// newFileWriter returns a prepared fileWriter for the driver and path. This
// could be considered similar to an "open" call on a regular filesystem.
func newFileWriter(driver storagedriver.StorageDriver, path string) (*bufferedFileWriter, error) {
fw := fileWriter{
driver: driver,
path: path,
}
if fi, err := driver.Stat(path); err != nil {
switch err := err.(type) {
case storagedriver.PathNotFoundError:
// ignore, offset is zero
default:
return nil, err
}
} else {
if fi.IsDir() {
return nil, fmt.Errorf("cannot write to a directory")
}
fw.size = fi.Size()
}
buffered := bufferedFileWriter{
fileWriter: fw,
}
buffered.bw = bufio.NewWriterSize(&buffered.fileWriter, fileWriterBufferSize)
return &buffered, nil
}
// WalkWithChildrenFilter traverses a filesystem defined within driver,
// starting from the given path, calling f on each file. Given filter will be
// called on a list of directory children before being recursively processed.
func WalkWithChildrenFilter(ctx context.Context, driver storageDriver.StorageDriver, from string, filter WalkChildrenFilter, f WalkFn) error {
children, err := driver.List(ctx, from)
if err != nil {
return err
}
filter(children)
for _, child := range children {
// TODO(stevvooe): Calling driver.Stat for every entry is quite
// expensive when running against backends with a slow Stat
// implementation, such as s3. This is very likely a serious
// performance bottleneck.
fileInfo, err := driver.Stat(ctx, child)
if err != nil {
return err
}
err = f(fileInfo)
skipDir := (err == ErrSkipDir)
if err != nil && !skipDir {
return err
}
if fileInfo.IsDir() && !skipDir {
if err := WalkWithChildrenFilter(ctx, driver, child, filter, f); err != nil {
return err
}
}
}
return nil
}
// newFileReader initializes a file reader for the remote file. The read takes
// on the offset and size at the time the reader is created. If the underlying
// file changes, one must create a new fileReader.
func newFileReader(driver storagedriver.StorageDriver, path string) (*fileReader, error) {
rd := &fileReader{
driver: driver,
path: path,
}
// Grab the size of the layer file, ensuring existence.
if fi, err := driver.Stat(path); err != nil {
switch err := err.(type) {
case storagedriver.PathNotFoundError:
// NOTE(stevvooe): We really don't care if the file is not
// actually present for the reader. If the caller needs to know
// whether or not the file exists, they should issue a stat call
// on the path. There is still no guarantee, since the file may be
// gone by the time the reader is created. The only correct
// behavior is to return a reader that immediately returns EOF.
default:
// Any other error we want propagated up the stack.
return nil, err
}
} else {
if fi.IsDir() {
return nil, fmt.Errorf("cannot read a directory")
}
// Fill in file information
rd.size = fi.Size()
rd.modtime = fi.ModTime()
}
return rd, nil
}
// Exists provides a utility method to test whether or not a path exists in
// the given driver.
func exists(ctx context.Context, drv driver.StorageDriver, path string) (bool, error) {
if _, err := drv.Stat(ctx, path); err != nil {
switch err := err.(type) {
case driver.PathNotFoundError:
return false, nil
default:
return false, err
}
}
return true, nil
}
// exists provides a utility method to test whether or not
func exists(driver storagedriver.StorageDriver, path string) (bool, error) {
if _, err := driver.Stat(path); err != nil {
switch err := err.(type) {
case storagedriver.PathNotFoundError:
return false, nil
default:
return false, err
}
}
return true, nil
}
// Walk traverses a filesystem defined within driver, starting
// from the given path, calling f on each file
func Walk(driver storageDriver.StorageDriver, from string, f WalkFn) error {
children, err := driver.List(from)
if err != nil {
return err
}
for _, child := range children {
fileInfo, err := driver.Stat(child)
if err != nil {
return err
}
err = f(fileInfo)
skipDir := (err == ErrSkipDir)
if err != nil && !skipDir {
return err
}
if fileInfo.IsDir() && !skipDir {
Walk(driver, child, f)
}
}
return nil
}
// newFileWriter returns a prepared fileWriter for the driver and path. This
// could be considered similar to an "open" call on a regular filesystem.
