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factory.go
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factory.go
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package factory
import (
"fmt"
"time"
"github.com/golang/glog"
kapi "github.com/GoogleCloudPlatform/kubernetes/pkg/api"
kerrors "github.com/GoogleCloudPlatform/kubernetes/pkg/api/errors"
kclient "github.com/GoogleCloudPlatform/kubernetes/pkg/client"
"github.com/GoogleCloudPlatform/kubernetes/pkg/client/cache"
"github.com/GoogleCloudPlatform/kubernetes/pkg/client/record"
"github.com/GoogleCloudPlatform/kubernetes/pkg/fields"
"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
kutil "github.com/GoogleCloudPlatform/kubernetes/pkg/util"
"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
buildapi "github.com/openshift/origin/pkg/build/api"
buildclient "github.com/openshift/origin/pkg/build/client"
buildcontroller "github.com/openshift/origin/pkg/build/controller"
strategy "github.com/openshift/origin/pkg/build/controller/strategy"
buildutil "github.com/openshift/origin/pkg/build/util"
osclient "github.com/openshift/origin/pkg/client"
controller "github.com/openshift/origin/pkg/controller"
imageapi "github.com/openshift/origin/pkg/image/api"
)
const maxRetries = 60
// limitedLogAndRetry stops retrying after maxTimeout, failing the build.
func limitedLogAndRetry(buildupdater buildclient.BuildUpdater, maxTimeout time.Duration) controller.RetryFunc {
return func(obj interface{}, err error, retries controller.Retry) bool {
kutil.HandleError(err)
if time.Since(retries.StartTimestamp.Time) < maxTimeout {
return true
}
build := obj.(*buildapi.Build)
build.Status = buildapi.BuildStatusFailed
build.Message = err.Error()
now := kutil.Now()
build.CompletionTimestamp = &now
glog.V(3).Infof("Giving up retrying Build %s/%s: %v", build.Namespace, build.Name, err)
if err := buildupdater.Update(build.Namespace, build); err != nil {
// retry update, but only on error other than NotFound
return !kerrors.IsNotFound(err)
}
return false
}
}
// BuildControllerFactory constructs BuildController objects
type BuildControllerFactory struct {
OSClient osclient.Interface
KubeClient kclient.Interface
BuildUpdater buildclient.BuildUpdater
DockerBuildStrategy *strategy.DockerBuildStrategy
SourceBuildStrategy *strategy.SourceBuildStrategy
CustomBuildStrategy *strategy.CustomBuildStrategy
// Stop may be set to allow controllers created by this factory to be terminated.
Stop <-chan struct{}
}
// Create constructs a BuildController
func (factory *BuildControllerFactory) Create() controller.RunnableController {
queue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
cache.NewReflector(&buildLW{client: factory.OSClient}, &buildapi.Build{}, queue, 2*time.Minute).Run()
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartRecordingToSink(factory.KubeClient.Events(""))
client := ControllerClient{factory.KubeClient, factory.OSClient}
buildController := &buildcontroller.BuildController{
BuildUpdater: factory.BuildUpdater,
ImageStreamClient: client,
PodManager: client,
BuildStrategy: &typeBasedFactoryStrategy{
DockerBuildStrategy: factory.DockerBuildStrategy,
SourceBuildStrategy: factory.SourceBuildStrategy,
CustomBuildStrategy: factory.CustomBuildStrategy,
},
Recorder: eventBroadcaster.NewRecorder(kapi.EventSource{Component: "build-controller"}),
}
return &controller.RetryController{
Queue: queue,
RetryManager: controller.NewQueueRetryManager(
queue,
cache.MetaNamespaceKeyFunc,
limitedLogAndRetry(factory.BuildUpdater, 30*time.Minute),
kutil.NewTokenBucketRateLimiter(1, 10)),
Handle: func(obj interface{}) error {
build := obj.(*buildapi.Build)
return buildController.HandleBuild(build)
},
}
}
// CreateDeleteController constructs a BuildDeleteController
func (factory *BuildControllerFactory) CreateDeleteController() controller.RunnableController {
client := ControllerClient{factory.KubeClient, factory.OSClient}
queue := cache.NewDeltaFIFO(cache.MetaNamespaceKeyFunc, nil, nil)
cache.NewReflector(&buildDeleteLW{client, queue}, &buildapi.Build{}, queue, 5*time.Minute).Run()
buildDeleteController := &buildcontroller.BuildDeleteController{
PodManager: client,
}
return &controller.RetryController{
Queue: queue,
RetryManager: controller.NewQueueRetryManager(
queue,
cache.MetaNamespaceKeyFunc,
limitedLogAndRetry(factory.BuildUpdater, 30*time.Minute),
kutil.NewTokenBucketRateLimiter(1, 10)),
Handle: func(obj interface{}) error {
deltas := obj.(cache.Deltas)
for _, delta := range deltas {
if delta.Type == cache.Deleted {
return buildDeleteController.HandleBuildDeletion(delta.Object.(*buildapi.Build))
}
}
return nil
},
}
}
// BuildPodControllerFactory construct BuildPodController objects
type BuildPodControllerFactory struct {
OSClient osclient.Interface
KubeClient kclient.Interface
BuildUpdater buildclient.BuildUpdater
// Stop may be set to allow controllers created by this factory to be terminated.
