1 /**
2 * collectd - src/postgresql.c
3 * Copyright (C) 2008 Sebastian Harl
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Author:
19 * Sebastian Harl <sh at tokkee.org>
20 **/
22 /*
23 * This module collects PostgreSQL database statistics.
24 */
26 #include "collectd.h"
27 #include "common.h"
29 #include "configfile.h"
30 #include "plugin.h"
32 #include "utils_complain.h"
34 #include <pg_config_manual.h>
35 #include <libpq-fe.h>
37 #define log_err(...) ERROR ("postgresql: " __VA_ARGS__)
38 #define log_warn(...) WARNING ("postgresql: " __VA_ARGS__)
39 #define log_info(...) INFO ("postgresql: " __VA_ARGS__)
41 #ifndef C_PSQL_DEFAULT_CONF
42 # define C_PSQL_DEFAULT_CONF PKGDATADIR "/postgresql_default.conf"
43 #endif
45 /* Appends the (parameter, value) pair to the string
46 * pointed to by 'buf' suitable to be used as argument
47 * for PQconnectdb(). If value equals NULL, the pair
48 * is ignored. */
49 #define C_PSQL_PAR_APPEND(buf, buf_len, parameter, value) \
50 if ((0 < (buf_len)) && (NULL != (value)) && ('\0' != *(value))) { \
51 int s = ssnprintf (buf, buf_len, " %s = '%s'", parameter, value); \
52 if (0 < s) { \
53 buf += s; \
54 buf_len -= s; \
55 } \
56 }
58 /* Returns the tuple (major, minor, patchlevel)
59 * for the given version number. */
60 #define C_PSQL_SERVER_VERSION3(server_version) \
61 (server_version) / 10000, \
62 (server_version) / 100 - (int)((server_version) / 10000) * 100, \
63 (server_version) - (int)((server_version) / 100) * 100
65 /* Returns true if the given host specifies a
66 * UNIX domain socket. */
67 #define C_PSQL_IS_UNIX_DOMAIN_SOCKET(host) \
68 ((NULL == (host)) || ('\0' == *(host)) || ('/' == *(host)))
70 /* Returns the tuple (host, delimiter, port) for a
71 * given (host, port) pair. Depending on the value of
72 * 'host' a UNIX domain socket or a TCP socket is
73 * assumed. */
74 #define C_PSQL_SOCKET3(host, port) \
75 ((NULL == (host)) || ('\0' == *(host))) ? DEFAULT_PGSOCKET_DIR : host, \
76 C_PSQL_IS_UNIX_DOMAIN_SOCKET (host) ? "/.s.PGSQL." : ":", \
77 port
79 typedef enum {
80 C_PSQL_PARAM_HOST = 1,
81 C_PSQL_PARAM_DB,
82 C_PSQL_PARAM_USER,
83 } c_psql_param_t;
85 typedef struct {
86 char *type;
87 char *type_instance;
88 int ds_type;
89 } c_psql_col_t;
91 typedef struct {
92 char *name;
93 char *query;
95 c_psql_param_t *params;
96 int params_num;
98 c_psql_col_t *cols;
99 int cols_num;
101 int min_pg_version;
102 int max_pg_version;
103 } c_psql_query_t;
105 typedef struct {
106 PGconn *conn;
107 c_complain_t conn_complaint;
109 int proto_version;
111 int max_params_num;
113 /* user configuration */
114 c_psql_query_t **queries;
115 int queries_num;
117 char *host;
118 char *port;
119 char *database;
120 char *user;
121 char *password;
123 char *sslmode;
125 char *krbsrvname;
127 char *service;
128 } c_psql_database_t;
130 static char *def_queries[] = {
131 "backends",
132 "transactions",
133 "queries",
134 "query_plans",
135 "table_states",
136 "disk_io",
137 "disk_usage"
138 };
139 static int def_queries_num = STATIC_ARRAY_SIZE (def_queries);
141 static c_psql_query_t *queries = NULL;
142 static int queries_num = 0;
144 static c_psql_database_t *databases = NULL;
145 static int databases_num = 0;
147 static c_psql_query_t *c_psql_query_new (const char *name)
