json:"response,omitempty"`
 
 	// status code
 	StatusCode int32 `json:"status-code,omitempty"`
@@ -56,6 +46,10 @@ func (m *CheckAllPodResult) Validate(formats strfmt.Registry) error {
 		res = append(res, err)
 	}
 
+	if err := m.validatePodIP(formats); err != nil {
+		res = append(res, err)
+	}
+
 	if err := m.validateResponse(formats); err != nil {
 		res = append(res, err)
 	}
@@ -79,17 +73,32 @@ func (m *CheckAllPodResult) validateHostIP(formats strfmt.Registry) error {
 	return nil
 }
 
+func (m *CheckAllPodResult) validatePodIP(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.PodIP) { // not required
+		return nil
+	}
+
+	if err := validate.FormatOf("PodIP", "body", "ipv4", m.PodIP.String(), formats); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func (m *CheckAllPodResult) validateResponse(formats strfmt.Registry) error {
 
 	if swag.IsZero(m.Response) { // not required
 		return nil
 	}
 
-	if err := m.Response.Validate(formats); err != nil {
-		if ve, ok := err.(*errors.Validation); ok {
-			return ve.ValidateName("response")
+	if m.Response != nil {
+		if err := m.Response.Validate(formats); err != nil {
+			if ve, ok := err.(*errors.Validation); ok {
+				return ve.ValidateName("response")
+			}
+			return err
 		}
-		return err
 	}
 
 	return nil

pkg/models/check_all_results.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package models
@@ -22,20 +8,23 @@ package models
 import (
 	"strconv"
 
-	strfmt "github.com/go-openapi/strfmt"
-
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // CheckAllResults check all results
+//
 // swagger:model CheckAllResults
 type CheckAllResults struct {
 
 	// o k
 	OK *bool `json:"OK,omitempty"`
 
+	// dns results
+	DNSResults map[string]DNSResults `json:"dnsResults,omitempty"`
+
 	// hosts
 	Hosts []*CheckAllResultsHostsItems0 `json:"hosts"`
 
@@ -53,6 +42,10 @@ type CheckAllResults struct {
 func (m *CheckAllResults) Validate(formats strfmt.Registry) error {
 	var res []error
 
+	if err := m.validateDNSResults(formats); err != nil {
+		res = append(res, err)
+	}
+
 	if err := m.validateHosts(formats); err != nil {
 		res = append(res, err)
 	}
@@ -67,6 +60,25 @@ func (m *CheckAllResults) Validate(formats strfmt.Registry) error {
 	return nil
 }
 
+func (m *CheckAllResults) validateDNSResults(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.DNSResults) { // not required
+		return nil
+	}
+
+	for k := range m.DNSResults {
+
+		if val, ok := m.DNSResults[k]; ok {
+			if err := val.Validate(formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
 func (m *CheckAllResults) validateHosts(formats strfmt.Registry) error {
 
 	if swag.IsZero(m.Hosts) { // not required
@@ -133,6 +145,7 @@ func (m *CheckAllResults) UnmarshalBinary(b []byte) error {
 }
 
 // CheckAllResultsHostsItems0 check all results hosts items0
+//
 // swagger:model CheckAllResultsHostsItems0
 type CheckAllResultsHostsItems0 struct {
 
@@ -143,6 +156,9 @@ type CheckAllResultsHostsItems0 struct {
 	// pod IP
 	// Format: ipv4
 	PodIP strfmt.IPv4 `json:"podIP,omitempty"`
+
+	// pod name
+	PodName string `json:"podName,omitempty"`
 }
 
 // Validate validates this check all results hosts items0

pkg/models/check_results.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package models
@@ -20,31 +6,34 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
-
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // CheckResults check results
+//
 // swagger:model CheckResults
-type CheckResults map[string]PodResult
+type CheckResults struct {
+
+	// dns results
+	DNSResults DNSResults `json:"dnsResults,omitempty"`
+
+	// pod results
+	PodResults map[string]PodResult `json:"podResults,omitempty"`
+}
 
 // Validate validates this check results
-func (m CheckResults) Validate(formats strfmt.Registry) error {
+func (m *CheckResults) Validate(formats strfmt.Registry) error {
 	var res []error
 
-	for k := range m {
-
-		if err := validate.Required(k, "body", m[k]); err != nil {
-			return err
-		}
-		if val, ok := m[k]; ok {
-			if err := val.Validate(formats); err != nil {
-				return err
-			}
-		}
+	if err := m.validateDNSResults(formats); err != nil {
+		res = append(res, err)
+	}
 
+	if err := m.validatePodResults(formats); err != nil {
+		res = append(res, err)
 	}
 
 	if len(res) > 0 {
@@ -52,3 +41,59 @@ func (m CheckResults) Validate(formats strfmt.Registry) error {
 	}
 	return nil
 }
+
+func (m *CheckResults) validateDNSResults(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.DNSResults) { // not required
+		return nil
+	}
+
+	if err := m.DNSResults.Validate(formats); err != nil {
+		if ve, ok := err.(*errors.Validation); ok {
+			return ve.ValidateName("dnsResults")
+		}
+		return err
+	}
+
+	return nil
+}
+
+func (m *CheckResults) validatePodResults(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.PodResults) { // not required
+		return nil
+	}
+
+	for k := range m.PodResults {
+
+		if err := validate.Required("podResults"+"."+k, "body", m.PodResults[k]); err != nil {
+			return err
+		}
+		if val, ok := m.PodResults[k]; ok {
+			if err := val.Validate(formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
+// MarshalBinary interface implementation
+func (m *CheckResults) MarshalBinary() ([]byte, error) {
+	if m == nil {
+		return nil, nil
+	}
+	return swag.WriteJSON(m)
+}
+
+// UnmarshalBinary interface implementation
+func (m *CheckResults) UnmarshalBinary(b []byte) error {
+	var res CheckResults
+	if err := swag.ReadJSON(b, &res); err != nil {
+		return err
+	}
+	*m = res
+	return nil
+}

pkg/models/dns_result.go

@@ -0,0 +1,46 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
+)
+
+// DNSResult Dns result
+//
+// swagger:model DnsResult
+type DNSResult struct {
+
+	// error
+	Error string `json:"error,omitempty"`
+
+	// response time ms
+	ResponseTimeMs int64 `json:"response-time-ms,omitempty"`
+}
+
+// Validate validates this Dns result
+func (m *DNSResult) Validate(formats strfmt.Registry) error {
+	return nil
+}
+
+// MarshalBinary interface implementation
+func (m *DNSResult) MarshalBinary() ([]byte, error) {
+	if m == nil {
+		return nil, nil
+	}
+	return swag.WriteJSON(m)
+}
+
+// UnmarshalBinary interface implementation
+func (m *DNSResult) UnmarshalBinary(b []byte) error {
+	var res DNSResult
+	if err := swag.ReadJSON(b, &res); err != nil {
+		return err
+	}
+	*m = res
+	return nil
+}

pkg/models/dns_results.go

@@ -0,0 +1,40 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/validate"
+)
+
+// DNSResults Dns results
+//
+// swagger:model DnsResults
+type DNSResults map[string]DNSResult
+
+// Validate validates this Dns results
+func (m DNSResults) Validate(formats strfmt.Registry) error {
+	var res []error
+
+	for k := range m {
+
+		if err := validate.Required(k, "body", m[k]); err != nil {
+			return err
+		}
+		if val, ok := m[k]; ok {
+			if err := val.Validate(formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}

pkg/models/health_check_results.go

@@ -0,0 +1,74 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
+	"github.com/go-openapi/swag"
+	"github.com/go-openapi/validate"
+)
+
+// HealthCheckResults health check results
+//
+// swagger:model HealthCheckResults
+type HealthCheckResults struct {
+
+	// o k
+	OK *bool `json:"OK,omitempty"`
+
+	// duration ns
+	DurationNs int64 `json:"duration-ns,omitempty"`
+
+	// generated at
+	// Format: date-time
+	GeneratedAt strfmt.DateTime `json:"generated-at,omitempty"`
+}
+
+// Validate validates this health check results
+func (m *HealthCheckResults) Validate(formats strfmt.Registry) error {
+	var res []error
+
+	if err := m.validateGeneratedAt(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
+
+func (m *HealthCheckResults) validateGeneratedAt(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.GeneratedAt) { // not required
+		return nil
+	}
+
+	if err := validate.FormatOf("generated-at", "body", "date-time", m.GeneratedAt.String(), formats); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// MarshalBinary interface implementation
+func (m *HealthCheckResults) MarshalBinary() ([]byte, error) {
+	if m == nil {
+		return nil, nil
+	}
+	return swag.WriteJSON(m)
+}
+
+// UnmarshalBinary interface implementation
+func (m *HealthCheckResults) UnmarshalBinary(b []byte) error {
+	var res HealthCheckResults
+	if err := swag.ReadJSON(b, &res); err != nil {
+		return err
+	}
+	*m = res
+	return nil
+}

pkg/models/ping_results.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package models
@@ -20,14 +6,14 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
-
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // PingResults ping results
+//
 // swagger:model PingResults
 type PingResults struct {
 

pkg/models/pod_result.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package models
@@ -20,14 +6,14 @@ package models
 // Editing this file might prove futile when you re-run the swagger generate command
 
 import (
-	strfmt "github.com/go-openapi/strfmt"
-
 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )
 
 // PodResult pod result
+//
 // swagger:model PodResult
 type PodResult struct {
 
@@ -38,12 +24,23 @@ type PodResult struct {
 	// o k
 	OK *bool `json:"OK,omitempty"`
 
+	// ping time
+	// Format: date-time
+	PingTime strfmt.DateTime `json:"PingTime,omitempty"`
+
+	// pod IP
+	// Format: ipv4
+	PodIP strfmt.IPv4 `json:"PodIP,omitempty"`
+
 	// error
 	Error string `json:"error,omitempty"`
 
 	// response
 	Response *PingResults `json:"response,omitempty"`
 
+	// wall clock time in milliseconds
+	ResponseTimeMs int64 `json:"response-time-ms,omitempty"`
+
 	// status code
 	StatusCode int32 `json:"status-code,omitempty"`
 }
@@ -56,6 +53,14 @@ func (m *PodResult) Validate(formats strfmt.Registry) error {
 		res = append(res, err)
 	}
 
+	if err := m.validatePingTime(formats); err != nil {
+		res = append(res, err)
+	}
+
+	if err := m.validatePodIP(formats); err != nil {
+		res = append(res, err)
+	}
+
 	if err := m.validateResponse(formats); err != nil {
 		res = append(res, err)
 	}
@@ -79,6 +84,32 @@ func (m *PodResult) validateHostIP(formats strfmt.Registry) error {
 	return nil
 }
 
+func (m *PodResult) validatePingTime(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.PingTime) { // not required
+		return nil
+	}
+
+	if err := validate.FormatOf("PingTime", "body", "date-time", m.PingTime.String(), formats); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (m *PodResult) validatePodIP(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.PodIP) { // not required
+		return nil
+	}
+
+	if err := validate.FormatOf("PodIP", "body", "ipv4", m.PodIP.String(), formats); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func (m *PodResult) validateResponse(formats strfmt.Registry) error {
 
 	if swag.IsZero(m.Response) { // not required

pkg/restapi/configure_goldpinger.go

@@ -17,18 +17,20 @@
 package restapi
 
 import (
+	"context"
 	"crypto/tls"
-	"log"
 	"net/http"
+	"time"
 
 	"strings"
 
 	"github.com/go-openapi/errors"
 	"github.com/go-openapi/runtime"
 	"github.com/go-openapi/runtime/middleware"
+	"go.uber.org/zap"
 
