2 * collectd - src/utils_db_query.c
3 * Copyright (C) 2008,2009 Florian octo Forster
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Florian octo Forster <octo at collectd.org>
30 #include "configfile.h"
31 #include "utils_db_query.h"
36 struct udb_result_s; /* {{{ */
37 typedef struct udb_result_s udb_result_t;
41 char *instance_prefix;
52 struct udb_query_s /* {{{ */
58 unsigned int min_version;
59 unsigned int max_version;
61 udb_result_t *results;
64 struct udb_result_preparation_area_s /* {{{ */
67 size_t *instances_pos;
70 char **instances_buffer;
72 char **metadata_buffer;
74 struct udb_result_preparation_area_s *next;
76 typedef struct udb_result_preparation_area_s udb_result_preparation_area_t;
78 struct udb_query_preparation_area_s /* {{{ */
87 udb_result_preparation_area_t *result_prep_areas;
91 * Config Private functions
93 static int udb_config_set_string (char **ret_string, /* {{{ */
98 if ((ci->values_num != 1)
99 || (ci->values[0].type != OCONFIG_TYPE_STRING))
101 WARNING ("db query utils: The `%s' config option "
102 "needs exactly one string argument.", ci->key);
106 string = strdup (ci->values[0].value.string);
109 ERROR ("db query utils: strdup failed.");
113 if (*ret_string != NULL)
115 *ret_string = string;
118 } /* }}} int udb_config_set_string */
120 static int udb_config_add_string (char ***ret_array, /* {{{ */
121 size_t *ret_array_len, oconfig_item_t *ci)
127 if (ci->values_num < 1)
129 WARNING ("db query utils: The `%s' config option "
130 "needs at least one argument.", ci->key);
134 for (i = 0; i < ci->values_num; i++)
136 if (ci->values[i].type != OCONFIG_TYPE_STRING)
138 WARNING ("db query utils: Argument %i to the `%s' option "
139 "is not a string.", i + 1, ci->key);
144 array_len = *ret_array_len;
145 array = (char **) realloc (*ret_array,
146 sizeof (char *) * (array_len + ci->values_num));
149 ERROR ("db query utils: realloc failed.");
154 for (i = 0; i < ci->values_num; i++)
156 array[array_len] = strdup (ci->values[i].value.string);
157 if (array[array_len] == NULL)
159 ERROR ("db query utils: strdup failed.");
160 *ret_array_len = array_len;
166 *ret_array_len = array_len;
168 } /* }}} int udb_config_add_string */
170 static int udb_config_set_uint (unsigned int *ret_value, /* {{{ */
175 if ((ci->values_num != 1)
176 || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
178 WARNING ("db query utils: The `%s' config option "
179 "needs exactly one numeric argument.", ci->key);
183 tmp = ci->values[0].value.number;
184 if ((tmp < 0.0) || (tmp > ((double) UINT_MAX)))
187 *ret_value = (unsigned int) (tmp + .5);
189 } /* }}} int udb_config_set_uint */
192 * Result private functions
194 static int udb_result_submit (udb_result_t *r, /* {{{ */
195 udb_result_preparation_area_t *r_area,
196 udb_query_t const *q, udb_query_preparation_area_t *q_area)
198 value_list_t vl = VALUE_LIST_INIT;
203 assert (r_area->ds != NULL);
204 assert (((size_t) r_area->ds->ds_num) == r->values_num);
205 assert (r->values_num > 0);
207 vl.values = (value_t *) calloc (r->values_num, sizeof (value_t));
208 if (vl.values == NULL)
210 ERROR ("db query utils: malloc failed.");
213 vl.values_len = r_area->ds->ds_num;
215 for (i = 0; i < r->values_num; i++)
217 char *value_str = r_area->values_buffer[i];
219 if (0 != parse_value (value_str, &vl.values[i], r_area->ds->ds[i].type))
221 ERROR ("db query utils: udb_result_submit: Parsing `%s' as %s failed.",
222 value_str, DS_TYPE_TO_STRING (r_area->ds->ds[i].type));
228 if (q_area->interval > 0)
229 vl.interval = q_area->interval;
231 sstrncpy (vl.host, q_area->host, sizeof (vl.host));
232 sstrncpy (vl.plugin, q_area->plugin, sizeof (vl.plugin));
