private void ResolveAction(MessageExchange message)
{
switch (message.Action)
{
case ActionType.NewContact:
message.CreateNewContact(_eventAggregator);
break;
case ActionType.GetAllContacts:
_eventAggregator.GetEvent <GetAllContactsMessage>().Publish();
break;
case ActionType.EditContact:
message.EditContact(_eventAggregator);
break;
case ActionType.DeleteContact:
message.DeleteContact(_eventAggregator);
break;
case ActionType.SearchContactByName:
_eventAggregator.GetEvent <SearchContactsByNameMessage>().Publish(message.Content);
break;
case ActionType.SearchContactByTelephone:
_eventAggregator.GetEvent <SearchContactsByTelephoneMessage>().Publish(message.Content);
break;
default:
break;
}
}
/// <summary>
/// The result.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public static Task <MessageExchange> Result(MessageExchange exchange)
{
var completionSource = new TaskCompletionSource <MessageExchange>();
completionSource.SetResult(exchange);
return(completionSource.Task);
}
public Task <MessageExchange> Send(MessageExchange exchange)
{
if (this.disposed)
{
throw new ObjectDisposedException(typeof(FaultTolerantProducer).Name);
}
var errors = new List <Exception>();
for (var count = 0; count < this.attempts; count++)
{
this.logger.Trace($"Attempt to send #{count}");
try
{
var producer = this.selector.Next();
return(this.TrySend(exchange, producer));
}
catch (Exception ex)
{
this.logger.Warn($"Attempt #{count} to send a message has failed", ex);
errors.Add(ex);
}
}
throw new FailoverException($"Failed to send a message after {this.attempts} attempts", new AggregateException(errors))
{
Attempts = this.attempts
};
}
public void should_reset_retry_delay_on_producer_success()
{
const int RetryDelay = 5;
const int Attempts = 3;
const int ResetDelay = 0;
var tcs = new TaskCompletionSource<bool>();
tcs.SetResult(true);
var producerMock = new Mock<IProducer>();
producerMock
.Setup(p => p.Publish(It.IsAny<IMessage>()))
.Returns(tcs.Task);
var hash = producerMock.Object.GetHashCode();
var selector = new Mock<IProducerSelector>();
selector.Setup(s => s.Next()).Returns(() => producerMock.Object);
var producer = new FaultTolerantProducer(selector.Object, Attempts, RetryDelay, ResetDelay);
var message = new Message<DummyRequest>(MessageLabel.Any, new DummyRequest(1));
var exchange = new MessageExchange(message);
Assert.DoesNotThrow(() => producer.Send(exchange));
var delays = producer.Delays.ToList();
delays.Should().HaveCount(1);
delays.Should().Contain(kv => kv.Key == hash);
delays.First().Value.Should().Be(0);
}
public void should_increase_retry_delay_no_greater_then_max_delay_on_producer_failure()
{
const int RetryDelay = 5;
const int Attempts = 3;
const int ResetDelay = 10;
var producerMock = new Mock<IProducer>();
producerMock
.Setup(p => p.Publish(It.IsAny<IMessage>()))
.Throws(new Exception("Publish error"));
var hash = producerMock.Object.GetHashCode();
var selector = new Mock<IProducerSelector>();
selector.Setup(s => s.Next()).Returns(() => producerMock.Object);
var producer = new FaultTolerantProducer(selector.Object, Attempts, RetryDelay, ResetDelay);
var message = new Message<DummyRequest>(MessageLabel.Any, new DummyRequest(1));
var exchange = new MessageExchange(message);
Assert.Throws<FailoverException>(() => producer.Send(exchange));
var delays = producer.Delays.ToList();
delays.Should().HaveCount(1);
delays.Should().Contain(kv => kv.Key == hash);
delays.First().Value.Should().BeGreaterThan(0).And.BeLessOrEqualTo(RetryDelay);
}
public void should_reset_retry_delay_after_inactivity_period()
{
const int RetryDelay = 1;
const int Attempts = 1;
const int InactivityResetDelay = 3;
var tcs = new TaskCompletionSource<bool>();
tcs.SetResult(true);
var producerMock = new Mock<IProducer>();
producerMock
.Setup(p => p.Publish(It.IsAny<IMessage>()))
.Returns(tcs.Task);
var selector = new Mock<IProducerSelector>();
selector.Setup(s => s.Next()).Returns(() => producerMock.Object);
var producer = new FaultTolerantProducer(selector.Object, Attempts, RetryDelay, InactivityResetDelay);
var message = new Message<DummyRequest>(MessageLabel.Any, new DummyRequest(1));
var exchange = new MessageExchange(message);
Assert.DoesNotThrow(() => producer.Send(exchange));
Thread.Sleep(TimeSpan.FromSeconds(InactivityResetDelay + 1));
var delays = producer.Delays;
delays.Should().BeEmpty();
}
/// <summary>
/// Выполняет отправку сообщения.