-	"github.com/bloomberg/goldpinger/pkg/goldpinger"
-	"github.com/bloomberg/goldpinger/pkg/restapi/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/goldpinger"
+	"github.com/bloomberg/goldpinger/v3/pkg/restapi/operations"
 	"github.com/go-openapi/swag"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
@@ -47,6 +49,7 @@ func configureFlags(api *operations.GoldpingerAPI) {
 
 func configureAPI(api *operations.GoldpingerAPI) http.Handler {
 	// configure the api here
+	api.Logger = zap.S().Infof
 	api.ServeError = errors.ServeError
 
 	api.JSONConsumer = runtime.JSONConsumer()
@@ -55,19 +58,51 @@ func configureAPI(api *operations.GoldpingerAPI) http.Handler {
 	api.PingHandler = operations.PingHandlerFunc(
 		func(params operations.PingParams) middleware.Responder {
 			goldpinger.CountCall("received", "ping")
-			return operations.NewPingOK().WithPayload(goldpinger.GetStats())
+
+			ctx, cancel := context.WithTimeout(
+				params.HTTPRequest.Context(),
+				time.Duration(goldpinger.GoldpingerConfig.PingTimeoutMs)*time.Millisecond,
+			)
+			defer cancel()
+
+			return operations.NewPingOK().WithPayload(goldpinger.GetStats(ctx))
 		})
 
 	api.CheckServicePodsHandler = operations.CheckServicePodsHandlerFunc(
 		func(params operations.CheckServicePodsParams) middleware.Responder {
 			goldpinger.CountCall("received", "check")
-			return operations.NewCheckServicePodsOK().WithPayload(goldpinger.CheckNeighbours())
+
+			ctx, cancel := context.WithTimeout(
+				params.HTTPRequest.Context(),
+				time.Duration(goldpinger.GoldpingerConfig.CheckTimeoutMs)*time.Millisecond,
+			)
+			defer cancel()
+
+			return operations.NewCheckServicePodsOK().WithPayload(goldpinger.CheckNeighbours(ctx))
 		})
 
 	api.CheckAllPodsHandler = operations.CheckAllPodsHandlerFunc(
 		func(params operations.CheckAllPodsParams) middleware.Responder {
 			goldpinger.CountCall("received", "check_all")
-			return operations.NewCheckAllPodsOK().WithPayload(goldpinger.CheckNeighboursNeighbours())
+
+			ctx, cancel := context.WithTimeout(
+				params.HTTPRequest.Context(),
+				time.Duration(goldpinger.GoldpingerConfig.CheckAllTimeoutMs)*time.Millisecond,
+			)
+			defer cancel()
+
+			return operations.NewCheckAllPodsOK().WithPayload(goldpinger.CheckNeighboursNeighbours(ctx))
+		})
+
+	api.HealthzHandler = operations.HealthzHandlerFunc(
+		func(params operations.HealthzParams) middleware.Responder {
+			goldpinger.CountCall("received", "healthz")
+			healthResult := goldpinger.HealthCheck()
+			if *healthResult.OK {
+				return operations.NewHealthzOK().WithPayload(healthResult)
+			} else {
+				return operations.NewHealthzServiceUnavailable().WithPayload(healthResult)
+			}
 		})
 
 	api.ServerShutdown = func() {}
@@ -94,11 +129,13 @@ func setupMiddlewares(handler http.Handler) http.Handler {
 }
 
 func fileServerMiddleware(next http.Handler) http.Handler {
-	log.Println("Added the static middleware")
+	zap.L().Info("Added the static middleware")
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		fileServer := http.FileServer(http.Dir(goldpinger.GoldpingerConfig.StaticFilePath))
 		if r.URL.Path == "/" {
 			http.StripPrefix("/", fileServer).ServeHTTP(w, r)
+		} else if r.URL.Path == "/heatmap.png" {
+			goldpinger.HeatmapHandler(w, r)
 		} else if strings.HasPrefix(r.URL.Path, "/static/") {
 			http.StripPrefix("/static/", fileServer).ServeHTTP(w, r)
 		} else {
@@ -109,7 +146,7 @@ func fileServerMiddleware(next http.Handler) http.Handler {
 }
 
 func prometheusMetricsMiddleware(next http.Handler) http.Handler {
-	log.Println("Added the prometheus middleware")
+	zap.L().Info("Added the prometheus middleware")
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path == "/metrics" {
 			http.StripPrefix("/metrics", promhttp.Handler()).ServeHTTP(w, r)

pkg/restapi/doc.go

@@ -1,34 +1,18 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
-/*
-Package restapi Goldpinger
-
-    Schemes:
-      http
-    Host: localhost
-    BasePath: /
-    Version: 1.0.0
-
-    Consumes:
-    - application/json
-
-    Produces:
-    - application/json
-
-swagger:meta
-*/
+// Package restapi Goldpinger
+//
+//  Schemes:
+//    http
+//  Host: localhost
+//  BasePath: /
+//  Version: 3.0.0
+//
+//  Consumes:
+//    - application/json
+//
+//  Produces:
+//    - application/json
+//
+// swagger:meta
 package restapi

pkg/restapi/embedded_spec.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package restapi
@@ -35,7 +21,7 @@ func init() {
   "swagger": "2.0",
   "info": {
     "title": "Goldpinger",
-    "version": "1.0.0"
+    "version": "3.0.0"
   },
   "paths": {
     "/check": {
@@ -72,6 +58,29 @@ func init() {
         }
       }
     },
+    "/healthz": {
+      "get": {
+        "description": "The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.",
+        "produces": [
+          "application/json"
+        ],
+        "operationId": "healthz",
+        "responses": {
+          "200": {
+            "description": "Health check report",
+            "schema": {
+              "$ref": "#/definitions/HealthCheckResults"
+            }
+          },
+          "503": {
+            "description": "Unhealthy service",
+            "schema": {
+              "$ref": "#/definitions/HealthCheckResults"
+            }
+          }
+        }
+      }
+    },
     "/ping": {
       "get": {
         "description": "return query stats",
@@ -115,6 +124,10 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "PodIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
         "error": {
           "type": "string"
         },
@@ -134,6 +147,12 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "dnsResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/DnsResults"
+          }
+        },
         "hosts": {
           "type": "array",
           "items": {
@@ -146,6 +165,9 @@ func init() {
               "podIP": {
                 "type": "string",
                 "format": "ipv4"
+              },
+              "podName": {
+                "type": "string"
               }
             }
           }
@@ -167,9 +189,51 @@ func init() {
       }
     },
     "CheckResults": {
+      "type": "object",
+      "properties": {
+        "dnsResults": {
+          "$ref": "#/definitions/DnsResults"
+        },
+        "podResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/PodResult"
+          }
+        }
+      }
+    },
+    "DnsResult": {
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "response-time-ms": {
+          "type": "number",
+          "format": "int64"
+        }
+      }
+    },
+    "DnsResults": {
       "type": "object",
       "additionalProperties": {
-        "$ref": "#/definitions/PodResult"
+        "$ref": "#/definitions/DnsResult"
+      }
+    },
+    "HealthCheckResults": {
+      "type": "object",
+      "properties": {
+        "OK": {
+          "type": "boolean",
+          "default": false
+        },
+        "duration-ns": {
+          "type": "integer",
+          "format": "int64"
+        },
+        "generated-at": {
+          "type": "string",
+          "format": "date-time"
+        }
       }
     },
     "PingResults": {
@@ -195,12 +259,25 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "PingTime": {
+          "type": "string",
+          "format": "date-time"
+        },
+        "PodIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
         "error": {
           "type": "string"
         },
         "response": {
           "$ref": "#/definitions/PingResults"
         },
+        "response-time-ms": {
+          "description": "wall clock time in milliseconds",
+          "type": "number",
+          "format": "int64"
+        },
         "status-code": {
           "type": "integer",
           "format": "int32"
@@ -213,7 +290,7 @@ func init() {
   "swagger": "2.0",
   "info": {
     "title": "Goldpinger",
-    "version": "1.0.0"
+    "version": "3.0.0"
   },
   "paths": {
     "/check": {
@@ -250,6 +327,29 @@ func init() {
         }
       }
     },
+    "/healthz": {
+      "get": {
+        "description": "The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.",
+        "produces": [
+          "application/json"
+        ],
+        "operationId": "healthz",
+        "responses": {
+          "200": {
+            "description": "Health check report",
+            "schema": {
+              "$ref": "#/definitions/HealthCheckResults"
+            }
+          },
+          "503": {
+            "description": "Unhealthy service",
+            "schema": {
+              "$ref": "#/definitions/HealthCheckResults"
+            }
+          }
+        }
+      }
+    },
     "/ping": {
       "get": {
         "description": "return query stats",
@@ -293,6 +393,10 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "PodIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
         "error": {
           "type": "string"
         },
@@ -312,20 +416,16 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "dnsResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/DnsResults"
+          }
+        },
         "hosts": {
           "type": "array",
           "items": {
-            "type": "object",
-            "properties": {
-              "hostIP": {
-                "type": "string",
-                "format": "ipv4"
-              },
-              "podIP": {
-                "type": "string",
-                "format": "ipv4"
-              }
-            }
+            "$ref": "#/definitions/CheckAllResultsHostsItems0"
           }
         },
         "hosts-healthy": {
@@ -344,10 +444,68 @@ func init() {
         }
       }
     },
+    "CheckAllResultsHostsItems0": {
+      "type": "object",
+      "properties": {
+        "hostIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
+        "podIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
+        "podName": {
+          "type": "string"
+        }
+      }
+    },
     "CheckResults": {
+      "type": "object",
+      "properties": {
+        "dnsResults": {
+          "$ref": "#/definitions/DnsResults"
+        },
+        "podResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/PodResult"
+          }
+        }
+      }
+    },
+    "DnsResult": {
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "response-time-ms": {
+          "type": "number",
+          "format": "int64"
+        }
+      }
+    },
+    "DnsResults": {
       "type": "object",
       "additionalProperties": {
-        "$ref": "#/definitions/PodResult"
+        "$ref": "#/definitions/DnsResult"
+      }
+    },
+    "HealthCheckResults": {
+      "type": "object",
+      "properties": {
+        "OK": {
+          "type": "boolean",
+          "default": false
+        },
+        "duration-ns": {
+          "type": "integer",
+          "format": "int64"
+        },
+        "generated-at": {
+          "type": "string",
+          "format": "date-time"
+        }
       }
     },
     "PingResults": {
@@ -373,12 +531,25 @@ func init() {
           "type": "boolean",
           "default": false
         },
+        "PingTime": {
+          "type": "string",
+          "format": "date-time"
+        },
+        "PodIP": {
+          "type": "string",
+          "format": "ipv4"
+        },
         "error": {
           "type": "string"
         },
         "response": {
           "$ref": "#/definitions/PingResults"
         },
+        "response-time-ms": {
+          "description": "wall clock time in milliseconds",
+          "type": "number",
+          "format": "int64"
+        },
         "status-code": {
           "type": "integer",
           "format": "int32"

pkg/restapi/operations/check_all_pods.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -22,7 +8,7 @@ package operations
 import (
 	"net/http"
 
-	middleware "github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/middleware"
 )
 
 // CheckAllPodsHandlerFunc turns a function with the right signature into a check all pods handler

pkg/restapi/operations/check_all_pods_parameters.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations

pkg/restapi/operations/check_all_pods_responses.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -24,7 +10,7 @@ import (
 
 	"github.com/go-openapi/runtime"
 
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // CheckAllPodsOKCode is the HTTP code returned for type CheckAllPodsOK

pkg/restapi/operations/check_all_pods_urlbuilder.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -47,14 +33,14 @@ func (o *CheckAllPodsURL) SetBasePath(bp string) {
 
 // Build a url path and query string
 func (o *CheckAllPodsURL) Build() (*url.URL, error) {
-	var result url.URL
+	var _result url.URL
 
 	var _path = "/check_all"
 
 	_basePath := o._basePath
-	result.Path = golangswaggerpaths.Join(_basePath, _path)
+	_result.Path = golangswaggerpaths.Join(_basePath, _path)
 
-	return &result, nil
+	return &_result, nil
 }
 
 // Must is a helper function to panic when the url builder returns an error

pkg/restapi/operations/check_service_pods.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -22,7 +8,7 @@ package operations
 import (
 	"net/http"
 
-	middleware "github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/middleware"
 )
 
 // CheckServicePodsHandlerFunc turns a function with the right signature into a check service pods handler

pkg/restapi/operations/check_service_pods_parameters.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations

pkg/restapi/operations/check_service_pods_responses.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -24,7 +10,7 @@ import (
 
 	"github.com/go-openapi/runtime"
 
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // CheckServicePodsOKCode is the HTTP code returned for type CheckServicePodsOK
@@ -39,7 +25,7 @@ type CheckServicePodsOK struct {
 	/*
 	  In: Body
 	*/
-	Payload models.CheckResults `json:"body,omitempty"`
+	Payload *models.CheckResults `json:"body,omitempty"`
 }
 
 // NewCheckServicePodsOK creates CheckServicePodsOK with default headers values
@@ -49,13 +35,13 @@ func NewCheckServicePodsOK() *CheckServicePodsOK {
 }
 
 // WithPayload adds the payload to the check service pods o k response
-func (o *CheckServicePodsOK) WithPayload(payload models.CheckResults) *CheckServicePodsOK {
+func (o *CheckServicePodsOK) WithPayload(payload *models.CheckResults) *CheckServicePodsOK {
 	o.Payload = payload
 	return o
 }
 
 // SetPayload sets the payload to the check service pods o k response
-func (o *CheckServicePodsOK) SetPayload(payload models.CheckResults) {
+func (o *CheckServicePodsOK) SetPayload(payload *models.CheckResults) {
 	o.Payload = payload
 }
 
@@ -63,9 +49,10 @@ func (o *CheckServicePodsOK) SetPayload(payload models.CheckResults) {
 func (o *CheckServicePodsOK) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
 
 	rw.WriteHeader(200)
-	payload := o.Payload
-	if err := producer.Produce(rw, payload); err != nil {
-		panic(err) // let the recovery middleware deal with this
+	if o.Payload != nil {
+		payload := o.Payload
+		if err := producer.Produce(rw, payload); err != nil {
+			panic(err) // let the recovery middleware deal with this
+		}
 	}
-
 }

pkg/restapi/operations/check_service_pods_urlbuilder.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -47,14 +33,14 @@ func (o *CheckServicePodsURL) SetBasePath(bp string) {
 
 // Build a url path and query string
 func (o *CheckServicePodsURL) Build() (*url.URL, error) {
-	var result url.URL
+	var _result url.URL
 
 	var _path = "/check"
 
 	_basePath := o._basePath
-	result.Path = golangswaggerpaths.Join(_basePath, _path)
+	_result.Path = golangswaggerpaths.Join(_basePath, _path)
 
-	return &result, nil
+	return &_result, nil
 }
 
 // Must is a helper function to panic when the url builder returns an error

pkg/restapi/operations/goldpinger_api.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -24,13 +10,13 @@ import (
 	"net/http"
 	"strings"
 
-	errors "github.com/go-openapi/errors"
-	loads "github.com/go-openapi/loads"
-	runtime "github.com/go-openapi/runtime"
-	middleware "github.com/go-openapi/runtime/middleware"
-	security "github.com/go-openapi/runtime/security"
-	spec "github.com/go-openapi/spec"
-	strfmt "github.com/go-openapi/strfmt"
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/loads"
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/security"
+	"github.com/go-openapi/spec"
+	"github.com/go-openapi/strfmt"
 	"github.com/go-openapi/swag"
 )
 
