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asterisk/cel/cel_pgsql.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2008
*
* Steve Murphy - adapted to CEL, from:
* Matthew D. Hardeman <mhardemn@papersoft.com>
* Adapted from the MySQL CDR logger originally by James Sharp
*
* Modified April, 2007; Dec, 2008
* Steve Murphy <murf@digium.com>
* Modified September 2003
* Matthew D. Hardeman <mhardemn@papersoft.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief PostgreSQL CEL logger
*
* \author Steve Murphy <murf@digium.com>
* PostgreSQL http://www.postgresql.org/
* \ingroup cel_drivers
*/
/*** MODULEINFO
<depend>pgsql</depend>
<support_level>extended</support_level>
***/
#include "asterisk.h"
#include <libpq-fe.h>
#include "asterisk/config.h"
#include "asterisk/options.h"
#include "asterisk/channel.h"
#include "asterisk/cel.h"
#include "asterisk/module.h"
#include "asterisk/logger.h"
#include "asterisk.h"
#define DATE_FORMAT "%Y-%m-%d %T.%6q"
#define PGSQL_BACKEND_NAME "CEL PGSQL backend"
#define PGSQL_MIN_VERSION_SCHEMA 70300
static char *config = "cel_pgsql.conf";
static char *pghostname;
static char *pgdbname;
static char *pgdbuser;
static char *pgpassword;
static char *pgappname;
static char *pgdbport;
static char *table;
static char *schema;
static int connected = 0;
/* Optimization to reduce number of memory allocations */
static int maxsize = 512, maxsize2 = 512;
static int usegmtime = 0;
/*! \brief show_user_def is off by default */
#define CEL_SHOW_USERDEF_DEFAULT 0
/*! TRUE if we should set the eventtype field to USER_DEFINED on user events. */
static unsigned char cel_show_user_def;
AST_MUTEX_DEFINE_STATIC(pgsql_lock);
static PGconn *conn = NULL;
static PGresult *result = NULL;
struct columns {
char *name;
char *type;
int len;
unsigned int notnull:1;
unsigned int hasdefault:1;
AST_RWLIST_ENTRY(columns) list;
};
static AST_RWLIST_HEAD_STATIC(psql_columns, columns);
#define LENGTHEN_BUF(size, var_sql) \
do { \
/* Lengthen buffer, if necessary */ \
if (ast_str_strlen(var_sql) + size + 1 > ast_str_size(var_sql)) { \
if (ast_str_make_space(&var_sql, ((ast_str_size(var_sql) + size + 3) / 512 + 1) * 512) != 0) { \
ast_log(LOG_ERROR, "Unable to allocate sufficient memory. Insert CEL '%s:%s' failed.\n", pghostname, table); \
ast_free(sql); \
ast_free(sql2); \
AST_RWLIST_UNLOCK(&psql_columns); \
return; \
} \
} \
} while (0)
#define LENGTHEN_BUF1(size) \
LENGTHEN_BUF(size, sql);
#define LENGTHEN_BUF2(size) \
LENGTHEN_BUF(size, sql2);
static void pgsql_reconnect(void)
{
struct ast_str *conn_info = ast_str_create(128);
if (!conn_info) {
ast_log(LOG_ERROR, "Failed to allocate memory for connection string.\n");
return;
}
if (conn) {
PQfinish(conn);
conn = NULL;
}
ast_str_set(&conn_info, 0, "host=%s port=%s dbname=%s user=%s",
pghostname, pgdbport, pgdbname, pgdbuser);
if (!ast_strlen_zero(pgappname)) {
ast_str_append(&conn_info, 0, " application_name=%s", pgappname);
}
if (!ast_strlen_zero(pgpassword)) {
ast_str_append(&conn_info, 0, " password=%s", pgpassword);
}
conn = PQconnectdb(ast_str_buffer(conn_info));
ast_free(conn_info);
}
static void pgsql_log(struct ast_event *event)
{
struct ast_tm tm;
char timestr[128];
char *pgerror;
struct ast_cel_event_record record = {
.version = AST_CEL_EVENT_RECORD_VERSION,
};
