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Merge pull request #64 from stefanprodan/cache-api

Browse Source 
Add cache API
This commit is contained in:
Stefan Prodan
2020-05-16 09:59:19 +03:00
committed by GitHub
parent e5516b38cb 73b658d711
commit 067751c67d
21 changed files with 435 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
README.md
View File

@@ -41,6 +41,8 @@ Web API:
* `POST /token` issues a JWT token valid for one minute `JWT=$(curl -sd 'anon' podinfo:9898/token | jq -r .token)`
* `GET /token/validate` validates the JWT token `curl -H "Authorization: Bearer $JWT" podinfo:9898/token/validate`
* `GET /configs` returns a JSON with configmaps and/or secrets mounted in the `config` volume
* `POST /cache` saves the posted content to Redis and returns the SHA1 hash of the content
* `GET /store/{hash}` returns the content from Redis if the key exists
* `POST /store` writes the posted content to disk at /data/hash and returns the SHA1 hash of the content
* `GET /store/{hash}` returns the content of the file /data/hash if exists
* `GET /ws/echo` echos content via websockets `podcli ws ws://localhost:9898/ws/echo`

1
charts/podinfo/README.md
View File

@@ -35,6 +35,7 @@ Parameter | Default | Description
`logLevel` | `info` | Log level: `debug`, `info`, `warn`, `error`, `flat` or `panic`
`backend` | `None` | Echo backend URL
`backends` | `[]` | Array of echo backend URLs
`cache` | `None` | Redis address in the format `<host>:<port>`
`ui.color` | `#34577c` | UI color
`ui.message` | `None` | UI greetings message
`ui.logo` | `None` | UI logo

3
charts/podinfo/templates/deployment.yaml
View File

@@ -49,6 +49,9 @@ spec:
{{- range .Values.backends }}
- --backend-url={{ . }}
{{- end }}
{{- if .Values.cache }}
- --cache-server={{ .Values.cache }}
{{- end }}
- --level={{ .Values.logLevel }}
- --random-delay={{ .Values.faults.delay }}
- --random-error={{ .Values.faults.error }}

1
charts/podinfo/values.yaml
View File

@@ -4,6 +4,7 @@ replicaCount: 1
logLevel: info
backend: #http://backend-podinfo:9898/echo
backends: []
cache: ""
ui:
color: "#34577c"

1
cmd/podinfo/main.go
View File

@@ -46,6 +46,7 @@ func main() {
fs.Bool("unready", false, "when set, ready state is never reached")
fs.Int("stress-cpu", 0, "number of CPU cores with 100 load")
fs.Int("stress-memory", 0, "MB of data to load into memory")
fs.String("cache-server", "", "Redis address in the format <host>:<port>")
versionFlag := fs.BoolP("version", "v", false, "get version number")

1
deploy/bases/backend/deployment.yaml
View File

@@ -42,6 +42,7 @@ spec:
- --grpc-port=9999
- --grpc-service-name=backend
- --level=info
- --cache-server=cache:6379
env:
- name: PODINFO_UI_COLOR
value: "#34577c"

57
deploy/bases/cache/deployment.yaml vendored Normal file
View File

@@ -0,0 +1,57 @@
apiVersion: apps/v1
kind: Deployment
metadata:
name: cache
spec:
selector:
matchLabels:
app: cache
template:
metadata:
labels:
app: cache
spec:
containers:
- name: redis
image: redis:6.0.1
imagePullPolicy: IfNotPresent
command:
- redis-server
- "/redis-master/redis.conf"
ports:
- name: redis
containerPort: 6379
protocol: TCP
livenessProbe:
tcpSocket:
port: redis
initialDelaySeconds: 5
timeoutSeconds: 5
readinessProbe:
exec:
command:
- redis-cli
- ping
initialDelaySeconds: 5
timeoutSeconds: 5
resources:
limits:
cpu: 1000m
memory: 128Mi
requests:
cpu: 100m
memory: 32Mi
volumeMounts:
- mountPath: /var/lib/redis
name: data
- mountPath: /redis-master
name: config
volumes:
- name: data
emptyDir: {}
- name: config
configMap:
name: redis-config
items:
- key: redis.conf
path: redis.conf