148 {
149 c_psql_query_t *query;
151 ++queries_num;
152 if (NULL == (queries = (c_psql_query_t *)realloc (queries,
153 queries_num * sizeof (*queries)))) {
154 log_err ("Out of memory.");
155 exit (5);
156 }
157 query = queries + queries_num - 1;
159 query->name = sstrdup (name);
160 query->query = NULL;
162 query->params = NULL;
163 query->params_num = 0;
165 query->cols = NULL;
166 query->cols_num = 0;
168 query->min_pg_version = 0;
169 query->max_pg_version = INT_MAX;
170 return query;
171 } /* c_psql_query_new */
173 static void c_psql_query_delete (c_psql_query_t *query)
174 {
175 int i;
177 sfree (query->name);
178 sfree (query->query);
180 sfree (query->params);
181 query->params_num = 0;
183 for (i = 0; i < query->cols_num; ++i) {
184 sfree (query->cols[i].type);
185 sfree (query->cols[i].type_instance);
186 }
187 sfree (query->cols);
188 query->cols_num = 0;
189 return;
190 } /* c_psql_query_delete */
192 static c_psql_query_t *c_psql_query_get (const char *name, int server_version)
193 {
194 int i;
196 for (i = 0; i < queries_num; ++i)
197 if (0 == strcasecmp (name, queries[i].name)
198 && ((-1 == server_version)
199 || ((queries[i].min_pg_version <= server_version)
200 && (server_version <= queries[i].max_pg_version))))
201 return queries + i;
202 return NULL;
203 } /* c_psql_query_get */
205 static c_psql_database_t *c_psql_database_new (const char *name)
206 {
207 c_psql_database_t *db;
209 ++databases_num;
210 if (NULL == (databases = (c_psql_database_t *)realloc (databases,
211 databases_num * sizeof (*databases)))) {
212 log_err ("Out of memory.");
213 exit (5);
214 }
216 db = databases + (databases_num - 1);
218 db->conn = NULL;
220 C_COMPLAIN_INIT (&db->conn_complaint);
222 db->proto_version = 0;
224 db->max_params_num = 0;
226 db->queries = NULL;
227 db->queries_num = 0;
229 db->database = sstrdup (name);
230 db->host = NULL;
231 db->port = NULL;
232 db->user = NULL;
233 db->password = NULL;
235 db->sslmode = NULL;
237 db->krbsrvname = NULL;
239 db->service = NULL;
240 return db;
241 } /* c_psql_database_new */
243 static void c_psql_database_delete (c_psql_database_t *db)
244 {
245 PQfinish (db->conn);
247 sfree (db->queries);
248 db->queries_num = 0;
250 sfree (db->database);
251 sfree (db->host);
252 sfree (db->port);
253 sfree (db->user);
254 sfree (db->password);
256 sfree (db->sslmode);
258 sfree (db->krbsrvname);
260 sfree (db->service);
261 return;
262 } /* c_psql_database_delete */
264 static void submit (const c_psql_database_t *db,
265 const char *type, const char *type_instance,
266 value_t *values, size_t values_len)
267 {
268 value_list_t vl = VALUE_LIST_INIT;
270 vl.values = values;
271 vl.values_len = values_len;
272 vl.time = time (NULL);
274 if (C_PSQL_IS_UNIX_DOMAIN_SOCKET (db->host)
275 || (0 == strcmp (db->host, "localhost")))
276 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
277 else
278 sstrncpy (vl.host, db->host, sizeof (vl.host));
280 sstrncpy (vl.plugin, "postgresql", sizeof (vl.plugin));
281 sstrncpy (vl.plugin_instance, db->database, sizeof (vl.plugin_instance));
283 sstrncpy (vl.type, type, sizeof (vl.type));
285 if (NULL != type_instance)
286 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
288 plugin_dispatch_values (&vl);
