internal static void DeclareExchangeForConfiguration(this IModel channel, RMQMessagingGatewayConfigurationSection configuration)
{
if (configuration.Exchange.SupportDelay)
channel.ExchangeDeclare(configuration.Exchange.Name, "x-delayed-message", configuration.Exchange.Durable, autoDelete: false, arguments: new Dictionary<string, object> { { "x-delayed-type", "direct" } });
else
channel.ExchangeDeclare(configuration.Exchange.Name, ExchangeType.Direct, configuration.Exchange.Durable);
}
private TestRMQListener(string channelName, RMQMessagingGatewayConfigurationSection configuration)
{
_channelName = channelName;
rMQMessagingGatewayConfigurationSection = configuration;
_connectionFactory = new ConnectionFactory {Uri = configuration.AMPQUri.Uri.ToString()};
_connection = _connectionFactory.CreateConnection();
_channel = _connection.CreateModel();
_channel.DeclareExchangeForConfiguration(configuration);
_channel.QueueDeclare(_channelName, false, false, false, null);
_channel.QueueBind(_channelName, configuration.Exchange.Name, _channelName);
}
/// <summary>
/// Initializes a new instance of the <see cref="ConnectionPolicyFactory"/> class.
/// Use if you need to inject a test logger
/// </summary>
/// <param name="logger">The logger.</param>
/// <param name="configurationSection"></param>
public ConnectionPolicyFactory(ILog logger, RMQMessagingGatewayConfigurationSection configurationSection)
{
_logger = logger;
var configuration = configurationSection;
int retries = configuration.AMPQUri.ConnectionRetryCount;
int retryWaitInMilliseconds = configuration.AMPQUri.RetryWaitInMilliseconds;
int circuitBreakerTimeout = configuration.AMPQUri.CircuitBreakTimeInMilliseconds;
RetryPolicy = Policy.Handle<BrokerUnreachableException>()
.Or<Exception>()
.WaitAndRetry(
retries,
retryAttempt => TimeSpan.FromMilliseconds(retryWaitInMilliseconds * Math.Pow(2, retryAttempt)),
(exception, timeSpan, context) =>
{
if (exception is BrokerUnreachableException)
{
_logger.WarnException(
"RMQMessagingGateway: BrokerUnreachableException error on connecting to queue {0} exchange {1} on connection {2}. Will retry {3} times",
exception,
context["queueName"],
configuration.Exchange.Name,
configuration.AMPQUri.GetSanitizedUri(),
retries);
}
else
{
logger.WarnException(
"RMQMessagingGateway: Exception on connection to queue {0} via exchange {1} on connection {2}",
exception,
context["queueName"],
configuration.Exchange.Name,
configuration.AMPQUri.GetSanitizedUri());
throw exception;
}
});
CircuitBreakerPolicy = Policy.Handle<BrokerUnreachableException>().CircuitBreaker(1, TimeSpan.FromMilliseconds(circuitBreakerTimeout));
}
public RMQMessagingGateway(ILog logger)
{
this.logger = logger;
configuration = RMQMessagingGatewayConfigurationSection.GetConfiguration();
connectionFactory = new ConnectionFactory{Uri = configuration.AMPQUri.Uri.ToString()};
}
private void PublishMessage(Message message, IModel channel, RMQMessagingGatewayConfigurationSection configuration, IBasicProperties basicProperties)
{
//publish message
channel.BasicPublish(configuration.Exchange.Name, message.Header.Topic, false, false, basicProperties, Encoding.UTF8.GetBytes(message.Body.Value));
}
private void DeclareExchange(IModel channel, RMQMessagingGatewayConfigurationSection configuration)
{
//desired state configuration of the exchange
channel.ExchangeDeclare(configuration.Exchange.Name, ExchangeType.Direct, false);
}
private MessageGateway(ILog logger, RMQMessagingGatewayConfigurationSection configuration)
{
Logger = logger;
Configuration = configuration;
var connectionPolicyFactory = new ConnectionPolicyFactory(logger, Configuration);
_retryPolicy = connectionPolicyFactory.RetryPolicy;
_circuitBreakerPolicy = connectionPolicyFactory.CircuitBreakerPolicy;
_connectionFactory = new ConnectionFactory { Uri = Configuration.AMPQUri.Uri.ToString(), RequestedHeartbeat = 30 };
DelaySupported = (this is IAmAMessageGatewaySupportingDelay) && Configuration.Exchange.SupportDelay;
}