9
deploy/bases/cache/kustomization.yaml vendored Normal file
View File

@@ -0,0 +1,9 @@
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- service.yaml
- deployment.yaml
configMapGenerator:
- name: redis-config
files:
- redis.conf

4
deploy/bases/cache/redis.conf vendored Normal file
View File

@@ -0,0 +1,4 @@
maxmemory 64mb
maxmemory-policy allkeys-lru
save ""
appendonly no

13
deploy/bases/cache/service.yaml vendored Normal file
View File

@@ -0,0 +1,13 @@
apiVersion: v1
kind: Service
metadata:
name: cache
spec:
type: ClusterIP
selector:
app: cache
ports:
- name: redis
port: 6379
protocol: TCP
targetPort: redis

1
deploy/bases/frontend/deployment.yaml
View File

@@ -41,6 +41,7 @@ spec:
- --port-metrics=9797
- --level=info
- --backend-url=http://backend:9898/echo
- --cache-server=cache:6379
env:
- name: PODINFO_UI_COLOR
value: "#34577c"

1
deploy/overlays/dev/kustomization.yaml
View File

@@ -4,6 +4,7 @@ namespace: dev
resources:
- ../../bases/backend
- ../../bases/frontend
- ../../bases/cache
- namespace.yaml
transformers:
- labels.yaml

1
deploy/overlays/production/kustomization.yaml
View File

@@ -4,6 +4,7 @@ namespace: production
resources:
- ../../bases/backend
- ../../bases/frontend
- ../../bases/cache
- namespace.yaml
transformers:
- labels.yaml

1
deploy/overlays/staging/kustomization.yaml
View File

@@ -4,6 +4,7 @@ namespace: staging
resources:
- ../../bases/backend
- ../../bases/frontend
- ../../bases/cache
- namespace.yaml
transformers:
- labels.yaml

7
go.mod
View File

@@ -10,17 +10,18 @@ require (
github.com/dgrijalva/jwt-go v3.2.0+incompatible
github.com/fatih/color v1.7.0
github.com/fsnotify/fsnotify v1.4.7
github.com/go-chi/chi v4.0.3+incompatible // indirect
github.com/go-chi/chi v4.1.1+incompatible // indirect
github.com/gomodule/redigo v1.8.1
github.com/gorilla/mux v1.7.4
github.com/gorilla/websocket v1.4.2
github.com/hashicorp/go-getter v1.4.1
github.com/prometheus/client_golang v1.5.1
github.com/spf13/cobra v0.0.6
github.com/spf13/cobra v1.0.0
github.com/spf13/pflag v1.0.5
github.com/spf13/viper v1.6.2
github.com/swaggo/http-swagger v0.0.0-20190614090009-c2865af9083e
github.com/swaggo/swag v1.6.5
go.uber.org/zap v1.10.0
go.uber.org/zap v1.15.0
golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297
google.golang.org/grpc v1.23.0
)

