private RabbitMQDeclareSettings GetSettings(RabbitMQDeclareSettings settings)
{
settings ??= new RabbitMQDeclareSettings();
settings.Exchange ??= new ExchangeDeclareSettings();
settings.Queue ??= new QueueDeclareSettings();
var exchange = settings.Exchange;
if (exchange.Name.IsNull())
{
switch (exchange.Type)
{
case ExchangeType.Fanout:
exchange.Name = DefaultExchange.Fanout;
break;
case ExchangeType.Topic:
exchange.Name = DefaultExchange.Topic;
break;
case ExchangeType.Headers:
exchange.Name = DefaultExchange.Headers;
break;
default:
exchange.Name = DefaultExchange.Direct;
break;
}
}
return(settings);
}
/// <summary>
/// 发送单条消息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="queue">队列名</param>
/// <param name="routingKey">路由建</param>
/// <param name="message">消息体</param>
/// <param name="settings">配置</param>
public void Send <T>(string queue, T message, string routingKey = "", RabbitMQDeclareSettings settings = null)
{
Check.NotNull(queue, nameof(queue), "queue is null");
queue = GetQueueName(queue);
if (routingKey.IsNull())
{
routingKey = queue;
}
using var channel = _sendConnection.CreateModel();
settings = GetSettings(settings);
var exchange = settings.Exchange;
channel.ExchangeDeclare(exchange.Name, exchange.Type, exchange.Durable, exchange.AutoDelete, exchange.Arguments);
channel.QueueDeclare(queue, settings.Queue.Durable, settings.Queue.Exclusive, settings.Queue.AutoDelete, settings.Queue.Arguments);
channel.QueueBind(queue, exchange.Name, routingKey);
var body = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(message));
var properties = channel.CreateBasicProperties();
properties.Persistent = true;
channel.BasicPublish(exchange.Name, routingKey, properties, body);
}
/// <summary>
/// 使用事件接收消息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="queue">队列名称</param>
/// <param name="func">回调函数</param>
/// <param name="settings">定义设置</param>
public Consumer Receive <T>(string queue, Func <T, bool> func, RabbitMQDeclareSettings settings = null)
{
Check.NotNull(queue, nameof(queue), "queue is null");
Check.NotNull(func, nameof(func), "func is null");
queue = GetQueueName(queue);
var channel = _receiveConnection.CreateModel();
channel.BasicQos(0, 1, false);
settings = GetSettings(settings);
channel.QueueDeclare(queue, settings.Queue.Durable, settings.Queue.Exclusive, settings.Queue.AutoDelete, settings.Queue.Arguments);
var consumer = new EventingBasicConsumer(channel);
consumer.Received += (sender, eventArgs) =>
{
var message = JsonConvert.DeserializeObject <T>(Encoding.UTF8.GetString(eventArgs.Body.ToArray()));
if (func(message))
{
channel.BasicAck(eventArgs.DeliveryTag, false);
}
else
{
channel.BasicNack(eventArgs.DeliveryTag, false, true);
}
};
var tag = channel.BasicConsume(queue, false, consumer);
return(new Consumer
{
Channel = channel,
Tag = tag
});
}