mirror of https://github.com/acanas/swad-core.git
133 lines
4.6 KiB
C
133 lines
4.6 KiB
C
// swad_figure_cache.c: figures (global stats) cached in database
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/*
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SWAD (Shared Workspace At a Distance),
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is a web platform developed at the University of Granada (Spain),
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and used to support university teaching.
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This file is part of SWAD core.
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Copyright (C) 1999-2024 Antonio Cañas Vargas
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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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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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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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*/
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/*****************************************************************************/
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/********************************* Headers ***********************************/
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/*****************************************************************************/
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#include <stdio.h> // For sscanf
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#include "swad_alert.h"
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#include "swad_database.h"
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#include "swad_figure_cache.h"
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#include "swad_figure_database.h"
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#include "swad_scope.h"
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#include "swad_string.h"
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/*****************************************************************************/
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/*************************** Update figure into cache ************************/
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/*****************************************************************************/
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void FigCch_UpdateFigureIntoCache (FigCch_FigureCached_t Figure,
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Hie_Level_t Level,long HieCod,
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FigCch_Type_t Type,const void *ValuePtr)
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{
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/***** Trivial check *****/
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if (Figure == FigCch_UNKNOWN)
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return;
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/***** Update figure's value in database *****/
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switch (Type)
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{
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case FigCch_UNSIGNED:
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Fig_DB_UpdateUnsignedFigureIntoCache (Figure,Level,HieCod,
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*((unsigned *) ValuePtr));
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break;
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case FigCch_DOUBLE:
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Fig_DB_UpdateDoubleFigureIntoCache (Figure,Level,HieCod,
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*((double *) ValuePtr));
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break;
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}
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}
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/*****************************************************************************/
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/************************** Get figure from cache ****************************/
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/*****************************************************************************/
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// Return true is figure is found (if figure is cached and recently updated)
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bool FigCch_GetFigureFromCache (FigCch_FigureCached_t Figure,
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Hie_Level_t Level,long HieCod,
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FigCch_Type_t Type,void *ValuePtr)
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{
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/* The higher the level, the longer a value remains cached */
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time_t TimeCached[Hie_NUM_LEVELS] = // Time in seconds
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{
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[Hie_UNK] = (time_t) ( 0), // Unknown
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[Hie_SYS] = (time_t) (24UL * 60UL * 60UL), // System
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[Hie_CTY] = (time_t) (12UL * 60UL * 60UL), // Country
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[Hie_INS] = (time_t) ( 6UL * 60UL * 60UL), // Institution
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[Hie_CTR] = (time_t) ( 3UL * 60UL * 60UL), // Center
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[Hie_DEG] = (time_t) ( 1UL * 60UL * 60UL), // Degree
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[Hie_CRS] = (time_t) ( 60UL), // Course
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};
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MYSQL_RES *mysql_res;
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MYSQL_ROW row;
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bool Found = false;
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/***** Set default value when not found *****/
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switch (Type)
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{
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case FigCch_UNSIGNED:
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*((unsigned *) ValuePtr) = 0;
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break;
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case FigCch_DOUBLE:
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*((double *) ValuePtr) = 0.0;
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break;
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}
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/***** Trivial check *****/
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if (Figure == FigCch_UNKNOWN || // Unknown figure
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Level == Hie_UNK) // Unknown scope
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return false;
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/***** Get figure's value if cached and recent *****/
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if (Fig_DB_GetFigureFromCache (&mysql_res,Figure,Level,HieCod,Type,TimeCached[Level]))
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{
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/* Get row */
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row = mysql_fetch_row (mysql_res);
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/* Get value (row[0]) */
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if (row[0])
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{
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switch (Type)
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{
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case FigCch_UNSIGNED:
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if (sscanf (row[0],"%u",(unsigned *) ValuePtr) == 1)
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Found = true;
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break;
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case FigCch_DOUBLE:
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Str_SetDecimalPointToUS (); // To write the decimal point as a dot
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if (sscanf (row[0],"%lf",(double *) ValuePtr) == 1)
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Found = true;
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Str_SetDecimalPointToLocal (); // Return to local system
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break;
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}
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}
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}
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/***** Free structure that stores the query result *****/
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DB_FreeMySQLResult (&mysql_res);
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return Found;
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}
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