1 #include <stdlib.h>
2 #include <string.h>
3 #include <errno.h>
4 #include <time.h>
6 #include "graph_instance.h"
7 #include "graph_ident.h"
8 #include "graph_list.h"
9 #include "common.h"
10 #include "utils_params.h"
12 #include <fcgiapp.h>
13 #include <fcgi_stdio.h>
15 struct graph_instance_s /* {{{ */
16 {
17 graph_ident_t *select;
19 graph_ident_t **files;
20 size_t files_num;
22 graph_instance_t *next;
23 }; /* }}} struct graph_instance_s */
25 struct def_callback_data_s
26 {
27 graph_instance_t *inst;
28 str_array_t *args;
29 };
30 typedef struct def_callback_data_s def_callback_data_t;
32 /*
33 * Private functions
34 */
35 /* Create one DEF for each data source in the file. Called by
36 * "inst_get_default_defs" for each file. */
37 static graph_def_t *ident_get_default_defs (graph_config_t *cfg, /* {{{ */
38 graph_ident_t *ident, graph_def_t *def_head)
39 {
40 graph_def_t *defs = NULL;
41 char *file;
42 char **dses = NULL;
43 size_t dses_num = 0;
44 int status;
45 size_t i;
47 if ((cfg == NULL) || (ident == NULL))
48 return (def_head);
50 file = ident_to_file (ident);
51 if (file == NULL)
52 {
53 fprintf (stderr, "ident_get_default_defs: ident_to_file failed\n");
54 return (def_head);
55 }
57 status = ds_list_from_rrd_file (file, &dses_num, &dses);
58 if (status != 0)
59 {
60 free (file);
61 return (def_head);
62 }
64 for (i = 0; i < dses_num; i++)
65 {
66 graph_def_t *def;
68 def = def_search (def_head, ident, dses[i]);
69 if (def != NULL)
70 continue;
72 def = def_create (cfg, ident, dses[i]);
73 if (def == NULL)
74 continue;
76 if (defs == NULL)
77 defs = def;
78 else
79 def_append (defs, def);
81 free (dses[i]);
82 }
84 free (dses);
85 free (file);
87 return (defs);
88 } /* }}} int ident_get_default_defs */
90 /* Create one or more DEFs for each file in the graph instance. The number
91 * depends on the number of data sources in each of the files. Called from
92 * "inst_get_rrdargs" if no DEFs are available from the configuration.
93 * */
94 static graph_def_t *inst_get_default_defs (graph_config_t *cfg, /* {{{ */
95 graph_instance_t *inst)
96 {
97 graph_def_t *defs = NULL;
98 size_t i;
100 if ((cfg == NULL) || (inst == NULL))
101 return (NULL);
103 for (i = 0; i < inst->files_num; i++)
104 {
105 graph_def_t *def;
107 def = ident_get_default_defs (cfg, inst->files[i], defs);
108 if (def == NULL)
109 continue;
111 if (defs == NULL)
112 defs = def;
113 else
114 def_append (defs, def);
115 }
117 return (defs);
118 } /* }}} graph_def_t *inst_get_default_defs */
120 /* Called with each DEF in turn. Calls "def_get_rrdargs" with every appropriate
121 * file / DEF pair. */
122 static int gl_instance_get_rrdargs_cb (graph_def_t *def, void *user_data) /* {{{ */
123 {
124 def_callback_data_t *data = user_data;
125 graph_instance_t *inst = data->inst;
126 str_array_t *args = data->args;
128 size_t i;
130 for (i = 0; i < inst->files_num; i++)
131 {
132 if (!def_matches (def, inst->files[i]))
133 continue;
135 def_get_rrdargs (def, inst->files[i], args);
136 }
138 return (0);
139 } /* }}} int gl_instance_get_rrdargs_cb */
141 static const char *get_part_from_param (const char *prim_key, /* {{{ */
142 const char *sec_key)
143 {
144 const char *val;
146 val = param (prim_key);
147 if (val != NULL)
148 return (val);
150 return (param (sec_key));
151 } /* }}} const char *get_part_from_param */
153 /*
154 * Public functions
155 */
156 graph_instance_t *inst_create (graph_config_t *cfg, /* {{{ */
157 const graph_ident_t *ident)
158 {
159 graph_instance_t *i;
160 graph_ident_t *selector;
162 if ((cfg == NULL) || (ident == NULL))
163 return (NULL);
165 i = malloc (sizeof (*i));
166 if (i == NULL)
167 return (NULL);
168 memset (i, 0, sizeof (*i));
170 selector = graph_get_selector (cfg);
171 if (selector == NULL)
172 {
173 fprintf (stderr, "inst_create: graph_get_selector failed\n");
174 free (i);
