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534 lines
11 KiB
C++
534 lines
11 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef RY_PDS_DATABASE_H
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#define RY_PDS_DATABASE_H
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//
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// NeL includes
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//
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#include <nel/misc/types_nl.h>
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#include <nel/misc/common.h>
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#include <nel/misc/time_nl.h>
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#include <nel/misc/stream.h>
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#include <nel/misc/i_xml.h>
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//
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// PDS includes
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//
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#include "../pd_lib/pds_types.h"
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#include "../pd_lib/pds_common.h"
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#include "../pd_lib/db_description_parser.h"
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#include "../pd_lib/pd_utils.h"
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#include "../pd_lib/pd_server_utils.h"
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//#include "../pd_lib/pd_string_manager.h"
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#include "../pd_lib/pd_string_mapper.h"
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//
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// stl includes
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//
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#include <vector>
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#include <deque>
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class CType;
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class CTable;
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class CAttribute;
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class CColumn;
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namespace RY_PDS
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{
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class CDbMessageQueue;
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};
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/**
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* Definition of the database
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* This class contains tables and types definitions
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* \author Benjamin Legros
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* \author Nevrax France
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* \date 2004
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*/
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class CDatabase : public CPDSLogger, public ITaskEventListener, public RY_PDS::ITableContainer
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{
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public:
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/**
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* Constructor
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*/
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CDatabase(uint32 id);
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/**
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* Destructor
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*/
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~CDatabase();
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/**
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* Massive Database clear
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*/
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void clear();
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/**
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* Init database
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*/
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bool init();
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/**
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* Map to a service
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*/
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void mapToService(NLNET::TServiceId serviceId) { _ServiceId = serviceId; }
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/**
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* Get Mapped Service Id
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*/
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NLNET::TServiceId getMappedService() const { return _ServiceId; }
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/// Initialized yet?
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bool initialised() const { return _Init; }
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/**
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* Adapt database to new description
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* \param description is the latest xml description of the database
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* \returns a pointer the valid database, or NULL if failed
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*/
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CDatabase* adapt(const std::string& description);
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/**
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* Initialise internal timestamps
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*/
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void initTimestamps();
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/**
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* Checkup database
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*/
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bool checkup();
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/**
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* Get Name
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*/
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const std::string& getName() const { return _State.Name; }
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/**
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* Get Type
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*/
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const CType* getType(TTypeId typeId) const;
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/**
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* Get Type
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*/
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const CType* getType(const std::string &name) const;
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/**
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* Get Table
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*/
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const CTable* getTable(TTypeId tableId) const;
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/**
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* Get Table
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*/
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const CTable* getTable(const std::string &name) const;
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/**
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* Get Attribute
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*/
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const CAttribute* getAttribute(uint32 tableId, uint32 attributeId) const;
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/**
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* Get Column
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*/
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const CColumn* getColumn(uint32 tableId, uint32 columnId) const;
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/**
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* Get value as a string
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* \param path is of the form 'Table[index|key].attrib1.attrib2'
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*/
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std::string getValue(const CLocatePath::TLocatePath &path);
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/**
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* Allocate a row in a table
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* \param index is the table/row to allocate
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* Return true if succeded
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*/
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bool allocate(const RY_PDS::CObjectIndex &index);
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/**
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* Deallocate a row in a table
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* \param index is the table/row to deallocate
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* Return true if succeded
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*/
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bool deallocate(const RY_PDS::CObjectIndex &index);
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/**
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* Map a row in a table
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* \param index is the table/row to allocate
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* \param key is the 64 bits row key
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* Return true if succeded
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*/
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bool mapRow(const RY_PDS::CObjectIndex &index, uint64 key);
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/**
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* Unmap a row in a table
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* \param tableIndex is the table to find row
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* \param key is the 64 bits row key
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* Return true if succeded
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*/
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bool unmapRow(RY_PDS::TTableIndex tableIndex, uint64 key);
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/**
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* Get a mapped row
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* \param tableIndex is the table in which the row is mapped
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* \param key is the 64 bits row key
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* Return a valid CObjectIndex if success
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*/
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RY_PDS::CObjectIndex getMappedRow(RY_PDS::TTableIndex tableIndex, uint64 key) const;
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/**
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* Search object in database using its key
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* \param key is the 64 bits row key to search through all tables
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* Return true if key matches at lease one object
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*/
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bool searchObjectIndex(uint64 key, std::set<RY_PDS::CObjectIndex>& indexes) const;
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/**
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* Release a row in a table
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* \param index is the table/row to release
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* Return true if succeded
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*/
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bool release(const RY_PDS::CObjectIndex &index);
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/**
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* Release all rows in all table
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* Typically, the client disconnected, there is no need to keep rows
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*/
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bool releaseAll();
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/**
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* Tells if an object is allocated
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* \param object is the object index to test
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*/
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bool isAllocated(const RY_PDS::CObjectIndex &index) const;
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/**
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* Set an item in database, located by its table, row and column.
