Configuration.h

/*
 * Configuration.h
 *
 *  Created on: 13.12.2017
 *      Author: Michael Ott (original), Micha Mueller
 */

#ifndef CONFIGURATION_H_
#define CONFIGURATION_H_

#include <set>

#include "HttpsServer.h"
#include <boost/log/trivial.hpp>
#include "includes/PluginDefinitions.h"

#define BROKERPORT 1883
#define BROKERHOST "127.0.0.1"

/**
 * Class responsible of reading the global configuration as well as loading and invoking required dynamic libraries.
 */
class Configuration : public GlobalConfiguration {
	
public:
	
	/**
     * Create new Configuration. Sets global config file to read from to cfgFile.
     * 
     * @param cfgFilePath	Path to where all config-files are located
     * @param cfgFileName   Name of the file containing the config
     */
	Configuration(const std::string& cfgFilePath, const std::string& cfgFileName) : GlobalConfiguration(cfgFilePath, cfgFileName) {}
	
	virtual ~Configuration();
	
	/**
	 * Reads the authentication keys and forwards them to the HttpsServer
	 *
	 * @param server	The Rest API server where to add the authkeys
	 * @return	true on success, false otherwise
	 */
	bool readAuthkeys(HttpsServer* server);

	/**
	 * Reads the plugin configuration section from global.conf (located at _cfgFilePath).
	 * Detects which sensor types are required and dynamically opens required plugins.
	 * Invokes the plugin to read its configuration and generate specified sensors.
	 *
	 * @return	true on success, false otherwise
	 */
	bool readPlugins();
	
	/**
	 * Return all plugins (in form of their dl_t struct)
	 */
	pluginVector_t& getPlugins() { return _plugins; }
	
	// Additional configuration parameters to be parsed and stored in the global block
	int qosLevel = 1;
	unsigned int maxInflightMsgNum = 20;
	unsigned int maxQueuedMsgNum = 0;
	int brokerPort = BROKERPORT;
	std::string brokerHost = BROKERHOST;
	int maxMsgNum = 0;
	
protected:

	bool readAdditionalValues(boost::property_tree::iptree::value_type &global) override;
	
	/**
	 * Vector which holds data of the opened plugins.
	 * Only references to this member should be handed around, to keep the plugins everywhere in sync.
	 */
	pluginVector_t _plugins;
};

#endif /* CONFIGURATION_H_ */