1 #include <stdlib.h>
2 #include <string.h>
3 #include <errno.h>
4 #include <time.h>
5 #include <assert.h>
7 #include "graph_instance.h"
8 #include "graph.h"
9 #include "graph_def.h"
10 #include "graph_ident.h"
11 #include "graph_list.h"
12 #include "common.h"
13 #include "utils_cgi.h"
15 #include <fcgiapp.h>
16 #include <fcgi_stdio.h>
18 struct graph_instance_s /* {{{ */
19 {
20 graph_ident_t *select;
22 graph_ident_t **files;
23 size_t files_num;
24 }; /* }}} struct graph_instance_s */
26 struct def_callback_data_s
27 {
28 graph_instance_t *inst;
29 str_array_t *args;
30 };
31 typedef struct def_callback_data_s def_callback_data_t;
33 /*
34 * Private functions
35 */
36 /* Create one DEF for each data source in the file. Called by
37 * "inst_get_default_defs" for each file. */
38 static graph_def_t *ident_get_default_defs (graph_config_t *cfg, /* {{{ */
39 graph_ident_t *ident, graph_def_t *def_head)
40 {
41 graph_def_t *defs = NULL;
42 char *file;
43 char **dses = NULL;
44 size_t dses_num = 0;
45 int status;
46 size_t i;
48 if ((cfg == NULL) || (ident == NULL))
49 return (def_head);
51 file = ident_to_file (ident);
52 if (file == NULL)
53 {
54 fprintf (stderr, "ident_get_default_defs: ident_to_file failed\n");
55 return (def_head);
56 }
58 status = ds_list_from_rrd_file (file, &dses_num, &dses);
59 if (status != 0)
60 {
61 free (file);
62 return (def_head);
63 }
65 for (i = 0; i < dses_num; i++)
66 {
67 graph_def_t *def;
69 def = def_search (def_head, ident, dses[i]);
70 if (def != NULL)
71 continue;
73 def = def_create (cfg, ident, dses[i]);
74 if (def == NULL)
75 continue;
77 if (defs == NULL)
78 defs = def;
79 else
80 def_append (defs, def);
82 free (dses[i]);
83 }
85 free (dses);
86 free (file);
88 return (defs);
89 } /* }}} int ident_get_default_defs */
91 /* Create one or more DEFs for each file in the graph instance. The number
92 * depends on the number of data sources in each of the files. Called from
93 * "inst_get_rrdargs" if no DEFs are available from the configuration.
94 * */
95 static graph_def_t *inst_get_default_defs (graph_config_t *cfg, /* {{{ */
96 graph_instance_t *inst)
97 {
98 graph_def_t *defs = NULL;
99 size_t i;
101 if ((cfg == NULL) || (inst == NULL))
102 return (NULL);
104 for (i = 0; i < inst->files_num; i++)
105 {
106 graph_def_t *def;
108 def = ident_get_default_defs (cfg, inst->files[i], defs);
109 if (def == NULL)
110 continue;
112 if (defs == NULL)
113 defs = def;
114 else
115 def_append (defs, def);
116 }
118 return (defs);
119 } /* }}} graph_def_t *inst_get_default_defs */
121 /* Called with each DEF in turn. Calls "def_get_rrdargs" with every appropriate
122 * file / DEF pair. */
123 static int gl_instance_get_rrdargs_cb (graph_def_t *def, void *user_data) /* {{{ */
124 {
125 def_callback_data_t *data = user_data;
126 graph_instance_t *inst = data->inst;
127 str_array_t *args = data->args;
129 size_t i;
131 for (i = 0; i < inst->files_num; i++)
132 {
133 if (!def_matches (def, inst->files[i]))
134 continue;
136 def_get_rrdargs (def, inst->files[i], args);
137 }
139 return (0);
140 } /* }}} int gl_instance_get_rrdargs_cb */