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* \param datasize is provided for validation check (1, 2, 4 or 8 bytes)
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* \param dataptr points to raw data, which may be 1, 2, 4 or 8 bytes, as indicated by datasize
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*/
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bool set(RY_PDS::TTableIndex table, RY_PDS::TRowIndex row, RY_PDS::TColumnIndex column, uint datasize, const void* dataptr);
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/**
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* Set an object parent
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*/
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bool setParent(RY_PDS::TTableIndex table, RY_PDS::TRowIndex row, RY_PDS::TColumnIndex column, const RY_PDS::CObjectIndex &parent);
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/**
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* Set an item from database, located by its table, row and column.
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* \param dataptr points to raw data, which may be 1, 2, 4 or 8 bytes long, as indicated by datasize, where to store data
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* \param datasize is the size of the dataptr buffer. At return, it is the size of actual data stored in buffer, that may have been
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* truncated, if possible
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* \param type is the TDataType of data stored at dataptr
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*/
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bool get(RY_PDS::TTableIndex table, RY_PDS::TRowIndex row, RY_PDS::TColumnIndex column, uint& datasize, void* dataptr, TDataType& type);
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/**
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* Get Table (non const)
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*/
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CTable* getNonConstTable(RY_PDS::TTableIndex table);
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/**
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* Get Object list
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*/
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RY_PDS::CSetMap& getSetMap() { return _SetMap; }
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/**
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* Get Object list
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*/
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const RY_PDS::CSetMap& getSetMap() const { return _SetMap; }
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/**
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* Get String Manager
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*/
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// RY_PDS::CPDStringManager& getStringManager() { return _StringManager; }
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/**
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* Fetch data
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*/
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bool fetch(const RY_PDS::CObjectIndex& index, RY_PDS::CPData &data, bool fetchIndex = true);
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/**
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* Display database
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*/
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void display(NLMISC::CLog* log = NLMISC::InfoLog, bool displayHeader = false) const;
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/**
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* Set value with human readable parameters
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*/
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bool set(RY_PDS::TTableIndex table, RY_PDS::TRowIndex row, RY_PDS::TColumnIndex column, const std::string& type, const std::string &value);
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/**
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* Dump database content and info of an object to xml
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*/
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void dumpToXml(const RY_PDS::CObjectIndex& index, NLMISC::IStream& xml, sint expandDepth = -1);
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/**
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* Get Update Queue for id
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* May return NULL if message was already received
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*/
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RY_PDS::CDbMessageQueue* getUpdateMessageQueue(uint32 updateId);
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/**
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* Receive update
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*/
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void receiveUpdate(uint32 id);
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/**
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* Get Last Update Id
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*/
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uint32 getLastUpdateId() const { return _State.LastUpdateId; }
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/**
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* Flush updates
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*/
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void flushUpdates(std::vector<uint32>& acknowledged);
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/**
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* Serialise SheetId String Mapper
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*/
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void serialSheetIdStringMapper(NLMISC::IStream& f);
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private:
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/// Initialised yet?
