Jake Slack | 03928ae | 2014-05-13 18:41:56 -0700 | [diff] [blame] | 1 | // |
| 2 | // ======================================================================== |
| 3 | // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| 4 | // ------------------------------------------------------------------------ |
| 5 | // All rights reserved. This program and the accompanying materials |
| 6 | // are made available under the terms of the Eclipse Public License v1.0 |
| 7 | // and Apache License v2.0 which accompanies this distribution. |
| 8 | // |
| 9 | // The Eclipse Public License is available at |
| 10 | // http://www.eclipse.org/legal/epl-v10.html |
| 11 | // |
| 12 | // The Apache License v2.0 is available at |
| 13 | // http://www.opensource.org/licenses/apache2.0.php |
| 14 | // |
| 15 | // You may elect to redistribute this code under either of these licenses. |
| 16 | // ======================================================================== |
| 17 | // |
| 18 | |
| 19 | package org.eclipse.jetty.webapp; |
| 20 | |
| 21 | |
| 22 | import java.net.URI; |
| 23 | import java.util.ArrayList; |
| 24 | import java.util.List; |
| 25 | import java.util.Locale; |
| 26 | import java.util.jar.JarEntry; |
| 27 | |
| 28 | import org.eclipse.jetty.util.log.Log; |
| 29 | import org.eclipse.jetty.util.log.Logger; |
| 30 | import org.eclipse.jetty.util.resource.Resource; |
| 31 | |
| 32 | /** |
| 33 | * MetaInfConfiguration |
| 34 | * |
| 35 | * Scan META-INF of all jars in WEB-INF/lib to find: |
| 36 | * <ul> |
| 37 | * <li>tlds |
| 38 | * <li>web-fragment.xml |
| 39 | * <li>resources |
| 40 | * </ul> |
| 41 | */ |
| 42 | public class MetaInfConfiguration extends AbstractConfiguration |
| 43 | { |
| 44 | private static final Logger LOG = Log.getLogger(MetaInfConfiguration.class); |
| 45 | |
| 46 | public static final String METAINF_TLDS = TagLibConfiguration.TLD_RESOURCES; |
| 47 | public static final String METAINF_FRAGMENTS = FragmentConfiguration.FRAGMENT_RESOURCES; |
| 48 | public static final String METAINF_RESOURCES = WebInfConfiguration.RESOURCE_URLS; |
| 49 | |
| 50 | @Override |
| 51 | public void preConfigure(final WebAppContext context) throws Exception |
| 52 | { |
| 53 | //Merge all container and webinf lib jars to look for META-INF resources |
| 54 | |
| 55 | ArrayList<Resource> jars = new ArrayList<Resource>(); |
| 56 | jars.addAll(context.getMetaData().getOrderedContainerJars()); |
| 57 | jars.addAll(context.getMetaData().getWebInfJars()); |
| 58 | |
| 59 | JarScanner scanner = new JarScanner() |
| 60 | { |
| 61 | public void processEntry(URI jarUri, JarEntry entry) |
| 62 | { |
| 63 | try |
| 64 | { |
| 65 | MetaInfConfiguration.this.processEntry(context,jarUri,entry); |
| 66 | } |
| 67 | catch (Exception e) |
| 68 | { |
| 69 | LOG.warn("Problem processing jar entry " + entry, e); |
| 70 | } |
| 71 | } |
| 72 | }; |
| 73 | |
| 74 | |
| 75 | //Scan jars for META-INF information |
| 76 | if (jars != null) |
| 77 | { |
| 78 | URI[] uris = new URI[jars.size()]; |
| 79 | int i=0; |
| 80 | for (Resource r : jars) |
| 81 | { |
| 82 | uris[i++] = r.getURI(); |
| 83 | } |
| 84 | scanner.scan(null, uris, true); |
| 85 | } |
| 86 | } |
| 87 | @Override |
| 88 | public void configure(WebAppContext context) throws Exception |
| 89 | { |
| 90 | |
| 91 | } |
| 92 | |
| 93 | @Override |
| 94 | public void deconfigure(WebAppContext context) throws Exception |
| 95 | { |
| 96 | |
| 97 | } |
| 98 | |
| 99 | @Override |
| 100 | public void postConfigure(WebAppContext context) throws Exception |
| 101 | { |
| 102 | context.setAttribute(METAINF_FRAGMENTS, null); |
| 103 | context.setAttribute(METAINF_RESOURCES, null); |
| 104 | context.setAttribute(METAINF_TLDS, null); |
| 105 | } |
| 106 | |
| 107 | public void addResource (WebAppContext context, String attribute, Resource jar) |
| 108 | { |
| 109 | @SuppressWarnings("unchecked") |
| 110 | List<Resource> list = (List<Resource>)context.getAttribute(attribute); |
| 111 | if (list==null) |
| 112 | { |
| 113 | list=new ArrayList<Resource>(); |
| 114 | context.setAttribute(attribute,list); |
| 115 | } |
| 116 | if (!list.contains(jar)) |
| 117 | list.add(jar); |
| 118 | } |
| 119 | |
| 120 | |
| 121 | protected void processEntry(WebAppContext context, URI jarUri, JarEntry entry) |
| 122 | { |
| 123 | String name = entry.getName(); |
| 124 | |
| 125 | if (!name.startsWith("META-INF/")) |
| 126 | return; |
| 127 | |
| 128 | try |
| 129 | { |
| 130 | if (name.equals("META-INF/web-fragment.xml") && context.isConfigurationDiscovered()) |
| 131 | { |
| 132 | addResource(context,METAINF_FRAGMENTS,Resource.newResource(jarUri)); |
| 133 | } |
| 134 | else if (name.equals("META-INF/resources/") && context.isConfigurationDiscovered()) |
| 135 | { |
| 136 | addResource(context,METAINF_RESOURCES,Resource.newResource("jar:"+jarUri+"!/META-INF/resources")); |
| 137 | } |
| 138 | else |
| 139 | { |
| 140 | String lcname = name.toLowerCase(Locale.ENGLISH); |
| 141 | if (lcname.endsWith(".tld")) |
| 142 | { |
| 143 | addResource(context,METAINF_TLDS,Resource.newResource("jar:"+jarUri+"!/"+name)); |
| 144 | } |
| 145 | } |
| 146 | } |
| 147 | catch(Exception e) |
| 148 | { |
| 149 | context.getServletContext().log(jarUri+"!/"+name,e); |
| 150 | } |
| 151 | } |
| 152 | } |