142 static const char *get_part_from_param (const char *prim_key, /* {{{ */
143 const char *sec_key)
144 {
145 const char *val;
147 val = param (prim_key);
148 if (val != NULL)
149 return (val);
151 return (param (sec_key));
152 } /* }}} const char *get_part_from_param */
154 /*
155 * Public functions
156 */
157 graph_instance_t *inst_create (graph_config_t *cfg, /* {{{ */
158 const graph_ident_t *ident)
159 {
160 graph_instance_t *i;
161 graph_ident_t *selector;
163 if ((cfg == NULL) || (ident == NULL))
164 return (NULL);
166 i = malloc (sizeof (*i));
167 if (i == NULL)
168 return (NULL);
169 memset (i, 0, sizeof (*i));
171 selector = graph_get_selector (cfg);
172 if (selector == NULL)
173 {
174 fprintf (stderr, "inst_create: graph_get_selector failed\n");
175 free (i);
176 return (NULL);
177 }
179 i->select = ident_copy_with_selector (selector, ident,
180 IDENT_FLAG_REPLACE_ANY);
181 if (i->select == NULL)
182 {
183 fprintf (stderr, "inst_create: ident_copy_with_selector failed\n");
184 ident_destroy (selector);
185 free (i);
186 return (NULL);
187 }
189 ident_destroy (selector);
191 i->files = NULL;
192 i->files_num = 0;
194 return (i);
195 } /* }}} graph_instance_t *inst_create */
197 void inst_destroy (graph_instance_t *inst) /* {{{ */
198 {
199 size_t i;
201 if (inst == NULL)
202 return;
204 ident_destroy (inst->select);
206 for (i = 0; i < inst->files_num; i++)
207 ident_destroy (inst->files[i]);
208 free (inst->files);
210 free (inst);
211 } /* }}} void inst_destroy */
213 int inst_add_file (graph_instance_t *inst, /* {{{ */
214 const graph_ident_t *file)
215 {
216 graph_ident_t **tmp;
218 tmp = realloc (inst->files, sizeof (*inst->files) * (inst->files_num + 1));
219 if (tmp == NULL)
220 return (ENOMEM);
221 inst->files = tmp;
223 inst->files[inst->files_num] = ident_clone (file);
224 if (inst->files[inst->files_num] == NULL)
225 return (ENOMEM);
227 inst->files_num++;
229 return (0);
230 } /* }}} int inst_add_file */
232 graph_instance_t *inst_get_selected (graph_config_t *cfg) /* {{{ */
233 {
234 const char *host = get_part_from_param ("inst_host", "host");
235 const char *plugin = get_part_from_param ("inst_plugin", "plugin");
236 const char *plugin_instance = get_part_from_param ("inst_plugin_instance",
237 "plugin_instance");
238 const char *type = get_part_from_param ("inst_type", "type");
239 const char *type_instance = get_part_from_param ("inst_type_instance",
240 "type_instance");
242 graph_ident_t *ident;
243 graph_instance_t *inst;
245 if (cfg == NULL)
246 cfg = gl_graph_get_selected ();
248 if (cfg == NULL)
249 {
250 DEBUG ("inst_get_selected: cfg == NULL;\n");
251 return (NULL);
252 }
254 if ((host == NULL)
255 || (plugin == NULL) || (plugin_instance == NULL)
256 || (type == NULL) || (type_instance == NULL))
257 {
258 DEBUG ("inst_get_selected: A parameter is NULL.\n");
259 return (NULL);
260 }
262 ident = ident_create (host, plugin, plugin_instance, type, type_instance);
263 if (ident == NULL)
264 {
265 fprintf (stderr, "inst_get_selected: ident_create failed\n");
266 return (NULL);
267 }
269 inst = graph_inst_find_exact (cfg, ident);