175 return (NULL);
176 }
178 i->select = ident_copy_with_selector (selector, ident,
179 IDENT_FLAG_REPLACE_ANY);
180 if (i->select == NULL)
181 {
182 fprintf (stderr, "inst_create: ident_copy_with_selector failed\n");
183 ident_destroy (selector);
184 free (i);
185 return (NULL);
186 }
188 ident_destroy (selector);
190 i->files = NULL;
191 i->files_num = 0;
193 i->next = NULL;
195 return (i);
196 } /* }}} graph_instance_t *inst_create */
198 void inst_destroy (graph_instance_t *inst) /* {{{ */
199 {
200 graph_instance_t *next;
201 size_t i;
203 if (inst == NULL)
204 return;
206 next = inst->next;
208 ident_destroy (inst->select);
210 for (i = 0; i < inst->files_num; i++)
211 ident_destroy (inst->files[i]);
212 free (inst->files);
214 free (inst);
216 inst_destroy (next);
217 } /* }}} void inst_destroy */
219 int inst_add_file (graph_instance_t *inst, /* {{{ */
220 const graph_ident_t *file)
221 {
222 graph_ident_t **tmp;
224 tmp = realloc (inst->files, sizeof (*inst->files) * (inst->files_num + 1));
225 if (tmp == NULL)
226 return (ENOMEM);
227 inst->files = tmp;
229 inst->files[inst->files_num] = ident_clone (file);
230 if (inst->files[inst->files_num] == NULL)
231 return (ENOMEM);
233 inst->files_num++;
235 return (0);
236 } /* }}} int inst_add_file */
238 graph_instance_t *inst_get_selected (graph_config_t *cfg) /* {{{ */
239 {
240 const char *host = get_part_from_param ("inst_host", "host");
241 const char *plugin = get_part_from_param ("inst_plugin", "plugin");
242 const char *plugin_instance = get_part_from_param ("inst_plugin_instance", "plugin_instance");
243 const char *type = get_part_from_param ("inst_type", "type");
244 const char *type_instance = get_part_from_param ("inst_type_instance", "type_instance");
245 graph_ident_t *ident;
246 graph_instance_t *inst;
248 if (cfg == NULL)
249 cfg = gl_graph_get_selected ();
251 if (cfg == NULL)
252 {
253 DEBUG ("inst_get_selected: cfg == NULL;\n");
254 return (NULL);
255 }
257 if ((host == NULL)
258 || (plugin == NULL) || (plugin_instance == NULL)
259 || (type == NULL) || (type_instance == NULL))
260 {
261 DEBUG ("inst_get_selected: A parameter is NULL.\n");
262 return (NULL);
263 }
265 ident = ident_create (host, plugin, plugin_instance, type, type_instance);
267 for (inst = graph_get_instances (cfg); inst != NULL; inst = inst->next)
268 {
269 if (ident_compare (ident, inst->select) != 0)
270 continue;
272 ident_destroy (ident);
273 return (inst);
274 }
276 DEBUG ("inst_get_selected: No match found.\n");
277 ident_destroy (ident);
278 return (NULL);
279 } /* }}} graph_instance_t *inst_get_selected */
281 int inst_get_rrdargs (graph_config_t *cfg, /* {{{ */
282 graph_instance_t *inst,
283 str_array_t *args)
284 {
285 def_callback_data_t data = { inst, args };
286 graph_def_t *defs;
287 int status;
289 if ((cfg == NULL) || (inst == NULL) || (args == NULL))
290 return (EINVAL);
292 status = graph_get_rrdargs (cfg, inst, args);
293 if (status != 0)
294 return (status);
296 defs = graph_get_defs (cfg);
297 if (defs == NULL)
298 {
299 defs = inst_get_default_defs (cfg, inst);
301 if (defs == NULL)
302 return (-1);
304 status = def_foreach (defs, gl_instance_get_rrdargs_cb, &data);
306 def_destroy (defs);
307 }
308 else
309 {
310 status = def_foreach (defs, gl_instance_get_rrdargs_cb, &data);
311 }
313 return (status);
314 } /* }}} int inst_get_rrdargs */
316 graph_ident_t *inst_get_selector (graph_instance_t *inst) /* {{{ */
317 {
318 if (inst == NULL)
319 return (NULL);
321 return (ident_clone (inst->select));
322 } /* }}} graph_ident_t *inst_get_selector */
324 int inst_get_params (graph_config_t *cfg, graph_instance_t *inst, /* {{{ */
325 char *buffer, size_t buffer_size)
326 {
327 graph_ident_t *cfg_select;
329 if ((cfg == NULL) || (inst == NULL)
330 || (buffer == NULL) || (buffer_size < 1))
331 return (EINVAL);
333 cfg_select = graph_get_selector (cfg);
