cdr/cdr_pgsql.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 2003 - 2006
   5  *
   6  * Matthew D. Hardeman <mhardemn@papersoft.com>
   7  * Adapted from the MySQL CDR logger originally by James Sharp
   8  *
   9  * Modified September 2003
  10  * Matthew D. Hardeman <mhardemn@papersoft.com>
  11  *
  12  * See http://www.asterisk.org for more information about
  13  * the Asterisk project. Please do not directly contact
  14  * any of the maintainers of this project for assistance;
  15  * the project provides a web site, mailing lists and IRC
  16  * channels for your use.
  17  *
  18  * This program is free software, distributed under the terms of
  19  * the GNU General Public License Version 2. See the LICENSE file
  20  * at the top of the source tree.
  21  */
  22
  23 /*! \file
  24  *
  25  * \brief PostgreSQL CDR logger
  26  *
  27  * \author Matthew D. Hardeman <mhardemn@papersoft.com>
  28  * \extref PostgreSQL http://www.postgresql.org/
  29  *
  30  * See also
  31  * \arg \ref Config_cdr
  32  * \arg http://www.postgresql.org/
  33  * \ingroup cdr_drivers
  34  */
  35
  36 /*** MODULEINFO
  37         <depend>pgsql</depend>
  38  ***/
  39
  40 #include "asterisk.h"
  41
  42 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  43
  44 #include <time.h>
  45
  46 #include <libpq-fe.h>
  47
  48 #include "asterisk/config.h"
  49 #include "asterisk/channel.h"
  50 #include "asterisk/cdr.h"
  51 #include "asterisk/module.h"
  52
  53 #define DATE_FORMAT "'%Y-%m-%d %T'"
  54
  55 static char *name = "pgsql";
  56 static char *config = "cdr_pgsql.conf";
  57 static char *pghostname = NULL, *pgdbname = NULL, *pgdbuser = NULL, *pgpassword = NULL, *pgdbport = NULL, *table = NULL;
  58 static int connected = 0;
  59 static int maxsize = 512, maxsize2 = 512;
  60
  61 AST_MUTEX_DEFINE_STATIC(pgsql_lock);
  62
  63 static PGconn   *conn = NULL;
  64
  65 struct columns {
  66         char *name;
  67         char *type;
  68         int len;
  69         AST_RWLIST_ENTRY(columns) list;
  70 };
  71
  72 static AST_RWLIST_HEAD_STATIC(psql_columns, columns);
  73
  74 #define LENGTHEN_BUF1(size)                                                                                                             \
  75                         do {                                                                                                                            \
  76                                 /* Lengthen buffer, if necessary */                                                             \
  77                                 if ((newsize = lensql + (size) + 3) > sizesql) {        \
  78                                         if ((tmp = ast_realloc(sql, (newsize / 512 + 1) * 512))) {      \
  79                                                 sql = tmp;                                                                                              \
  80                                                 sizesql = (newsize / 512 + 1) * 512;                                    \
  81                                         } else {                                                                                                        \
  82                                                 ast_log(LOG_ERROR, "Unable to allocate sufficient memory.  Insert CDR failed.\n"); \
  83                                                 ast_free(sql);                                                                                  \
  84                                                 ast_free(sql2);                                                                                 \
  85                                                 AST_RWLIST_UNLOCK(&psql_columns);                                               \
  86                                                 return -1;                                                                                              \
  87                                         }                                                                                                                       \
  88                                 }                                                                                                                               \
  89                         } while (0)
  90
  91 #define LENGTHEN_BUF2(size)                                                                                                             \
  92                         do {                                                                                                                            \
  93                                 if ((newsize = lensql2 + (size) + 3) > sizesql2) {                              \
