diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet')
5 files changed, 299 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/Event.java b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/Event.java new file mode 100644 index 0000000000..bcc6bea7af --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/Event.java @@ -0,0 +1,51 @@ +/* + * 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.sample.comet; + +public class Event { + + private String id; + private String name; + private String data; + + public String getId() { + return id; + } + + public void setId(String id) { + this.id = id; + } + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public String getData() { + return data; + } + + public void setData(String data) { + this.data = data; + } + +} diff --git a/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessor.java b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessor.java new file mode 100644 index 0000000000..838d2f317c --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessor.java @@ -0,0 +1,107 @@ +/* + * 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.sample.comet; + +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.comet.runtime.callback.CometCallback; +import org.apache.tuscany.sca.binding.comet.runtime.callback.Status; +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, CometCallback> clients = new ConcurrentHashMap<String, CometCallback>(); + private Multimap<String, String> eventListeners = Multimaps.synchronizedMultimap(HashMultimap + .<String, String> create()); + + @Override + public void onEvent(String eventName, String eventData) { + // System.out.println("EventProcessor: Received event " + eventName + + // "..."); + 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) { + CometCallback client = clients.get(registrationId); + if (client == null) { + // client has unregistered from this event + synchronized (eventListeners) { + eventListeners.remove(eventName, registrationId); + } + } else { + Status status = client.sendMessage(event); + if (status == Status.CLIENT_DISCONNECTED) { + unregister(registrationId); + } + } + } + } + + @Override + public void register(String eventName) { + String registrationId = UUID.randomUUID().toString(); + CometCallback 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; + } +} diff --git a/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessorConsumerService.java b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessorConsumerService.java new file mode 100644 index 0000000000..c8208e862c --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessorConsumerService.java @@ -0,0 +1,37 @@ +/* + * 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.sample.comet; + +import org.apache.tuscany.sca.binding.comet.runtime.callback.CometCallback; +import org.oasisopen.sca.annotation.Callback; +import org.oasisopen.sca.annotation.OneWay; +import org.oasisopen.sca.annotation.Remotable; + +@Callback(CometCallback.class) +@Remotable +public interface EventProcessorConsumerService { + + @OneWay + void register(String eventName); + + @OneWay + void unregister(String registrationId); + +} diff --git a/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessorProducerService.java b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessorProducerService.java new file mode 100644 index 0000000000..49d760d171 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/EventProcessorProducerService.java @@ -0,0 +1,28 @@ +/* + * 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.sample.comet; + +import org.oasisopen.sca.annotation.Remotable; + +@Remotable +public interface EventProcessorProducerService { + + void onEvent(String eventName, String eventData); + +} diff --git a/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/Producer.java b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/Producer.java new file mode 100644 index 0000000000..59307824ce --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/binding-comet/pubsub-webapp/src/main/java/org/apache/tuscany/sca/sample/comet/Producer.java @@ -0,0 +1,76 @@ +/* + * 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.sample.comet; + +import java.util.Date; +import java.util.Timer; +import java.util.TimerTask; + +import org.oasisopen.sca.annotation.Constructor; +import org.oasisopen.sca.annotation.Destroy; +import org.oasisopen.sca.annotation.EagerInit; +import org.oasisopen.sca.annotation.Init; +import org.oasisopen.sca.annotation.Property; +import org.oasisopen.sca.annotation.Reference; +import org.oasisopen.sca.annotation.Scope; + +@EagerInit +@Scope("COMPOSITE") +public class Producer { + + @Reference + protected EventProcessorProducerService eventProcessor; + + private String eventName; + private long frequency; + + private Timer timer = new Timer(); + private Object lock = new Object(); + + @Constructor + public Producer(@Property(name = "eventName") String eventName, @Property(name = "frequency") long frequency) { + System.out.println("Producer: In Constructor with eventName=" + eventName + " and frequency=" + frequency); + this.eventName = eventName; + this.frequency = frequency; + } + + @Init + public void start() { + System.out.println("Producer: In Init..."); + timer.schedule(new TimerTask() { + + @Override + public void run() { +// System.out.println("Producer: Producing " + eventName + " event..."); + synchronized (lock) { + eventProcessor.onEvent(Producer.this.eventName, "Event @ " + new Date()); + } + } + }, 0L, this.frequency); + } + + @Destroy + public void stop() { + synchronized (lock) { + timer.cancel(); + } + timer = null; + } + +} |