233 sstrncpy (vl.plugin_instance, q_area->db_name, sizeof (vl.plugin_instance));
234 sstrncpy (vl.type, r->type, sizeof (vl.type));
236 /* Set vl.type_instance {{{ */
237 if (r->instances_num <= 0)
239 if (r->instance_prefix == NULL)
240 vl.type_instance[0] = 0;
242 sstrncpy (vl.type_instance, r->instance_prefix,
243 sizeof (vl.type_instance));
245 else /* if ((r->instances_num > 0) */
247 if (r->instance_prefix == NULL)
249 int status = strjoin (vl.type_instance, sizeof (vl.type_instance),
250 r_area->instances_buffer, r->instances_num, "-");
253 ERROR ("udb_result_submit: creating type_instance failed with status %d.",
260 char tmp[DATA_MAX_NAME_LEN];
262 int status = strjoin (tmp, sizeof (tmp), r_area->instances_buffer,
263 r->instances_num, "-");
266 ERROR ("udb_result_submit: creating type_instance failed with status %d.",
270 tmp[sizeof (tmp) - 1] = 0;
272 snprintf (vl.type_instance, sizeof (vl.type_instance), "%s-%s",
273 r->instance_prefix, tmp);
276 vl.type_instance[sizeof (vl.type_instance) - 1] = 0;
279 /* Annotate meta data. {{{ */
280 if (r->metadata_num > 0)
282 vl.meta = meta_data_create ();
285 ERROR ("db query utils:: meta_data_create failed.");
289 for (i = 0; i < r->metadata_num; i++)
291 status = meta_data_add_string (vl.meta, r->metadata[i],
292 r_area->metadata_buffer[i]);
295 ERROR ("db query utils:: meta_data_add_string failed.");
296 meta_data_destroy (vl.meta);
304 plugin_dispatch_values (&vl);
306 if (r->metadata_num > 0)
308 meta_data_destroy (vl.meta);
313 } /* }}} void udb_result_submit */
315 static void udb_result_finish_result (udb_result_t const *r, /* {{{ */
316 udb_result_preparation_area_t *prep_area)
318 if ((r == NULL) || (prep_area == NULL))
321 prep_area->ds = NULL;
322 sfree (prep_area->instances_pos);
323 sfree (prep_area->values_pos);
324 sfree (prep_area->metadata_pos);
325 sfree (prep_area->instances_buffer);
326 sfree (prep_area->values_buffer);
327 sfree (prep_area->metadata_buffer);
328 } /* }}} void udb_result_finish_result */
330 static int udb_result_handle_result (udb_result_t *r, /* {{{ */
331 udb_query_preparation_area_t *q_area,
332 udb_result_preparation_area_t *r_area,
333 udb_query_t const *q, char **column_values)
337 assert (r && q_area && r_area);
339 for (i = 0; i < r->instances_num; i++)
340 r_area->instances_buffer[i] = column_values[r_area->instances_pos[i]];
342 for (i = 0; i < r->values_num; i++)
343 r_area->values_buffer[i] = column_values[r_area->values_pos[i]];
345 for (i = 0; i < r->metadata_num; i++)
346 r_area->metadata_buffer[i] = column_values[r_area->metadata_pos[i]];
348 return udb_result_submit (r, r_area, q, q_area);
349 } /* }}} int udb_result_handle_result */
351 static int udb_result_prepare_result (udb_result_t const *r, /* {{{ */
352 udb_result_preparation_area_t *prep_area,
353 char **column_names, size_t column_num)
357 if ((r == NULL) || (prep_area == NULL))
360 #define BAIL_OUT(status) \
361 prep_area->ds = NULL; \
362 sfree (prep_area->instances_pos); \
363 sfree (prep_area->values_pos); \
364 sfree (prep_area->metadata_pos); \
365 sfree (prep_area->instances_buffer); \
366 sfree (prep_area->values_buffer); \
367 sfree (prep_area->metadata_buffer); \
370 /* Make sure previous preparations are cleaned up. */
371 udb_result_finish_result (r, prep_area);
372 prep_area->instances_pos = NULL;
373 prep_area->values_pos = NULL;
374 prep_area->metadata_pos = NULL;
376 /* Read `ds' and check number of values {{{ */
377 prep_area->ds = plugin_get_ds (r->type);
378 if (prep_area->ds == NULL)
380 ERROR ("db query utils: udb_result_prepare_result: Type `%s' is not "
381 "known by the daemon. See types.db(5) for details.",
