Merge pull request #123 from nirmata/119_version

Show version info for each release

.gitignore

@@ -2,3 +2,4 @@ certs
 Gopkg.lock
 .vscode
 gh-pages/public
+_output

Makefile

@@ -1,10 +1,24 @@
 .DEFAULT_GOAL: build
+
+
+# The CLI binary to build
+BIN ?= kyverno
+
+GIT_VERSION := $(shell git describe --dirty --always --tags)
+GIT_BRANCH := $(shell git branch | grep \* | cut -d ' ' -f2)
+GIT_HASH := $(GIT_BRANCH)/$(shell git log -1 --pretty=format:"%H")
+TIMESTAMP := $(shell date '+%Y-%m-%d_%I:%M:%S%p')
+
 PACKAGE ?=github.com/nirmata/kyverno
 MAIN ?=$(PACKAGE)
-LD_FLAGS ="-s -w"
 
-REPO=nirmata/kyverno
-TAG=0.1
+LD_FLAGS="-s -w -X $(PACKAGE)/pkg/version.BuildVersion=$(GIT_VERSION) -X $(PACKAGE)/pkg/version.BuildHash=$(GIT_HASH) -X $(PACKAGE)/pkg/version.BuildTime=$(TIMESTAMP)"
+
+REPO=registry-v2.nirmata.io/nirmata/kyverno
+IMAGE_TAG=$(GIT_VERSION)
+
+GOOS ?= $(shell go env GOOS)
+OUTPUT=$(shell pwd)/_output/cli/$(BIN)
 
 build:
 	GOOS=linux go build -ldflags=$(LD_FLAGS) $(MAIN)
@@ -12,12 +26,22 @@ build:
 local:
 	go build -ldflags=$(LD_FLAGS) $(MAIN)
 
+cli: cli-dirs
+	GOOS=$(GOOS) \
+    go build \
+    -o $(OUTPUT) \
+    -ldflags $(LD_FLAGS) \
+    $(PACKAGE)/cmd/$(BIN)
+
+cli-dirs:
+	@mkdir -p _output/cli
+
 image:
-	docker build -t $(REPO):$(TAG) .
-	docker tag $(REPO):$(TAG) $(REPO):latest
+	docker build -t $(REPO):$(IMAGE_TAG) .
+	docker tag $(REPO):$(IMAGE_TAG) $(REPO):latest
 
 push:
-	docker push $(REPO):$(TAG)
+	docker push $(REPO):$(IMAGE_TAG)
 	docker push $(REPO):latest
 
 clean:

init.go

@@ -5,11 +5,18 @@ import (
 
 	client "github.com/nirmata/kyverno/pkg/dclient"
 	tls "github.com/nirmata/kyverno/pkg/tls"
-
+	"github.com/nirmata/kyverno/pkg/version"
 	rest "k8s.io/client-go/rest"
 	clientcmd "k8s.io/client-go/tools/clientcmd"
 )
 
+func printVersionInfo() {
+	v := version.GetVersion()
+	log.Printf("Kyverno version: %s\n", v.BuildVersion)
+	log.Printf("Kyverno BuildHash: %s\n", v.BuildHash)
+	log.Printf("Kyverno BuildTime: %s\n", v.BuildTime)
+}
+
 func createClientConfig(kubeconfig string) (*rest.Config, error) {
 	if kubeconfig == "" {
 		log.Printf("Using in-cluster configuration")

main.go

@@ -18,6 +18,8 @@ var (
 )
 
 func main() {
+	printVersionInfo()
+
 	clientConfig, err := createClientConfig(kubeconfig)
 	if err != nil {
 		log.Fatalf("Error building kubeconfig: %v\n", err)

pkg/kyverno/cmd.go

@@ -5,6 +5,7 @@ import (
 	"os"
 
 	"github.com/nirmata/kyverno/pkg/kyverno/apply"
+	"github.com/nirmata/kyverno/pkg/kyverno/version"
 	"github.com/spf13/cobra"
 )
 
@@ -21,5 +22,6 @@ func NewKyvernoCommand(in io.Reader, out, errout io.Writer) *cobra.Command {
 	}
 
 	cmds.AddCommand(apply.NewCmdApply(in, out, errout))
+	cmds.AddCommand(version.NewCmdVersion(out))
 	return cmds
 }

pkg/kyverno/version/version.go

@@ -0,0 +1,29 @@
+package version
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/nirmata/kyverno/pkg/version"
+	"github.com/spf13/cobra"
+)
+
+// NewCmdVersion is a command to display the build version
+func NewCmdVersion(cmdOut io.Writer) *cobra.Command {
+
+	versionCmd := &cobra.Command{
+		Use:   "version",
+		Short: "",
+		Run: func(cmd *cobra.Command, args []string) {
+			showVersion()
+		},
+	}
+
+	return versionCmd
+}
+
+func showVersion() {
+	fmt.Printf("Version: %s\n", version.BuildVersion)
+	fmt.Printf("Time: %s\n", version.BuildTime)
+	fmt.Printf("Git commit ID: %s\n", version.BuildHash)
+}

pkg/version/version.go

@@ -0,0 +1,24 @@
+package version
+
+// These fields are set during an official build
+var (
+	BuildVersion = "--"
+	BuildHash    = "--"
+	BuildTime    = "--"
+)
+
+// VersionInfo gets json info about the agent version
+type VersionInfo struct {
+	BuildVersion string
+	BuildHash    string
+	BuildTime    string
+}
+
+// GetVersion gets the current agent version
+func GetVersion() *VersionInfo {
+	return &VersionInfo{
+		BuildVersion: BuildVersion,
+		BuildHash:    BuildHash,
+		BuildTime:    BuildTime,
+	}
+}