270 ident_destroy (ident);
272 return (inst);
273 } /* }}} graph_instance_t *inst_get_selected */
275 int inst_get_rrdargs (graph_config_t *cfg, /* {{{ */
276 graph_instance_t *inst,
277 str_array_t *args)
278 {
279 def_callback_data_t data = { inst, args };
280 graph_def_t *defs;
281 int status;
283 if ((cfg == NULL) || (inst == NULL) || (args == NULL))
284 return (EINVAL);
286 status = graph_get_rrdargs (cfg, inst, args);
287 if (status != 0)
288 return (status);
290 defs = graph_get_defs (cfg);
291 if (defs == NULL)
292 {
293 defs = inst_get_default_defs (cfg, inst);
295 if (defs == NULL)
296 return (-1);
298 status = def_foreach (defs, gl_instance_get_rrdargs_cb, &data);
300 def_destroy (defs);
301 }
302 else
303 {
304 status = def_foreach (defs, gl_instance_get_rrdargs_cb, &data);
305 }
307 return (status);
308 } /* }}} int inst_get_rrdargs */
310 graph_ident_t *inst_get_selector (graph_instance_t *inst) /* {{{ */
311 {
312 if (inst == NULL)
313 return (NULL);
315 return (ident_clone (inst->select));
316 } /* }}} graph_ident_t *inst_get_selector */
318 int inst_get_params (graph_config_t *cfg, graph_instance_t *inst, /* {{{ */
319 char *buffer, size_t buffer_size)
320 {
321 graph_ident_t *cfg_select;
323 if ((cfg == NULL) || (inst == NULL)
324 || (buffer == NULL) || (buffer_size < 1))
325 return (EINVAL);
327 cfg_select = graph_get_selector (cfg);
328 if (cfg_select == NULL)
329 {
330 fprintf (stderr, "inst_get_params: graph_get_selector failed");
331 return (-1);
332 }
334 buffer[0] = 0;
336 #define COPY_FIELD(field) do { \
337 const char *cfg_f = ident_get_##field (cfg_select); \
338 const char *inst_f = ident_get_##field (inst->select); \
339 if (strcmp (cfg_f, inst_f) == 0) \
340 { \
341 strlcat (buffer, #field, buffer_size); \
342 strlcat (buffer, "=", buffer_size); \
343 strlcat (buffer, cfg_f, buffer_size); \
344 } \
345 else \
346 { \
347 strlcat (buffer, "graph_", buffer_size); \
348 strlcat (buffer, #field, buffer_size); \
349 strlcat (buffer, "=", buffer_size); \
350 strlcat (buffer, cfg_f, buffer_size); \
351 strlcat (buffer, ";", buffer_size); \
352 strlcat (buffer, "inst_", buffer_size); \
353 strlcat (buffer, #field, buffer_size); \
354 strlcat (buffer, "=", buffer_size); \
355 strlcat (buffer, inst_f, buffer_size); \
356 } \
357 } while (0)
359 COPY_FIELD(host);
360 strlcat (buffer, ";", buffer_size);
361 COPY_FIELD(plugin);
362 strlcat (buffer, ";", buffer_size);
363 COPY_FIELD(plugin_instance);
364 strlcat (buffer, ";", buffer_size);
365 COPY_FIELD(type);
366 strlcat (buffer, ";", buffer_size);
367 COPY_FIELD(type_instance);
369 #undef COPY_FIELD
371 ident_destroy (cfg_select);
373 return (0);
374 } /* }}} int inst_get_params */
376 int inst_compare_ident (graph_instance_t *inst, /* {{{ */
377 const graph_ident_t *ident)
378 {
379 if ((inst == NULL) || (ident == NULL))
380 return (0);
382 return (ident_compare (inst->select, ident));
383 } /* }}} int inst_compare_ident */
385 _Bool inst_matches_ident (graph_instance_t *inst, /* {{{ */
386 const graph_ident_t *ident)
387 {
388 if ((inst == NULL) || (ident == NULL))
389 return (0);
