Sat Mar 10 01:54:06 2012

Asterisk developer's documentation


cdr_sqlite.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 2004 - 2005, Holger Schurig
00005  *
00006  *
00007  * Ideas taken from other cdr_*.c files
00008  *
00009  * See http://www.asterisk.org for more information about
00010  * the Asterisk project. Please do not directly contact
00011  * any of the maintainers of this project for assistance;
00012  * the project provides a web site, mailing lists and IRC
00013  * channels for your use.
00014  *
00015  * This program is free software, distributed under the terms of
00016  * the GNU General Public License Version 2. See the LICENSE file
00017  * at the top of the source tree.
00018  */
00019 
00020 /*!
00021  * \file
00022  * \brief Store CDR records in a SQLite database.
00023  *
00024  * \author Holger Schurig <hs4233@mail.mn-solutions.de>
00025  * \extref SQLite http://www.sqlite.org/
00026  *
00027  * See also
00028  * \arg \ref Config_cdr
00029  * \arg http://www.sqlite.org/
00030  *
00031  * Creates the database and table on-the-fly
00032  * \ingroup cdr_drivers
00033  *
00034  * \note This module has been marked deprecated in favor for cdr_sqlite3_custom
00035  */
00036 
00037 /*** MODULEINFO
00038    <depend>sqlite</depend>
00039    <support_level>deprecated</support_level>
00040    <replacement>sqlite3_custom</replacement>
00041  ***/
00042 
00043 #include "asterisk.h"
00044 
00045 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 328446 $")
00046 
00047 #include <sqlite.h>
00048 
00049 #include "asterisk/channel.h"
00050 #include "asterisk/module.h"
00051 #include "asterisk/utils.h"
00052 #include "asterisk/paths.h"
00053 
00054 #define LOG_UNIQUEID    0
00055 #define LOG_USERFIELD   0
00056 #define LOG_HRTIME      0
00057 
00058 /* When you change the DATE_FORMAT, be sure to change the CHAR(19) below to something else */
00059 #define DATE_FORMAT "%Y-%m-%d %T"
00060 
00061 static const char name[] = "sqlite";
00062 static sqlite* db = NULL;
00063 
00064 AST_MUTEX_DEFINE_STATIC(sqlite_lock);
00065 
00066 /*! \brief SQL table format */
00067 static const char sql_create_table[] = "CREATE TABLE cdr ("
00068 "  AcctId      INTEGER PRIMARY KEY,"
00069 "  clid     VARCHAR(80),"
00070 "  src      VARCHAR(80),"
00071 "  dst      VARCHAR(80),"
00072 "  dcontext VARCHAR(80),"
00073 "  channel     VARCHAR(80),"
00074 "  dstchannel  VARCHAR(80),"
00075 "  lastapp     VARCHAR(80),"
00076 "  lastdata VARCHAR(80),"
00077 "  start    CHAR(19),"
00078 "  answer      CHAR(19),"
00079 "  end      CHAR(19),"
00080 #if LOG_HRTIME
00081 "  duration FLOAT,"
00082 "  billsec     FLOAT,"
00083 #else
00084 "  duration INTEGER,"
00085 "  billsec     INTEGER,"
00086 #endif
00087 "  disposition INTEGER,"
00088 "  amaflags INTEGER,"
00089 "  accountcode VARCHAR(20)"
00090 #if LOG_UNIQUEID
00091 "  ,uniqueid   VARCHAR(32)"
00092 #endif
00093 #if LOG_USERFIELD
00094 "  ,userfield  VARCHAR(255)"
00095 #endif
00096 ");";
00097 
00098 static void format_date(char *buffer, size_t length, struct timeval *when)
00099 {
00100    struct ast_tm tm;
00101 
00102    ast_localtime(when, &tm, NULL);
00103    ast_strftime(buffer, length, DATE_FORMAT, &tm);
00104 }
00105 
00106 static int sqlite_log(struct ast_cdr *cdr)
00107 {
00108    int res = 0;
00109    char *zErr = 0;
00110    char startstr[80], answerstr[80], endstr[80];
00111    int count;
00112 #if LOG_HRTIME
00113    double hrbillsec = 0.0;
00114    double hrduration;
00115 #endif
00116 
00117    ast_mutex_lock(&sqlite_lock);
00118 
00119    format_date(startstr, sizeof(startstr), &cdr->start);
00120    format_date(answerstr, sizeof(answerstr), &cdr->answer);
00121    format_date(endstr, sizeof(endstr), &cdr->end);
00122 
00123 #if LOG_HRTIME
00124    if (!ast_tvzero(cdr->answer)) {
00125       hrbillsec = (double) ast_tvdiff_us(cdr->end, cdr->answer) / 1000000.0;
00126    }