@@ -43,20 +29,27 @@ func NewGoldpingerAPI(spec *loads.Document) *GoldpingerAPI {
 		defaultProduces:     "application/json",
 		customConsumers:     make(map[string]runtime.Consumer),
 		customProducers:     make(map[string]runtime.Producer),
+		PreServerShutdown:   func() {},
 		ServerShutdown:      func() {},
 		spec:                spec,
 		ServeError:          errors.ServeError,
 		BasicAuthenticator:  security.BasicAuth,
 		APIKeyAuthenticator: security.APIKeyAuth,
 		BearerAuthenticator: security.BearerAuth,
-		JSONConsumer:        runtime.JSONConsumer(),
-		JSONProducer:        runtime.JSONProducer(),
+
+		JSONConsumer: runtime.JSONConsumer(),
+
+		JSONProducer: runtime.JSONProducer(),
+
 		CheckAllPodsHandler: CheckAllPodsHandlerFunc(func(params CheckAllPodsParams) middleware.Responder {
 			return middleware.NotImplemented("operation CheckAllPods has not yet been implemented")
 		}),
 		CheckServicePodsHandler: CheckServicePodsHandlerFunc(func(params CheckServicePodsParams) middleware.Responder {
 			return middleware.NotImplemented("operation CheckServicePods has not yet been implemented")
 		}),
+		HealthzHandler: HealthzHandlerFunc(func(params HealthzParams) middleware.Responder {
+			return middleware.NotImplemented("operation Healthz has not yet been implemented")
+		}),
 		PingHandler: PingHandlerFunc(func(params PingParams) middleware.Responder {
 			return middleware.NotImplemented("operation Ping has not yet been implemented")
 		}),
@@ -76,32 +69,39 @@ type GoldpingerAPI struct {
 	Middleware      func(middleware.Builder) http.Handler
 
 	// BasicAuthenticator generates a runtime.Authenticator from the supplied basic auth function.
-	// It has a default implemention in the security package, however you can replace it for your particular usage.
+	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	BasicAuthenticator func(security.UserPassAuthentication) runtime.Authenticator
 	// APIKeyAuthenticator generates a runtime.Authenticator from the supplied token auth function.
-	// It has a default implemention in the security package, however you can replace it for your particular usage.
+	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	APIKeyAuthenticator func(string, string, security.TokenAuthentication) runtime.Authenticator
 	// BearerAuthenticator generates a runtime.Authenticator from the supplied bearer token auth function.
-	// It has a default implemention in the security package, however you can replace it for your particular usage.
+	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	BearerAuthenticator func(string, security.ScopedTokenAuthentication) runtime.Authenticator
 
-	// JSONConsumer registers a consumer for a "application/json" mime type
+	// JSONConsumer registers a consumer for the following mime types:
+	//   - application/json
 	JSONConsumer runtime.Consumer
 
-	// JSONProducer registers a producer for a "application/json" mime type
+	// JSONProducer registers a producer for the following mime types:
+	//   - application/json
 	JSONProducer runtime.Producer
 
 	// CheckAllPodsHandler sets the operation handler for the check all pods operation
 	CheckAllPodsHandler CheckAllPodsHandler
 	// CheckServicePodsHandler sets the operation handler for the check service pods operation
 	CheckServicePodsHandler CheckServicePodsHandler
+	// HealthzHandler sets the operation handler for the healthz operation
+	HealthzHandler HealthzHandler
 	// PingHandler sets the operation handler for the ping operation
 	PingHandler PingHandler
-
 	// ServeError is called when an error is received, there is a default handler
 	// but you can set your own with this
 	ServeError func(http.ResponseWriter, *http.Request, error)
 
+	// PreServerShutdown is called before the HTTP(S) server is shutdown
+	// This allows for custom functions to get executed before the HTTP(S) server stops accepting traffic
+	PreServerShutdown func()
+
 	// ServerShutdown is called when the HTTP(S) server is shut down and done
 	// handling all active connections and does not accept connections any more
 	ServerShutdown func()
@@ -163,11 +163,12 @@ func (o *GoldpingerAPI) Validate() error {
 	if o.CheckAllPodsHandler == nil {
 		unregistered = append(unregistered, "CheckAllPodsHandler")
 	}
-
 	if o.CheckServicePodsHandler == nil {
 		unregistered = append(unregistered, "CheckServicePodsHandler")
 	}
-
+	if o.HealthzHandler == nil {
+		unregistered = append(unregistered, "HealthzHandler")
+	}
 	if o.PingHandler == nil {
 		unregistered = append(unregistered, "PingHandler")
 	}
@@ -186,28 +187,22 @@ func (o *GoldpingerAPI) ServeErrorFor(operationID string) func(http.ResponseWrit
 
 // AuthenticatorsFor gets the authenticators for the specified security schemes
 func (o *GoldpingerAPI) AuthenticatorsFor(schemes map[string]spec.SecurityScheme) map[string]runtime.Authenticator {
-
 	return nil
-
 }
 
 // Authorizer returns the registered authorizer
 func (o *GoldpingerAPI) Authorizer() runtime.Authorizer {
-
 	return nil
-
 }
 
-// ConsumersFor gets the consumers for the specified media types
+// ConsumersFor gets the consumers for the specified media types.
+// MIME type parameters are ignored here.
 func (o *GoldpingerAPI) ConsumersFor(mediaTypes []string) map[string]runtime.Consumer {
-
-	result := make(map[string]runtime.Consumer)
+	result := make(map[string]runtime.Consumer, len(mediaTypes))
 	for _, mt := range mediaTypes {
 		switch mt {
-
 		case "application/json":
 			result["application/json"] = o.JSONConsumer
-
 		}
 
 		if c, ok := o.customConsumers[mt]; ok {
@@ -215,19 +210,16 @@ func (o *GoldpingerAPI) ConsumersFor(mediaTypes []string) map[string]runtime.Con
 		}
 	}
 	return result
-
 }
 
-// ProducersFor gets the producers for the specified media types
+// ProducersFor gets the producers for the specified media types.
+// MIME type parameters are ignored here.
 func (o *GoldpingerAPI) ProducersFor(mediaTypes []string) map[string]runtime.Producer {
-
-	result := make(map[string]runtime.Producer)
+	result := make(map[string]runtime.Producer, len(mediaTypes))
 	for _, mt := range mediaTypes {
 		switch mt {
-
 		case "application/json":
 			result["application/json"] = o.JSONProducer
-
 		}
 
 		if p, ok := o.customProducers[mt]; ok {
@@ -235,7 +227,6 @@ func (o *GoldpingerAPI) ProducersFor(mediaTypes []string) map[string]runtime.Pro
 		}
 	}
 	return result
-
 }
 
 // HandlerFor gets a http.Handler for the provided operation method and path
@@ -265,7 +256,6 @@ func (o *GoldpingerAPI) Context() *middleware.Context {
 
 func (o *GoldpingerAPI) initHandlerCache() {
 	o.Context() // don't care about the result, just that the initialization happened
-
 	if o.handlers == nil {
 		o.handlers = make(map[string]map[string]http.Handler)
 	}
@@ -274,17 +264,18 @@ func (o *GoldpingerAPI) initHandlerCache() {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
 	o.handlers["GET"]["/check_all"] = NewCheckAllPods(o.context, o.CheckAllPodsHandler)
-
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
 	o.handlers["GET"]["/check"] = NewCheckServicePods(o.context, o.CheckServicePodsHandler)
-
+	if o.handlers["GET"] == nil {
+		o.handlers["GET"] = make(map[string]http.Handler)
+	}
+	o.handlers["GET"]["/healthz"] = NewHealthz(o.context, o.HealthzHandler)
 	if o.handlers["GET"] == nil {
 		o.handlers["GET"] = make(map[string]http.Handler)
 	}
 	o.handlers["GET"]["/ping"] = NewPing(o.context, o.PingHandler)
-
 }
 
 // Serve creates a http handler to serve the API over HTTP
@@ -314,3 +305,15 @@ func (o *GoldpingerAPI) RegisterConsumer(mediaType string, consumer runtime.Cons
 func (o *GoldpingerAPI) RegisterProducer(mediaType string, producer runtime.Producer) {
 	o.customProducers[mediaType] = producer
 }
+
+// AddMiddlewareFor adds a http middleware to existing handler
+func (o *GoldpingerAPI) AddMiddlewareFor(method, path string, builder middleware.Builder) {
+	um := strings.ToUpper(method)
+	if path == "/" {
+		path = ""
+	}
+	o.Init()
+	if h, ok := o.handlers[um][path]; ok {
+		o.handlers[method][path] = builder(h)
+	}
+}

pkg/restapi/operations/healthz.go

@@ -0,0 +1,58 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/runtime/middleware"
+)
+
+// HealthzHandlerFunc turns a function with the right signature into a healthz handler
+type HealthzHandlerFunc func(HealthzParams) middleware.Responder
+
+// Handle executing the request and returning a response
+func (fn HealthzHandlerFunc) Handle(params HealthzParams) middleware.Responder {
+	return fn(params)
+}
+
+// HealthzHandler interface for that can handle valid healthz params
+type HealthzHandler interface {
+	Handle(HealthzParams) middleware.Responder
+}
+
+// NewHealthz creates a new http.Handler for the healthz operation
+func NewHealthz(ctx *middleware.Context, handler HealthzHandler) *Healthz {
+	return &Healthz{Context: ctx, Handler: handler}
+}
+
+/*Healthz swagger:route GET /healthz healthz
+
+The healthcheck endpoint provides detailed information about the health of a web service. If each of the components required by the service are healthy, then the service is considered healthy and will return a 200 OK response. If any of the components needed by the service are unhealthy, then a 503 Service Unavailable response will be provided.
+
+*/
+type Healthz struct {
+	Context *middleware.Context
+	Handler HealthzHandler
+}
+
+func (o *Healthz) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	route, rCtx, _ := o.Context.RouteInfo(r)
+	if rCtx != nil {
+		r = rCtx
+	}
+	var Params = NewHealthzParams()
+
+	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
+		o.Context.Respond(rw, r, route.Produces, route, err)
+		return
+	}
+
+	res := o.Handler.Handle(Params) // actually handle the request
+
+	o.Context.Respond(rw, r, route.Produces, route, res)
+
+}

pkg/restapi/operations/healthz_parameters.go

@@ -0,0 +1,45 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/runtime/middleware"
+)
+
+// NewHealthzParams creates a new HealthzParams object
+// no default values defined in spec.
+func NewHealthzParams() HealthzParams {
+
+	return HealthzParams{}
+}
+
+// HealthzParams contains all the bound params for the healthz operation
+// typically these are obtained from a http.Request
+//
+// swagger:parameters healthz
+type HealthzParams struct {
+
+	// HTTP Request Object
+	HTTPRequest *http.Request `json:"-"`
+}
+
+// BindRequest both binds and validates a request, it assumes that complex things implement a Validatable(strfmt.Registry) error interface
+// for simple values it will use straight method calls.
+//
+// To ensure default values, the struct must have been initialized with NewHealthzParams() beforehand.
+func (o *HealthzParams) BindRequest(r *http.Request, route *middleware.MatchedRoute) error {
+	var res []error
+
+	o.HTTPRequest = r
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}

pkg/restapi/operations/healthz_responses.go

@@ -0,0 +1,102 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/runtime"
+
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
+)
+
+// HealthzOKCode is the HTTP code returned for type HealthzOK
+const HealthzOKCode int = 200
+
+/*HealthzOK Health check report
+
+swagger:response healthzOK
+*/
+type HealthzOK struct {
+
+	/*
+	  In: Body
+	*/
+	Payload *models.HealthCheckResults `json:"body,omitempty"`
+}
+
+// NewHealthzOK creates HealthzOK with default headers values
+func NewHealthzOK() *HealthzOK {
+
+	return &HealthzOK{}
+}
+
+// WithPayload adds the payload to the healthz o k response
+func (o *HealthzOK) WithPayload(payload *models.HealthCheckResults) *HealthzOK {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the healthz o k response
+func (o *HealthzOK) SetPayload(payload *models.HealthCheckResults) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *HealthzOK) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
+
+	rw.WriteHeader(200)
+	if o.Payload != nil {
+		payload := o.Payload
+		if err := producer.Produce(rw, payload); err != nil {
+			panic(err) // let the recovery middleware deal with this
+		}
+	}
+}
+
+// HealthzServiceUnavailableCode is the HTTP code returned for type HealthzServiceUnavailable
+const HealthzServiceUnavailableCode int = 503
+
+/*HealthzServiceUnavailable Unhealthy service
+
+swagger:response healthzServiceUnavailable
+*/
+type HealthzServiceUnavailable struct {
+
+	/*
+	  In: Body
+	*/
+	Payload *models.HealthCheckResults `json:"body,omitempty"`
+}
+
+// NewHealthzServiceUnavailable creates HealthzServiceUnavailable with default headers values
+func NewHealthzServiceUnavailable() *HealthzServiceUnavailable {
+
+	return &HealthzServiceUnavailable{}
+}
+
+// WithPayload adds the payload to the healthz service unavailable response
+func (o *HealthzServiceUnavailable) WithPayload(payload *models.HealthCheckResults) *HealthzServiceUnavailable {
+	o.Payload = payload
+	return o
+}
+
+// SetPayload sets the payload to the healthz service unavailable response
+func (o *HealthzServiceUnavailable) SetPayload(payload *models.HealthCheckResults) {
+	o.Payload = payload
+}
+
+// WriteResponse to the client
+func (o *HealthzServiceUnavailable) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {
+
+	rw.WriteHeader(503)
+	if o.Payload != nil {
+		payload := o.Payload
+		if err := producer.Produce(rw, payload); err != nil {
+			panic(err) // let the recovery middleware deal with this
+		}
+	}
+}

