dubbo Rejector 源码
dubbo Rejector 代码
文件路径：/dubbo-common/src/main/java/org/apache/dubbo/common/concurrent/Rejector.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.common.concurrent;
import java.util.Queue;
/**
* RejectHandler, it works when you need to custom reject action.
*
* @see AbortPolicy
* @see DiscardPolicy
* @see DiscardOldestPolicy
*/
public interface Rejector<E> {
/**
* Method that may be invoked by a Queue when Queue has remained memory
* return true. This may occur when no more memory are available because their bounds would be exceeded.
*
* <p>In the absence of other alternatives, the method may throw an unchecked
* {@link RejectException}, which will be propagated to the caller.
*
* @param e the element requested to be added
* @param queue the queue attempting to add this element
*
* @throws RejectException if there is no more memory
*/
void reject(E e, Queue<E> queue);
}
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