if (ast_cel_fill_record(event, &record)) {
return;
}
ast_mutex_lock(&pgsql_lock);
ast_localtime(&record.event_time, &tm, usegmtime ? "GMT" : NULL);
ast_strftime(timestr, sizeof(timestr), DATE_FORMAT, &tm);
if ((!connected) && pghostname && pgdbuser && pgpassword && pgdbname) {
pgsql_reconnect();
if (PQstatus(conn) != CONNECTION_BAD) {
connected = 1;
} else {
pgerror = PQerrorMessage(conn);
ast_log(LOG_ERROR, "cel_pgsql: Unable to connect to database server %s. Calls will not be logged!\n", pghostname);
ast_log(LOG_ERROR, "cel_pgsql: Reason: %s\n", pgerror);
PQfinish(conn);
conn = NULL;
}
}
if (connected) {
struct columns *cur;
struct ast_str *sql = ast_str_create(maxsize), *sql2 = ast_str_create(maxsize2);
char buf[257];
char *escapebuf = NULL;
const char *value;
int first = 1;
size_t bufsize = 513;
escapebuf = ast_malloc(bufsize);
if (!escapebuf || !sql || !sql2) {
goto ast_log_cleanup;
}
ast_str_set(&sql, 0, "INSERT INTO %s (", table);
ast_str_set(&sql2, 0, " VALUES (");
#define SEP (first ? "" : ",")
AST_RWLIST_RDLOCK(&psql_columns);
AST_RWLIST_TRAVERSE(&psql_columns, cur, list) {
LENGTHEN_BUF1(strlen(cur->name) + 2);
ast_str_append(&sql, 0, "%s\"%s\"", SEP, cur->name);
if (strcmp(cur->name, "eventtime") == 0) {
if (strncmp(cur->type, "int", 3) == 0) {
LENGTHEN_BUF2(13);
ast_str_append(&sql2, 0, "%s%ld", SEP, (long) record.event_time.tv_sec);
} else if (strncmp(cur->type, "float", 5) == 0) {
LENGTHEN_BUF2(31);
ast_str_append(&sql2, 0, "%s%f",
SEP,
(double) record.event_time.tv_sec +
(double) record.event_time.tv_usec / 1000000.0);
} else {
/* char, hopefully */
LENGTHEN_BUF2(31);
ast_localtime(&record.event_time, &tm, usegmtime ? "GMT" : NULL);
ast_strftime(buf, sizeof(buf), DATE_FORMAT, &tm);
ast_str_append(&sql2, 0, "%s'%s'", SEP, buf);
}
} else if (strcmp(cur->name, "eventtype") == 0) {
if (cur->type[0] == 'i') {
/* Get integer, no need to escape anything */
LENGTHEN_BUF2(5);
ast_str_append(&sql2, 0, "%s%d", SEP, (int) record.event_type);
} else if (strncmp(cur->type, "float", 5) == 0) {
LENGTHEN_BUF2(31);
ast_str_append(&sql2, 0, "%s%f", SEP, (double) record.event_type);
} else {
/* Char field, probably */
const char *event_name;
event_name = (!cel_show_user_def
&& record.event_type == AST_CEL_USER_DEFINED)
? record.user_defined_name : record.event_name;
LENGTHEN_BUF2(strlen(event_name) + 1);
ast_str_append(&sql2, 0, "%s'%s'", SEP, event_name);
}
} else if (strcmp(cur->name, "amaflags") == 0) {
if (strncmp(cur->type, "int", 3) == 0) {
/* Integer, no need to escape anything */
LENGTHEN_BUF2(13);
ast_str_append(&sql2, 0, "%s%u", SEP, record.amaflag);
} else {
/* Although this is a char field, there are no special characters in the values for these fields */
LENGTHEN_BUF2(31);
ast_str_append(&sql2, 0, "%s'%u'", SEP, record.amaflag);
}
} else {
/* Arbitrary field, could be anything */
if (strcmp(cur->name, "userdeftype") == 0) {
value = record.user_defined_name;
} else if (strcmp(cur->name, "cid_name") == 0) {
value = record.caller_id_name;
} else if (strcmp(cur->name, "cid_num") == 0) {
value = record.caller_id_num;
} else if (strcmp(cur->name, "cid_ani") == 0) {
value = record.caller_id_ani;
} else if (strcmp(cur->name, "cid_rdnis") == 0) {
value = record.caller_id_rdnis;
} else if (strcmp(cur->name, "cid_dnid") == 0) {
value = record.caller_id_dnid;
