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);
206 vl.values = (value_t *) calloc (r_area->ds->ds_num, sizeof (value_t));
207 if (vl.values == NULL)
209 ERROR ("db query utils: malloc failed.");
212 vl.values_len = r_area->ds->ds_num;
214 for (i = 0; i < r->values_num; i++)
216 char *value_str = r_area->values_buffer[i];
218 if (0 != parse_value (value_str, &vl.values[i], r_area->ds->ds[i].type))
220 ERROR ("db query utils: udb_result_submit: Parsing `%s' as %s failed.",
221 value_str, DS_TYPE_TO_STRING (r_area->ds->ds[i].type));
227 if (q_area->interval > 0)
228 vl.interval = q_area->interval;
230 sstrncpy (vl.host, q_area->host, sizeof (vl.host));
231 sstrncpy (vl.plugin, q_area->plugin, sizeof (vl.plugin));
232 sstrncpy (vl.plugin_instance, q_area->db_name, sizeof (vl.plugin_instance));
233 sstrncpy (vl.type, r->type, sizeof (vl.type));
235 /* Set vl.type_instance {{{ */
236 if (r->instances_num <= 0)
238 if (r->instance_prefix == NULL)
239 vl.type_instance[0] = 0;
241 sstrncpy (vl.type_instance, r->instance_prefix,
242 sizeof (vl.type_instance));
244 else /* if ((r->instances_num > 0) */
246 if (r->instance_prefix == NULL)
248 strjoin (vl.type_instance, sizeof (vl.type_instance),
249 r_area->instances_buffer, r->instances_num, "-");
253 char tmp[DATA_MAX_NAME_LEN];
255 strjoin (tmp, sizeof (tmp), r_area->instances_buffer,
256 r->instances_num, "-");
257 tmp[sizeof (tmp) - 1] = 0;
259 snprintf (vl.type_instance, sizeof (vl.type_instance), "%s-%s",
260 r->instance_prefix, tmp);
263 vl.type_instance[sizeof (vl.type_instance) - 1] = 0;
266 /* Annotate meta data. {{{ */
267 if (r->metadata_num > 0)
269 vl.meta = meta_data_create ();
272 ERROR ("db query utils:: meta_data_create failed.");
276 for (i = 0; i < r->metadata_num; i++)
278 status = meta_data_add_string (vl.meta, r->metadata[i],
279 r_area->metadata_buffer[i]);
282 ERROR ("db query utils:: meta_data_add_string failed.");
283 meta_data_destroy (vl.meta);
291 plugin_dispatch_values (&vl);
293 if (r->metadata_num > 0)
295 meta_data_destroy (vl.meta);
300 } /* }}} void udb_result_submit */
302 static void udb_result_finish_result (udb_result_t const *r, /* {{{ */
303 udb_result_preparation_area_t *prep_area)
305 if ((r == NULL) || (prep_area == NULL))
308 prep_area->ds = NULL;
309 sfree (prep_area->instances_pos);
310 sfree (prep_area->values_pos);
311 sfree (prep_area->metadata_pos);
312 sfree (prep_area->instances_buffer);
313 sfree (prep_area->values_buffer);
314 sfree (prep_area->metadata_buffer);
315 } /* }}} void udb_result_finish_result */
317 static int udb_result_handle_result (udb_result_t *r, /* {{{ */
318 udb_query_preparation_area_t *q_area,
319 udb_result_preparation_area_t *r_area,
320 udb_query_t const *q, char **column_values)
324 assert (r && q_area && r_area);
326 for (i = 0; i < r->instances_num; i++)
327 r_area->instances_buffer[i] = column_values[r_area->instances_pos[i]];
329 for (i = 0; i < r->values_num; i++)
330 r_area->values_buffer[i] = column_values[r_area->values_pos[i]];
332 for (i = 0; i < r->metadata_num; i++)
333 r_area->metadata_buffer[i] = column_values[r_area->metadata_pos[i]];
335 return udb_result_submit (r, r_area, q, q_area);
336 } /* }}} int udb_result_handle_result */
338 static int udb_result_prepare_result (udb_result_t const *r, /* {{{ */
339 udb_result_preparation_area_t *prep_area,
340 char **column_names, size_t column_num)
344 if ((r == NULL) || (prep_area == NULL))
347 #define BAIL_OUT(status) \
348 prep_area->ds = NULL; \
349 sfree (prep_area->instances_pos); \
350 sfree (prep_area->values_pos); \
351 sfree (prep_area->metadata_pos); \
352 sfree (prep_area->instances_buffer); \
353 sfree (prep_area->values_buffer); \
354 sfree (prep_area->metadata_buffer); \
357 /* Make sure previous preparations are cleaned up. */