  94                                         if ((tmp = ast_realloc(sql2, (newsize / 512 + 1) * 512))) {     \
  95                                                 sql2 = tmp;                                                                                             \
  96                                                 sizesql2 = (newsize / 512 + 1) * 512;                                   \
  97                                         } else {                                                                                                        \
  98                                                 ast_log(LOG_ERROR, "Unable to allocate sufficient memory.  Insert CDR failed.\n");      \
  99                                                 ast_free(sql);                                                                                  \
 100                                                 ast_free(sql2);                                                                                 \
 101                                                 AST_RWLIST_UNLOCK(&psql_columns);                                               \
 102                                                 return -1;                                                                                              \
 103                                         }                                                                                                                       \
 104                                 }                                                                                                                               \
 105                         } while (0)
 106
 107 static int pgsql_log(struct ast_cdr *cdr)
 108 {
 109         struct ast_tm tm;
 110         char *pgerror;
 111         PGresult *result;
 112
 113         ast_mutex_lock(&pgsql_lock);
 114
 115         if ((!connected) && pghostname && pgdbuser && pgpassword && pgdbname) {
 116                 conn = PQsetdbLogin(pghostname, pgdbport, NULL, NULL, pgdbname, pgdbuser, pgpassword);
 117                 if (PQstatus(conn) != CONNECTION_BAD) {
 118                         connected = 1;
 119                 } else {
 120                         pgerror = PQerrorMessage(conn);
 121                         ast_log(LOG_ERROR, "cdr_pgsql: Unable to connect to database server %s.  Calls will not be logged!\n", pghostname);
 122                         ast_log(LOG_ERROR, "cdr_pgsql: Reason: %s\n", pgerror);
 123                         PQfinish(conn);
 124                         conn = NULL;
 125                 }
 126         }
 127
 128         if (connected) {
 129                 struct columns *cur;
 130                 int lensql, lensql2, sizesql = maxsize, sizesql2 = maxsize2, newsize;
 131                 char *sql = ast_calloc(sizeof(char), sizesql), *sql2 = ast_calloc(sizeof(char), sizesql2), *tmp, *value;
 132                 char buf[257], escapebuf[513];
 133
 134                 lensql = snprintf(sql, sizesql, "INSERT INTO %s (", table);
 135                 lensql2 = snprintf(sql2, sizesql2, " VALUES (");
 136
 137                 AST_RWLIST_RDLOCK(&psql_columns);
 138                 AST_RWLIST_TRAVERSE(&psql_columns, cur, list) {
 139                         /* For fields not set, simply skip them */
 140                         ast_cdr_getvar(cdr, cur->name, &value, buf, sizeof(buf), 0, 0);
 141                         if (!value)
 142                                 continue;
 143
 144                         LENGTHEN_BUF1(strlen(cur->name));
 145                         lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", cur->name);
 146
 147                         if (strcmp(cur->name, "start") == 0 || strcmp(cur->name, "calldate") == 0) {
 148                                 if (strncmp(cur->type, "int", 3) == 0) {
 149                                         LENGTHEN_BUF2(12);
 150                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%ld", cdr->start.tv_sec);
 151                                 } else if (strncmp(cur->type, "float", 5) == 0) {
 152                                         LENGTHEN_BUF2(30);
 153                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%f", (double)cdr->start.tv_sec + (double)cdr->start.tv_usec / 1000000.0);
 154                                 } else {
 155                                         /* char, hopefully */
 156                                         LENGTHEN_BUF2(30);
 157                                         ast_localtime(&cdr->start, &tm, NULL);
 158                                         lensql2 += ast_strftime(sql2 + lensql2, sizesql2 - lensql2, DATE_FORMAT, &tm);