/// </summary>
/// <param name="exchange">Информация об отправке.</param>
/// <returns>Задача ожидания отправки сообщения.</returns>
protected override Task <MessageExchange> InternalSend(MessageExchange exchange)
{
var producer = this.producerSelector.Next <Producer>();
if (exchange.IsRequest)
{
return(producer.Request(exchange.Out, exchange.ExpectedResponseType)
.ContinueWith(
t =>
{
if (t.IsFaulted)
{
exchange.Exception = t.Exception;
}
else
{
exchange.In = t.Result;
}
return exchange;
}));
}
return(producer.Publish(exchange.Out)
.ContinueWith(
t =>
{
if (t.IsFaulted)
{
exchange.Exception = t.Exception;
}
return exchange;
}));
}
private Task <MessageExchange> TrySend(MessageExchange exchange, IProducer producer)
{
if (exchange.IsRequest)
{
return(producer.Request(exchange.Out, exchange.ExpectedResponseType)
.ContinueWith(
t =>
{
if (t.IsFaulted)
{
exchange.Exception = t.Exception;
}
else
{
exchange.In = t.Result;
}
return exchange;
}));
}
return(producer.Publish(exchange.Out)
.ContinueWith(
t =>
{
if (t.IsFaulted)
{
exchange.Exception = t.Exception;
}
return exchange;
}));
}
public Task <MessageExchange> Try(MessageExchange exchange)
{
var errors = new List <Exception>();
for (var count = 0; count < this.attempts; count++)
{
this.logger.Trace($"Attempt to send #{count}");
var producer = this.selector.Next();
try
{
return(this.TrySend(exchange, producer));
}
catch (Exception ex)
{
this.logger.Warn(
$"Attempt #{count} to send a message on producer at [{producer.BrokerUrl}] has failed, will try the next producer",
ex);
errors.Add(ex);
}
}
throw new FailoverException($"Failed to send a message after {this.attempts} attempts", new AggregateException(errors))
{
Attempts = this.attempts
};
}
void LoadModule(System.Windows.Controls.Control addIn)
{
FormContainer doc = this.FindAddInContainer(addIn);
if (doc == null)
{
doc = CreateAddInContainer(addIn);
doc.Tag = addIn;
//注册模块。
this.m_AddIns.Add(doc.ExplorerControl);
//删除事件。
doc.FormClosed += (s, e) =>
{
if (this.m_AddIns.Contains(doc.ExplorerControl))
{
MessageExchange.Singleton.Unsubscribe(doc.ExplorerControl);
MessageExchange.RemoveNotify(doc.ExplorerControl);
this.m_AddIns.Remove(doc.ExplorerControl);
}
};
}
else
{
AddInActivate(addIn);
}
}
private void barDocuments_DockTabClosing(object sender, DevComponents.DotNetBar.DockTabClosingEventArgs e)
{
if (!XContext.AllowClose)
{
if (e.DockContainerItem.Tag.GetType() == typeof(StartWF))
{
e.Cancel = true;
}
return;
}
e.RemoveDockTab = true;
if (((Bar)sender).Items.Count == 1) // Remove bar if last item is closed...