pkg/restapi/operations/healthz_urlbuilder.go

@@ -0,0 +1,84 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package operations
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the generate command
+
+import (
+	"errors"
+	"net/url"
+	golangswaggerpaths "path"
+)
+
+// HealthzURL generates an URL for the healthz operation
+type HealthzURL struct {
+	_basePath string
+}
+
+// WithBasePath sets the base path for this url builder, only required when it's different from the
+// base path specified in the swagger spec.
+// When the value of the base path is an empty string
+func (o *HealthzURL) WithBasePath(bp string) *HealthzURL {
+	o.SetBasePath(bp)
+	return o
+}
+
+// SetBasePath sets the base path for this url builder, only required when it's different from the
+// base path specified in the swagger spec.
+// When the value of the base path is an empty string
+func (o *HealthzURL) SetBasePath(bp string) {
+	o._basePath = bp
+}
+
+// Build a url path and query string
+func (o *HealthzURL) Build() (*url.URL, error) {
+	var _result url.URL
+
+	var _path = "/healthz"
+
+	_basePath := o._basePath
+	_result.Path = golangswaggerpaths.Join(_basePath, _path)
+
+	return &_result, nil
+}
+
+// Must is a helper function to panic when the url builder returns an error
+func (o *HealthzURL) Must(u *url.URL, err error) *url.URL {
+	if err != nil {
+		panic(err)
+	}
+	if u == nil {
+		panic("url can't be nil")
+	}
+	return u
+}
+
+// String returns the string representation of the path with query string
+func (o *HealthzURL) String() string {
+	return o.Must(o.Build()).String()
+}
+
+// BuildFull builds a full url with scheme, host, path and query string
+func (o *HealthzURL) BuildFull(scheme, host string) (*url.URL, error) {
+	if scheme == "" {
+		return nil, errors.New("scheme is required for a full url on HealthzURL")
+	}
+	if host == "" {
+		return nil, errors.New("host is required for a full url on HealthzURL")
+	}
+
+	base, err := o.Build()
+	if err != nil {
+		return nil, err
+	}
+
+	base.Scheme = scheme
+	base.Host = host
+	return base, nil
+}
+
+// StringFull returns the string representation of a complete url
+func (o *HealthzURL) StringFull(scheme, host string) string {
+	return o.Must(o.BuildFull(scheme, host)).String()
+}

pkg/restapi/operations/ping.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -22,7 +8,7 @@ package operations
 import (
 	"net/http"
 
-	middleware "github.com/go-openapi/runtime/middleware"
+	"github.com/go-openapi/runtime/middleware"
 )
 
 // PingHandlerFunc turns a function with the right signature into a ping handler

pkg/restapi/operations/ping_parameters.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations

pkg/restapi/operations/ping_responses.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -24,7 +10,7 @@ import (
 
 	"github.com/go-openapi/runtime"
 
-	models "github.com/bloomberg/goldpinger/pkg/models"
+	"github.com/bloomberg/goldpinger/v3/pkg/models"
 )
 
 // PingOKCode is the HTTP code returned for type PingOK

pkg/restapi/operations/ping_urlbuilder.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package operations
@@ -47,14 +33,14 @@ func (o *PingURL) SetBasePath(bp string) {
 
 // Build a url path and query string
 func (o *PingURL) Build() (*url.URL, error) {
-	var result url.URL
+	var _result url.URL
 
 	var _path = "/ping"
 
 	_basePath := o._basePath
-	result.Path = golangswaggerpaths.Join(_basePath, _path)
+	_result.Path = golangswaggerpaths.Join(_basePath, _path)
 
-	return &result, nil
+	return &_result, nil
 }
 
 // Must is a helper function to panic when the url builder returns an error

pkg/restapi/server.go

@@ -1,17 +1,3 @@
-// Copyright 2018 Bloomberg Finance L.P.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
 // Code generated by go-swagger; DO NOT EDIT.
 
 package restapi
@@ -39,7 +25,7 @@ import (
 	flags "github.com/jessevdk/go-flags"
 	"golang.org/x/net/netutil"
 
-	"github.com/bloomberg/goldpinger/pkg/restapi/operations"
+	"github.com/bloomberg/goldpinger/v3/pkg/restapi/operations"
 )
 
 const (
@@ -101,7 +87,7 @@ type Server struct {
 	TLSHost           string         `long:"tls-host" description:"the IP to listen on for tls, when not specified it's the same as --host" env:"TLS_HOST"`
 	TLSPort           int            `long:"tls-port" description:"the port to listen on for secure connections, defaults to a random value" env:"TLS_PORT"`
 	TLSCertificate    flags.Filename `long:"tls-certificate" description:"the certificate to use for secure connections" env:"TLS_CERTIFICATE"`
-	TLSCertificateKey flags.Filename `long:"tls-key" description:"the private key to use for secure conections" env:"TLS_PRIVATE_KEY"`
+	TLSCertificateKey flags.Filename `long:"tls-key" description:"the private key to use for secure connections" env:"TLS_PRIVATE_KEY"`
 	TLSCACertificate  flags.Filename `long:"tls-ca" description:"the certificate authority file to be used with mutual tls auth" env:"TLS_CA_CERTIFICATE"`
 	TLSListenLimit    int            `long:"tls-listen-limit" description:"limit the number of outstanding requests"`
 	TLSKeepAlive      time.Duration  `long:"tls-keep-alive" description:"sets the TCP keep-alive timeouts on accepted connections. It prunes dead TCP connections ( e.g. closing laptop mid-download)"`
@@ -147,7 +133,6 @@ func (s *Server) SetAPI(api *operations.GoldpingerAPI) {
 	}
 
 	s.api = api
-	s.api.Logger = log.Printf
 	s.handler = configureAPI(api)
 }
 
@@ -188,8 +173,6 @@ func (s *Server) Serve() (err error) {
 	go handleInterrupt(once, s)
 
 	servers := []*http.Server{}
-	wg.Add(1)
-	go s.handleShutdown(wg, &servers)
 
 	if s.hasScheme(schemeUnix) {
 		domainSocket := new(http.Server)
@@ -201,6 +184,7 @@ func (s *Server) Serve() (err error) {
 
 		configureServer(domainSocket, "unix", string(s.SocketPath))
 
+		servers = append(servers, domainSocket)
 		wg.Add(1)
 		s.Logf("Serving goldpinger at unix://%s", s.SocketPath)
 		go func(l net.Listener) {
@@ -210,7 +194,6 @@ func (s *Server) Serve() (err error) {
 			}
 			s.Logf("Stopped serving goldpinger at unix://%s", s.SocketPath)
 		}(s.domainSocketL)
-		servers = append(servers, domainSocket)
 	}
 
 	if s.hasScheme(schemeHTTP) {
@@ -231,6 +214,7 @@ func (s *Server) Serve() (err error) {
 
 		configureServer(httpServer, "http", s.httpServerL.Addr().String())
 
+		servers = append(servers, httpServer)
 		wg.Add(1)
 		s.Logf("Serving goldpinger at http://%s", s.httpServerL.Addr())
 		go func(l net.Listener) {
@@ -240,7 +224,6 @@ func (s *Server) Serve() (err error) {
 			}
 			s.Logf("Stopped serving goldpinger at http://%s", l.Addr())
 		}(s.httpServerL)
-		servers = append(servers, httpServer)
 	}
 
 	if s.hasScheme(schemeHTTPS) {
@@ -266,7 +249,7 @@ func (s *Server) Serve() (err error) {
 			// https://github.com/golang/go/tree/master/src/crypto/elliptic
 			CurvePreferences: []tls.CurveID{tls.CurveP256},
 			// Use modern tls mode https://wiki.mozilla.org/Security/Server_Side_TLS#Modern_compatibility
-			NextProtos: []string{"http/1.1", "h2"},
+			NextProtos: []string{"h2", "http/1.1"},
 			// https://www.owasp.org/index.php/Transport_Layer_Protection_Cheat_Sheet#Rule_-_Only_Support_Strong_Protocols
 			MinVersion: tls.VersionTLS12,
 			// These ciphersuites support Forward Secrecy: https://en.wikipedia.org/wiki/Forward_secrecy
@@ -307,7 +290,7 @@ func (s *Server) Serve() (err error) {
 		// call custom TLS configurator
 		configureTLS(httpsServer.TLSConfig)
 
-		if len(httpsServer.TLSConfig.Certificates) == 0 {
+		if len(httpsServer.TLSConfig.Certificates) == 0 && httpsServer.TLSConfig.GetCertificate == nil {
 			// after standard and custom config are passed, this ends up with no certificate
 			if s.TLSCertificate == "" {
 				if s.TLSCertificateKey == "" {
@@ -327,6 +310,7 @@ func (s *Server) Serve() (err error) {
 
 		configureServer(httpsServer, "https", s.httpsServerL.Addr().String())
 
+		servers = append(servers, httpsServer)
 		wg.Add(1)
 		s.Logf("Serving goldpinger at https://%s", s.httpsServerL.Addr())
 		go func(l net.Listener) {
@@ -336,9 +320,11 @@ func (s *Server) Serve() (err error) {
 			}
 			s.Logf("Stopped serving goldpinger at https://%s", l.Addr())
 		}(tls.NewListener(s.httpsServerL, httpsServer.TLSConfig))
-		servers = append(servers, httpsServer)
 	}
 
+	wg.Add(1)
+	go s.handleShutdown(wg, &servers)
+
 	wg.Wait()
 	return nil
 }
@@ -434,6 +420,9 @@ func (s *Server) handleShutdown(wg *sync.WaitGroup, serversPtr *[]*http.Server)
 	ctx, cancel := context.WithTimeout(context.TODO(), s.GracefulTimeout)
 	defer cancel()
 
+	// first execute the pre-shutdown hook
+	s.api.PreServerShutdown()
+
 	shutdownChan := make(chan bool)
 	for i := range servers {
 		server := servers[i]
@@ -503,7 +492,7 @@ func (s *Server) TLSListener() (net.Listener, error) {
 
 func handleInterrupt(once *sync.Once, s *Server) {
 	once.Do(func() {
-		for _ = range s.interrupt {
+		for range s.interrupt {
 			if s.interrupted {
 				s.Logf("Server already shutting down")
 				continue

