| public Next ( ) : RabbitMQ.Client.Events.BasicDeliverEventArgs | ||
| return | RabbitMQ.Client.Events.BasicDeliverEventArgs | |
///<summary>Retrieves the reply for the request with the given
///correlation ID from our internal Subscription.</summary>
///<remarks>
/// Currently requires replies to arrive in the same order as
/// the requests were sent out. Subclasses may override this
/// to provide more sophisticated behaviour.
///</remarks>
protected virtual BasicDeliverEventArgs RetrieveReply(string correlationId)
{
BasicDeliverEventArgs reply;
if (!Subscription.Next(TimeoutMilliseconds, out reply))
{
OnTimedOut();
return(null);
}
if (reply == null)
{
OnDisconnected();
return(null);
}
if (reply.BasicProperties.CorrelationId != correlationId)
{
throw new ProtocolViolationException
(string.Format("Wrong CorrelationId in reply; expected {0}, got {1}",
correlationId,
reply.BasicProperties.CorrelationId));
}
Subscription.Ack(reply);
return(reply);
}
public void ProcessMessages()
{
using (_connection = _factory.CreateConnection())
{
using (var channel = _connection.CreateModel())
{
Console.WriteLine("Listening for Topic <payment.purchaseorder>");
Console.WriteLine("------------------------------------------");
Console.WriteLine();
channel.ExchangeDeclare(ExchangeName, "topic");
channel.QueueDeclare(PurchaseOrderQueueName, true, false, false, null);
channel.QueueBind(PurchaseOrderQueueName, ExchangeName, "payment.purchaseorder");
channel.BasicQos(0, 10, false);
Subscription subscription = new Subscription(channel, PurchaseOrderQueueName, false);
while (true)
{
BasicDeliverEventArgs deliveryArguments = subscription.Next();
var message = (PurchaseOrder)deliveryArguments.Body.DeSerialize(typeof(PurchaseOrder));
var routingKey = deliveryArguments.RoutingKey;
Console.WriteLine("-- Purchase Order - Routing Key <{0}> : {1}, £{2}, {3}, {4}", routingKey, message.CompanyName, message.AmountToPay, message.PaymentDayTerms, message.PoNumber);
subscription.Ack(deliveryArguments);
}
}
}
}
public void ProcessMessages()
{
using (_connection = _factory.CreateConnection())
{
using (var channel = _connection.CreateModel())
{
Console.WriteLine("Listening for Topic <payment.*>");
Console.WriteLine("------------------------------");
Console.WriteLine();
channel.ExchangeDeclare(ExchangeName, "topic");
channel.QueueDeclare(AllQueueName, true, false, false, null);
channel.QueueBind(AllQueueName, ExchangeName, "payment.*");
channel.BasicQos(0, 10, false);
Subscription subscription = new Subscription(channel, AllQueueName, false);
while (true)
{
BasicDeliverEventArgs deliveryArguments = subscription.Next();
var message = deliveryArguments.Body.DeSerializeText();
Console.WriteLine("Message Received '{0}'", message);
subscription.Ack(deliveryArguments);
}
}
}
}
public void Subscribe(string queueName, Action<string> callback)
{
this.Subscriptions = this.Subscriptions ?? Enumerable.Empty<Task>();
this.Subscriptions = this.Subscriptions.Concat(new[] {
Task.Factory.StartNew(delegate {
var factory = new ConnectionFactory()
{
VirtualHost = "/",
HostName = "127.0.0.1",
Port = AmqpTcpEndpoint.UseDefaultPort
};
factory.UserName = "******";
factory.Password = "******";
using (var connection = factory.CreateConnection())
{
using (var channel = connection.CreateModel())
{
var subscription = new Subscription(channel, queueName, false);
while(true)
{
var eventArgs = subscription.Next();
var content = eventArgs == null ? string.Empty : Encoding.UTF8.GetString(eventArgs.Body);
subscription.Ack(eventArgs);
callback(content);
}
}
}
}
)});
}
public void StartListening(Action<byte[], IDictionary<string, object>> onMessage)
{
if (this.IsListening)
throw new InvalidOperationException("Client is already listening for messages");
Action subscribeAction =
() =>
{
try
{
subscriptionLifetimeResetEvent.Reset();
Subscription subscriptionHandler = new Subscription(this.Connection.GetModel(), this.QueueName);
int waitForMessagesTimeout = 100;
this.loopControlResetEvent.Reset();
while (!loopControlResetEvent.IsSet)
{
try
{
BasicDeliverEventArgs delivery = null;
if (subscriptionHandler.Next(waitForMessagesTimeout, out delivery))
{
if (delivery == null)
continue;
// Deliver message
var p = CreateProperties(delivery);
onMessage(delivery.Body, p);
}
}
catch (ThreadAbortException)
{
// Nothing to do, thread is being aborted.
