* collectd - src/postgresql.c
* Copyright (C) 2008, 2009 Sebastian Harl
* Copyright (C) 2009 Florian Forster
+ * All rights reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; only version 2 of the License is applicable.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
*
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
*
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
*
* Authors:
* Sebastian Harl <sh at tokkee.org>
int max_params_num;
/* user configuration */
+ udb_query_preparation_area_t **q_prep_areas;
udb_query_t **queries;
size_t queries_num;
db = (c_psql_database_t *)malloc (sizeof (*db));
if (NULL == db) {
log_err ("Out of memory.");
- exit (5);
+ return NULL;
}
db->conn = NULL;
db->max_params_num = 0;
+ db->q_prep_areas = NULL;
db->queries = NULL;
db->queries_num = 0;
static void c_psql_database_delete (void *data)
{
+ size_t i;
+
c_psql_database_t *db = data;
PQfinish (db->conn);
db->conn = NULL;
+ if (db->q_prep_areas)
+ for (i = 0; i < db->queries_num; ++i)
+ udb_query_delete_preparation_area (db->q_prep_areas[i]);
+ free (db->q_prep_areas);
+
sfree (db->queries);
db->queries_num = 0;
params[i] = db->user;
break;
case C_PSQL_PARAM_INTERVAL:
- ssnprintf (interval, sizeof (interval), "%i", interval_g);
+ ssnprintf (interval, sizeof (interval), "%i",
+ db->interval > 0 ? db->interval : interval_g);
params[i] = interval;
break;
default:
NULL, NULL, /* return text data */ 0);
} /* c_psql_exec_query_params */
-static int c_psql_exec_query (c_psql_database_t *db, udb_query_t *q)
+static int c_psql_exec_query (c_psql_database_t *db, udb_query_t *q,
+ udb_query_preparation_area_t *prep_area)
{
PGresult *res;
else
host = db->host;
- status = udb_query_prepare_result (q, host, "postgresql",
- db->database, column_names, (size_t) column_num);
+ status = udb_query_prepare_result (q, prep_area, host, "postgresql",
+ db->database, column_names, (size_t) column_num, db->interval);
if (0 != status) {
log_err ("udb_query_prepare_result failed with status %i.",
status);
if (col < column_num)
continue;
- status = udb_query_handle_result (q, column_values);
+ status = udb_query_handle_result (q, prep_area, column_values);
if (status != 0) {
log_err ("udb_query_handle_result failed with status %i.",
status);
}
} /* for (row = 0; row < rows_num; ++row) */
+ udb_query_finish_result (q, prep_area);
+
BAIL_OUT (0);
#undef BAIL_OUT
} /* c_psql_exec_query */
static int c_psql_read (user_data_t *ud)
{
c_psql_database_t *db;
+
+ int success = 0;
int i;
if ((ud == NULL) || (ud->data == NULL)) {
for (i = 0; i < db->queries_num; ++i)
{
+ udb_query_preparation_area_t *prep_area;
udb_query_t *q;
+ prep_area = db->q_prep_areas[i];
q = db->queries[i];
if ((0 != db->server_version)
- && (udb_query_check_version (q, db->server_version) <= 0))
- return -1;
+ && (udb_query_check_version (q, db->server_version) <= 0))
+ continue;
- c_psql_exec_query (db, q);
+ if (0 == c_psql_exec_query (db, q, prep_area))
+ success = 1;
}
+
+ if (! success)
+ return -1;
return 0;
} /* c_psql_read */
memset (&ud, 0, sizeof (ud));
db = c_psql_database_new (ci->values[0].value.string);
+ if (db == NULL)
+ return -1;
for (i = 0; i < ci->children_num; ++i) {
oconfig_item_t *c = ci->children + i;
}
/* If no `Query' options were given, add the default queries.. */
- if (db->queries_num == 0)
- {
+ if (db->queries_num == 0) {
for (i = 0; i < def_queries_num; i++)
udb_query_pick_from_list_by_name (def_queries[i],
queries, queries_num,
&db->queries, &db->queries_num);
}
+ if (db->queries_num > 0) {
+ db->q_prep_areas = (udb_query_preparation_area_t **) calloc (
+ db->queries_num, sizeof (*db->q_prep_areas));
+
+ if (db->q_prep_areas == NULL) {
+ log_err ("Out of memory.");
+ c_psql_database_delete (db);
+ return -1;
+ }
+ }
+
for (i = 0; (size_t)i < db->queries_num; ++i) {
c_psql_user_data_t *data;
data = udb_query_get_user_data (db->queries[i]);
if ((data != NULL) && (data->params_num > db->max_params_num))
db->max_params_num = data->params_num;
+
+ db->q_prep_areas[i]
+ = udb_query_allocate_preparation_area (db->queries[i]);
+
+ if (db->q_prep_areas[i] == NULL) {
+ log_err ("Out of memory.");
+ c_psql_database_delete (db);
+ return -1;
+ }
}
ud.data = db;
projects / collectd.git / blobdiff