1 /*******************************************************************************
2 * ============LICENSE_START========================================================================
3 * ONAP : ccsdk feature sdnr wt
4 * =================================================================================================
5 * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
6 * =================================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
8 * in compliance with the License. You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software distributed under the License
13 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
14 * or implied. See the License for the specific language governing permissions and limitations under
16 * ============LICENSE_END==========================================================================
17 ******************************************************************************/
18 package org.onap.ccsdk.features.sdnr.wt.helpserver.data;
21 import java.io.FileOutputStream;
22 import java.io.IOException;
23 import java.io.InputStream;
24 import java.io.OutputStream;
25 import java.util.Enumeration;
27 import org.osgi.framework.Bundle;
30 * Extract subtree with resources from Opendaylight/Karaf/OSGi bundle into Karaf directory<br>
32 * Reference: Eclipsezone @see <a href="https://www.eclipsezone.com/eclipse/forums/t101557.html">https://www.eclipszone.com</a>
34 * Example for resource and directory path from karaf log.
35 * write resource: help/FAQ/0.4.0/README.md
36 * Create directories for: data/cache/com.highstreet.technologies.help/help/FAQ/0.4.0/README.md
37 * Open the file: data/cache/com.highstreet.technologies.help/help/FAQ/0.4.0/README.md
38 * Problem: Binary, JPG files => do not use buffer related functions
40 * Hint: Werify with file manager the content of the bundle.jar file to see the location of the resources.
41 * There is no need to mark them via the classpath.
44 public class ExtactBundleResource {
47 * Extract resources from Karaf/OSGi bundle into karaf directory structure.
48 * @param bundle Karaf/OSGi bundle with resources
49 * @param filePrefix prefix in karaf file system for destination e.g. "data/cache/com.highstreet.technologies."
50 * @param ressoureRoot root name of ressources, with leading "/". e.g. "/help"
51 * @throws IOException In case of problems.
53 public static void copyBundleResoucesRecursively(Bundle bundle, String filePrefix, String ressoureRoot) throws IOException {
54 copyResourceTreeRecurse(bundle, filePrefix, bundle.getEntryPaths(ressoureRoot));
58 * Delete a file or a directory and its children.
59 * @param file The directory to delete.
60 * @throws IOException Exception when problem occurs during deleting the directory.
62 public static void deleteRecursively(File file) throws IOException {
64 if (file.isDirectory()) {
65 for (File childFile : file.listFiles()) {
66 if (childFile.isDirectory()) {
67 deleteRecursively(childFile);
69 if (!childFile.delete()) {
70 throw new IOException();
77 throw new IOException();
81 // ------------- Private functions
84 * Recurse function to steps through the resource element tree
85 * @param b Bundle index for bundle with resourcs
90 private static void copyResourceTreeRecurse(Bundle b, String filePrefix, Enumeration<String> resource) throws IOException {
91 while (resource.hasMoreElements()) {
92 String name = resource.nextElement();
93 Enumeration<String> list = b.getEntryPaths(name);
95 copyResourceTreeRecurse(b, filePrefix, list);
98 File targetFile = new File(filePrefix+name);
99 targetFile.getParentFile().mkdirs();
101 try(InputStream in = b.getEntry(name).openStream();
102 OutputStream outStream = new FileOutputStream(targetFile);) {
105 while ((theInt = in.read()) >= 0) {
106 outStream.write(theInt);