mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-14 10:13:10 +02:00
135ac4b6f9
* Moved internal/tools duplicated findRepoRoot function to common package Created a package under "go.opentelemetry.io/otel/internal/tools/common" with func FindRepoRoot() to return string. Added a line in crosslink to convert outputted string to type repo. * Removed debugging line Co-authored-by: Anthony Mirabella <a9@aneurysm9.com> * Added changelog stub * Update CHANGELOG.md * Removed change log entry * Updated docstring for FindRepoPath() * Change tools/common package to tools * Added back "errors" import to generator.go Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
155 lines
3.5 KiB
Go
155 lines
3.5 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// The crosslink tool generates and maintains replace directives in all
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// the go.mod files within this repository. Some directives are superfluous
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// (e.g. because the replaced module doesn't occur in the dependency tree),
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// but we generate them anyway for the sake of consistency (#1529 tracks
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// pruning this to a mininal set).
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//
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// In particular, we generate a replace directive from each module to itself
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// (i.e., the target path "./"). This is actually necessary in the presence of
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// cyclic dependencies between modules.
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package main
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"text/tabwriter"
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"go.opentelemetry.io/otel/internal/tools"
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)
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type repo string
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type mod struct {
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filePath string
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importPath string
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}
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func (r repo) findModules() (mods, error) {
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var results []mod
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err := filepath.Walk(string(r), func(path string, info os.FileInfo, err error) error {
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if !info.IsDir() {
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return nil
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}
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_, err = os.Stat(filepath.Join(path, "go.mod"))
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if errors.Is(err, os.ErrNotExist) {
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return nil
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}
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if err != nil {
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return err
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}
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cmd := exec.Command("go", "mod", "edit", "-json")
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cmd.Dir = path
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out, err := cmd.Output()
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if err != nil {
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return err
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}
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var result struct {
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Module struct {
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Path string
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}
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}
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err = json.Unmarshal(out, &result)
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if err != nil {
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return err
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}
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results = append(results, mod{
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filePath: path,
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importPath: result.Module.Path,
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})
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return nil
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})
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return results, err
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}
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type mods []mod
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func (m mods) print(w io.Writer) error {
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tw := tabwriter.NewWriter(w, 0, 0, 1, ' ', 0)
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if _, err := fmt.Fprintln(tw, "FILE PATH\tIMPORT PATH"); err != nil {
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return err
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}
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for _, m := range m {
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if _, err := fmt.Fprintf(tw, "%s\t%s\n", m.filePath, m.importPath); err != nil {
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return err
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}
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}
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return tw.Flush()
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}
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func (m mods) crossLink() error {
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for _, from := range m {
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args := []string{"mod", "edit"}
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for _, to := range m {
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localPath, err := filepath.Rel(from.filePath, to.filePath)
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if err != nil {
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return err
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}
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if localPath == "." || localPath == ".." {
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localPath += "/"
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} else if !strings.HasPrefix(localPath, "..") {
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localPath = "./" + localPath
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}
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args = append(args, "-replace", to.importPath+"="+localPath)
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}
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cmd := exec.Command("go", args...)
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cmd.Dir = from.filePath
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out, err := cmd.CombinedOutput()
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if err != nil {
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log.Println(string(out))
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return err
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}
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}
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return nil
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}
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func main() {
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repoRootStr, err := tools.FindRepoRoot()
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if err != nil {
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log.Fatalf("unable to find repo root: %v", err)
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}
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repoRoot := repo(repoRootStr)
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mods, err := repoRoot.findModules()
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if err != nil {
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log.Fatalf("unable to list modules: %v", err)
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}
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if err := mods.print(os.Stdout); err != nil {
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log.Fatalf("unable to print modules: %v", err)
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}
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if err := mods.crossLink(); err != nil {
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log.Fatalf("unable to crosslink: %v", err)
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}
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}
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