com.alibaba.dubbo.rpc.cluster.LoadBalance Maven / Gradle / Ivy

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The compatible module of dubbo project

There is a newer version: 3.3.2

/*
 * 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;

import org.apache.dubbo.common.URL;
import org.apache.dubbo.rpc.Invocation;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.RpcException;

import java.util.List;
import java.util.stream.Collectors;

import com.alibaba.dubbo.common.DelegateURL;

@Deprecated
public interface LoadBalance extends org.apache.dubbo.rpc.cluster.LoadBalance {

     com.alibaba.dubbo.rpc.Invoker select(
            List> invokers,
            com.alibaba.dubbo.common.URL url,
            com.alibaba.dubbo.rpc.Invocation invocation)
            throws RpcException;

    @Override
    default  Invoker select(List> invokers, URL url, Invocation invocation) throws RpcException {
        List> invs = invokers.stream()
                .map(invoker -> new com.alibaba.dubbo.rpc.Invoker.CompatibleInvoker(invoker))
                .collect(Collectors.toList());

        com.alibaba.dubbo.rpc.Invoker selected = select(
                invs, new DelegateURL(url), new com.alibaba.dubbo.rpc.Invocation.CompatibleInvocation(invocation));

        return selected == null ? null : selected.getOriginal();
    }
}