backup.namenode.ipc.NameNodeBackupRPC.java Source code

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Here is the source code for backup.namenode.ipc.NameNodeBackupRPC.java

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/*
 * Copyright 2016 Fortitude Technologies LLC
 * 
 * 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 backup.namenode.ipc;

import static backup.BackupConstants.DFS_BACKUP_NAMENODE_RPC_PORT_DEFAULT;
import static backup.BackupConstants.DFS_BACKUP_NAMENODE_RPC_PORT_KEY;

import java.io.IOException;
import java.net.InetSocketAddress;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.ipc.ProtocolInfo;
import org.apache.hadoop.ipc.RPC;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.KerberosInfo;
import org.apache.hadoop.security.UserGroupInformation;

@KerberosInfo(serverPrincipal = DFSConfigKeys.DFS_DATANODE_KERBEROS_PRINCIPAL_KEY)
@ProtocolInfo(protocolName = "backup.namenode.ipc.NameNodeBackupRPC", protocolVersion = 1)
public interface NameNodeBackupRPC {

    public static NameNodeBackupRPC getDataNodeBackupRPC(InetSocketAddress nameNodeIPCAddres, Configuration conf,
            UserGroupInformation ugi) throws IOException, InterruptedException {
        int port = conf.getInt(DFS_BACKUP_NAMENODE_RPC_PORT_KEY, DFS_BACKUP_NAMENODE_RPC_PORT_DEFAULT);
        if (port == 0) {
            port = nameNodeIPCAddres.getPort() + 1;
        }
        InetSocketAddress nameNodeAddress = new InetSocketAddress(nameNodeIPCAddres.getAddress(), port);
        return RPC.getProtocolProxy(NameNodeBackupRPC.class, RPC.getProtocolVersion(NameNodeBackupRPC.class),
                nameNodeAddress, ugi, conf, NetUtils.getDefaultSocketFactory(conf)).getProxy();
    }

    DatanodeUuids getDatanodeUuids(long blockId) throws IOException;
}