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Elasticsearch subproject :server
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.transport;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.common.concurrent.CompletableContext;
/**
* Abstract Transport.Connection that provides common close logic.
*/
public abstract class CloseableConnection implements Transport.Connection {
private final CompletableContext closeContext = new CompletableContext<>();
@Override
public void addCloseListener(ActionListener listener) {
closeContext.addListener(ActionListener.toBiConsumer(listener));
}
@Override
public boolean isClosed() {
return closeContext.isDone();
}
@Override
public void close() {
// This method is safe to call multiple times as the close context will provide concurrency
// protection and only be completed once. The attached listeners will only be notified once.
closeContext.complete(null);
}
}