lifecycle_listener.h

/*
 * Copyright (c) 2008-2021, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed 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.
 */
#pragma once
 
#include <functional>
 
#include "hazelcast/util/export.h"
#include "hazelcast/util/noop.h"
#include "hazelcast/util/type_traits.h"
 
#if  defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
#pragma warning(push)
#pragma warning(disable: 4251) //for dll export
#endif
 
namespace hazelcast {
    namespace client {
        class lifecycle_event;
        namespace spi {
            class lifecycle_service;
        }
 
        class HAZELCAST_API lifecycle_listener final {
        public:
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &on_starting(Handler &&h) & {
                starting_ = std::forward<Handler>(h);
                return *this;
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &&on_starting(Handler &&h) && {
                on_starting(std::forward<Handler>(h));
                return std::move(*this);
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &on_started(Handler &&h) & {
                started_ = std::forward<Handler>(h);
                return *this;
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &&on_started(Handler &&h) && {
                on_started(std::forward<Handler>(h));
                return std::move(*this);
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &on_shutting_down(Handler &&h) & {
                shutting_down_ = std::forward<Handler>(h);
                return *this;
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &&on_shutting_down(Handler &&h) && {
                on_shutting_down(std::forward<Handler>(h));
                return std::move(*this);
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &on_shutdown(Handler &&h) & {
                shutdown_ = std::forward<Handler>(h);
                return *this;
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &&on_shutdown(Handler &&h) && {
                on_shutdown(std::forward<Handler>(h));
                return std::move(*this);
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &on_connected(Handler &&h) & {
                connected_ = std::forward<Handler>(h);
                return *this;
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &&on_connected(Handler &&h) && {
                on_connected(std::forward<Handler>(h));
                return std::move(*this);
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &on_disconnected(Handler &&h) & {
                disconnected_ = std::forward<Handler>(h);
                return *this;
            }
 
            template<typename Handler,
                     typename = util::enable_if_rvalue_ref_t<Handler &&>>
            lifecycle_listener &&on_disconnected(Handler &&h) && {
                on_disconnected(std::forward<Handler>(h));
                return std::move(*this);
            }
        
        private:
            using HandlerType = std::function<void()>;
            HandlerType starting_{ util::noop<> },
                        started_{ util::noop<> }, 
                        shutting_down_{ util::noop<> },
                        shutdown_{ util::noop<> },
                        connected_{ util::noop<> },
                        disconnected_{ util::noop<> };
 
            friend class spi::lifecycle_service;
        };
    }
}
 
#if  defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
#pragma warning(pop)
#endif