289 return;
290 } /* submit */
292 static void submit_counter (const c_psql_database_t *db,
293 const char *type, const char *type_instance,
294 const char *value)
295 {
296 value_t values[1];
298 if ((NULL == value) || ('\0' == *value))
299 return;
301 values[0].counter = atoll (value);
302 submit (db, type, type_instance, values, 1);
303 return;
304 } /* submit_counter */
306 static void submit_gauge (const c_psql_database_t *db,
307 const char *type, const char *type_instance,
308 const char *value)
309 {
310 value_t values[1];
312 if ((NULL == value) || ('\0' == *value))
313 return;
315 values[0].gauge = atof (value);
316 submit (db, type, type_instance, values, 1);
317 return;
318 } /* submit_gauge */
320 static int c_psql_check_connection (c_psql_database_t *db)
321 {
322 /* "ping" */
323 PQclear (PQexec (db->conn, "SELECT 42;"));
325 if (CONNECTION_OK != PQstatus (db->conn)) {
326 PQreset (db->conn);
328 /* trigger c_release() */
329 if (0 == db->conn_complaint.interval)
330 db->conn_complaint.interval = 1;
332 if (CONNECTION_OK != PQstatus (db->conn)) {
333 c_complain (LOG_ERR, &db->conn_complaint,
334 "Failed to connect to database %s: %s",
335 db->database, PQerrorMessage (db->conn));
336 return -1;
337 }
339 db->proto_version = PQprotocolVersion (db->conn);
340 if (3 > db->proto_version)
341 log_warn ("Protocol version %d does not support parameters.",
342 db->proto_version);
343 }
345 c_release (LOG_INFO, &db->conn_complaint,
346 "Successfully reconnected to database %s", PQdb (db->conn));
347 return 0;
348 } /* c_psql_check_connection */
350 static PGresult *c_psql_exec_query_params (c_psql_database_t *db,
351 c_psql_query_t *query)
352 {
353 char *params[db->max_params_num];
354 int i;
356 assert (db->max_params_num >= query->params_num);
358 for (i = 0; i < query->params_num; ++i) {
359 switch (query->params[i]) {
360 case C_PSQL_PARAM_HOST:
361 params[i] = C_PSQL_IS_UNIX_DOMAIN_SOCKET (db->host)
362 ? "localhost" : db->host;
363 break;
364 case C_PSQL_PARAM_DB:
365 params[i] = db->database;
366 break;
367 case C_PSQL_PARAM_USER:
368 params[i] = db->user;
369 break;
370 default:
371 assert (0);
372 }
373 }
375 return PQexecParams (db->conn, query->query, query->params_num, NULL,
376 (const char *const *)((0 == query->params_num) ? NULL : params),
377 NULL, NULL, /* return text data */ 0);
378 } /* c_psql_exec_query_params */
380 static PGresult *c_psql_exec_query_noparams (c_psql_database_t *db,
381 c_psql_query_t *query)
382 {
383 return PQexec (db->conn, query->query);
384 } /* c_psql_exec_query_noparams */
386 static int c_psql_exec_query (c_psql_database_t *db, int idx)
387 {
388 c_psql_query_t *query;
389 PGresult *res;
391 int rows, cols;
392 int i;
394 if (idx >= db->queries_num)
395 return -1;
397 query = db->queries[idx];
399 if (3 <= db->proto_version)
400 res = c_psql_exec_query_params (db, query);
401 else if (0 == query->params_num)
402 res = c_psql_exec_query_noparams (db, query);
403 else {
404 log_err ("Connection to database \"%s\" does not support parameters "
405 "(protocol version %d) - cannot execute query \"%s\".",
406 db->database, db->proto_version, query->name);
407 return -1;
408 }
410 if (PGRES_TUPLES_OK != PQresultStatus (res)) {
411 log_err ("Failed to execute SQL query: %s",