} else if (strcmp(cur->name, "exten") == 0) {
value = record.extension;
} else if (strcmp(cur->name, "context") == 0) {
value = record.context;
} else if (strcmp(cur->name, "channame") == 0) {
value = record.channel_name;
} else if (strcmp(cur->name, "appname") == 0) {
value = record.application_name;
} else if (strcmp(cur->name, "appdata") == 0) {
value = record.application_data;
} else if (strcmp(cur->name, "accountcode") == 0) {
value = record.account_code;
} else if (strcmp(cur->name, "peeraccount") == 0) {
value = record.peer_account;
} else if (strcmp(cur->name, "uniqueid") == 0) {
value = record.unique_id;
} else if (strcmp(cur->name, "linkedid") == 0) {
value = record.linked_id;
} else if (strcmp(cur->name, "userfield") == 0) {
value = record.user_field;
} else if (strcmp(cur->name, "peer") == 0) {
value = record.peer;
} else if (strcmp(cur->name, "extra") == 0) {
value = record.extra;
} else {
value = NULL;
}
if (value == NULL) {
ast_str_append(&sql2, 0, "%sDEFAULT", SEP);
} else if (strncmp(cur->type, "int", 3) == 0) {
long long whatever;
if (value && sscanf(value, "%30lld", &whatever) == 1) {
LENGTHEN_BUF2(26);
ast_str_append(&sql2, 0, "%s%lld", SEP, whatever);
} else {
LENGTHEN_BUF2(2);
ast_str_append(&sql2, 0, "%s0", SEP);
}
} else if (strncmp(cur->type, "float", 5) == 0) {
long double whatever;
if (value && sscanf(value, "%30Lf", &whatever) == 1) {
LENGTHEN_BUF2(51);
ast_str_append(&sql2, 0, "%s%30Lf", SEP, whatever);
} else {
LENGTHEN_BUF2(2);
ast_str_append(&sql2, 0, "%s0", SEP);
}
/* XXX Might want to handle dates, times, and other misc fields here XXX */
} else {
if (value) {
size_t required_size = strlen(value) * 2 + 1;
/* If our argument size exceeds our buffer, grow it,
* as PQescapeStringConn() expects the buffer to be
* adequitely sized and does *NOT* do size checking.
*/
if (required_size > bufsize) {
char *tmpbuf = ast_realloc(escapebuf, required_size);
if (!tmpbuf) {
AST_RWLIST_UNLOCK(&psql_columns);
goto ast_log_cleanup;
}
escapebuf = tmpbuf;
bufsize = required_size;
}
PQescapeStringConn(conn, escapebuf, value, strlen(value), NULL);
} else {
escapebuf[0] = '\0';
}
LENGTHEN_BUF2(strlen(escapebuf) + 3);
ast_str_append(&sql2, 0, "%s'%s'", SEP, escapebuf);
}
}
first = 0;
}
AST_RWLIST_UNLOCK(&psql_columns);
LENGTHEN_BUF1(ast_str_strlen(sql2) + 2);
ast_str_append(&sql, 0, ")%s)", ast_str_buffer(sql2));
ast_debug(3, "Inserting a CEL record: [%s].\n", ast_str_buffer(sql));
/* Test to be sure we're still connected... */
/* If we're connected, and connection is working, good. */
/* Otherwise, attempt reconnect. If it fails... sorry... */
if (PQstatus(conn) == CONNECTION_OK) {
connected = 1;
} else {
ast_log(LOG_WARNING, "Connection was lost... attempting to reconnect.\n");
PQreset(conn);
if (PQstatus(conn) == CONNECTION_OK) {
ast_log(LOG_NOTICE, "Connection reestablished.\n");
connected = 1;
} else {
pgerror = PQerrorMessage(conn);
ast_log(LOG_ERROR, "Unable to reconnect to database server %s. Calls will not be logged!\n", pghostname);
ast_log(LOG_ERROR, "Reason: %s\n", pgerror);
PQfinish(conn);
conn = NULL;
connected = 0;
goto ast_log_cleanup;
}
}
result = PQexec(conn, ast_str_buffer(sql));
if (PQresultStatus(result) != PGRES_COMMAND_OK) {
pgerror = PQresultErrorMessage(result);
