| /*
|
| * Copyright 1999-2011 Alibaba Group.
|
| *
|
| * Licensed 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 java.util.List; |
| |
| 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; |
| |
| /** |
| * AvailableCluster |
| * |
| * @author william.liangf |
| */ |
| public class AvailableClusterInvoker<T> extends AbstractClusterInvoker<T> {
|
| |
| public AvailableClusterInvoker(Directory<T> directory) { |
| super(directory); |
| } |
| |
| 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); |
| }
|
| |
| } |