412 PQerrorMessage (db->conn));
413 log_info ("SQL query was: %s", query->query);
414 PQclear (res);
415 return -1;
416 }
418 rows = PQntuples (res);
419 if (1 > rows)
420 return 0;
422 cols = PQnfields (res);
423 if (query->cols_num != cols) {
424 log_err ("SQL query returned wrong number of fields "
425 "(expected: %i, got: %i)", query->cols_num, cols);
426 log_info ("SQL query was: %s", query->query);
427 return -1;
428 }
430 for (i = 0; i < rows; ++i) {
431 int j;
433 for (j = 0; j < cols; ++j) {
434 c_psql_col_t col = query->cols[j];
436 char *value = PQgetvalue (res, i, j);
438 if (col.ds_type == DS_TYPE_COUNTER)
439 submit_counter (db, col.type, col.type_instance, value);
440 else if (col.ds_type == DS_TYPE_GAUGE)
441 submit_gauge (db, col.type, col.type_instance, value);
442 }
443 }
444 return 0;
445 } /* c_psql_exec_query */
447 static int c_psql_read (void)
448 {
449 int success = 0;
450 int i;
452 for (i = 0; i < databases_num; ++i) {
453 c_psql_database_t *db = databases + i;
455 int j;
457 assert (NULL != db->database);
459 if (0 != c_psql_check_connection (db))
460 continue;
462 for (j = 0; j < db->queries_num; ++j)
463 c_psql_exec_query (db, j);
465 ++success;
466 }
468 if (! success)
469 return -1;
470 return 0;
471 } /* c_psql_read */
473 static int c_psql_shutdown (void)
474 {
475 int i;
477 if ((NULL == databases) || (0 == databases_num))
478 return 0;
480 plugin_unregister_read ("postgresql");
481 plugin_unregister_shutdown ("postgresql");
483 for (i = 0; i < databases_num; ++i) {
484 c_psql_database_t *db = databases + i;
485 c_psql_database_delete (db);
486 }
488 sfree (databases);
489 databases_num = 0;
491 for (i = 0; i < queries_num; ++i) {
492 c_psql_query_t *query = queries + i;
493 c_psql_query_delete (query);
494 }
496 sfree (queries);
497 queries_num = 0;
498 return 0;
499 } /* c_psql_shutdown */
501 static int c_psql_init (void)
502 {
503 int i;
505 if ((NULL == databases) || (0 == databases_num))
506 return 0;
508 for (i = 0; i < queries_num; ++i) {
509 c_psql_query_t *query = queries + i;
510 int j;
512 for (j = 0; j < query->cols_num; ++j) {
513 c_psql_col_t *col = query->cols + j;
514 const data_set_t *ds;
516 ds = plugin_get_ds (col->type);
517 if (NULL == ds) {
518 log_err ("Column: Unknown type \"%s\".", col->type);
519 c_psql_shutdown ();
520 return -1;
521 }
523 if (1 != ds->ds_num) {
524 log_err ("Column: Invalid type \"%s\" - types defining "
525 "one data source are supported only (got: %i).",
526 col->type, ds->ds_num);
527 c_psql_shutdown ();
528 return -1;
529 }
531 col->ds_type = ds->ds[0].type;
532 }
533 }
535 for (i = 0; i < databases_num; ++i) {
536 c_psql_database_t *db = databases + i;
538 char conninfo[4096];
539 char *buf = conninfo;
540 int buf_len = sizeof (conninfo);
541 int status;
543 char *server_host;
544 int server_version;
546 int j;
548 status = ssnprintf (buf, buf_len, "dbname = '%s'", db->database);
549 if (0 < status) {
550 buf += status;
551 buf_len -= status;
552 }
554 C_PSQL_PAR_APPEND (buf, buf_len, "host", db->host);
555 C_PSQL_PAR_APPEND (buf, buf_len, "port", db->port);
556 C_PSQL_PAR_APPEND (buf, buf_len, "user", db->user);
557 C_PSQL_PAR_APPEND (buf, buf_len, "password", db->password);