ast_log(LOG_WARNING, "Failed to insert call detail record into database!\n");
ast_log(LOG_WARNING, "Reason: %s\n", pgerror);
ast_log(LOG_WARNING, "Connection may have been lost... attempting to reconnect.\n");
PQreset(conn);
if (PQstatus(conn) == CONNECTION_OK) {
ast_log(LOG_NOTICE, "Connection reestablished.\n");
connected = 1;
PQclear(result);
result = PQexec(conn, ast_str_buffer(sql));
if (PQresultStatus(result) != PGRES_COMMAND_OK) {
pgerror = PQresultErrorMessage(result);
ast_log(LOG_ERROR, "HARD ERROR! Attempted reconnection failed. DROPPING CALL RECORD!\n");
ast_log(LOG_ERROR, "Reason: %s\n", pgerror);
}
}
}
PQclear(result);
/* Next time, just allocate buffers that are that big to start with. */
if (ast_str_strlen(sql) > maxsize) {
maxsize = ast_str_strlen(sql);
}
if (ast_str_strlen(sql2) > maxsize2) {
maxsize2 = ast_str_strlen(sql2);
}
ast_log_cleanup:
ast_free(sql);
ast_free(sql2);
ast_free(escapebuf);
}
ast_mutex_unlock(&pgsql_lock);
}
static int my_unload_module(void)
{
struct columns *current;
ast_cel_backend_unregister(PGSQL_BACKEND_NAME);
AST_RWLIST_WRLOCK(&psql_columns);
if (conn) {
PQfinish(conn);
conn = NULL;
}
if (pghostname) {
ast_free(pghostname);
pghostname = NULL;
}
if (pgdbname) {
ast_free(pgdbname);
pgdbname = NULL;
}
if (pgdbuser) {
ast_free(pgdbuser);
pgdbuser = NULL;
}
if (pgpassword) {
ast_free(pgpassword);
pgpassword = NULL;
}
if (pgappname) {
ast_free(pgappname);
pgappname = NULL;
}
if (pgdbport) {
ast_free(pgdbport);
pgdbport = NULL;
}
if (table) {
ast_free(table);
table = NULL;
}
if (schema) {
ast_free(schema);
schema = NULL;
}
while ((current = AST_RWLIST_REMOVE_HEAD(&psql_columns, list))) {
ast_free(current);
}
AST_RWLIST_UNLOCK(&psql_columns);
return 0;
}
static int unload_module(void)
{
return my_unload_module();
}
static int process_my_load_module(struct ast_config *cfg)
{
struct ast_variable *var;
char *pgerror;
const char *tmp;
PGresult *result;
struct columns *cur;
if (!(var = ast_variable_browse(cfg, "global"))) {
ast_log(LOG_WARNING,"CEL pgsql config file missing global section.\n");
return AST_MODULE_LOAD_DECLINE;
}
if (!(tmp = ast_variable_retrieve(cfg,"global","hostname"))) {
ast_log(LOG_WARNING,"PostgreSQL server hostname not specified. Assuming unix socket connection\n");
tmp = ""; /* connect via UNIX-socket by default */
}
if (pghostname)
ast_free(pghostname);
if (!(pghostname = ast_strdup(tmp))) {
ast_log(LOG_WARNING,"PostgreSQL Ran out of memory copying host info\n");
return AST_MODULE_LOAD_DECLINE;
}
if (!(tmp = ast_variable_retrieve(cfg, "global", "dbname"))) {
ast_log(LOG_WARNING,"PostgreSQL database not specified. Assuming asterisk\n");
tmp = "asteriskceldb";
}
if (pgdbname)
ast_free(pgdbname);
if (!(pgdbname = ast_strdup(tmp))) {
ast_log(LOG_WARNING,"PostgreSQL Ran out of memory copying dbname info\n");
return AST_MODULE_LOAD_DECLINE;
}
if (!(tmp = ast_variable_retrieve(cfg, "global", "user"))) {
ast_log(LOG_WARNING,"PostgreSQL database user not specified. Assuming asterisk\n");
tmp = "asterisk";
}
if (pgdbuser)
ast_free(pgdbuser);
if (!(pgdbuser = ast_strdup(tmp))) {
ast_log(LOG_WARNING,"PostgreSQL Ran out of memory copying user info\n");
return AST_MODULE_LOAD_DECLINE;
}
if (!(tmp = ast_variable_retrieve(cfg, "global", "password"))) {
ast_log(LOG_WARNING, "PostgreSQL database password not specified. Assuming blank\n");
