| /* |
| * 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 _ACTIVEMQ_UTIL_SERVICESUPPORT_H_ |
| #define _ACTIVEMQ_UTIL_SERVICESUPPORT_H_ |
| |
| #include <activemq/util/Config.h> |
| #include <activemq/util/Service.h> |
| |
| #include <decaf/util/concurrent/atomic/AtomicBoolean.h> |
| #include <decaf/util/ArrayList.h> |
| |
| namespace activemq { |
| namespace util { |
| |
| class ServiceListener; |
| class ServiceStopper; |
| |
| /** |
| * Provides a base class for Service implementations. |
| * |
| * @since 3.3.0 |
| */ |
| class AMQCPP_API ServiceSupport : public Service { |
| private: |
| |
| decaf::util::concurrent::atomic::AtomicBoolean started; |
| decaf::util::concurrent::atomic::AtomicBoolean stopping; |
| decaf::util::concurrent::atomic::AtomicBoolean stopped; |
| decaf::util::ArrayList<ServiceListener*> listeners; |
| |
| public: |
| |
| ServiceSupport(const ServiceSupport&); |
| ServiceSupport& operator=(const ServiceSupport&); |
| |
| public: |
| |
| ServiceSupport(); |
| |
| virtual ~ServiceSupport(); |
| |
| public: |
| |
| /** |
| * Safely shuts down a service. |
| * |
| * @param service |
| * The service to stop. |
| */ |
| static void dispose(Service* service); |
| |
| /** |
| * Starts the Service, notifying any registered listeners of the start |
| * if it is successful. |
| */ |
| void start(); |
| |
| /** |
| * Stops the Service. |
| */ |
| void stop(); |
| |
| /** |
| * @return true if this service has been started |
| */ |
| bool isStarted() const; |
| |
| /** |
| * @return true if this service is in the process of closing |
| */ |
| bool isStopping() const; |
| |
| /** |
| * @return true if this service is closed |
| */ |
| bool isStopped() const; |
| |
| /** |
| * Adds the given listener to this Service's list of listeners, call retains |
| * ownership of the pointer. |
| */ |
| void addServiceListener(ServiceListener* listener); |
| |
| /** |
| * Removes the given listener to this Service's list of listeners, call retains |
| * ownership of the pointer. |
| */ |
| void removeServiceListener(ServiceListener* llistener); |
| |
| protected: |
| |
| /** |
| * Performs the actual stop operation on the service, ensuring that all |
| * resources held are released, must be implemented in derived class. |
| */ |
| virtual void doStop(ServiceStopper* stopper) = 0; |
| |
| /** |
| * Performs the actual start operation on the service, acquiring all the |
| * resources needed to run the service. Must be implemented in derived class. |
| */ |
| virtual void doStart() = 0; |
| |
| }; |
| |
| }} |
| |
| #endif /* _ACTIVEMQ_UTIL_SERVICESUPPORT_H_ */ |