icinga2/lib/livestatus/table.hpp

/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */

#ifndef TABLE_H
#define TABLE_H

#include "livestatus/column.hpp"
#include "base/object.hpp"
#include "base/dictionary.hpp"
#include "base/array.hpp"
#include <vector>

namespace icinga
{

// Well, don't ask.
#define LIVESTATUS_INTERVAL_LENGTH 60.0

struct LivestatusRowValue {
	Value Row;
	LivestatusGroupByType GroupByType;
	Value GroupByObject;
};

typedef std::function<bool (const Value&, LivestatusGroupByType, const Object::Ptr&)> AddRowFunction;

class Filter;

/**
 * @ingroup livestatus
 */
class Table : public Object
{
public:
	DECLARE_PTR_TYPEDEFS(Table);

	static Table::Ptr GetByName(const String& name, const String& compat_log_path = "", const unsigned long& from = 0, const unsigned long& until = 0);

	virtual String GetName() const = 0;
	virtual String GetPrefix() const = 0;

	std::vector<LivestatusRowValue> FilterRows(const intrusive_ptr<Filter>& filter, int limit = -1);

	void AddColumn(const String& name, const Column& column);
	Column GetColumn(const String& name) const;
	std::vector<String> GetColumnNames() const;

	LivestatusGroupByType GetGroupByType() const;

protected:
	Table(LivestatusGroupByType type = LivestatusGroupByNone);

	virtual void FetchRows(const AddRowFunction& addRowFn) = 0;

	static Value ZeroAccessor(const Value&);
	static Value OneAccessor(const Value&);
	static Value EmptyStringAccessor(const Value&);
	static Value EmptyArrayAccessor(const Value&);
	static Value EmptyDictionaryAccessor(const Value&);

	LivestatusGroupByType m_GroupByType;
	Value m_GroupByObject;

private:
	std::map<String, Column> m_Columns;

	bool FilteredAddRow(std::vector<LivestatusRowValue>& rs, const intrusive_ptr<Filter>& filter, int limit, const Value& row, LivestatusGroupByType groupByType, const Object::Ptr& groupByObject);
};

}

#endif /* TABLE_H */

#include "livestatus/filter.hpp"