blob: a4e36143491b1b92cb907970511dfc35ad34126b [file] [log] [blame]
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// The retrybuilds command clears build failures from the build.golang.org dashboard
// to force them to be rebuilt.
//
// Valid usage modes:
//
// retrybuilds -loghash=f45f0eb8
// retrybuilds -builder=openbsd-amd64
// retrybuilds -builder=openbsd-amd64 -hash=6fecb7
// retrybuilds -redo-flaky
// retrybuilds -redo-flaky -builder=linux-amd64-clang
package main
import (
"bytes"
"crypto/hmac"
"crypto/md5"
"encoding/json"
"flag"
"fmt"
"io/ioutil"
"log"
"net/http"
"net/url"
"os"
"path/filepath"
"strings"
"sync"
"time"
)
var (
masterKeyFile = flag.String("masterkey", filepath.Join(os.Getenv("HOME"), "keys", "gobuilder-master.key"), "path to Go builder master key. If present, the key argument is not necessary")
keyFile = flag.String("key", "", "path to key file")
builder = flag.String("builder", "", "builder to wipe a result for.")
hash = flag.String("hash", "", "Hash to wipe. If empty, all will be wiped.")
redoFlaky = flag.Bool("redo-flaky", false, "Reset all flaky builds. If builder is empty, the master key is required.")
builderPrefix = flag.String("builder-prefix", "https://build.golang.org", "builder URL prefix")
logHash = flag.String("loghash", "", "If non-empty, clear the build that failed with this loghash prefix")
sendMasterKey = flag.Bool("sendmaster", false, "send the master key in request instead of a builder-specific key; allows overriding actions of revoked keys")
branch = flag.String("branch", "master", "branch to find flakes from (for use with -redo-flaky)")
)
type Failure struct {
Builder string
Hash string
LogURL string
}
func main() {
flag.Parse()
*builderPrefix = strings.TrimSuffix(*builderPrefix, "/")
if *logHash != "" {
substr := "/log/" + *logHash
for _, f := range failures() {
if strings.Contains(f.LogURL, substr) {
wipe(f.Builder, f.Hash)
}
}
return
}
if *redoFlaky {
fixTheFlakes()
return
}
if *builder == "" {
log.Fatalf("Missing -builder, -redo-flaky, or -loghash flag.")
}
wipe(*builder, fullHash(*hash))
}
func fixTheFlakes() {
gate := make(chan bool, 50)
var wg sync.WaitGroup
for _, f := range failures() {
f := f
if *builder != "" && f.Builder != *builder {
continue
}
gate <- true
wg.Add(1)
go func() {
defer wg.Done()
defer func() { <-gate }()
res, err := http.Get(f.LogURL)
if err != nil {
log.Fatalf("Error fetching %s: %v", f.LogURL, err)
}
failLog, err := ioutil.ReadAll(res.Body)
res.Body.Close()
if err != nil {
log.Fatalf("Error reading %s: %v", f.LogURL, err)
}
if isFlaky(string(failLog)) {
log.Printf("Restarting flaky %+v", f)
wipe(f.Builder, f.Hash)
}
}()
}
wg.Wait()
}
var flakePhrases = []string{
"No space left on device",
"fatal error: error in backend: IO failure on output stream",
"Boffset: unknown state 0",
"Bseek: unknown state 0",
"error exporting repository: exit status",
"remote error: User Is Over Quota",
"fatal: remote did not send all necessary objects",
"Failed to schedule \"", // e.g. Failed to schedule "go_test:archive/tar" test after 3 tries.
"lookup _xmpp-server._tcp.google.com. on 8.8.8.8:53: dial udp 8.8.8.8:53: i/o timeout",
"lookup _xmpp-server._tcp.google.com on",
"lookup gmail.com. on 8.8.8.8:53: dial udp 8.8.8.8:53: i/o timeout",
"lookup gmail.com on 8.8.8.8:53",
"lookup www.mit.edu on ",
"undefined: runtime.SetMutexProfileFraction", // ppc64 builders had not-quite-go1.8 bootstrap
"make.bat: The parameter is incorrect",
}
func isFlaky(failLog string) bool {
if strings.Count(strings.TrimSpace(failLog), "\n") < 2 {
return true
}
if strings.HasPrefix(failLog, "exit status ") {
return true
}
if strings.HasPrefix(failLog, "timed out after ") {
return true
}
if strings.HasPrefix(failLog, "Failed to schedule ") {
return true
}
for _, phrase := range flakePhrases {
if strings.Contains(failLog, phrase) {
return true
}
}
numLines := strings.Count(failLog, "\n")
if numLines < 20 && strings.Contains(failLog, "error: exit status") {
return true
}
// e.g. fatal: destination path 'go.tools.TMP' already exists and is not an empty directory.
