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controller: cleanup workload controllers a bit

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* Switches glog.Errorf to utilruntime.HandleError in DS and RC controllers
* Drops a couple of unused variables in the DS, SS, and Deployment controllers
* Updates some comments
This commit is contained in:
Michail Kargakis
2017-02-12 17:42:26 +01:00
parent 7738f41b95
commit 10b4ec7b47
4 changed files with 31 additions and 42 deletions
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22
pkg/controller/deployment/deployment_controller.go
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@@ -54,15 +54,8 @@ import (
)
const (
// FullDeploymentResyncPeriod means we'll attempt to recompute the required replicas
// of all deployments.
// This recomputation happens based on contents in the local caches.
FullDeploymentResyncPeriod = 30 * time.Second
// We must avoid creating new replica set / counting pods until the replica set / pods store has synced.
// If it hasn't synced, to avoid a hot loop, we'll wait this long between checks.
StoreSyncedPollPeriod = 100 * time.Millisecond
// MaxRetries is the number of times a deployment will be retried before it is dropped out of the queue.
MaxRetries = 5
// maxRetries is the number of times a deployment will be retried before it is dropped out of the queue.
maxRetries = 5
)
func getDeploymentKind() schema.GroupVersionKind {
@@ -72,6 +65,7 @@ func getDeploymentKind() schema.GroupVersionKind {
// DeploymentController is responsible for synchronizing Deployment objects stored
// in the system with actual running replica sets and pods.
type DeploymentController struct {
// rsControl is used for adopting/releasing replica sets.
rsControl controller.RSControlInterface
client clientset.Interface
eventRecorder record.EventRecorder
@@ -310,12 +304,12 @@ func (dc *DeploymentController) deleteReplicaSet(obj interface{}) {
if !ok {
tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
if !ok {
utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v, could take up to %v before a deployment recreates/updates replicasets", obj, FullDeploymentResyncPeriod))
utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v", obj))
return
}
rs, ok = tombstone.Obj.(*extensions.ReplicaSet)
if !ok {
utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a ReplicaSet %#v, could take up to %v before a deployment recreates/updates replicasets", obj, FullDeploymentResyncPeriod))
utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a ReplicaSet %#v", obj))
return
}
}
@@ -336,12 +330,12 @@ func (dc *DeploymentController) deletePod(obj interface{}) {
if !ok {
tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
if !ok {
utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v, could take up to %v before a deployment recreates/updates pod", obj, FullDeploymentResyncPeriod))
utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v", obj))
return
}
pod, ok = tombstone.Obj.(*v1.Pod)
if !ok {
utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a pod %#v, could take up to %v before a deployment recreates/updates pods", obj, FullDeploymentResyncPeriod))
utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a pod %#v", obj))
return
}
}
@@ -438,7 +432,7 @@ func (dc *DeploymentController) handleErr(err error, key interface{}) {
return
}
if dc.queue.NumRequeues(key) < MaxRetries {
if dc.queue.NumRequeues(key) < maxRetries {
glog.V(2).Infof("Error syncing deployment %v: %v", key, err)
dc.queue.AddRateLimited(key)
return