Add flux version to bootstrap commit messages

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

cmd/flux/bootstrap.go

@@ -126,6 +126,14 @@ func bootstrapValidate() error {
 }
 
 func generateInstallManifests(targetPath, namespace, tmpDir string, localManifests string) (string, error) {
+	if bootstrapArgs.version == install.MakeDefaultOptions().Version {
+		version, err := install.GetLatestVersion()
+		if err != nil {
+			return "", err
+		}
+		bootstrapArgs.version = version
+	}
+
 	opts := install.Options{
 		BaseURL:                localManifests,
 		Version:                bootstrapArgs.version,

cmd/flux/bootstrap_github.go

@@ -125,13 +125,25 @@ func bootstrapGitHubCmdRun(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	usedPath, bootstrapPathDiffers := checkIfBootstrapPathDiffers(ctx, kubeClient, rootArgs.namespace, filepath.ToSlash(githubArgs.path.String()))
+	usedPath, bootstrapPathDiffers := checkIfBootstrapPathDiffers(
+		ctx,
+		kubeClient,
+		rootArgs.namespace,
+		filepath.ToSlash(githubArgs.path.String()),
+	)
 
 	if bootstrapPathDiffers {
 		return fmt.Errorf("cluster already bootstrapped to %v path", usedPath)
 	}
 
-	repository, err := git.NewRepository(githubArgs.repository, githubArgs.owner, githubArgs.hostname, ghToken, "flux", githubArgs.owner+"@users.noreply.github.com")
+	repository, err := git.NewRepository(
+		githubArgs.repository,
+		githubArgs.owner,
+		githubArgs.hostname,
+		ghToken,
+		"flux",
+		githubArgs.owner+"@users.noreply.github.com",
+	)
 	if err != nil {
 		return err
 	}
@@ -190,13 +202,22 @@ func bootstrapGitHubCmdRun(cmd *cobra.Command, args []string) error {
 
 	// generate install manifests
 	logger.Generatef("generating manifests")
-	installManifest, err := generateInstallManifests(githubArgs.path.String(), rootArgs.namespace, tmpDir, bootstrapArgs.manifestsPath)
+	installManifest, err := generateInstallManifests(
+		githubArgs.path.String(),
+		rootArgs.namespace,
+		tmpDir,
+		bootstrapArgs.manifestsPath,
+	)
 	if err != nil {
 		return err
 	}
 
 	// stage install manifests
-	changed, err = repository.Commit(ctx, path.Join(githubArgs.path.String(), rootArgs.namespace), "Add manifests")
+	changed, err = repository.Commit(
+		ctx,
+		path.Join(githubArgs.path.String(), rootArgs.namespace),
+		fmt.Sprintf("Add flux %s components manifests", bootstrapArgs.version),
+	)
 	if err != nil {
 		return err
 	}
@@ -270,13 +291,25 @@ func bootstrapGitHubCmdRun(cmd *cobra.Command, args []string) error {
 
 	// configure repo synchronization
 	logger.Actionf("generating sync manifests")
-	syncManifests, err := generateSyncManifests(repoURL, bootstrapArgs.branch, rootArgs.namespace, rootArgs.namespace, filepath.ToSlash(githubArgs.path.String()), tmpDir, githubArgs.interval)
+	syncManifests, err := generateSyncManifests(
+		repoURL,
+		bootstrapArgs.branch,
+		rootArgs.namespace,
+		rootArgs.namespace,
+		filepath.ToSlash(githubArgs.path.String()),
+		tmpDir,
+		githubArgs.interval,
+	)
 	if err != nil {
 		return err
 	}
 
 	// commit and push manifests
-	if changed, err = repository.Commit(ctx, path.Join(githubArgs.path.String(), rootArgs.namespace), "Add manifests"); err != nil {
+	if changed, err = repository.Commit(
+		ctx,
+		path.Join(githubArgs.path.String(), rootArgs.namespace),
+		fmt.Sprintf("Add flux %s sync manifests", bootstrapArgs.version),
+	); err != nil {
 		return err
 	} else if changed {
 		if err := repository.Push(ctx); err != nil {

cmd/flux/bootstrap_gitlab.go

@@ -131,7 +131,14 @@ func bootstrapGitLabCmdRun(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("cluster already bootstrapped to %v path", usedPath)
 	}
 
-	repository, err := git.NewRepository(gitlabArgs.repository, gitlabArgs.owner, gitlabArgs.hostname, glToken, "flux", gitlabArgs.owner+"@users.noreply.gitlab.com")
+	repository, err := git.NewRepository(
+		gitlabArgs.repository,
+		gitlabArgs.owner,
+		gitlabArgs.hostname,
+		glToken,
+		"flux",
+		gitlabArgs.owner+"@users.noreply.gitlab.com",
+	)
 	if err != nil {
 		return err
 	}
@@ -169,13 +176,22 @@ func bootstrapGitLabCmdRun(cmd *cobra.Command, args []string) error {
 