358 udb_result_finish_result (r, prep_area);
359 prep_area->instances_pos = NULL;
360 prep_area->values_pos = NULL;
361 prep_area->metadata_pos = NULL;
363 /* Read `ds' and check number of values {{{ */
364 prep_area->ds = plugin_get_ds (r->type);
365 if (prep_area->ds == NULL)
367 ERROR ("db query utils: udb_result_prepare_result: Type `%s' is not "
368 "known by the daemon. See types.db(5) for details.",
373 if (((size_t) prep_area->ds->ds_num) != r->values_num)
375 ERROR ("db query utils: udb_result_prepare_result: The type `%s' "
376 "requires exactly %i value%s, but the configuration specifies %zu.",
378 prep_area->ds->ds_num, (prep_area->ds->ds_num == 1) ? "" : "s",
384 /* Allocate r->instances_pos, r->values_pos, r->metadata_post,
385 * r->instances_buffer, r->values_buffer, and r->metadata_buffer {{{ */
386 if (r->instances_num > 0)
388 prep_area->instances_pos
389 = (size_t *) calloc (r->instances_num, sizeof (size_t));
390 if (prep_area->instances_pos == NULL)
392 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
396 prep_area->instances_buffer
397 = (char **) calloc (r->instances_num, sizeof (char *));
398 if (prep_area->instances_buffer == NULL)
400 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
403 } /* if (r->instances_num > 0) */
405 prep_area->values_pos
406 = (size_t *) calloc (r->values_num, sizeof (size_t));
407 if (prep_area->values_pos == NULL)
409 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
413 prep_area->values_buffer
414 = (char **) calloc (r->values_num, sizeof (char *));
415 if (prep_area->values_buffer == NULL)
417 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
421 prep_area->metadata_pos
422 = (size_t *) calloc (r->metadata_num, sizeof (size_t));
423 if (prep_area->metadata_pos == NULL)
425 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
429 prep_area->metadata_buffer
430 = (char **) calloc (r->metadata_num, sizeof (char *));
431 if (prep_area->metadata_buffer == NULL)
433 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
439 /* Determine the position of the instance columns {{{ */
440 for (i = 0; i < r->instances_num; i++)
444 for (j = 0; j < column_num; j++)
446 if (strcasecmp (r->instances[i], column_names[j]) == 0)
448 prep_area->instances_pos[i] = j;
455 ERROR ("db query utils: udb_result_prepare_result: "
456 "Column `%s' could not be found.",
460 } /* }}} for (i = 0; i < r->instances_num; i++) */
462 /* Determine the position of the value columns {{{ */
463 for (i = 0; i < r->values_num; i++)
467 for (j = 0; j < column_num; j++)
469 if (strcasecmp (r->values[i], column_names[j]) == 0)
471 prep_area->values_pos[i] = j;
478 ERROR ("db query utils: udb_result_prepare_result: "
479 "Column `%s' could not be found.",
483 } /* }}} for (i = 0; i < r->values_num; i++) */
485 /* Determine the position of the metadata columns {{{ */
486 for (i = 0; i < r->metadata_num; i++)
490 for (j = 0; j < column_num; j++)
492 if (strcasecmp (r->metadata[i], column_names[j]) == 0)
494 prep_area->metadata_pos[i] = j;
501 ERROR ("db query utils: udb_result_prepare_result: "
502 "Metadata column `%s' could not be found.",
506 } /* }}} for (i = 0; i < r->metadata_num; i++) */
510 } /* }}} int udb_result_prepare_result */
512 static void udb_result_free (udb_result_t *r) /* {{{ */
521 for (i = 0; i < r->instances_num; i++)
522 sfree (r->instances[i]);
523 sfree (r->instances);
525 for (i = 0; i < r->values_num; i++)
526 sfree (r->values[i]);
529 for (i = 0; i < r->metadata_num; i++)
530 sfree (r->metadata[i]);
533 udb_result_free (r->next);
536 } /* }}} void udb_result_free */
538 static int udb_result_create (const char *query_name, /* {{{ */
539 udb_result_t **r_head, oconfig_item_t *ci)
545 if (ci->values_num != 0)
547 WARNING ("db query utils: The `Result' block doesn't accept "