 159                                 }
 160                         } else if (strcmp(cur->name, "answer") == 0) {
 161                                 if (strncmp(cur->type, "int", 3) == 0) {
 162                                         LENGTHEN_BUF2(12);
 163                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%ld", cdr->answer.tv_sec);
 164                                 } else if (strncmp(cur->type, "float", 5) == 0) {
 165                                         LENGTHEN_BUF2(30);
 166                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%f", (double)cdr->answer.tv_sec + (double)cdr->answer.tv_usec / 1000000.0);
 167                                 } else {
 168                                         /* char, hopefully */
 169                                         LENGTHEN_BUF2(30);
 170                                         ast_localtime(&cdr->start, &tm, NULL);
 171                                         lensql2 += ast_strftime(sql2 + lensql2, sizesql2 - lensql2, DATE_FORMAT, &tm);
 172                                 }
 173                         } else if (strcmp(cur->name, "end") == 0) {
 174                                 if (strncmp(cur->type, "int", 3) == 0) {
 175                                         LENGTHEN_BUF2(12);
 176                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%ld", cdr->end.tv_sec);
 177                                 } else if (strncmp(cur->type, "float", 5) == 0) {
 178                                         LENGTHEN_BUF2(30);
 179                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%f", (double)cdr->end.tv_sec + (double)cdr->end.tv_usec / 1000000.0);
 180                                 } else {
 181                                         /* char, hopefully */
 182                                         LENGTHEN_BUF2(30);
 183                                         ast_localtime(&cdr->end, &tm, NULL);
 184                                         lensql2 += ast_strftime(sql2 + lensql2, sizesql2 - lensql2, DATE_FORMAT, &tm);
 185                                 }
 186                         } else if (strcmp(cur->name, "duration") == 0 || strcmp(cur->name, "billsec") == 0) {
 187                                 if (cur->type[0] == 'i') {
 188                                         /* Get integer, no need to escape anything */
 189                                         ast_cdr_getvar(cdr, cur->name, &value, buf, sizeof(buf), 0, 0);
 190                                         LENGTHEN_BUF2(12);
 191                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%s", value);
 192                                 } else if (strncmp(cur->type, "float", 5) == 0) {
 193                                         struct timeval *tv = cur->name[0] == 'd' ? &cdr->start : &cdr->answer;
 194                                         LENGTHEN_BUF2(30);
 195                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%f", (double)cdr->end.tv_sec - tv->tv_sec + cdr->end.tv_usec / 1000000.0 - tv->tv_usec / 1000000.0);
 196                                 } else {
 197                                         /* Char field, probably */
 198                                         struct timeval *tv = cur->name[0] == 'd' ? &cdr->start : &cdr->answer;
 199                                         LENGTHEN_BUF2(30);
 200                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%f'", (double)cdr->end.tv_sec - tv->tv_sec + cdr->end.tv_usec / 1000000.0 - tv->tv_usec / 1000000.0);
 201                                 }
 202                         } else if (strcmp(cur->name, "disposition") == 0 || strcmp(cur->name, "amaflags") == 0) {
 203                                 if (strncmp(cur->type, "int", 3) == 0) {
 204                                         /* Integer, no need to escape anything */
 205                                         ast_cdr_getvar(cdr, cur->name, &value, buf, sizeof(buf), 0, 1);
 206                                         LENGTHEN_BUF2(12);
 207                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%s", value);
 208                                 } else {
 209                                         /* Although this is a char field, there are no special characters in the values for these fields */
 210                                         ast_cdr_getvar(cdr, cur->name, &value, buf, sizeof(buf), 0, 0);
 211                                         LENGTHEN_BUF2(30);
 212                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%s'", value);
 213                                 }
 214                         } else {
 215                                 /* Arbitrary field, could be anything */