tmp = "";
}
if (pgpassword)
ast_free(pgpassword);
if (!(pgpassword = ast_strdup(tmp))) {
ast_log(LOG_WARNING,"PostgreSQL Ran out of memory copying password info\n");
return AST_MODULE_LOAD_DECLINE;
}
if (!(tmp = ast_variable_retrieve(cfg, "global", "appname"))) {
tmp = "";
}
if (pgappname) {
ast_free(pgappname);
}
if (!(pgappname = ast_strdup(tmp))) {
ast_log(LOG_WARNING,"PostgreSQL Ran out of memory copying appname info\n");
return AST_MODULE_LOAD_DECLINE;
}
if (!(tmp = ast_variable_retrieve(cfg,"global","port"))) {
ast_log(LOG_WARNING,"PostgreSQL database port not specified. Using default 5432.\n");
tmp = "5432";
}
if (pgdbport)
ast_free(pgdbport);
if (!(pgdbport = ast_strdup(tmp))) {
ast_log(LOG_WARNING,"PostgreSQL Ran out of memory copying port info\n");
return AST_MODULE_LOAD_DECLINE;
}
if (!(tmp = ast_variable_retrieve(cfg, "global", "table"))) {
ast_log(LOG_WARNING,"CEL table not specified. Assuming cel\n");
tmp = "cel";
}
if (table)
ast_free(table);
if (!(table = ast_strdup(tmp))) {
return AST_MODULE_LOAD_DECLINE;
}
cel_show_user_def = CEL_SHOW_USERDEF_DEFAULT;
if ((tmp = ast_variable_retrieve(cfg, "global", "show_user_defined"))) {
cel_show_user_def = ast_true(tmp) ? 1 : 0;
}
if ((tmp = ast_variable_retrieve(cfg, "global", "usegmtime"))) {
usegmtime = ast_true(tmp);
} else {
usegmtime = 0;
}
if (!(tmp = ast_variable_retrieve(cfg, "global", "schema"))) {
tmp = "";
}
if (schema) {
ast_free(schema);
}
if (!(schema = ast_strdup(tmp))) {
ast_log(LOG_WARNING,"PostgreSQL Ran out of memory copying schema info\n");
return AST_MODULE_LOAD_DECLINE;
}
if (DEBUG_ATLEAST(3)) {
if (ast_strlen_zero(pghostname)) {
ast_log(LOG_DEBUG, "cel_pgsql: using default unix socket\n");
} else {
ast_log(LOG_DEBUG, "cel_pgsql: got hostname of %s\n", pghostname);
}
ast_log(LOG_DEBUG, "cel_pgsql: got port of %s\n", pgdbport);
ast_log(LOG_DEBUG, "cel_pgsql: got user of %s\n", pgdbuser);
ast_log(LOG_DEBUG, "cel_pgsql: got dbname of %s\n", pgdbname);
ast_log(LOG_DEBUG, "cel_pgsql: got password of %s\n", pgpassword);
ast_log(LOG_DEBUG, "cel_pgsql: got sql table name of %s\n", table);
ast_log(LOG_DEBUG, "cel_pgsql: got show_user_defined of %s\n",
cel_show_user_def ? "Yes" : "No");
}
pgsql_reconnect();
if (PQstatus(conn) != CONNECTION_BAD) {
char sqlcmd[768];
char *fname, *ftype, *flen, *fnotnull, *fdef, *tablename, *tmp_tablename;
int i, rows, version;
ast_debug(1, "Successfully connected to PostgreSQL database.\n");
connected = 1;
version = PQserverVersion(conn);
/* Remove any schema name from the table */
if ((tmp_tablename = strrchr(table, '.'))) {
tmp_tablename++;
} else {
tmp_tablename = table;
}
tablename = ast_alloca(strlen(tmp_tablename) * 2 + 1);
PQescapeStringConn(conn, tablename, tmp_tablename, strlen(tmp_tablename), NULL);
if (version >= PGSQL_MIN_VERSION_SCHEMA) {
char *schemaname;
int lenschema;
lenschema = strlen(schema);
schemaname = ast_alloca(lenschema * 2 + 1);
PQescapeStringConn(conn, schemaname, schema, lenschema, NULL);
snprintf(sqlcmd, sizeof(sqlcmd),
"SELECT a.attname, t.typname, a.attlen, a.attnotnull, pg_catalog.pg_get_expr(d.adbin, d.adrelid) adsrc, a.atttypmod "
"FROM (((pg_catalog.pg_class c INNER JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace "
"AND c.relname = '%s' AND n.nspname = %s%s%s) "
