org.wso2.carbon.server.extensions.FragmentBundleCreator.java Source code

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Here is the source code for org.wso2.carbon.server.extensions.FragmentBundleCreator.java

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/*
*  Copyright (c) 2005-2012, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*  WSO2 Inc. 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.wso2.carbon.server.extensions;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.server.CarbonLaunchExtension;
import org.wso2.carbon.server.LauncherConstants;
import org.wso2.carbon.server.util.FileUtils;
import org.wso2.carbon.server.util.Utils;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.jar.Attributes;
import java.util.jar.Manifest;

public abstract class FragmentBundleCreator implements CarbonLaunchExtension {
    private static Log log = LogFactory.getLog(FragmentBundleCreator.class);

    private static String FRAGMENT_BUNDLE_VERSION = "1.0.0";

    public void perform() {
        File[] files = getBundleConfigs();
        if (files.length > 0) {
            for (File file : files) {
                String fragmentHostBundleName = getFragmentHostBundleName(file);
                String fragmentBundleName = getFragmentBundleName(file);

                try {
                    Manifest mf = new Manifest();
                    Attributes attribs = mf.getMainAttributes();
                    attribs.putValue(LauncherConstants.MANIFEST_VERSION, "1.0");
                    attribs.putValue(LauncherConstants.BUNDLE_MANIFEST_VERSION, "2");
                    attribs.putValue(LauncherConstants.BUNDLE_NAME, fragmentBundleName);
                    attribs.putValue(LauncherConstants.BUNDLE_SYMBOLIC_NAME, fragmentBundleName);
                    attribs.putValue(LauncherConstants.BUNDLE_VERSION, FRAGMENT_BUNDLE_VERSION);
                    attribs.putValue(LauncherConstants.FRAGMENT_HOST, fragmentHostBundleName);
                    attribs.putValue(LauncherConstants.BUNDLE_CLASSPATH, ".");

                    File dropinsFolder = new File(Utils.getCarbonComponentRepo(), "dropins");
                    String targetFilePath = dropinsFolder.getAbsolutePath() + File.separator + fragmentBundleName
                            + "_" + FRAGMENT_BUNDLE_VERSION + ".jar";

                    String tempDirPath = Utils.JAR_TO_BUNDLE_DIR + File.separator + System.currentTimeMillis()
                            + Math.random();

                    FileOutputStream mfos = null;
                    try {
                        if (file.isDirectory()) {
                            FileUtils.copyDirectory(file, new File(tempDirPath));
                        } else { // is a single file..
                            Utils.copyFileToDir(file, new File(tempDirPath));
                        }
                        String metaInfPath = tempDirPath + File.separator + "META-INF";
                        if (!new File(metaInfPath).mkdirs()) {
                            throw new IOException("Failed to create the directory: " + metaInfPath);
                        }
                        mfos = new FileOutputStream(metaInfPath + File.separator + "MANIFEST.MF");
                        mf.write(mfos);

                        Utils.archiveDir(targetFilePath, tempDirPath);
                        Utils.deleteDir(new File(tempDirPath));
                    } finally {
                        try {
                            if (mfos != null) {
                                mfos.close();
                            }
                        } catch (IOException e) {
                            log.error("Unable to close the OutputStream " + e.getMessage(), e);
                        }
                    }
                } catch (IOException e) {
                    log.error("Error occured while creating the log4j prop fragment bundle.", e);
                }
            }
        }
    }

    protected abstract File[] getBundleConfigs();

    protected abstract String getFragmentHostBundleName(File dirName);

    protected abstract String getFragmentBundleName(File dirName);
}