558 C_PSQL_PAR_APPEND (buf, buf_len, "sslmode", db->sslmode);
559 C_PSQL_PAR_APPEND (buf, buf_len, "krbsrvname", db->krbsrvname);
560 C_PSQL_PAR_APPEND (buf, buf_len, "service", db->service);
562 db->conn = PQconnectdb (conninfo);
563 if (0 != c_psql_check_connection (db))
564 continue;
566 db->proto_version = PQprotocolVersion (db->conn);
568 server_host = PQhost (db->conn);
569 server_version = PQserverVersion (db->conn);
570 log_info ("Sucessfully connected to database %s (user %s) "
571 "at server %s%s%s (server version: %d.%d.%d, "
572 "protocol version: %d, pid: %d)",
573 PQdb (db->conn), PQuser (db->conn),
574 C_PSQL_SOCKET3 (server_host, PQport (db->conn)),
575 C_PSQL_SERVER_VERSION3 (server_version),
576 db->proto_version, PQbackendPID (db->conn));
578 if (3 > db->proto_version)
579 log_warn ("Protocol version %d does not support parameters.",
580 db->proto_version);
582 /* Now that we know the PostgreSQL server version, we can get the
583 * right version of each query definition. */
584 for (j = 0; j < db->queries_num; ++j) {
585 c_psql_query_t *tmp;
587 tmp = c_psql_query_get (db->queries[j]->name, server_version);
589 if (tmp == db->queries[j])
590 continue;
592 if (NULL == tmp) {
593 log_err ("Query \"%s\" not found for server version %i - "
594 "please check your configuration.",
595 db->queries[j]->name, server_version);
597 if (db->queries_num - j - 1 > 0)
598 memmove (db->queries + j, db->queries + j + 1,
599 (db->queries_num - j - 1) * sizeof (*db->queries));
601 --db->queries_num;
602 --j;
603 continue;
604 }
606 db->queries[j] = tmp;
607 }
608 }
610 plugin_register_read ("postgresql", c_psql_read);
611 plugin_register_shutdown ("postgresql", c_psql_shutdown);
612 return 0;
613 } /* c_psql_init */
615 static int config_set_s (char *name, char **var, const oconfig_item_t *ci)
616 {
617 if ((0 != ci->children_num) || (1 != ci->values_num)
618 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
619 log_err ("%s expects a single string argument.", name);
620 return 1;
621 }
623 sfree (*var);
624 *var = sstrdup (ci->values[0].value.string);
625 return 0;
626 } /* config_set_s */
628 static int config_set_i (char *name, int *var, const oconfig_item_t *ci)
629 {
630 if ((0 != ci->children_num) || (1 != ci->values_num)
631 || (OCONFIG_TYPE_NUMBER != ci->values[0].type)) {
632 log_err ("%s expects a single number argument.", name);
633 return 1;
634 }
636 *var = (int)ci->values[0].value.number;
637 return 0;
638 } /* config_set_i */
640 static int config_set_param (c_psql_query_t *query, const oconfig_item_t *ci)
641 {
642 c_psql_param_t param;
643 char *param_str;
645 if ((0 != ci->children_num) || (1 != ci->values_num)
646 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
647 log_err ("Param expects a single string argument.");
648 return 1;
649 }
651 param_str = ci->values[0].value.string;
652 if (0 == strcasecmp (param_str, "hostname"))
653 param = C_PSQL_PARAM_HOST;
654 else if (0 == strcasecmp (param_str, "database"))
655 param = C_PSQL_PARAM_DB;
656 else if (0 == strcasecmp (param_str, "username"))
657 param = C_PSQL_PARAM_USER;
658 else {
659 log_err ("Invalid parameter \"%s\".", param_str);
660 return 1;
661 }
663 ++query->params_num;
664 if (NULL == (query->params = (c_psql_param_t *)realloc (query->params,