static/bootstrap/3.3.7/css/bootstrap-theme.css

@@ -0,0 +1,587 @@
+/*!
+ * Bootstrap v3.3.7 (http://getbootstrap.com)
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+.btn-default,
+.btn-primary,
+.btn-success,
+.btn-info,
+.btn-warning,
+.btn-danger {
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, .2);
+  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, .15), 0 1px 1px rgba(0, 0, 0, .075);
+          box-shadow: inset 0 1px 0 rgba(255, 255, 255, .15), 0 1px 1px rgba(0, 0, 0, .075);
+}
+.btn-default:active,
+.btn-primary:active,
+.btn-success:active,
+.btn-info:active,
+.btn-warning:active,
+.btn-danger:active,
+.btn-default.active,
+.btn-primary.active,
+.btn-success.active,
+.btn-info.active,
+.btn-warning.active,
+.btn-danger.active {
+  -webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
+          box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
+}
+.btn-default.disabled,
+.btn-primary.disabled,
+.btn-success.disabled,
+.btn-info.disabled,
+.btn-warning.disabled,
+.btn-danger.disabled,
+.btn-default[disabled],
+.btn-primary[disabled],
+.btn-success[disabled],
+.btn-info[disabled],
+.btn-warning[disabled],
+.btn-danger[disabled],
+fieldset[disabled] .btn-default,
+fieldset[disabled] .btn-primary,
+fieldset[disabled] .btn-success,
+fieldset[disabled] .btn-info,
+fieldset[disabled] .btn-warning,
+fieldset[disabled] .btn-danger {
+  -webkit-box-shadow: none;
+          box-shadow: none;
+}
+.btn-default .badge,
+.btn-primary .badge,
+.btn-success .badge,
+.btn-info .badge,
+.btn-warning .badge,
+.btn-danger .badge {
+  text-shadow: none;
+}
+.btn:active,
+.btn.active {
+  background-image: none;
+}
+.btn-default {
+  text-shadow: 0 1px 0 #fff;
+  background-image: -webkit-linear-gradient(top, #fff 0%, #e0e0e0 100%);
+  background-image:      -o-linear-gradient(top, #fff 0%, #e0e0e0 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#e0e0e0));
+  background-image:         linear-gradient(to bottom, #fff 0%, #e0e0e0 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff', endColorstr='#ffe0e0e0', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  background-repeat: repeat-x;
+  border-color: #dbdbdb;
+  border-color: #ccc;
+}
+.btn-default:hover,
+.btn-default:focus {
+  background-color: #e0e0e0;
+  background-position: 0 -15px;
+}
+.btn-default:active,
+.btn-default.active {
+  background-color: #e0e0e0;
+  border-color: #dbdbdb;
+}
+.btn-default.disabled,
+.btn-default[disabled],
+fieldset[disabled] .btn-default,
+.btn-default.disabled:hover,
+.btn-default[disabled]:hover,
+fieldset[disabled] .btn-default:hover,
+.btn-default.disabled:focus,
+.btn-default[disabled]:focus,
+fieldset[disabled] .btn-default:focus,
+.btn-default.disabled.focus,
+.btn-default[disabled].focus,
+fieldset[disabled] .btn-default.focus,
+.btn-default.disabled:active,
+.btn-default[disabled]:active,
+fieldset[disabled] .btn-default:active,
+.btn-default.disabled.active,
+.btn-default[disabled].active,
+fieldset[disabled] .btn-default.active {
+  background-color: #e0e0e0;
+  background-image: none;
+}
+.btn-primary {
+  background-image: -webkit-linear-gradient(top, #337ab7 0%, #265a88 100%);
+  background-image:      -o-linear-gradient(top, #337ab7 0%, #265a88 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#337ab7), to(#265a88));
+  background-image:         linear-gradient(to bottom, #337ab7 0%, #265a88 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff337ab7', endColorstr='#ff265a88', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  background-repeat: repeat-x;
+  border-color: #245580;
+}
+.btn-primary:hover,
+.btn-primary:focus {
+  background-color: #265a88;
+  background-position: 0 -15px;
+}
+.btn-primary:active,
+.btn-primary.active {
+  background-color: #265a88;
+  border-color: #245580;
+}
+.btn-primary.disabled,
+.btn-primary[disabled],
+fieldset[disabled] .btn-primary,
+.btn-primary.disabled:hover,
+.btn-primary[disabled]:hover,
+fieldset[disabled] .btn-primary:hover,
+.btn-primary.disabled:focus,
+.btn-primary[disabled]:focus,
+fieldset[disabled] .btn-primary:focus,
+.btn-primary.disabled.focus,
+.btn-primary[disabled].focus,
+fieldset[disabled] .btn-primary.focus,
+.btn-primary.disabled:active,
+.btn-primary[disabled]:active,
+fieldset[disabled] .btn-primary:active,
+.btn-primary.disabled.active,
+.btn-primary[disabled].active,
+fieldset[disabled] .btn-primary.active {
+  background-color: #265a88;
+  background-image: none;
+}
+.btn-success {
+  background-image: -webkit-linear-gradient(top, #5cb85c 0%, #419641 100%);
+  background-image:      -o-linear-gradient(top, #5cb85c 0%, #419641 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#5cb85c), to(#419641));
+  background-image:         linear-gradient(to bottom, #5cb85c 0%, #419641 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5cb85c', endColorstr='#ff419641', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  background-repeat: repeat-x;
+  border-color: #3e8f3e;
+}
+.btn-success:hover,
+.btn-success:focus {
+  background-color: #419641;
+  background-position: 0 -15px;
+}
+.btn-success:active,
+.btn-success.active {
+  background-color: #419641;
+  border-color: #3e8f3e;
+}
+.btn-success.disabled,
+.btn-success[disabled],
+fieldset[disabled] .btn-success,
+.btn-success.disabled:hover,
+.btn-success[disabled]:hover,
+fieldset[disabled] .btn-success:hover,
+.btn-success.disabled:focus,
+.btn-success[disabled]:focus,
+fieldset[disabled] .btn-success:focus,
+.btn-success.disabled.focus,
+.btn-success[disabled].focus,
+fieldset[disabled] .btn-success.focus,
+.btn-success.disabled:active,
+.btn-success[disabled]:active,
+fieldset[disabled] .btn-success:active,
+.btn-success.disabled.active,
+.btn-success[disabled].active,
+fieldset[disabled] .btn-success.active {
+  background-color: #419641;
+  background-image: none;
+}
+.btn-info {
+  background-image: -webkit-linear-gradient(top, #5bc0de 0%, #2aabd2 100%);
+  background-image:      -o-linear-gradient(top, #5bc0de 0%, #2aabd2 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#5bc0de), to(#2aabd2));
+  background-image:         linear-gradient(to bottom, #5bc0de 0%, #2aabd2 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5bc0de', endColorstr='#ff2aabd2', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  background-repeat: repeat-x;
+  border-color: #28a4c9;
+}
+.btn-info:hover,
+.btn-info:focus {
+  background-color: #2aabd2;
+  background-position: 0 -15px;
+}
+.btn-info:active,
+.btn-info.active {
+  background-color: #2aabd2;
+  border-color: #28a4c9;
+}
+.btn-info.disabled,
+.btn-info[disabled],
+fieldset[disabled] .btn-info,
+.btn-info.disabled:hover,
+.btn-info[disabled]:hover,
+fieldset[disabled] .btn-info:hover,
+.btn-info.disabled:focus,
+.btn-info[disabled]:focus,
+fieldset[disabled] .btn-info:focus,
+.btn-info.disabled.focus,
+.btn-info[disabled].focus,
+fieldset[disabled] .btn-info.focus,
+.btn-info.disabled:active,
+.btn-info[disabled]:active,
+fieldset[disabled] .btn-info:active,
+.btn-info.disabled.active,
+.btn-info[disabled].active,
+fieldset[disabled] .btn-info.active {
+  background-color: #2aabd2;
+  background-image: none;
+}
+.btn-warning {
+  background-image: -webkit-linear-gradient(top, #f0ad4e 0%, #eb9316 100%);
+  background-image:      -o-linear-gradient(top, #f0ad4e 0%, #eb9316 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#f0ad4e), to(#eb9316));
+  background-image:         linear-gradient(to bottom, #f0ad4e 0%, #eb9316 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff0ad4e', endColorstr='#ffeb9316', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  background-repeat: repeat-x;
+  border-color: #e38d13;
+}
+.btn-warning:hover,
+.btn-warning:focus {
+  background-color: #eb9316;
+  background-position: 0 -15px;
+}
+.btn-warning:active,
+.btn-warning.active {
+  background-color: #eb9316;
+  border-color: #e38d13;
+}
+.btn-warning.disabled,
+.btn-warning[disabled],
+fieldset[disabled] .btn-warning,
+.btn-warning.disabled:hover,
+.btn-warning[disabled]:hover,
+fieldset[disabled] .btn-warning:hover,
+.btn-warning.disabled:focus,
+.btn-warning[disabled]:focus,
+fieldset[disabled] .btn-warning:focus,
+.btn-warning.disabled.focus,
+.btn-warning[disabled].focus,
+fieldset[disabled] .btn-warning.focus,
+.btn-warning.disabled:active,
+.btn-warning[disabled]:active,
+fieldset[disabled] .btn-warning:active,
+.btn-warning.disabled.active,
+.btn-warning[disabled].active,
+fieldset[disabled] .btn-warning.active {
+  background-color: #eb9316;
+  background-image: none;
+}
+.btn-danger {
+  background-image: -webkit-linear-gradient(top, #d9534f 0%, #c12e2a 100%);
+  background-image:      -o-linear-gradient(top, #d9534f 0%, #c12e2a 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#d9534f), to(#c12e2a));
+  background-image:         linear-gradient(to bottom, #d9534f 0%, #c12e2a 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffd9534f', endColorstr='#ffc12e2a', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  background-repeat: repeat-x;
+  border-color: #b92c28;
+}
+.btn-danger:hover,
+.btn-danger:focus {
+  background-color: #c12e2a;
+  background-position: 0 -15px;
+}
+.btn-danger:active,
+.btn-danger.active {
+  background-color: #c12e2a;
+  border-color: #b92c28;
+}
+.btn-danger.disabled,
+.btn-danger[disabled],
+fieldset[disabled] .btn-danger,
+.btn-danger.disabled:hover,
+.btn-danger[disabled]:hover,
+fieldset[disabled] .btn-danger:hover,
+.btn-danger.disabled:focus,
+.btn-danger[disabled]:focus,
+fieldset[disabled] .btn-danger:focus,
+.btn-danger.disabled.focus,
+.btn-danger[disabled].focus,
+fieldset[disabled] .btn-danger.focus,
+.btn-danger.disabled:active,
+.btn-danger[disabled]:active,
+fieldset[disabled] .btn-danger:active,
+.btn-danger.disabled.active,
+.btn-danger[disabled].active,
+fieldset[disabled] .btn-danger.active {
+  background-color: #c12e2a;
+  background-image: none;
+}
+.thumbnail,
+.img-thumbnail {
+  -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, .075);
+          box-shadow: 0 1px 2px rgba(0, 0, 0, .075);
+}
+.dropdown-menu > li > a:hover,
+.dropdown-menu > li > a:focus {
+  background-color: #e8e8e8;
+  background-image: -webkit-linear-gradient(top, #f5f5f5 0%, #e8e8e8 100%);
+  background-image:      -o-linear-gradient(top, #f5f5f5 0%, #e8e8e8 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#f5f5f5), to(#e8e8e8));
+  background-image:         linear-gradient(to bottom, #f5f5f5 0%, #e8e8e8 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff5f5f5', endColorstr='#ffe8e8e8', GradientType=0);
+  background-repeat: repeat-x;
+}
+.dropdown-menu > .active > a,
+.dropdown-menu > .active > a:hover,
+.dropdown-menu > .active > a:focus {
+  background-color: #2e6da4;
+  background-image: -webkit-linear-gradient(top, #337ab7 0%, #2e6da4 100%);
+  background-image:      -o-linear-gradient(top, #337ab7 0%, #2e6da4 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#337ab7), to(#2e6da4));
+  background-image:         linear-gradient(to bottom, #337ab7 0%, #2e6da4 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff337ab7', endColorstr='#ff2e6da4', GradientType=0);
+  background-repeat: repeat-x;
+}
+.navbar-default {
+  background-image: -webkit-linear-gradient(top, #fff 0%, #f8f8f8 100%);
+  background-image:      -o-linear-gradient(top, #fff 0%, #f8f8f8 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#f8f8f8));
+  background-image:         linear-gradient(to bottom, #fff 0%, #f8f8f8 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff', endColorstr='#fff8f8f8', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  background-repeat: repeat-x;
+  border-radius: 4px;
+  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, .15), 0 1px 5px rgba(0, 0, 0, .075);
+          box-shadow: inset 0 1px 0 rgba(255, 255, 255, .15), 0 1px 5px rgba(0, 0, 0, .075);
+}
+.navbar-default .navbar-nav > .open > a,
+.navbar-default .navbar-nav > .active > a {
+  background-image: -webkit-linear-gradient(top, #dbdbdb 0%, #e2e2e2 100%);
+  background-image:      -o-linear-gradient(top, #dbdbdb 0%, #e2e2e2 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#dbdbdb), to(#e2e2e2));
+  background-image:         linear-gradient(to bottom, #dbdbdb 0%, #e2e2e2 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffdbdbdb', endColorstr='#ffe2e2e2', GradientType=0);
+  background-repeat: repeat-x;
+  -webkit-box-shadow: inset 0 3px 9px rgba(0, 0, 0, .075);
+          box-shadow: inset 0 3px 9px rgba(0, 0, 0, .075);
+}
+.navbar-brand,
+.navbar-nav > li > a {
+  text-shadow: 0 1px 0 rgba(255, 255, 255, .25);
+}
+.navbar-inverse {
+  background-image: -webkit-linear-gradient(top, #3c3c3c 0%, #222 100%);
+  background-image:      -o-linear-gradient(top, #3c3c3c 0%, #222 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#3c3c3c), to(#222));
+  background-image:         linear-gradient(to bottom, #3c3c3c 0%, #222 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff3c3c3c', endColorstr='#ff222222', GradientType=0);
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  background-repeat: repeat-x;
+  border-radius: 4px;
+}
+.navbar-inverse .navbar-nav > .open > a,
+.navbar-inverse .navbar-nav > .active > a {
+  background-image: -webkit-linear-gradient(top, #080808 0%, #0f0f0f 100%);
+  background-image:      -o-linear-gradient(top, #080808 0%, #0f0f0f 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#080808), to(#0f0f0f));
+  background-image:         linear-gradient(to bottom, #080808 0%, #0f0f0f 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff080808', endColorstr='#ff0f0f0f', GradientType=0);
+  background-repeat: repeat-x;
+  -webkit-box-shadow: inset 0 3px 9px rgba(0, 0, 0, .25);
+          box-shadow: inset 0 3px 9px rgba(0, 0, 0, .25);
+}
+.navbar-inverse .navbar-brand,
+.navbar-inverse .navbar-nav > li > a {
+  text-shadow: 0 -1px 0 rgba(0, 0, 0, .25);
+}
+.navbar-static-top,
+.navbar-fixed-top,
+.navbar-fixed-bottom {
+  border-radius: 0;
+}
+@media (max-width: 767px) {
+  .navbar .navbar-nav .open .dropdown-menu > .active > a,
+  .navbar .navbar-nav .open .dropdown-menu > .active > a:hover,
+  .navbar .navbar-nav .open .dropdown-menu > .active > a:focus {
+    color: #fff;
+    background-image: -webkit-linear-gradient(top, #337ab7 0%, #2e6da4 100%);
+    background-image:      -o-linear-gradient(top, #337ab7 0%, #2e6da4 100%);
+    background-image: -webkit-gradient(linear, left top, left bottom, from(#337ab7), to(#2e6da4));
+    background-image:         linear-gradient(to bottom, #337ab7 0%, #2e6da4 100%);
+    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff337ab7', endColorstr='#ff2e6da4', GradientType=0);
+    background-repeat: repeat-x;
+  }
+}
+.alert {
+  text-shadow: 0 1px 0 rgba(255, 255, 255, .2);
+  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, .25), 0 1px 2px rgba(0, 0, 0, .05);
+          box-shadow: inset 0 1px 0 rgba(255, 255, 255, .25), 0 1px 2px rgba(0, 0, 0, .05);
+}
+.alert-success {
+  background-image: -webkit-linear-gradient(top, #dff0d8 0%, #c8e5bc 100%);
+  background-image:      -o-linear-gradient(top, #dff0d8 0%, #c8e5bc 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#dff0d8), to(#c8e5bc));
+  background-image:         linear-gradient(to bottom, #dff0d8 0%, #c8e5bc 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffdff0d8', endColorstr='#ffc8e5bc', GradientType=0);
+  background-repeat: repeat-x;
+  border-color: #b2dba1;
+}
+.alert-info {
+  background-image: -webkit-linear-gradient(top, #d9edf7 0%, #b9def0 100%);
+  background-image:      -o-linear-gradient(top, #d9edf7 0%, #b9def0 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#d9edf7), to(#b9def0));
+  background-image:         linear-gradient(to bottom, #d9edf7 0%, #b9def0 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffd9edf7', endColorstr='#ffb9def0', GradientType=0);
+  background-repeat: repeat-x;
+  border-color: #9acfea;
+}
+.alert-warning {
+  background-image: -webkit-linear-gradient(top, #fcf8e3 0%, #f8efc0 100%);
+  background-image:      -o-linear-gradient(top, #fcf8e3 0%, #f8efc0 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#fcf8e3), to(#f8efc0));
+  background-image:         linear-gradient(to bottom, #fcf8e3 0%, #f8efc0 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fffcf8e3', endColorstr='#fff8efc0', GradientType=0);
+  background-repeat: repeat-x;
+  border-color: #f5e79e;
+}
+.alert-danger {
+  background-image: -webkit-linear-gradient(top, #f2dede 0%, #e7c3c3 100%);
+  background-image:      -o-linear-gradient(top, #f2dede 0%, #e7c3c3 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#f2dede), to(#e7c3c3));
+  background-image:         linear-gradient(to bottom, #f2dede 0%, #e7c3c3 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff2dede', endColorstr='#ffe7c3c3', GradientType=0);
+  background-repeat: repeat-x;
+  border-color: #dca7a7;
+}
+.progress {
+  background-image: -webkit-linear-gradient(top, #ebebeb 0%, #f5f5f5 100%);
+  background-image:      -o-linear-gradient(top, #ebebeb 0%, #f5f5f5 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#ebebeb), to(#f5f5f5));
+  background-image:         linear-gradient(to bottom, #ebebeb 0%, #f5f5f5 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffebebeb', endColorstr='#fff5f5f5', GradientType=0);
+  background-repeat: repeat-x;
+}
+.progress-bar {
+  background-image: -webkit-linear-gradient(top, #337ab7 0%, #286090 100%);
+  background-image:      -o-linear-gradient(top, #337ab7 0%, #286090 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#337ab7), to(#286090));
+  background-image:         linear-gradient(to bottom, #337ab7 0%, #286090 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff337ab7', endColorstr='#ff286090', GradientType=0);
+  background-repeat: repeat-x;
+}
+.progress-bar-success {
+  background-image: -webkit-linear-gradient(top, #5cb85c 0%, #449d44 100%);
+  background-image:      -o-linear-gradient(top, #5cb85c 0%, #449d44 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#5cb85c), to(#449d44));
+  background-image:         linear-gradient(to bottom, #5cb85c 0%, #449d44 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5cb85c', endColorstr='#ff449d44', GradientType=0);
+  background-repeat: repeat-x;
+}
+.progress-bar-info {
+  background-image: -webkit-linear-gradient(top, #5bc0de 0%, #31b0d5 100%);
+  background-image:      -o-linear-gradient(top, #5bc0de 0%, #31b0d5 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#5bc0de), to(#31b0d5));
+  background-image:         linear-gradient(to bottom, #5bc0de 0%, #31b0d5 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5bc0de', endColorstr='#ff31b0d5', GradientType=0);
+  background-repeat: repeat-x;
+}
+.progress-bar-warning {
+  background-image: -webkit-linear-gradient(top, #f0ad4e 0%, #ec971f 100%);
+  background-image:      -o-linear-gradient(top, #f0ad4e 0%, #ec971f 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#f0ad4e), to(#ec971f));
+  background-image:         linear-gradient(to bottom, #f0ad4e 0%, #ec971f 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff0ad4e', endColorstr='#ffec971f', GradientType=0);
+  background-repeat: repeat-x;
+}
+.progress-bar-danger {
+  background-image: -webkit-linear-gradient(top, #d9534f 0%, #c9302c 100%);
+  background-image:      -o-linear-gradient(top, #d9534f 0%, #c9302c 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#d9534f), to(#c9302c));
+  background-image:         linear-gradient(to bottom, #d9534f 0%, #c9302c 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffd9534f', endColorstr='#ffc9302c', GradientType=0);
+  background-repeat: repeat-x;
+}
+.progress-bar-striped {
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:      -o-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:         linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+}
+.list-group {
+  border-radius: 4px;
+  -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, .075);
+          box-shadow: 0 1px 2px rgba(0, 0, 0, .075);
+}
+.list-group-item.active,
+.list-group-item.active:hover,
+.list-group-item.active:focus {
+  text-shadow: 0 -1px 0 #286090;
+  background-image: -webkit-linear-gradient(top, #337ab7 0%, #2b669a 100%);
+  background-image:      -o-linear-gradient(top, #337ab7 0%, #2b669a 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#337ab7), to(#2b669a));
+  background-image:         linear-gradient(to bottom, #337ab7 0%, #2b669a 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff337ab7', endColorstr='#ff2b669a', GradientType=0);
+  background-repeat: repeat-x;
+  border-color: #2b669a;
+}
+.list-group-item.active .badge,
+.list-group-item.active:hover .badge,
+.list-group-item.active:focus .badge {
+  text-shadow: none;
+}
+.panel {
+  -webkit-box-shadow: 0 1px 2px rgba(0, 0, 0, .05);
+          box-shadow: 0 1px 2px rgba(0, 0, 0, .05);
+}
+.panel-default > .panel-heading {
+  background-image: -webkit-linear-gradient(top, #f5f5f5 0%, #e8e8e8 100%);
+  background-image:      -o-linear-gradient(top, #f5f5f5 0%, #e8e8e8 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#f5f5f5), to(#e8e8e8));
+  background-image:         linear-gradient(to bottom, #f5f5f5 0%, #e8e8e8 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fff5f5f5', endColorstr='#ffe8e8e8', GradientType=0);
+  background-repeat: repeat-x;
+}
+.panel-primary > .panel-heading {
+  background-image: -webkit-linear-gradient(top, #337ab7 0%, #2e6da4 100%);
+  background-image:      -o-linear-gradient(top, #337ab7 0%, #2e6da4 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#337ab7), to(#2e6da4));
+  background-image:         linear-gradient(to bottom, #337ab7 0%, #2e6da4 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff337ab7', endColorstr='#ff2e6da4', GradientType=0);
+  background-repeat: repeat-x;
+}
+.panel-success > .panel-heading {
+  background-image: -webkit-linear-gradient(top, #dff0d8 0%, #d0e9c6 100%);
+  background-image:      -o-linear-gradient(top, #dff0d8 0%, #d0e9c6 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#dff0d8), to(#d0e9c6));
+  background-image:         linear-gradient(to bottom, #dff0d8 0%, #d0e9c6 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffdff0d8', endColorstr='#ffd0e9c6', GradientType=0);
+  background-repeat: repeat-x;
+}
+.panel-info > .panel-heading {
+  background-image: -webkit-linear-gradient(top, #d9edf7 0%, #c4e3f3 100%);
+  background-image:      -o-linear-gradient(top, #d9edf7 0%, #c4e3f3 100%);
+  background-image: -webkit-gradient(linear, left top, left bottom, from(#d9edf7), to(#c4e3f3));
+  background-image:         linear-gradient(to bottom, #d9edf7 0%, #c4e3f3 100%);
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+<glyph unicode="&#x1f511;" d="M250 1200h600q21 0 35.5 -14.5t14.5 -35.5v-400q0 -21 -14.5 -35.5t-35.5 -14.5h-150v-500l-255 -178q-19 -9 -32 -1t-13 29v650h-150q-21 0 -35.5 14.5t-14.5 35.5v400q0 21 14.5 35.5t35.5 14.5zM400 1100v-100h300v100h-300z" />
+<glyph unicode="&#x1f6aa;" d="M250 1200h750q39 0 69.5 -40.5t30.5 -84.5v-933l-700 -117v950l600 125h-700v-1000h-100v1025q0 23 15.5 49t34.5 26zM500 525v-100l100 20v100z" />
+</font>
+</defs></svg> 

