C# Message.DropExpiredMessage方法代碼示例

 private static bool ExpireMessageIfExpired(Message message, MessagingStatisticsGroup.Phase phase)
 {
     if (message.IsExpired)
     {
         message.DropExpiredMessage(phase);
         return true;
     }
         return false;
 }

        internal async Task Invoke(IAddressable target, IInvokable invokable, Message message)
        {
            try
            {
                // Don't process messages that have already timed out
                if (message.IsExpired)
                {
                    message.DropExpiredMessage(MessagingStatisticsGroup.Phase.Invoke);
                    return;
                }

                RequestContext.Import(message.RequestContextData);
                if (Config.Globals.PerformDeadlockDetection && !message.TargetGrain.IsSystemTarget)
                {
                    UpdateDeadlockInfoInRequestContext(new RequestInvocationHistory(message));
                    // RequestContext is automatically saved in the msg upon send and propagated to the next hop
                    // in RuntimeClient.CreateMessage -> RequestContext.ExportToMessage(message);
                }

                object resultObject;
                try
                {
                    var request = (InvokeMethodRequest) message.BodyObject;

                    var invoker = invokable.GetInvoker(request.InterfaceId, message.GenericGrainType);

                    if (invoker is IGrainExtensionMethodInvoker
                        && !(target is IGrainExtension))
                    {
                        // We are trying the invoke a grain extension method on a grain 
                        // -- most likely reason is that the dynamic extension is not installed for this grain
                        // So throw a specific exception here rather than a general InvalidCastException
                        var error = String.Format(
                            "Extension not installed on grain {0} attempting to invoke type {1} from invokable {2}", 
                            target.GetType().FullName, invoker.GetType().FullName, invokable.GetType().FullName);
                        var exc = new GrainExtensionNotInstalledException(error);
                        string extraDebugInfo = null;
#if DEBUG
                        extraDebugInfo = new StackTrace().ToString();
#endif
                        logger.Warn(ErrorCode.Stream_ExtensionNotInstalled, 
                            string.Format("{0} for message {1} {2}", error, message, extraDebugInfo), exc);

                        throw exc;
                    }

                    // If the target has a grain-level interceptor or there is a silo-level interceptor, intercept the call.
                    var shouldCallSiloWideInterceptor = SiloProviderRuntime.Instance.GetInvokeInterceptor() != null && target is IGrain;
                    var intercepted = target as IGrainInvokeInterceptor;
                    if (intercepted != null || shouldCallSiloWideInterceptor)
                    {
                        // Fetch the method info for the intercepted call.
                        var implementationInvoker =
                            invocationMethodInfoMap.GetInterceptedMethodInvoker(target.GetType(), request.InterfaceId,
                                invoker);
                        var methodInfo = implementationInvoker.GetMethodInfo(request.MethodId);
                        if (shouldCallSiloWideInterceptor)
                        {
                            // There is a silo-level interceptor and possibly a grain-level interceptor.
                            var runtime = SiloProviderRuntime.Instance;
                            resultObject =
                                await runtime.CallInvokeInterceptor(methodInfo, request, target, implementationInvoker);
                        }
                        else
                        {
                            // The grain has an interceptor, but there is no silo-wide interceptor.
                            resultObject = await intercepted.Invoke(methodInfo, request, invoker);
                        }
                    }
                    else
                    {
                        // The call is not intercepted.
                        resultObject = await invoker.Invoke(target, request);
                    }
                }
                catch (Exception exc1)
                {
                    if (invokeExceptionLogger.IsVerbose || message.Direction == Message.Directions.OneWay)
                    {
                        invokeExceptionLogger.Warn(ErrorCode.GrainInvokeException,
                            "Exception during Grain method call of message: " + message, exc1);
                    }
                    if (message.Direction != Message.Directions.OneWay)
                    {
                        SafeSendExceptionResponse(message, exc1);
                    }
                    return;
                }

                if (message.Direction == Message.Directions.OneWay) return;