func newFileWriter(ctx context.Context, driver storagedriver.StorageDriver, path string) (*fileWriter, error) {
fw := fileWriter{
driver: driver,
path: path,
ctx: ctx,
}
if fi, err := driver.Stat(ctx, path); err != nil {
switch err := err.(type) {
case storagedriver.PathNotFoundError:
// ignore, offset is zero
default:
return nil, err
}
} else {
if fi.IsDir() {
return nil, fmt.Errorf("cannot write to a directory")
}
fw.size = fi.Size()
}
return &fw, nil
}
func build(
conf *Config,
storageDriver storagedriver.StorageDriver,
kubeClient *client.Client,
fs sys.FS,
env sys.Env,
builderKey,
rawGitSha string) error {
dockerBuilderImagePullPolicy, err := k8s.PullPolicyFromString(conf.DockerBuilderImagePullPolicy)
if err != nil {
return err
}
slugBuilderImagePullPolicy, err := k8s.PullPolicyFromString(conf.SlugBuilderImagePullPolicy)
if err != nil {
return err
}
repo := conf.Repository
gitSha, err := git.NewSha(rawGitSha)
if err != nil {
return err
}
appName := conf.App()
repoDir := filepath.Join(conf.GitHome, repo)
buildDir := filepath.Join(repoDir, "build")
slugName := fmt.Sprintf("%s:git-%s", appName, gitSha.Short())
if err := os.MkdirAll(buildDir, os.ModeDir); err != nil {
return fmt.Errorf("making the build directory %s (%s)", buildDir, err)
}
tmpDir, err := ioutil.TempDir(buildDir, "tmp")
if err != nil {
return fmt.Errorf("unable to create tmpdir %s (%s)", buildDir, err)
}
defer func() {
if err := os.RemoveAll(tmpDir); err != nil {
log.Info("unable to remove tmpdir %s (%s)", tmpDir, err)
}
}()
client, err := controller.New(conf.ControllerHost, conf.ControllerPort)
if err != nil {
return err
}
// Get the application config from the controller, so we can check for a custom buildpack URL
appConf, err := hooks.GetAppConfig(client, conf.Username, appName)
if controller.CheckAPICompat(client, err) != nil {
return err
}
log.Debug("got the following config back for app %s: %+v", appName, appConf)
var buildPackURL string
if buildPackURLInterface, ok := appConf.Values["BUILDPACK_URL"]; ok {
if bpStr, ok := buildPackURLInterface.(string); ok {
log.Debug("found custom buildpack URL %s", bpStr)
buildPackURL = bpStr
}
}
_, disableCaching := appConf.Values["DEIS_DISABLE_CACHE"]
slugBuilderInfo := NewSlugBuilderInfo(appName, gitSha.Short(), disableCaching)
if slugBuilderInfo.DisableCaching() {
log.Debug("caching disabled for app %s", appName)
// If cache file exists, delete it
if _, err := storageDriver.Stat(context.Background(), slugBuilderInfo.CacheKey()); err == nil {
log.Debug("deleting cache %s for app %s", slugBuilderInfo.CacheKey(), appName)
if err := storageDriver.Delete(context.Background(), slugBuilderInfo.CacheKey()); err != nil {
return err
}
}
}
// build a tarball from the new objects
appTgz := fmt.Sprintf("%s.tar.gz", appName)
gitArchiveCmd := repoCmd(repoDir, "git", "archive", "--format=tar.gz", fmt.Sprintf("--output=%s", appTgz), gitSha.Short())
gitArchiveCmd.Stdout = os.Stdout
gitArchiveCmd.Stderr = os.Stderr
if err := run(gitArchiveCmd); err != nil {
return fmt.Errorf("running %s (%s)", strings.Join(gitArchiveCmd.Args, " "), err)
}
absAppTgz := fmt.Sprintf("%s/%s", repoDir, appTgz)
// untar the archive into the temp dir
tarCmd := repoCmd(repoDir, "tar", "-xzf", appTgz, "-C", fmt.Sprintf("%s/", tmpDir))
tarCmd.Stdout = os.Stdout
tarCmd.Stderr = os.Stderr
if err := run(tarCmd); err != nil {
return fmt.Errorf("running %s (%s)", strings.Join(tarCmd.Args, " "), err)
}
bType := getBuildTypeForDir(tmpDir)
usingDockerfile := bType == buildTypeDockerfile
appTgzdata, err := ioutil.ReadFile(absAppTgz)
if err != nil {
return fmt.Errorf("error while reading file %s: (%s)", appTgz, err)
}
log.Debug("Uploading tar to %s", slugBuilderInfo.TarKey())
if err := storageDriver.PutContent(context.Background(), slugBuilderInfo.TarKey(), appTgzdata); err != nil {
return fmt.Errorf("uploading %s to %s (%v)", absAppTgz, slugBuilderInfo.TarKey(), err)
}
var pod *api.Pod
var buildPodName string
image := appName
if usingDockerfile {
buildPodName = dockerBuilderPodName(appName, gitSha.Short())
registryLocation := conf.RegistryLocation
registryEnv := make(map[string]string)
if registryLocation != "on-cluster" {
registryEnv, err = getRegistryDetails(kubeClient, &image, registryLocation, conf.PodNamespace, conf.RegistrySecretPrefix)
if err != nil {
return fmt.Errorf("error getting private registry details %s", err)
}
image = image + ":git-" + gitSha.Short()
}
registryEnv["DEIS_REGISTRY_PROXY_PORT"] = conf.RegistryProxyPort
registryEnv["DEIS_REGISTRY_LOCATION"] = registryLocation
pod = dockerBuilderPod(
conf.Debug,
buildPodName,
conf.PodNamespace,
appConf.Values,
slugBuilderInfo.TarKey(),
gitSha.Short(),
slugName,
conf.StorageType,
conf.DockerBuilderImage,
conf.RegistryHost,
conf.RegistryPort,
registryEnv,
dockerBuilderImagePullPolicy,
)
} else {
buildPodName = slugBuilderPodName(appName, gitSha.Short())
cacheKey := ""
if !slugBuilderInfo.DisableCaching() {
cacheKey = slugBuilderInfo.CacheKey()
}
pod = slugbuilderPod(
conf.Debug,
buildPodName,
conf.PodNamespace,
appConf.Values,
slugBuilderInfo.TarKey(),
slugBuilderInfo.PushKey(),
cacheKey,
gitSha.Short(),
buildPackURL,
conf.StorageType,
conf.SlugBuilderImage,
slugBuilderImagePullPolicy,
)
}
log.Info("Starting build... but first, coffee!")
