dubbo AvailableClusterInvoker 源码
dubbo AvailableClusterInvoker 代码
文件路径：/dubbo-cluster/src/main/java/org/apache/dubbo/rpc/cluster/support/AvailableClusterInvoker.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.support;
import org.apache.dubbo.rpc.Invocation;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.Result;
import org.apache.dubbo.rpc.RpcException;
import org.apache.dubbo.rpc.cluster.Directory;
import org.apache.dubbo.rpc.cluster.LoadBalance;
import java.util.List;
/**
* AvailableClusterInvoker
*
*/
public class AvailableClusterInvoker<T> extends AbstractClusterInvoker<T> {
public AvailableClusterInvoker(Directory<T> directory) {
super(directory);
}
@Override
public Result doInvoke(Invocation invocation, List<Invoker<T>> invokers, LoadBalance loadbalance) throws RpcException {
for (Invoker<T> invoker : invokers) {
if (invoker.isAvailable()) {
return invokeWithContext(invoker, invocation);
}
}
throw new RpcException("No provider available in " + invokers);
}
}
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