Add release notes to release command

go/bzl/app.go

@@ -1,6 +1,7 @@
 package bzl
 
 import (
+	"fmt"
 	"github.com/urfave/cli"
 	"github.com/bzl-io/bzl/bazel"
 	"github.com/bzl-io/bzl/command/install"
@@ -11,6 +12,7 @@ import (
 
 // Will be replaced at link time to `git rev-parse HEAD`
 var BUILD_SCM_REVISION = "0000000000000000000000000000000000000000"
+var BUILD_SCM_DATE = "0000-00-00"
 
 // App embeds an urfave/cli.App 
 type App struct {
@@ -25,8 +27,8 @@ func New() *App {
 	// Create Cli inner app
 	app := cli.NewApp()
 	app.EnableBashCompletion = true
-	app.Usage = "A candy wrapper for the Bazel build tool"
-	app.Version = BUILD_SCM_REVISION
+	app.Usage = "A wrapper for the Bazel build tool"
+	app.Version = fmt.Sprintf("%s (%s)", BUILD_SCM_REVISION, BUILD_SCM_DATE)
 
 	// Global flags for bzl app
 	app.Flags = []cli.Flag{

go/bzl/command/release/release.go

@@ -11,6 +11,7 @@ import (
 	"github.com/golang/sync/errgroup"	
 	"github.com/davecgh/go-spew/spew"
 	"io"
+	"io/ioutil"
 	"net/http"
 	"os"
 	"path"
@@ -47,6 +48,10 @@ var Command = &cli.Command{
 			Name: "tag",
 			Usage: "Tag name for the release",
 		},
+		cli.StringFlag{
+			Name: "notes",
+			Usage: "Release notes filename (a path to markdown file)",
+		},
 		cli.StringFlag{
 			Name: "commit",
 			Usage: "Commit ID for the release",
@@ -240,19 +245,34 @@ func uploadRelease(c *cli.Context, files []string) (*github.RepositoryRelease, e
 	if commit == "" {
 		return nil, errors.New("--commit is required when publishing a release")
 	}
-
+	notes, err := getReleaseNotes(c.String("notes"))
+	if err != nil {
+		return nil, err
+	}
 	fmt.Println("Uploading assets for release", tag, "...")
 
 	client := gh.Client()
 
 	req := &github.RepositoryRelease{
 		TagName: &tag,
+		TargetCommitish: &commit,
+		Body: &notes,
 	}
 
 	release, err := createRelease(c, client, req, files)
 	return release, err
 }
 
+// Read the given filename into a string.  Return err if any io error
+// occured.
+func getReleaseNotes(filename string) (string, error) {
+	bytes, err := ioutil.ReadFile(filename) 
+	if err != nil {
+		return "", err
+	}
+	return string(bytes), nil
+}
+
 func createRelease(c *cli.Context, client *github.Client, req *github.RepositoryRelease, files []string) (*github.RepositoryRelease, error) {
 	ctx := context.Background()
 	if c.Bool("dry_run") {
@@ -264,6 +284,9 @@ func createRelease(c *cli.Context, client *github.Client, req *github.Repository
 		if res.StatusCode == 404 {
 			fmt.Fprintf(os.Stderr, "Github responded with 404 for %s/%s; this may represent an authentication error.  Confirm that the env vars BZL_GH_USERNAME and BZL_GH_PASSWORD are set with PUSH access to this repository (https://developer.github.com/v3/troubleshooting/).\n", c.String("owner"), c.String("repo"))
 		}
+		if res.StatusCode == 422 {
+			fmt.Fprintf(os.Stderr, "Github responded with 422 (validation Failed).  This can occur for multiple reasons, but one thing to check is that the target --commit actually exists at the remote repository.\n")
+		}
 		return nil, cli.NewExitError(fmt.Sprintf("Create release failed: %v", err), 1)
 	}
 

tools/get_workspace_status

@@ -18,6 +18,13 @@ then
 fi
 echo "BUILD_SCM_REVISION ${git_rev}"
 
+git_date=$(git log -1 --date=short --pretty=format:%cd)
+if [[ $? != 0 ]];
+then
+    exit 1
+fi
+echo "BUILD_SCM_DATE ${git_date}"
+
 # Check whether there are any uncommited changes
 git diff-index --quiet HEAD --
 if [[ $? == 0 ]];