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The p2p remoting module of dubbo project

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/*
 * 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.remoting.p2p;

import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.extension.ExtensionLoader;
import org.apache.dubbo.remoting.ChannelHandler;
import org.apache.dubbo.remoting.RemotingException;

/**
 * Networkers. (API, Static, ThreadSafe)
 * 
 * Peer-to-peer
 */
public class Networkers {

    public static Peer join(String group, String peer, ChannelHandler handler) throws RemotingException {
        return join(URL.valueOf(group), URL.valueOf(peer), handler);
    }

    public static Peer join(URL group, URL peer, ChannelHandler handler) throws RemotingException {
        return lookup(group).join(peer, handler);
    }

    public static Group lookup(String group) throws RemotingException {
        return lookup(URL.valueOf(group));
    }

    public static Group lookup(URL group) throws RemotingException {
        Networker networker = ExtensionLoader.getExtensionLoader(Networker.class).getExtension(group.getProtocol());
        return networker.lookup(group);
    }
}