feat: add version command

Signed-off-by: Jae Aeich <jh4official@gmail.com>

Makefile

@@ -1,29 +1,36 @@
+PROJECT_PKG=github.com/goharbor/harbor-cli
+VERSION_PKG=$(PROJECT_PKG)/cmd/harbor/internal/version
 GITCOMMIT := $(shell git rev-parse --short=8 HEAD)
-PROJECT_PKG = github.com/goharbor/harbor-cli
-RELEASE_CHANNEL="edge"
-LDFLAGS = "-w -s -X $(PROJECT_PKG)/version.GitCommit=$(GITCOMMIT) -X $(PROJECT_PKG)/version.ReleaseChannel=$(RELEASE_CHANNEL)"
+GO_VERSION := $(shell go version | cut -c 14- | cut -d' ' -f1)
+BUILD_TIME := "$(shell date +'%a_%b_%d_%T_%Y')"
+RELEASE_CHANNEL=edge
+LDFLAGS := -w -s \
+           -X $(VERSION_PKG).GitCommit=$(GITCOMMIT) \
+           -X $(VERSION_PKG).GoVersion=$(GO_VERSION) \
+           -X $(VERSION_PKG).BuildTime=$(BUILD_TIME) \
+           -X $(VERSION_PKG).ReleaseChannel=$(RELEASE_CHANNEL)
 ARCH := amd64
 GO_EXE = go
 
 make: 
 	gofmt -l -s -w .
-	go build -ldflags=${LDFLAGS} -o harbor cmd/harbor/main.go
+	go build -v -ldflags "${LDFLAGS}" -o harbor cmd/harbor/main.go
 
 windows:
-	go build -ldflags=${LDFLAGS} -o harbor.exe cmd/harbor/main.go
+	go build -ldflags "${LDFLAGS}" -o harbor.exe cmd/harbor/main.go
 
 .PHONY: build-win-amd64
 build-win-amd64:  ## build for windows amd64
-	CGO_ENABLED=0 GOARCH=$(ARCH) GOOS=windows $(GO_EXE) build -v --ldflags=$(LDFLAGS) \
+	CGO_ENABLED=0 GOARCH=$(ARCH) GOOS=windows $(GO_EXE) build -v --ldflags "$(LDFLAGS)" \
 		-o bin/harbor-windows-$(ARCH).exe ./cmd/harbor/main.go
 .PHONY: build-linux-amd64
 build-linux-amd64:  ## build for linux amd64
-	CGO_ENABLED=0 GOARCH=$(ARCH) GOOS=linux $(GO_EXE) build -v --ldflags=$(LDFLAGS) \
+	CGO_ENABLED=0 GOARCH=$(ARCH) GOOS=linux $(GO_EXE) build -v --ldflags "$(LDFLAGS)" \
 		-o bin/harbor-linux-$(ARCH) ./cmd/harbor/main.go
 
 .PHONY: build-darwin-amd64
 build-darwin-amd64:  ## build for darwin amd64
-	CGO_ENABLED=0 GOARCH=$(ARCH) GOOS=darwin $(GO_EXE) build -v --ldflags=$(LDFLAGS) \
+	CGO_ENABLED=0 GOARCH=$(ARCH) GOOS=darwin $(GO_EXE) build -v --ldflags "$(LDFLAGS)" \
 		-o bin/harbor-darwin-$(ARCH) ./cmd/harbor/main.go
 
 .PHONY: clean

cmd/harbor/internal/version/version.go

@@ -1,10 +1,34 @@
 package version
 
+import "runtime/debug"
+
 var (
-	Version   = "0.1.0"
-	GitCommit = ""
-)
+	Version        = "0.1.0"
+	GitCommit      = ""
+	BuildTime      = ""
+	ReleaseChannel = "dev"
+	GoVersion      = ""
+	OS             = func() string {
+		if info, ok := debug.ReadBuildInfo(); ok {
+			for _, setting := range info.Settings {
+				if setting.Key == "GOOS" {
+					return setting.Value
+				}
+			}
+		}
 
-func GetVersion() string {
-	return Version
-}
+		return ""
+	}
+	Arch = func() string {
+		if info, ok := debug.ReadBuildInfo(); ok {
+			for _, setting := range info.Settings {
+				if setting.Key == "GOARCH" {
+					return setting.Value
+				}
+			}
+		}
+
+		return ""
+	}
+	System = OS() + "/" + Arch()
+)

cmd/harbor/root/cmd.go

@@ -1,12 +1,31 @@
 package root
 
 import (
+	"fmt"
+
+	"github.com/goharbor/harbor-cli/cmd/harbor/internal/version"
 	"github.com/goharbor/harbor-cli/cmd/harbor/root/project"
 	"github.com/goharbor/harbor-cli/cmd/harbor/root/registry"
 	"github.com/goharbor/harbor-cli/pkg/constants"
 	"github.com/spf13/cobra"
 )
 
+// versionCommand creates a new `harbor version` command
+func versionCommand() *cobra.Command {
+	return &cobra.Command{
+		Use:   "version",
+		Short: "get Harbor CLI version",
+		Long:  `Get Harbor CLI version, git commit, go version, build time, release channel, os/arch, etc.`,
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Printf("Version:      %s\n", version.Version)
+			fmt.Printf("Go version:   %s\n", version.GoVersion)
+			fmt.Printf("Git commit:   %s\n", version.GitCommit)
+			fmt.Printf("Built:        %s\n", version.BuildTime)
+			fmt.Printf("OS/Arch:      %s\n", version.System)
+		},
+	}
+}
+
 // newGetCommand creates a new `harbor get` command
 func newGetCommand() *cobra.Command {
 	cmd := &cobra.Command{
@@ -84,6 +103,7 @@ func New() *cobra.Command {
 	}
 
 	cmd.AddCommand(
+		versionCommand(),
 		LoginCommand(),
 		newGetCommand(),
 		newListCommand(),