// Set the reset event to leave gracefully
loopControlResetEvent.Set();
}
catch (Exception)
{
// Any other exception should be ignored.
}
}
// Close the subscription if its still open
if (subscriptionHandler.Model.IsOpen)
{
subscriptionHandler.Close();
}
}
finally
{
subscriptionLifetimeResetEvent.Set();
}
};
this.currentSubscription = subscribeAction;
}
public void TestChannelClosureIsObservableOnSubscription()
{
string q = Model.QueueDeclare();
Subscription sub = new Subscription(Model, q, true);
BasicDeliverEventArgs r1;
Assert.IsFalse(sub.Next(100, out r1));
Model.BasicPublish("", q, null, enc.GetBytes("a message"));
Model.BasicPublish("", q, null, enc.GetBytes("a message"));
BasicDeliverEventArgs r2;
Assert.IsTrue(sub.Next(1000, out r2));
Assert.IsNotNull(sub.Next());
Model.Close();
Assert.IsNull(sub.Next());
BasicDeliverEventArgs r3;
Assert.IsFalse(sub.Next(100, out r3));
}
private int OneConsumer()
{
using (var connection = Helpers.CreateConnectionToSecondaryVirtualHostOnAlternativePort())
using (var model = connection.CreateModel())
{
var queue = model.QueueDeclare();
model.QueueBind(queue, Constants.FederationExchangeName, "#");
var subscription = new Subscription(model, queue, true);
consumerReady.Set();
return subscription.Next().Body.Integer();
}
}
private static void blockingReceiveMessages(Subscription sub, long msgCount)
{
Console.WriteLine("Receiving {0} messages (using a Subscriber)", msgCount);
for (int i = 0; i < msgCount; ++i)
{
Console.WriteLine("Message {0}: {1} (via Subscription.Next())",
i, messageText(sub.Next()));
Console.WriteLine("Message {0} again: {1} (via Subscription.LatestEvent)",
i, messageText(sub.LatestEvent));
sub.Ack();
}
Console.WriteLine("Done.\n");
}
private void Consume()
{
bool autoAck = false;
//create a subscription
mSubscription = new Subscription(Model, QueueName, autoAck);
while (isConsuming)
{
BasicDeliverEventArgs e = mSubscription.Next();
byte[] body = e.Body;
onMessageReceived(body);
mSubscription.Ack(e);
}
}
static void Main()
{
// Set up the RabbitMQ connection and channel
var connectionFactory = new ConnectionFactory
{
HostName = "localhost",
Port = 5672,
UserName = "******",
Password = "******",
Protocol = Protocols.AMQP_0_9_1,
RequestedFrameMax = UInt32.MaxValue,
RequestedHeartbeat = UInt16.MaxValue
};
using (var connection = connectionFactory.CreateConnection())
{
using (var channel = connection.CreateModel())
{
// This instructs the channel not to prefetch more than one message
channel.BasicQos(0, 1, false);
// Create a new, durable exchange
channel.ExchangeDeclare("sample-ex", ExchangeType.Direct, true, false, null);
// Create a new, durable queue
channel.QueueDeclare("sample-queue", true, false, false, null);
// Bind the queue to the exchange
channel.QueueBind("sample-queue", "sample-ex", "optional-routing-key");
using (var subscription = new Subscription(channel, "sample-queue", false))
{
Console.WriteLine("Waiting for messages...");
var encoding = new UTF8Encoding();
while (channel.IsOpen)
{
BasicDeliverEventArgs eventArgs;
var success = subscription.Next(2000, out eventArgs);
if (success == false) continue;
var msgBytes = eventArgs.Body;
var message = encoding.GetString(msgBytes);
Console.WriteLine(message);
channel.BasicAck(eventArgs.DeliveryTag, false);
}
}
}
}
}
/// <remarks>
/// RabbitMq does not have a Peek feature, the solution is to dequeue all messages
/// without acknowledging them (noAck = true). After all messages have been read
/// we dispose the RabbitMqJobQueue causing the channel to close. All unack'd
/// messages then get requeued in order.