{
dotNetBarManager1.Bars.Remove((Bar)sender);
}
//删除事件订阅。
if (this.m_AddIns.Contains(e.DockContainerItem.Tag))
{
MessageExchange.Singleton.Unsubscribe(e.DockContainerItem.Tag);
MessageExchange.RemoveNotify(e.DockContainerItem.Tag);
this.m_AddIns.Remove(e.DockContainerItem.Tag);
}
}
public void should_aggregate_attempt_errors()
{
const int Count = 5;
var producers = Enumerable.Range(0, Count).Select(i =>
{
var mock = new Mock <IProducer>();
mock
.Setup(p => p.Publish(It.IsAny <IMessage>()))
.Throws(new Exception("Publish error"));
mock
.Setup(p => p.BrokerUrl).Returns(() => $"fake.url.{DateTime.Now.Ticks}");
return(mock.Object);
});
var selector = new RoundRobinSelector(new ConcurrentQueue <IProducer>(producers));
var producer = new FaultTolerantProducer(selector, Count, 0, 0);
var message = new Message <DummyRequest>(MessageLabel.Any, new DummyRequest(1));
var exchange = new MessageExchange(message);
try
{
producer.Send(exchange);
Assert.Fail();
}
catch (FailoverException fex)
{
fex.InnerException.Should().BeOfType <AggregateException>();
var errors = (AggregateException)fex.InnerException;
errors.InnerExceptions.Count.Should().Be(Count);
}
}
/// <summary>
/// Обрабатывает сообщение с помощью зарегистрированных фильтров.
/// </summary>
/// <param name="message">Обрабатываемое сообщение.</param>
/// <returns>Задача обработки сообщения с помощью фильтров.</returns>
private Task ProcessFilter(IMessage message)
{
var exchange = new MessageExchange(message, null);
var invoker = this.GetMessageExchangeFilterInvoker();
return(invoker.Process(exchange));
}
static void Main(string[] args)
{
foreach (var arg in args)
{
MessageExchange.Write($"input {arg}");
}
var id = args.Count() > 0 ? args[0] : "0";
for (int i = 0; i < 2; i++)
{
Thread.Sleep(1000);
MessageExchange.Write($"id: {id}, hello from client {i}");
MessageExchange.Error($"id: {id}, error from client {i}");
}
var exception1 = new Exception("test1")
{
Source = Environment.StackTrace
};
var exception2 = new Exception("test2", exception1)
{
Source = Environment.StackTrace
};
MessageExchange.Exception(exception2);
throw exception2;
Console.Out.Flush();
Console.Error.Flush();
}
private static TimeSpan?GetTtl(CacheConfiguration config, MessageExchange exchange)
{
if (config.Ttl != null)
{
return(config.Ttl.Value);
}
var expiresHeader = Headers.GetString(exchange.In.Headers, Headers.Expires);
if (!string.IsNullOrEmpty(expiresHeader))
{
var expiration = Expires.Parse(expiresHeader);
if (expiration != null)
{
if (expiration.Period != null)
{
return(expiration.Period);
}
var now = DateTimeOffset.Now;
if (expiration.Date != null && expiration.Date.Value > now)
{
return(expiration.Date.Value - now);
}
}
}
return(null);
}
/// <summary>
/// Выполняет отправку сообщения.