Stop <-chan struct{}
buildStore cache.Store
}
// Create constructs a BuildPodController
func (factory *BuildPodControllerFactory) Create() controller.RunnableController {
factory.buildStore = cache.NewStore(cache.MetaNamespaceKeyFunc)
cache.NewReflector(&buildLW{client: factory.OSClient}, &buildapi.Build{}, factory.buildStore, 2*time.Minute).Run()
queue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
cache.NewReflector(&podLW{client: factory.KubeClient}, &kapi.Pod{}, queue, 2*time.Minute).Run()
client := ControllerClient{factory.KubeClient, factory.OSClient}
buildPodController := &buildcontroller.BuildPodController{
BuildStore: factory.buildStore,
BuildUpdater: factory.BuildUpdater,
PodManager: client,
}
return &controller.RetryController{
Queue: queue,
RetryManager: controller.NewQueueRetryManager(
queue,
cache.MetaNamespaceKeyFunc,
func(obj interface{}, err error, retries controller.Retry) bool {
kutil.HandleError(err)
return retries.Count < maxRetries
},
kutil.NewTokenBucketRateLimiter(1, 10)),
Handle: func(obj interface{}) error {
pod := obj.(*kapi.Pod)
return buildPodController.HandlePod(pod)
},
}
}
// Create constructs a BuildPodDeleteController
func (factory *BuildPodControllerFactory) CreateDeleteController() controller.RunnableController {
client := ControllerClient{factory.KubeClient, factory.OSClient}
queue := cache.NewDeltaFIFO(cache.MetaNamespaceKeyFunc, nil, nil)
cache.NewReflector(&buildPodDeleteLW{client, queue}, &kapi.Pod{}, queue, 5*time.Minute).Run()
buildPodDeleteController := &buildcontroller.BuildPodDeleteController{
BuildStore: factory.buildStore,
BuildUpdater: factory.BuildUpdater,
}
return &controller.RetryController{
Queue: queue,
RetryManager: controller.NewQueueRetryManager(
queue,
cache.MetaNamespaceKeyFunc,
limitedLogAndRetry(factory.BuildUpdater, 30*time.Minute),
kutil.NewTokenBucketRateLimiter(1, 10)),
Handle: func(obj interface{}) error {
deltas := obj.(cache.Deltas)
for _, delta := range deltas {
if delta.Type == cache.Deleted {
return buildPodDeleteController.HandleBuildPodDeletion(delta.Object.(*kapi.Pod))
}
}
return nil
},
}
}
// ImageChangeControllerFactory can create an ImageChangeController which obtains ImageStreams
// from a queue populated from a watch of all ImageStreams.
type ImageChangeControllerFactory struct {
Client osclient.Interface
BuildConfigInstantiator buildclient.BuildConfigInstantiator
// Stop may be set to allow controllers created by this factory to be terminated.
Stop <-chan struct{}
}
// Create creates a new ImageChangeController which is used to trigger builds when a new
// image is available
func (factory *ImageChangeControllerFactory) Create() controller.RunnableController {
queue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
cache.NewReflector(&imageStreamLW{factory.Client}, &imageapi.ImageStream{}, queue, 2*time.Minute).Run()
store := cache.NewStore(cache.MetaNamespaceKeyFunc)
cache.NewReflector(&buildConfigLW{client: factory.Client}, &buildapi.BuildConfig{}, store, 2*time.Minute).Run()
imageChangeController := &buildcontroller.ImageChangeController{
BuildConfigStore: store,
BuildConfigInstantiator: factory.BuildConfigInstantiator,
Stop: factory.Stop,
}
return &controller.RetryController{
Queue: queue,
RetryManager: controller.NewQueueRetryManager(
queue,
cache.MetaNamespaceKeyFunc,
func(obj interface{}, err error, retries controller.Retry) bool {
kutil.HandleError(err)
if _, isFatal := err.(buildcontroller.ImageChangeControllerFatalError); isFatal {
return false
}
return retries.Count < maxRetries
},
kutil.NewTokenBucketRateLimiter(1, 10),
),
Handle: func(obj interface{}) error {
imageRepo := obj.(*imageapi.ImageStream)
return imageChangeController.HandleImageRepo(imageRepo)
},
}
}
// podEnumerator allows a cache.Poller to enumerate items in an api.PodList
type podEnumerator struct {
*kapi.PodList
}
// Len returns the number of items in the pod list.
