/// <summary>
/// Notifies the cache about a watcher event.
/// </summary>
/// <param name="rc">The result code.</param>
/// <param name="onChange">The watcher event.</param>
/// <param name="cachePrefix">The cache prefix to use.</param>
/// <returns><c>true</c> if the caller needs to restart the watcher, <c>false</c> otherwise.</returns>
public bool NotifyWatcherEvent(RingMasterException.Code rc, WatchedEvent onChange, string cachePrefix)
{
if (onChange == null)
{
return(false);
}
if (onChange.EventType == WatchedEvent.WatchedEventType.WatcherRemoved)
{
this.Wipe(cachePrefix);
return(true);
}
if (onChange.KeeperState == WatchedEvent.WatchedEventKeeperState.SyncConnected)
{
if (onChange.EventType == WatchedEvent.WatchedEventType.NodeCreated ||
onChange.EventType == WatchedEvent.WatchedEventType.NodeDeleted)
{
this.Invalidate(cachePrefix, PrefixedClientCache.GetParent(onChange.Path));
}
this.Invalidate(cachePrefix, onChange.Path);
}
return(false);
}
private void CacheInvalidate(IRingMasterClientCache cache, IRingMasterRequest req)
{
if (cache == null || req == null)
{
return;
}
switch (req.RequestType)
{
case RingMasterRequestType.GetData:
case RingMasterRequestType.GetChildren:
case RingMasterRequestType.GetAcl:
case RingMasterRequestType.Exists:
return;
case RingMasterRequestType.Create:
{
cache.Invalidate(this.cachePrefix, req.Path);
cache.Invalidate(this.cachePrefix, PrefixedClientCache.GetParent(req.Path));
break;
}
case RingMasterRequestType.Delete:
{
RequestDelete delete = req as RequestDelete;
if (delete.IsCascade)
{
cache.Wipe(this.cachePrefix);
}
else
{
cache.Invalidate(this.cachePrefix, req.Path);
cache.Invalidate(this.cachePrefix, PrefixedClientCache.GetParent(req.Path));
}
break;
}
case RingMasterRequestType.Move:
{
RequestMove move = req as RequestMove;
cache.Invalidate(this.cachePrefix, move.Path);
cache.Invalidate(this.cachePrefix, PrefixedClientCache.GetParent(move.Path));
cache.Invalidate(this.cachePrefix, PrefixedClientCache.GetParent(move.PathDst));
break;
}
default:
{
cache.Invalidate(this.cachePrefix, req.Path);
AbstractRingMasterCompoundRequest list = req as AbstractRingMasterCompoundRequest;
if (list != null && list.Requests != null)
{
foreach (IRingMasterRequest child in list.Requests)
{
this.CacheInvalidate(cache, child);
}
}
break;
}
}
}