static/bootstrap/3.3.7/js/npm.js

@@ -0,0 +1,13 @@
+// This file is autogenerated via the `commonjs` Grunt task. You can require() this file in a CommonJS environment.
+require('../../js/transition.js')
+require('../../js/alert.js')
+require('../../js/button.js')
+require('../../js/carousel.js')
+require('../../js/collapse.js')
+require('../../js/dropdown.js')
+require('../../js/modal.js')
+require('../../js/tooltip.js')
+require('../../js/popover.js')
+require('../../js/scrollspy.js')
+require('../../js/tab.js')
+require('../../js/affix.js')

static/index.html

@@ -26,38 +26,34 @@ limitations under the License.
 
         <title>Goldpinger</title>
 
-        <script type="text/javascript" src="https://cdn.jsdelivr.net/lodash/4.14.0/lodash.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/sigma.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.exporters.svg.min.js"></script>:
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.layout.forceAtlas2.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.neo4j.cypher.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.parsers.cypher.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.parsers.gexf.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.parsers.json.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.pathfinding.astar.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.plugins.animate.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.plugins.dragNodes.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.plugins.filter.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.plugins.neighborhoods.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.plugins.relativeSize.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.renderers.customEdgeShapes.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.renderers.customShapes.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.renderers.edgeLabels.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.renderers.parallelEdges.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.renderers.snapshot.min.js"></script>
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/sigma.js/1.1.0/plugins/sigma.statistics.HITS.min.js"></script>
+        <!-- Utilities -->
+        <script type="text/javascript" src="static/jquery/3.1.0/jquery.min.js"></script>
 
+        <!-- Sigma.js -->
+        <script type="text/javascript" src="static/sigma.js/1.1.0/sigma.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.exporters.svg.min.js"></script>:
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.layout.forceAtlas2.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.neo4j.cypher.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.parsers.cypher.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.parsers.gexf.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.parsers.json.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.pathfinding.astar.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.plugins.animate.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.plugins.dragNodes.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.plugins.filter.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.plugins.neighborhoods.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.plugins.relativeSize.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.renderers.customEdgeShapes.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.renderers.customShapes.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.renderers.edgeLabels.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.renderers.parallelEdges.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.renderers.snapshot.min.js"></script>
+        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.statistics.HITS.min.js"></script>
 
-        <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
-        
-        <!-- Latest compiled and minified CSS -->
-        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
-
-        <!-- Optional theme -->
-        <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
-
-        <!-- Latest compiled and minified JavaScript -->
-        <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
+        <!-- Bootstrap -->
+        <link rel="stylesheet" href="static/bootstrap/3.3.7/css/bootstrap.min.css" crossorigin="anonymous">
+        <link rel="stylesheet" href="static/bootstrap/3.3.7/css/bootstrap-theme.min.css" crossorigin="anonymous">
+        <script src="static/bootstrap/3.3.7/js/bootstrap.min.js" crossorigin="anonymous"></script>
 
         <style type="text/css">
                 body {
@@ -90,8 +86,9 @@ limitations under the License.
           <ul class="nav navbar-nav">
             <li class="active"><a href="#">Graph</a></li>
             <li><a href="#" id="show-data">Data</a></li>
-            <li><a href="/check_all" >Raw</a></li>
-            <li><a href="/metrics" >Metrics</a></li>
+            <li><a href="#" id="show-heatmap">Heatmap</a></li>
+            <li><a href="check_all" >Raw</a></li>
+            <li><a href="metrics" >Metrics</a></li>
           </ul>
         <div class="navbar-form navbar-left" role="search">
           <div class="form-group">
@@ -110,24 +107,70 @@ limitations under the License.
 
     </div>
 
-        <div id="modal-window-code" class="modal fade bs-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel">
-                <div class="modal-dialog modal-lg" role="document">
-                        <div class="modal-content">
-                                <div class="modal-header">
-                                        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
-                                        <h4 class="modal-title" id="modal-title">title</h4>
-                                </div>
-                                <div class="modal-body" id="modal-body">
-                                body
-                                </div>
-                                <div class="modal-footer">
-                                        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
-                                </div>
+    <div id="modal-window-code" class="modal fade bs-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel">
+        <div class="modal-dialog modal-lg" role="document">
+                <div class="modal-content">
+                        <div class="modal-header">
+                                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+                                <h4 class="modal-title" id="modal-title">title</h4>
+                        </div>
+                        <div class="modal-body" id="modal-body">
+                        body
+                        </div>
+                        <div class="modal-footer">
+                                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                         </div>
                 </div>
         </div>
+</div>
+
+
+<div id="modal-window-heatmap" class="modal fade bs-example-modal-lg" tabindex="-2" role="dialog" aria-labelledby="myLargeModalLabel">
+        <div class="modal-dialog modal-lg" role="document">
+                <div class="modal-content">
+                        <div class="modal-header">
+                                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+                                <h4 class="modal-title" id="modal-title">Heatmap</h4>
+                        </div>
+                        <div class="modal-body">
+
+                                <div id="heatmap-body" style="padding: 10px"></div>
+
+                                <div class="input-group">
+                                        <span class="input-group-addon" style="width: 200px">Good threshold</span>
+                                        <input id="t0" type="number" step="1" class="form-control" placeholder="2" value="2">
+                                        <span class="input-group-addon">milliseconds</span>
+                                </div>
+                                <div class="input-group">
+                                        <span class="input-group-addon" style="width: 200px">Warning threshold</span>
+                                        <input id="t1" type="number" step="1" class="form-control" placeholder="5" value="5">
+                                        <span class="input-group-addon">milliseconds</span>
+                                </div>
+                                <div class="input-group">
+                                        <span class="input-group-addon" style="width: 200px">Problem threshold</span>
+                                        <input id="t2" type="number" step="1" class="form-control" placeholder="100" value="100">
+                                        <span class="input-group-addon">milliseconds</span>
+                                </div>
+                        </div>
+                        <div class="modal-footer">
+                                <button class="btn btn-success" id="update-heatmap" type="button">refresh</button>
+                                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+                        </div>
+                </div>
+        </div>
+</div>
+
 
