1 #include <stdlib.h>
2 #include <string.h>
3 #include <errno.h>
4 #include <time.h>
6 #include "graph_instance.h"
7 #include "graph_def.h"
8 #include "graph_ident.h"
9 #include "graph_list.h"
10 #include "common.h"
11 #include "utils_cgi.h"
13 #include <fcgiapp.h>
14 #include <fcgi_stdio.h>
16 struct graph_instance_s /* {{{ */
17 {
18 graph_ident_t *select;
20 graph_ident_t **files;
21 size_t files_num;
22 }; /* }}} struct graph_instance_s */
24 struct def_callback_data_s
25 {
26 graph_instance_t *inst;
27 str_array_t *args;
28 };
29 typedef struct def_callback_data_s def_callback_data_t;
31 /*
32 * Private functions
33 */
34 /* Create one DEF for each data source in the file. Called by
35 * "inst_get_default_defs" for each file. */
36 static graph_def_t *ident_get_default_defs (graph_config_t *cfg, /* {{{ */
37 graph_ident_t *ident, graph_def_t *def_head)
38 {
39 graph_def_t *defs = NULL;
40 char *file;
41 char **dses = NULL;
42 size_t dses_num = 0;
43 int status;
44 size_t i;
46 if ((cfg == NULL) || (ident == NULL))
47 return (def_head);
49 file = ident_to_file (ident);
50 if (file == NULL)
51 {
52 fprintf (stderr, "ident_get_default_defs: ident_to_file failed\n");
53 return (def_head);
54 }
56 status = ds_list_from_rrd_file (file, &dses_num, &dses);
57 if (status != 0)
58 {
59 free (file);
60 return (def_head);
61 }
63 for (i = 0; i < dses_num; i++)
64 {
65 graph_def_t *def;
67 def = def_search (def_head, ident, dses[i]);
68 if (def != NULL)
69 continue;
71 def = def_create (cfg, ident, dses[i]);
72 if (def == NULL)
73 continue;
75 if (defs == NULL)
76 defs = def;
77 else
78 def_append (defs, def);
80 free (dses[i]);
81 }
83 free (dses);
84 free (file);
86 return (defs);
87 } /* }}} int ident_get_default_defs */
89 /* Create one or more DEFs for each file in the graph instance. The number
90 * depends on the number of data sources in each of the files. Called from
91 * "inst_get_rrdargs" if no DEFs are available from the configuration.
92 * */
93 static graph_def_t *inst_get_default_defs (graph_config_t *cfg, /* {{{ */
94 graph_instance_t *inst)
95 {
96 graph_def_t *defs = NULL;
97 size_t i;
99 if ((cfg == NULL) || (inst == NULL))
100 return (NULL);
102 for (i = 0; i < inst->files_num; i++)
103 {
104 graph_def_t *def;
106 def = ident_get_default_defs (cfg, inst->files[i], defs);
107 if (def == NULL)
108 continue;
110 if (defs == NULL)
111 defs = def;
112 else
113 def_append (defs, def);
114 }
116 return (defs);
117 } /* }}} graph_def_t *inst_get_default_defs */
119 /* Called with each DEF in turn. Calls "def_get_rrdargs" with every appropriate
120 * file / DEF pair. */
121 static int gl_instance_get_rrdargs_cb (graph_def_t *def, void *user_data) /* {{{ */
122 {
123 def_callback_data_t *data = user_data;
124 graph_instance_t *inst = data->inst;
125 str_array_t *args = data->args;
127 size_t i;
129 for (i = 0; i < inst->files_num; i++)
130 {
131 if (!def_matches (def, inst->files[i]))
132 continue;
134 def_get_rrdargs (def, inst->files[i], args);
135 }
137 return (0);
138 } /* }}} int gl_instance_get_rrdargs_cb */
140 static const char *get_part_from_param (const char *prim_key, /* {{{ */
141 const char *sec_key)
142 {
143 const char *val;
145 val = param (prim_key);
146 if (val != NULL)
147 return (val);
149 return (param (sec_key));
150 } /* }}} const char *get_part_from_param */
152 /*
153 * Public functions
154 */
155 graph_instance_t *inst_create (graph_config_t *cfg, /* {{{ */
156 const graph_ident_t *ident)
157 {
158 graph_instance_t *i;
159 graph_ident_t *selector;
161 if ((cfg == NULL) || (ident == NULL))
162 return (NULL);
164 i = malloc (sizeof (*i));
165 if (i == NULL)
166 return (NULL);
167 memset (i, 0, sizeof (*i));
169 selector = graph_get_selector (cfg);
170 if (selector == NULL)
171 {