38
go.sum
View File

@@ -52,6 +52,7 @@ github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3Ee
github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
github.com/cpuguy83/go-md2man/v2 v2.0.0 h1:EoUDS0afbrsXAZ9YQ9jdu/mZ2sXgT1/2yyNng4PGlyM=
github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
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=
@@ -71,8 +72,8 @@ github.com/gin-contrib/sse v0.0.0-20190301062529-5545eab6dad3/go.mod h1:VJ0WA2NB
github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
github.com/gin-gonic/gin v1.3.0/go.mod h1:7cKuhb5qV2ggCFctp2fJQ+ErvciLZrIeoOSOm6mUr7Y=
github.com/gin-gonic/gin v1.4.0/go.mod h1:OW2EZn3DO8Ln9oIKOvM++LBO+5UPHJJDH72/q/3rZdM=
github.com/go-chi/chi v4.0.3+incompatible h1:gakN3pDJnzZN5jqFV2TEdF66rTfKeITyR8qu6ekICEY=
github.com/go-chi/chi v4.0.3+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
github.com/go-chi/chi v4.1.1+incompatible h1:MmTgB0R8Bt/jccxp+t6S/1VGIKdJw5J74CK/c9tTfA4=
github.com/go-chi/chi v4.1.1+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
@@ -111,6 +112,8 @@ github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5y
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/gomodule/redigo v1.8.1 h1:Abmo0bI7Xf0IhdIPc7HZQzZcShdnmxeoVuDDtIQp8N8=
github.com/gomodule/redigo v1.8.1/go.mod h1:P9dn9mFrCBvWhGE1wpxx6fgq7BAeLBk+UUUzlpkBYO0=
github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
@@ -123,6 +126,7 @@ github.com/google/martian v2.1.0+incompatible h1:/CP5g8u/VJHijgedC/Legn3BAbAaWPg
github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
github.com/googleapis/gax-go/v2 v2.0.5 h1:sjZBwGj9Jlw33ImPtvFviGYvseOtDM7hkSKB7+Tv3SM=
github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
@@ -233,8 +237,11 @@ github.com/prometheus/procfs v0.0.8 h1:+fpWZdT24pJBiqJdAwYBjPSk+5YmQzYNPYzQsdzLk
github.com/prometheus/procfs v0.0.8/go.mod h1:7Qr8sr6344vo1JqZ6HhLceV9o3AJ1Ff+GxbHq6oeK9A=
github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
@@ -248,8 +255,8 @@ github.com/spf13/afero v1.1.2 h1:m8/z1t7/fwjysjQRYbP0RD+bUIF/8tJwPdEZsI83ACI=
github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8=
github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
github.com/spf13/cobra v0.0.6 h1:breEStsVwemnKh2/s6gMvSdMEkwW0sK8vGStnlVBMCs=
github.com/spf13/cobra v0.0.6/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE=
github.com/spf13/cobra v1.0.0 h1:6m/oheQuQ13N9ks4hubMG6BnvwOeaJrqSPLahSnczz8=
github.com/spf13/cobra v1.0.0/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE=
github.com/spf13/jwalterweatherman v1.0.0 h1:XHEdyB+EcvlqZamSM4ZOMGlc93t6AcsBEu9Gc1vn7yk=
github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
@@ -268,6 +275,8 @@ github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/subosito/gotenv v1.2.0 h1:Slr1R9HxAlEKefgq5jn9U+DnETlIUa6HfgEzj0g5d7s=
github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
github.com/swaggo/files v0.0.0-20190704085106-630677cd5c14 h1:PyYN9JH5jY9j6av01SpfRMb+1DWg/i3MbGOKPxJ2wjM=
@@ -287,6 +296,7 @@ github.com/ulikunitz/xz v0.5.5 h1:pFrO0lVpTBXLpYw+pnLj6TbvHuyjXMfjGeCwSqCVwok=
github.com/ulikunitz/xz v0.5.5/go.mod h1:2bypXElzHzzJZwzH67Y6wb67pO62Rzfn7BSiF4ABRW8=
github.com/urfave/cli v1.20.0 h1:fDqGv3UG/4jbVl/QkFwEdddtEDjh/5Ov6X+0B/3bPaw=
github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
github.com/urfave/cli v1.22.2 h1:gsqYFH8bb9ekPA12kRo0hfjngWQjkJPlN9R0N78BoUo=
github.com/urfave/cli v1.22.2/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
@@ -296,12 +306,21 @@ go.opencensus.io v0.22.0 h1:C9hSCOW830chIVkdja34wa6Ky+IzWllkUinR+BtRZd4=
go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
go.uber.org/atomic v1.4.0 h1:cxzIVoETapQEqDhQu3QfnvXAV4AlzcvUCxkVUFw3+EU=
go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
go.uber.org/atomic v1.6.0 h1:Ezj3JGmsOnG1MoRWQkPBsKLe9DwWD9QeXzTRzzldNVk=
go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
go.uber.org/multierr v1.1.0 h1:HoEmRHQPVSqub6w2z2d2EOVs2fjyFRGyofhKuyDq0QI=
go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
go.uber.org/multierr v1.5.0 h1:KCa4XfM8CWFCpxXRGok+Q0SS/0XBhMDbHHGABQLvD2A=
go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=
go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee h1:0mgffUl7nfd+FpvXMVz4IDEaUSmT1ysygQC7qYo7sG4=
go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
go.uber.org/zap v1.10.0 h1:ORx85nbTijNz8ljznvCMR1ZBIPKFn3jQrag10X2AsuM=
go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
go.uber.org/zap v1.15.0 h1:ZZCA22JRF2gQE5FoNmhmrf7jeJJ2uhqDUNRYKm8dvmM=
go.uber.org/zap v1.15.0/go.mod h1:Mb2vm2krFEG5DV0W9qcHBYFtp/Wku1cvYaqPsS/WYfc=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -312,7 +331,10 @@ golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvx
golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs=
golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20181005035420-146acd28ed58/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -385,8 +407,13 @@ golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgw
golang.org/x/tools v0.0.0-20190611222205-d73e1c7e250b/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20190614205625-5aca471b1d59 h1:QjA/9ArTfVTLfEhClDCG7SGrZkZixxWpwNCDiwJfh88=
golang.org/x/tools v0.0.0-20190614205625-5aca471b1d59/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0 h1:Dh6fw+p6FyRl5x/FvNswO1ji0lIGzm3KP8Y9VkS9PTE=
golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5 h1:hKsoRgsbwY1NafxrwTs+k64bikrLBkAgPir1TNCj3Zs=
golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
@@ -421,6 +448,7 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/cheggaaa/pb.v1 v1.0.27/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y=
gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=
@@ -437,4 +465,6 @@ honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWh
honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
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=
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=

