org.xdi.service.ObjectSerializationService.java Source code

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Here is the source code for org.xdi.service.ObjectSerializationService.java

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/*
 * oxCore is available under the MIT License (2008). See http://opensource.org/licenses/MIT for full text.
 *
 * Copyright (c) 2014, Gluu
 */package org.xdi.service;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.Serializable;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.SerializationUtils;
import org.jboss.seam.Component;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.AutoCreate;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.log.Log;

/**
 * Service class to serialize/deserialize object to file
 *
 * @author Yuriy Movchan Date: 01/27/2014
 */
@Name("objectSerializationService")
@Scope(ScopeType.APPLICATION)
@AutoCreate
public class ObjectSerializationService {

    @Logger
    private Log log;

    public boolean saveObject(String path, Serializable obj, boolean append) {
        File file = new File(path);
        FileOutputStream fos;
        try {
            fos = new FileOutputStream(file, append);
        } catch (FileNotFoundException ex) {
            log.error("Faield to serialize to file: '{0}'. Error: ", path, ex);

            return false;
        }

        BufferedOutputStream bos = new BufferedOutputStream(fos);
        try {
            GZIPOutputStream gos = new GZIPOutputStream(bos);
            SerializationUtils.serialize(obj, gos);
            gos.flush();
            IOUtils.closeQuietly(gos);
        } catch (IOException ex) {
            log.error("Faield to serialize to file: '{0}'. Error: ", path, ex);
            IOUtils.closeQuietly(bos);

            return false;
        }

        return true;
    }

    public boolean saveObject(String path, Serializable obj) {
        return saveObject(path, obj, false);
    }

    public Object loadObject(String path) {
        File file = new File(path);
        if (!file.exists()) {
            log.trace("File '{0}' is not exist", path);
            return null;
        }

        FileInputStream fis;
        try {
            fis = new FileInputStream(file);
        } catch (FileNotFoundException ex) {
            log.error("Faield to deserialize from file: '{0}'. Error: ", path, ex);

            return null;
        }

        BufferedInputStream bis = new BufferedInputStream(fis);
        Object obj = null;
        try {
            GZIPInputStream gis = new GZIPInputStream(bis);
            obj = SerializationUtils.deserialize(gis);
            IOUtils.closeQuietly(gis);
        } catch (IOException ex) {
            log.error("Faield to deserialize from file: '{0}'. Error: ", path, ex);
            IOUtils.closeQuietly(bis);

            return null;
        }

        return obj;
    }

    public void cleanup(String path) {
        File file = new File(path);
        FileUtils.deleteQuietly(file);
    }

    /**
     * Get objectSerializationService instance
     *
     * @return ObjectSerializationService instance
     */
    public static ObjectSerializationService instance() {
        return (ObjectSerializationService) Component.getInstance(ObjectSerializationService.class);
    }

}