cmd/latestgo: Use Gerrit to retrieve latest Go version
Fixes golang/go#58350
Change-Id: I4bb22a6a1aaebcb965938d78c754c71e1041e431
Reviewed-on: https://go-review.googlesource.com/c/playground/+/467955
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
diff --git a/cmd/latestgo/main.go b/cmd/latestgo/main.go
index 5dab543..1b46133 100644
--- a/cmd/latestgo/main.go
+++ b/cmd/latestgo/main.go
@@ -7,41 +7,58 @@
import (
"context"
- "crypto/tls"
"flag"
"fmt"
"log"
+ "strings"
"time"
- "golang.org/x/build/maintner/maintnerd/apipb"
- "google.golang.org/grpc"
- "google.golang.org/grpc/credentials"
+ "golang.org/x/build/gerrit"
+ "golang.org/x/mod/semver"
)
-var prev = flag.Bool("prev", false, "whether to query the previous Go release, rather than the last (e.g. 1.17 versus 1.18)")
-
-const maintnerURI = "maintner.golang.org:443"
-
func main() {
+ client := gerrit.NewClient("https://go-review.googlesource.com", gerrit.NoAuth)
+
flag.Parse()
- ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+ ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
defer cancel()
- conn, err := grpc.DialContext(ctx, maintnerURI, grpc.WithBlock(),
- grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{NextProtos: []string{"h2"}})))
- if err != nil {
- log.Fatalf("error creating grpc client for %q: %v", maintnerURI, err)
- }
- mc := apipb.NewMaintnerServiceClient(conn)
- resp, err := mc.ListGoReleases(context.Background(), &apipb.ListGoReleasesRequest{})
+ tagInfo, err := client.GetProjectTags(ctx, "go")
if err != nil {
- log.Fatalln(err)
+ log.Fatalf("error retrieving project tags for 'go': %v", err)
}
- idx := 0
- if *prev {
- idx = 1
+
+ if len(tagInfo) == 0 {
+ log.Fatalln("no project tags found for 'go'")
}
- // On success, the maintner API always returns at least two releases.
- fmt.Print(resp.GetReleases()[idx].GetTagName())
+
+ var versions []string // semantic Go versions
+ tagMap := make(map[string]string) // version -> tag
+
+ for _, tag := range tagInfo {
+
+ tagName := strings.TrimPrefix(tag.Ref, "refs/tags/")
+
+ var maj, min, patch int // semver numbers corresponding to Go release
+ var err error
+ if _, err = fmt.Sscanf(tagName, "go%d.%d.%d", &maj, &min, &patch); err != nil {
+ _, err = fmt.Sscanf(tagName, "go%d.%d", &maj, &min)
+ patch = 0
+ }
+
+ if err != nil {
+ continue
+ }
+
+ version := fmt.Sprintf("v%d.%d.%d", maj, min, patch)
+ versions = append(versions, version)
+ tagMap[version] = tagName
+
+ }
+
+ semver.Sort(versions)
+
+ fmt.Print(tagMap[versions[len(versions)-1]])
}