 216                                 ast_cdr_getvar(cdr, cur->name, &value, buf, sizeof(buf), 0, 0);
 217                                 if (strncmp(cur->type, "int", 3) == 0) {
 218                                         long long whatever;
 219                                         if (value && sscanf(value, "%lld", &whatever) == 1) {
 220                                                 LENGTHEN_BUF2(25);
 221                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%lld", whatever);
 222                                         } else {
 223                                                 LENGTHEN_BUF2(1);
 224                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "0");
 225                                         }
 226                                 } else if (strncmp(cur->type, "float", 5) == 0) {
 227                                         long double whatever;
 228                                         if (value && sscanf(value, "%Lf", &whatever) == 1) {
 229                                                 LENGTHEN_BUF2(50);
 230                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%30Lf", whatever);
 231                                         } else {
 232                                                 LENGTHEN_BUF2(1);
 233                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "0");
 234                                         }
 235                                 /* XXX Might want to handle dates, times, and other misc fields here XXX */
 236                                 } else {
 237                                         if (value)
 238                                                 PQescapeStringConn(conn, escapebuf, value, strlen(value), NULL);
 239                                         else
 240                                                 escapebuf[0] = '\0';
 241                                         LENGTHEN_BUF2(strlen(escapebuf) + 2);
 242                                         lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%s'", escapebuf);
 243                                 }
 244                         }
 245                         LENGTHEN_BUF2(1);
 246                         strcat(sql2 + lensql2, ",");
 247                         lensql2++;
 248                 }
 249                 AST_RWLIST_UNLOCK(&psql_columns);
 250                 LENGTHEN_BUF1(lensql2);
 251                 sql[lensql - 1] = ')';
 252                 sql2[lensql2 - 1] = ')';
 253                 strcat(sql + lensql, sql2);
 254                 ast_verb(11, "[%s]\n", sql);
 255
 256                 ast_debug(2, "cdr_pgsql: inserting a CDR record.\n");
 257
 258                 /* Test to be sure we're still connected... */
 259                 /* If we're connected, and connection is working, good. */
 260                 /* Otherwise, attempt reconnect.  If it fails... sorry... */
 261                 if (PQstatus(conn) == CONNECTION_OK) {
 262                         connected = 1;
 263                 } else {
 264                         ast_log(LOG_ERROR, "cdr_pgsql: Connection was lost... attempting to reconnect.\n");
 265                         PQreset(conn);
 266                         if (PQstatus(conn) == CONNECTION_OK) {
 267                                 ast_log(LOG_ERROR, "cdr_pgsql: Connection reestablished.\n");
 268                                 connected = 1;
 269                         } else {
 270                                 pgerror = PQerrorMessage(conn);
 271                                 ast_log(LOG_ERROR, "cdr_pgsql: Unable to reconnect to database server %s. Calls will not be logged!\n", pghostname);
 272                                 ast_log(LOG_ERROR, "cdr_pgsql: Reason: %s\n", pgerror);
 273                                 PQfinish(conn);
 274                                 conn = NULL;
 275                                 connected = 0;
 276                                 ast_mutex_unlock(&pgsql_lock);
 277                                 return -1;
 278                         }
 279                 }
 280                 result = PQexec(conn, sql);
 281                 if (PQresultStatus(result) != PGRES_COMMAND_OK) {
 282                         pgerror = PQresultErrorMessage(result);
 283                         ast_log(LOG_ERROR,"cdr_pgsql: Failed to insert call detail record into database!\n");
 284                         ast_log(LOG_ERROR,"cdr_pgsql: Reason: %s\n", pgerror);
 285                         ast_log(LOG_ERROR,"cdr_pgsql: Connection may have been lost... attempting to reconnect.\n");
 286                         PQreset(conn);
 287                         if (PQstatus(conn) == CONNECTION_OK) {
