Files
SCM-Manager/scm-webapp/src/main/java/sonia/scm/BindingExtensionProcessor.java
2011-01-18 19:51:37 +01:00

357 lines
9.3 KiB
Java

/**
* Copyright (c) 2010, Sebastian Sdorra
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of SCM-Manager; nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* http://bitbucket.org/sdorra/scm-manager
*
*/
package sonia.scm;
//~--- non-JDK imports --------------------------------------------------------
import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.multibindings.Multibinder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sonia.scm.group.GroupListener;
import sonia.scm.plugin.ext.Extension;
import sonia.scm.plugin.ext.ExtensionProcessor;
import sonia.scm.repository.RepositoryHandler;
import sonia.scm.repository.RepositoryListener;
import sonia.scm.resources.ResourceHandler;
import sonia.scm.security.EncryptionHandler;
import sonia.scm.user.UserListener;
import sonia.scm.web.security.AuthenticationHandler;
import sonia.scm.web.security.AuthenticationListener;
import sonia.scm.web.security.XmlAuthenticationHandler;
//~--- JDK imports ------------------------------------------------------------
import java.util.HashSet;
import java.util.Set;
/**
*
* @author Sebastian Sdorra
*/
public class BindingExtensionProcessor implements ExtensionProcessor
{
/** the logger for BindingExtensionProcessor */
private static final Logger logger =
LoggerFactory.getLogger(BindingExtensionProcessor.class);
//~--- constructors ---------------------------------------------------------
/**
* Constructs ...
*
*
*/
public BindingExtensionProcessor()
{
this.moduleSet = new HashSet<Module>();
this.extensions = new HashSet<Class<?>>();
}
//~--- methods --------------------------------------------------------------
/**
* Method description
*
*
* @param binder
*/
@SuppressWarnings("unchecked")
public void bindExtensions(Binder binder)
{
Multibinder<RepositoryHandler> repositoryHandlers =
Multibinder.newSetBinder(binder, RepositoryHandler.class);
Multibinder<AuthenticationHandler> authenticators =
Multibinder.newSetBinder(binder, AuthenticationHandler.class);
Multibinder<ResourceHandler> resourceHandler =
Multibinder.newSetBinder(binder, ResourceHandler.class);
authenticators.addBinding().to(XmlAuthenticationHandler.class);
for (Class extensionClass : extensions)
{
try
{
if (RepositoryHandler.class.isAssignableFrom(extensionClass))
{
if (logger.isInfoEnabled())
{
logger.info("bind RepositoryHandler {}", extensionClass.getName());
}
binder.bind(extensionClass);
repositoryHandlers.addBinding().to(extensionClass);
}
else if (EncryptionHandler.class.isAssignableFrom(extensionClass))
{
bind(binder, EncryptionHandler.class, extensionClass);
}
else if (AuthenticationHandler.class.isAssignableFrom(extensionClass))
{
if (logger.isInfoEnabled())
{
logger.info("bind AuthenticationHandler {}",
extensionClass.getName());
}
binder.bind(extensionClass);
authenticators.addBinding().to(extensionClass);
}
else if (GroupListener.class.isAssignableFrom(extensionClass))
{
if (logger.isInfoEnabled())
{
logger.info("bind GroupListener {}", extensionClass.getName());
}
GroupListener listener = (GroupListener) extensionClass.newInstance();
groupListeners.add(listener);
}
else if (UserListener.class.isAssignableFrom(extensionClass))
{
if (logger.isInfoEnabled())
{
logger.info("bind UserListener {}", extensionClass.getName());
}
UserListener listener = (UserListener) extensionClass.newInstance();
userListeners.add(listener);
}
else if (RepositoryListener.class.isAssignableFrom(extensionClass))
{
if (logger.isInfoEnabled())
{
logger.info("bind RepositoryListener {}", extensionClass.getName());
}
RepositoryListener listener =
(RepositoryListener) extensionClass.newInstance();
repositoryListeners.add(listener);
}
else if (AuthenticationListener.class.isAssignableFrom(extensionClass))
{
if (logger.isInfoEnabled())
{
logger.info("bind AuthenticaitonListener {}",
extensionClass.getName());
}
AuthenticationListener listener =
(AuthenticationListener) extensionClass.newInstance();
authenticationListeners.add(listener);
}
else if (ResourceHandler.class.isAssignableFrom(extensionClass))
{
if (logger.isInfoEnabled())
{
logger.info("bind ResourceHandler {}", extensionClass.getName());
}
resourceHandler.addBinding().to(extensionClass);
}
else
{
if (logger.isInfoEnabled())
{
logger.info("bind {}", extensionClass.getName());
}
binder.bind(extensionClass);
}
}
catch (Exception ex)
{
logger.error(ex.getMessage(), ex);
}
}
}
/**
* Method description
*
*
* @param extension
* @param extensionClass
*/
@Override
public void processExtension(Extension extension, Class extensionClass)
{
if (Module.class.isAssignableFrom(extensionClass))
{
if (logger.isInfoEnabled())
{
logger.info("add GuiceModule {}", extensionClass.getName());
}
addModuleClass(extensionClass);
}
else
{
extensions.add(extensionClass);
}
}
//~--- get methods ----------------------------------------------------------
/**
* Method description
*
*
* @return
*/
public Set<AuthenticationListener> getAuthenticationListeners()
{
return authenticationListeners;
}
/**
* Method description
*
*
* @return
*/
public Set<GroupListener> getGroupListeners()
{
return groupListeners;
}
/**
* Method description
*
*
* @return
*/
public Set<Module> getModuleSet()
{
return moduleSet;
}
/**
* Method description
*
*
* @return
*/
public Set<RepositoryListener> getRepositoryListeners()
{
return repositoryListeners;
}
/**
* Method description
*
*
* @return
*/
public Set<UserListener> getUserListeners()
{
return userListeners;
}
//~--- methods --------------------------------------------------------------
/**
* Method description
*
*
* @param extensionClass
*/
private void addModuleClass(Class<? extends Module> extensionClass)
{
try
{
Module module = extensionClass.newInstance();
moduleSet.add(module);
}
catch (Exception ex)
{
logger.error(ex.getMessage(), ex);
}
}
/**
* Method description
*
*
*
* @param binder
* @param type
* @param bindingType
* @param <T>
*
* @return
*/
private <T> void bind(Binder binder, Class<T> type,
Class<? extends T> bindingType)
{
if (logger.isDebugEnabled())
{
logger.debug("bind {} of type {}", type.getName(), bindingType.getName());
}
binder.bind(type).to(bindingType);
}
//~--- fields ---------------------------------------------------------------
/** Field description */
private Set<Class<?>> extensions;
/** Field description */
private Set<Module> moduleSet;
/** Field description */
private Set<RepositoryListener> repositoryListeners =
new HashSet<RepositoryListener>();
/** Field description */
private Set<AuthenticationListener> authenticationListeners =
new HashSet<AuthenticationListener>();
/** Field description */
private Set<UserListener> userListeners = new HashSet<UserListener>();
/** Field description */
private Set<GroupListener> groupListeners = new HashSet<GroupListener>();
}