/// </summary>
/// <param name="exchange">Информация об отправке.</param>
/// <returns>Задача ожидания отправки сообщения.</returns>
protected override Task <MessageExchange> InternalSend(MessageExchange exchange)
{
var attempts = this.senderOptions.GetFailoverAttempts() ?? AttemptsDefault;
var wrapper = new FaultTolerantProducer(this.producerSelector, attempts);
return(wrapper.Try(exchange));
}
private static MessageExchange GetExchange(string routeName = null)
{
var outMessage = new Message <TestRequest>(MessageLabel.From(!string.IsNullOrEmpty(routeName) ? routeName : RouteName), GetRequest());
var exchange = new MessageExchange(outMessage, typeof(TestResponse));
return(exchange);
}
/// <summary>
/// The continue.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task<MessageExchange> Continue(MessageExchange exchange)
{
if (!this.filterEnumerator.MoveNext())
{
return Filter.Result(exchange);
}
return this.filterEnumerator.Current.Process(exchange, this);
}
/// <summary>
/// The continue.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task <MessageExchange> Continue(MessageExchange exchange)
{
if (!this.filterEnumerator.MoveNext())
{
return(Filter.Result(exchange));
}
return(this.filterEnumerator.Current.Process(exchange, this));
}
public void TestDirittiConversazione()
{
//Creazione di una conversazione da parte di un operatore
Message message1 = new Message(operator1, "Salve, come devo comportarmi se X ha fatto Y?");
MessageExchange conversazione1 = new MessageExchange(message1);
//Controllo dei diritto di accesso alla conversazione
Assert.True(conversazione1.IsThisUserInTheConversation(operator1));
Assert.False(conversazione1.IsThisUserInTheConversation(operator2));
}
public MessageExchange NewConversation(Message message)
{
try
{
MessageExchange conversation = new MessageExchange(message);
messageExchanges.Add(conversation);
return(conversation);
}
catch (ArgumentException) { return(null); }
}
public void should_invoke_starting_with_recent()
{
var log = new List <string>();
var filters = new[] { new LoggingFilter("A", log), new LoggingFilter("B", log), new LoggingFilter("C", log) };
var exchange = new MessageExchange(new Message("msg".ToMessageLabel(), new object()));
var invoker = new MessageExchangeFilterInvoker(filters);
invoker.Process(exchange).
Wait(1.Seconds());
log.Should().
BeEquivalentTo(new object[] { "C: before", "B: before", "A: before", "A: after", "B: after", "C: after" });
}
private static void AddConversationTestData(MessageExchangesContext context)
{
Message firstMessage = new Message(users[0], "Testo di prova 1 messaggio");
MessageExchange conv = new MessageExchange(firstMessage);
//Message secondMessage = new Message(users[1], "Testo secondo");
//conv.AddMessage(secondMessage);
context.MessageExchanges.Add(conv);
context.SaveChanges();
}
private void SendServerMessage(ActionType actionType, object content)
{
var jsonContent = JsonConvert.SerializeObject(content);
var message = new MessageExchange(actionType, jsonContent);
var jsonMessage = JsonConvert.SerializeObject(message);
Writer.Write(jsonMessage);
_eventAggregator.GetEvent <AddConsoleMessage>().Publish("Waiting server response..\n\n");
var messageFromServer = Reader.ReadString();
_eventAggregator.GetEvent <AddConsoleMessage>().Publish(messageFromServer);
}
public void TestNuovaConversazione()
{
//Creazione di una conversazione da parte di un consulente
Message message1 = new Message(consultant1, "Messaggio di test");
Assert.Throws <ArgumentException>(() =>
{
MessageExchange conversazione1 = new MessageExchange(message1);
});
//Creazione di una conversazione da parte di un operatore
Message message2 = new Message(operator1, "Salve, come devo comportarmi se X ha fatto Y?");
MessageExchange conversazione2 = new MessageExchange(message2);
}
/// <summary>
/// Sends message using request-reply pattern.
/// <see cref="Headers.CorrelationId"/> header from <see cref="headers"/> parameter is used to correlate the request with the reply,
/// new one is generated if none is supplied.
