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release.go
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release.go
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// Copyright 2021 Google LLC
//
// 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"
"log"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
)
const (
prefix = "github.com/GoogleCloudPlatform/opentelemetry-operations-go"
stable = "1.16.0"
unstable = "0.40.0"
)
var versions = map[string]string{
"": unstable,
"exporter/trace/": stable,
"example/trace/http/": unstable,
"exporter/metric/": unstable,
"example/metric/": unstable,
"exporter/collector/": unstable,
"exporter/collector/googlemanagedprometheus/": unstable,
"internal/resourcemapping/": unstable,
"internal/cloudmock/": unstable,
"detectors/gcp/": stable,
"propagator/": unstable,
"e2e-test-server/": unstable,
}
type module string
func allModules() ([]module, error) {
var out []module
err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.Name() == "go.mod" {
out = append(out, module(path))
}
return nil
})
return out, err
}
func (m module) requires() ([]string, error) {
cmd := exec.Command("go", "mod", "edit", "-json", string(m))
cmd.Stderr = os.Stderr
out, err := cmd.Output()
if err != nil {
return nil, fmt.Errorf("running %q: %w", cmd.String(), err)
}
var parsed struct {
Require []struct{ Path string }
}
if err := json.Unmarshal(out, &parsed); err != nil {
return nil, fmt.Errorf("parsing output from %q: %w", cmd.String(), err)
}
result := make([]string, len(parsed.Require))
for i, req := range parsed.Require {
result[i] = req.Path
}
return result, nil
}
func (m module) editRequirement(dep, version string) error {
cmd := exec.Command("go", "mod", "edit", "-require="+dep+"@v"+version, string(m))
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
return fmt.Errorf("running %q: %w", cmd.String(), err)
}
return nil
}
func (m module) version() string {
modDir := filepath.Dir(string(m))
if modDir == "." {
modDir = ""
} else {
modDir += "/"
}
ver := versions[modDir]
return ver
}
var pattern = regexp.MustCompile(`return ".*"`)
func (m module) updateVersion() error {
fullPath := filepath.Join(filepath.Dir(string(m)), "version.go")
content, err := os.ReadFile(fullPath)
if err != nil {
return err
}
content = pattern.ReplaceAllLiteral(content, []byte(`return "`+m.version()+`"`))
return os.WriteFile(fullPath, content, 0)
}
func prepare() error {
mods, err := allModules()
if err != nil {
return err
}
for _, m := range mods {
if err := m.updateVersion(); err != nil && !errors.Is(err, os.ErrNotExist) {
return err
}
deps, err := m.requires()
if err != nil {
return err
}
for _, dep := range deps {
if !strings.HasPrefix(dep, prefix) {
continue
}
suffix := strings.TrimPrefix(dep, prefix)
if suffix != "" {
suffix = suffix[1:] + "/"
}
ver := versions[suffix]
if err := m.editRequirement(dep, ver); err != nil {
return err
}
}
}
return nil
}
func tag() error {
for dir, ver := range versions {
tag := dir + "v" + ver
fmt.Printf("Creating tag %s\n", tag)
cmd := exec.Command("git", "tag", tag)
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
return fmt.Errorf("running %q: %w", cmd.String(), err)
}
}
return nil
}
func main() {
if len(os.Args) != 2 {
fmt.Println("Usage: go run tools/release.go (prepare|tag)")
os.Exit(1)
}
switch os.Args[1] {
case "prepare":
if err := prepare(); err != nil {
log.Fatal(err)
}
fmt.Println("Changes needed for release are in the working tree. Commit them and make a PR for review.")
case "tag":
if err := tag(); err != nil {
log.Fatal(err)
}
fmt.Println("Now push the newly created tags to Github using git push --tags")
}
}