665 query->params_num * sizeof (*query->params)))) {
666 log_err ("Out of memory.");
667 exit (5);
668 }
670 query->params[query->params_num - 1] = param;
671 return 0;
672 } /* config_set_param */
674 static int config_set_column (c_psql_query_t *query, const oconfig_item_t *ci)
675 {
676 c_psql_col_t *col;
678 int i;
680 if ((0 != ci->children_num)
681 || (1 > ci->values_num) || (2 < ci->values_num)) {
682 log_err ("Column expects either one or two arguments.");
683 return 1;
684 }
686 for (i = 0; i < ci->values_num; ++i) {
687 if (OCONFIG_TYPE_STRING != ci->values[i].type) {
688 log_err ("Column expects either one or two string arguments.");
689 return 1;
690 }
691 }
693 ++query->cols_num;
694 if (NULL == (query->cols = (c_psql_col_t *)realloc (query->cols,
695 query->cols_num * sizeof (*query->cols)))) {
696 log_err ("Out of memory.");
697 exit (5);
698 }
700 col = query->cols + query->cols_num - 1;
702 col->ds_type = -1;
704 col->type = sstrdup (ci->values[0].value.string);
705 col->type_instance = (2 == ci->values_num)
706 ? sstrdup (ci->values[1].value.string) : NULL;
707 return 0;
708 } /* config_set_column */
710 static int set_query (c_psql_database_t *db, const char *name)
711 {
712 c_psql_query_t *query;
714 query = c_psql_query_get (name, -1);
715 if (NULL == query) {
716 log_err ("Query \"%s\" not found - please check your configuration.",
717 name);
718 return 1;
719 }
721 ++db->queries_num;
722 if (NULL == (db->queries = (c_psql_query_t **)realloc (db->queries,
723 db->queries_num * sizeof (*db->queries)))) {
724 log_err ("Out of memory.");
725 exit (5);
726 }
728 if (query->params_num > db->max_params_num)
729 db->max_params_num = query->params_num;
731 db->queries[db->queries_num - 1] = query;
732 return 0;
733 } /* set_query */
735 static int config_set_query (c_psql_database_t *db, const oconfig_item_t *ci)
736 {
737 if ((0 != ci->children_num) || (1 != ci->values_num)
738 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
739 log_err ("Query expects a single string argument.");
740 return 1;
741 }
742 return set_query (db, ci->values[0].value.string);
743 } /* config_set_query */
745 static int c_psql_config_query (oconfig_item_t *ci)
746 {
747 c_psql_query_t *query;
749 int i;
751 if ((1 != ci->values_num)
752 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
753 log_err ("<Query> expects a single string argument.");
754 return 1;
755 }
757 query = c_psql_query_new (ci->values[0].value.string);
759 for (i = 0; i < ci->children_num; ++i) {
760 oconfig_item_t *c = ci->children + i;
762 if (0 == strcasecmp (c->key, "Query"))
763 config_set_s ("Query", &query->query, c);
764 else if (0 == strcasecmp (c->key, "Param"))
765 config_set_param (query, c);
766 else if (0 == strcasecmp (c->key, "Column"))
767 config_set_column (query, c);
768 else if (0 == strcasecmp (c->key, "MinPGVersion"))
769 config_set_i ("MinPGVersion", &query->min_pg_version, c);
770 else if (0 == strcasecmp (c->key, "MaxPGVersion"))
771 config_set_i ("MaxPGVersion", &query->max_pg_version, c);
772 else
773 log_warn ("Ignoring unknown config key \"%s\".", c->key);
774 }
776 for (i = 0; i < queries_num - 1; ++i) {
777 c_psql_query_t *q = queries + i;
779 if ((0 == strcasecmp (q->name, query->name))