93
pkg/api/cache.go Normal file
View File

@@ -0,0 +1,93 @@
package api
import (
"github.com/gomodule/redigo/redis"
"github.com/gorilla/mux"
"go.uber.org/zap"
"io/ioutil"
"net/http"
"time"
)
// Cache godoc
// @Summary Save payload in cache
// @Description writes the posted content in cache and returns the SHA1 hash of the content
// @Tags HTTP API
// @Accept json
// @Produce json
// @Router /cache [post]
// @Success 200 {object} api.MapResponse
func (s *Server) cacheWriteHandler(w http.ResponseWriter, r *http.Request) {
if s.pool == nil {
s.ErrorResponse(w, r, "cache server is offline", http.StatusBadRequest)
return
}
body, err := ioutil.ReadAll(r.Body)
if err != nil {
s.ErrorResponse(w, r, "reading the request body failed", http.StatusBadRequest)
return
}
hash := hash(string(body))
conn := s.pool.Get()
defer conn.Close()
_, err = conn.Do("SET", hash, string(body))
if err != nil {
s.logger.Warn("cache set failed", zap.Error(err))
s.ErrorResponse(w, r, "cache set failed", http.StatusInternalServerError)
return
}
s.JSONResponseCode(w, r, map[string]string{"hash": hash}, http.StatusAccepted)
}
// Cache godoc
// @Summary Get payload from cache
// @Description returns the content from cache if key exists
// @Tags HTTP API
// @Accept json
// @Produce json
// @Router /cache/{hash} [get]
// @Success 200 {string} api.MapResponse
func (s *Server) cacheReadHandler(w http.ResponseWriter, r *http.Request) {
if s.pool == nil {
s.ErrorResponse(w, r, "cache server is offline", http.StatusBadRequest)
return
}
hash := mux.Vars(r)["hash"]
conn := s.pool.Get()
defer conn.Close()
ok, err := redis.Bool(conn.Do("EXISTS", hash))
if err != nil || !ok {
s.ErrorResponse(w, r, "key not found in cache", http.StatusNotFound)
return
}
data, err := redis.String(conn.Do("GET", hash))
if err != nil {
s.logger.Warn("cache get failed", zap.Error(err))
s.ErrorResponse(w, r, "cache get failed", http.StatusInternalServerError)
return
}
s.JSONResponseCode(w, r, map[string]string{"data": data}, http.StatusAccepted)
}
func (s *Server) startCachePool() {
if s.config.CacheServer != "" {
s.pool = &redis.Pool{
MaxIdle: 3,
IdleTimeout: 240 * time.Second,
Dial: func() (redis.Conn, error) {
return redis.Dial("tcp", s.config.CacheServer)
},
TestOnBorrow: func(c redis.Conn, t time.Time) error {
_, err := c.Do("PING")
return err
},
}
}
}

