Generics Azure服务总线代理消息泵,等待多种消息类型
我有一个消息泵,看起来像这样:Generics Azure服务总线代理消息泵,等待多种消息类型,generics,azureservicebus,Generics,Azureservicebus,我有一个消息泵,看起来像这样: public class MessagePump<T> where T : class { public async Task Run( string inQueue, IMessageProcessor<T> processor, CancellationToken cancellationToken) { var connectionString = Settings.Se
public class MessagePump<T> where T : class
{
public async Task Run( string inQueue, IMessageProcessor<T> processor, CancellationToken cancellationToken)
{
var connectionString = Settings.ServiceBusConnectionString;
var factory = MessagingFactory.CreateFromConnectionString(connectionString);
var client = factory.CreateQueueClient(inQueue);
var msgOptions = new OnMessageOptions
{
AutoComplete = false,
MaxConcurrentCalls = 5,
AutoRenewTimeout = TimeSpan.FromMinutes(10)
};
await Task.Run(() =>
client.OnMessageAsync(
async message =>
{
await OnReceived(message, processor);
await message.CompleteAsync();
}, msgOptions),
cancellationToken);
}
static async Task OnReceived(BrokeredMessage brokeredMessage, IMessageProcessor<T> processor)
{
var message = brokeredMessage.GetBody<T>();
try
{
await processor.Process(message);
}
catch (Exception e)
{
var er = new ErrorLog();
await er.Create(new {error = e.Message});
}
}
}
公共类消息泵,其中T:class
{
公共异步任务运行(队列中的字符串、IMessageProcessor处理器、CancellationToken CancellationToken)
{
var connectionString=Settings.ServiceBusConnectionString;
var factory=MessagingFactory.CreateFromConnectionString(connectionString);
var client=factory.CreateQueueClient(inQueue);
var msgOptions=新的OnMessageOptions
{
自动完成=错误,
MaxConcurrentCalls=5,
AutoRenewTimeout=TimeSpan.FromMinutes(10)
};
等待任务。运行(()=>
client.OnMessageAsync(
异步消息=>
{
等待接收(消息、处理器);
等待消息。CompleteAsync();
},msgOptions),
取消令牌);
}
静态异步任务OnReceived(BrokeredMessage BrokeredMessage,IMessageProcessor处理器)
{
var message=brokeredMessage.GetBody();
尝试
{
等待处理器进程(消息);
}
捕获(例外e)
{
var er=新的错误日志();
wait er.Create(new{error=e.Message});
}
}
}
它是从Azure服务结构中的无状态服务调用的
internal sealed class Core : StatelessService
{
public Core(StatelessServiceContext context)
: base(context)
{ }
protected override IEnumerable<ServiceInstanceListener> CreateServiceInstanceListeners()
{
return new ServiceInstanceListener[0];
}
protected override async Task RunAsync(CancellationToken cancellationToken)
{
var inQueue = Settings.CoreQueue;
await new MessagePump<Message>().Run(inQueue, new Processor(), cancellationToken);
}
}
内部密封类核心:无状态服务
{
公共核心(无状态ServiceContext上下文)
:基本(上下文)
{ }
受保护的重写IEnumerable CreateServiceInstanceListeners()
{
返回新的ServiceInstanceListener[0];
}
受保护的覆盖异步任务RunAsync(CancellationToken CancellationToken)
{
var inQueue=Settings.CoreQueue;
等待新消息泵().Run(inQueue,新处理器(),cancellationToken);
}
}
如何创建处理多种类型消息的消息泵?有几个选项:
ContentType
代理消息的property
属性)。读取此元数据后反序列化为特定类型GetBody
,它只返回一个字节数组,并自己处理反序列化。如果您不控制发送方,可能是唯一的选项ContentType
代理消息的property
属性)。读取此元数据后反序列化为特定类型GetBody
,它只返回一个字节数组,并自己处理反序列化。如果您不控制发送方,可能是唯一的选项