386 if (((size_t) prep_area->ds->ds_num) != r->values_num)
388 ERROR ("db query utils: udb_result_prepare_result: The type `%s' "
389 "requires exactly %i value%s, but the configuration specifies %zu.",
391 prep_area->ds->ds_num, (prep_area->ds->ds_num == 1) ? "" : "s",
397 /* Allocate r->instances_pos, r->values_pos, r->metadata_post,
398 * r->instances_buffer, r->values_buffer, and r->metadata_buffer {{{ */
399 if (r->instances_num > 0)
401 prep_area->instances_pos
402 = (size_t *) calloc (r->instances_num, sizeof (size_t));
403 if (prep_area->instances_pos == NULL)
405 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
409 prep_area->instances_buffer
410 = (char **) calloc (r->instances_num, sizeof (char *));
411 if (prep_area->instances_buffer == NULL)
413 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
416 } /* if (r->instances_num > 0) */
418 prep_area->values_pos
419 = (size_t *) calloc (r->values_num, sizeof (size_t));
420 if (prep_area->values_pos == NULL)
422 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
426 prep_area->values_buffer
427 = (char **) calloc (r->values_num, sizeof (char *));
428 if (prep_area->values_buffer == NULL)
430 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
434 prep_area->metadata_pos
435 = (size_t *) calloc (r->metadata_num, sizeof (size_t));
436 if (prep_area->metadata_pos == NULL)
438 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
442 prep_area->metadata_buffer
443 = (char **) calloc (r->metadata_num, sizeof (char *));
444 if (prep_area->metadata_buffer == NULL)
446 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
452 /* Determine the position of the instance columns {{{ */
453 for (i = 0; i < r->instances_num; i++)
457 for (j = 0; j < column_num; j++)
459 if (strcasecmp (r->instances[i], column_names[j]) == 0)
461 prep_area->instances_pos[i] = j;
468 ERROR ("db query utils: udb_result_prepare_result: "
469 "Column `%s' could not be found.",
473 } /* }}} for (i = 0; i < r->instances_num; i++) */
475 /* Determine the position of the value columns {{{ */
476 for (i = 0; i < r->values_num; i++)
480 for (j = 0; j < column_num; j++)
482 if (strcasecmp (r->values[i], column_names[j]) == 0)
484 prep_area->values_pos[i] = j;
491 ERROR ("db query utils: udb_result_prepare_result: "
492 "Column `%s' could not be found.",
496 } /* }}} for (i = 0; i < r->values_num; i++) */
498 /* Determine the position of the metadata columns {{{ */
499 for (i = 0; i < r->metadata_num; i++)
503 for (j = 0; j < column_num; j++)
505 if (strcasecmp (r->metadata[i], column_names[j]) == 0)
507 prep_area->metadata_pos[i] = j;
514 ERROR ("db query utils: udb_result_prepare_result: "
515 "Metadata column `%s' could not be found.",
519 } /* }}} for (i = 0; i < r->metadata_num; i++) */
523 } /* }}} int udb_result_prepare_result */
525 static void udb_result_free (udb_result_t *r) /* {{{ */
534 for (i = 0; i < r->instances_num; i++)
535 sfree (r->instances[i]);
536 sfree (r->instances);
538 for (i = 0; i < r->values_num; i++)
539 sfree (r->values[i]);
542 for (i = 0; i < r->metadata_num; i++)
543 sfree (r->metadata[i]);
546 udb_result_free (r->next);
549 } /* }}} void udb_result_free */
551 static int udb_result_create (const char *query_name, /* {{{ */
552 udb_result_t **r_head, oconfig_item_t *ci)
558 if (ci->values_num != 0)
560 WARNING ("db query utils: The `Result' block doesn't accept "
561 "any arguments. Ignoring %i argument%s.",
562 ci->values_num, (ci->values_num == 1) ? "" : "s");
565 r = (udb_result_t *) malloc (sizeof (*r));
568 ERROR ("db query utils: malloc failed.");
571 memset (r, 0, sizeof (*r));
573 r->instance_prefix = NULL;
579 /* Fill the `udb_result_t' structure.. */
