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tools/bin/ut: accelerate building test binary (pingcap#31882)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| // Copyright 2021 PingCAP, Inc. | ||
| // | ||
| // 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 ( | ||
| "bufio" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
| ) | ||
|
|
||
| func main() { | ||
| // See https://github.com/golang/go/issues/15513#issuecomment-773994959 | ||
| // go test --exec=xprog ./... | ||
| // Command line args looks like: | ||
| // '$CWD/xprog /tmp/go-build2662369829/b1382/aggfuncs.test -test.paniconexit0 -test.timeout=10m0s' | ||
| // This program moves the test binary /tmp/go-build2662369829/b1382/aggfuncs.test to someplace else for later use. | ||
|
|
||
| // Extract the current work directory | ||
| cwd := os.Args[0] | ||
| cwd = cwd[:len(cwd)-len("tools/bin/xprog")] | ||
|
|
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| testBinaryPath := os.Args[1] | ||
| dir, _ := filepath.Split(testBinaryPath) | ||
|
|
||
| // Extract the package info from /tmp/go-build2662369829/b1382/importcfg.link | ||
| pkg := getPackageInfo(dir) | ||
|
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| const prefix = "github.com/pingcap/tidb/" | ||
| if !strings.HasPrefix(pkg, prefix) { | ||
| os.Exit(-3) | ||
| } | ||
|
|
||
| // github.com/pingcap/tidb/util/topsql.test => util/topsql | ||
| pkg = pkg[len(prefix) : len(pkg)-len(".test")] | ||
|
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| _, file := filepath.Split(pkg) | ||
|
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| // The path of the destination file looks like $CWD/util/topsql/topsql.test.bin | ||
| newName := filepath.Join(cwd, pkg, file+".test.bin") | ||
|
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||
| if err1 := os.Rename(testBinaryPath, newName); err1 != nil { | ||
| // Rename fail, handle error like "invalid cross-device linkcd tools/check" | ||
| err1 = MoveFile(testBinaryPath, newName) | ||
| if err1 != nil { | ||
| os.Exit(-4) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func getPackageInfo(dir string) string { | ||
| // Read the /tmp/go-build2662369829/b1382/importcfg.link file to get the package information | ||
| f, err := os.Open(filepath.Join(dir, "importcfg.link")) | ||
| if err != nil { | ||
| os.Exit(-1) | ||
| } | ||
| defer f.Close() | ||
|
|
||
| r := bufio.NewReader(f) | ||
| // packagefile github.com/pingcap/tidb/session.test=/home/genius/.cache/go-build/fb/fb1587cce5727fa9461131eab8260a52878da04f5c8da49dd3c7b2d941430c63-d | ||
| line, _, err := r.ReadLine() | ||
| if err != nil { | ||
| os.Exit(-2) | ||
| } | ||
| start := strings.IndexByte(string(line), ' ') | ||
| end := strings.IndexByte(string(line), '=') | ||
| pkg := string(line[start+1 : end]) | ||
| return pkg | ||
| } | ||
|
|
||
| func MoveFile(sourcePath, destPath string) error { | ||
| inputFile, err := os.Open(sourcePath) | ||
| if err != nil { | ||
| return fmt.Errorf("Couldn't open source file: %s", err) | ||
| } | ||
| outputFile, err := os.Create(destPath) | ||
| if err != nil { | ||
| inputFile.Close() | ||
| return fmt.Errorf("Couldn't open dest file: %s", err) | ||
| } | ||
| defer outputFile.Close() | ||
| _, err = io.Copy(outputFile, inputFile) | ||
| inputFile.Close() | ||
| if err != nil { | ||
| return fmt.Errorf("Writing to output file failed: %s", err) | ||
| } | ||
|
|
||
| // Handle the permissions | ||
| si, err := os.Stat(sourcePath) | ||
| if err != nil { | ||
| return fmt.Errorf("Stat error: %s", err) | ||
| } | ||
| err = os.Chmod(destPath, si.Mode()) | ||
| if err != nil { | ||
| return fmt.Errorf("Chmod error: %s", err) | ||
| } | ||
|
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||
| // The copy was successful, so now delete the original file | ||
| err = os.Remove(sourcePath) | ||
| if err != nil { | ||
| return fmt.Errorf("Failed removing original file: %s", err) | ||
| } | ||
| return nil | ||
| } |