| /** |
| * 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. |
| */ |
| |
| #ifndef _ACTIVEMQCPP_EXAMPLES_ADVISORIES_ADVISORYPRODUCER_H_ |
| #define _ACTIVEMQCPP_EXAMPLES_ADVISORIES_ADVISORYPRODUCER_H_ |
| |
| #include <string> |
| #include <memory> |
| |
| #include <cms/Session.h> |
| #include <cms/MessageProducer.h> |
| #include <cms/MessageConsumer.h> |
| #include <cms/MessageListener.h> |
| |
| #include <decaf/lang/Runnable.h> |
| #include <decaf/util/concurrent/CountDownLatch.h> |
| |
| namespace activemqcpp { |
| namespace examples { |
| namespace advisories { |
| |
| /** |
| * A sample Producer that will only send Messages on its Topic when it has |
| * received an advisory indicating that there is an active MessageConsumer |
| * on the Topic. Once another message comes in indicating that there is no |
| * longer a consumer then this Producer stops producing again. |
| * |
| * @since 3.0 |
| */ |
| class AdvisoryProducer : public decaf::lang::Runnable, |
| public cms::MessageListener { |
| private: |
| |
| volatile bool consumerOnline; |
| volatile bool shutdown; |
| decaf::util::concurrent::CountDownLatch shutdownLatch; |
| |
| cms::Session* session; |
| std::auto_ptr<cms::MessageConsumer> consumer; |
| std::auto_ptr<cms::MessageProducer> producer; |
| |
| private: |
| |
| AdvisoryProducer( const AdvisoryProducer& ); |
| AdvisoryProducer& operator= ( const AdvisoryProducer& ); |
| |
| public: |
| |
| AdvisoryProducer( cms::Session* session ); |
| virtual ~AdvisoryProducer(); |
| |
| /** |
| * Shut down the processing that occurs in the Run method. |
| */ |
| void stop(); |
| |
| /** |
| * Run the producer code. |
| */ |
| virtual void run(); |
| |
| /** |
| * Async Message callback. |
| */ |
| virtual void onMessage( const cms::Message* message ); |
| |
| }; |
| |
| }}} |
| |
| #endif /* _ACTIVEMQCPP_EXAMPLES_ADVISORIES_ADVISORYPRODUCER_H_ */ |