96
pkg/api/docs/docs.go
View File

@@ -1,12 +1,13 @@
// GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
// This file was generated by swaggo/swag at
// 2019-08-07 15:52:23.918713 +0300 EEST m=+0.023438272
// 2020-05-16 09:49:23.920068 +0300 EEST m=+0.052088436
package docs
import (
"bytes"
"encoding/json"
"strings"
"github.com/alecthomas/template"
"github.com/swaggo/swag"
@@ -16,8 +17,8 @@ var doc = `{
"schemes": {{ marshal .Schemes }},
"swagger": "2.0",
"info": {
"description": "Go microservice template for Kubernetes.",
"title": "Podinfo API",
"description": "{{.Description}}",
"title": "{{.Title}}",
"contact": {
"name": "Source Code",
"url": "https://github.com/stefanprodan/podinfo"
@@ -26,10 +27,10 @@ var doc = `{
"name": "MIT License",
"url": "https://github.com/stefanprodan/podinfo/blob/master/LICENSE"
},
"version": "2.0"
"version": "{{.Version}}"
},
"host": "localhost:9898",
"basePath": "/",
"host": "{{.Host}}",
"basePath": "{{.BasePath}}",
"paths": {
"/": {
"get": {
@@ -68,7 +69,6 @@ var doc = `{
"202": {
"description": "Accepted",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -92,13 +92,58 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.RuntimeResponse"
}
}
}
}
},
"/cache": {
"post": {
"description": "writes the posted content in cache and returns the SHA1 hash of the content",
"consumes": [
"application/json"
],
"produces": [
"application/json"
],
"tags": [
"HTTP API"
],
"summary": "Save payload in cache",
"responses": {
"200": {
"description": "OK",
"schema": {
"$ref": "#/definitions/api.MapResponse"
}
}
}
}
},
"/cache/{hash}": {
"get": {
"description": "returns the content from cache if key exists",
"consumes": [
"application/json"
],
"produces": [
"application/json"
],
"tags": [
"HTTP API"
],
"summary": "Get payload from cache",
"responses": {
"200": {
"description": "OK",
"schema": {
"type": "string"
}
}
}
}
},
"/chunked/{seconds}": {
"get": {
"description": "uses transfer-encoding type chunked to give a partial response and then waits for the specified period",
@@ -116,7 +161,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -140,7 +184,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -164,7 +207,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.ArrayResponse"
}
}
@@ -188,7 +230,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.ArrayResponse"
}
}
@@ -333,7 +374,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -357,7 +397,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -404,7 +443,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.TokenResponse"
}
}
@@ -428,7 +466,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.TokenValidationResponse"
}
},
@@ -455,7 +492,6 @@ var doc = `{
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -479,7 +515,6 @@ var doc = `{
"202": {
"description": "Accepted",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -490,11 +525,15 @@ var doc = `{
"definitions": {
"api.ArrayResponse": {
"type": "array",
"items": {}
"items": {
"type": "string"
}
},
"api.MapResponse": {
"type": "object",
"additionalProperties": {}
"additionalProperties": {
"type": "string"
}
},
"api.RuntimeResponse": {
"type": "object",
@@ -511,6 +550,9 @@ var doc = `{
"hostname": {
"type": "string"
},
"logo": {
"type": "string"
},
"message": {
"type": "string"
},
@@ -566,11 +608,21 @@ type swaggerInfo struct {
}
// SwaggerInfo holds exported Swagger Info so clients can modify it
var SwaggerInfo = swaggerInfo{Schemes: []string{"http", "https"}}
var SwaggerInfo = swaggerInfo{
Version: "2.0",
Host: "localhost:9898",
BasePath: "/",
Schemes: []string{"http", "https"},
Title: "Podinfo API",
Description: "Go microservice template for Kubernetes.",
}
type s struct{}
func (s *s) ReadDoc() string {
sInfo := SwaggerInfo
sInfo.Description = strings.Replace(sInfo.Description, "\n", "\\n", -1)
t, err := template.New("swagger_info").Funcs(template.FuncMap{
"marshal": func(v interface{}) string {
a, _ := json.Marshal(v)
@@ -582,7 +634,7 @@ func (s *s) ReadDoc() string {
}
var tpl bytes.Buffer
if err := t.Execute(&tpl, SwaggerInfo); err != nil {
if err := t.Execute(&tpl, sInfo); err != nil {
return doc
}