/// </remarks>
public IEnumerable<int> GetEnqueuedJobIds(string queue, int @from, int perPage)
{
using (var client = new RabbitMqJobQueue(new[] {queue}, _factory))
{
var consumer = new Subscription(client.Channel, queue, true);
List<int> jobIds = new List<int>();
BasicDeliverEventArgs delivery;
while (consumer.Next(1000, out delivery))
{
var body = Encoding.UTF8.GetString(delivery.Body);
jobIds.Add(Convert.ToInt32(body));
}
return jobIds.Skip(@from).Take(perPage);
}
}
public static IEnumerable<LogData> GetAllMessages()
{
using (IConnection connection = SetUpFixture.ConnectionFactory.CreateConnection())
{
using (IModel model = connection.CreateModel())
{
var subscription = new Subscription(model, SetUpFixture.QueueName);
BasicDeliverEventArgs basicDeliveryEventArgs;
while (subscription.Next(1000, out basicDeliveryEventArgs))
{
var logs = (Body) XmlSerializer.Deserialize(new MemoryStream(basicDeliveryEventArgs.Body));
foreach (var entry in logs.LogDatas)
{
yield return entry;
}
}
}
}
}
public void Listen()
{
Console.WriteLine("Creating channel...");
using (IModel model = conn.CreateModel())
{
var subscription = new Subscription(model, "queue", false);
//while (true)
//{
BasicDeliverEventArgs basicDeliveryEventArgs =
subscription.Next();
var command = StreamExtension.Deserialize<Vaccine.Core.Cqrs.Commands.DomainCommand>(basicDeliveryEventArgs.Body);
//Encoding.UTF8.GetString(basicDeliveryEventArgs.Body);
//Console.WriteLine(((CreateCommand)messageContent).Name);
bus.Send(command);
subscription.Ack(basicDeliveryEventArgs);
//}
}
}
public void ReceiveHeadersMessageReceiverOne(IModel model)
{
model.BasicQos(0, 1, false);
Subscription subscription = new Subscription(model, _headersQueueOne, false);
while (true)
{
BasicDeliverEventArgs deliveryArguments = subscription.Next();
StringBuilder messageBuilder = new StringBuilder();
String message = Encoding.UTF8.GetString(deliveryArguments.Body);
messageBuilder.Append("Message from queue: ").Append(message).Append(". ");
foreach (string headerKey in deliveryArguments.BasicProperties.Headers.Keys)
{
byte[] value = deliveryArguments.BasicProperties.Headers[headerKey] as byte[];
messageBuilder.Append("Header key: ").Append(headerKey).Append(", value: ").Append(Encoding.UTF8.GetString(value)).Append("; ");
}
Console.WriteLine(messageBuilder.ToString());
subscription.Ack(deliveryArguments);
}
}
public static void Main(string[] args)
{
var connectionFactory = new ConnectionFactory {HostName = Settings.RabbitMqHost};
using (var connection = connectionFactory.CreateConnection())
{
using (var model = connection.CreateModel())
{
var subscription = new Subscription(model, Settings.RabbitMqQueue, false);
while (true)
{
var basicDeliveryEventArgs = subscription.Next();
var messageContent = basicDeliveryEventArgs.Body.To<SimpleMessage>();
System.Console.WriteLine(messageContent.Content);
subscription.Ack(basicDeliveryEventArgs);
}
}
}
System.Console.ReadLine();
}
public void ProcessMessages()
{
using (_connection = _factory.CreateConnection())
{
using (var channel = _connection.CreateModel())
{
Console.WriteLine("Listening for Topic <payment.cardpayment>");
Console.WriteLine("-----------------------------------------");
Console.WriteLine();
channel.ExchangeDeclare(ExchangeName, "topic");
channel.QueueDeclare(CardPaymentQueueName,
true, false, false, null);
channel.QueueBind(CardPaymentQueueName, ExchangeName,
"payment.cardpayment");
channel.BasicQos(0, 10, false);
Subscription subscription = new Subscription(channel,
CardPaymentQueueName, false);
while (true)
{
BasicDeliverEventArgs deliveryArguments = subscription.Next();
var message =
(CardPayment)deliveryArguments.Body.DeSerialize(typeof(CardPayment));
var routingKey = deliveryArguments.RoutingKey;
Console.WriteLine("--- Payment - Routing Key <{0}> : {1} : {2}", routingKey, message.CardNumber, message.Amount);
subscription.Ack(deliveryArguments);
}
}
}
}
private IMessage Receive (IModel model, int timeout, bool doAck)
