dubbo ClusterInterceptor 源码

  • 2022-10-20
  • 浏览 (464)

dubbo ClusterInterceptor 代码

文件路径:/dubbo-cluster/src/main/java/org/apache/dubbo/rpc/cluster/interceptor/ClusterInterceptor.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.rpc.cluster.interceptor;

import org.apache.dubbo.common.extension.SPI;
import org.apache.dubbo.rpc.Filter;
import org.apache.dubbo.rpc.Invocation;
import org.apache.dubbo.rpc.Result;
import org.apache.dubbo.rpc.RpcException;
import org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker;

/**
 * Different from {@link Filter}, ClusterInterceptor works at the outmost layer, before one specific address/invoker is picked.
 */
@Deprecated
@SPI
public interface ClusterInterceptor {

    void before(AbstractClusterInvoker<?> clusterInvoker, Invocation invocation);

    void after(AbstractClusterInvoker<?> clusterInvoker, Invocation invocation);

    /**
     * Override this method or {@link #before(AbstractClusterInvoker, Invocation)}
     * and {@link #after(AbstractClusterInvoker, Invocation)} methods to add your own logic expected to be
     * executed before and after invoke.
     *
     * @param clusterInvoker
     * @param invocation
     * @return
     * @throws RpcException
     */
    default Result intercept(AbstractClusterInvoker<?> clusterInvoker, Invocation invocation) throws RpcException {
        return clusterInvoker.invoke(invocation);
    }

    interface Listener {

        void onMessage(Result appResponse, AbstractClusterInvoker<?> clusterInvoker, Invocation invocation);

        void onError(Throwable t, AbstractClusterInvoker<?> clusterInvoker, Invocation invocation);
    }
}

相关信息

dubbo 源码目录

相关文章

dubbo AddressListener 源码

dubbo CacheableRouterFactory 源码

dubbo Cluster 源码

dubbo ClusterInvoker 源码

dubbo ClusterScopeModelInitializer 源码

dubbo Configurator 源码

dubbo ConfiguratorFactory 源码

dubbo Constants 源码

dubbo Directory 源码

dubbo LoadBalance 源码

0  赞