public RabbitMqConsumerBase(IServiceProvider provider,
ILogger logger, IConnection connection, ISerializeProvider _serializer,
ConsumeOption option)
{
provider.Should().NotBeNull();
logger.Should().NotBeNull();
connection.Should().NotBeNull();
_serializer.Should().NotBeNull();
option.Should().NotBeNull();
this.provider = provider;
this.logger = logger;
this._serializer = _serializer;
this._option = option;
this._option.Valid();
this._channel = connection.CreateModel();
//qos
if (this._option.ConcurrencySize != null)
{
this._channel.BasicQos(prefetchSize: 0, prefetchCount: this._option.ConcurrencySize.Value, global: false);
}
//异步消费
this._consumer = new AsyncEventingBasicConsumer(this._channel);
//注册消费事件
this._consumer.Received += async(sender, args) =>
{
using var s = this.provider.CreateScope();
try
{
var res = await this.OnMessageReceived(new ConsumerMessage <T>(this._serializer, args));
if (!res)
{
throw new MsgException("未能消费");
}
if (!this._option.AutoAck)
{
this._channel.BasicAck(args.DeliveryTag, multiple: true);
}
}
catch (Exception e)
{
//log errors
this.logger.AddErrorLog($"rabbitmq消费发生异常:{e.Message}", e);
if (!this._option.AutoAck)
{
this._channel.BasicNack(args.DeliveryTag, multiple: true, requeue: true);
}
}
};
}
public RabbitMqConsumerBase(IServiceProvider provider, ILogger logger, IConnection connection, ConsumeOption option)
{
provider.Should().NotBeNull();
logger.Should().NotBeNull();
connection.Should().NotBeNull();
option.Should().NotBeNull();
this.provider = provider;
this.logger = logger;
this._option = option;
this._serializer = provider.ResolveSerializer();
this._channel = connection.CreateModel();
//qos
if (this._option.ConcurrencySize != null)
{
this._channel.BasicQos(prefetchSize: 0, prefetchCount: this._option.ConcurrencySize.Value, global: false);
}
//异步消费
this._consumer = new AsyncEventingBasicConsumer(this._channel);
//注册消费事件
this._consumer.Received += async(sender, args) =>
{
using var s = this.provider.CreateScope();
var body = this.__deserialize__(args.Body.ToArray());
if (body == null)
{
return;
}
var context = new BasicMessageConsumeContext <T>(body);
if (!this._option.AutoAck)
{
context.AckHandler = async(success) =>
{
if (success)
{
this._channel.BasicAck(args.DeliveryTag, multiple: true);
}
else
{
this._channel.BasicNack(args.DeliveryTag, multiple: true, requeue: true);
}
await Task.CompletedTask;
};
}
try
{
await this.OnMessageReceived(context);
await context.Ack(true);
}
catch (Exception e)
{
//log errors
this.logger.AddErrorLog($"rabbitmq消费发生异常:{e.Message}", e);
await context.Ack(false);
}
};
}