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			139 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			139 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#ifndef DBCONNECTION_H
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#define DBCONNECTION_H
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#include "db_ido/i2-db_ido.hpp"
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#include "db_ido/dbconnection-ti.hpp"
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#include "db_ido/dbobject.hpp"
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#include "db_ido/dbquery.hpp"
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#include "base/timer.hpp"
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#include "base/ringbuffer.hpp"
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#include <boost/thread/once.hpp>
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#include <mutex>
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namespace icinga
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{
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/**
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 * A database connection.
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 *
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 * @ingroup db_ido
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 */
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class DbConnection : public ObjectImpl<DbConnection>
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{
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public:
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	DECLARE_OBJECT(DbConnection);
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	static void InitializeDbTimer();
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	virtual const char * GetLatestSchemaVersion() const noexcept = 0;
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	virtual const char * GetCompatSchemaVersion() const noexcept = 0;
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	void SetConfigHash(const DbObject::Ptr& dbobj, const String& hash);
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	void SetConfigHash(const DbType::Ptr& type, const DbReference& objid, const String& hash);
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	String GetConfigHash(const DbObject::Ptr& dbobj) const;
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	String GetConfigHash(const DbType::Ptr& type, const DbReference& objid) const;
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	void SetObjectID(const DbObject::Ptr& dbobj, const DbReference& dbref);
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	DbReference GetObjectID(const DbObject::Ptr& dbobj) const;
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	void SetInsertID(const DbObject::Ptr& dbobj, const DbReference& dbref);
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	void SetInsertID(const DbType::Ptr& type, const DbReference& objid, const DbReference& dbref);
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	DbReference GetInsertID(const DbObject::Ptr& dbobj) const;
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	DbReference GetInsertID(const DbType::Ptr& type, const DbReference& objid) const;
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	void SetObjectActive(const DbObject::Ptr& dbobj, bool active);
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	bool GetObjectActive(const DbObject::Ptr& dbobj) const;
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	void ClearIDCache();
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	void SetConfigUpdate(const DbObject::Ptr& dbobj, bool hasupdate);
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	bool GetConfigUpdate(const DbObject::Ptr& dbobj) const;
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	void SetStatusUpdate(const DbObject::Ptr& dbobj, bool hasupdate);
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	bool GetStatusUpdate(const DbObject::Ptr& dbobj) const;
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	int GetQueryCount(RingBuffer::SizeType span);
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	virtual int GetPendingQueryCount() const = 0;
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	void ValidateFailoverTimeout(const Lazy<double>& lvalue, const ValidationUtils& utils) final;
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	void ValidateCategories(const Lazy<Array::Ptr>& lvalue, const ValidationUtils& utils) final;
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protected:
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	void OnConfigLoaded() override;
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	void Start(bool runtimeCreated) override;
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	void Stop(bool runtimeRemoved) override;
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	void Resume() override;
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	void Pause() override;
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	virtual void ExecuteQuery(const DbQuery& query) = 0;
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	virtual void ExecuteMultipleQueries(const std::vector<DbQuery>&) = 0;
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	virtual void ActivateObject(const DbObject::Ptr& dbobj) = 0;
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	virtual void DeactivateObject(const DbObject::Ptr& dbobj) = 0;
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	virtual void CleanUpExecuteQuery(const String& table, const String& time_column, double max_age);
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	virtual void FillIDCache(const DbType::Ptr& type) = 0;
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	virtual void NewTransaction() = 0;
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	virtual void Disconnect() = 0;
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	void UpdateObject(const ConfigObject::Ptr& object);
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	void UpdateAllObjects();
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	void PrepareDatabase();
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	void IncreaseQueryCount();
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	bool IsIDCacheValid() const;
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	void SetIDCacheValid(bool valid);
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	void EnableActiveChangedHandler();
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	static void UpdateProgramStatus();
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	static int GetSessionToken();
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	void IncreasePendingQueries(int count);
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	void DecreasePendingQueries(int count);
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	WorkQueue m_QueryQueue{10000000, 1, LogNotice};
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private:
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	bool m_IDCacheValid{false};
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	std::map<std::pair<DbType::Ptr, DbReference>, String> m_ConfigHashes;
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	std::map<DbObject::Ptr, DbReference> m_ObjectIDs;
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	std::map<std::pair<DbType::Ptr, DbReference>, DbReference> m_InsertIDs;
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	std::set<DbObject::Ptr> m_ActiveObjects;
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	std::set<DbObject::Ptr> m_ConfigUpdates;
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	std::set<DbObject::Ptr> m_StatusUpdates;
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	Timer::Ptr m_CleanUpTimer;
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	Timer::Ptr m_LogStatsTimer;
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	double m_LogStatsTimeout;
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	void CleanUpHandler();
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	void LogStatsHandler();
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	static Timer::Ptr m_ProgramStatusTimer;
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	static boost::once_flag m_OnceFlag;
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	static void InsertRuntimeVariable(const String& key, const Value& value);
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	mutable std::mutex m_StatsMutex;
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	RingBuffer m_QueryStats{15 * 60};
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	bool m_ActiveChangedHandler{false};
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	RingBuffer m_InputQueries{10};
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	RingBuffer m_OutputQueries{10};
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	Atomic<uint_fast64_t> m_PendingQueries{0};
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};
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struct database_error : virtual std::exception, virtual boost::exception { };
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struct errinfo_database_query_;
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typedef boost::error_info<struct errinfo_database_query_, std::string> errinfo_database_query;
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}
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#endif /* DBCONNECTION_H */
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