* collectd - src/utils_db_query.c
* Copyright (C) 2008,2009 Florian octo Forster
*
- * 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.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * 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
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Florian octo Forster <octo at verplant.org>
+ * Florian octo Forster <octo at collectd.org>
**/
#include "collectd.h"
size_t instances_num;
char **values;
size_t values_num;
+ char **metadata;
+ size_t metadata_num;
udb_result_t *next;
}; /* }}} */
const data_set_t *ds;
size_t *instances_pos;
size_t *values_pos;
+ size_t *metadata_pos;
char **instances_buffer;
char **values_buffer;
+ char **metadata_buffer;
struct udb_result_preparation_area_s *next;
}; /* }}} */
{
value_list_t vl = VALUE_LIST_INIT;
size_t i;
+ int status;
assert (r != NULL);
assert (r_area->ds != NULL);
vl.type_instance[sizeof (vl.type_instance) - 1] = 0;
/* }}} */
+ /* Annotate meta data. {{{ */
+ if (r->metadata_num > 0)
+ {
+ vl.meta = meta_data_create ();
+ if (vl.meta == NULL)
+ {
+ ERROR ("db query utils:: meta_data_create failed.");
+ return (-ENOMEM);
+ }
+
+ for (i = 0; i < r->metadata_num; i++)
+ {
+ status = meta_data_add_string (vl.meta, r->metadata[i],
+ r_area->metadata_buffer[i]);
+ if (status != 0)
+ {
+ ERROR ("db query utils:: meta_data_add_string failed.");
+ meta_data_destroy (vl.meta);
+ vl.meta = NULL;
+ return (status);
+ }
+ }
+ }
+ /* }}} */
+
plugin_dispatch_values (&vl);
+ if (r->metadata_num > 0)
+ {
+ meta_data_destroy (vl.meta);
+ vl.meta = NULL;
+ }
sfree (vl.values);
return (0);
} /* }}} void udb_result_submit */
prep_area->ds = NULL;
sfree (prep_area->instances_pos);
sfree (prep_area->values_pos);
+ sfree (prep_area->metadata_pos);
sfree (prep_area->instances_buffer);
sfree (prep_area->values_buffer);
+ sfree (prep_area->metadata_buffer);
} /* }}} void udb_result_finish_result */
static int udb_result_handle_result (udb_result_t *r, /* {{{ */
for (i = 0; i < r->values_num; i++)
r_area->values_buffer[i] = column_values[r_area->values_pos[i]];
+ for (i = 0; i < r->metadata_num; i++)
+ r_area->metadata_buffer[i] = column_values[r_area->metadata_pos[i]];
+
return udb_result_submit (r, r_area, q, q_area);
} /* }}} int udb_result_handle_result */
prep_area->ds = NULL; \
sfree (prep_area->instances_pos); \
sfree (prep_area->values_pos); \
+ sfree (prep_area->metadata_pos); \
sfree (prep_area->instances_buffer); \
sfree (prep_area->values_buffer); \
+ sfree (prep_area->metadata_buffer); \
return (status)
/* Make sure previous preparations are cleaned up. */
udb_result_finish_result (r, prep_area);
prep_area->instances_pos = NULL;
prep_area->values_pos = NULL;
+ prep_area->metadata_pos = NULL;
/* Read `ds' and check number of values {{{ */
prep_area->ds = plugin_get_ds (r->type);
}
/* }}} */
- /* Allocate r->instances_pos, r->values_pos, r->instances_buffer, and
- * r->values_buffer {{{ */
+ /* Allocate r->instances_pos, r->values_pos, r->metadata_post,
+ * r->instances_buffer, r->values_buffer, and r->metadata_buffer {{{ */
if (r->instances_num > 0)
{
prep_area->instances_pos
ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
BAIL_OUT (-ENOMEM);
}
+
+ prep_area->metadata_pos
+ = (size_t *) calloc (r->metadata_num, sizeof (size_t));
+ if (prep_area->metadata_pos == NULL)
+ {
+ ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
+ BAIL_OUT (-ENOMEM);
+ }
+
+ prep_area->metadata_buffer
+ = (char **) calloc (r->metadata_num, sizeof (char *));
+ if (prep_area->metadata_buffer == NULL)
+ {
+ ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
+ BAIL_OUT (-ENOMEM);
+ }
+
/* }}} */
/* Determine the position of the instance columns {{{ */
}
} /* }}} for (i = 0; i < r->values_num; i++) */
+ /* Determine the position of the metadata columns {{{ */
+ for (i = 0; i < r->metadata_num; i++)
+ {
+ size_t j;
+
+ for (j = 0; j < column_num; j++)
+ {
+ if (strcasecmp (r->metadata[i], column_names[j]) == 0)
+ {
+ prep_area->metadata_pos[i] = j;
+ break;
+ }
+ }
+
+ if (j >= column_num)
+ {
+ ERROR ("db query utils: udb_result_prepare_result: "
+ "Metadata column `%s' could not be found.",
+ r->values[i]);
+ BAIL_OUT (-ENOENT);
+ }
+ } /* }}} for (i = 0; i < r->metadata_num; i++) */
+
#undef BAIL_OUT
return (0);
} /* }}} int udb_result_prepare_result */
sfree (r->values[i]);
sfree (r->values);
+ for (i = 0; i < r->metadata_num; i++)
+ sfree (r->metadata[i]);
+ sfree (r->metadata);
+
udb_result_free (r->next);
sfree (r);
r->instance_prefix = NULL;
r->instances = NULL;
r->values = NULL;
+ r->metadata = NULL;
r->next = NULL;
/* Fill the `udb_result_t' structure.. */
status = udb_config_add_string (&r->instances, &r->instances_num, child);
else if (strcasecmp ("ValuesFrom", child->key) == 0)
status = udb_config_add_string (&r->values, &r->values_num, child);
+ else if (strcasecmp ("MetadataFrom", child->key) == 0)
+ status = udb_config_add_string (&r->metadata, &r->metadata_num, child);
else
{
WARNING ("db query utils: Query `%s': Option `%s' not allowed here.",
projects / collectd.git / blobdiff