/// </summary>
/// <param name="payload">Message payload.</param>
/// <param name="headers">Message headers.</param>
/// <typeparam name="T">Type of response.</typeparam>
/// <returns>Request processing task.</returns>
public Task <T> Request <T>(object payload, IDictionary <string, object> headers) where T : class
{
var message = new Message(this.Configuration.Label, headers, payload);
var exchange = new MessageExchange(message, typeof(T));
var invoker = this.GetMessageExchangeFilterInvoker();
return(invoker.Process(exchange)
.ContinueWith(
t =>
{
t.Result.ThrowIfFailed();
return (T)t.Result.In.Payload;
}));
}
public void should_delay_sending_on_producer_failure()
{
const int RetryDelay = 5;
const int Attempts = 3;
const int ResetDelay = 0;
var producerMock = new Mock <IProducer>();
producerMock
.Setup(p => p.Publish(It.IsAny <IMessage>()))
.Throws(new Exception("Publish error"));
var selector = new Mock <IProducerSelector>();
selector.Setup(s => s.Next()).Returns(() => producerMock.Object);
var producer = new FaultTolerantProducer(selector.Object, Attempts, RetryDelay, ResetDelay);
var message = new Message <DummyRequest>(MessageLabel.Any, new DummyRequest(1));
var exchange = new MessageExchange(message);
var action = new Action(() =>
{
try
{
producer.Send(exchange);
}
catch
{
// ignored
}
});
var overall = 0;
Enumerable
.Range(0, Attempts - 1)
.Aggregate(
0,
(prev, cur) =>
{
var time = Math.Min(2 * (prev + 1), RetryDelay);
overall += time;
return(time);
});
action.ExecutionTimeOf(a => a()).ShouldNotExceed(TimeSpan.FromSeconds(overall + 1));
}
private static MessageExchange TryCacheResponse(MessageExchange processedExchange, CacheConfiguration config)
{
if (!processedExchange.IsCompleteRequest)
{
return(processedExchange);
}
var ttl = GetTtl(config, processedExchange);
if (ttl != null)
{
config.Cache.Set(processedExchange.Out, processedExchange.In.Payload, ttl.Value);
}
return(processedExchange);
}
/// <summary>
/// Creates a test isolation server.
/// </summary>
/// <param name="ipcPortName">The IPC port name.</param>
/// <param name="linkId">The unique id of the client/server pair.</param>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="ipcPortName"/> is null.</exception>
public TestIsolationServer(string ipcPortName, Guid linkId)
{
if (ipcPortName == null)
{
throw new ArgumentNullException("ipcPortName");
}
serverChannel = new BinaryIpcServerChannel(ipcPortName);
clientChannel = new BinaryIpcClientChannel(ipcPortName + ".ServerCallback");
activeTasks = new Dictionary <Guid, IsolatedTaskState>();
MessageConsumer messageConsumer = new MessageConsumer()
.Handle <IsolatedTaskFinishedMessage>(HandleIsolatedTaskFinished);
messageExchange = new MessageExchange(messageConsumer);
serverChannel.RegisterService(GetMessageExchangeLinkServiceName(linkId), messageExchange);
}
/// <summary>
/// The process.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <param name="invoker">
/// The invoker.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task <MessageExchange> Process(MessageExchange exchange, MessageExchangeFilterInvoker invoker)
{
this._log.Add(this._name + ": before");
if (this._stop)
{
return(Filter.Result(exchange));
}
return(invoker.Continue(exchange).
ContinueWith(
t =>
{
this._log.Add(this._name + ": after");
return t.Result;
}));
}
/// <summary>
/// The continue.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task <MessageExchange> Continue(MessageExchange exchange)
{
if (!this.filterEnumerator.MoveNext())
{
return(Filter.Result(exchange));
}
var currentFilter = this.filterEnumerator.Current;
var currentFilterType = currentFilter.GetType();
if (this.filterDecorators.ContainsKey(currentFilterType))
{
return(this.filterDecorators[currentFilterType].Process(currentFilter, exchange, this));
}
return(currentFilter.Process(exchange, this));
}
/// <summary>
/// Если в кеше, есть ответное сообщение на входящее сообщение, тогда возвращает объект из кеша.