 288                                 ast_log(LOG_ERROR, "cdr_pgsql: Connection reestablished.\n");
 289                                 connected = 1;
 290                                 PQclear(result);
 291                                 result = PQexec(conn, sql);
 292                                 if (PQresultStatus(result) != PGRES_COMMAND_OK) {
 293                                         pgerror = PQresultErrorMessage(result);
 294                                         ast_log(LOG_ERROR,"cdr_pgsql: HARD ERROR!  Attempted reconnection failed.  DROPPING CALL RECORD!\n");
 295                                         ast_log(LOG_ERROR,"cdr_pgsql: Reason: %s\n", pgerror);
 296                                 }
 297                         }
 298                         ast_mutex_unlock(&pgsql_lock);
 299                         PQclear(result);
 300                         return -1;
 301                 }
 302                 PQclear(result);
 303         }
 304         ast_mutex_unlock(&pgsql_lock);
 305         return 0;
 306 }
 307
 308 static int unload_module(void)
 309 {
 310         struct columns *cur;
 311         ast_cdr_unregister(name);
 312
 313         /* Give all threads time to finish */
 314         usleep(1);
 315         PQfinish(conn);
 316
 317         if (pghostname)
 318                 ast_free(pghostname);
 319         if (pgdbname)
 320                 ast_free(pgdbname);
 321         if (pgdbuser)
 322                 ast_free(pgdbuser);
 323         if (pgpassword)
 324                 ast_free(pgpassword);
 325         if (pgdbport)
 326                 ast_free(pgdbport);
 327         if (table)
 328                 ast_free(table);
 329
 330         AST_RWLIST_WRLOCK(&psql_columns);
 331         while ((cur = AST_RWLIST_REMOVE_HEAD(&psql_columns, list))) {
 332                 ast_free(cur);
 333         }
 334         AST_RWLIST_UNLOCK(&psql_columns);
 335
 336         return 0;
 337 }
 338
 339 static int config_module(int reload)
 340 {
 341         struct ast_variable *var;
 342         char *pgerror;
 343         struct columns *cur;
 344         PGresult *result;
 345         const char *tmp;
 346         struct ast_config *cfg;
 347         struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
 348
 349         if ((cfg = ast_config_load(config, config_flags)) == NULL) {
 350                 ast_log(LOG_WARNING, "Unable to load config for PostgreSQL CDR's: %s\n", config);
 351                 return -1;
 352         } else if (cfg == CONFIG_STATUS_FILEUNCHANGED)
 353                 return 0;
 354
 355         if (!(var = ast_variable_browse(cfg, "global"))) {
 356                 ast_config_destroy(cfg);
 357                 return 0;
 358         }
 359
 360         if (!(tmp = ast_variable_retrieve(cfg, "global", "hostname"))) {
 361                 ast_log(LOG_WARNING, "PostgreSQL server hostname not specified.  Assuming unix socket connection\n");
 362                 tmp = "";       /* connect via UNIX-socket by default */
 363         }
 364
 365         if (pghostname)
 366                 ast_free(pghostname);
 367         if (!(pghostname = ast_strdup(tmp))) {
 368                 ast_config_destroy(cfg);
 369                 return -1;
 370         }
 371
 372         if (!(tmp = ast_variable_retrieve(cfg, "global", "dbname"))) {
 373                 ast_log(LOG_WARNING,"PostgreSQL database not specified.  Assuming asterisk\n");
 374                 tmp = "asteriskcdrdb";
 375         }
 376
 377         if (pgdbname)
 378                 ast_free(pgdbname);
 379         if (!(pgdbname = ast_strdup(tmp))) {
 380                 ast_config_destroy(cfg);
 381                 return -1;
 382         }
 383
 384         if (!(tmp = ast_variable_retrieve(cfg, "global", "user"))) {
 385                 ast_log(LOG_WARNING,"PostgreSQL database user not specified.  Assuming asterisk\n");
 386                 tmp = "asterisk";
 387         }
 388
 389         if (pgdbuser)
 390                 ast_free(pgdbuser);
 391         if (!(pgdbuser = ast_strdup(tmp))) {
 392                 ast_config_destroy(cfg);
 393                 return -1;
 394         }
 395
 396         if (!(tmp = ast_variable_retrieve(cfg, "global", "password"))) {
 397                 ast_log(LOG_WARNING,"PostgreSQL database password not specified.  Assuming blank\n");
 398                 tmp = "";
 399         }
 400
 401         if (pgpassword)
 402                 ast_free(pgpassword);
 403         if (!(pgpassword = ast_strdup(tmp))) {
 404                 ast_config_destroy(cfg);
 405                 return -1;
 406         }
 407
 408         if (!(tmp = ast_variable_retrieve(cfg,"global","port"))) {
