Fixes #17

Allows users to prin ingress-perf version

Signed-off-by: Krishna Harsha Voora <[email protected]>

README.md

@@ -42,6 +42,7 @@ Available Commands:
   completion  Generate the autocompletion script for the specified shell
   help        Help about any command
   run         Run benchmark
+  help        Print the version
 
 Flags:
   -h, --help   help for this command

cmd/ingress-perf.go

@@ -15,7 +15,10 @@
 package main
 
 import (
+	"bytes"
 	"fmt"
+	"os/exec"
+	"strings"
 
 	"github.com/cloud-bulldozer/go-commons/indexers"
 	"github.com/cloud-bulldozer/ingress-perf/pkg/config"
@@ -86,8 +89,47 @@ func run() *cobra.Command {
 	return cmd
 }
 
+func getGitInfo() (string, string) {
+
+	// Get the last released tag info
+	cmdTag := exec.Command("git", "describe", "--tags", "--abbrev=0")
+	var outTag bytes.Buffer
+	cmdTag.Stdout = &outTag
+	errTag := cmdTag.Run()
+	gitTag := "Unknown"
+	if errTag == nil {
+		gitTag = strings.TrimSpace(outTag.String())
+	}
+
+	// Get the last Commit Hash
+	cmdCommit := exec.Command("git", "rev-parse", "--short", "HEAD")
+	var outCommit bytes.Buffer
+	cmdCommit.Stdout = &outCommit
+	errCommit := cmdCommit.Run()
+	gitCommitHash := "Unknown"
+	if errCommit == nil {
+		gitCommitHash = strings.TrimSpace(outCommit.String())
+	}
+
+	return gitTag, gitCommitHash
+}
+
+func version() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:           "version",
+		Short:         "Print the version number ",
+		SilenceErrors: true,
+		SilenceUsage:  true,
+		Run: func(cmd *cobra.Command, args []string) {
+			gitTag, gitCommitHash := getGitInfo()
+			fmt.Printf("😎 Ingress-perf version is %s@%s \n", gitTag, gitCommitHash)
+		},
+	}
+	return cmd
+}
+
 func main() {
-	cmd.AddCommand(run())
+	cmd.AddCommand(run(), version())
 	if err := cmd.Execute(); err != nil {
 		log.Fatal(err.Error())
 	}