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bool _Init;
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/// Current Database State
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CDatabaseState _State;
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/// Service Id mapped
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NLNET::TServiceId _ServiceId;
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/// Description
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CDBDescriptionParser _Description;
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/// Reference index
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CRefIndex _Reference;
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/// Types in database
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std::vector<CType*> _Types;
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/// Tables in database
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std::vector<CTable*> _Tables;
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/// Common object list
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RY_PDS::CSetMap _SetMap;
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/// String manager
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// RY_PDS::CPDStringManager _StringManager;
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/// Last Minute Update Timestamp
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CTimestamp _MinuteUpdateTimestamp;
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/// Last Minute Update Timestamp
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CTimestamp _HourUpdateTimestamp;
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/// Last Minute Update Timestamp
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CTimestamp _DayUpdateTimestamp;
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/// Creation Timestamp
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CTimestamp _CreationTimestamp;
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/// Received updates
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std::vector<uint32> _ReceivedUpdates;
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/// SheetId String Mapper
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CPDStringMapper _SheetIdStringMapper;
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/// FIFO of logs
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typedef std::list<RY_PDS::CUpdateLog> TUpdateLogQueue;
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/// Log of database updates
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TUpdateLogQueue _LogQueue;
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public:
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/// \name RBS Task Event listener interface
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// @{
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/// Task ran successfully
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virtual void taskSuccessful(void* arg);
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/// Task failed!
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virtual void taskFailed(void* arg);
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// @}
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/// \name ITableContainer interface
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// @{
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/// Get Table Index from name
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virtual RY_PDS::TTableIndex getTableIndex(const std::string& tableName) const;
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/// Get Table Index from name
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virtual std::string getTableName(RY_PDS::TTableIndex index) const;
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// @}
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protected:
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virtual std::string getLoggerIdentifier() const { return NLMISC::toString("db:%s", (_State.Name.empty() ? "<unnamed>" : _State.Name.c_str())); }
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public:
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/**
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* Load previous database state and create a new temporary reference if needed (after a crash, for instance)
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*/
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bool loadState();
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/**
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* Check if reference is still the same
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*/
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bool checkReferenceChange();
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/**
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* Create new database from scratch, setup everything needed (references, etc.)
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* \param description is the xml database description
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*/
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bool createFromScratch(const std::string& description);
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/**
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* Check if reference is up to date
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* Returns true if reference is the latest valid database image
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*/
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bool isReferenceUpToDate();
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/**
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* Build a up to date reference in a temp directory.
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* Setup 'ref' file, so that it points to new reference.
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*/
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bool buildReference();
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/**
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* Build the delta files and purge all dirty rows in tables
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*/
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bool buildDelta(const CTimestamp& starttime, const CTimestamp& endtime);
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/**
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* Flush database from released rows
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*/
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bool flushReleased();
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/**
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* Notify a new reference is ready
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*/
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bool notifyNewReference(bool validateRef = true);
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/**
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* Build index allocators
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* One per table
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*/
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bool buildIndexAllocators(std::vector<RY_PDS::CIndexAllocator> &allocators);
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/**
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* Rebuild forwardrefs from backrefs
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*/
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bool rebuildForwardRefs();
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/**
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* Rebuild table maps
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*/
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bool rebuildTableMaps();
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/**
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* Reset dirty lists
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*/
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bool resetDirtyTags();
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/**
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* Reset and rebuild all maps, references, lists...
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*/
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bool rebuildVolatileData();
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/**
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* Static Check for update rate
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*/
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static void checkUpdateRates();
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/**
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* Send Delta/Reference build commands
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*/
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bool sendBuildCommands(const CTimestamp& current);
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private:
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friend class CDatabaseAdapter;
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};
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// include inlines
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#include "pds_database_inline.h"
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#endif //RY_PDS_DATABASE_H
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