bool ILocalDispatcher.DispatchRemoteMsg(object msg, HandlerInfo[] handlers)
{
var hasListeners = dispatch_to_handlers(msg, handlers);
Interlocked.Increment(ref _counters.RemoteMsgs);
if (hasListeners)
Interlocked.Increment(ref _counters.RemoteMsgsDispatched);
return hasListeners;
}
private void dispatch_msg(HandlerInfo handler, object msg)
{
try
{
handler.Call(msg);
Interlocked.Increment(ref _counters.HandlersCalled);
}
catch (Exception ex)
{
_log.Warn(ex, "Failed to dispatch local message; topic='{0}'", handler.Topic.Name);
Interlocked.Increment(ref _counters.HandlersFailed);
}
}
private bool msg_should_be_filtered(HandlerInfo handler, object msg)
{
if (handler.Filter == null)
return false;
var shouldBeFiltered = false;
try
{
var filterIsMatched = handler.Filter(msg);
shouldBeFiltered = !filterIsMatched;
}
catch
{
Interlocked.Increment(ref _counters.FiltersFailed);
}
return shouldBeFiltered;
}
private bool dispatch_to_handlers(object msg, HandlerInfo[] handlers)
{
if (handlers.IsEmpty())
return false;
var hasListeners = false;
foreach (var handler in handlers)
{
if (msg_should_be_filtered(handler, msg))
{
Interlocked.Increment(ref _counters.HandlersFiltered);
continue;
}
hasListeners = true;
dispatch_msg(handler, msg);
}
return hasListeners;
}
bool ILocalRepo.RemoveHandler(HandlerInfo handler)
{
lock (_mutex) return _impl.RemoveHandler(handler);
}
void ILocalRepo.AddHandler(HandlerInfo handler)
{
lock (_mutex) _impl.AddHandler(handler);
}
bool ILocalRepo.RemoveHandler(HandlerInfo handler)
{
bool wasThere = _handlers.Remove(handler);
if (wasThere)
move_shanpshot_id();
return wasThere;
}
void ILocalRepo.AddHandler(HandlerInfo handler)
{
Validate.NotNull(handler);
Validate.NotNull(handler.Topic);
Validate.NotNull(handler.Call);
move_shanpshot_id();
_handlers.AddLast(handler);
}