                SafeSendResponse(message, resultObject);
            }
            catch (Exception exc2)
            {
                logger.Warn(ErrorCode.Runtime_Error_100329, "Exception during Invoke of message: " + message, exc2);
                if (message.Direction != Message.Directions.OneWay)
                    SafeSendExceptionResponse(message, exc2);             
            }
        }

        /// <summary>
        /// Receive a new message:
        /// - validate order constraints, queue (or possibly redirect) if out of order
        /// - validate transactions constraints
        /// - invoke handler if ready, otherwise enqueue for later invocation
        /// </summary>
        /// <param name="message"></param>
        public void ReceiveMessage(Message message)
        {
            MessagingProcessingStatisticsGroup.OnDispatcherMessageReceive(message);
            // Don't process messages that have already timed out
            if (message.IsExpired)
            {
                logger.Warn(ErrorCode.Dispatcher_DroppingExpiredMessage, "Dropping an expired message: {0}", message);
                MessagingProcessingStatisticsGroup.OnDispatcherMessageProcessedError(message, "Expired");
                message.DropExpiredMessage(MessagingStatisticsGroup.Phase.Dispatch);
                return;
            }

            // check if its targeted at a new activation
            if (message.TargetGrain.IsSystemTarget)
            {
                MessagingProcessingStatisticsGroup.OnDispatcherMessageProcessedError(message, "ReceiveMessage on system target.");
                throw new InvalidOperationException("Dispatcher was called ReceiveMessage on system target for " + message);
            }

            if (errorInjection && ShouldInjectError(message))
            {
                if (logger.IsVerbose) logger.Verbose(ErrorCode.Dispatcher_InjectingRejection, "Injecting a rejection");
                MessagingProcessingStatisticsGroup.OnDispatcherMessageProcessedError(message, "ErrorInjection");
                RejectMessage(message, Message.RejectionTypes.Unrecoverable, null, "Injected rejection");                
                return;
            }

            try
            {
                Task ignore;
                ActivationData target = catalog.GetOrCreateActivation(
                    message.TargetAddress, 
                    message.IsNewPlacement, 
                    message.NewGrainType, 
                    message.GenericGrainType, 
                    message.RequestContextData,
                    out ignore);

                if (ignore != null)
                {
                    ignore.Ignore();
                }

                if (message.Direction == Message.Directions.Response)
                {
                    ReceiveResponse(message, target);
                }
                else // Request or OneWay
                {
                    // Silo is always capable to accept a new request. It's up to the activation to handle its internal state.
                    // If activation is shutting down, it will queue and later forward this request.
                    ReceiveRequest(message, target);
                }
            }
            catch (Exception ex)
            {
                try
                {
                    MessagingProcessingStatisticsGroup.OnDispatcherMessageProcessedError(message, "Non-existent activation");
              
                    var nea = ex as Catalog.NonExistentActivationException;
                    if (nea == null)
                    {
                        var str = String.Format("Error creating activation for {0}. Message {1}", message.NewGrainType, message);
                        logger.Error(ErrorCode.Dispatcher_ErrorCreatingActivation, str, ex);
                        throw new OrleansException(str, ex);
                    }

                    if (nea.IsStatelessWorker)
                    {
                        if (logger.IsVerbose) logger.Verbose(ErrorCode.Dispatcher_Intermediate_GetOrCreateActivation,
                           String.Format("Intermediate StatelessWorker NonExistentActivation for message {0}", message), ex);
                    }
                    else
                    {
                        logger.Info(ErrorCode.Dispatcher_Intermediate_GetOrCreateActivation,
                            String.Format("Intermediate NonExistentActivation for message {0}", message), ex);
                    }

