1 /*****************************************************************************
2 * RRDtool 1.2.23 Copyright by Tobi Oetiker, 1997-2007
3 *****************************************************************************
4 * rrd_create.c creates new rrds
5 *****************************************************************************/
7 #include <locale.h>
9 #include "rrd_tool.h"
10 #include "rrd_rpncalc.h"
11 #include "rrd_hw.h"
13 #include "rrd_is_thread_safe.h"
15 unsigned long FnvHash(
16 const char *str);
17 int create_hw_contingent_rras(
18 rrd_t *rrd,
19 unsigned short period,
20 unsigned long hashed_name);
21 void parseGENERIC_DS(
22 const char *def,
23 rrd_t *rrd,
24 int ds_idx);
26 int rrd_create(
27 int argc,
28 char **argv)
29 {
30 struct option long_options[] = {
31 {"start", required_argument, 0, 'b'},
32 {"step", required_argument, 0, 's'},
33 {0, 0, 0, 0}
34 };
35 int option_index = 0;
36 int opt;
37 time_t last_up = time(NULL) - 10;
38 unsigned long pdp_step = 300;
39 struct rrd_time_value last_up_tv;
40 char *parsetime_error = NULL;
41 long long_tmp;
42 int rc;
44 optind = 0;
45 opterr = 0; /* initialize getopt */
47 while (1) {
48 opt = getopt_long(argc, argv, "b:s:", long_options, &option_index);
50 if (opt == EOF)
51 break;
53 switch (opt) {
54 case 'b':
55 if ((parsetime_error = parsetime(optarg, &last_up_tv))) {
56 rrd_set_error("start time: %s", parsetime_error);
57 return (-1);
58 }
59 if (last_up_tv.type == RELATIVE_TO_END_TIME ||
60 last_up_tv.type == RELATIVE_TO_START_TIME) {
61 rrd_set_error("specifying time relative to the 'start' "
62 "or 'end' makes no sense here");
63 return (-1);
64 }
66 last_up = mktime(&last_up_tv.tm) +last_up_tv.offset;
68 if (last_up < 3600 * 24 * 365 * 10) {
69 rrd_set_error
70 ("the first entry to the RRD should be after 1980");
71 return (-1);
72 }
73 break;
75 case 's':
76 long_tmp = atol(optarg);
77 if (long_tmp < 1) {
78 rrd_set_error("step size should be no less than one second");
79 return (-1);
80 }
81 pdp_step = long_tmp;
82 break;
84 case '?':
85 if (optopt != 0)
86 rrd_set_error("unknown option '%c'", optopt);
87 else
88 rrd_set_error("unknown option '%s'", argv[optind - 1]);
89 return (-1);
90 }
91 }
92 if (optind == argc) {
93 rrd_set_error("need name of an rrd file to create");
94 return -1;
95 }
96 rc = rrd_create_r(argv[optind],
97 pdp_step, last_up,
98 argc - optind - 1, (const char **) (argv + optind + 1));
100 return rc;
101 }
103 /* #define DEBUG */
104 int rrd_create_r(
105 const char *filename,
106 unsigned long pdp_step,
107 time_t last_up,
108 int argc,
109 const char **argv)
110 {
111 rrd_t rrd;
112 long i;
113 int offset;
114 char *token;
115 char dummychar1[2], dummychar2[2];
116 unsigned short token_idx, error_flag, period = 0;
117 unsigned long hashed_name;
119 /* init rrd clean */
120 rrd_init(&rrd);
121 /* static header */
122 if ((rrd.stat_head = calloc(1, sizeof(stat_head_t))) == NULL) {
123 rrd_set_error("allocating rrd.stat_head");
124 rrd_free(&rrd);
125 return (-1);
126 }
128 /* live header */
129 if ((rrd.live_head = calloc(1, sizeof(live_head_t))) == NULL) {
130 rrd_set_error("allocating rrd.live_head");
131 rrd_free(&rrd);
132 return (-1);
133 }
135 /* set some defaults */
136 strcpy(rrd.stat_head->cookie, RRD_COOKIE);
137 strcpy(rrd.stat_head->version, RRD_VERSION3); /* by default we are still version 3 */
138 rrd.stat_head->float_cookie = FLOAT_COOKIE;
