Adds goreleaser

.goreleaser.yml

@@ -7,5 +7,10 @@ builds:
       - darwin
     goarch:
       - amd64
+    flags: -tags netgo
 archive:
   format: binary
+release:
+  github:
+    owner: jetstack-experimental
+    name: vault-unsealer

Makefile

@@ -9,6 +9,9 @@ BUILD_IMAGE_NAME := golang:1.8
 
 GOPATH ?= /tmp/go
 
+CI_COMMIT_TAG ?= unknown
+CI_COMMIT_SHA ?= unknown
+
 help:
 	# all 		- runs verify, build and docker_build targets
 	# test 		- runs go_test target
@@ -56,7 +59,7 @@ docker_push: docker_build
 go_verify: go_fmt go_vet go_test
 
 go_build:
-	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -tags netgo -ldflags '-w' -o vault-unsealer_linux_amd64
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -tags netgo -ldflags '-w -X main.version=$(CI_COMMIT_TAG) -X main.commit=$(CI_COMMIT_SHA) -X main.date=$(shell date -u +%Y-%m-%d_%H:%M:%S)' -o vault-unsealer_linux_amd64
 
 go_test:
 	go test $$(go list ./... | grep -v '/vendor/')

cmd/version.go

@@ -0,0 +1,41 @@
+package cmd
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+var Version struct {
+	Version   string
+	BuildDate string
+	Commit    string
+}
+
+var AppName string = "vault-unsealer"
+
+func init() {
+	RootCmd.AddCommand(versionCmd)
+}
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: fmt.Sprint("Print the version number of ", AppName),
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Printf("%s", AppName)
+
+		v := reflect.ValueOf(Version)
+
+		for i := 0; i < v.NumField(); i++ {
+			fmt.Printf(
+				" %s: %s",
+				strings.ToLower(v.Type().Field(i).Name),
+				v.Field(i).Interface(),
+			)
+		}
+
+		fmt.Println("")
+	},
+}

main.go

@@ -6,7 +6,16 @@ import (
 	"github.com/jetstack-experimental/vault-unsealer/cmd"
 )
 
+var (
+	version string = "dev"
+	commit  string = "unknown"
+	date    string = "unknown"
+)
+
 func main() {
 	flag.Parse()
+	cmd.Version.Version = version
+	cmd.Version.Commit = commit
+	cmd.Version.BuildDate = date
 	cmd.Execute()
 }