581 for (i = 0; i < ci->children_num; i++)
583 oconfig_item_t *child = ci->children + i;
585 if (strcasecmp ("Type", child->key) == 0)
586 status = udb_config_set_string (&r->type, child);
587 else if (strcasecmp ("InstancePrefix", child->key) == 0)
588 status = udb_config_set_string (&r->instance_prefix, child);
589 else if (strcasecmp ("InstancesFrom", child->key) == 0)
590 status = udb_config_add_string (&r->instances, &r->instances_num, child);
591 else if (strcasecmp ("ValuesFrom", child->key) == 0)
592 status = udb_config_add_string (&r->values, &r->values_num, child);
593 else if (strcasecmp ("MetadataFrom", child->key) == 0)
594 status = udb_config_add_string (&r->metadata, &r->metadata_num, child);
597 WARNING ("db query utils: Query `%s': Option `%s' not allowed here.",
598 query_name, child->key);
606 /* Check that all necessary options have been given. */
611 WARNING ("db query utils: `Type' not given for "
612 "result in query `%s'", query_name);
615 if (r->values == NULL)
617 WARNING ("db query utils: `ValuesFrom' not given for "
618 "result in query `%s'", query_name);
623 } /* while (status == 0) */
631 /* If all went well, add this result to the list of results. */
641 while (last->next != NULL)
648 } /* }}} int udb_result_create */
651 * Query private functions
653 static void udb_query_free_one (udb_query_t *q) /* {{{ */
659 sfree (q->statement);
661 udb_result_free (q->results);
664 } /* }}} void udb_query_free_one */
667 * Query public functions
669 int udb_query_create (udb_query_t ***ret_query_list, /* {{{ */
670 size_t *ret_query_list_len, oconfig_item_t *ci,
671 udb_query_create_callback_t cb)
673 udb_query_t **query_list;
674 size_t query_list_len;
680 if ((ret_query_list == NULL) || (ret_query_list_len == NULL))
682 query_list = *ret_query_list;
683 query_list_len = *ret_query_list_len;
685 if ((ci->values_num != 1)
686 || (ci->values[0].type != OCONFIG_TYPE_STRING))
688 WARNING ("db query utils: The `Query' block "
689 "needs exactly one string argument.");
693 q = (udb_query_t *) malloc (sizeof (*q));
696 ERROR ("db query utils: malloc failed.");
699 memset (q, 0, sizeof (*q));
701 q->max_version = UINT_MAX;
703 status = udb_config_set_string (&q->name, ci);
710 /* Fill the `udb_query_t' structure.. */
711 for (i = 0; i < ci->children_num; i++)
713 oconfig_item_t *child = ci->children + i;
715 if (strcasecmp ("Statement", child->key) == 0)
716 status = udb_config_set_string (&q->statement, child);
717 else if (strcasecmp ("Result", child->key) == 0)
718 status = udb_result_create (q->name, &q->results, child);
719 else if (strcasecmp ("MinVersion", child->key) == 0)
720 status = udb_config_set_uint (&q->min_version, child);
721 else if (strcasecmp ("MaxVersion", child->key) == 0)
722 status = udb_config_set_uint (&q->max_version, child);
724 /* Call custom callbacks */
727 status = (*cb) (q, child);
730 WARNING ("db query utils: The configuration callback failed "
731 "to handle `%s'.", child->key);
736 WARNING ("db query utils: Query `%s': Option `%s' not allowed here.",
737 q->name, child->key);
745 /* Check that all necessary options have been given. */
748 if (q->statement == NULL)
750 WARNING ("db query utils: Query `%s': No `Statement' given.", q->name);
753 if (q->results == NULL)
755 WARNING ("db query utils: Query `%s': No (valid) `Result' block given.",
759 } /* if (status == 0) */
761 /* If all went well, add this query to the list of queries within the
762 * database structure. */
767 temp = (udb_query_t **) realloc (query_list,
768 sizeof (*query_list) * (query_list_len + 1));
771 ERROR ("db query utils: realloc failed");
777 query_list[query_list_len] = q;
784 udb_query_free_one (q);
