From 132aa8a77685ec92bc90c03f987650d275a7b639 Mon Sep 17 00:00:00 2001 From: lresende Date: Mon, 30 Sep 2013 06:59:11 +0000 Subject: 2.0.1 RC1 release tag git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1527464 13f79535-47bb-0310-9956-ffa450edef68 --- .../remoteserviceadmin/impl/EndpointMatcher.java | 273 +++++++++++++++++++++ 1 file changed, 273 insertions(+) create mode 100644 sca-java-2.x/tags/2.0.1-RC1/modules/node-impl-osgi/src/main/java/org/apache/tuscany/sca/osgi/remoteserviceadmin/impl/EndpointMatcher.java (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/node-impl-osgi/src/main/java/org/apache/tuscany/sca/osgi/remoteserviceadmin/impl/EndpointMatcher.java') diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/node-impl-osgi/src/main/java/org/apache/tuscany/sca/osgi/remoteserviceadmin/impl/EndpointMatcher.java b/sca-java-2.x/tags/2.0.1-RC1/modules/node-impl-osgi/src/main/java/org/apache/tuscany/sca/osgi/remoteserviceadmin/impl/EndpointMatcher.java new file mode 100644 index 0000000000..f978ba658d --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/node-impl-osgi/src/main/java/org/apache/tuscany/sca/osgi/remoteserviceadmin/impl/EndpointMatcher.java @@ -0,0 +1,273 @@ +/* + * 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.tuscany.sca.osgi.remoteserviceadmin.impl; + +import java.util.Collection; +import java.util.Collections; +import java.util.HashSet; +import java.util.Hashtable; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.concurrent.ArrayBlockingQueue; +import java.util.concurrent.BlockingQueue; +import java.util.logging.Level; +import java.util.logging.Logger; + +import org.apache.tuscany.sca.common.java.collection.CollectionMap; +import org.osgi.framework.BundleContext; +import org.osgi.framework.Filter; +import org.osgi.framework.FrameworkUtil; +import org.osgi.framework.InvalidSyntaxException; +import org.osgi.framework.hooks.service.ListenerHook.ListenerInfo; +import org.osgi.service.remoteserviceadmin.EndpointDescription; + +/** + * Matching endpoint descriptions against the sevice listeners using OSGi filiters + */ +public class EndpointMatcher { + private static final Logger logger = Logger.getLogger(EndpointMatcher.class.getName()); + private final EndpointMap endpointDescriptions = new EndpointMap(); + private final ListenerMap listeners = new ListenerMap(); + private final BundleContext context; + private final BlockingQueue importQueue = new ArrayBlockingQueue(256, true); + + public EndpointMatcher(BundleContext context) { + super(); + this.context = context; + } + + public static boolean matches(String filter, EndpointDescription endpointDescription) { + Filter f = null; + try { + f = FrameworkUtil.createFilter(filter); + } catch (InvalidSyntaxException e) { + throw new IllegalArgumentException(e); + } + Hashtable props = new Hashtable(endpointDescription.getProperties()); + return f.match(props); + } + + private void importEndpoint(ListenerInfo listener, EndpointDescription ep) { + ImportAction request = new ImportAction(ImportAction.Type.Add, listener, ep); + try { + importQueue.put(request); + } catch (InterruptedException e) { + throw new IllegalArgumentException(e); + } + } + + private void unimportEndpoint(ListenerInfo listener, EndpointDescription ep) { + ImportAction request = new ImportAction(ImportAction.Type.Remove, listener, ep); + try { + importQueue.put(request); + } catch (InterruptedException e) { + throw new IllegalArgumentException(e); + } + } + + public synchronized void added(ListenerInfo listener) { + String filter = listener.getFilter(); + listeners.putValue(filter, listener); + for (EndpointDescription ep : getEndpoints(filter)) { + importEndpoint(listener, ep); + } + } + + public synchronized Collection added(Collection listeners) { + for (ListenerInfo listener : listeners) { + if (accepts(listener)) { + if (!listener.isRemoved() && listener.getBundleContext().getBundle().getBundleId() != 0L) { + added(listener); + } + } + } + return getFilters(); + } + + private boolean accepts(ListenerInfo listener) { + BundleContext context = listener.getBundleContext(); + return context != null && listener.getFilter() != null && context != this.context; + } + + public synchronized void removed(ListenerInfo listener) { + String filter = listener.getFilter(); + if (accepts(listener)) + if (listeners.removeValue(filter, listener, true)) { + // Find the corresponding