/// <summary>
/// Send the given object to the specified destination, converting the object
/// to a MSMQ message with a configured <see cref="IMessageConverter"/> and resolving the
/// destination name to a <see cref="MessageQueue"/> with an <see cref="IMessageQueueFactory"/>
/// The <see cref="MessagePostProcessorDelegate"/> callback allows for modification of the message after conversion.
/// </summary>
/// <param name="messageQueueObjectName">the name of the destination queue
/// to send this message to (to be resolved to an actual MessageQueue
/// by a IMessageQueueFactory)</param>
/// <param name="obj">the object to convert to a message</param>
/// <param name="messagePostProcessorDelegate">the callback to modify the message</param>
/// <exception cref="MessagingException">if thrown by MSMQ API methods</exception>
public void ConvertAndSend(string messageQueueObjectName, object obj,
MessagePostProcessorDelegate messagePostProcessorDelegate)
{
Message msg = MessageConverter.ToMessage(obj);
Message msgToSend = messagePostProcessorDelegate(msg);
Send(MessageQueueFactory.CreateMessageQueue(messageQueueObjectName), msgToSend);
}
/// <summary>
/// Ensure that the MessageQueueObject name is set and creates a
/// <see cref="DefaultMessageQueueFactory"/> if no <see cref="IMessageQueueFactory"/>
/// is specified.
/// </summary>
/// <remarks>Will attempt to create an instance of the DefaultMessageQueue to detect early
/// any configuraiton errors.</remarks>
/// <exception cref="System.Exception">
/// In the event of misconfiguration (such as the failure to set a
/// required property) or if initialization fails.
/// </exception>
public virtual void AfterPropertiesSet()
{
if (MessageQueueObjectName == null)
{
throw new ArgumentException("The DefaultMessageQueueObjectName property has not been set.");
}
if (messageQueueFactory == null)
{
DefaultMessageQueueFactory mqf = new DefaultMessageQueueFactory();
mqf.ApplicationContext = applicationContext;
messageQueueFactory = mqf;
}
//Create an instance so we can 'fail-fast' if there isn't an DefaultMessageQueue unde
MessageQueue mq = MessageQueueFactory.CreateMessageQueue(messageQueueObjectName);
}
static void Main(string[] args)
{
var config = new ConfigurationBuilder()
.AddInMemoryCollection(new Dictionary <string, string>
{
{ "QueueHostName", "localhost" },
{ "LogLevel", LogEventLevel.Information.ToString() }
})
.AddEnvironmentVariables()
.Build();
var logLevel = LogEventLevel.Warning;
Enum.TryParse(config["LogLevel"], out logLevel);
var logLevelSwitch = new Serilog.Core.LoggingLevelSwitch(logLevel);
Log.Logger = new LoggerConfiguration()
.MinimumLevel.ControlledBy(logLevelSwitch)
.WriteTo.LiterateConsole()
.CreateLogger();
var traderId = Guid.NewGuid().ToString("n").Substring(0, 8);
Log.Information("Starting Trade Bot {traderId}...", traderId);
var queueHost = config["QueueHost"];
Log.Verbose("Connecting to message host {queueHost}...", queueHost);
using (var connection = MessageQueueFactory.Connect(queueHost))
using (var channel = connection.CreateModel())
{
var queue = MessageQueueFactory.CreateMessageQueue(channel, config["QueueName"]);
var trader = new TradeGenerator(traderId);
while (true)
{
var trade = trader.GenerateTrade();
queue.Publish(trade.Type.ToString().ToLower(), trade);
Thread.Sleep(1000);
}
}
}
/// <summary>
/// Sends the specified message to the message queue using the
/// transactional settings as dicted by MessageQueue's Transactional property and
/// the current Spring managed ambient transaction.
/// </summary>
/// <param name="messageQueueObjectName">Name of the message queue object.</param>
/// <param name="message">The message.</param>
public void Send(string messageQueueObjectName, Message message)
{
Send(MessageQueueFactory.CreateMessageQueue(messageQueueObjectName), message);
}
/// <summary>
/// Receives a message on the specified queue using the transactional settings as dicted by MessageQueue's Transactional property and
/// the current Spring managed ambient transaction.
/// </summary>
/// <param name="messageQueueObjectName">Name of the message queue object.</param>
/// <returns></returns>
public Message Receive(string messageQueueObjectName)
{
return(MessageQueueFactory.CreateMessageQueue(messageQueueObjectName).Receive(ReceiveTimeout));
}
/// <summary>
/// Send the given object to the specified destination, converting the object
/// to a MSMQ message with a configured <see cref="IMessageConverter"/> and resolving the
/// destination name to a <see cref="MessageQueue"/> using a <see cref="IMessageQueueFactory"/>
/// </summary>
/// <param name="messageQueueObjectName">the name of the destination queue
/// to send this message to (to be resolved to an actual MessageQueue
/// by a IMessageQueueFactory)</param>
/// <param name="obj">the object to convert to a message</param>
/// <throws>NMSException if there is any problem</throws>
public void ConvertAndSend(string messageQueueObjectName, object obj)
{
Message msg = MessageConverter.ToMessage(obj);
Send(MessageQueueFactory.CreateMessageQueue(messageQueueObjectName), msg);
}
/// <summary>
/// Retrieves a MessageQueue instance given the MessageQueueObjectName
/// </summary>
protected override void DoInitialize()
{
messageQueue = MessageQueueFactory.CreateMessageQueue(MessageQueueObjectName);
//TODO would initialize resources for a seperate thread pool here.
}
private MessageQueue GetResponseQueue()
{
return(MessageQueueFactory.CreateMessageQueue(defaultResponseQueueObjectName));
}
