org.jumpmind.symmetric.ext.ExtensionPointManager Maven / Gradle / Ivy
/**
* Licensed to JumpMind Inc under one or more contributor
* license agreements. See the NOTICE file distributed
* with this work for additional information regarding
* copyright ownership. JumpMind Inc licenses this file
* to you under the GNU General Public License, version 3.0 (GPLv3)
* (the "License"); you may not use this file except in compliance
* with the License.
*
* You should have received a copy of the GNU General Public License,
* version 3.0 (GPLv3) along with this library; if not, see
*
* SymmetricDS reads in any Spring XML file found in the classpath of the
* application that matches the following pattern:
* /META-INF/services/symmetric-*-ext.xml
*/
public class ExtensionPointManager implements IExtensionPointManager {
private final static Logger log = LoggerFactory.getLogger(ExtensionPointManager.class);
private boolean initialized = false;
private ISymmetricEngine engine;
private Map extensions;
private List extensionPoints = new ArrayList();
private ApplicationContext springContext;
public ExtensionPointManager(ISymmetricEngine engine, ApplicationContext springContext) {
this.engine = engine;
this.springContext = springContext;
}
public void register() {
if (!initialized) {
extensions = new TreeMap();
extensions.putAll(springContext.getBeansOfType(IExtensionPoint.class));
if (springContext.getParentBeanFactory() != null
&& springContext.getParentBeanFactory() instanceof ListableBeanFactory) {
extensions.putAll(((ListableBeanFactory) springContext.getParentBeanFactory())
.getBeansOfType(IExtensionPoint.class));
}
log.info("Found {} extension points that will be registered", extensions.size());
for (String beanName : extensions.keySet()) {
IExtensionPoint ext = extensions.get(beanName);
if (ext instanceof ISymmetricEngineAware) {
((ISymmetricEngineAware) ext).setSymmetricEngine(engine);
}
boolean registered = false;
boolean registerExtension = false;
if (ext instanceof INodeGroupExtensionPoint) {
String nodeGroupId = engine.getParameterService().getNodeGroupId();
INodeGroupExtensionPoint nodeExt = (INodeGroupExtensionPoint) ext;
String[] ids = nodeExt.getNodeGroupIdsToApplyTo();
if (ids != null) {
for (String targetNodeGroupId : ids) {
if (nodeGroupId.equals(targetNodeGroupId)) {
registerExtension = true;
}
}
} else {
registerExtension = true;
}
} else {
registerExtension = true;
}
if (registerExtension) {
registered = registerExtension(beanName, ext);
}
if (!registered) {
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, null, false));
}
}
this.initialized = true;
}
}
public List getExtensionPoints() {
return new ArrayList(extensionPoints);
}
protected boolean registerExtension(String beanName, IExtensionPoint ext) {
boolean installed = false;
if (ext instanceof IBuiltInExtensionPoint) {
log.debug("Registering an extension point named {} of type '{}' with SymmetricDS",
beanName, ext.getClass().getSimpleName());
} else {
log.info("Registering an extension point named {} of type '{}' with SymmetricDS",
beanName, ext.getClass().getSimpleName());
}
if (ext instanceof ISyncUrlExtension) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, ISyncUrlExtension.class,
true));
engine.getTransportManager().addExtensionSyncUrlHandler(beanName,
(ISyncUrlExtension) ext);
}
if (ext instanceof INodePasswordFilter) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName,
INodePasswordFilter.class, true));
engine.getNodeService().setNodePasswordFilter((INodePasswordFilter) ext);
engine.getRegistrationService().setNodePasswordFilter((INodePasswordFilter) ext);
}
if (ext instanceof IDataLoaderFactory) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, IDataLoaderFactory.class,
true));
engine.getDataLoaderService().addDataLoaderFactory((IDataLoaderFactory) ext);
}
if (ext instanceof IAcknowledgeEventListener) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName,
IAcknowledgeEventListener.class, true));
engine.getAcknowledgeService().addAcknowledgeEventListener(
(IAcknowledgeEventListener) ext);
}
if (ext instanceof ITriggerCreationListener) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName,
ITriggerCreationListener.class, true));
engine.getTriggerRouterService().addTriggerCreationListeners(
(ITriggerCreationListener) ext);
}
if (ext instanceof ILoadSyncLifecycleListener) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName,
ILoadSyncLifecycleListener.class, true));
engine.getDataLoaderService().addLoadSyncLifecycleListener((ILoadSyncLifecycleListener) ext);
}
if (ext instanceof IDatabaseWriterFilter) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName,
IDatabaseWriterFilter.class, true));
engine.getDataLoaderService().addDatabaseWriterFilter((IDatabaseWriterFilter) ext);
}
if (ext instanceof IDatabaseWriterErrorHandler) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName,
IDatabaseWriterErrorHandler.class, true));
engine.getDataLoaderService().addDatabaseWriterErrorHandler((IDatabaseWriterErrorHandler) ext);
}
if (ext instanceof IHeartbeatListener) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, IHeartbeatListener.class,
true));
engine.getDataService().addHeartbeatListener((IHeartbeatListener) ext);
}
if (ext instanceof IReloadListener) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, IReloadListener.class,
true));
engine.getDataService().addReloadListener((IReloadListener) ext);
}
if (ext instanceof IParameterFilter) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, IParameterFilter.class,
true));
engine.getParameterService().setParameterFilter((IParameterFilter) ext);
}
if (ext instanceof INodeIdGenerator) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, INodeIdGenerator.class,
true));
engine.getNodeService().setNodeIdCreator(
new NodeIdCreatorAdaptor((INodeIdGenerator) ext, engine.getNodeService()));
}
if (ext instanceof INodeIdCreator) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, INodeIdCreator.class,
true));
engine.getNodeService().setNodeIdCreator((INodeIdCreator) ext);
}
if (ext instanceof IDataRouter) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, IDataRouter.class, true));
engine.getRouterService().addDataRouter(beanName, (IDataRouter) ext);
}
if (ext instanceof IBatchAlgorithm) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName, IBatchAlgorithm.class,
true));
engine.getRouterService().addBatchAlgorithm(beanName, (IBatchAlgorithm) ext);
}
if (ext instanceof IOfflineClientListener) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName,
IOfflineClientListener.class, true));
engine.getPushService().addOfflineListener((IOfflineClientListener) ext);
engine.getPullService().addOfflineListener((IOfflineClientListener) ext);
}
if (ext instanceof IOfflineServerListener) {
installed = true;
extensionPoints.add(new ExtensionPointMetaData(ext, beanName,
IOfflineServerListener.class, true));
engine.getNodeService().addOfflineServerListener((IOfflineServerListener) ext);
}
if (ext instanceof IDatabaseUpgradeListener) {
engine.getSymmetricDialect().addDatabaseUpgradeListener((IDatabaseUpgradeListener) ext);
}
if (ext instanceof IAlterDatabaseInterceptor) {
engine.getSymmetricDialect().addAlterDatabaseInterceptor((IAlterDatabaseInterceptor)ext);
}
if (ext instanceof IColumnTransform) {
IColumnTransform t = (IColumnTransform) ext;
TransformWriter.addColumnTransform(t);
}
return installed;
}
@SuppressWarnings("unchecked")
public T getExtensionPoint(String name) {
if (extensions != null) {
return (T) extensions.get(name);
} else {
return null;
}
}
}