func (pe *podEnumerator) Len() int {
if pe.PodList == nil {
return 0
}
return len(pe.Items)
}
// Get returns the item (and ID) with the particular index.
func (pe *podEnumerator) Get(index int) interface{} {
return &pe.Items[index]
}
type typeBasedFactoryStrategy struct {
DockerBuildStrategy *strategy.DockerBuildStrategy
SourceBuildStrategy *strategy.SourceBuildStrategy
CustomBuildStrategy *strategy.CustomBuildStrategy
}
func (f *typeBasedFactoryStrategy) CreateBuildPod(build *buildapi.Build) (*kapi.Pod, error) {
var pod *kapi.Pod
var err error
switch build.Parameters.Strategy.Type {
case buildapi.DockerBuildStrategyType:
pod, err = f.DockerBuildStrategy.CreateBuildPod(build)
case buildapi.SourceBuildStrategyType:
pod, err = f.SourceBuildStrategy.CreateBuildPod(build)
case buildapi.CustomBuildStrategyType:
pod, err = f.CustomBuildStrategy.CreateBuildPod(build)
default:
return nil, fmt.Errorf("no supported build strategy defined for Build %s/%s with type %s", build.Namespace, build.Name, build.Parameters.Strategy.Type)
}
if pod != nil {
if pod.Annotations == nil {
pod.Annotations = map[string]string{}
}
pod.Annotations[buildapi.BuildAnnotation] = build.Name
}
return pod, err
}
// panicIfStopped panics with the provided object if the channel is closed
func panicIfStopped(ch <-chan struct{}, message interface{}) {
select {
case <-ch:
panic(message)
default:
}
}
// podLW is a ListWatcher implementation for Pods.
type podLW struct {
client kclient.Interface
}
// List lists all Pods.
func (lw *podLW) List() (runtime.Object, error) {
return lw.client.Pods(kapi.NamespaceAll).List(labels.Everything(), fields.Everything())
}
// Watch watches all Pods.
func (lw *podLW) Watch(resourceVersion string) (watch.Interface, error) {
return lw.client.Pods(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
}
// buildLW is a ListWatcher implementation for Builds.
type buildLW struct {
client osclient.Interface
}
// List lists all Builds.
func (lw *buildLW) List() (runtime.Object, error) {
return lw.client.Builds(kapi.NamespaceAll).List(labels.Everything(), fields.Everything())
}
// Watch watches all Builds.
func (lw *buildLW) Watch(resourceVersion string) (watch.Interface, error) {
return lw.client.Builds(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
}
// buildDeleteLW is a ListWatcher implementation that watches for builds being deleted
type buildDeleteLW struct {
ControllerClient
store cache.Store
}
// List returns an empty list but adds delete events to the store for all Builds that have been deleted but still have pods.
func (lw *buildDeleteLW) List() (runtime.Object, error) {
glog.V(5).Info("Checking for deleted builds")
podList, err := lw.KubeClient.Pods(kapi.NamespaceAll).List(labels.Everything(), fields.Everything())
if err != nil {
glog.V(4).Infof("Failed to find any pods due to error %v", err)
return nil, err
}
for _, pod := range podList.Items {
if len(pod.Labels[buildapi.BuildLabel]) == 0 {
continue
}
glog.V(5).Infof("Found build pod %s/%s", pod.Namespace, pod.Name)
build, err := lw.Client.Builds(pod.Namespace).Get(pod.Labels[buildapi.BuildLabel])
if err != nil && !kerrors.IsNotFound(err) {
glog.V(4).Infof("Error getting build for pod %s/%s: %v", pod.Namespace, pod.Name, err)
return nil, err
}
if err != nil && kerrors.IsNotFound(err) {
build = nil
}
if build == nil {
deletedBuild := &buildapi.Build{
ObjectMeta: kapi.ObjectMeta{
Name: pod.Labels[buildapi.BuildLabel],
Namespace: pod.Namespace,
},
}
glog.V(4).Infof("No build found for build pod %s/%s, deleting pod", pod.Namespace, pod.Name)
err := lw.store.Delete(deletedBuild)
if err != nil {
glog.V(4).Infof("Error queuing delete event: %v", err)
}
} else {
glog.V(5).Infof("Found build %s/%s for pod %s", build.Namespace, build.Name, pod.Name)
}
}
return &buildapi.BuildList{}, nil
}
// Watch watches all Builds.
