org.apache.giraph.utils.RequestUtils.java Source code

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Here is the source code for org.apache.giraph.utils.RequestUtils.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.giraph.utils;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufInputStream;
import org.apache.giraph.comm.requests.WritableRequest;

import java.io.IOException;
import org.apache.log4j.Logger;

/**
 * RequestUtils utility class
 */
public class RequestUtils {
    /** Logger */
    public static final Logger LOG = Logger.getLogger(RequestUtils.class);

    /**
     * Private Constructor
     */
    private RequestUtils() {
    }

    /**
     * decodeWritableRequest based on predicate
     *
     * @param buf ByteBuf
     * @param request writableRequest
     * @return properly initialized writableRequest
     * @throws IOException
     */
    public static WritableRequest decodeWritableRequest(ByteBuf buf, WritableRequest request) throws IOException {
        ByteBufInputStream input = new ByteBufInputStream(buf);
        request.readFields(input);
        return request;
    }
}