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

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   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 package org.argeo.slc.osgi.build;
  17
  18 import java.net.URL;
  19 import java.util.Enumeration;
  20 import java.util.SortedMap;
  21 import java.util.StringTokenizer;
  22 import java.util.jar.JarInputStream;
  23 import java.util.jar.Manifest;
  24
  25 import org.apache.commons.io.IOUtils;
  26 import org.argeo.slc.BasicNameVersion;
  27 import org.argeo.slc.NameVersion;
  28 import org.argeo.slc.build.Distribution;
  29 import org.argeo.slc.core.build.VersionedResourceDistribution;
  30 import org.osgi.framework.Constants;
  31 import org.springframework.context.ResourceLoaderAware;
  32 import org.springframework.core.io.ResourceLoader;
  33
  34 public class BundleModularDistribution extends AbstractOsgiModularDistribution
  35                 implements ResourceLoaderAware {
  36         private ResourceLoader resourceLoader;
  37
  38         private String libDirectory = "/lib";
  39
  40         @SuppressWarnings(value = { "unchecked" })
  41         protected void fillDistributions(
  42                         SortedMap<NameVersion, Distribution> distributions)
  43                         throws Exception {
  44                 Enumeration<URL> urls = (Enumeration<URL>) getBundleContext()
  45                                 .getBundle().findEntries(libDirectory, "*.jar", false);
  46                 while (urls.hasMoreElements()) {
  47                         URL url = urls.nextElement();
  48                         JarInputStream in = null;
  49                         try {
  50                                 in = new JarInputStream(url.openStream());
  51                                 Manifest mf = in.getManifest();
  52                                 String name = mf.getMainAttributes().getValue(
  53                                                 Constants.BUNDLE_SYMBOLICNAME);
  54                                 // Skip additional specs such as
  55                                 // ; singleton:=true
  56                                 if (name.indexOf(';') > -1) {
  57                                         name = new StringTokenizer(name, " ;").nextToken();
  58                                 }
  59
  60                                 String version = mf.getMainAttributes().getValue(
  61                                                 Constants.BUNDLE_VERSION);
  62                                 BasicNameVersion nameVersion = new BasicNameVersion(name,
  63                                                 version);
  64                                 distributions.put(nameVersion,
  65                                                 new VersionedResourceDistribution(name, version,
  66                                                                 resourceLoader.getResource(url.toString())));
  67                         } finally {
  68                                 IOUtils.closeQuietly(in);
  69                         }
  70                 }
  71         }
  72
  73         public void setLibDirectory(String libDirectory) {
  74                 this.libDirectory = libDirectory;
  75         }
  76
  77         public void setResourceLoader(ResourceLoader resourceLoader) {
  78                 this.resourceLoader = resourceLoader;
  79         }
  80
  81         /*
  82          * @SuppressWarnings(value = { "unchecked" }) protected URL
  83          * findModule(String moduleName, String version) { Enumeration<URL> urls =
  84          * (Enumeration<URL>) bundleContext.getBundle() .findEntries(libDirectory,
  85          * moduleName + "*", false);
  86          *
  87          * if (!urls.hasMoreElements()) throw new SlcException("Cannot find module "
  88          * + moduleName);
  89          *
  90          * URL url = urls.nextElement();
  91          *
  92          * // TODO: check version as well if (urls.hasMoreElements()) throw new
  93          * SlcException("More than one module with name " + moduleName); return url;
  94          * }
  95          */
  96
  97 }