1 /**
2 * collection4 - graph.c
3 * Copyright (C) 2010 Florian octo Forster
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301 USA
19 *
20 * Authors:
21 * Florian octo Forster <ff at octo.it>
22 **/
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <stdint.h>
27 #include <inttypes.h>
28 #include <string.h>
29 #include <time.h>
30 #include <errno.h>
31 #include <assert.h>
33 #include "graph.h"
34 #include "graph_ident.h"
35 #include "graph_instance.h"
36 #include "graph_list.h"
37 #include "graph_def.h"
38 #include "graph_config.h"
39 #include "common.h"
40 #include "filesystem.h"
41 #include "utils_cgi.h"
43 #include <fcgiapp.h>
44 #include <fcgi_stdio.h>
46 /*
47 * Data types
48 */
49 struct graph_config_s /* {{{ */
50 {
51 graph_ident_t *select;
53 char *title;
54 char *vertical_label;
55 _Bool show_zero;
57 graph_def_t *defs;
59 graph_instance_t **instances;
60 size_t instances_num;
61 }; /* }}} struct graph_config_s */
63 /*
64 * Private functions
65 */
67 /*
68 * Config functions
69 */
70 static graph_ident_t *graph_config_get_selector (const oconfig_item_t *ci) /* {{{ */
71 {
72 char *host = NULL;
73 char *plugin = NULL;
74 char *plugin_instance = NULL;
75 char *type = NULL;
76 char *type_instance = NULL;
77 graph_ident_t *ret;
78 int i;
80 for (i = 0; i < ci->children_num; i++)
81 {
82 oconfig_item_t *child;
84 child = ci->children + i;
86 if (strcasecmp ("Host", child->key) == 0)
87 graph_config_get_string (child, &host);
88 else if (strcasecmp ("Plugin", child->key) == 0)
89 graph_config_get_string (child, &plugin);
90 else if (strcasecmp ("PluginInstance", child->key) == 0)
91 graph_config_get_string (child, &plugin_instance);
92 else if (strcasecmp ("Type", child->key) == 0)
93 graph_config_get_string (child, &type);
94 else if (strcasecmp ("TypeInstance", child->key) == 0)
95 graph_config_get_string (child, &type_instance);
96 /* else: ignore all other directives here. */
97 } /* for */
99 ret = ident_create (host, plugin, plugin_instance, type, type_instance);
101 free (host);
102 free (plugin);
103 free (plugin_instance);
104 free (type);
105 free (type_instance);
107 return (ret);
108 } /* }}} int graph_config_get_selector */
110 /*
111 * Global functions
112 */
113 graph_config_t *graph_create (const graph_ident_t *selector) /* {{{ */
114 {
115 graph_config_t *cfg;
117 cfg = malloc (sizeof (*cfg));
118 if (cfg == NULL)
119 return (NULL);
120 memset (cfg, 0, sizeof (*cfg));
122 if (selector != NULL)
123 cfg->select = ident_clone (selector);
124 else
125 cfg->select = NULL;
127 cfg->title = NULL;
128 cfg->vertical_label = NULL;
129 cfg->defs = NULL;
130 cfg->instances = NULL;
132 return (cfg);
133 } /* }}} int graph_create */
135 void graph_destroy (graph_config_t *cfg) /* {{{ */
136 {
137 size_t i;
139 if (cfg == NULL)
140 return;
142 ident_destroy (cfg->select);
144 free (cfg->title);
145 free (cfg->vertical_label);
147 def_destroy (cfg->defs);
149 for (i = 0; i < cfg->instances_num; i++)
150 inst_destroy (cfg->instances[i]);
151 free (cfg->instances);
152 } /* }}} void graph_destroy */
154 int graph_config_add (const oconfig_item_t *ci) /* {{{ */
155 {
156 graph_ident_t *select;
157 graph_config_t *cfg = NULL;