172 fprintf (stderr, "inst_create: graph_get_selector failed\n");
173 free (i);
174 return (NULL);
175 }
177 i->select = ident_copy_with_selector (selector, ident,
178 IDENT_FLAG_REPLACE_ANY);
179 if (i->select == NULL)
180 {
181 fprintf (stderr, "inst_create: ident_copy_with_selector failed\n");
182 ident_destroy (selector);
183 free (i);
184 return (NULL);
185 }
187 ident_destroy (selector);
189 i->files = NULL;
190 i->files_num = 0;
192 return (i);
193 } /* }}} graph_instance_t *inst_create */
195 void inst_destroy (graph_instance_t *inst) /* {{{ */
196 {
197 size_t i;
199 if (inst == NULL)
200 return;
202 ident_destroy (inst->select);
204 for (i = 0; i < inst->files_num; i++)
205 ident_destroy (inst->files[i]);
206 free (inst->files);
208 free (inst);
209 } /* }}} void inst_destroy */
211 int inst_add_file (graph_instance_t *inst, /* {{{ */
212 const graph_ident_t *file)
213 {
214 graph_ident_t **tmp;
216 tmp = realloc (inst->files, sizeof (*inst->files) * (inst->files_num + 1));
217 if (tmp == NULL)
218 return (ENOMEM);
219 inst->files = tmp;
221 inst->files[inst->files_num] = ident_clone (file);
222 if (inst->files[inst->files_num] == NULL)
223 return (ENOMEM);
225 inst->files_num++;
227 return (0);
228 } /* }}} int inst_add_file */
230 graph_instance_t *inst_get_selected (graph_config_t *cfg) /* {{{ */
231 {
232 const char *host = get_part_from_param ("inst_host", "host");
233 const char *plugin = get_part_from_param ("inst_plugin", "plugin");
234 const char *plugin_instance = get_part_from_param ("inst_plugin_instance",
235 "plugin_instance");
236 const char *type = get_part_from_param ("inst_type", "type");
237 const char *type_instance = get_part_from_param ("inst_type_instance",
238 "type_instance");
240 graph_ident_t *ident;
241 graph_instance_t *inst;
243 if (cfg == NULL)
244 cfg = gl_graph_get_selected ();
246 if (cfg == NULL)
247 {
248 DEBUG ("inst_get_selected: cfg == NULL;\n");
249 return (NULL);
250 }
252 if ((host == NULL)
253 || (plugin == NULL) || (plugin_instance == NULL)
254 || (type == NULL) || (type_instance == NULL))
255 {
256 DEBUG ("inst_get_selected: A parameter is NULL.\n");
257 return (NULL);
258 }
260 ident = ident_create (host, plugin, plugin_instance, type, type_instance);
261 if (ident == NULL)
262 {
263 fprintf (stderr, "inst_get_selected: ident_create failed\n");
264 return (NULL);
265 }
267 inst = graph_inst_find_exact (cfg, ident);
268 ident_destroy (ident);
270 return (inst);
271 } /* }}} graph_instance_t *inst_get_selected */
273 int inst_get_rrdargs (graph_config_t *cfg, /* {{{ */
274 graph_instance_t *inst,
275 str_array_t *args)
276 {
277 def_callback_data_t data = { inst, args };
278 graph_def_t *defs;
279 int status;
281 if ((cfg == NULL) || (inst == NULL) || (args == NULL))
282 return (EINVAL);
284 status = graph_get_rrdargs (cfg, inst, args);
285 if (status != 0)
286 return (status);
288 defs = graph_get_defs (cfg);
289 if (defs == NULL)
290 {
291 defs = inst_get_default_defs (cfg, inst);
293 if (defs == NULL)
294 return (-1);
296 status = def_foreach (defs, gl_instance_get_rrdargs_cb, &data);
298 def_destroy (defs);
299 }
300 else
301 {
302 status = def_foreach (defs, gl_instance_get_rrdargs_cb, &data);
303 }
305 return (status);
306 } /* }}} int inst_get_rrdargs */
308 graph_ident_t *inst_get_selector (graph_instance_t *inst) /* {{{ */
309 {
310 if (inst == NULL)
311 return (NULL);
313 return (ident_clone (inst->select));
314 } /* }}} graph_ident_t *inst_get_selector */
316 int inst_get_params (graph_config_t *cfg, graph_instance_t *inst, /* {{{ */
317 char *buffer, size_t buffer_size)
318 {
319 graph_ident_t *cfg_select;
321 if ((cfg == NULL) || (inst == NULL)
322 || (buffer == NULL) || (buffer_size < 1))
323 return (EINVAL);
325 cfg_select = graph_get_selector (cfg);
326 if (cfg_select == NULL)
327 {
