Merge pull request #56 from OpenCHAMI/version

Add `version` command to show `magellan`'s current version

Makefile

@@ -12,6 +12,12 @@ ifndef VERSION
 $(error VERSION is not set.  Please review and copy config.env.default to config.env and try again)
 endif
 
+ifndef BUILD
+$(error BUILD is not set.  Please review and copy config.env.default to config.env and try again)
+endif
+
+LDFLAGS="-s -X=$(GIT)main.commit=$(BUILD) -X=$(GIT)main.version=$(VERSION) -X=$(GIT)main.date=$(shell date +%Y-%m-%d:%H:%M:%S)"
+
 SHELL := /bin/bash
 GOPATH ?= $(shell echo $${GOPATH:-~/go})
 
@@ -54,8 +60,8 @@ release: ## goreleaser build
 	$(GOPATH)/bin/goreleaser build --clean --single-target --snapshot
 
 .PHONY: build
-build: ## goreleaser build
-	go build --tags=all
+build: ## go build
+	go build -v --tags=all -ldflags=$(LDFLAGS) -o $(NAME) main.go
 
 .PHONY: docker
 container: ## docker build

cmd/version.go

@@ -0,0 +1,40 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+var (
+	version string
+	commit  string
+	date    string
+	output  string
+)
+
+var versionCmd = &cobra.Command{
+	Use: "version",
+	Run: func(cmd *cobra.Command, args []string) {
+		if cmd.Flag("commit").Value.String() == "true" {
+			output = commit
+			if date != "" {
+				output += " built @ " + date
+			}
+			fmt.Println(output)
+		} else {
+			fmt.Println(version)
+		}
+	},
+}
+
+func init() {
+	versionCmd.Flags().Bool("commit", false, "show the version commit")
+	rootCmd.AddCommand(versionCmd)
+}
+
+func SetVersionInfo(buildVersion string, buildCommit string, buildDate string) {
+	version = buildVersion
+	commit = buildCommit
+	date = buildDate
+}

config.env

@@ -2,4 +2,4 @@
 
 NAME=magellan
 VERSION=$(shell git describe --tags --abbrev=0)
-
+BUILD=$(shell git rev-parse --short HEAD)

main.go

@@ -4,6 +4,13 @@ import (
 	"github.com/OpenCHAMI/magellan/cmd"
 )
 
+var (
+	version string
+	commit  string
+	date    string
+)
+
 func main() {
+	cmd.SetVersionInfo(version, commit, date)
 	cmd.Execute()
 }