158 int i;
160 select = graph_config_get_selector (ci);
161 if (select == NULL)
162 return (EINVAL);
164 cfg = graph_create (/* selector = */ NULL);
165 if (cfg == NULL)
166 return (ENOMEM);
168 cfg->select = select;
170 for (i = 0; i < ci->children_num; i++)
171 {
172 oconfig_item_t *child;
174 child = ci->children + i;
176 if (strcasecmp ("Title", child->key) == 0)
177 graph_config_get_string (child, &cfg->title);
178 else if (strcasecmp ("VerticalLabel", child->key) == 0)
179 graph_config_get_string (child, &cfg->vertical_label);
180 else if (strcasecmp ("ShowZero", child->key) == 0)
181 graph_config_get_bool (child, &cfg->show_zero);
182 else if (strcasecmp ("DEF", child->key) == 0)
183 def_config (cfg, child);
184 } /* for */
186 gl_add_graph (cfg);
188 return (0);
189 } /* }}} graph_config_add */
191 int graph_add_file (graph_config_t *cfg, const graph_ident_t *file) /* {{{ */
192 {
193 graph_instance_t *inst;
195 inst = graph_inst_find_matching (cfg, file);
196 if (inst == NULL)
197 {
198 graph_instance_t **tmp;
200 tmp = realloc (cfg->instances,
201 sizeof (*cfg->instances) * (cfg->instances_num + 1));
202 if (tmp == NULL)
203 return (ENOMEM);
204 cfg->instances = tmp;
206 inst = inst_create (cfg, file);
207 if (inst == NULL)
208 return (ENOMEM);
210 cfg->instances[cfg->instances_num] = inst;
211 cfg->instances_num++;
212 }
214 return (inst_add_file (inst, file));
215 } /* }}} int graph_add_file */
217 int graph_get_title (graph_config_t *cfg, /* {{{ */
218 char *buffer, size_t buffer_size)
219 {
220 if ((cfg == NULL) || (buffer == NULL) || (buffer_size < 1))
221 return (EINVAL);
223 if (cfg->title == NULL)
224 cfg->title = ident_to_string (cfg->select);
226 if (cfg->title == NULL)
227 return (ENOMEM);
229 strncpy (buffer, cfg->title, buffer_size);
230 buffer[buffer_size - 1] = 0;
232 return (0);
233 } /* }}} int graph_get_title */
235 int graph_get_params (graph_config_t *cfg, /* {{{ */
236 char *buffer, size_t buffer_size)
237 {
238 buffer[0] = 0;
240 #define COPY_FIELD(field) do { \
241 const char *str = ident_get_##field (cfg->select); \
242 char uri_str[1024]; \
243 uri_escape_copy (uri_str, str, sizeof (uri_str)); \
244 strlcat (buffer, #field, buffer_size); \
245 strlcat (buffer, "=", buffer_size); \
246 strlcat (buffer, uri_str, buffer_size); \
247 } while (0)
249 COPY_FIELD(host);
250 strlcat (buffer, ";", buffer_size);
251 COPY_FIELD(plugin);
252 strlcat (buffer, ";", buffer_size);
253 COPY_FIELD(plugin_instance);
254 strlcat (buffer, ";", buffer_size);
255 COPY_FIELD(type);
256 strlcat (buffer, ";", buffer_size);
257 COPY_FIELD(type_instance);
259 #undef COPY_FIELD
261 return (0);
262 } /* }}} int graph_get_params */
264 graph_ident_t *graph_get_selector (graph_config_t *cfg) /* {{{ */
265 {
266 if (cfg == NULL)
267 return (NULL);
269 return (ident_clone (cfg->select));
270 } /* }}} graph_ident_t *graph_get_selector */
272 graph_def_t *graph_get_defs (graph_config_t *cfg) /* {{{ */
273 {
274 if (cfg == NULL)
275 return (NULL);
277 return (cfg->defs);
278 } /* }}} graph_def_t *graph_get_defs */
280 int graph_add_def (graph_config_t *cfg, graph_def_t *def) /* {{{ */
281 {
282 graph_def_t *tmp;
