org.apache.stratos.cloud.controller.persist.Serializer.java Source code

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Here is the source code for org.apache.stratos.cloud.controller.persist.Serializer.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.stratos.cloud.controller.persist;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.stratos.cloud.controller.runtime.FasterLookUpDataHolder;
import org.apache.stratos.messaging.domain.topology.Topology;

import java.io.*;

public class Serializer {

    private static final Log log = LogFactory.getLog(Serializer.class);

    public static void serializeToFile(Object serializableObj, String filePath) throws IOException {

        File outFile = new File(filePath);
        ObjectOutput objOut = null;
        FileOutputStream fileOutputStream = null;

        try {

            if (outFile.createNewFile()) {
                log.debug("Serialization file is created at " + filePath);
            } else {
                log.debug("Serialization file is already existing at " + filePath);
            }
            fileOutputStream = new FileOutputStream(outFile);
            objOut = new ObjectOutputStream(fileOutputStream);
            objOut.writeObject(serializableObj);

        } catch (IOException e) {
            log.error("Failed to serialize the object " + serializableObj.toString() + " to file " + filePath, e);
            throw e;

        } finally {
            if (objOut != null) {
                objOut.close();
            }
            if (fileOutputStream != null) {
                fileOutputStream.close();
            }
        }

    }

    /**
     * Serialize a {@link org.apache.stratos.cloud.controller.runtime.FasterLookUpDataHolder} to a byte array.
     * @param serializableObj
     * @return byte[] 
     * @throws IOException
     */
    public static byte[] serializeToByteArray(FasterLookUpDataHolder serializableObj) throws IOException {

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutput out = null;
        try {
            out = new ObjectOutputStream(bos);
            out.writeObject(serializableObj);

            return bos.toByteArray();

        } finally {
            if (out != null) {
                out.close();
            }
            bos.close();
        }

    }

    /**
    * Serialize a {@link org.apache.stratos.cloud.controller.runtime.FasterLookUpDataHolder} to a byte array.
    * @param topology
    * @return byte[]
    * @throws IOException
    */
    public static byte[] serializeToByteArray(Topology topology) throws IOException {

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutput out = null;
        try {
            out = new ObjectOutputStream(bos);
            out.writeObject(topology);

            return bos.toByteArray();

        } finally {
            if (out != null) {
                out.close();
            }
            bos.close();
        }

    }

}