139 rrd.stat_head->ds_cnt = 0; /* this will be adjusted later */
140 rrd.stat_head->rra_cnt = 0; /* ditto */
141 rrd.stat_head->pdp_step = pdp_step; /* 5 minute default */
143 /* a default value */
144 rrd.ds_def = NULL;
145 rrd.rra_def = NULL;
147 rrd.live_head->last_up = last_up;
149 /* optind points to the first non-option command line arg,
150 * in this case, the file name. */
151 /* Compute the FNV hash value (used by SEASONAL and DEVSEASONAL
152 * arrays. */
153 hashed_name = FnvHash(filename);
154 for (i = 0; i < argc; i++) {
155 unsigned int ii;
157 if (strncmp(argv[i], "DS:", 3) == 0) {
158 size_t old_size = sizeof(ds_def_t) * (rrd.stat_head->ds_cnt);
160 if ((rrd.ds_def = rrd_realloc(rrd.ds_def,
161 old_size + sizeof(ds_def_t))) ==
162 NULL) {
163 rrd_set_error("allocating rrd.ds_def");
164 rrd_free(&rrd);
165 return (-1);
166 }
167 memset(&rrd.ds_def[rrd.stat_head->ds_cnt], 0, sizeof(ds_def_t));
168 /* extract the name and type */
169 switch (sscanf(&argv[i][3],
170 DS_NAM_FMT "%1[:]" DST_FMT "%1[:]%n",
171 rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
172 dummychar1,
173 rrd.ds_def[rrd.stat_head->ds_cnt].dst,
174 dummychar2, &offset)) {
175 case 0:
176 case 1:
177 rrd_set_error("Invalid DS name");
178 break;
179 case 2:
180 case 3:
181 rrd_set_error("Invalid DS type");
182 break;
183 case 4: /* (%n may or may not be counted) */
184 case 5: /* check for duplicate datasource names */
185 for (ii = 0; ii < rrd.stat_head->ds_cnt; ii++)
186 if (strcmp(rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
187 rrd.ds_def[ii].ds_nam) == 0)
188 rrd_set_error("Duplicate DS name: %s",
189 rrd.ds_def[ii].ds_nam);
190 /* DS_type may be valid or not. Checked later */
191 break;
192 default:
193 rrd_set_error("invalid DS format");
194 }
195 if (rrd_test_error()) {
196 rrd_free(&rrd);
197 return -1;
198 }
200 /* parse the remainder of the arguments */
201 switch (dst_conv(rrd.ds_def[rrd.stat_head->ds_cnt].dst)) {
202 case DST_COUNTER:
203 case DST_ABSOLUTE:
204 case DST_GAUGE:
205 case DST_DERIVE:
206 parseGENERIC_DS(&argv[i][offset + 3], &rrd,
207 rrd.stat_head->ds_cnt);
208 break;
209 case DST_CDEF:
210 parseCDEF_DS(&argv[i][offset + 3], &rrd,
211 rrd.stat_head->ds_cnt);
212 break;
213 default:
214 rrd_set_error("invalid DS type specified");
215 break;
216 }
218 if (rrd_test_error()) {
219 rrd_free(&rrd);
220 return -1;
221 }
222 rrd.stat_head->ds_cnt++;
223 } else if (strncmp(argv[i], "RRA:", 4) == 0) {
224 char *argvcopy;
225 char *tokptr;
226 size_t old_size = sizeof(rra_def_t) * (rrd.stat_head->rra_cnt);
228 if ((rrd.rra_def = rrd_realloc(rrd.rra_def,
229 old_size + sizeof(rra_def_t))) ==
230 NULL) {
231 rrd_set_error("allocating rrd.rra_def");
232 rrd_free(&rrd);
233 return (-1);
234 }
235 memset(&rrd.rra_def[rrd.stat_head->rra_cnt], 0,
236 sizeof(rra_def_t));
238 argvcopy = strdup(argv[i]);
239 token = strtok_r(&argvcopy[4], ":", &tokptr);
240 token_idx = error_flag = 0;
241 while (token != NULL) {
242 switch (token_idx) {
243 case 0:
244 if (sscanf(token, CF_NAM_FMT,
245 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) !=
246 1)
247 rrd_set_error("Failed to parse CF name");
248 switch (cf_conv
249 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
250 case CF_MHWPREDICT:
251 strcpy(rrd.stat_head->version, RRD_VERSION); /* MHWPREDICT causes Version 4 */
252 case CF_HWPREDICT:
253 /* initialize some parameters */
254 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].
