Merge pull request #1 from vouch-opensource/init

initial code

.gitignore

@@ -0,0 +1,3 @@
+dist
+bin
+.bin

Dockerfile

@@ -0,0 +1,31 @@
+ARG GO_VERSION=1.17
+
+# FIRST STAGE: build
+FROM golang:${GO_VERSION}-alpine AS builder
+
+# force the go compiler to use modules 
+ENV GO111MODULE=on
+
+# install dependencies rewuire to build
+RUN apk add --update make git gcc libc-dev
+
+WORKDIR /app
+
+# download dependencies
+COPY ./go.mod ./go.sum ./
+RUN go mod download
+
+COPY ./ ./
+
+# compile binary
+RUN make build
+
+# FINAL STAGE: run application
+FROM alpine:latest  
+
+# dev env always default
+ENV ENV=development
+
+COPY --from=builder /app /app
+
+ENTRYPOINT ["/app/bin/containerd-healthcheck"]

Makefile

@@ -0,0 +1,62 @@
+BIN_NAME 	= containerd-healthcheck
+IMAGE_NAME 	= vouchio/containerd-healthcheck
+ROOT_DIR 	= $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+BIN_DIR 	= $(ROOT_DIR)/bin
+BIN_PATH 	= $(ROOT_DIR)/bin/$(BIN_NAME)
+CMD_PATH 	= $(ROOT_DIR)/cmd/$(BIN_NAME)
+VERSION 	= $(shell cat $(ROOT_DIR)/VERSION)
+GIT_BRANCH 	= $(shell git rev-parse --abbrev-ref HEAD)
+GIT_COMMIT 	= $(shell git rev-parse HEAD)
+BUILD_DATE 	= $(shell date +'%Y-%m-%dT%H:%M:%SZ')
+LDFLAGS 	= "-X main.commit=$(GIT_COMMIT) -X main.version=$(VERSION) -X main.date=$(BUILD_DATE)"
+PORT 		= "9891"
+ENV 		= development
+
+export PATH := $(PATH):$(ROOT_DIR)/.bin
+
+.PHONY: tidy
+tidy:
+	@(go mod tidy)
+
+.PHONY: setup
+setup: tidy
+	@(./scripts/install-go-release.sh "goreleaser/goreleaser")
+
+.PHONY: build
+build:
+	@(echo "-> Compiling packages")
+	GOOS=linux go build -ldflags $(LDFLAGS) -o $(BIN_PATH) $(CMD_PATH)/main.go
+	@(echo "-> Binary created at '$(BIN_PATH)'")
+
+.PHONY: run
+run:
+	@($(BIN_PATH) --addr ":$(PORT)" --env $(ENV))
+
+.PHONY: docker-build
+docker-build:
+	@(docker build -t $(IMAGE_NAME):$(VERSION) .)
+
+.PHONY: docker-push
+docker-push:
+	@(docker push $(IMAGE_NAME):$(VERSION))
+
+.PHONY: docker-run
+docker-run:
+	@(docker run -p 8080:$(PORT) -e "ENV=$(ENV)" -it $(BIN_NAME):latest)
+
+.PHONY: release
+release:
+ifeq ($(GIT_BRANCH),master)
+	@(echo "-> Creating tag '$(VERSION)'")
+	@(git tag $(VERSION))
+	@(echo "-> Pushing tag '$(VERSION)'")
+	@(git push origin $(VERSION))
+	@(echo "-> Releasing to remote repository")
+	@(goreleaser --rm-dist)
+else
+	@echo "You need to be in branch master"
+endif
+
+.PHONY: release-snapshot
+release-snapshot:
+	@(goreleaser release --skip-publish --snapshot --rm-dist)

VERSION

@@ -0,0 +1 @@
+0.2

cmd/containerd-healthcheck/main.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"containerdhealthcheck/internal/models"
+	"containerdhealthcheck/internal/server"
+	"fmt"
+	"os"
+
+	flag "github.com/spf13/pflag"
+
+	cleanenv "github.com/ilyakaznacheev/cleanenv"
+	"github.com/sirupsen/logrus"
+)
+
+var version, commit, date string
+
+func main() {
+
+	var yamlConfig models.YAMLConfig
+
+	// Config
+	env := flag.StringP("env", "e", "development", "Application environment")
+	addr := flag.StringP("addr", "a", ":9434", "HTTP address for prometheus endpoint")
+	configPath := flag.StringP("config", "c", "config.yml", "Path to configuration file")
+	// Version
+	versionOpt := flag.BoolP("version", "v", false, "Print app version")
+
+	flag.Parse()
+
+	if *versionOpt {
+		fmt.Println(version)
+		os.Exit(0)
+	}
+
+	logger := logrus.New()
+	logger.SetFormatter(&logrus.JSONFormatter{})
+
+	appBuildInfo := models.BuildInfo{
+		Version: version,
+		Commit:  commit,
+		Date:    date,
+	}
+
+	serverConfig := models.ServerConfig{
+		Env:  *env,
+		Addr: *addr,
+	}
+
+	// read configuration from the file and environment variables
+	if err := cleanenv.ReadConfig(*configPath, &yamlConfig); err != nil {
+		logger.Fatal(err)
+	}
+
+	err := cleanenv.ReadConfig(*configPath, &yamlConfig)
+
+	if err != nil {
+		logger.Fatal(err)
+	}
+
+	server, err := server.NewApp(serverConfig, yamlConfig, appBuildInfo, logger)
+
+	if err != nil {
+		logger.Fatal("unexpected error: ", err)
+	}
+
+	server.Run()
+
+}

config.yml

@@ -0,0 +1,21 @@
+---
+containerd:
+  socket: /run/containerd/containerd.sock
+  namespace: services.linuxkit
+checks:
+  - container_task: hello-world-api
+    http:
+      url: http://127.0.0.1:3000
+      expected_body: Hello
+    timeout: 1
+    execution_period: 4
+    initial_delay: 10
+    restart_delay: 10
+    threshold: 3
+  - container_task: google
+    http:
+      url: https://www.google.com
+    timeout: 1
+    execution_period: 2
+    initial_delay: 2
+    threshold: 3

go.mod

@@ -0,0 +1,15 @@
+module containerdhealthcheck
+
+go 1.16
+
+require (
+	contrib.go.opencensus.io/exporter/prometheus v0.4.0
+	github.com/AppsFlyer/go-sundheit v0.5.0
+	github.com/AppsFlyer/go-sundheit/opencensus v0.0.0-20210815135105-b87b5e51e25b
+	github.com/containerd/containerd v1.5.5
+	github.com/ilyakaznacheev/cleanenv v1.2.5
+	github.com/prometheus/client_golang v1.11.0
+	github.com/sirupsen/logrus v1.8.1
+	github.com/spf13/pflag v1.0.5
+	go.opencensus.io v0.23.0
+)