/// <summary>
/// 启动mq
/// </summary>
/// <param name="exceptionHandler"></param>
/// <returns></returns>
private bool StartMq(Action <Exception> exceptionHandler = null)
{
try
{
StopMq();
RabbitMqConfig mqConfig = GetCurrentUsedRmq();
string mqConfigStr = mqConfig.ToString();
#region 获取ConnectionFactory
ConnectionFactory conFactory = null;
if (!_conFactoryDict.TryGetValue(mqConfigStr, out conFactory))
{
//自动重连
conFactory = new ConnectionFactory()
{
UserName = mqConfig.UserName, Password = mqConfig.Password, VirtualHost = mqConfig.VirtualHost, HostName = mqConfig.HostIp, Port = mqConfig.Port, AutomaticRecoveryEnabled = true /*自动重连*/, NetworkRecoveryInterval = TimeSpan.FromMilliseconds(5753)
};
_conFactoryDict.AddOrUpdate(mqConfigStr, conFactory, (key, oldV) => conFactory);
}
#endregion
IConnection tempConnect = conFactory.CreateConnection();
lock (_locker)
{
_curUsedConnection = tempConnect;
}
return(true);
}
catch (Exception e)
{
exceptionHandler?.Invoke(e);
return(false);
}
}
/// <summary>
/// 启动mq
/// </summary>
/// <param name="exceptionHandler"></param>
/// <returns></returns>
private bool StartMq(Action <Exception> exceptionHandler = null)
{
try
{
StopMq();
RabbitMqConfig mqConfig = GetCurrentUsedRmq();
string mqConfigStr = mqConfig.ToString();
#region 获取ConnectionFactory
ConnectionFactory conFactory = null;
if (!_conFactoryDict.TryGetValue(mqConfigStr, out conFactory))
{
//自动重连
conFactory = new ConnectionFactory()
{
UserName = mqConfig.UserName, Password = mqConfig.Password, VirtualHost = mqConfig.VirtualHost, HostName = mqConfig.HostIp, Port = mqConfig.Port, AutomaticRecoveryEnabled = true /*自动重连*/, NetworkRecoveryInterval = TimeSpan.FromMilliseconds(5753)
};
_conFactoryDict.AddOrUpdate(mqConfigStr, conFactory, (key, oldV) => conFactory);
}
#endregion
#region 创建connection channel
IConnection tempConnect = conFactory.CreateConnection();
//定义连接事件
//连接阻塞的回调
tempConnect.ConnectionBlocked += ConnectionOnConnectionBlocked;
//连接未阻塞的回调
tempConnect.ConnectionUnblocked += ConnectionOnConnectionUnblocked;
//连接回调异常
tempConnect.CallbackException += ConnectionOnCallbackException;
//连接恢复错误
tempConnect.ConnectionRecoveryError += ConnectionOnConnectionRecoveryError;
//连接恢复成功
tempConnect.RecoverySucceeded += ConnectionOnRecoverySucceeded;
//连接关闭
tempConnect.ConnectionShutdown += ConnectionOnConnectionShutdown;
//创建channel
IModel tempChannel = tempConnect.CreateModel();
lock (_locker)
{
_curUsedConnection = tempConnect;
_curUsedChannel = tempChannel;
}
#endregion
#region 创建exchange
//判断是否需要创建exchange
bool needCreateExchange = this._needToCreateExchange;
if (needCreateExchange)
{
bool alreadyCreated = false;
if (_exchangeCreatedDict.TryGetValue(mqConfigStr, out alreadyCreated) && alreadyCreated)
{
needCreateExchange = false;
}
}
if (needCreateExchange)
{
tempChannel.ExchangeDeclare(exchange: this._exchangeName, type: this._exchangeType, durable: true, autoDelete: false, arguments: null);
_exchangeCreatedDict.AddOrUpdate(mqConfigStr, true, (key, oldV) => true);
}
#endregion
//使用的队列名，如果为空表示临时队列
string usedQueueName = string.Empty;
#region 创建queue
//是否需要创建队列
bool needCreateQueue = this._needToCreateQueue;
bool isTempQueue = false;//是否是临时队列
if (string.IsNullOrWhiteSpace(this._queueName))
{
needCreateQueue = true;
usedQueueName = string.Empty;
isTempQueue = true;
}
else
{
usedQueueName = this._queueName;
isTempQueue = false;
if (needCreateQueue)
{
var alreadyCreated = false;
if (_queueCreateDict.TryGetValue(mqConfigStr, out alreadyCreated) && alreadyCreated)
{
needCreateQueue = false;
}
}
}
if (isTempQueue)
{
//临时队列
//2、创建queue
//由MQ服务器创建一个amp.开头的(如amq.gen-JzTY20BRgKO-HjmUJj0wLg)非持久、排他、自动删除的队列
//连接断开后，服务器将删除该队列
string tempQueueName = tempChannel.QueueDeclare().QueueName;
usedQueueName = tempQueueName;
tempChannel.QueueBind(queue: usedQueueName, exchange: this._exchangeName, routingKey: _queueExchangeBinding, arguments: null);
}
else
{
if (needCreateQueue)
{
//定义创建队列时的参数
Dictionary <string, object> dictArgs = new Dictionary <string, object>();
//限制队列的最大长度，超过该长度将从队列头丢弃
dictArgs.Add("x-max-length", MaxQueueLength);
tempChannel.QueueDeclare(queue: usedQueueName, durable: true, exclusive: false,
autoDelete: false, arguments: dictArgs);
tempChannel.QueueBind(queue: usedQueueName, exchange: this._exchangeName, routingKey: _queueExchangeBinding, arguments: null);
_queueCreateDict.AddOrUpdate(mqConfigStr, true, (key, oldV) => true);
}
}
#endregion
#region 消息接收
//prefetchSize - maximum amount of content (measured in octets) that the server will deliver, 0 if unlimited
//prefetchCount - maximum number of messages that the server will deliver, 0 if unlimited
//global - true if the settings should be applied to the entire channel rather than each consumer
//每次取一个消息，消息大小不限制
//注释掉该行，将会使用Robbin轮盘分配，使用下面这行，只有空闲的Consumer接收消息
tempChannel.BasicQos(prefetchSize: 0, prefetchCount: 5, global: false);
//定义消息接收事件
EventingBasicConsumer consumer = new EventingBasicConsumer(tempChannel);
consumer.Received += ConsumerOnReceived;
//自动应答
tempChannel.BasicConsume(queue: usedQueueName, autoAck: true, consumer: consumer);
#endregion
return(true);
}
catch (Exception e)
{
exceptionHandler?.Invoke(e);
return(false);
}
}