284 if ((cfg == NULL) || (def == NULL))
285 return (EINVAL);
287 if (cfg->defs == NULL)
288 {
289 cfg->defs = def;
290 return (0);
291 }
293 /* Insert in reverse order. This makes the order in the config file and the
294 * order of the DEFs in the graph more natural. Really. */
295 tmp = cfg->defs;
296 cfg->defs = def;
297 return (def_append (cfg->defs, tmp));
298 } /* }}} int graph_add_def */
300 _Bool graph_matches_ident (graph_config_t *cfg, const graph_ident_t *ident) /* {{{ */
301 {
302 #if C4_DEBUG
303 if ((cfg == NULL) || (ident == NULL))
304 return (0);
305 #endif
307 return (ident_matches (cfg->select, ident));
308 } /* }}} _Bool graph_matches_ident */
310 _Bool graph_matches_field (graph_config_t *cfg, /* {{{ */
311 graph_ident_field_t field, const char *field_value)
312 {
313 const char *selector_value;
315 if ((cfg == NULL) || (field_value == NULL))
316 return (0);
318 selector_value = ident_get_field (cfg->select, field);
319 if (selector_value == NULL)
320 return (0);
322 if (IS_ALL (selector_value) || IS_ANY (selector_value))
323 return (1);
324 else if (strcasecmp (selector_value, field_value) == 0)
325 return (1);
327 return (0);
328 } /* }}} _Bool graph_matches_field */
330 int graph_inst_foreach (graph_config_t *cfg, /* {{{ */
331 inst_callback_t cb, void *user_data)
332 {
333 size_t i;
334 int status;
336 for (i = 0; i < cfg->instances_num; i++)
337 {
338 status = (*cb) (cfg->instances[i], user_data);
339 if (status != 0)
340 return (status);
341 }
343 return (0);
344 } /* }}} int graph_inst_foreach */
346 graph_instance_t *graph_inst_find_exact (graph_config_t *cfg, /* {{{ */
347 graph_ident_t *ident)
348 {
349 size_t i;
351 if ((cfg == NULL) || (ident == NULL))
352 return (NULL);
354 for (i = 0; i < cfg->instances_num; i++)
355 if (inst_compare_ident (cfg->instances[i], ident) == 0)
356 return (cfg->instances[i]);
358 return (NULL);
359 } /* }}} graph_instance_t *graph_inst_find_exact */
361 graph_instance_t *graph_inst_find_matching (graph_config_t *cfg, /* {{{ */
362 const graph_ident_t *ident)
363 {
364 size_t i;
366 if ((cfg == NULL) || (ident == NULL))
367 return (NULL);
369 for (i = 0; i < cfg->instances_num; i++)
370 if (inst_ident_matches (cfg->instances[i], ident))
371 return (cfg->instances[i]);
373 return (NULL);
374 } /* }}} graph_instance_t *graph_inst_find_matching */
376 int graph_inst_find_all_matching (graph_config_t *cfg, /* {{{ */
377 const graph_ident_t *ident,
378 graph_inst_callback_t callback, void *user_data)
379 {
380 size_t i;
382 if ((cfg == NULL) || (ident == NULL) || (callback == NULL))
383 return (EINVAL);
385 for (i = 0; i < cfg->instances_num; i++)
386 {
387 int status;
389 if (!inst_matches_ident (cfg->instances[i], ident))
390 continue;
392 status = (*callback) (cfg, cfg->instances[i], user_data);
393 if (status != 0)
394 return (status);
395 }
397 return (0);
398 } /* }}} int graph_inst_find_all_matching */
400 int graph_inst_search (graph_config_t *cfg, const char *term, /* {{{ */
401 graph_inst_callback_t cb,
402 void *user_data)
403 {
404 char buffer[1024];
405 int status;
406 size_t i;
408 status = graph_get_title (cfg, buffer, sizeof (buffer));
409 if (status != 0)
