mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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d46c0d2e36
* Refactor common repo code for crosslink * Add dbotconf utility * Add dependabot-generate target to Makefile * Generate dependabot.yml * Update Makefile targets related to dependabot-generate
89 lines
2.4 KiB
Go
89 lines
2.4 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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"log"
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"os"
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"path/filepath"
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"strings"
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"go.opentelemetry.io/otel/internal/tools"
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"golang.org/x/mod/modfile"
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)
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func crossLink(m []*modfile.File) error {
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for _, from := range m {
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basepath := filepath.Dir(from.Syntax.Name)
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for _, to := range m {
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newPath, err := filepath.Rel(basepath, filepath.Dir(to.Syntax.Name))
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if err != nil {
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return err
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}
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switch {
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case newPath == ".", newPath == "..":
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newPath += "/"
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case !strings.HasPrefix(newPath, ".."):
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newPath = "./" + newPath
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}
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from.AddReplace(to.Module.Mod.Path, "", newPath, "")
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}
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from.Cleanup()
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f, err := os.OpenFile(from.Syntax.Name, os.O_RDWR|os.O_TRUNC, 0755)
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if err != nil {
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return err
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}
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if _, err = f.Write(modfile.Format(from.Syntax)); err != nil {
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return err
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}
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if err = f.Close(); err != nil {
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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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root, 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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mods, err := root.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 := tools.PrintModFiles(os.Stdout, mods); err != nil {
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log.Fatalf("unable to print modules: %v", err)
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}
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if err := crossLink(mods); 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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