"INNER JOIN pg_catalog.pg_attribute a ON ("
"NOT a.attisdropped) AND a.attnum > 0 AND a.attrelid = c.oid) "
"INNER JOIN pg_catalog.pg_type t ON t.oid = a.atttypid) "
"LEFT OUTER JOIN pg_attrdef d ON a.atthasdef AND d.adrelid = a.attrelid "
"AND d.adnum = a.attnum "
"ORDER BY n.nspname, c.relname, attnum",
tablename,
lenschema == 0 ? "" : "'", lenschema == 0 ? "current_schema()" : schemaname, lenschema == 0 ? "" : "'");
} else {
snprintf(sqlcmd, sizeof(sqlcmd),
"SELECT a.attname, t.typname, a.attlen, a.attnotnull, d.adsrc, a.atttypmod "
"FROM pg_class c, pg_type t, pg_attribute a "
"LEFT OUTER JOIN pg_attrdef d ON a.atthasdef AND d.adrelid = a.attrelid "
"AND d.adnum = a.attnum WHERE c.oid = a.attrelid AND a.atttypid = t.oid "
"AND (a.attnum > 0) AND c.relname = '%s' ORDER BY c.relname, attnum", tablename);
}
/* Query the columns */
result = PQexec(conn, sqlcmd);
if (PQresultStatus(result) != PGRES_TUPLES_OK) {
pgerror = PQresultErrorMessage(result);
ast_log(LOG_ERROR, "Failed to query database columns: %s\n", pgerror);
PQclear(result);
unload_module();
return AST_MODULE_LOAD_DECLINE;
}
rows = PQntuples(result);
for (i = 0; i < rows; i++) {
fname = PQgetvalue(result, i, 0);
ftype = PQgetvalue(result, i, 1);
flen = PQgetvalue(result, i, 2);
fnotnull = PQgetvalue(result, i, 3);
fdef = PQgetvalue(result, i, 4);
ast_verb(4, "Found column '%s' of type '%s'\n", fname, ftype);
cur = ast_calloc(1, sizeof(*cur) + strlen(fname) + strlen(ftype) + 2);
if (cur) {
sscanf(flen, "%30d", &cur->len);
cur->name = (char *)cur + sizeof(*cur);
cur->type = (char *)cur + sizeof(*cur) + strlen(fname) + 1;
strcpy(cur->name, fname);
strcpy(cur->type, ftype);
if (*fnotnull == 't') {
cur->notnull = 1;
} else {
cur->notnull = 0;
}
if (!ast_strlen_zero(fdef)) {
cur->hasdefault = 1;
} else {
cur->hasdefault = 0;
}
AST_RWLIST_INSERT_TAIL(&psql_columns, cur, list);
}
}
PQclear(result);
} else {
pgerror = PQerrorMessage(conn);
ast_log(LOG_ERROR, "cel_pgsql: Unable to connect to database server %s. CALLS WILL NOT BE LOGGED!!\n", pghostname);
ast_log(LOG_ERROR, "cel_pgsql: Reason: %s\n", pgerror);
connected = 0;
PQfinish(conn);
conn = NULL;
}
return AST_MODULE_LOAD_SUCCESS;
}
static int my_load_module(int reload)
{
struct ast_config *cfg;
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
if ((cfg = ast_config_load(config, config_flags)) == NULL || cfg == CONFIG_STATUS_FILEINVALID) {
ast_log(LOG_WARNING, "Unable to load config for PostgreSQL CEL's: %s\n", config);
return AST_MODULE_LOAD_DECLINE;
} else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
return AST_MODULE_LOAD_SUCCESS;
}
if (reload) {
my_unload_module();
}
process_my_load_module(cfg);
ast_config_destroy(cfg);
if (ast_cel_backend_register(PGSQL_BACKEND_NAME, pgsql_log)) {
ast_log(LOG_WARNING, "Unable to subscribe to CEL events for pgsql\n");
return AST_MODULE_LOAD_DECLINE;
}
return AST_MODULE_LOAD_SUCCESS;
}
static int load_module(void)
{
return my_load_module(0);
}
static int reload(void)
{
return my_load_module(1);
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PostgreSQL CEL Backend",
.support_level = AST_MODULE_SUPPORT_EXTENDED,
.load = load_module,
.unload = unload_module,
.reload = reload,
.load_pri = AST_MODPRI_CDR_DRIVER,
.requires = "cel",
);
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