73
pkg/api/docs/swagger.json
View File

@@ -1,4 +1,8 @@
{
"schemes": [
"http",
"https"
],
"swagger": "2.0",
"info": {
"description": "Go microservice template for Kubernetes.",
@@ -53,7 +57,6 @@
"202": {
"description": "Accepted",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -77,13 +80,58 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.RuntimeResponse"
}
}
}
}
},
"/cache": {
"post": {
"description": "writes the posted content in cache and returns the SHA1 hash of the content",
"consumes": [
"application/json"
],
"produces": [
"application/json"
],
"tags": [
"HTTP API"
],
"summary": "Save payload in cache",
"responses": {
"200": {
"description": "OK",
"schema": {
"$ref": "#/definitions/api.MapResponse"
}
}
}
}
},
"/cache/{hash}": {
"get": {
"description": "returns the content from cache if key exists",
"consumes": [
"application/json"
],
"produces": [
"application/json"
],
"tags": [
"HTTP API"
],
"summary": "Get payload from cache",
"responses": {
"200": {
"description": "OK",
"schema": {
"type": "string"
}
}
}
}
},
"/chunked/{seconds}": {
"get": {
"description": "uses transfer-encoding type chunked to give a partial response and then waits for the specified period",
@@ -101,7 +149,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -125,7 +172,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -149,7 +195,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.ArrayResponse"
}
}
@@ -173,7 +218,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.ArrayResponse"
}
}
@@ -318,7 +362,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -342,7 +385,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -389,7 +431,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.TokenResponse"
}
}
@@ -413,7 +454,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.TokenValidationResponse"
}
},
@@ -440,7 +480,6 @@
"200": {
"description": "OK",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -464,7 +503,6 @@
"202": {
"description": "Accepted",
"schema": {
"type": "object",
"$ref": "#/definitions/api.MapResponse"
}
}
@@ -475,11 +513,15 @@
"definitions": {
"api.ArrayResponse": {
"type": "array",
"items": {}
"items": {
"type": "string"
}
},
"api.MapResponse": {
"type": "object",
"additionalProperties": {}
"additionalProperties": {
"type": "string"
}
},
"api.RuntimeResponse": {
"type": "object",
@@ -496,6 +538,9 @@
"hostname": {
"type": "string"
},
"logo": {
"type": "string"
},
"message": {
"type": "string"
},

54
pkg/api/docs/swagger.yaml
View File

@@ -1,10 +1,12 @@
basePath: /
definitions:
api.ArrayResponse:
items: {}
items:
type: string
type: array
api.MapResponse:
additionalProperties: {}
additionalProperties:
type: string
type: object
api.RuntimeResponse:
properties:
@@ -16,6 +18,8 @@ definitions:
type: string
hostname:
type: string
logo:
type: string
message:
type: string
num_cpu:
@@ -80,7 +84,6 @@ paths:
description: Accepted
schema:
$ref: '#/definitions/api.MapResponse'
type: object
summary: Echo
tags:
- HTTP API
@@ -96,10 +99,40 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.RuntimeResponse'
type: object
summary: Runtime information
tags:
- HTTP API
/cache:
post:
consumes:
- application/json
description: writes the posted content in cache and returns the SHA1 hash of
the content
produces:
- application/json
responses:
"200":
description: OK
schema:
$ref: '#/definitions/api.MapResponse'
summary: Save payload in cache
tags:
- HTTP API
/cache/{hash}:
get:
consumes:
- application/json
description: returns the content from cache if key exists
produces:
- application/json
responses:
"200":
description: OK
schema:
type: string
summary: Get payload from cache
tags:
- HTTP API
/chunked/{seconds}:
get:
consumes:
@@ -113,7 +146,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.MapResponse'
type: object
summary: Chunked transfer encoding
tags:
- HTTP API
@@ -129,7 +161,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.MapResponse'
type: object
summary: Delay
tags:
- HTTP API
@@ -145,7 +176,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.ArrayResponse'
type: object
summary: Environment
tags:
- HTTP API
@@ -161,7 +191,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.ArrayResponse'
type: object
summary: Headers
tags:
- HTTP API
@@ -257,7 +286,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.MapResponse'
type: object
summary: Status code
tags:
- HTTP API
@@ -274,7 +302,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.MapResponse'
type: object
summary: Upload file
tags:
- HTTP API
@@ -305,7 +332,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.TokenResponse'
type: object
summary: Generate JWT token
tags:
- HTTP API
@@ -321,7 +347,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.TokenValidationResponse'
type: object
"401":
description: Unauthorized
schema:
@@ -339,7 +364,6 @@ paths:
description: OK
schema:
$ref: '#/definitions/api.MapResponse'
type: object
summary: Version
tags:
- HTTP API
@@ -355,8 +379,10 @@ paths:
description: Accepted
schema:
$ref: '#/definitions/api.MapResponse'
type: object
summary: Echo over websockets
tags:
- HTTP API
schemes:
- http
- https
swagger: "2.0"