00127    hrduration = (double) ast_tvdiff_us(cdr->end, cdr->start) / 1000000.0;
00128 #endif
00129 
00130    for(count=0; count<5; count++) {
00131       res = sqlite_exec_printf(db,
00132          "INSERT INTO cdr ("
00133             "clid,src,dst,dcontext,"
00134             "channel,dstchannel,lastapp,lastdata, "
00135             "start,answer,end,"
00136             "duration,billsec,disposition,amaflags, "
00137             "accountcode"
00138 #           if LOG_UNIQUEID
00139             ",uniqueid"
00140 #           endif
00141 #           if LOG_USERFIELD
00142             ",userfield"
00143 #           endif
00144          ") VALUES ("
00145             "'%q', '%q', '%q', '%q', "
00146             "'%q', '%q', '%q', '%q', "
00147             "'%q', '%q', '%q', "
00148 #if LOG_HRTIME
00149             "%f, %f, %d, %d, "
00150 #else
00151             "%d, %d, %d, %d, "
00152 #endif
00153             "'%q'"
00154 #           if LOG_UNIQUEID
00155             ",'%q'"
00156 #           endif
00157 #           if LOG_USERFIELD
00158             ",'%q'"
00159 #           endif
00160          ")", NULL, NULL, &zErr,
00161             cdr->clid, cdr->src, cdr->dst, cdr->dcontext,
00162             cdr->channel, cdr->dstchannel, cdr->lastapp, cdr->lastdata,
00163             startstr, answerstr, endstr,
00164 #if LOG_HRTIME
00165             hrduration, hrbillsec, cdr->disposition, cdr->amaflags,
00166 #else
00167             cdr->duration, cdr->billsec, cdr->disposition, cdr->amaflags,
00168 #endif
00169             cdr->accountcode
00170 #           if LOG_UNIQUEID
00171             ,cdr->uniqueid
00172 #           endif
00173 #           if LOG_USERFIELD
00174             ,cdr->userfield
00175 #           endif
00176          );
00177       if (res != SQLITE_BUSY && res != SQLITE_LOCKED)
00178          break;
00179       usleep(200);
00180    }
00181 
00182    if (zErr) {
00183       ast_log(LOG_ERROR, "cdr_sqlite: %s\n", zErr);
00184       ast_free(zErr);
00185    }
00186 
00187    ast_mutex_unlock(&sqlite_lock);
00188    return res;
00189 }
00190 
00191 static int unload_module(void)
00192 {
00193    ast_cdr_unregister(name);
00194    if (db) {
00195       sqlite_close(db);
00196    }
00197    return 0;
00198 }
00199 
00200 static int load_module(void)
00201 {
00202    char *zErr;
00203    char fn[PATH_MAX];
00204    int res;
00205 
00206    ast_log(LOG_NOTICE, "This module has been marked deprecated in favor of "
00207       "using cdr_sqlite3_custom.\n");
00208 
00209    /* is the database there? */
00210    snprintf(fn, sizeof(fn), "%s/cdr.db", ast_config_AST_LOG_DIR);
00211    db = sqlite_open(fn, AST_FILE_MODE, &zErr);
00212    if (!db) {
00213       ast_log(LOG_ERROR, "cdr_sqlite: %s\n", zErr);
00214       ast_free(zErr);
00215       return AST_MODULE_LOAD_DECLINE;
00216    }
00217 
00218    /* is the table there? */
00219    res = sqlite_exec(db, "SELECT COUNT(AcctId) FROM cdr;", NULL, NULL, NULL);
00220    if (res) {
00221       res = sqlite_exec(db, sql_create_table, NULL, NULL, &zErr);
00222       if (res) {
00223          ast_log(LOG_ERROR, "cdr_sqlite: Unable to create table 'cdr': %s\n", zErr);
00224          ast_free(zErr);
00225          goto err;
00226       }
00227 
00228       /* TODO: here we should probably create an index */
00229    }
00230 
00231    res = ast_cdr_register(name, ast_module_info->description, sqlite_log);
00232    if (res) {
00233       ast_log(LOG_ERROR, "Unable to register SQLite CDR handling\n");
00234       return AST_MODULE_LOAD_DECLINE;
00235    }
00236    return AST_MODULE_LOAD_SUCCESS;
00237 
00238 err:
00239    if (db)
00240       sqlite_close(db);
00241    return AST_MODULE_LOAD_DECLINE;
00242 }
00243 
00244 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "SQLite CDR Backend",
00245    .load = load_module,
00246    .unload = unload_module,
00247    .load_pri = AST_MODPRI_CDR_DRIVER,
00248 );

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