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Implement Cacher for watch in apiserver

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This commit is contained in:
Wojciech Tyczynski
2015-07-28 08:26:53 +02:00
parent 8dcbebae5e
commit e424da7d0d
5 changed files with 703 additions and 18 deletions
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24
pkg/client/cache/reflector.go vendored
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@@ -170,30 +170,27 @@ func (r *Reflector) resyncChan() (<-chan time.Time, func() bool) {
return t.C, t.Stop
}
func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) {
// Returns error if ListAndWatch didn't even tried to initialize watch.
func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
var resourceVersion string
resyncCh, cleanup := r.resyncChan()
defer cleanup()
list, err := r.listerWatcher.List()
if err != nil {
util.HandleError(fmt.Errorf("%s: Failed to list %v: %v", r.name, r.expectedType, err))
return
return fmt.Errorf("%s: Failed to list %v: %v", r.name, r.expectedType, err)
}
meta, err := meta.Accessor(list)
if err != nil {
util.HandleError(fmt.Errorf("%s: Unable to understand list result %#v", r.name, list))
return
return fmt.Errorf("%s: Unable to understand list result %#v", r.name, list)
}
resourceVersion = meta.ResourceVersion()
items, err := runtime.ExtractList(list)
if err != nil {
util.HandleError(fmt.Errorf("%s: Unable to understand list result %#v (%v)", r.name, list, err))
return
return fmt.Errorf("%s: Unable to understand list result %#v (%v)", r.name, list, err)
}
if err := r.syncWith(items, resourceVersion); err != nil {
util.HandleError(fmt.Errorf("%s: Unable to sync list result: %v", r.name, err))
return
return fmt.Errorf("%s: Unable to sync list result: %v", r.name, err)
}
r.setLastSyncResourceVersion(resourceVersion)
@@ -220,13 +217,13 @@ func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) {
}
}
}
return
return nil
}
if err := r.watchHandler(w, &resourceVersion, resyncCh, stopCh); err != nil {
if err != errorResyncRequested && err != errorStopRequested {
glog.Warningf("%s: watch of %v ended with: %v", r.name, r.expectedType, err)
}
return
return nil
}
}
}
@@ -277,6 +274,7 @@ loop:
util.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
continue
}
newResourceVersion := meta.ResourceVersion()
switch event.Type {
case watch.Added:
r.store.Add(event.Object)
@@ -290,8 +288,8 @@ loop:
default:
util.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
}
*resourceVersion = meta.ResourceVersion()
r.setLastSyncResourceVersion(*resourceVersion)
*resourceVersion = newResourceVersion
r.setLastSyncResourceVersion(newResourceVersion)
eventCount++
}
}