ImportRegistration with the listener + for (EndpointDescription ep : getEndpoints(filter)) { + unimportEndpoint(listener, ep); + } + if (getListeners(filter).isEmpty()) { + // No more listeners on the this filter, clean up the endpoint descriptionss + endpointDescriptions.remove(filter); + } + + } + } + + public synchronized Collection removed(Collection listeners) { + for (ListenerInfo listener : listeners) { + removed(listener); + } + return getFilters(); + } + + public synchronized void added(EndpointDescription endpointDescription) { + for (Map.Entry> entry : listeners.entrySet()) { + if (matches(entry.getKey(), endpointDescription)) { + endpointDescriptions.putValue(entry.getKey(), endpointDescription); + for (ListenerInfo listener : entry.getValue()) { + importEndpoint(listener, endpointDescription); + } + } + } + } + + public synchronized void added(EndpointDescription endpointDescription, String matchedFilter) { + if (endpointDescriptions.putValue(matchedFilter, endpointDescription)) { + Collection listenerInfos = listeners.get(matchedFilter); + if (listenerInfos != null) { + for (ListenerInfo listener : listenerInfos) { + importEndpoint(listener, endpointDescription); + } + } + } + } + + public synchronized void removed(EndpointDescription endpointDescription, String matchedFilter) { + if (endpointDescriptions.removeValue(matchedFilter, endpointDescription, true)) { + for (ListenerInfo listener : getListeners(matchedFilter)) { + unimportEndpoint(listener, endpointDescription); + } + } + } + + public synchronized Set getFilters() { + return new HashSet(listeners.keySet()); + } + + public synchronized void clear() { + endpointDescriptions.clear(); + listeners.clear(); + importQueue.clear(); + } + + public synchronized Collection getListeners(String filter) { + Collection collection = listeners.get(filter); + if (collection == null) { + return Collections.emptySet(); + } else { + return collection; + } + } + + public synchronized Collection getEndpoints(String filter) { + Collection collection = endpointDescriptions.get(filter); + if (collection == null) { + return Collections.emptySet(); + } else { + return collection; + } + } + + public CollectionMap, ListenerInfo> groupListeners(EndpointDescription endpointDescription, + String matchedFilter) { + Collection snapshot = new HashSet(getListeners(matchedFilter)); + + // Try to partition the listeners by the interface classes + List interfaceNames = endpointDescription.getInterfaces(); + CollectionMap, ListenerInfo> interfaceToListeners = new CollectionMap, ListenerInfo>(); + for (String i : interfaceNames) { + for (Iterator it = snapshot.iterator(); it.hasNext();) { + try { + ListenerInfo listener = it.next(); + if (listener.isRemoved()) { + it.remove(); + continue; + } + if (!matchedFilter.equals(listener.getFilter())) { + continue; + } + try { + // The classloading can be synchronzed against the serviceListeners + Class interfaceClass = listener.getBundleContext().getBundle().loadClass(i); + interfaceToListeners.putValue(interfaceClass, listener); + } catch (IllegalStateException e) { + logger.log(Level.WARNING, e.getMessage(), e); + // Ignore the exception + } + } catch (ClassNotFoundException e) { + // Ignore the listener as it cannot load the interface class + } + } + } + return interfaceToListeners; + } + + public BlockingQueue getImportQueue() { + return importQueue; + } + + private static class ListenerMap extends CollectionMap { + private static final long serialVersionUID = -8612202123531331219L; + + @Override + protected Collection createCollection() { + return new HashSet(); + } + } + + private static class EndpointMap extends CollectionMap { + private static final long serialVersionUID = -6261405398109798549L; + + @Override + protected Collection createCollection() { + return new HashSet(); + } + } + + /** + * Representation of an import/unimport request + */ + public static class ImportAction { + enum Type { + Add, Remove + }; + + public final Type type; + public final ListenerInfo listenerInfo; + public final EndpointDescription endpointDescription; + + /** + * @param type + * @param listenerInfo + * @param endpointDescription + */ + public ImportAction(Type type, ListenerInfo listenerInfo, EndpointDescription endpointDescription) { + super(); + this.type = type; + this.listenerInfo = listenerInfo; + this.endpointDescription = endpointDescription; + } + } + +} -- cgit v1.2.3