 	// generate install manifests
 	logger.Generatef("generating manifests")
-	installManifest, err := generateInstallManifests(gitlabArgs.path.String(), rootArgs.namespace, tmpDir, bootstrapArgs.manifestsPath)
+	installManifest, err := generateInstallManifests(
+		gitlabArgs.path.String(),
+		rootArgs.namespace,
+		tmpDir,
+		bootstrapArgs.manifestsPath,
+	)
 	if err != nil {
 		return err
 	}
 
 	// stage install manifests
-	changed, err = repository.Commit(ctx, path.Join(gitlabArgs.path.String(), rootArgs.namespace), "Add manifests")
+	changed, err = repository.Commit(
+		ctx,
+		path.Join(gitlabArgs.path.String(), rootArgs.namespace),
+		fmt.Sprintf("Add flux %s components manifests", bootstrapArgs.version),
+	)
 	if err != nil {
 		return err
 	}
@@ -249,13 +265,25 @@ func bootstrapGitLabCmdRun(cmd *cobra.Command, args []string) error {
 
 	// configure repo synchronization
 	logger.Actionf("generating sync manifests")
-	syncManifests, err := generateSyncManifests(repoURL, bootstrapArgs.branch, rootArgs.namespace, rootArgs.namespace, filepath.ToSlash(gitlabArgs.path.String()), tmpDir, gitlabArgs.interval)
+	syncManifests, err := generateSyncManifests(
+		repoURL,
+		bootstrapArgs.branch,
+		rootArgs.namespace,
+		rootArgs.namespace,
+		filepath.ToSlash(gitlabArgs.path.String()),
+		tmpDir,
+		gitlabArgs.interval,
+	)
 	if err != nil {
 		return err
 	}
 
 	// commit and push manifests
-	if changed, err = repository.Commit(ctx, path.Join(gitlabArgs.path.String(), rootArgs.namespace), "Add manifests"); err != nil {
+	if changed, err = repository.Commit(
+		ctx,
+		path.Join(gitlabArgs.path.String(), rootArgs.namespace),
+		fmt.Sprintf("Add flux %s sync manifests", bootstrapArgs.version),
+	); err != nil {
 		return err
 	} else if changed {
 		if err := repository.Push(ctx); err != nil {

cmd/flux/install.go

@@ -122,6 +122,13 @@ func installCmdRun(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
+	if installVersion == install.MakeDefaultOptions().Version {
+		installVersion, err = install.GetLatestVersion()
+		if err != nil {
+			return err
+		}
+	}
+
 	opts := install.Options{
 		BaseURL:                installManifestsPath,
 		Version:                installVersion,
@@ -156,7 +163,7 @@ func installCmdRun(cmd *cobra.Command, args []string) error {
 		fmt.Print(manifest.Content)
 	} else if installExport {
 		fmt.Println("---")
-		fmt.Println("# GitOps Toolkit revision", installVersion)
+		fmt.Println("# Flux version:", installVersion)
 		fmt.Println("# Components:", strings.Join(components, ","))
 		fmt.Print(manifest.Content)
 		fmt.Println("---")

pkg/manifestgen/install/install.go

@@ -18,11 +18,14 @@ package install
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"net/http"
 	"os"
 	"path"
 	"strings"
+	"time"
 
 	securejoin "github.com/cyphar/filepath-securejoin"
 
@@ -75,3 +78,29 @@ func Generate(options Options) (*manifestgen.Manifest, error) {
 		Content: string(content),
 	}, nil
 }
+
+// GetLatestVersion calls the GitHub API and returns the latest released version.
+func GetLatestVersion() (string, error) {
+	ghURL := "https://api.github.com/repos/fluxcd/flux2/releases/latest"
+	c := http.DefaultClient
+	c.Timeout = 15 * time.Second
+
+	res, err := c.Get(ghURL)
+	if err != nil {
+		return "", fmt.Errorf("calling GitHub API failed: %w", err)
+	}
+
+	if res.Body != nil {
+		defer res.Body.Close()
+	}
+
+	type meta struct {
+		Tag string `json:"tag_name"`
+	}
+	var m meta
+	if err := json.NewDecoder(res.Body).Decode(&m); err != nil {
+		return "", fmt.Errorf("decoding GitHub API response failed: %w", err)
+	}
+
+	return m.Tag, err
+}