334 if (cfg_select == NULL)
335 {
336 fprintf (stderr, "inst_get_params: graph_get_selector failed");
337 return (-1);
338 }
340 buffer[0] = 0;
342 #define COPY_FIELD(field) do { \
343 const char *cfg_f = ident_get_##field (cfg_select); \
344 const char *inst_f = ident_get_##field (inst->select); \
345 if (strcmp (cfg_f, inst_f) == 0) \
346 { \
347 strlcat (buffer, #field, buffer_size); \
348 strlcat (buffer, "=", buffer_size); \
349 strlcat (buffer, cfg_f, buffer_size); \
350 } \
351 else \
352 { \
353 strlcat (buffer, "graph_", buffer_size); \
354 strlcat (buffer, #field, buffer_size); \
355 strlcat (buffer, "=", buffer_size); \
356 strlcat (buffer, cfg_f, buffer_size); \
357 strlcat (buffer, ";", buffer_size); \
358 strlcat (buffer, "inst_", buffer_size); \
359 strlcat (buffer, #field, buffer_size); \
360 strlcat (buffer, "=", buffer_size); \
361 strlcat (buffer, inst_f, buffer_size); \
362 } \
363 } while (0)
365 COPY_FIELD(host);
366 strlcat (buffer, ";", buffer_size);
367 COPY_FIELD(plugin);
368 strlcat (buffer, ";", buffer_size);
369 COPY_FIELD(plugin_instance);
370 strlcat (buffer, ";", buffer_size);
371 COPY_FIELD(type);
372 strlcat (buffer, ";", buffer_size);
373 COPY_FIELD(type_instance);
375 #undef COPY_FIELD
377 ident_destroy (cfg_select);
379 return (0);
380 } /* }}} int inst_get_params */
382 int inst_append (graph_instance_t *head, graph_instance_t *inst) /* {{{ */
383 {
384 graph_instance_t *ptr;
386 if ((head == NULL) || (inst == NULL))
387 return (EINVAL);
389 ptr = head;
390 while (ptr->next != NULL)
391 ptr = ptr->next;
393 ptr->next = inst;
395 return (0);
396 } /* }}} int inst_append */
398 int inst_foreach (graph_instance_t *inst, /* {{{ */
399 inst_callback_t cb, void *user_data)
400 {
401 graph_instance_t *ptr;
403 if ((inst == NULL) || (cb == NULL))
404 return (EINVAL);
406 for (ptr = inst; ptr != NULL; ptr = ptr->next)
407 {
408 int status;
410 status = (*cb) (ptr, user_data);
411 if (status != 0)
412 return (status);
413 }
415 return (0);
416 } /* }}} int inst_foreach */
418 graph_instance_t *inst_find_matching (graph_instance_t *inst, /* {{{ */
419 const graph_ident_t *ident)
420 {
421 graph_instance_t *ptr;
423 if ((inst == NULL) || (ident == NULL))
424 return (NULL);
426 for (ptr = inst; ptr != NULL; ptr = ptr->next)
427 if (ident_matches (ptr->select, ident))
428 return (ptr);
430 return (NULL);
431 } /* }}} graph_instance_t *inst_find_matching */
433 int inst_describe (graph_config_t *cfg, graph_instance_t *inst, /* {{{ */
434 char *buffer, size_t buffer_size)
435 {
436 graph_ident_t *cfg_select;
438 if ((cfg == NULL) || (inst == NULL)
439 || (buffer == NULL) || (buffer_size < 2))
440 return (EINVAL);
442 cfg_select = graph_get_selector (cfg);
443 if (cfg_select == NULL)
444 {
445 fprintf (stderr, "inst_describe: graph_get_selector failed\n");
446 return (-1);
447 }
449 buffer[0] = 0;
451 #define CHECK_FIELD(field) do { \
452 if (IS_ANY (ident_get_##field (cfg_select))) \
453 { \
454 if (buffer[0] != 0) \
455 strlcat (buffer, "/", buffer_size); \
456 strlcat (buffer, ident_get_##field (inst->select), buffer_size); \
457 } \
458 } while (0)
460 CHECK_FIELD (host);
461 CHECK_FIELD (plugin);
462 CHECK_FIELD (plugin_instance);
463 CHECK_FIELD (type);
464 CHECK_FIELD (type_instance);
466 #undef CHECK_FIELD
468 if (buffer[0] == 0)
469 strlcat (buffer, "default", buffer_size);
471 ident_destroy (cfg_select);
473 return (0);
474 } /* }}} int inst_describe */
476 time_t inst_get_mtime (graph_instance_t *inst) /* {{{ */
477 {
478 size_t i;
479 time_t mtime;
481 if (inst == NULL)
482 return (0);
484 mtime = 0;
485 for (i = 0; i < inst->files_num; i++)
486 {
487 time_t tmp;
489 tmp = ident_get_mtime (inst->files[i]);
490 if (mtime < tmp)
491 mtime = tmp;
492 }
494 return (mtime);
495 } /* }}} time_t inst_get_mtime */
497 /* vim: set sw=2 sts=2 et fdm=marker : */