log.Debug("Starting pod %s", buildPodName)
json, err := prettyPrintJSON(pod)
if err == nil {
log.Debug("Pod spec: %v", json)
} else {
log.Debug("Error creating json representaion of pod spec: %v", err)
}
podsInterface := kubeClient.Pods(conf.PodNamespace)
newPod, err := podsInterface.Create(pod)
if err != nil {
return fmt.Errorf("creating builder pod (%s)", err)
}
pw := k8s.NewPodWatcher(kubeClient, "deis")
stopCh := make(chan struct{})
defer close(stopCh)
go pw.Controller.Run(stopCh)
if err := waitForPod(pw, newPod.Namespace, newPod.Name, conf.SessionIdleInterval(), conf.BuilderPodTickDuration(), conf.BuilderPodWaitDuration()); err != nil {
return fmt.Errorf("watching events for builder pod startup (%s)", err)
}
req := kubeClient.Get().Namespace(newPod.Namespace).Name(newPod.Name).Resource("pods").SubResource("log").VersionedParams(
&api.PodLogOptions{
Follow: true,
}, api.ParameterCodec)
rc, err := req.Stream()
if err != nil {
return fmt.Errorf("attempting to stream logs (%s)", err)
}
defer rc.Close()
size, err := io.Copy(os.Stdout, rc)
if err != nil {
return fmt.Errorf("fetching builder logs (%s)", err)
}
log.Debug("size of streamed logs %v", size)
log.Debug(
"Waiting for the %s/%s pod to end. Checking every %s for %s",
newPod.Namespace,
newPod.Name,
conf.BuilderPodTickDuration(),
conf.BuilderPodWaitDuration(),
)
// check the state and exit code of the build pod.
// if the code is not 0 return error
if err := waitForPodEnd(pw, newPod.Namespace, newPod.Name, conf.BuilderPodTickDuration(), conf.BuilderPodWaitDuration()); err != nil {
return fmt.Errorf("error getting builder pod status (%s)", err)
}
log.Debug("Done")
log.Debug("Checking for builder pod exit code")
buildPod, err := kubeClient.Pods(newPod.Namespace).Get(newPod.Name)
if err != nil {
return fmt.Errorf("error getting builder pod status (%s)", err)
}
for _, containerStatus := range buildPod.Status.ContainerStatuses {
state := containerStatus.State.Terminated
if state.ExitCode != 0 {
return fmt.Errorf("Build pod exited with code %d, stopping build.", state.ExitCode)
}
}
log.Debug("Done")
procType := deisAPI.ProcessType{}
if procType, err = getProcFile(storageDriver, tmpDir, slugBuilderInfo.AbsoluteProcfileKey(), bType); err != nil {
return err
}
log.Info("Build complete.")
quit := progress("...", conf.SessionIdleInterval())
log.Info("Launching App...")
if !usingDockerfile {
image = slugBuilderInfo.AbsoluteSlugObjectKey()
}
release, err := hooks.CreateBuild(client, conf.Username, conf.App(), image, gitSha.Short(), procType, usingDockerfile)
quit <- true
<-quit
if controller.CheckAPICompat(client, err) != nil {
return fmt.Errorf("publishing release (%s)", err)
}
log.Info("Done, %s:v%d deployed to Workflow\n", appName, release)
log.Info("Use 'deis open' to view this application in your browser\n")
log.Info("To learn more, use 'deis help' or visit https://deis.com/\n")
run(repoCmd(repoDir, "git", "gc"))
return nil
}