 <script>
+
+var getHeatmapUrl = function(){
+        return "heatmap.png?"
+                +  "t0=" + Number($("#t0").val())
+                + "&t1=" + Number($("#t1").val())
+                + "&t2=" + Number($("#t2").val())
+                + "&now=" + Date.now();
+}
+
 var fetchJSON = function(url) {
         return new Promise(function(resolve, reject) {
                 console.log("calling " + url);
@@ -176,7 +219,7 @@ var main = function(timeout){
 
         loadingDialog(true);
 
-        fetchJSON("/check_all?timeout="+timeout)
+        fetchJSON("check_all?timeout="+timeout)
         .then(function(data){
 
                 loadingDialog(false);
@@ -186,35 +229,95 @@ var main = function(timeout){
 
                 // prepare nodes
                 var nodes = [];
+                var dnsCheckNodes = [];
+                var podIPs = [];
                 var resp = data.responses;
-                _.forOwn(resp, function(value, podIP) {
+                for (let podIP in resp) {
+                        let value = resp[podIP];
                         nodes.push({
-                                "label": podIP+ " (" + value.HostIP + ")",
+                                "label": podIP + " (" + value.HostIP + ")",
                                 "id": podIP,
                                 "x": 0,
                                 "y": 0,
-                                _data: value
+                                _data: value,
                         });
-                });
-                //console.log(nodes);
+                        podIPs.push(podIP);
+                };
 
                 // prepare the edges
                 var edges = [];
                 var resp = data.responses;
-                _.forOwn(resp, function(value, source) {
-                        var call = value.response;
-                        if (!_.isString(call)){
-                            _.forOwn(call, function(value, target){
-                                    edges.push({
-                                            source: source,
-                                            target: target,
-                                            _data: value
-                                    });
+                for (let callId in resp) {
+                        // If there was an error, the response can be undefined,
+                        // especially if there was a timeout/context exceeded
+                        if (resp[callId].response !== undefined) {
+                                var call = resp[callId].response['podResults'];
+                                if (typeof call !== 'string'){
+                                        for (let target in call) {
+                                                edges.push({
+                                                        source: callId,
+                                                        target: target,
+                                                        _data: call[target]
+                                                });
+                                        };
+                                }
+                        }
+                };
+
+                console.log(edges);
+                console.log(nodes);
+
+                // if running goldpinger with PING_NUMBER, then we need to add nodes for the edges
+                // that are not reporting but are reported to
+                edges.forEach(function(edge) {
+                        [edge.source, edge.target].forEach(function(value) {
+                                if (podIPs.indexOf(value) == -1){
+                                        nodes.push({
+                                                "label": value,
+                                                "id": value,
+                                                "x": 0,
+                                                "y": 0,
+                                                _data: {},
+                                        });
+                                        podIPs.push(value);
+                                }
+                        })
+                })
+                console.log(nodes);
+
+                if ('dnsResults' in data) {
+                    var yoffset = 0;
+                    for (let checkedHost in data.dnsResults) {
+                        let value = data.dnsResults[checkedHost];
+                        var allOk = true;
+                        for (let pod in value) {
+                            var podData = value[pod];
+                            var elapsed = 0;
+                            if ('response-time-ms' in podData) {
+                                elapsed = podData['response-time-ms'];
+                            }
+                            var podOk = (!('error' in podData));
+                            allOk = allOk && podOk
+                            edges.push({
+                                source: pod,
+                                target: checkedHost,
+                                _data: {
+                                    "OK": podOk,
+                                    "elapsed": elapsed,
+                                    "isDNSCheckNode": true,
+                                }
                             });
                         }
-                });
-                //console.log(edges);
-
+                        value["OK"] = allOk
+                        dnsCheckNodes.push({
+                            "label": checkedHost,
+                            "id": checkedHost,
+                            "x": 0,
+                            "y": 0,
+                            _data: value,
+                        });
+                    }
+                }
 
                 // build the actual graph
                 s = new sigma({
@@ -247,6 +350,19 @@ var main = function(timeout){
                         s.graph.addNode(node);
                 });
 
+                // generate any dns nodes on the graph
+                dnsCheckNodes.forEach(function(node, i, a){
+                        node.x = 2;
+                        node.y = (0.6 * i / a.length) - 0.8;
+                        node.size = 10;
+                        node.color = "#4CC40B";
+                        if (!node._data.OK) {
+                                node.color = "red";
+                        }
+                        //console.log(node);
+                        s.graph.addNode(node);
+                });
+
                 // generate the edges
                 edges.forEach(function(edge, i){
                         var color = "#ccc";
@@ -258,6 +374,9 @@ var main = function(timeout){
                         if (!edge._data.OK) {
                                 color = "red";
                         }
+                        if ("isDNSCheckNode" in edge._data) {
+                                type = "dashed";
+                        }
                         var edge = {
                                 id: "e" + i,
                                 source: edge.source,
@@ -308,7 +427,7 @@ var main = function(timeout){
                         $('#modal-title').html(node.id);
                         $('#modal-body').html(prepareJSON(node._data));
 
-                        // show the things                
+                        // show the things
                         $('#modal-window-code').modal('show');
                 });
                 s.bind("clickStage", function (e) {
@@ -324,7 +443,7 @@ var main = function(timeout){
                         $('#modal-title').html(edge.id);
                         $('#modal-body').html(prepareJSON(edge._data));
 
-                        // show the things                
+                        // show the things
                         $('#modal-window-code').modal('show');
                 });
         })
@@ -340,18 +459,28 @@ main();
 
 $("#show-data").click(function (e) {
         // fill the voids
-        $('#modal-title').html("/check_all");
+        $('#modal-title').html("check_all");
         $('#modal-body').html(prepareJSON(global_data));
 
-        // show the things                
+        // show the things
         $('#modal-window-code').modal('show');
 });
 $("#reload-graph").click(function (e) {
         s.kill();
         main();
 });
+$("#show-heatmap").click(function (e) {
+        updateHeatmap();
+        $('#modal-window-heatmap').modal('show');
+});
+var updateHeatmap = function(){
+        $('#heatmap-body').html(
+                '<img src="' + getHeatmapUrl() + '" />'
+        );
+}
+$("#update-heatmap").click(function (e) {
+        updateHeatmap();
+});
 </script>
 </body>
 </html>
-
-

static/sigma.js/1.1.0/README.md

@@ -0,0 +1,35 @@
+[![Build Status](https://travis-ci.org/jacomyal/sigma.js.svg)](https://travis-ci.org/jacomyal/sigma.js)
+
+sigma.js - v1.1.0
+=================
+
+Sigma is a JavaScript library dedicated to graph drawing, mainly developed by [@jacomyal](https://github.com/jacomyal) and [@Yomguithereal](https://github.com/Yomguithereal).
+
+### Resources
+
+[The website](http://sigmajs.org) provides a global overview of the project, and the documentation is available in the [Github Wiki](https://github.com/jacomyal/sigma.js/wiki).
+
+Also, the `plugins` and `examples` directories contain various use-cases that might help you understand how to use sigma.
+
+### How to use it
+
+To use it, clone the repository:
+
+```
+git clone git@github.com:jacomyal/sigma.js.git
+```
+
+To build the code:
+
+ - Install [Node.js](http://nodejs.org/).
+ - Install [gjslint](https://developers.google.com/closure/utilities/docs/linter_howto?hl=en).
+ - Use `npm install` to install sigma development dependencies.
+ - Use `npm run build` to minify the code with [Uglify](https://github.com/mishoo/UglifyJS). The minified file `sigma.min.js` will then be accessible in the `build/` folder.
+
+Also, you can customize the build by adding or removing files from the `coreJsFiles` array in `Gruntfile.js` before applying the grunt task.
+
+### Contributing
+
+You can contribute by submitting [issues tickets](http://github.com/jacomyal/sigma.js/issues) and proposing [pull requests](http://github.com/jacomyal/sigma.js/pulls). Make sure that tests and linting pass before submitting any pull request by running the command `grunt`.
+
+The whole source code is validated by the [Google Closure Linter](https://developers.google.com/closure/utilities/) and [JSHint](http://www.jshint.com/), and the comments are written in [JSDoc](http://en.wikipedia.org/wiki/JSDoc) (tags description is available [here](https://developers.google.com/closure/compiler/docs/js-for-compiler)).

static/sigma.js/1.1.0/plugins/sigma.exporters.svg.min.js

@@ -0,0 +1 @@
+(function(){"use strict";function a(a){return new Blob([a],{type:"image/svg+xml;charset=utf-8"})}function b(b,c){var e=a(b),f={};f.anchor=document.createElement("a"),f.anchor.setAttribute("href",d.createObjectURL(e)),f.anchor.setAttribute("download",c);var g=document.createEvent("MouseEvent");g.initMouseEvent("click",!0,!1,window,0,0,0,0,0,!1,!1,!1,!1,0,null),d.revokeObjectURL(e),f.anchor.dispatchEvent(g),delete f.anchor}function c(a,b,c){var d,e,g,h,i,j={},k={},l=0,m="";c.classes&&(e=document.createElementNS(f,"style"),a.insertBefore(e,a.firstChild));var n=a.querySelectorAll('[id="'+b+'-group-nodes"] > [class="'+b+'-node"]');for(h=0,i=n.length,g=!0;i>h;h++)d=n[h].getAttribute("fill"),c.data||n[h].removeAttribute("data-node-id"),c.classes&&(d in j||(j[d]=g?b+"-node":"c-"+l++,m+="."+j[d]+"{fill: "+d+"}"),j[d]!==b+"-node"&&n[h].setAttribute("class",n[h].getAttribute("class")+" "+j[d]),n[h].removeAttribute("fill")),g=!1;var o=a.querySelectorAll('[id="'+b+'-group-edges"] > [class="'+b+'-edge"]');for(h=0,i=o.length,g=!0;i>h;h++)d=o[h].getAttribute("stroke"),c.data||o[h].removeAttribute("data-edge-id"),c.classes&&(d in k||(k[d]=g?b+"-edge":"c-"+l++,m+="."+k[d]+"{stroke: "+d+"}"),k[d]!==b+"-edge"&&o[h].setAttribute("class",o[h].getAttribute("class")+" "+k[d]),o[h].removeAttribute("stroke")),g=!1;c.classes&&e.appendChild(document.createTextNode(m))}if("undefined"==typeof sigma)throw"sigma.renderers.snapshot: sigma not in scope.";var d=this.URL||this.webkitURL||this,e={size:"1000",width:"1000",height:"1000",classes:!0,labels:!0,data:!1,download:!1,filename:"graph.svg"},f="http://www.w3.org/2000/svg";sigma.prototype.toSVG=function(a){a=a||{};var d=this.settings("classPrefix"),f=a.size||a.width||e.size,g=a.size||a.height||e.size,h=document.createElement("div");h.setAttribute("width",f),h.setAttribute("height",g),h.setAttribute("style","position:absolute; top: 0px; left:0px; width: "+f+"px; height: "+g+"px;");var i=this.addCamera(),j=this.addRenderer({camera:i,container:h,type:"svg",forceLabels:!!a.labels});j.resize(f,g),this.refresh(),this.killRenderer(j),this.killCamera(i);var k=h.querySelector("svg");if(k.removeAttribute("style"),k.setAttribute("width",f+"px"),k.setAttribute("height",g+"px"),k.setAttribute("x","0px"),k.setAttribute("y","0px"),!a.labels){var l=k.querySelector('[id="'+d+'-group-labels"]');k.removeChild(l)}var m=k.querySelector('[id="'+d+'-group-hovers"]');k.removeChild(m),a.classes=a.classes!==!1,(!a.data||a.classes)&&c(k,d,a);var n=k.outerHTML;h=null;var o='<?xml version="1.0" encoding="utf-8"?>\n';return o+='<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n',o+=n,a.download&&b(o,a.filename||e.filename),o}}).call(this);

static/sigma.js/1.1.0/plugins/sigma.neo4j.cypher.min.js

@@ -0,0 +1 @@
+(function(){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.neo4j"),sigma.utils.pkg("sigma.utils"),sigma.neo4j.send=function(a,b,c,d,e){var f,g,h,i=sigma.utils.xhr();if(f=a,"object"==typeof a&&(f=a.url,g=a.user,h=a.password),!i)throw"XMLHttpRequest not supported, cannot load the file.";f+=b,i.open(c,f,!0),g&&h&&i.setRequestHeader("Authorization","Basic "+btoa(g+":"+h)),i.setRequestHeader("Accept","application/json"),i.setRequestHeader("Content-type","application/json; charset=utf-8"),i.onreadystatechange=function(){4===i.readyState&&e(JSON.parse(i.responseText))},i.send(d)},sigma.neo4j.cypher_parse=function(a){var b,c={nodes:[],edges:[]},d={},e={};a.results[0].data.forEach(function(a){a.graph.nodes.forEach(function(a){var b={id:a.id,label:a.id,x:Math.random(),y:Math.random(),size:1,color:"#000000",neo4j_labels:a.labels,neo4j_data:a.properties};b.id in d||(d[b.id]=b)}),a.graph.relationships.forEach(function(a){var b={id:a.id,label:a.type,source:a.startNode,target:a.endNode,color:"#7D7C8E",neo4j_type:a.type,neo4j_data:a.properties};b.id in e||(e[b.id]=b)})});for(b in d)c.nodes.push(d[b]);for(b in e)c.edges.push(e[b]);return c},sigma.neo4j.cypher=function(a,b,c,d){var e,f,g="/db/data/transaction/commit";e=JSON.stringify({statements:[{statement:b,resultDataContents:["graph"],includeStats:!1}]}),f=function(a){return function(b){var d={nodes:[],edges:[]};d=sigma.neo4j.cypher_parse(b),c instanceof sigma?(c.graph.clear(),c.graph.read(d)):"object"==typeof c?(c=new sigma(c),c.graph.read(d),c.refresh()):"function"==typeof c&&(a=c,c=null),a&&a(c||d)}},sigma.neo4j.send(a,g,"POST",e,f(d))},sigma.neo4j.getLabels=function(a,b){sigma.neo4j.send(a,"/db/data/labels","GET",null,b)},sigma.neo4j.getTypes=function(a,b){sigma.neo4j.send(a,"/db/data/relationship/types","GET",null,b)}}).call(this);

