在Akka.net中,我们可以使用以下代码等待子Actor处理完所有待处理消息:
1.首先,需要定义一个方法以递归方式遍历所有子Actor并向它们发送一个特殊的处理消息:
public static class ActorExtensions
{
public static async Task WaitForChildrenToProcessMessages(this IActorRef actor)
{
var children = await actor.Ask(new Identify(null));
foreach (var child in children)
{
await child.WaitForChildrenToProcessMessages();
}
await actor.Ask
2.当我们向Actor发送DoneProcessingMessages消息时,Actor可以停止等待子Actor处理完所有消息:
public class MyActor : ReceiveActor
{
public MyActor()
{
Receive(msg =>
{
Context.Stop(Self);
Sender.Tell(new Done());
});
}
protected override void PreStart()
{
Start();
}
private void Start()
{
var child1 = Context.ActorOf(Props.Create(() => new MyChildActor()), "child1");
var child2 = Context.ActorOf(Props.Create(() => new MyChildActor()), "child2");
child1.Tell("MSG1");
child2.Tell("MSG2");
Self.WaitForChildrenToProcessMessages().Wait();
Console.WriteLine("All messages processed. Stopping.");
}
}
public class MyChildActor : ReceiveActor
{
public MyChildActor()
{
ReceiveAny(msg =>
{
Console.WriteLine($"Processing message {msg}");
});
}
}
在此示例中,我们定义了一个名为MyActor的Actor,它拥有两个子Actor(child1和child2),每个子Actor接收一条消息("MSG1"和"MSG2")。MyActor首先向子Actor发送消息,然后等待所有子Actor处理完所有消息。
当所有子Actor处理完所有消息后,MyActor使用Context.Stop()停