chore(internal/gapicgen): start recording googleapis hash (#3086)
Start writting a regen.txt file to go-genproto that records what
hash of googleapis was used to generate the most recent changes.
This is currently not be used, but it will be in the future to
parse commit messages to support context aware commits.
diff --git a/internal/gapicgen/generator/generator.go b/internal/gapicgen/generator/generator.go
index 9c372b8..f1bab52 100644
--- a/internal/gapicgen/generator/generator.go
+++ b/internal/gapicgen/generator/generator.go
@@ -16,11 +16,13 @@
package generator
import (
+ "bytes"
"context"
"fmt"
"log"
"os"
"os/exec"
+ "path/filepath"
"strings"
)
@@ -34,10 +36,41 @@
return fmt.Errorf("error generating gapics (may need to check logs for more errors): %v", err)
}
+ if err := recordGoogleapisHash(googleapisDir, genprotoDir); err != nil {
+ return fmt.Errorf("error recording most recent googleapis hash: %v", err)
+ }
+
return nil
}
-// build attemps to build all packages recursively from the given directory.
+// recordGoogleapisHash parses the latest commit in googleapis and records it to
+// regen.txt in go-genproto.
+func recordGoogleapisHash(googleapisDir, genprotoDir string) error {
+ out := bytes.NewBuffer(nil)
+ c := command("git", "rev-list", "HEAD^..")
+ c.Stdout = out
+ c.Stderr = os.Stderr
+ c.Dir = googleapisDir
+ if err := c.Run(); err != nil {
+ return err
+ }
+ commits := strings.Split(strings.TrimSpace(out.String()), "\n")
+ if len(commits) != 1 {
+ return fmt.Errorf("only expected one commit, got %d", len(commits))
+ }
+
+ f, err := os.OpenFile(filepath.Join(genprotoDir, "regen.txt"), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+ if err != nil {
+ return err
+ }
+ defer f.Close()
+ if _, err := f.WriteString(commits[0]); err != nil {
+ return err
+ }
+ return nil
+}
+
+// build attempts to build all packages recursively from the given directory.
func build(dir string) error {
c := command("go", "build", "./...")
c.Stdout = os.Stdout
