// Copy the reader to the response. The created WebSocket is closed after this
// method completes.
func (r *Reader) Copy(w http.ResponseWriter, req *http.Request) error {
go func() {
defer util.HandleCrash()
websocket.Server{Handshake: r.handshake, Handler: r.handle}.ServeHTTP(w, req)
}()
return <-r.err
}
// Run begins processing items, and will continue until a value is sent down stopCh.
// It's an error to call Run more than once.
// Run blocks; call via go.
func (c *Controller) Run(stopCh <-chan struct{}) {
defer util.HandleCrash()
r := cache.NewReflector(
c.config.ListerWatcher,
c.config.ObjectType,
c.config.Queue,
c.config.FullResyncPeriod,
)
c.reflectorMutex.Lock()
c.reflector = r
c.reflectorMutex.Unlock()
r.RunUntil(stopCh)
util.Until(c.processLoop, time.Second, stopCh)
}
// getOrExpire retrieves the object from the timestampedEntry if and only if it hasn't
// already expired. It kicks-off a go routine to delete expired objects from
// the store and sets exists=false.
func (c *ExpirationCache) getOrExpire(key string) (interface{}, bool) {
timestampedItem, exists := c.getTimestampedEntry(key)
if !exists {
return nil, false
}
if c.expirationPolicy.IsExpired(timestampedItem) {
glog.V(4).Infof("Entry %v: %+v has expired", key, timestampedItem.obj)
// Since expiration happens lazily on read, don't hold up
// the reader trying to acquire a write lock for the delete.
// The next reader will retry the delete even if this one
// fails; as long as we only return un-expired entries a
// reader doesn't need to wait for the result of the delete.
go func() {
defer util.HandleCrash()
c.cacheStorage.Delete(key)
}()
return nil, false
}
return timestampedItem.obj, true
}