548 "any arguments. Ignoring %i argument%s.",
549 ci->values_num, (ci->values_num == 1) ? "" : "s");
552 r = (udb_result_t *) malloc (sizeof (*r));
555 ERROR ("db query utils: malloc failed.");
558 memset (r, 0, sizeof (*r));
560 r->instance_prefix = NULL;
566 /* Fill the `udb_result_t' structure.. */
568 for (i = 0; i < ci->children_num; i++)
570 oconfig_item_t *child = ci->children + i;
572 if (strcasecmp ("Type", child->key) == 0)
573 status = udb_config_set_string (&r->type, child);
574 else if (strcasecmp ("InstancePrefix", child->key) == 0)
575 status = udb_config_set_string (&r->instance_prefix, child);
576 else if (strcasecmp ("InstancesFrom", child->key) == 0)
577 status = udb_config_add_string (&r->instances, &r->instances_num, child);
578 else if (strcasecmp ("ValuesFrom", child->key) == 0)
579 status = udb_config_add_string (&r->values, &r->values_num, child);
580 else if (strcasecmp ("MetadataFrom", child->key) == 0)
581 status = udb_config_add_string (&r->metadata, &r->metadata_num, child);
584 WARNING ("db query utils: Query `%s': Option `%s' not allowed here.",
585 query_name, child->key);
593 /* Check that all necessary options have been given. */
598 WARNING ("db query utils: `Type' not given for "
599 "result in query `%s'", query_name);
602 if (r->values == NULL)
604 WARNING ("db query utils: `ValuesFrom' not given for "
605 "result in query `%s'", query_name);
610 } /* while (status == 0) */
618 /* If all went well, add this result to the list of results. */
628 while (last->next != NULL)
635 } /* }}} int udb_result_create */
638 * Query private functions
640 void udb_query_free_one (udb_query_t *q) /* {{{ */
646 sfree (q->statement);
648 udb_result_free (q->results);
651 } /* }}} void udb_query_free_one */
654 * Query public functions
656 int udb_query_create (udb_query_t ***ret_query_list, /* {{{ */
657 size_t *ret_query_list_len, oconfig_item_t *ci,
658 udb_query_create_callback_t cb)
660 udb_query_t **query_list;
661 size_t query_list_len;
667 if ((ret_query_list == NULL) || (ret_query_list_len == NULL))
669 query_list = *ret_query_list;
670 query_list_len = *ret_query_list_len;
672 if ((ci->values_num != 1)
673 || (ci->values[0].type != OCONFIG_TYPE_STRING))
675 WARNING ("db query utils: The `Query' block "
676 "needs exactly one string argument.");
680 q = (udb_query_t *) malloc (sizeof (*q));
683 ERROR ("db query utils: malloc failed.");
686 memset (q, 0, sizeof (*q));
688 q->max_version = UINT_MAX;
690 status = udb_config_set_string (&q->name, ci);
697 /* Fill the `udb_query_t' structure.. */
698 for (i = 0; i < ci->children_num; i++)
700 oconfig_item_t *child = ci->children + i;
702 if (strcasecmp ("Statement", child->key) == 0)
703 status = udb_config_set_string (&q->statement, child);
704 else if (strcasecmp ("Result", child->key) == 0)
705 status = udb_result_create (q->name, &q->results, child);
706 else if (strcasecmp ("MinVersion", child->key) == 0)
707 status = udb_config_set_uint (&q->min_version, child);
708 else if (strcasecmp ("MaxVersion", child->key) == 0)
709 status = udb_config_set_uint (&q->max_version, child);
711 /* Call custom callbacks */
714 status = (*cb) (q, child);
717 WARNING ("db query utils: The configuration callback failed "
718 "to handle `%s'.", child->key);
723 WARNING ("db query utils: Query `%s': Option `%s' not allowed here.",
724 q->name, child->key);
732 /* Check that all necessary options have been given. */
735 if (q->statement == NULL)
737 WARNING ("db query utils: Query `%s': No `Statement' given.", q->name);
740 if (q->results == NULL)
742 WARNING ("db query utils: Query `%s': No (valid) `Result' block given.",
746 } /* if (status == 0) */
748 /* If all went well, add this query to the list of queries within the
749 * database structure. */
