| /* |
| * 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 com.alibaba.dubbo.rpc.cluster.support; |
| |
| import com.alibaba.dubbo.rpc.Invocation; |
| import com.alibaba.dubbo.rpc.Invoker; |
| import com.alibaba.dubbo.rpc.Result; |
| import com.alibaba.dubbo.rpc.RpcException; |
| import com.alibaba.dubbo.rpc.cluster.Directory; |
| import com.alibaba.dubbo.rpc.cluster.LoadBalance; |
| |
| import java.util.List; |
| |
| /** |
| * AvailableCluster |
| * |
| */ |
| 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 invoker.invoke(invocation); |
| } |
| } |
| throw new RpcException("No provider available in " + invokers); |
| } |
| |
| } |