ActivityMonitor.h

/**
* If not stated otherwise in this file or this component's LICENSE
* file the following copyright and licenses apply:
*
* Copyright 2019 RDK Management
*
* 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 <condition_variable>
#include <thread>
#include <mutex>

#include "Module.h"

namespace WPEFramework {

    namespace Plugin {

        struct MonitorParams;

		// This is a server for a JSONRPC communication channel.
		// For a plugin to be capable to handle JSONRPC, inherit from PluginHost::JSONRPC.
		// By inheriting from this class, the plugin realizes the interface PluginHost::IDispatcher.
		// This realization of this interface implements, by default, the following methods on this plugin
		// - exists
		// - register
		// - unregister
		// Any other methood to be handled by this plugin  can be added can be added by using the
		// templated methods Register on the PluginHost::JSONRPC class.
		// As the registration/unregistration of notifications is realized by the class PluginHost::JSONRPC,
		// this class exposes a public method called, Notify(), using this methods, all subscribed clients
		// will receive a JSONRPC message as a notification, in case this method is called.
        class ActivityMonitor : public PluginHost::IPlugin, public PluginHost::JSONRPC {
        private:

            // We do not allow this plugin to be copied !!
            ActivityMonitor(const ActivityMonitor&) = delete;
            ActivityMonitor& operator=(const ActivityMonitor&) = delete;

            //Begin methods
            uint32_t getApplicationMemoryUsage(const JsonObject& parameters, JsonObject& response);
            uint32_t getAllMemoryUsage(const JsonObject& parameters, JsonObject& response);
            uint32_t enableMonitoring(const JsonObject& parameters, JsonObject& response);
            uint32_t disableMonitoring(const JsonObject& parameters, JsonObject& response);
            //End methods

            //Begin events
            void onMemoryThresholdOccurred(const JsonObject& result);
            void onCPUThresholdOccurred(const JsonObject& result);
            //End events

        public:
            ActivityMonitor();
            virtual ~ActivityMonitor();
            virtual const string Initialize(PluginHost::IShell* shell) override { return {}; }
            virtual void Deinitialize(PluginHost::IShell* service) override;
            virtual string Information() const override { return {}; }

            BEGIN_INTERFACE_MAP(ActivityMonitor)
            INTERFACE_ENTRY(PluginHost::IPlugin)
            INTERFACE_ENTRY(PluginHost::IDispatcher)
            END_INTERFACE_MAP

        public:
            static ActivityMonitor* _instance;
        private:

            static void threadRun(ActivityMonitor *am);
            int threadStop();
            void monitoring();

            std::thread m_monitor;
            std::mutex m_monitoringMutex;
            std::condition_variable m_cond;

            MonitorParams *m_monitorParams;
            bool m_stopMonitoring;
        };
	} // namespace Plugin
} // namespace WPEFramework