dubbo ServerTripleReactorSubscriber 源码
dubbo ServerTripleReactorSubscriber 代码
文件路径：/dubbo-plugin/dubbo-reactive/src/main/java/org/apache/dubbo/reactive/ServerTripleReactorSubscriber.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.dubbo.reactive;
import org.apache.dubbo.rpc.CancellationContext;
import org.apache.dubbo.rpc.protocol.tri.CancelableStreamObserver;
import org.apache.dubbo.rpc.protocol.tri.observer.CallStreamObserver;
/**
* The Subscriber in server to passing the data produced by user publisher to responseStream.
*/
public class ServerTripleReactorSubscriber<T> extends AbstractTripleReactorSubscriber<T> {
@Override
public void subscribe(CallStreamObserver<T> downstream) {
super.subscribe(downstream);
if (downstream instanceof CancelableStreamObserver) {
CancelableStreamObserver<?> observer = (CancelableStreamObserver<?>) downstream;
final CancellationContext context;
if (observer.getCancellationContext() == null) {
context = new CancellationContext();
observer.setCancellationContext(context);
} else {
context = observer.getCancellationContext();
}
context.addListener(ctx -> super.cancel());
}
}
}
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