/// <summary>
/// 发送消息
/// </summary>
/// <param name="message">消息</param>
/// <param name="routingKey">路由key</param>
/// <returns></returns>
public SendResult SendMessage(Message message, string routingKey)
{
if (_isRunning == 0)
{
return(new SendResult(SendStatus.Failed, null, "Couldn't send message when is not running."));
}
if (message == null)
{
return(new SendResult(SendStatus.Failed, null, "Message is null."));
}
if (!_topics.ContainsKey(message.Topic))
{
return(new SendResult(SendStatus.Failed, null, $"Topic {message.Topic} not registered."));
}
IRabbitMQChannel channel = null;
try
{
var queueCount = _topics[message.Topic];
var queueId = string.IsNullOrEmpty(routingKey) ? 0 : (Crc16.GetHashCode(routingKey) % queueCount);
var messageId = Guid.NewGuid().ToString();
var createdTime = message.CreatedTime == DateTime.MinValue ? DateTime.Now : message.CreatedTime;
if (_channelPool.TryDequeue(out Tuple <DateTime, IRabbitMQChannel> item))
{
channel = item.Item2;
}
else
{
channel = _amqpConnection.CreateModel();
channel.ConfirmSelect();
}
var properties = channel.CreateBasicProperties();
properties.Persistent = true;
properties.ContentType = message.ContentType ?? string.Empty;
properties.MessageId = Guid.NewGuid().ToString();
properties.Type = message.Tag ?? string.Empty;
properties.Timestamp = new AmqpTimestamp(DateTime2UnixTime.ToUnixTime(createdTime));
if (_delayedMessageEnabled && message.DelayedMilliseconds > 0)
{
properties.Headers = new Dictionary <string, object>
{
{ "x-delay", message.DelayedMilliseconds }
};
}
channel.BasicPublish(exchange: _delayedMessageEnabled && message.DelayedMilliseconds > 0 ? $"{message.Topic}-delayed" : message.Topic,
routingKey: queueId.ToString(),
mandatory: true,
basicProperties: properties,
body: message.Body);
if (!channel.WaitForConfirms(_sendMsgTimeout, out bool timedOut))
{
return(new SendResult(timedOut ? SendStatus.Timeout : SendStatus.Failed, null, "Wait for confirms failed."));
}
var storeResult = new MessageStoreResult(messageId, message.Code, message.Topic, queueId, createdTime, message.Tag);
return(new SendResult(SendStatus.Success, storeResult, null));
}
catch (Exception ex)
{
throw new System.IO.IOException("Send message has exception.", ex);
}
finally
{
if (channel != null)
{
_channelPool.Enqueue(new Tuple <DateTime, IRabbitMQChannel>(DateTime.Now, channel));
}
}
}