Merge remote-tracking branch 'aosp/upstream-master' into merge_rules_go am: 49dcd02124 am: 711a453236

Original change: https://android-review.googlesource.com/c/platform/external/bazelbuild-rules_go/+/2625353

Change-Id: Id7ea409a5954ab0efd0e8fe6c30ccfe507d9bf95
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/go/tools/releaser/boilerplate.go b/go/tools/releaser/boilerplate.go
new file mode 100644
index 00000000..828934a5
--- /dev/null
+++ b/go/tools/releaser/boilerplate.go
@@ -0,0 +1,78 @@
+// Copyright 2021 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"sort"
+
+	"golang.org/x/mod/semver"
+)
+
+func genBoilerplate(version, shasum, goVersion string) string {
+	return fmt.Sprintf(`load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "io_bazel_rules_go",
+    sha256 = "%[2]s",
+    urls = [
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/%[1]s/rules_go-%[1]s.zip",
+        "https://github.com/bazelbuild/rules_go/releases/download/%[1]s/rules_go-%[1]s.zip",
+    ],
+)
+
+load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_dependencies")
+
+go_rules_dependencies()
+
+go_register_toolchains(version = "%[3]s")`, version, shasum, goVersion)
+}
+
+func findLatestGoVersion() (v string, err error) {
+	defer func() {
+		if err != nil {
+			err = fmt.Errorf("finding latest go version: %w", err)
+		}
+	}()
+	resp, err := http.Get("https://golang.org/dl/?mode=json")
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+	data, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+	type version struct {
+		Version string
+	}
+	var versions []version
+	if err := json.Unmarshal(data, &versions); err != nil {
+		return "", err
+	}
+	if len(versions) == 0 {
+		return "", errors.New("no versions found")
+	}
+	sort.Slice(versions, func(i, j int) bool {
+		vi := "v" + versions[i].Version[len("go"):]
+		vj := "v" + versions[j].Version[len("go"):]
+		return semver.Compare(vi, vj) > 0
+	})
+	return versions[0].Version[len("go"):], nil
+}