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// Copyright 2020 Google Inc. 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 (
"io/fs"
"io/ioutil"
"os"
"path/filepath"
"android/soong/android"
"android/soong/bp2build"
"android/soong/starlark_import"
)
// A helper function to generate a Read-only Bazel workspace in outDir
func createBazelWorkspace(ctx *bp2build.CodegenContext, outDir string, generateFilegroups bool) error {
os.RemoveAll(outDir)
ruleShims := bp2build.CreateRuleShims(android.ModuleTypeFactories())
res, err := bp2build.GenerateBazelTargets(ctx, generateFilegroups)
if err != nil {
panic(err)
}
filesToWrite := bp2build.CreateBazelFiles(ruleShims, res.BuildDirToTargets(), ctx.Mode())
bazelRcFiles, err2 := CopyBazelRcFiles()
if err2 != nil {
return err2
}
filesToWrite = append(filesToWrite, bazelRcFiles...)
for _, f := range filesToWrite {
if err := writeReadOnlyFile(outDir, f); err != nil {
return err
}
}
// Add starlark deps here, so that they apply to both queryview and apibp2build which
// both run this function.
starlarkDeps, err2 := starlark_import.GetNinjaDeps()
if err2 != nil {
return err2
}
ctx.AddNinjaFileDeps(starlarkDeps...)
return nil
}
// CopyBazelRcFiles creates BazelFiles for all the bazelrc files under
// build/bazel. They're needed because the rc files are still read when running
// queryview, so they have to be in the queryview workspace.
func CopyBazelRcFiles() ([]bp2build.BazelFile, error) {
result := make([]bp2build.BazelFile, 0)
err := filepath.WalkDir(filepath.Join(topDir, "build/bazel"), func(path string, info fs.DirEntry, err error) error {
if filepath.Ext(path) == ".bazelrc" {
contents, err := os.ReadFile(path)
if err != nil {
return err
}
path, err = filepath.Rel(topDir, path)
if err != nil {
return err
}
result = append(result, bp2build.BazelFile{
Dir: filepath.Dir(path),
Basename: filepath.Base(path),
Contents: string(contents),
})
}
return nil
})
return result, err
}
// The auto-conversion directory should be read-only, sufficient for bazel query. The files
// are not intended to be edited by end users.
func writeReadOnlyFile(dir string, f bp2build.BazelFile) error {
dir = filepath.Join(dir, f.Dir)
if err := createDirectoryIfNonexistent(dir); err != nil {
return err
}
pathToFile := filepath.Join(dir, f.Basename)
// 0444 is read-only
err := ioutil.WriteFile(pathToFile, []byte(f.Contents), 0444)
return err
}
func writeReadWriteFile(dir string, f bp2build.BazelFile) error {
dir = filepath.Join(dir, f.Dir)
if err := createDirectoryIfNonexistent(dir); err != nil {
return err
}
pathToFile := filepath.Join(dir, f.Basename)
// 0644 is read-write
err := ioutil.WriteFile(pathToFile, []byte(f.Contents), 0644)
return err
}
func createDirectoryIfNonexistent(dir string) error {
if _, err := os.Stat(dir); os.IsNotExist(err) {
return os.MkdirAll(dir, os.ModePerm)
} else {
return err
}
}
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