func (lw *buildDeleteLW) Watch(resourceVersion string) (watch.Interface, error) {
//return lw.client.Client.Builds(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
return lw.Client.Builds(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
}
// buildConfigLW is a ListWatcher implementation for BuildConfigs.
type buildConfigLW struct {
client osclient.Interface
}
// List lists all BuildConfigs.
func (lw *buildConfigLW) List() (runtime.Object, error) {
return lw.client.BuildConfigs(kapi.NamespaceAll).List(labels.Everything(), fields.Everything())
}
// Watch watches all BuildConfigs.
func (lw *buildConfigLW) Watch(resourceVersion string) (watch.Interface, error) {
return lw.client.BuildConfigs(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
}
// imageStreamLW is a ListWatcher for ImageStreams.
type imageStreamLW struct {
client osclient.Interface
}
// List lists all ImageStreams.
func (lw *imageStreamLW) List() (runtime.Object, error) {
return lw.client.ImageStreams(kapi.NamespaceAll).List(labels.Everything(), fields.Everything())
}
// Watch watches all ImageStreams.
func (lw *imageStreamLW) Watch(resourceVersion string) (watch.Interface, error) {
return lw.client.ImageStreams(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
}
// buildPodDeleteLW is a ListWatcher implementation that watches for Pods(that are associated with a Build) being deleted
type buildPodDeleteLW struct {
ControllerClient
store cache.Store
}
// List lists all Pods associated with a Build.
func (lw *buildPodDeleteLW) List() (runtime.Object, error) {
glog.V(5).Info("Checking for deleted build pods")
buildList, err := lw.Client.Builds(kapi.NamespaceAll).List(labels.Everything(), fields.Everything())
if err != nil {
glog.V(4).Infof("Failed to find any builds due to error %v", err)
return nil, err
}
for _, build := range buildList.Items {
glog.V(5).Infof("Found build %s/%s", build.Namespace, build.Name)
if buildutil.IsBuildComplete(&build) {
glog.V(5).Infof("Ignoring build %s/%s because it is complete", build.Namespace, build.Name)
continue
}
pod, err := lw.KubeClient.Pods(build.Namespace).Get(buildutil.GetBuildPodName(&build))
if err != nil && !kerrors.IsNotFound(err) {
glog.V(4).Infof("Error getting pod for build %s/%s: %v", build.Namespace, build.Name, err)
return nil, err
}
if (err != nil && kerrors.IsNotFound(err)) || pod.Labels[buildapi.BuildLabel] != build.Name {
pod = nil
}
if pod == nil {
deletedPod := &kapi.Pod{
ObjectMeta: kapi.ObjectMeta{
Name: buildutil.GetBuildPodName(&build),
Namespace: build.Namespace,
},
}
glog.V(4).Infof("No build pod found for build %s/%s, sending delete event for build pod", build.Namespace, build.Name)
err := lw.store.Delete(deletedPod)
if err != nil {
glog.V(4).Infof("Error queuing delete event: %v", err)
}
} else {
glog.V(5).Infof("Found build pod %s/%s for build %s", pod.Namespace, pod.Name, build.Name)
}
}
return &kapi.PodList{}, nil
}
// Watch watches all Pods for deletion
func (lw *buildPodDeleteLW) Watch(resourceVersion string) (watch.Interface, error) {
return lw.KubeClient.Pods(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
}
// ControllerClient implements the common interfaces needed for build controllers
type ControllerClient struct {
KubeClient kclient.Interface
Client osclient.Interface
}
// CreatePod creates a pod using the Kubernetes client.
func (c ControllerClient) CreatePod(namespace string, pod *kapi.Pod) (*kapi.Pod, error) {
return c.KubeClient.Pods(namespace).Create(pod)
}
// DeletePod destroys a pod using the Kubernetes client.
func (c ControllerClient) DeletePod(namespace string, pod *kapi.Pod) error {
return c.KubeClient.Pods(namespace).Delete(pod.Name, nil)
}
// GetPod gets a pod using the Kubernetes client.
func (c ControllerClient) GetPod(namespace, name string) (*kapi.Pod, error) {
return c.KubeClient.Pods(namespace).Get(name)
}
// GetImageStream retrieves an image repository by namespace and name
func (c ControllerClient) GetImageStream(namespace, name string) (*imageapi.ImageStream, error) {
return c.Client.ImageStreams(namespace).Get(name)
}