780 && (q->min_pg_version <= query->max_pg_version)
781 && (query->min_pg_version <= q->max_pg_version)) {
782 log_err ("Ignoring redefinition (with overlapping version ranges) "
783 "of query \"%s\".", query->name);
784 c_psql_query_delete (query);
785 --queries_num;
786 return 1;
787 }
788 }
790 if (query->min_pg_version > query->max_pg_version) {
791 log_err ("Query \"%s\": MinPGVersion > MaxPGVersion.",
792 query->name);
793 c_psql_query_delete (query);
794 --queries_num;
795 return 1;
796 }
798 if (NULL == query->query) {
799 log_err ("Query \"%s\" does not include an SQL query string - "
800 "please check your configuration.", query->name);
801 c_psql_query_delete (query);
802 --queries_num;
803 return 1;
804 }
805 return 0;
806 } /* c_psql_config_query */
808 static int c_psql_config_database (oconfig_item_t *ci)
809 {
810 c_psql_database_t *db;
812 int i;
814 if ((1 != ci->values_num)
815 || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
816 log_err ("<Database> expects a single string argument.");
817 return 1;
818 }
820 db = c_psql_database_new (ci->values[0].value.string);
822 for (i = 0; i < ci->children_num; ++i) {
823 oconfig_item_t *c = ci->children + i;
825 if (0 == strcasecmp (c->key, "Host"))
826 config_set_s ("Host", &db->host, c);
827 else if (0 == strcasecmp (c->key, "Port"))
828 config_set_s ("Port", &db->port, c);
829 else if (0 == strcasecmp (c->key, "User"))
830 config_set_s ("User", &db->user, c);
831 else if (0 == strcasecmp (c->key, "Password"))
832 config_set_s ("Password", &db->password, c);
833 else if (0 == strcasecmp (c->key, "SSLMode"))
834 config_set_s ("SSLMode", &db->sslmode, c);
835 else if (0 == strcasecmp (c->key, "KRBSrvName"))
836 config_set_s ("KRBSrvName", &db->krbsrvname, c);
837 else if (0 == strcasecmp (c->key, "Service"))
838 config_set_s ("Service", &db->service, c);
839 else if (0 == strcasecmp (c->key, "Query"))
840 config_set_query (db, c);
841 else
842 log_warn ("Ignoring unknown config key \"%s\".", c->key);
843 }
845 if (NULL == db->queries) {
846 for (i = 0; i < def_queries_num; ++i)
847 set_query (db, def_queries[i]);
848 }
849 return 0;
850 }
852 static int c_psql_config (oconfig_item_t *ci)
853 {
854 static int have_def_config = 0;
856 int i;
858 if (0 == have_def_config) {
859 oconfig_item_t *c;
861 have_def_config = 1;
863 c = oconfig_parse_file (C_PSQL_DEFAULT_CONF);
864 if (NULL == c)
865 log_err ("Failed to read default config ("C_PSQL_DEFAULT_CONF").");
866 else
867 c_psql_config (c);
869 if (NULL == queries)
870 log_err ("Default config ("C_PSQL_DEFAULT_CONF") did not define "
871 "any queries - please check your installation.");
872 }
874 for (i = 0; i < ci->children_num; ++i) {
875 oconfig_item_t *c = ci->children + i;
877 if (0 == strcasecmp (c->key, "Query"))
878 c_psql_config_query (c);
879 else if (0 == strcasecmp (c->key, "Database"))
880 c_psql_config_database (c);
881 else
882 log_warn ("Ignoring unknown config key \"%s\".", c->key);
883 }
884 return 0;
885 } /* c_psql_config */
887 void module_register (void)
888 {
889 plugin_register_complex_config ("postgresql", c_psql_config);
890 plugin_register_init ("postgresql", c_psql_init);
891 } /* module_register */
893 /* vim: set sw=4 ts=4 tw=78 noexpandtab : */