func New(proxySignals <-chan os.Signal, runner ifrit.Runner) ifrit.Runner {
return ifrit.RunFunc(func(signals <-chan os.Signal, ready chan<- struct{}) error {
process := ifrit.Background(runner)
<-process.Ready()
close(ready)
go forwardSignals(proxySignals, process)
go forwardSignals(signals, process)
return <-process.Wait()
})
}
return p, true
}
func (p PingChan) Run(sigChan <-chan os.Signal, ready chan<- struct{}) error {
close(ready)
select {
case <-sigChan:
return PingerExitedFromSignal
case p <- Ping{}:
return PingerExitedFromPing
}
}
// NoReadyRunner exits without closing the ready chan
var NoReadyRunner = ifrit.RunFunc(func(sigChan <-chan os.Signal, ready chan<- struct{}) error {
return NoReadyExitedNormally
})
var NoReadyExitedNormally = errors.New("no ready exited normally")
// SignalRecoder records all signals received, and exits on a set of signals.
type SignalRecoder struct {
sync.RWMutex
signals []os.Signal
exitSignals map[os.Signal]struct{}
}
func NewSignalRecorder(exitSignals ...os.Signal) *SignalRecoder {
exitSignals = append(exitSignals, os.Kill, os.Interrupt)
signalSet := map[os.Signal]struct{}{}
Describe("Stop", func() {
var runnerIndex int64
var startOrder chan int64
var stopOrder chan int64
makeRunner := func(waitTime time.Duration) (ifrit.Runner, chan struct{}) {
quickExit := make(chan struct{})
return ifrit.RunFunc(func(signals <-chan os.Signal, ready chan<- struct{}) error {
index := atomic.AddInt64(&runnerIndex, 1)
startOrder <- index
close(ready)
select {
case <-quickExit:
case <-signals:
}
time.Sleep(waitTime)
stopOrder <- index
return nil
}), quickExit
}
BeforeEach(func() {
startOrder = make(chan int64, 3)
stopOrder = make(chan int64, 3)
r1, _ := makeRunner(0)
r2, _ := makeRunner(30 * time.Millisecond)
r3, _ := makeRunner(50 * time.Millisecond)
var (
lifecycle ifrit.Process
fakeDeamonRunner func(signals <-chan os.Signal, ready chan<- struct{}) error
)
BeforeEach(func() {
builder := main.Builder{
RepoName: "ubuntu",
Tag: "latest",
OutputFilename: "/tmp/result/result.json",
DockerDaemonTimeout: 300 * time.Millisecond,
CacheDockerImage: true,
}
lifecycle = ifrit.Background(grouper.NewParallel(os.Interrupt, grouper.Members{
{"builder", ifrit.RunFunc(builder.Run)},
{"fake_docker_daemon", ifrit.RunFunc(fakeDeamonRunner)},
}))
})
AfterEach(func() {
ginkgomon.Interrupt(lifecycle)
})
Context("when the daemon won't start", func() {
fakeDeamonRunner = func(signals <-chan os.Signal, ready chan<- struct{}) error {
close(ready)
select {
case signal := <-signals:
return errors.New(signal.String())
case <-time.After(1 * time.Second):
func main() {
var insecureDockerRegistries registries
var dockerRegistryIPs ips
flagSet := flag.NewFlagSet("builder", flag.ExitOnError)
dockerImageURL := flagSet.String(
"dockerImageURL",
"",
"docker image uri in docker://[registry/][scope/]repository[#tag] format",
)
dockerRef := flagSet.String(
"dockerRef",
"",
"docker image reference in standard docker string format",
)
outputFilename := flagSet.String(
"outputMetadataJSONFilename",
"/tmp/result/result.json",
"filename in which to write the app metadata",
)
flagSet.Var(
&insecureDockerRegistries,
"insecureDockerRegistries",
"insecure Docker Registry addresses (host:port)",
)
dockerDaemonExecutablePath := flagSet.String(
"dockerDaemonExecutablePath",