328 fprintf (stderr, "inst_get_params: graph_get_selector failed");
329 return (-1);
330 }
332 buffer[0] = 0;
334 #define COPY_FIELD(field) do { \
335 const char *cfg_f = ident_get_##field (cfg_select); \
336 const char *inst_f = ident_get_##field (inst->select); \
337 if (strcmp (cfg_f, inst_f) == 0) \
338 { \
339 strlcat (buffer, #field, buffer_size); \
340 strlcat (buffer, "=", buffer_size); \
341 strlcat (buffer, cfg_f, buffer_size); \
342 } \
343 else \
344 { \
345 strlcat (buffer, "graph_", buffer_size); \
346 strlcat (buffer, #field, buffer_size); \
347 strlcat (buffer, "=", buffer_size); \
348 strlcat (buffer, cfg_f, buffer_size); \
349 strlcat (buffer, ";", buffer_size); \
350 strlcat (buffer, "inst_", buffer_size); \
351 strlcat (buffer, #field, buffer_size); \
352 strlcat (buffer, "=", buffer_size); \
353 strlcat (buffer, inst_f, buffer_size); \
354 } \
355 } while (0)
357 COPY_FIELD(host);
358 strlcat (buffer, ";", buffer_size);
359 COPY_FIELD(plugin);
360 strlcat (buffer, ";", buffer_size);
361 COPY_FIELD(plugin_instance);
362 strlcat (buffer, ";", buffer_size);
363 COPY_FIELD(type);
364 strlcat (buffer, ";", buffer_size);
365 COPY_FIELD(type_instance);
367 #undef COPY_FIELD
369 ident_destroy (cfg_select);
371 return (0);
372 } /* }}} int inst_get_params */
374 int inst_compare_ident (graph_instance_t *inst, /* {{{ */
375 const graph_ident_t *ident)
376 {
377 if ((inst == NULL) || (ident == NULL))
378 return (0);
380 return (ident_compare (inst->select, ident));
381 } /* }}} int inst_compare_ident */
383 _Bool inst_matches_ident (graph_instance_t *inst, /* {{{ */
384 const graph_ident_t *ident)
385 {
386 if ((inst == NULL) || (ident == NULL))
387 return (0);
389 return (ident_matches (inst->select, ident));
390 } /* }}} _Bool inst_matches_ident */
392 _Bool inst_matches_string (graph_config_t *cfg, /* {{{ */
393 graph_instance_t *inst,
394 const char *term)
395 {
396 char buffer[1024];
397 int status;
399 if ((cfg == NULL) || (inst == NULL) || (term == NULL))
400 return (0);
402 status = inst_describe (cfg, inst, buffer, sizeof (buffer));
403 if (status != 0)
404 {
405 fprintf (stderr, "inst_matches_string: inst_describe failed\n");
406 return (status);
407 }
409 strtolower (buffer);
411 /* no match */
412 if (strstr (buffer, term) == NULL)
413 return (0);
415 return (1);
416 } /* }}} _Bool inst_matches_string */
418 int inst_describe (graph_config_t *cfg, graph_instance_t *inst, /* {{{ */
419 char *buffer, size_t buffer_size)
420 {
421 graph_ident_t *cfg_select;
423 if ((cfg == NULL) || (inst == NULL)
424 || (buffer == NULL) || (buffer_size < 2))
425 return (EINVAL);
427 cfg_select = graph_get_selector (cfg);
428 if (cfg_select == NULL)
429 {
430 fprintf (stderr, "inst_describe: graph_get_selector failed\n");
431 return (-1);
432 }
434 buffer[0] = 0;
436 #define CHECK_FIELD(field) do { \
437 if (IS_ANY (ident_get_##field (cfg_select))) \
438 { \
439 if (buffer[0] != 0) \
440 strlcat (buffer, "/", buffer_size); \
441 strlcat (buffer, ident_get_##field (inst->select), buffer_size); \
442 } \
443 } while (0)
445 CHECK_FIELD (host);
446 CHECK_FIELD (plugin);
447 CHECK_FIELD (plugin_instance);
448 CHECK_FIELD (type);
449 CHECK_FIELD (type_instance);
451 #undef CHECK_FIELD
453 if (buffer[0] == 0)
454 strlcat (buffer, "default", buffer_size);
456 ident_destroy (cfg_select);
458 return (0);
459 } /* }}} int inst_describe */
461 time_t inst_get_mtime (graph_instance_t *inst) /* {{{ */
462 {
463 size_t i;
464 time_t mtime;
466 if (inst == NULL)
467 return (0);
469 mtime = 0;
470 for (i = 0; i < inst->files_num; i++)
471 {
472 time_t tmp;
474 tmp = ident_get_mtime (inst->files[i]);
475 if (mtime < tmp)
476 mtime = tmp;
477 }
479 return (mtime);
480 } /* }}} time_t inst_get_mtime */
482 /* vim: set sw=2 sts=2 et fdm=marker : */