/// </summary>
/// <param name="exchange">Конвейер обработки сообщений.</param>
/// <param name="invoker">Фильтры вызывающий конвейер.</param>
/// <returns>Задача обработки сообщений.</returns>
public Task<MessageExchange> Process(MessageExchange exchange, MessageExchangeFilterInvoker invoker)
{
if (!exchange.IsIncompleteRequest)
{
return invoker.Continue(exchange);
}
string hash = this.hasher.CalculateHashOf(exchange.Out).ToString();
Maybe<object> cached = this.cacheProvider.Find<object>(hash);
if (cached.HasValue)
{
exchange.In = new Message(MessageLabel.Empty, cached.Value);
return Filter.Result(exchange);
}
return invoker.Continue(exchange)
.ContinueWith(
t =>
{
MessageExchange resultExchange = t.Result;
if (!resultExchange.IsCompleteRequest)
{
return resultExchange;
}
string expiresHeader = Headers.GetString(resultExchange.In.Headers, Headers.Expires);
if (!string.IsNullOrEmpty(expiresHeader))
{
Expires expiration = Expires.Parse(expiresHeader);
if (expiration.Period.HasValue)
{
this.cacheProvider.Put(hash, resultExchange.In.Payload, expiration.Period.Value);
}
else
{
this.cacheProvider.Put(hash, resultExchange.In.Payload, expiration.Date.Value);
}
}
return resultExchange;
});
}
/// <summary>
/// The process.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public virtual Task<MessageExchange> Process(MessageExchange exchange)
{
return this.Continue(exchange);
}
/// <summary>
/// The process.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <param name="invoker">
/// The invoker.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task<MessageExchange> Process(MessageExchange exchange, MessageExchangeFilterInvoker invoker)
{
return this._sendingAction(exchange).ContinueWith(_ => invoker.Continue(exchange).Result);
}
/// <summary>
/// The process.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <param name="invoker">
/// The invoker.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task<MessageExchange> Process(MessageExchange exchange, MessageExchangeFilterInvoker invoker)
{
this._log.Add(this._name + ": before");
if (this._stop)
{
return Filter.Result(exchange);
}
return invoker.Continue(exchange).
ContinueWith(
t =>
{
this._log.Add(this._name + ": after");
return t.Result;
});
}
public void should_invoke_starting_with_recent()
{
var log = new List<string>();
var filters = new[] { new LoggingFilter("A", log), new LoggingFilter("B", log), new LoggingFilter("C", log) };
var exchange = new MessageExchange(new Message("msg".ToMessageLabel(), new object()));
var invoker = new MessageExchangeFilterInvoker(filters);
invoker.Process(exchange).
Wait(1.Seconds());
log.Should().
BeEquivalentTo(new object[] { "C: before", "B: before", "A: before", "A: after", "B: after", "C: after" });
}
/// <summary>
/// The result.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public static Task<MessageExchange> Result(MessageExchange exchange)
{
var completionSource = new TaskCompletionSource<MessageExchange>();
completionSource.SetResult(exchange);
return completionSource.Task;
}
/// <summary>
/// Выполняет отправку сообщения.
/// </summary>
/// <param name="exchange">Информация об отправке.</param>
/// <returns>Задача ожидания отправки сообщения.</returns>
protected override Task<MessageExchange> InternalSend(MessageExchange exchange)
{
this.EnsureProducerIsReady();
if (exchange.IsRequest)
{
return this.producer.Request(exchange.Out, exchange.ExpectedResponseType)
.ContinueWith(
t =>
{
if (t.IsFaulted)
{
exchange.Exception = t.Exception;
}
else
{
exchange.In = t.Result;
}
return exchange;
});
}
return this.producer.Publish(exchange.Out)
.ContinueWith(
t =>
{
if (t.IsFaulted)
{
exchange.Exception = t.Exception;
}
return exchange;
});
}