{
string finalName = model.QueueDeclare (QRef.Queue, false);
using (Subscription sub = new Subscription (model, finalName)) {
BasicDeliverEventArgs result;
if (sub.Next (timeout, out result)) {
IMessage m = helper.ReadMessage (QRef, result);
if (doAck)
sub.Ack (result);
return m;
} else {
throw new MonoMessagingException ("No Message Available");
}
}
}
public ICommand Publish(ICommand command, PublicationAddress receiver, TimeSpan? timeout = null)
{
if (!timeout.HasValue)
timeout = TimeSpan.MaxValue;
var props = this.Channel.CreateBasicProperties();
//props.AppId;
//props.ClusterId;
//props.CorrelationId;
props.DeliveryMode = Constants.Persistent;
//props.Expiration;
//props.Headers;
//props.MessageId;
//props.Priority;
//props.ProtocolClassId;
//props.ProtocolClassName;
//props.ReplyTo;
props.ReplyToAddress = new PublicationAddress(this.CmdExchange.ExchangeType, this.CmdExchange.Name, this.PrivateQueue.Name);
//props.Timestamp;
//props.UserId;
var reqBytes = CommandSerializer.Serialize(command);
props.ContentEncoding = CommandSerializer.ContentEncoding;
props.ContentType = CommandSerializer.ContentType;
props.Type = command.GetType().FullName;
// at this point, we're ready to send
// set up to receive the response before the send occurs
// so there's no chance it'll be missed
ICommand reply = null;
using (CancellationTokenSource cts = new CancellationTokenSource())
{
var ct = cts.Token;
Task replyTask = null;
if (command.CorrelationId.HasValue)
{
props.CorrelationId = command.CorrelationId.ToString();
replyTask = Task.Run(() =>
{
var autoAck = false;
using (var subscription = new Subscription(this.Channel, this.PrivateQueue.Name, autoAck))
{
var subscriptionTimeout = TimeSpan.FromMilliseconds(100d).Milliseconds;
while (!ct.IsCancellationRequested)
{
BasicDeliverEventArgs eventArgs = null;
subscription.Next(subscriptionTimeout, out eventArgs);
if (eventArgs != null && !ct.IsCancellationRequested)
{
reply = CommandDeserializer.Deserialize(eventArgs.Body) as ICommand;
if (reply != null && reply.CorrelationId == command.CorrelationId)
{
subscription.Ack(eventArgs);
break;
}
else
subscription.Model.BasicNack(eventArgs.DeliveryTag, false, true);
}
}
}
});
}
// now the receiver is set up, publish the command
this.Channel.BasicPublish(receiver, props, reqBytes);
//Console.WriteLine("{0} Command sent ({1})", command.GetType().Name, command.CorrelationId);
if (timeout < TimeSpan.MaxValue)
cts.CancelAfter(timeout.Value);
replyTask.Wait();
return reply;
}
}
private IMessage ReceiveWithMatcher (QueueReference qRef, int timeout, IsMatch matcher, bool ack)
{
IModel _model = Model;
string finalName = _model.QueueDeclare (qRef.Queue, false);
using (Subscription sub = new Subscription (_model, finalName)) {
BasicDeliverEventArgs result;
while (sub.Next (timeout, out result)) {
if (matcher (result)) {
IMessage m = helper.ReadMessage (qRef, result);
if (ack)
sub.Ack (result);
return m;
}
}
throw new MessageUnavailableException ("Message not available");
}
}
private void TestSubscriptionAction(SubscriptionAction action)
{
Model.BasicQos(0, 1, false);
string q = Model.QueueDeclare();
Subscription sub = new Subscription(Model, q, false);
Model.BasicPublish("", q, null, enc.GetBytes("a message"));
BasicDeliverEventArgs res = sub.Next();
Assert.IsNotNull(res);
action(sub);
QueueDeclareOk ok = Model.QueueDeclarePassive(q);
Assert.AreEqual(0, ok.MessageCount);
}
public void ReceiveTopicMessageReceiverTwo(IModel model)
{
model.BasicQos(0, 1, false);
Subscription subscription = new Subscription(model, _topicsQueueTwo, false);
while (true)
{
BasicDeliverEventArgs deliveryArguments = subscription.Next();
String message = Encoding.UTF8.GetString(deliveryArguments.Body);
Console.WriteLine("Message from queue: {0}", message);
subscription.Ack(deliveryArguments);
}
}
private void TestSubscriptionAction(Action<Subscription> action)
{
Model.BasicQos(0, 1, false);
string queueDeclare = Model.QueueDeclare();
