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Arquillian container for Apache OpenWebBeans standalone.
This is intended for running in unit tests.
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.webbeans.arquillian.standalone;
import org.jboss.shrinkwrap.api.Archive;
import org.jboss.shrinkwrap.api.ArchivePath;
import org.jboss.shrinkwrap.api.ArchivePaths;
import org.jboss.shrinkwrap.api.Filters;
import org.jboss.shrinkwrap.api.Node;
import org.jboss.shrinkwrap.api.asset.ArchiveAsset;
import org.jboss.shrinkwrap.api.asset.Asset;
import org.jboss.shrinkwrap.api.spec.JavaArchive;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
public class OwbSWClassLoader extends URLClassLoader
{
// Collections.emptyEnumeration only exists in java7++
private static final Enumeration EMPTY_ENUMERATION = new Enumeration()
{
@Override
public boolean hasMoreElements()
{
return false;
}
@Override
public Object nextElement()
{
return null;
}
};
private final List openedStreams = new ArrayList<>();
private final String prefix;
private final boolean useOnlyArchiveResources;
private final Archive archive;
private final Collection useOnlyArchiveResourcesExcludes;
public OwbSWClassLoader(ClassLoader parent, Archive archive, boolean useOnlyArchiveResources, Collection useOnlyArchiveResourcesExcludes)
{
super(new URL[0], parent);
this.useOnlyArchiveResources = useOnlyArchiveResources;
this.useOnlyArchiveResourcesExcludes = useOnlyArchiveResourcesExcludes;
this.archive = archive;
if (WebArchive.class.isInstance(archive))
{
prefix = "/WEB-INF/classes";
}
else
{
prefix = "";
}
try
{ // add it to find classes if used this way
addURL(new URL(null, "archive:" + archive.getName() + "/", new ArchiveStreamHandler()));
}
catch (MalformedURLException e)
{
throw new RuntimeException("Could not create URL for archive: " + archive.getName(), e);
}
}
@Override
public URL getResource(String name)
{
if (useOnlyArchiveResources)
{
URL url = findResource(name);
if (url != null)
{
return url;
} // else user probably used the fact the test is embedded
}
return super.getResource(name);
}
@Override
public Enumeration getResources(String name) throws IOException
{
if (useOnlyArchiveResources)
{
Enumeration urls = findResources(name);
if (useOnlyArchiveResourcesExcludes.contains(name))
{
Collection returnValue = new ArrayList<>(Collections.list(urls));
returnValue.addAll(Collections.list(super.getResources(name)));
return Collections.enumeration(returnValue);
}
else if (urls.hasMoreElements())
{
return urls;
} // else user probably used the fact the test is embedded
}
return super.getResources(name);
}
@Override
public URL findResource(String name)
{
Set nodes = findNodes(archive, name);
if (!nodes.isEmpty())
{
try
{
return new URL(null, "archive:" + nodes.iterator().next(), new ArchiveStreamHandler());
}
catch (MalformedURLException e)
{
throw new RuntimeException(e);
}
}
if (useOnlyArchiveResources)
{
return null;
}
return super.findResource(name);
}
@Override
public Enumeration findResources(String name) throws IOException
{
Set nodes = findNodes(archive, name);
List urls = new ArrayList<>(nodes.size());
for (String node : nodes)
{
urls.add(new URL(null, "archive:" + node, new ArchiveStreamHandler()));
}
return Collections.enumeration(urls);
}
private Set findNodes(Archive arch, String name)
{
Set nodes = new HashSet<>();
if (arch instanceof WebArchive)
{
// first check WEB-INF/classes
ArchivePath path = ArchivePaths.create(path(prefix, name));
Node node = arch.get(path);
if (node != null)
{
nodes.add(path.get());
}
Map jarLibs = ((WebArchive) arch).getContent(Filters.include("/WEB-INF/lib/.*\\.jar"));
for (Node jarLib : jarLibs.values())
{
if (jarLib.getAsset() instanceof ArchiveAsset && ((ArchiveAsset) jarLib.getAsset()).getArchive() instanceof JavaArchive)
{
Set jarNodes = findNodes(((ArchiveAsset) jarLib.getAsset()).getArchive(), name);
for (String jarNode : jarNodes)
{
path = ArchivePaths.create(path("WEB-INF/lib", ((ArchiveAsset) jarLib.getAsset()).getArchive().getName(), jarNode));
nodes.add(path.get());
}
}
}
}
else
{
ArchivePath path = ArchivePaths.create(name);
Node node = arch.get(path);
if (node != null)
{
nodes.add(path.get());
}
}
return nodes;
}
private String path(String... parts)
{
StringBuilder builder = new StringBuilder(parts[0]);
for (int i = 1; i < parts.length; i++)
{
if (!parts[i - 1].endsWith("/") && !parts[i].startsWith("/"))
{
builder.append("/");
}
builder.append(parts[i]);
}
return builder.toString();
}
public void close() throws IOException
{
synchronized (this)
{
for (InputStream stream : openedStreams)
{
try
{
stream.close();
}
catch (Exception e)
{
// no-op
}
}
openedStreams.clear();
}
}
protected class ArchiveStreamHandler extends URLStreamHandler
{
@Override
protected URLConnection openConnection(URL u) throws IOException
{
return new URLConnection(u)
{
@Override
public void connect() throws IOException
{
// no-op
}
@Override
public InputStream getInputStream() throws IOException
{
ArchivePath path = convertToArchivePath(u);
Node node = archive.get(prefix + path.get());
if (node == null && !prefix.isEmpty())
{ // WEB-INF/lib/x.jar!*
node = archive.get(path);
}
// SHRINKWRAP-308
if (node == null)
{
throw new FileNotFoundException("Requested path: " + path + " does not exist in " + archive.toString());
}
Asset asset = node.getAsset();
if (asset == null)
{
return null;
}
InputStream input = asset.openStream();
synchronized (this)
{
openedStreams.add(input);
}
return input;
}
private ArchivePath convertToArchivePath(URL url)
{
return ArchivePaths.create(url.getPath().replace(archive.getName(), ""));
}
};
}
}
}
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