add bin check

.gitignore

@@ -1,3 +1,3 @@
 *~
 bin
-/.idea
+/.idea

Makefile

@@ -2,6 +2,10 @@ VERSION=$(shell git describe --always --match "v*")
 GOOS=$(shell go env GOOS)
 GOARCH=$(shell go env GOARCH)
 
+BUILD_TIME=$(shell date +'%Y-%m-%d_%T')
+BRANCH=$(shell git rev-parse --abbrev-ref HEAD)
+GIT_COMMIT=$(shell git log -n1 --pretty='%h')
+
 # Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set)
 ifeq (,$(shell go env GOBIN))
 GOBIN=$(shell go env GOPATH)/bin
@@ -16,10 +20,8 @@ unit-tests:
 	CGO_ENABLED=0 go test -v ./cmd/...
 
 # Build wego binary
-# wego: fmt vet unit-tests
-wego:
-	CGO_ENABLED=0 go build -o bin/$(BINARY_NAME) cmd/wego/*.go
-
+wego: fmt vet unit-tests
+	go build -ldflags "-X github.com/weaveworks/weave-gitops/cmd/wego/version.BuildTime=$(BUILD_TIME) -X github.com/weaveworks/weave-gitops/cmd/wego/version.Branch=$(BRANCH) -X github.com/weaveworks/weave-gitops/cmd/wego/version.GitCommit=$(GIT_COMMIT)" -o bin/wego cmd/wego/*.go
 # Clean up images and binaries
 clean:
 	rm -f bin/wego

cmd/wego/main.go

@@ -2,9 +2,10 @@ package main
 
 import (
 	"fmt"
-	log "github.com/sirupsen/logrus"
 	"os"
 
+	log "github.com/sirupsen/logrus"
+
 	"github.com/spf13/cobra"
 	"github.com/weaveworks/weave-gitops/cmd/wego/version"
 )
@@ -33,6 +34,7 @@ func configureLogger() {
 func main() {
 	rootCmd.PersistentFlags().BoolVarP(&options.verbose, "verbose", "v", false, "Enable verbose output")
 	rootCmd.AddCommand(version.Cmd)
+
 	if err := rootCmd.Execute(); err != nil {
 		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
 		os.Exit(1)

cmd/wego/version/cmd.go

@@ -2,43 +2,35 @@ package version
 
 import (
 	"fmt"
-	"os"
+	log "github.com/sirupsen/logrus"
+	"github.com/weaveworks/go-checkpoint"
 
 	"github.com/spf13/cobra"
 )
 
+// The current wego version
+var Version = "v0.0.0"
+var GitCommit = ""
+var Branch = ""
+var BuildTime = ""
+
 var Cmd = &cobra.Command{
 	Use:   "version",
 	Short: "Display wego version",
 	Run:   runCmd,
 }
 
-// exitOnError prints an error to stderr and exit; if error is nil, does nothing
-func exitOnError(err interface{}, msgs ...string) {
-	if err == nil {
-		return
-	}
-	if len(msgs) > 0 {
-		fmt.Fprintf(os.Stderr, "Error: %s\n", msgs[0])
-	} else {
-		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
-	}
-	os.Exit(1)
-}
-
 func runCmd(cmd *cobra.Command, args []string) {
-	releases, err := GetReleases()
-	exitOnError(err)
-
-	latestRelease, err := ExtractLatestRelease(releases)
-	exitOnError(err, fmt.Sprintf("Failed to extract version information; local version is: %s\n", Version))
-
-	lt, err := LessThan(Version, latestRelease)
-	exitOnError(err, fmt.Sprintf("Failed comparing versions; local version is: %s\n", Version))
-
-	if lt {
-		fmt.Printf("Current version is: %s. A newer version (%s) is available.\n", Version, latestRelease)
+	if checkResponse, err := checkpoint.Check(&checkpoint.CheckParams{
+		Product: "weave-gitops",
+		Version: Version,
+	}); err == nil && checkResponse.Outdated {
+		log.Infof("wego version %s is available; please update at %s",
+			checkResponse.CurrentVersion, checkResponse.CurrentDownloadURL)
 	} else {
-		fmt.Println(Version)
+		fmt.Println("Version", Version)
+		fmt.Println("GitCommit:", GitCommit)
+		fmt.Println("BuildTime:", BuildTime)
+		fmt.Println("Branch:", Branch)
 	}
 }

go.mod

@@ -3,10 +3,12 @@ module github.com/weaveworks/weave-gitops
 go 1.16
 
 require (
-	github.com/blang/semver v3.5.1+incompatible // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/kr/pretty v0.2.0 // indirect
 	github.com/sirupsen/logrus v1.2.0
 	github.com/spf13/cobra v1.1.3
 	github.com/stretchr/testify v1.7.0
-	k8s.io/apimachinery v0.20.5
+	github.com/weaveworks/go-checkpoint v0.0.0-20170503165305-ebbb8b0518ab
+	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 // indirect
+	golang.org/x/sys v0.0.0-20201112073958-5cba982894dd // indirect
+	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 )