754 temp = (udb_query_t **) realloc (query_list,
755 sizeof (*query_list) * (query_list_len + 1));
758 ERROR ("db query utils: realloc failed");
764 query_list[query_list_len] = q;
771 udb_query_free_one (q);
775 *ret_query_list = query_list;
776 *ret_query_list_len = query_list_len;
779 } /* }}} int udb_query_create */
781 void udb_query_free (udb_query_t **query_list, size_t query_list_len) /* {{{ */
785 if (query_list == NULL)
788 for (i = 0; i < query_list_len; i++)
789 udb_query_free_one (query_list[i]);
792 } /* }}} void udb_query_free */
794 int udb_query_pick_from_list_by_name (const char *name, /* {{{ */
795 udb_query_t **src_list, size_t src_list_len,
796 udb_query_t ***dst_list, size_t *dst_list_len)
801 if ((name == NULL) || (src_list == NULL) || (dst_list == NULL)
802 || (dst_list_len == NULL))
804 ERROR ("db query utils: udb_query_pick_from_list_by_name: "
805 "Invalid argument.");
810 for (i = 0; i < src_list_len; i++)
812 udb_query_t **tmp_list;
815 if (strcasecmp (name, src_list[i]->name) != 0)
818 tmp_list_len = *dst_list_len;
819 tmp_list = (udb_query_t **) realloc (*dst_list, (tmp_list_len + 1)
820 * sizeof (udb_query_t *));
821 if (tmp_list == NULL)
823 ERROR ("db query utils: realloc failed.");
827 tmp_list[tmp_list_len] = src_list[i];
830 *dst_list = tmp_list;
831 *dst_list_len = tmp_list_len;
834 } /* for (i = 0; i < src_list_len; i++) */
838 ERROR ("db query utils: Cannot find query `%s'. Make sure the <Query> "
839 "block is above the database definition!",
845 DEBUG ("db query utils: Added %i versions of query `%s'.",
850 } /* }}} int udb_query_pick_from_list_by_name */
852 int udb_query_pick_from_list (oconfig_item_t *ci, /* {{{ */
853 udb_query_t **src_list, size_t src_list_len,
854 udb_query_t ***dst_list, size_t *dst_list_len)
858 if ((ci == NULL) || (src_list == NULL) || (dst_list == NULL)
859 || (dst_list_len == NULL))
861 ERROR ("db query utils: udb_query_pick_from_list: "
862 "Invalid argument.");
866 if ((ci->values_num != 1)
867 || (ci->values[0].type != OCONFIG_TYPE_STRING))
869 ERROR ("db query utils: The `%s' config option "
870 "needs exactly one string argument.", ci->key);
873 name = ci->values[0].value.string;
875 return (udb_query_pick_from_list_by_name (name,
876 src_list, src_list_len,
877 dst_list, dst_list_len));
878 } /* }}} int udb_query_pick_from_list */
880 const char *udb_query_get_name (udb_query_t *q) /* {{{ */
886 } /* }}} const char *udb_query_get_name */
888 const char *udb_query_get_statement (udb_query_t *q) /* {{{ */
893 return (q->statement);
894 } /* }}} const char *udb_query_get_statement */
896 void udb_query_set_user_data (udb_query_t *q, void *user_data) /* {{{ */
901 q->user_data = user_data;
902 } /* }}} void udb_query_set_user_data */
904 void *udb_query_get_user_data (udb_query_t *q) /* {{{ */
909 return (q->user_data);
910 } /* }}} void *udb_query_get_user_data */
912 int udb_query_check_version (udb_query_t *q, unsigned int version) /* {{{ */
917 if ((version < q->min_version) || (version > q->max_version))
921 } /* }}} int udb_query_check_version */
923 void udb_query_finish_result (udb_query_t const *q, /* {{{ */
924 udb_query_preparation_area_t *prep_area)
926 udb_result_preparation_area_t *r_area;
929 if ((q == NULL) || (prep_area == NULL))
932 prep_area->column_num = 0;
933 sfree (prep_area->host);
934 sfree (prep_area->plugin);
935 sfree (prep_area->db_name);
937 prep_area->interval = 0;
939 for (r = q->results, r_area = prep_area->result_prep_areas;
940 r != NULL; r = r->next, r_area = r_area->next)
942 /* this may happen during error conditions of the caller */
945 udb_result_finish_result (r, r_area);
947 } /* }}} void udb_query_finish_result */
949 int udb_query_handle_result (udb_query_t const *q, /* {{{ */
950 udb_query_preparation_area_t *prep_area, char **column_values)