var subscription = new Subscription(Model, queueDeclare, false);
Model.BasicPublish("", queueDeclare, null, encoding.GetBytes("a message"));
BasicDeliverEventArgs res = subscription.Next();
Assert.IsNotNull(res);
action(subscription);
QueueDeclareOk ok = Model.QueueDeclarePassive(queueDeclare);
Assert.AreEqual(0, ok.MessageCount);
}
private IMessage Receive (IModel model, int timeout,
bool doAck, IsMatch matcher)
{
string finalName = model.QueueDeclare (QRef.Queue, false);
using (Subscription sub = new Subscription (model, finalName)) {
BasicDeliverEventArgs result;
while (sub.Next (timeout, out result)) {
if (matcher (result)) {
IMessage m = helper.ReadMessage (QRef, result);
if (doAck)
sub.Ack (result);
return m;
}
}
throw new MessageUnavailableException ("Message not available");
}
}
private void QueChannel(CommandBus bus)
{
using (IModel model = conn.CreateModel())
{
var subscription = new Subscription(model, "queue", false);
while (true)
{
BasicDeliverEventArgs basicDeliveryEventArgs =
subscription.Next();
var @event = StreamExtension.Deserialize<Vaccine.Events.DomainEvent>(basicDeliveryEventArgs.Body);
//Encoding.UTF8.GetString(basicDeliveryEventArgs.Body);
Console.WriteLine(@event.GetType());
bus.Publish(@event);
subscription.Ack(basicDeliveryEventArgs);
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
try
{
var connectionFactory = new ConnectionFactory();
connectionFactory.HostName = ConfigurationManager.AppSettings["hostname"];
connectionFactory.UserName = ConfigurationManager.AppSettings["username"];
connectionFactory.Password = ConfigurationManager.AppSettings["password"];
connectionFactory.Port = Convert.ToInt32(ConfigurationManager.AppSettings["port"]);
connectionFactory.VirtualHost = ConfigurationManager.AppSettings["vhost"];
connectionFactory.Protocol = Protocols.FromEnvironment();
//Response.Write(connectionFactory.HostName + " " + connectionFactory.UserName + " " +
// connectionFactory.Port.ToString() + " " + connectionFactory.Password);
string message = "Hello!!";
//send message to queue
using (IConnection connection =
connectionFactory.CreateConnection())
{
using (IModel model = connection.CreateModel())
{
model.ExchangeDeclare("MyExchange", ExchangeType.Fanout, true);
model.QueueDeclare("MyQueue", true, false, false, new Dictionary<string, object>());
model.QueueBind("MyQueue", "MyExchange", "",
new Dictionary<string, object>());
IBasicProperties basicProperties = model.CreateBasicProperties();
model.BasicPublish("MyExchange", "", false, false,
basicProperties, Encoding.UTF8.GetBytes(message));
}
}
//consume message from queue
using (IConnection connection = connectionFactory.CreateConnection())
{
using (IModel model = connection.CreateModel())
{
var subscription = new Subscription(model, "MyQueue", false);
while (true)
{
BasicDeliverEventArgs basicDeliveryEventArgs =
subscription.Next();
string messageContent =
Encoding.UTF8.GetString(basicDeliveryEventArgs.Body);
//Response.Write(messageContent);
subscription.Ack(basicDeliveryEventArgs);
if (messageContent == message)
{
break;
}
}
}
}
Response.Write("OK");
}
catch (Exception ex)
{
Response.StatusCode = 500;
if (ex.InnerException != null)
Response.Write(ex.InnerException.Message);
Response.Write(ex.Message + Environment.NewLine + ex.StackTrace);
}
}
static void Main(string[] args)
{
try
{
ConnectionFactory cf = new ConnectionFactory();
cf.Uri = "amqps://<user>:<pass>@<server>:5671/";
cf.Ssl.CertPath = "C:\\keycert.p12";
cf.Ssl.CertPassphrase = "<ClientCertPass>";
cf.Ssl.Enabled = true;
using (IConnection conn = cf.CreateConnection())
{
Console.WriteLine("Connection established");
using (IModel ch = conn.CreateModel())
{
ch.BasicQos(0, 1, false); // noAck
Subscription sub = new Subscription(ch, "QueueName", true); // last param MUST BE true
while (true)
{
BasicDeliverEventArgs e = sub.Next();
byte[] body = e.Body;
Console.WriteLine(Encoding.UTF8.GetString(body));
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