788 *ret_query_list = query_list;
789 *ret_query_list_len = query_list_len;
792 } /* }}} int udb_query_create */
794 void udb_query_free (udb_query_t **query_list, size_t query_list_len) /* {{{ */
798 if (query_list == NULL)
801 for (i = 0; i < query_list_len; i++)
802 udb_query_free_one (query_list[i]);
805 } /* }}} void udb_query_free */
807 int udb_query_pick_from_list_by_name (const char *name, /* {{{ */
808 udb_query_t **src_list, size_t src_list_len,
809 udb_query_t ***dst_list, size_t *dst_list_len)
814 if ((name == NULL) || (src_list == NULL) || (dst_list == NULL)
815 || (dst_list_len == NULL))
817 ERROR ("db query utils: udb_query_pick_from_list_by_name: "
818 "Invalid argument.");
823 for (i = 0; i < src_list_len; i++)
825 udb_query_t **tmp_list;
828 if (strcasecmp (name, src_list[i]->name) != 0)
831 tmp_list_len = *dst_list_len;
832 tmp_list = (udb_query_t **) realloc (*dst_list, (tmp_list_len + 1)
833 * sizeof (udb_query_t *));
834 if (tmp_list == NULL)
836 ERROR ("db query utils: realloc failed.");
840 tmp_list[tmp_list_len] = src_list[i];
843 *dst_list = tmp_list;
844 *dst_list_len = tmp_list_len;
847 } /* for (i = 0; i < src_list_len; i++) */
851 ERROR ("db query utils: Cannot find query `%s'. Make sure the <Query> "
852 "block is above the database definition!",
858 DEBUG ("db query utils: Added %i versions of query `%s'.",
863 } /* }}} int udb_query_pick_from_list_by_name */
865 int udb_query_pick_from_list (oconfig_item_t *ci, /* {{{ */
866 udb_query_t **src_list, size_t src_list_len,
867 udb_query_t ***dst_list, size_t *dst_list_len)
871 if ((ci == NULL) || (src_list == NULL) || (dst_list == NULL)
872 || (dst_list_len == NULL))
874 ERROR ("db query utils: udb_query_pick_from_list: "
875 "Invalid argument.");
879 if ((ci->values_num != 1)
880 || (ci->values[0].type != OCONFIG_TYPE_STRING))
882 ERROR ("db query utils: The `%s' config option "
883 "needs exactly one string argument.", ci->key);
886 name = ci->values[0].value.string;
888 return (udb_query_pick_from_list_by_name (name,
889 src_list, src_list_len,
890 dst_list, dst_list_len));
891 } /* }}} int udb_query_pick_from_list */
893 const char *udb_query_get_name (udb_query_t *q) /* {{{ */
899 } /* }}} const char *udb_query_get_name */
901 const char *udb_query_get_statement (udb_query_t *q) /* {{{ */
906 return (q->statement);
907 } /* }}} const char *udb_query_get_statement */
909 void udb_query_set_user_data (udb_query_t *q, void *user_data) /* {{{ */
914 q->user_data = user_data;
915 } /* }}} void udb_query_set_user_data */
917 void *udb_query_get_user_data (udb_query_t *q) /* {{{ */
922 return (q->user_data);
923 } /* }}} void *udb_query_get_user_data */
925 int udb_query_check_version (udb_query_t *q, unsigned int version) /* {{{ */
930 if ((version < q->min_version) || (version > q->max_version))
934 } /* }}} int udb_query_check_version */
936 void udb_query_finish_result (udb_query_t const *q, /* {{{ */
937 udb_query_preparation_area_t *prep_area)
939 udb_result_preparation_area_t *r_area;
942 if ((q == NULL) || (prep_area == NULL))
945 prep_area->column_num = 0;
946 sfree (prep_area->host);
947 sfree (prep_area->plugin);
948 sfree (prep_area->db_name);
950 prep_area->interval = 0;
952 for (r = q->results, r_area = prep_area->result_prep_areas;
953 r != NULL; r = r->next, r_area = r_area->next)
955 /* this may happen during error conditions of the caller */
958 udb_result_finish_result (r, r_area);
960 } /* }}} void udb_query_finish_result */
962 int udb_query_handle_result (udb_query_t const *q, /* {{{ */
963 udb_query_preparation_area_t *prep_area, char **column_values)
965 udb_result_preparation_area_t *r_area;
