runtime/org.argeo.slc.support.osgi/src/main/java/org/argeo/slc/osgi/build/BundleModularDistribution.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.argeo.slc.osgi.build;
  18
  19 import java.net.URL;
  20 import java.util.Enumeration;
  21 import java.util.SortedMap;
  22 import java.util.StringTokenizer;
  23 import java.util.jar.JarInputStream;
  24 import java.util.jar.Manifest;
  25
  26 import org.apache.commons.io.IOUtils;
  27 import org.argeo.slc.build.BasicNameVersion;
  28 import org.argeo.slc.build.Distribution;
  29 import org.argeo.slc.build.NameVersion;
  30 import org.argeo.slc.core.build.VersionedResourceDistribution;
  31 import org.osgi.framework.Constants;
  32 import org.springframework.context.ResourceLoaderAware;
  33 import org.springframework.core.io.ResourceLoader;
  34
  35 public class BundleModularDistribution extends AbstractOsgiModularDistribution
  36                 implements ResourceLoaderAware {
  37         private ResourceLoader resourceLoader;
  38
  39         private String libDirectory = "/lib";
  40
  41         @SuppressWarnings(value = { "unchecked" })
  42         protected void fillDistributions(
  43                         SortedMap<NameVersion, Distribution> distributions)
  44                         throws Exception {
  45                 Enumeration<URL> urls = (Enumeration<URL>) getBundleContext()
  46                                 .getBundle().findEntries(libDirectory, "*.jar", false);
  47                 while (urls.hasMoreElements()) {
  48                         URL url = urls.nextElement();
  49                         JarInputStream in = null;
  50                         try {
  51                                 in = new JarInputStream(url.openStream());
  52                                 Manifest mf = in.getManifest();
  53                                 String name = mf.getMainAttributes().getValue(
  54                                                 Constants.BUNDLE_SYMBOLICNAME);
  55                                 // Skip additional specs such as
  56                                 // ; singleton:=true
  57                                 if (name.indexOf(';') > -1) {
  58                                         name = new StringTokenizer(name, " ;").nextToken();
  59                                 }
  60
  61                                 String version = mf.getMainAttributes().getValue(
  62                                                 Constants.BUNDLE_VERSION);
  63                                 BasicNameVersion nameVersion = new BasicNameVersion(name,
  64                                                 version);
  65                                 distributions.put(nameVersion,
  66                                                 new VersionedResourceDistribution(name, version,
  67                                                                 resourceLoader.getResource(url.toString())));
  68                         } finally {
  69                                 IOUtils.closeQuietly(in);
  70                         }
  71                 }
  72         }
  73
  74         public void setLibDirectory(String libDirectory) {
  75                 this.libDirectory = libDirectory;
  76         }
  77
  78         public void setResourceLoader(ResourceLoader resourceLoader) {
  79                 this.resourceLoader = resourceLoader;
  80         }
  81
  82         /*
  83          * @SuppressWarnings(value = { "unchecked" }) protected URL
  84          * findModule(String moduleName, String version) { Enumeration<URL> urls =
  85          * (Enumeration<URL>) bundleContext.getBundle() .findEntries(libDirectory,
  86          * moduleName + "*", false);
  87          *
  88          * if (!urls.hasMoreElements()) throw new SlcException("Cannot find module "
  89          * + moduleName);
  90          *
  91          * URL url = urls.nextElement();
  92          *
  93          * // TODO: check version as well if (urls.hasMoreElements()) throw new
  94          * SlcException("More than one module with name " + moduleName); return url;
  95          * }
  96          */
  97
  98 }