Setup CircleCI and goreleaser

.circleci/config.yml

@@ -0,0 +1,50 @@
+# Golang CircleCI 2.0 configuration file
+#
+# Check https://circleci.com/docs/2.0/language-go/ for more details
+version: 2
+
+defaults: &defaults
+  docker:
+    # specify the version
+    - image: circleci/golang:1.10
+
+    # Specify service dependencies here if necessary
+    # CircleCI maintains a library of pre-built images
+    # documented at https://circleci.com/docs/2.0/circleci-images/
+    # - image: circleci/postgres:9.4
+
+  working_directory: /go/src/github.com/itzg/mc-router
+
+
+jobs:
+  build:
+    <<: *defaults
+    steps:
+      - checkout
+
+      - run: make install-dep
+      - run: make test
+
+  release:
+    <<: *defaults
+    steps:
+      - checkout
+
+      - run: make install-dep
+      - run: docker login -u $DOCKER_USER -p $DOCKER_PASSWORD
+      - run: make release
+
+workflows:
+  version: 2
+  incremental:
+    jobs:
+      - build:
+          filters:
+            tags:
+              ignore: /.*/
+  tagged:
+    jobs:
+      - release:
+          filters:
+            tags:
+              only: /.*/

.goreleaser.yml

@@ -0,0 +1,43 @@
+project_name: mc-router
+release:
+  github:
+    owner: itzg
+    name: mc-router
+brew:
+  install: bin.install "mc-router"
+builds:
+- goos:
+  - linux
+  - darwin
+  - windows
+  goarch:
+  - amd64
+  - "386"
+  goarm:
+  - "6"
+  main: cmd/mc-router/main.go
+  binary: mc-router
+  env:
+    - CGO_ENABLED=0
+archive:
+  format: tar.gz
+  name_template: '{{ .Binary }}_{{.Version}}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{
+    .Arm }}{{ end }}'
+  files:
+  - licence*
+  - LICENCE*
+  - license*
+  - LICENSE*
+  - readme*
+  - README*
+  - changelog*
+  - CHANGELOG*
+snapshot:
+  name_template: SNAPSHOT-{{ .Commit }}
+dockers:
+  - goos: linux
+    goarch: amd64
+    image: itzg/mc-router
+    tag_templates:
+    - "{{.Tag}}"
+    - latest

Dockerfile

@@ -0,0 +1,3 @@
+FROM scratch
+COPY mc-router /
+ENTRYPOINT ["/mc-router"]

Makefile

@@ -0,0 +1,13 @@
+test: vendor
+	go test ./...
+
+vendor:
+	dep ensure -vendor-only
+
+.PHONY: release
+release: vendor
+	curl -sL https://git.io/goreleaser | bash
+
+.PHONY: install-dep
+install-dep:
+	curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh

cmd/mc-router/main.go

@@ -9,6 +9,7 @@ import (
 	"context"
 	"os"
 	"os/signal"
+	"fmt"
 )
 
 var (
@@ -18,11 +19,28 @@ var (
 		String()
 	mappings = kingpin.Flag("mapping", "Mapping of external hostname to internal server host:port").
 		StringMap()
+	versionFlag = kingpin.Flag("version", "Output version and exit").
+		Bool()
 )
 
+var (
+	version = "dev"
+	commit = "none"
+	date = "unknown"
+)
+
+func showVersion()  {
+	fmt.Printf("%v, commit %v, built at %v", version, commit, date)
+}
+
 func main() {
 	kingpin.Parse()
 
+	if *versionFlag {
+		showVersion()
+		os.Exit(0)
+	}
+
 	ctx, cancel := context.WithCancel(context.Background())
 
 	c := make(chan os.Signal, 1)