Add kpod version

Signed-off-by: umohnani8 <umohnani@redhat.com>

Makefile

@@ -14,6 +14,9 @@ ETCDIR_CRIO ?= ${ETCDIR}/crio
 BUILDTAGS := selinux seccomp $(shell hack/btrfs_tag.sh) $(shell hack/libdm_tag.sh)
 BASHINSTALLDIR=${PREFIX}/share/bash-completion/completions
 
+GIT_COMMIT := $(shell git rev-parse --short HEAD)
+BUILD_INFO := $(shell date +%s)
+
 # If GOPATH not specified, use one in the local directory
 ifeq ($(GOPATH),)
 export GOPATH := $(CURDIR)/_output
@@ -25,6 +28,8 @@ GOPKGBASEDIR := $(shell dirname "$(GOPKGDIR)")
 # Update VPATH so make finds .gopathok
 VPATH := $(VPATH):$(GOPATH)
 
+LDFLAGS := -ldflags '-X main.gitCommit=${GIT_COMMIT} -X main.buildInfo=${BUILD_INFO}'
+
 all: binaries crio.conf docs
 
 default: help
@@ -77,7 +82,7 @@ crioctl: .gopathok $(shell hack/find-godeps.sh $(GOPKGDIR) cmd/crioctl $(PROJECT
 	$(GO) build -o $@ $(PROJECT)/cmd/crioctl
 
 kpod: .gopathok $(shell hack/find-godeps.sh $(GOPKGDIR) cmd/kpod $(PROJECT))
-	$(GO) build -o $@ $(PROJECT)/cmd/kpod
+	$(GO) build $(LDFLAGS) -o $@ $(PROJECT)/cmd/kpod
 
 crio.conf: crio
 	./crio --config="" config --default > crio.conf

cmd/kpod/main.go

@@ -7,14 +7,18 @@ import (
 	"github.com/urfave/cli"
 )
 
+//Version of kpod
+const Version string = "0.0.1"
+
 func main() {
 	app := cli.NewApp()
 	app.Name = "kpod"
 	app.Usage = "manage pods and images"
-	app.Version = "0.0.1"
+	app.Version = Version
 
 	app.Commands = []cli.Command{
 		launchCommand,
+		versionCommand,
 	}
 
 	if err := app.Run(os.Args); err != nil {

cmd/kpod/version.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+	"strconv"
+	"time"
+
+	"github.com/urfave/cli"
+)
+
+// Overwritten at build time
+var (
+	gitCommit string
+	buildInfo string
+)
+
+// versionCmd gets and prints version info for version command
+func versionCmd(c *cli.Context) error {
+
+	// Converts unix time from string to int64
+	buildTime, err := strconv.ParseInt(buildInfo, 10, 64)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("Version:      ", Version)
+	fmt.Println("Go Version:   ", runtime.Version())
+	fmt.Println("Git Commit:   ", gitCommit)
+
+	// Prints out the build time in readable format
+	fmt.Println("Built:        ", time.Unix(buildTime, 0).Format(time.ANSIC))
+	fmt.Println("OS/Arch:      ", runtime.GOOS+"/"+runtime.GOARCH)
+
+	return nil
+}
+
+// Cli command to print out the full version of kpod
+var versionCommand = cli.Command{
+	Name:   "version",
+	Usage:  "Display the KPOD Version Information",
+	Action: versionCmd,
+}

completions/bash/kpod

@@ -27,6 +27,14 @@ _kpod_launch() {
      _complete_ "$options_with_args" "$boolean_options"
 }
 
+_kpod_version() {
+     local options_with_args="
+     "
+     local boolean_options="
+     "
+     _complete_ "$options_with_args" "$boolean_options"
+}
+
 _kpod_kpod() {
      local options_with_args="
      "
@@ -36,6 +44,7 @@ _kpod_kpod() {
      "
      commands="
 	launch
+    version
      "
 
      case "$prev" in

docs/kpod-version.1.md

@@ -0,0 +1,33 @@
+% kpod(8) # kpod-version - Simple tool to view version information
+% Dan Walsh
+% SEPTEMBER 2016
+# NAME
+kpod-version - Display the KPOD Version Information
+
+# SYNOPSIS
+**kpod version**
+[**--help**|**-h**]
+
+# DESCRIPTION
+Shows the the following information: Version, Go Version, Git Commit, Build Time,
+OS, and Architecture.
+
+**kpod [GLOBAL OPTIONS]**
+
+**kpod [GLOBAL OPTIONS] version [OPTIONS]**
+
+# GLOBAL OPTIONS
+
+**--help, -h**
+  Print usage statement
+
+# COMMANDS
+
+## version
+Display the KPOD Version Information
+
+# SEE ALSO
+kpod(1), crio(8), crio.conf(5)
+
+# HISTORY
+Dec 2016, Originally compiled by Dan Walsh <dwalsh@redhat.com>

test/helpers.bash

@@ -13,6 +13,8 @@ CRIO_ROOT=${CRIO_ROOT:-$(cd "$INTEGRATION_ROOT/../.."; pwd -P)}
 CRIO_BINARY=${CRIO_BINARY:-${CRIO_ROOT}/cri-o/crio}
 # Path of the crioctl binary.
 OCIC_BINARY=${OCIC_BINARY:-${CRIO_ROOT}/cri-o/crioctl}
+# Path to kpod binary.
+KPOD_BINARY=${KPOD_BINARY:-${CRIO_ROOT}/cri-o/kpod}
 # Path of the conmon binary.
 CONMON_BINARY=${CONMON_BINARY:-${CRIO_ROOT}/cri-o/conmon/conmon}
 # Path of the pause binary.

test/kpod.bats

@@ -0,0 +1,9 @@
+#!/usr/bin/env bats
+
+load helpers
+
+@test "kpod version test" {
+	run ${KPOD_BINARY} version
+	echo "$output"
+	[ "$status" -eq 0 ]
+}