tachyon.master.ImageWriter.java Source code

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Here is the source code for tachyon.master.ImageWriter.java

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/*
 * Licensed to the University of California, Berkeley 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 tachyon.master;

import java.io.DataOutputStream;
import java.io.IOException;

import com.fasterxml.jackson.databind.ObjectWriter;
import com.google.common.base.Throwables;

/**
 * Class implemented this interface will be able to write image file.
 */
public abstract class ImageWriter {
    /**
     * Write image to the specified DataOutputStream. Use the specified ObjectWriter.
     * 
     * @param objWriter The used object writer
     * @param dos The target data output stream
     * @throws IOException
     */
    abstract void writeImage(ObjectWriter objWriter, DataOutputStream dos) throws IOException;

    /**
     * Write an ImageElement to the specified DataOutputStream. Use the specified ObjectWriter.
     * 
     * @param objWriter The used object writer
     * @param dos The target data output stream
     * @param ele The image element to be written
     */
    protected void writeElement(ObjectWriter objWriter, DataOutputStream dos, ImageElement ele) {
        try {
            objWriter.writeValue(dos, ele);
            dos.writeByte('\n');
        } catch (IOException e) {
            throw Throwables.propagate(e);
        }
    }
}