41
pkg/api/server.go
View File

@@ -3,11 +3,6 @@ package api
import (
"context"
"fmt"
"github.com/swaggo/swag"
"golang.org/x/net/http2"
"golang.org/x/net/http2/h2c"
"net/http"
_ "net/http/pprof"
"os"
@@ -15,13 +10,17 @@ import (
"sync/atomic"
"time"
"github.com/gomodule/redigo/redis"
"github.com/gorilla/mux"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/spf13/viper"
_ "github.com/stefanprodan/podinfo/pkg/api/docs"
"github.com/stefanprodan/podinfo/pkg/fscache"
httpSwagger "github.com/swaggo/http-swagger"
"github.com/swaggo/swag"
"go.uber.org/zap"
"golang.org/x/net/http2"
"golang.org/x/net/http2/h2c"
)
// @title Podinfo API
@@ -69,12 +68,14 @@ type Config struct {
Unhealthy bool `mapstructure:"unhealthy"`
Unready bool `mapstructure:"unready"`
JWTSecret string `mapstructure:"jwt-secret"`
CacheServer string `mapstructure:"cache-server"`
}
type Server struct {
router *mux.Router
logger *zap.Logger
config *Config
pool *redis.Pool
}
func NewServer(config *Config, logger *zap.Logger) (*Server, error) {
@@ -103,8 +104,10 @@ func (s *Server) registerHandlers() {
s.router.HandleFunc("/readyz/disable", s.disableReadyHandler).Methods("POST")
s.router.HandleFunc("/panic", s.panicHandler).Methods("GET")
s.router.HandleFunc("/status/{code:[0-9]+}", s.statusHandler).Methods("GET", "POST", "PUT").Name("status")
s.router.HandleFunc("/store", s.storeWriteHandler).Methods("POST")
s.router.HandleFunc("/store", s.storeWriteHandler).Methods("POST", "PUT")
s.router.HandleFunc("/store/{hash}", s.storeReadHandler).Methods("GET").Name("store")
s.router.HandleFunc("/cache", s.cacheWriteHandler).Methods("POST", "PUT")
s.router.HandleFunc("/cache/{hash}", s.cacheReadHandler).Methods("GET").Name("cache")
s.router.HandleFunc("/configs", s.configReadHandler).Methods("GET")
s.router.HandleFunc("/token", s.tokenGenerateHandler).Methods("POST")
s.router.HandleFunc("/token/validate", s.tokenValidateHandler).Methods("GET")
@@ -176,6 +179,27 @@ func (s *Server) ListenAndServe(stopCh <-chan struct{}) {
}
}
// start redis connection pool
s.startCachePool()
if s.pool != nil {
ticker := time.NewTicker(30 * time.Second)
go func() {
for {
select {
case <-stopCh:
return
case <-ticker.C:
conn := s.pool.Get()
_, err := redis.String(conn.Do("PING"))
if err != nil {
s.logger.Warn("cache server is offline", zap.Error(err), zap.String("server", s.config.CacheServer))
}
_ = conn.Close()
}
}
}()
}
// run server in background
go func() {
if err := srv.ListenAndServe(); err != http.ErrServerClosed {
@@ -200,6 +224,11 @@ func (s *Server) ListenAndServe(stopCh <-chan struct{}) {
atomic.StoreInt32(&healthy, 0)
atomic.StoreInt32(&ready, 0)
// close cache pool
if s.pool != nil {
_ = s.pool.Close()
}
s.logger.Info("Shutting down HTTP server", zap.Duration("timeout", s.config.HttpServerShutdownTimeout))
// wait for Kubernetes readiness probe to remove this instance from the load balancer