970 if ((q == NULL) || (prep_area == NULL))
973 if ((prep_area->column_num < 1) || (prep_area->host == NULL)
974 || (prep_area->plugin == NULL) || (prep_area->db_name == NULL))
976 ERROR ("db query utils: Query `%s': Query is not prepared; "
977 "can't handle result.", q->name);
981 #if defined(COLLECT_DEBUG) && COLLECT_DEBUG /* {{{ */
986 for (i = 0; i < prep_area->column_num; i++)
988 DEBUG ("db query utils: udb_query_handle_result (%s, %s): "
990 prep_area->db_name, q->name, i, column_values[i]);
996 for (r = q->results, r_area = prep_area->result_prep_areas;
997 r != NULL; r = r->next, r_area = r_area->next)
999 status = udb_result_handle_result (r, prep_area, r_area,
1007 ERROR ("db query utils: udb_query_handle_result (%s, %s): "
1008 "All results failed.", prep_area->db_name, q->name);
1013 } /* }}} int udb_query_handle_result */
1015 int udb_query_prepare_result (udb_query_t const *q, /* {{{ */
1016 udb_query_preparation_area_t *prep_area,
1017 const char *host, const char *plugin, const char *db_name,
1018 char **column_names, size_t column_num, cdtime_t interval)
1020 udb_result_preparation_area_t *r_area;
1024 if ((q == NULL) || (prep_area == NULL))
1027 udb_query_finish_result (q, prep_area);
1029 prep_area->column_num = column_num;
1030 prep_area->host = strdup (host);
1031 prep_area->plugin = strdup (plugin);
1032 prep_area->db_name = strdup (db_name);
1034 prep_area->interval = interval;
1036 if ((prep_area->host == NULL) || (prep_area->plugin == NULL)
1037 || (prep_area->db_name == NULL))
1039 ERROR ("db query utils: Query `%s': Prepare failed: Out of memory.", q->name);
1040 udb_query_finish_result (q, prep_area);
1044 #if defined(COLLECT_DEBUG) && COLLECT_DEBUG
1049 for (i = 0; i < column_num; i++)
1051 DEBUG ("db query utils: udb_query_prepare_result: "
1052 "query = %s; column[%zu] = %s;",
1053 q->name, i, column_names[i]);
1058 for (r = q->results, r_area = prep_area->result_prep_areas;
1059 r != NULL; r = r->next, r_area = r_area->next)
1063 ERROR ("db query utils: Query `%s': Invalid number of result "
1064 "preparation areas.", q->name);
1065 udb_query_finish_result (q, prep_area);
1069 status = udb_result_prepare_result (r, r_area, column_names, column_num);
1072 udb_query_finish_result (q, prep_area);
1078 } /* }}} int udb_query_prepare_result */
1080 udb_query_preparation_area_t *
1081 udb_query_allocate_preparation_area (udb_query_t *q) /* {{{ */
1083 udb_query_preparation_area_t *q_area;
1084 udb_result_preparation_area_t **next_r_area;
1087 q_area = malloc (sizeof (*q_area));
1090 memset (q_area, 0, sizeof (*q_area));
1092 next_r_area = &q_area->result_prep_areas;
1093 for (r = q->results; r != NULL; r = r->next)
1095 udb_result_preparation_area_t *r_area;
1097 r_area = malloc (sizeof (*r_area));
1100 udb_result_preparation_area_t *a = q_area->result_prep_areas;
1104 udb_result_preparation_area_t *next = a->next;
1113 memset (r_area, 0, sizeof (*r_area));
1115 *next_r_area = r_area;
1116 next_r_area = &r_area->next;
1120 } /* }}} udb_query_preparation_area_t *udb_query_allocate_preparation_area */
1123 udb_query_delete_preparation_area (udb_query_preparation_area_t *q_area) /* {{{ */
1125 udb_result_preparation_area_t *r_area;
1130 r_area = q_area->result_prep_areas;
1131 while (r_area != NULL)
1133 udb_result_preparation_area_t *area = r_area;
1135 r_area = r_area->next;
1137 sfree (area->instances_pos);
1138 sfree (area->values_pos);
1139 sfree (area->instances_buffer);
1140 sfree (area->values_buffer);
1144 sfree (q_area->host);
1145 sfree (q_area->plugin);
1146 sfree (q_area->db_name);
1149 } /* }}} void udb_query_delete_preparation_area */
1151 /* vim: set sw=2 sts=2 et fdm=marker : */