391 return (ident_matches (inst->select, ident));
392 } /* }}} _Bool inst_matches_ident */
394 _Bool inst_matches_string (graph_config_t *cfg, /* {{{ */
395 graph_instance_t *inst,
396 const char *term)
397 {
398 char buffer[1024];
399 int status;
401 if ((cfg == NULL) || (inst == NULL) || (term == NULL))
402 return (0);
404 status = inst_describe (cfg, inst, buffer, sizeof (buffer));
405 if (status != 0)
406 {
407 fprintf (stderr, "inst_matches_string: inst_describe failed\n");
408 return (status);
409 }
411 strtolower (buffer);
413 /* no match */
414 if (strstr (buffer, term) == NULL)
415 return (0);
417 return (1);
418 } /* }}} _Bool inst_matches_string */
420 _Bool inst_matches_field (graph_instance_t *inst, /* {{{ */
421 graph_ident_field_t field, const char *field_value)
422 {
423 const char *selector_field;
424 size_t i;
426 if ((inst == NULL) || (field_value == NULL))
427 return (0);
429 selector_field = ident_get_field (inst->select, field);
430 if (selector_field == NULL)
431 return (0);
433 assert (!IS_ANY (selector_field));
434 if (!IS_ALL (selector_field))
435 {
436 if (strcasecmp (selector_field, field_value) == 0)
437 return (1);
438 else
439 return (0);
440 }
442 /* The selector field is an ALL selector
443 * => we need to check the files to see if the instance matches. */
444 for (i = 0; i < inst->files_num; i++)
445 {
446 selector_field = ident_get_field (inst->files[i], field);
447 if (selector_field == NULL)
448 continue;
450 assert (!IS_ANY (selector_field));
451 assert (!IS_ALL (selector_field));
453 if (strcasecmp (selector_field, field_value) == 0)
454 return (1);
455 } /* for files */
457 return (0);
458 } /* }}} _Bool inst_matches_field */
460 int inst_describe (graph_config_t *cfg, graph_instance_t *inst, /* {{{ */
461 char *buffer, size_t buffer_size)
462 {
463 graph_ident_t *cfg_select;
465 if ((cfg == NULL) || (inst == NULL)
466 || (buffer == NULL) || (buffer_size < 2))
467 return (EINVAL);
469 cfg_select = graph_get_selector (cfg);
470 if (cfg_select == NULL)
471 {
472 fprintf (stderr, "inst_describe: graph_get_selector failed\n");
473 return (-1);
474 }
476 buffer[0] = 0;
478 #define CHECK_FIELD(field) do { \
479 if (IS_ANY (ident_get_##field (cfg_select))) \
480 { \
481 if (buffer[0] != 0) \
482 strlcat (buffer, "/", buffer_size); \
483 strlcat (buffer, ident_get_##field (inst->select), buffer_size); \
484 } \
485 } while (0)
487 CHECK_FIELD (host);
488 CHECK_FIELD (plugin);
489 CHECK_FIELD (plugin_instance);
490 CHECK_FIELD (type);
491 CHECK_FIELD (type_instance);
493 #undef CHECK_FIELD
495 if (buffer[0] == 0)
496 strlcat (buffer, "default", buffer_size);
498 ident_destroy (cfg_select);
500 return (0);
501 } /* }}} int inst_describe */
503 time_t inst_get_mtime (graph_instance_t *inst) /* {{{ */
504 {
505 size_t i;
506 time_t mtime;
508 if (inst == NULL)
509 return (0);
511 mtime = 0;
512 for (i = 0; i < inst->files_num; i++)
513 {
514 time_t tmp;
516 tmp = ident_get_mtime (inst->files[i]);
517 if (mtime < tmp)
518 mtime = tmp;
519 }
521 return (mtime);
522 } /* }}} time_t inst_get_mtime */
524 /* vim: set sw=2 sts=2 et fdm=marker : */