static/sigma.js/1.1.0/plugins/sigma.parsers.cypher.min.js

@@ -0,0 +1 @@
+(function(){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.neo4j"),sigma.utils.pkg("sigma.utils"),sigma.utils.pkg("sigma.parsers"),sigma.neo4j.send=function(a,b,c,d,e){var f,g,h,i=sigma.utils.xhr();if(f=a,"object"==typeof a&&(f=a.url,g=a.user,h=a.password),!i)throw"XMLHttpRequest not supported, cannot load the file.";f+=b,i.open(c,f,!0),g&&h&&i.setRequestHeader("Authorization","Basic "+btoa(g+":"+h)),i.setRequestHeader("Accept","application/json"),i.setRequestHeader("Content-type","application/json; charset=utf-8"),i.onreadystatechange=function(){4===i.readyState&&e(JSON.parse(i.responseText))},i.send(d)},sigma.neo4j.cypher_parse=function(a){var b,c={nodes:[],edges:[]},d={},e={};a.results[0].data.forEach(function(a){a.graph.nodes.forEach(function(a){var b={id:a.id,label:a.id,x:Math.random(),y:Math.random(),size:1,color:"#000000",neo4j_labels:a.labels,neo4j_data:a.properties};b.id in d||(d[b.id]=b)}),a.graph.relationships.forEach(function(a){var b={id:a.id,label:a.type,source:a.startNode,target:a.endNode,color:"#7D7C8E",neo4j_type:a.type,neo4j_data:a.properties};b.id in e||(e[b.id]=b)})});for(b in d)c.nodes.push(d[b]);for(b in e)c.edges.push(e[b]);return c},sigma.neo4j.cypher=function(a,b,c,d){var e,f,g="/db/data/transaction/commit";e=JSON.stringify({statements:[{statement:b,resultDataContents:["graph"],includeStats:!1}]}),f=function(a){return function(b){var d={nodes:[],edges:[]};d=sigma.neo4j.cypher_parse(b),c instanceof sigma?(c.graph.clear(),c.graph.read(d)):"object"==typeof c?(c=new sigma(c),c.graph.read(d),c.refresh()):"function"==typeof c&&(a=c,c=null),a&&a(c||d)}},sigma.neo4j.send(a,g,"POST",e,f(d))},sigma.neo4j.getLabels=function(a,b){sigma.neo4j.send(a,"/db/data/labels","GET",null,b)},sigma.neo4j.getTypes=function(a,b){sigma.neo4j.send(a,"/db/data/relationship/types","GET",null,b)}}).call(this);

static/sigma.js/1.1.0/plugins/sigma.parsers.json.min.js

@@ -0,0 +1 @@
+(function(){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.parsers"),sigma.utils.pkg("sigma.utils"),sigma.utils.xhr=function(){if(window.XMLHttpRequest)return new XMLHttpRequest;var a,b;if(window.ActiveXObject){a=["Msxml2.XMLHTTP.6.0","Msxml2.XMLHTTP.3.0","Msxml2.XMLHTTP","Microsoft.XMLHTTP"];for(b in a)try{return new ActiveXObject(a[b])}catch(c){}}return null},sigma.parsers.json=function(a,b,c){var d,e=sigma.utils.xhr();if(!e)throw"XMLHttpRequest not supported, cannot load the file.";e.open("GET",a,!0),e.onreadystatechange=function(){4===e.readyState&&(d=JSON.parse(e.responseText),b instanceof sigma?(b.graph.clear(),b.graph.read(d)):"object"==typeof b?(b.graph=d,b=new sigma(b)):"function"==typeof b&&(c=b,b=null),c&&c(b||d))},e.send()}}).call(this);

static/sigma.js/1.1.0/plugins/sigma.pathfinding.astar.min.js

@@ -0,0 +1 @@
+(function(){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";var a=function(a,b,c){var d=void 0!=a&&void 0!=b&&void 0!=a.x&&void 0!=a.y&&void 0!=b.x&&void 0!=b.y;return d?(c||0)+Math.sqrt(Math.pow(b.y-a.y,2)+Math.pow(b.x-a.x,2)):void 0};sigma.classes.graph.addMethod("astar",function(b,c,d){var e=new sigma.classes.configurable({undirected:!1,pathLengthFunction:a,heuristicLengthFunction:void 0},d||{}),f=e("pathLengthFunction"),g=e("heuristicLengthFunction")||f,h=this.nodes(b),i=this.nodes(c),j={},k=[],l=function(a,b,c,d){var e=a.id,f={pathLength:c,heuristicLength:d,node:a,nodeId:e,previousNode:b};if(void 0==j[e]||j[e].pathLenth>c){j[e]=f;var g,h;for(h=0;h<k.length&&(g=k[h],!(g.heuristicLength>d));h++);k.splice(h,0,f)}};l(h,null,0,0);var m,n=!1;m=e("undirected")?this.allNeighborsIndex:this.outNeighborsIndex;for(var o,p,q,r,s,t;k.length>0;){if(o=k.shift(),o.nodeId==c){n=!0;break}for(p=Object.keys(m[o.nodeId]),t=0;t<p.length;t++)q=this.nodes(p[t]),r=f(o.node,q,o.pathLength),s=g(q,i),l(q,o.node,r,s)}if(n){for(var u=[],v=i;v;)u.unshift(v),v=j[v.id].previousNode;return u}return void 0})}).call(window);

static/sigma.js/1.1.0/plugins/sigma.plugins.animate.min.js

@@ -0,0 +1 @@
+(function(){"use strict";function a(a){if(d[a])return d[a];var b=[0,0,0];return a.match(/^#/)?(a=(a||"").replace(/^#/,""),b=3===a.length?[parseInt(a.charAt(0)+a.charAt(0),16),parseInt(a.charAt(1)+a.charAt(1),16),parseInt(a.charAt(2)+a.charAt(2),16)]:[parseInt(a.charAt(0)+a.charAt(1),16),parseInt(a.charAt(2)+a.charAt(3),16),parseInt(a.charAt(4)+a.charAt(5),16)]):a.match(/^ *rgba? *\(/)&&(a=a.match(/^ *rgba? *\( *([0-9]*) *, *([0-9]*) *, *([0-9]*) *(,.*)?\) *$/),b=[+a[1],+a[2],+a[3]]),d[a]={r:b[0],g:b[1],b:b[2]},d[a]}function b(b,c,d){b=a(b),c=a(c);var e={r:b.r*(1-d)+c.r*d,g:b.g*(1-d)+c.g*d,b:b.b*(1-d)+c.b*d};return"rgb("+[0|e.r,0|e.g,0|e.b].join(",")+")"}if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.plugins");var c=0,d={};sigma.plugins.animate=function(a,d,e){function f(){var c=(sigma.utils.dateNow()-m)/k;if(c>=1){g.forEach(function(a){for(var b in d)b in d&&(a[b]=a[d[b]])});var e,n;for(e in a.cameras)n=a.cameras[e],n.edgequadtree._enabled=!0;a.refresh(),"function"==typeof i.onComplete&&i.onComplete()}else c=l(c),g.forEach(function(a){for(var e in d)e in d&&(a[e]=e.match(/color$/)?b(h[a.id][e],a[d[e]],c):a[d[e]]*c+h[a.id][e]*(1-c))}),a.refresh(),a.animations[j]=requestAnimationFrame(f)}var g,h,i=e||{},j=++c,k=i.duration||a.settings("animationsTime"),l="string"==typeof i.easing?sigma.utils.easings[i.easing]:"function"==typeof i.easing?i.easing:sigma.utils.easings.quadraticInOut,m=sigma.utils.dateNow();g=i.nodes&&i.nodes.length?"object"==typeof i.nodes[0]?i.nodes:a.graph.nodes(i.nodes):a.graph.nodes(),h=g.reduce(function(a,b){var c;a[b.id]={};for(c in d)c in b&&(a[b.id][c]=b[c]);return a},{}),a.animations=a.animations||Object.create({}),sigma.plugins.kill(a);var n,o;for(n in a.cameras)o=a.cameras[n],o.edgequadtree._enabled=!1;f()},sigma.plugins.kill=function(a){for(var b in a.animations||{})cancelAnimationFrame(a.animations[b]);var b,c;for(b in a.cameras)c=a.cameras[b],c.edgequadtree._enabled=!0}}).call(window);

static/sigma.js/1.1.0/plugins/sigma.plugins.dragNodes.min.js

@@ -0,0 +1 @@
+(function(){"use strict";function a(a,b){function c(a){var b=window.getComputedStyle(a),c=function(a){return parseInt(b.getPropertyValue(a).replace("px",""))||0};return{left:a.getBoundingClientRect().left+c("padding-left"),top:a.getBoundingClientRect().top+c("padding-top")}}function d(){t=!1,l.removeEventListener("mousemove",i),l.removeEventListener("mouseup",h),r.length||(p=null)}function e(a){s[a.data.node.id]||(r.push(a.data.node),s[a.data.node.id]=!0,r.length&&!t&&(p=r[r.length-1],n.addEventListener("mousedown",g)))}function f(a){var b=r.map(function(a){return a}).indexOf(a.data.node);r.splice(b,1),delete s[a.data.node.id],r.length&&!t?p=r[r.length-1]:n.removeEventListener("mousedown",g)}function g(a){t=!0;var b=k.graph.nodes().length;if(p&&b>1){n.removeEventListener("mousedown",g),l.addEventListener("mousemove",i),l.addEventListener("mouseup",h);var c,d;for(c in k.cameras)d=k.cameras[c],void 0!==d.edgequadtree&&(d.edgequadtree._enabled=!1);m.settings({mouseEnabled:!1,enableHovering:!1}),k.refresh(),j.dispatchEvent("startdrag",{node:p,captor:a,renderer:m})}}function h(a){t=!1,n.addEventListener("mousedown",g),l.removeEventListener("mousemove",i),l.removeEventListener("mouseup",h);var b,c;for(b in k.cameras)c=k.cameras[b],void 0!==c.edgequadtree&&(c.edgequadtree._enabled=!0);m.settings({mouseEnabled:!0,enableHovering:!0}),k.refresh(),u&&j.dispatchEvent("drop",{node:p,captor:a,renderer:m}),j.dispatchEvent("dragend",{node:p,captor:a,renderer:m}),u=!1,p=null}function i(a){function b(){for(var b=c(m.container),d=a.clientX-b.left,e=a.clientY-b.top,f=Math.cos(o.angle),g=Math.sin(o.angle),h=k.graph.nodes(),i=[],l=0;2>l;l++){var n=h[l],r={x:n.x*f+n.y*g,y:n.y*f-n.x*g,renX:n[q+"x"],renY:n[q+"y"]};i.push(r)}if(i[0].x===i[1].x&&i[0].y===i[1].y){var s=0===i[0].renX?1:i[0].renX,t=0===i[0].renY?1:i[0].renY;d=i[0].x/s*(d-i[0].renX)+i[0].x,e=i[0].y/t*(e-i[0].renY)+i[0].y}else{var s=(i[1].renX-i[0].renX)/(i[1].x-i[0].x),t=(i[1].renY-i[0].renY)/(i[1].y-i[0].y);i[1].x===i[0].x&&(s=t),i[1].y===i[0].y&&(t=s),d=(d-i[0].renX)/s+i[0].x,e=(e-i[0].renY)/t+i[0].y}p.x=d*f-e*g,p.y=e*f+d*g,k.refresh(),u=!0,j.dispatchEvent("drag",{node:p,captor:a,renderer:m})}if(navigator.userAgent.toLowerCase().indexOf("firefox")>-1){clearTimeout(d);var d=setTimeout(b,0)}else b()}sigma.classes.dispatcher.extend(this);var j=this,k=a,l=document.body,m=b,n=b.container.lastChild,o=b.camera,p=null,q="",r=[],s={},t=!1,u=!1;b instanceof sigma.renderers.svg&&(n=b.container.firstChild),q=b instanceof sigma.renderers.webgl?b.options.prefix.substr(5):b.options.prefix,b.bind("overNode",e),b.bind("outNode",f),b.bind("click",d),k.bind("kill",function(){j.unbindAll()}),this.unbindAll=function(){n.removeEventListener("mousedown",g),l.removeEventListener("mousemove",i),l.removeEventListener("mouseup",h),m.unbind("overNode",e),m.unbind("outNode",f)}}if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.plugins");var b={};sigma.plugins.dragNodes=function(c,d){return b[c.id]||(b[c.id]=new a(c,d)),c.bind("kill",function(){sigma.plugins.killDragNodes(c)}),b[c.id]},sigma.plugins.killDragNodes=function(c){b[c.id]instanceof a&&(b[c.id].unbindAll(),delete b[c.id])}}).call(window);