Add version flag

.goreleaser.yml

@@ -32,6 +32,15 @@ archives:
     format_overrides:
     - goos: windows
       format: zip
+brews:
+  - github:
+      owner: mercury2269
+      name: homebrew-tap
+    folder: Formula
+    homepage:  https://github.com/mercury2269/sqsmover
+    description: AWS SQS Message mover.
+    test: |
+      system "#{bin}/sqsmover -v"
 checksum:
   name_template: 'checksums.txt'
 snapshot:

main.go

@@ -16,20 +16,33 @@ import (
 	"gopkg.in/alecthomas/kingpin.v2"
 )
 
+// nolint: gochecknoglobals
+var (
+	version = "dev"
+	commit  = ""
+	date    = ""
+	builtBy = ""
+)
+
 var (
 	sourceQueue      = kingpin.Flag("source", "Source queue to move messages from").Short('s').Required().String()
 	destinationQueue = kingpin.Flag("destination", "Destination queue to move messages to").Short('d').Required().String()
 	region           = kingpin.Flag("region", "AWS Region for source and destination queues").Short('r').Default("us-west-2").String()
 	profile          = kingpin.Flag("profile", "Use a specific profile from your credential file.").Short('p').Default("").String()
 )
 
+
 func main() {
 	log.SetHandler(cli.Default)
 
 	fmt.Println()
 	defer fmt.Println()
 
+	kingpin.Version(buildVersion(version, commit, date, builtBy))
 	kingpin.UsageTemplate(kingpin.CompactUsageTemplate)
+	kingpin.CommandLine.VersionFlag.Short('v')
+	kingpin.CommandLine.HelpFlag.Short('h')
+
 	kingpin.Parse()
 
 	sess, err := session.NewSessionWithOptions(
@@ -231,3 +244,17 @@ func moveMessages(sourceQueueUrl string, destinationQueueUrl string, svc *sqs.SQ
 		render(b.String())
 	}
 }
+
+func buildVersion(version, commit, date, builtBy string) string {
+	var result = fmt.Sprintf("version: %s", version)
+	if commit != "" {
+		result = fmt.Sprintf("%s\ncommit: %s", result, commit)
+	}
+	if date != "" {
+		result = fmt.Sprintf("%s\nbuilt at: %s", result, date)
+	}
+	if builtBy != "" {
+		result = fmt.Sprintf("%s\nbuilt by: %s", result, builtBy)
+	}
+	return result
+}