org.apache.hama.bsp.message.MessageManagerFactory.java Source code

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Here is the source code for org.apache.hama.bsp.message.MessageManagerFactory.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.hama.bsp.message;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.util.ReflectionUtils;

public class MessageManagerFactory {
    public static final String MESSAGE_MANAGER_CLASS = "hama.messenger.class";

    /**
     * Returns a messenger via reflection based on what was configured.
     * 
     * @param conf
     * @return a messenger that was configured.
     */
    @SuppressWarnings("unchecked")
    public static <M extends Writable> MessageManager<M> getMessageManager(Configuration conf)
            throws ClassNotFoundException {
        return (MessageManager<M>) ReflectionUtils
                .newInstance(
                        conf.getClassByName(conf.get(MESSAGE_MANAGER_CLASS,
                                org.apache.hama.bsp.message.HamaMessageManagerImpl.class.getCanonicalName())),
                        conf);
    }

}