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misc/dashboard/builder: add timeout to all external command invocations

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Fixes #4083.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6498136
This commit is contained in:
Andrew Gerrand 2012-09-17 10:41:47 -07:00
parent 0aad3cdc59
commit f005fedfa9
2 changed files with 38 additions and 22 deletions
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28
misc/dashboard/builder/exec.go
View File

@ -6,14 +6,16 @@ package main
import (
"bytes"
"fmt"
"io"
"log"
"os"
"os/exec"
"time"
)
// run is a simple wrapper for exec.Run/Close
func run(envv []string, dir string, argv ...string) error {
func run(timeout time.Duration, envv []string, dir string, argv ...string) error {
if *verbose {
log.Println("run", argv)
}
@ -21,7 +23,10 @@ func run(envv []string, dir string, argv ...string) error {
cmd.Dir = dir
cmd.Env = envv
cmd.Stderr = os.Stderr
return cmd.Run()
if err := cmd.Start(); err != nil {
return err
}
return waitWithTimeout(timeout, cmd)
}
// runLog runs a process and returns the combined stdout/stderr,
@ -29,7 +34,7 @@ func run(envv []string, dir string, argv ...string) error {
// process combined stdout and stderr output, exit status and error.
// The error returned is nil, if process is started successfully,
// even if exit status is not successful.
func runLog(envv []string, logfile, dir string, argv ...string) (string, int, error) {
func runLog(timeout time.Duration, envv []string, logfile, dir string, argv ...string) (string, int, error) {
if *verbose {
log.Println("runLog", argv)
}
@ -56,8 +61,23 @@ func runLog(envv []string, logfile, dir string, argv ...string) (string, int, er
return "", 1, startErr
}
exitStatus := 0
if err := cmd.Wait(); err != nil {
if err := waitWithTimeout(timeout, cmd); err != nil {
exitStatus = 1 // TODO(bradfitz): this is fake. no callers care, so just return a bool instead.
}
return b.String(), exitStatus, nil
}
func waitWithTimeout(timeout time.Duration, cmd *exec.Cmd) error {
errc := make(chan error, 1)
go func() {
errc <- cmd.Wait()
}()
var err error
select {
case <-time.After(timeout):
cmd.Process.Kill()
err = fmt.Errorf("timed out after %v", timeout)
case err = <-errc:
}
return err
}

32
misc/dashboard/builder/main.go
View File

@ -54,6 +54,8 @@ var (
buildCmd = flag.String("cmd", filepath.Join(".", allCmd), "Build command (specify relative to go/src/)")
failAll = flag.Bool("fail", false, "fail all builds")
parallel = flag.Bool("parallel", false, "Build multiple targets in parallel")
buildTimeout = flag.Duration("buildTimeout", 60*time.Minute, "Maximum time to wait for builds and tests")
cmdTimeout = flag.Duration("cmdTimeout", 2*time.Minute, "Maximum time to wait for an external command")
verbose = flag.Bool("v", false, "verbose")
)
@ -220,7 +222,7 @@ func (b *Builder) build() bool {
// Look for hash locally before running hg pull.
if _, err := fullHash(goroot, hash[:12]); err != nil {
// Don't have hash, so run hg pull.
if err := run(nil, goroot, hgCmd("pull")...); err != nil {
if err := run(*cmdTimeout, nil, goroot, hgCmd("pull")...); err != nil {
log.Println("hg pull failed:", err)
return false
}
@ -243,12 +245,12 @@ func (b *Builder) buildHash(hash string) error {
defer os.RemoveAll(workpath)
// clone repo
if err := run(nil, workpath, hgCmd("clone", goroot, "go")...); err != nil {
if err := run(*cmdTimeout, nil, workpath, hgCmd("clone", goroot, "go")...); err != nil {
return err
}
// update to specified revision
if err := run(nil, filepath.Join(workpath, "go"), hgCmd("update", hash)...); err != nil {
if err := run(*cmdTimeout, nil, filepath.Join(workpath, "go"), hgCmd("update", hash)...); err != nil {
return err
}
@ -261,7 +263,7 @@ func (b *Builder) buildHash(hash string) error {
cmd = filepath.Join(srcDir, cmd)
}
startTime := time.Now()
buildLog, status, err := runLog(b.envv(), logfile, srcDir, cmd)
buildLog, status, err := runLog(*buildTimeout, b.envv(), logfile, srcDir, cmd)
runTime := time.Now().Sub(startTime)
if err != nil {
return fmt.Errorf("%s: %s", *buildCmd, err)
@ -353,28 +355,22 @@ func (b *Builder) buildSubrepo(goRoot, pkg, hash string) (string, error) {
}
// fetch package and dependencies
log, status, err := runLog(env, "", goRoot, goTool, "get", "-d", pkg)
log, status, err := runLog(*cmdTimeout, env, "", goRoot, goTool, "get", "-d", pkg)
if err == nil && status != 0 {
err = fmt.Errorf("go exited with status %d", status)
}
if err != nil {
// 'go get -d' will fail for a subrepo because its top-level
// directory does not contain a go package. No matter, just
// check whether an hg directory exists and proceed.
hgDir := filepath.Join(goRoot, "src/pkg", pkg, ".hg")
if fi, e := os.Stat(hgDir); e != nil || !fi.IsDir() {
return log, err
}
return log, err
}
// hg update to the specified hash
pkgPath := filepath.Join(goRoot, "src/pkg", pkg)
if err := run(nil, pkgPath, hgCmd("update", hash)...); err != nil {
if err := run(*cmdTimeout, nil, pkgPath, hgCmd("update", hash)...); err != nil {
return "", err
}
// test the package
log, status, err = runLog(env, "", goRoot, goTool, "test", "-short", pkg+"/...")
log, status, err = runLog(*buildTimeout, env, "", goRoot, goTool, "test", "-short", pkg+"/...")
if err == nil && status != 0 {
err = fmt.Errorf("go exited with status %d", status)
}
@ -475,7 +471,7 @@ func commitWatcher() {
}
func hgClone(url, path string) error {
return run(nil, *buildroot, hgCmd("clone", url, path)...)
return run(*cmdTimeout, nil, *buildroot, hgCmd("clone", url, path)...)
}
func hgRepoExists(path string) bool {
@ -532,14 +528,14 @@ func commitPoll(key, pkg string) {
}
}
if err := run(nil, pkgRoot, hgCmd("pull")...); err != nil {
if err := run(*cmdTimeout, nil, pkgRoot, hgCmd("pull")...); err != nil {
log.Printf("hg pull: %v", err)
return
}
const N = 50 // how many revisions to grab
data, _, err := runLog(nil, "", pkgRoot, hgCmd("log",
data, _, err := runLog(*cmdTimeout, nil, "", pkgRoot, hgCmd("log",
"--encoding=utf-8",
"--limit="+strconv.Itoa(N),
"--template="+xmlLogTemplate)...,
@ -627,7 +623,7 @@ func addCommit(pkg, hash, key string) bool {
// fullHash returns the full hash for the given Mercurial revision.
func fullHash(root, rev string) (string, error) {
s, _, err := runLog(nil, "", root,
s, _, err := runLog(*cmdTimeout, nil, "", root,
hgCmd("log",
"--encoding=utf-8",
"--rev="+rev,