diff options
author | antelder <antelder@13f79535-47bb-0310-9956-ffa450edef68> | 2012-03-07 08:40:04 +0000 |
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committer | antelder <antelder@13f79535-47bb-0310-9956-ffa450edef68> | 2012-03-07 08:40:04 +0000 |
commit | 61d713f05fa632b03c3ec38ca224e28de5f0ffd8 (patch) | |
tree | 4334322a90bda845473345e997c099f29477fd68 /sca-java-2.x/tags/2.0-Beta4-RC1/samples/learning-more/binding-websocket/pubsub-webapp/src/main/java/sample/EventProcessor.java | |
parent | f742a208acdf8fdfa7352d16e083403b76998d06 (diff) |
Tag for beta4 Rc1
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1297882 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-java-2.x/tags/2.0-Beta4-RC1/samples/learning-more/binding-websocket/pubsub-webapp/src/main/java/sample/EventProcessor.java')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta4-RC1/samples/learning-more/binding-websocket/pubsub-webapp/src/main/java/sample/EventProcessor.java | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta4-RC1/samples/learning-more/binding-websocket/pubsub-webapp/src/main/java/sample/EventProcessor.java b/sca-java-2.x/tags/2.0-Beta4-RC1/samples/learning-more/binding-websocket/pubsub-webapp/src/main/java/sample/EventProcessor.java new file mode 100644 index 0000000000..d289b361cf --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta4-RC1/samples/learning-more/binding-websocket/pubsub-webapp/src/main/java/sample/EventProcessor.java @@ -0,0 +1,104 @@ +/* + * 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 sample; + +import java.util.ArrayList; +import java.util.Date; +import java.util.List; +import java.util.UUID; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.ConcurrentMap; + +import org.apache.tuscany.sca.binding.websocket.runtime.WebsocketBindingCallback; +import org.apache.tuscany.sca.binding.websocket.runtime.WebsocketStatus; +import org.oasisopen.sca.ComponentContext; +import org.oasisopen.sca.annotation.Context; +import org.oasisopen.sca.annotation.Destroy; +import org.oasisopen.sca.annotation.Scope; +import org.oasisopen.sca.annotation.Service; + +import com.google.common.collect.HashMultimap; +import com.google.common.collect.Multimap; +import com.google.common.collect.Multimaps; + +@Service({ EventProcessorConsumerService.class, EventProcessorProducerService.class }) +@Scope("COMPOSITE") +public class EventProcessor implements EventProcessorConsumerService, EventProcessorProducerService { + + @Context + protected ComponentContext componentContext; + + private ConcurrentMap<String, WebsocketBindingCallback> clients = new ConcurrentHashMap<String, WebsocketBindingCallback>(); + private Multimap<String, String> eventListeners = Multimaps.synchronizedMultimap(HashMultimap.<String, String> create()); + + @Override + public void onEvent(String eventName, String eventData) { + List<String> destinations = new ArrayList<String>(); + synchronized (eventListeners) { + destinations.addAll(eventListeners.get(eventName)); + } + Event event = new Event(); + event.setName(eventName); + event.setData(eventData); + for (String registrationId : destinations) { + WebsocketBindingCallback client = clients.get(registrationId); + if (client == null) { + // client has unregistered from this event + synchronized (eventListeners) { + eventListeners.remove(eventName, registrationId); + } + } else { + WebsocketStatus status = client.sendMessage(event); + if (status == WebsocketStatus.CLOSED) { + unregister(registrationId); + } + } + } + } + + @Override + public void register(String eventName) { + String registrationId = UUID.randomUUID().toString(); + WebsocketBindingCallback callback = componentContext.getRequestContext().getCallback(); + clients.put(registrationId, callback); + synchronized (eventListeners) { + eventListeners.put(eventName, registrationId); + } + Event event = new Event(); + event.setId(registrationId); + event.setName(eventName); + event.setData(new Date().toString()); + callback.sendMessage(event); + } + + @Override + public void unregister(String registrationId) { + clients.remove(registrationId); + // unregistration from eventListeners done during onEvent + } + + @Destroy + public void shutdown() { + clients.clear(); + eventListeners.clear(); + clients = null; + eventListeners = null; + } +} |