                    ActivationAddress nonExistentActivation = nea.NonExistentActivation;

                    if (message.Direction != Message.Directions.Response)
                    {
                        // Un-register the target activation so we don't keep getting spurious messages.
                        // The time delay (one minute, as of this writing) is to handle the unlikely but possible race where
                        // this request snuck ahead of another request, with new placement requested, for the same activation.
                        // If the activation registration request from the new placement somehow sneaks ahead of this un-registration,
                        // we want to make sure that we don't un-register the activation we just created.
                        // We would add a counter here, except that there's already a counter for this in the Catalog.
                        // Note that this has to run in a non-null scheduler context, so we always queue it to the catalog's context
                        if (config.Globals.DirectoryLazyDeregistrationDelay > TimeSpan.Zero)
                        {
                            Scheduler.QueueWorkItem(new ClosureWorkItem(
//.........這裏部分代碼省略.........

        private void SendResponse(Message request, Response response)
        {
            // Don't process messages that have already timed out
            if (request.IsExpired)
            {
                request.DropExpiredMessage(MessagingStatisticsGroup.Phase.Respond);
                return;
            }

            dispatcher.SendResponse(request, response);
        }

        internal async Task Invoke(IAddressable target, IInvokable invokable, Message message)
        {
            try
            {
                // Don't process messages that have already timed out
                if (message.IsExpired)
                {
                    message.DropExpiredMessage(MessagingStatisticsGroup.Phase.Invoke);
                    return;
                }

                //MessagingProcessingStatisticsGroup.OnRequestProcessed(message, "Invoked");
                if (Message.WriteMessagingTraces)
                    message.AddTimestamp(Message.LifecycleTag.InvokeIncoming);

                RequestContext.ImportFromMessage(message);
                if (Config.Globals.PerformDeadlockDetection && !message.TargetGrain.IsSystemTarget)
                {
                    UpdateDeadlockInfoInRequestContext(new RequestInvocationHistory(message));
                    // RequestContext is automatically saved in the msg upon send and propagated to the next hop
                    // in RuntimeClient.CreateMessage -> RequestContext.ExportToMessage(message);
                }

                var invoker = invokable.GetInvoker(message.InterfaceId, message.GenericGrainType);

                object resultObject;
                try
                {
                    var request = (InvokeMethodRequest) message.BodyObject;

                    if (invoker is IGrainExtensionMethodInvoker
                        && !(target is IGrainExtension))
                    {
                        // We are trying the invoke a grain extension method on a grain 
                        // -- most likely reason is that the dynamic extension is not installed for this grain
                        // So throw a specific exception here rather than a general InvalidCastException
                        var error = String.Format(
                            "Extension not installed on grain {0} attempting to invoke type {1} from invokable {2}", 
                            target.GetType().FullName, invoker.GetType().FullName, invokable.GetType().FullName);
                        var exc = new GrainExtensionNotInstalledException(error);
                        string extraDebugInfo = null;
#if DEBUG
                        extraDebugInfo = new StackTrace().ToString();
#endif
                        logger.Warn(ErrorCode.Stream_ExtensionNotInstalled, 
                            string.Format("{0} for message {1} {2}", error, message, extraDebugInfo), exc);

                        throw exc;
                    }
                    resultObject = await invoker.Invoke(target, request.InterfaceId, request.MethodId, request.Arguments);
                }
                catch (Exception exc1)
                {
                    if (invokeExceptionLogger.IsVerbose || message.Direction == Message.Directions.OneWay)
                    {
                        invokeExceptionLogger.Warn(ErrorCode.GrainInvokeException,
                            "Exception during Grain method call of message: " + message, exc1);
                    }
                    if (message.Direction != Message.Directions.OneWay)
                    {
                        SafeSendExceptionResponse(message, exc1);
                    }
                    return;
                }

                if (message.Direction == Message.Directions.OneWay) return;

                SafeSendResponse(message, resultObject);
            }
            catch (Exception exc2)
            {
                logger.Warn(ErrorCode.Runtime_Error_100329, "Exception during Invoke of message: " + message, exc2);
                if (message.Direction != Message.Directions.OneWay)
                    SafeSendExceptionResponse(message, exc2);             
            }
        }