410 {
411 fprintf (stderr, "graph_inst_search: graph_get_title failed\n");
412 return (status);
413 }
415 strtolower (buffer);
417 if (strstr (buffer, term) != NULL)
418 {
419 for (i = 0; i < cfg->instances_num; i++)
420 {
421 status = (*cb) (cfg, cfg->instances[i], user_data);
422 if (status != 0)
423 return (status);
424 }
425 }
426 else
427 {
428 for (i = 0; i < cfg->instances_num; i++)
429 {
430 if (inst_matches_string (cfg, cfg->instances[i], term))
431 {
432 status = (*cb) (cfg, cfg->instances[i], user_data);
433 if (status != 0)
434 return (status);
435 }
436 }
437 }
439 return (0);
440 } /* }}} int graph_inst_search */
442 int graph_inst_search_field (graph_config_t *cfg, /* {{{ */
443 graph_ident_field_t field, const char *field_value,
444 graph_inst_callback_t callback, void *user_data)
445 {
446 size_t i;
447 const char *selector_field;
448 _Bool need_check_instances = 0;
450 if ((cfg == NULL) || (field_value == NULL) || (callback == NULL))
451 return (EINVAL);
453 if (!graph_matches_field (cfg, field, field_value))
454 return (0);
456 selector_field = ident_get_field (cfg->select, field);
457 if (selector_field == NULL)
458 return (-1);
460 if (IS_ALL (selector_field) || IS_ANY (selector_field))
461 need_check_instances = 1;
463 for (i = 0; i < cfg->instances_num; i++)
464 {
465 int status;
467 if (need_check_instances
468 && !inst_matches_field (cfg->instances[i], field, field_value))
469 continue;
471 status = (*callback) (cfg, cfg->instances[i], user_data);
472 if (status != 0)
473 return (status);
474 }
476 return (0);
477 } /* }}} int graph_inst_search_field */
479 int graph_compare (graph_config_t *cfg, const graph_ident_t *ident) /* {{{ */
480 {
481 if ((cfg == NULL) || (ident == NULL))
482 return (0);
484 return (ident_compare (cfg->select, ident));
485 } /* }}} int graph_compare */
487 int graph_sort_instances (graph_config_t *cfg) /* {{{ */
488 {
489 if (cfg == NULL)
490 return (EINVAL);
492 if (cfg->instances_num < 2)
493 return (0);
495 qsort (cfg->instances, cfg->instances_num, sizeof (*cfg->instances),
496 (void *) ident_compare);
498 return (0);
499 } /* }}} int graph_sort_instances */
501 int graph_clear_instances (graph_config_t *cfg) /* {{{ */
502 {
503 size_t i;
505 if (cfg == NULL)
506 return (EINVAL);
508 for (i = 0; i < cfg->instances_num; i++)
509 inst_destroy (cfg->instances[i]);
510 free (cfg->instances);
511 cfg->instances = NULL;
512 cfg->instances_num = 0;
514 return (0);
515 } /* }}} int graph_clear_instances */
517 int graph_get_rrdargs (graph_config_t *cfg, graph_instance_t *inst, /* {{{ */
518 rrd_args_t *args)
519 {
520 if ((cfg == NULL) || (inst == NULL) || (args == NULL))
521 return (EINVAL);
523 if (cfg->title != NULL)
524 {
525 array_append (args->options, "-t");
526 array_append (args->options, cfg->title);
527 }
529 if (cfg->vertical_label != NULL)
530 {
531 array_append (args->options, "-v");
532 array_append (args->options, cfg->vertical_label);
533 }
535 if (cfg->show_zero)
536 {
537 array_append (args->options, "-l");
538 array_append (args->options, "0");
539 }
541 return (0);
542 } /* }}} int graph_get_rrdargs */
544 /* vim: set sw=2 sts=2 et fdm=marker : */