"/tmp/docker_app_lifecycle/docker",
"path to the 'docker' executable",
)
cacheDockerImage := flagSet.Bool(
"cacheDockerImage",
false,
"Caches Docker images to private docker registry",
)
flagSet.Var(
&dockerRegistryIPs,
"dockerRegistryIPs",
"Docker Registry IPs",
)
dockerRegistryHost := flagSet.String(
"dockerRegistryHost",
"",
"Docker Registry host",
)
dockerRegistryPort := flagSet.Int(
"dockerRegistryPort",
8080,
"Docker Registry port",
)
dockerLoginServer := flagSet.String(
"dockerLoginServer",
registry.IndexServerAddress(),
"Docker Login server address",
)
dockerUser := flagSet.String(
"dockerUser",
"",
"User for pulling from docker registry",
)
dockerPassword := flagSet.String(
"dockerPassword",
"",
"Password for pulling from docker registry",
)
dockerEmail := flagSet.String(
"dockerEmail",
"",
"Email for pulling from docker registry",
)
if err := flagSet.Parse(os.Args[1:len(os.Args)]); err != nil {
println(err.Error())
os.Exit(1)
}
var repoName string
var tag string
if len(*dockerImageURL) > 0 {
parts, err := url.Parse(*dockerImageURL)
if err != nil {
println("invalid dockerImageURL: " + *dockerImageURL)
flagSet.PrintDefaults()
os.Exit(1)
}
repoName, tag = helpers.ParseDockerURL(parts)
} else if len(*dockerRef) > 0 {
repoName, tag = helpers.ParseDockerRef(*dockerRef)
} else {
println("missing flag: dockerImageURL or dockerRef required")
flagSet.PrintDefaults()
os.Exit(1)
}
builder := Builder{
RepoName: repoName,
Tag: tag,
OutputFilename: *outputFilename,
DockerDaemonExecutablePath: *dockerDaemonExecutablePath,
InsecureDockerRegistries: insecureDockerRegistries,
DockerDaemonTimeout: 10 * time.Second,
CacheDockerImage: *cacheDockerImage,
DockerRegistryIPs: dockerRegistryIPs,
DockerRegistryHost: *dockerRegistryHost,
DockerRegistryPort: *dockerRegistryPort,
DockerLoginServer: *dockerLoginServer,
DockerUser: *dockerUser,
DockerPassword: *dockerPassword,
DockerEmail: *dockerEmail,
}
members := grouper.Members{
{"builder", ifrit.RunFunc(builder.Run)},
}
if *cacheDockerImage {
if len(dockerRegistryIPs) == 0 {
println("missing flag: dockerRegistryIPs required")
os.Exit(1)
}
if len(*dockerRegistryHost) == 0 {
println("missing flag: dockerRegistryHost required")
os.Exit(1)
}
if strings.Contains(*dockerRegistryHost, ":") {
println("invalid host format", *dockerRegistryHost)
os.Exit(1)
}
if *dockerRegistryPort < 0 {
println("negative port number", *dockerRegistryPort)
os.Exit(1)
}
if *dockerRegistryPort > 65535 {
println("port number too big", *dockerRegistryPort)
os.Exit(1)
}
validateCredentials(*dockerLoginServer, *dockerUser, *dockerPassword, *dockerEmail)
if _, err := os.Stat(*dockerDaemonExecutablePath); err != nil {
println("docker daemon not found in", *dockerDaemonExecutablePath)
os.Exit(1)
}
dockerDaemon := DockerDaemon{
DockerDaemonPath: *dockerDaemonExecutablePath,
InsecureDockerRegistries: insecureDockerRegistries,
DockerRegistryIPs: dockerRegistryIPs,
DockerRegistryHost: *dockerRegistryHost,
}
members = append(members, grouper.Member{"docker_daemon", ifrit.RunFunc(dockerDaemon.Run)})
}
group := grouper.NewParallel(os.Interrupt, members)
process := ifrit.Invoke(sigmon.New(group))
fmt.Println("Staging process started ...")
err := <-process.Wait()
if err != nil {
println("Staging process failed:", err.Error())
os.Exit(2)
}
fmt.Println("Staging process finished")
}