org.apache.hadoop.ipc.RpcEngine.java Source code

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Here is the source code for org.apache.hadoop.ipc.RpcEngine.java

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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.hadoop.ipc;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.concurrent.atomic.AtomicBoolean;

import javax.net.SocketFactory;

import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.retry.RetryPolicy;
import org.apache.hadoop.ipc.Client.ConnectionId;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.SecretManager;
import org.apache.hadoop.security.token.TokenIdentifier;

/** An RPC implementation. */
@InterfaceStability.Evolving
public interface RpcEngine {

    /** Construct a client-side proxy object. 
     * @param <T>*/
    <T> ProtocolProxy<T> getProxy(Class<T> protocol, long clientVersion, InetSocketAddress addr,
            UserGroupInformation ticket, Configuration conf, SocketFactory factory, int rpcTimeout,
            RetryPolicy connectionRetryPolicy) throws IOException;

    /** Construct a client-side proxy object. */
    <T> ProtocolProxy<T> getProxy(Class<T> protocol, long clientVersion, InetSocketAddress addr,
            UserGroupInformation ticket, Configuration conf, SocketFactory factory, int rpcTimeout,
            RetryPolicy connectionRetryPolicy, AtomicBoolean fallbackToSimpleAuth) throws IOException;

    /** 
     * Construct a server for a protocol implementation instance.
     * 
     * @param protocol the class of protocol to use
     * @param instance the instance of protocol whose methods will be called
     * @param conf the configuration to use
     * @param bindAddress the address to bind on to listen for connection
     * @param port the port to listen for connections on
     * @param numHandlers the number of method handler threads to run
     * @param numReaders the number of reader threads to run
     * @param queueSizePerHandler the size of the queue per hander thread
     * @param verbose whether each call should be logged
     * @param secretManager The secret manager to use to validate incoming requests.
     * @param portRangeConfig A config parameter that can be used to restrict
     *        the range of ports used when port is 0 (an ephemeral port)
     * @return The Server instance
     * @throws IOException on any error
     */
    RPC.Server getServer(Class<?> protocol, Object instance, String bindAddress, int port, int numHandlers,
            int numReaders, int queueSizePerHandler, boolean verbose, Configuration conf,
            SecretManager<? extends TokenIdentifier> secretManager, String portRangeConfig) throws IOException;

    /**
     * Returns a proxy for ProtocolMetaInfoPB, which uses the given connection
     * id.
     * @param connId, ConnectionId to be used for the proxy.
     * @param conf, Configuration.
     * @param factory, Socket factory.
     * @return Proxy object.
     * @throws IOException
     */
    ProtocolProxy<ProtocolMetaInfoPB> getProtocolMetaInfoProxy(ConnectionId connId, Configuration conf,
            SocketFactory factory) throws IOException;
}