952 udb_result_preparation_area_t *r_area;
957 if ((q == NULL) || (prep_area == NULL))
960 if ((prep_area->column_num < 1) || (prep_area->host == NULL)
961 || (prep_area->plugin == NULL) || (prep_area->db_name == NULL))
963 ERROR ("db query utils: Query `%s': Query is not prepared; "
964 "can't handle result.", q->name);
968 #if defined(COLLECT_DEBUG) && COLLECT_DEBUG /* {{{ */
973 for (i = 0; i < prep_area->column_num; i++)
975 DEBUG ("db query utils: udb_query_handle_result (%s, %s): "
977 prep_area->db_name, q->name, i, column_values[i]);
983 for (r = q->results, r_area = prep_area->result_prep_areas;
984 r != NULL; r = r->next, r_area = r_area->next)
986 status = udb_result_handle_result (r, prep_area, r_area,
994 ERROR ("db query utils: udb_query_handle_result (%s, %s): "
995 "All results failed.", prep_area->db_name, q->name);
1000 } /* }}} int udb_query_handle_result */
1002 int udb_query_prepare_result (udb_query_t const *q, /* {{{ */
1003 udb_query_preparation_area_t *prep_area,
1004 const char *host, const char *plugin, const char *db_name,
1005 char **column_names, size_t column_num, cdtime_t interval)
1007 udb_result_preparation_area_t *r_area;
1011 if ((q == NULL) || (prep_area == NULL))
1014 udb_query_finish_result (q, prep_area);
1016 prep_area->column_num = column_num;
1017 prep_area->host = strdup (host);
1018 prep_area->plugin = strdup (plugin);
1019 prep_area->db_name = strdup (db_name);
1021 prep_area->interval = interval;
1023 if ((prep_area->host == NULL) || (prep_area->plugin == NULL)
1024 || (prep_area->db_name == NULL))
1026 ERROR ("db query utils: Query `%s': Prepare failed: Out of memory.", q->name);
1027 udb_query_finish_result (q, prep_area);
1031 #if defined(COLLECT_DEBUG) && COLLECT_DEBUG
1036 for (i = 0; i < column_num; i++)
1038 DEBUG ("db query utils: udb_query_prepare_result: "
1039 "query = %s; column[%zu] = %s;",
1040 q->name, i, column_names[i]);
1045 for (r = q->results, r_area = prep_area->result_prep_areas;
1046 r != NULL; r = r->next, r_area = r_area->next)
1050 ERROR ("db query utils: Query `%s': Invalid number of result "
1051 "preparation areas.", q->name);
1052 udb_query_finish_result (q, prep_area);
1056 status = udb_result_prepare_result (r, r_area, column_names, column_num);
1059 udb_query_finish_result (q, prep_area);
1065 } /* }}} int udb_query_prepare_result */
1067 udb_query_preparation_area_t *
1068 udb_query_allocate_preparation_area (udb_query_t *q) /* {{{ */
1070 udb_query_preparation_area_t *q_area;
1071 udb_result_preparation_area_t **next_r_area;
1074 q_area = (udb_query_preparation_area_t *)malloc (sizeof (*q_area));
1078 memset (q_area, 0, sizeof (*q_area));
1080 next_r_area = &q_area->result_prep_areas;
1081 for (r = q->results; r != NULL; r = r->next)
1083 udb_result_preparation_area_t *r_area;
1085 r_area = (udb_result_preparation_area_t *)malloc (sizeof (*r_area));
1088 for (r_area = q_area->result_prep_areas;
1089 r_area != NULL; r_area = r_area->next)
1097 memset (r_area, 0, sizeof (*r_area));
1099 *next_r_area = r_area;
1100 next_r_area = &r_area->next;
1104 } /* }}} udb_query_preparation_area_t *udb_query_allocate_preparation_area */
1107 udb_query_delete_preparation_area (udb_query_preparation_area_t *q_area) /* {{{ */
1109 udb_result_preparation_area_t *r_area;
1114 r_area = q_area->result_prep_areas;
1115 while (r_area != NULL)
1117 udb_result_preparation_area_t *area = r_area;
1119 r_area = r_area->next;
1121 sfree (area->instances_pos);
1122 sfree (area->values_pos);
1123 sfree (area->instances_buffer);
1124 sfree (area->values_buffer);
1128 sfree (q_area->host);
1129 sfree (q_area->plugin);
1130 sfree (q_area->db_name);
1133 } /* }}} void udb_query_delete_preparation_area */
1135 /* vim: set sw=2 sts=2 et fdm=marker : */