// To be fixed in golang.org/issue/9407
if strings.Contains(failLog, "fatal: destination path '") &&
strings.Contains(failLog, "' already exists and is not an empty directory.") {
return true
}
return false
}
func fullHash(h string) string {
if h == "" || len(h) == 40 {
return h
}
for _, f := range failures() {
if strings.HasPrefix(f.Hash, h) {
return f.Hash
}
}
log.Fatalf("invalid hash %q; failed to finds its full hash. Not a recent failure?", h)
panic("unreachable")
}
// hash may be empty
func wipe(builder, hash string) {
if hash != "" {
log.Printf("Clearing %s, hash %s", builder, hash)
} else {
log.Printf("Clearing all builds for %s", builder)
}
vals := url.Values{
"builder": {builder},
"hash": {hash},
"key": {builderKey(builder)},
}
for i := 0; i < 10; i++ {
res, err := http.PostForm(*builderPrefix+"/clear-results?"+vals.Encode(), nil)
if err != nil {
log.Fatal(err)
}
body, err := ioutil.ReadAll(res.Body)
res.Body.Close()
if err != nil {
log.Fatal(err)
}
if res.StatusCode != 200 {
log.Fatalf("Error clearing %v hash %q: %v", builder, hash, res.Status)
}
var dashResponse struct {
Error string
}
if err := json.Unmarshal(body, &dashResponse); err != nil {
log.Fatalf("Bad dashboard response: %v\nBody: %s", err, body)
}
switch e := dashResponse.Error; e {
case "datastore: concurrent transaction":
log.Printf("Concurrent datastore transaction wiping %v %v: retrying in 1 second", builder, hash)
time.Sleep(time.Second)
continue
default:
log.Fatalf("Dashboard error: %v", e)
case "":
return
}
}
log.Fatalf("Too many datastore transaction issues wiping %v %v", builder, hash)
}
func builderKey(builder string) string {
if v, ok := builderKeyFromMaster(builder); ok {
return v
}
if *keyFile == "" {
log.Fatalf("No --key specified for builder %s", builder)
}
slurp, err := ioutil.ReadFile(*keyFile)
if err != nil {
log.Fatalf("Error reading builder key %s: %v", builder, err)
}
return strings.TrimSpace(string(slurp))
}
func builderKeyFromMaster(builder string) (key string, ok bool) {
if *masterKeyFile == "" {
return
}
slurp, err := ioutil.ReadFile(*masterKeyFile)
if err != nil {
return
}
if *sendMasterKey {
return string(slurp), true
}
h := hmac.New(md5.New, bytes.TrimSpace(slurp))
h.Write([]byte(builder))
return fmt.Sprintf("%x", h.Sum(nil)), true
}
var (
failMu sync.Mutex
failCache []Failure
)
func failures() (ret []Failure) {
failMu.Lock()
ret = failCache
failMu.Unlock()
if ret != nil {
return
}
ret = []Failure{} // non-nil
res, err := http.Get(*builderPrefix + "/?mode=failures&branch=" + url.QueryEscape(*branch))
if err != nil {
log.Fatal(err)
}
slurp, err := ioutil.ReadAll(res.Body)
res.Body.Close()
if err != nil {
log.Fatal(err)
}
body := string(slurp)
for _, line := range strings.Split(body, "\n") {
f := strings.Fields(line)
if len(f) == 3 {
ret = append(ret, Failure{
Hash: f[0],
Builder: f[1],
LogURL: f[2],
})
}
}
failMu.Lock()
failCache = ret
failMu.Unlock()
return ret
}