 409                 ast_log(LOG_WARNING,"PostgreSQL database port not specified.  Using default 5432.\n");
 410                 tmp = "5432";
 411         }
 412
 413         if (pgdbport)
 414                 ast_free(pgdbport);
 415         if (!(pgdbport = ast_strdup(tmp))) {
 416                 ast_config_destroy(cfg);
 417                 return -1;
 418         }
 419
 420         if (!(tmp = ast_variable_retrieve(cfg, "global", "table"))) {
 421                 ast_log(LOG_WARNING,"CDR table not specified.  Assuming cdr\n");
 422                 tmp = "cdr";
 423         }
 424
 425         if (table)
 426                 ast_free(table);
 427         if (!(table = ast_strdup(tmp))) {
 428                 ast_config_destroy(cfg);
 429                 return -1;
 430         }
 431
 432         if (option_debug) {
 433                 if (ast_strlen_zero(pghostname))
 434                         ast_debug(1, "cdr_pgsql: using default unix socket\n");
 435                 else
 436                         ast_debug(1, "cdr_pgsql: got hostname of %s\n", pghostname);
 437                         ast_debug(1, "cdr_pgsql: got port of %s\n", pgdbport);
 438                         ast_debug(1, "cdr_pgsql: got user of %s\n", pgdbuser);
 439                         ast_debug(1, "cdr_pgsql: got dbname of %s\n", pgdbname);
 440                         ast_debug(1, "cdr_pgsql: got password of %s\n", pgpassword);
 441                         ast_debug(1, "cdr_pgsql: got sql table name of %s\n", table);
 442         }
 443
 444         conn = PQsetdbLogin(pghostname, pgdbport, NULL, NULL, pgdbname, pgdbuser, pgpassword);
 445         if (PQstatus(conn) != CONNECTION_BAD) {
 446                 char sqlcmd[256];
 447                 char *fname, *ftype, *flen;
 448                 int i, rows;
 449                 ast_debug(1, "Successfully connected to PostgreSQL database.\n");
 450                 connected = 1;
 451
 452                 /* Query the columns */
 453                 snprintf(sqlcmd, sizeof(sqlcmd), "select a.attname, t.typname, a.attlen from pg_class c, pg_attribute a, pg_type t where c.oid = a.attrelid and a.atttypid = t.oid and (a.attnum > 0) and c.relname = '%s' order by c.relname, attnum", table);
 454                 result = PQexec(conn, sqlcmd);
 455                 if (PQresultStatus(result) != PGRES_TUPLES_OK) {
 456                         pgerror = PQresultErrorMessage(result);
 457                         ast_log(LOG_ERROR, "cdr_pgsql: Failed to query database columns: %s\n", pgerror);
 458                         PQclear(result);
 459                         unload_module();
 460                         return AST_MODULE_LOAD_DECLINE;
 461                 }
 462
 463                 rows = PQntuples(result);
 464                 for (i = 0; i < rows; i++) {
 465                         fname = PQgetvalue(result, i, 0);
 466                         ftype = PQgetvalue(result, i, 1);
 467                         flen = PQgetvalue(result, i, 2);
 468                         ast_verb(4, "Found column '%s' of type '%s'\n", fname, ftype);
 469                         cur = ast_calloc(1, sizeof(*cur) + strlen(fname) + strlen(ftype) + 2);
 470                         if (cur) {
 471                                 sscanf(flen, "%d", &cur->len);
 472                                 cur->name = (char *)cur + sizeof(*cur);
 473                                 cur->type = (char *)cur + sizeof(*cur) + strlen(fname) + 1;
 474                                 strcpy(cur->name, fname);
 475                                 strcpy(cur->type, ftype);
 476                                 AST_RWLIST_INSERT_TAIL(&psql_columns, cur, list);
 477                         }
 478                 }
 479                 PQclear(result);
 480         } else {
 481                 pgerror = PQerrorMessage(conn);
 482                 ast_log(LOG_ERROR, "cdr_pgsql: Unable to connect to database server %s.  CALLS WILL NOT BE LOGGED!!\n", pghostname);
 483                 ast_log(LOG_ERROR, "cdr_pgsql: Reason: %s\n", pgerror);
 484                 connected = 0;
 485         }
 486
 487         ast_config_destroy(cfg);
 488
 489         return ast_cdr_register(name, ast_module_info->description, pgsql_log);
 490 }
 491
 492 static int load_module(void)
 493 {
 494         return config_module(0) ? AST_MODULE_LOAD_DECLINE : 0;
 495 }
 496
 497 static int reload(void)
 498 {
 499         return config_module(1);
 500 }
 501
 502 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "PostgreSQL CDR Backend",
 503                 .load = load_module,
 504                 .unload = unload_module,
 505                 .reload = reload,
 506                );