255 u_val = 0.1;
256 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].
257 u_val = 1.0 / 288;
258 rrd.rra_def[rrd.stat_head->rra_cnt].
259 par[RRA_dependent_rra_idx].u_cnt =
260 rrd.stat_head->rra_cnt;
261 break;
262 case CF_DEVSEASONAL:
263 case CF_SEASONAL:
264 /* initialize some parameters */
265 rrd.rra_def[rrd.stat_head->rra_cnt].
266 par[RRA_seasonal_gamma].u_val = 0.1;
267 /* fall through */
268 case CF_DEVPREDICT:
269 rrd.rra_def[rrd.stat_head->rra_cnt].
270 par[RRA_dependent_rra_idx].u_cnt = -1;
271 break;
272 case CF_FAILURES:
273 rrd.rra_def[rrd.stat_head->rra_cnt].
274 par[RRA_delta_pos].u_val = 2.0;
275 rrd.rra_def[rrd.stat_head->rra_cnt].
276 par[RRA_delta_neg].u_val = 2.0;
277 rrd.rra_def[rrd.stat_head->rra_cnt].
278 par[RRA_window_len].u_cnt = 3;
279 rrd.rra_def[rrd.stat_head->rra_cnt].
280 par[RRA_failure_threshold].u_cnt = 2;
281 rrd.rra_def[rrd.stat_head->rra_cnt].
282 par[RRA_dependent_rra_idx].u_cnt = -1;
283 break;
284 /* invalid consolidation function */
285 case -1:
286 rrd_set_error
287 ("Unrecognized consolidation function %s",
288 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
289 default:
290 break;
291 }
292 /* default: 1 pdp per cdp */
293 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = 1;
294 break;
295 case 1:
296 switch (cf_conv
297 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
298 case CF_HWPREDICT:
299 case CF_MHWPREDICT:
300 case CF_DEVSEASONAL:
301 case CF_SEASONAL:
302 case CF_DEVPREDICT:
303 case CF_FAILURES:
304 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt =
305 atoi(token);
306 break;
307 default:
308 rrd.rra_def[rrd.stat_head->rra_cnt].
309 par[RRA_cdp_xff_val].u_val = atof(token);
310 if (rrd.rra_def[rrd.stat_head->rra_cnt].
311 par[RRA_cdp_xff_val].u_val < 0.0
312 || rrd.rra_def[rrd.stat_head->rra_cnt].
313 par[RRA_cdp_xff_val].u_val >= 1.0)
314 rrd_set_error
315 ("Invalid xff: must be between 0 and 1");
316 break;
317 }
318 break;
319 case 2:
320 switch (cf_conv
321 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
322 case CF_HWPREDICT:
323 case CF_MHWPREDICT:
324 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].
325 u_val = atof(token);
326 if (atof(token) <= 0.0 || atof(token) >= 1.0)
327 rrd_set_error
328 ("Invalid alpha: must be between 0 and 1");
329 break;
330 case CF_DEVSEASONAL:
331 case CF_SEASONAL:
332 rrd.rra_def[rrd.stat_head->rra_cnt].
333 par[RRA_seasonal_gamma].u_val = atof(token);
334 if (atof(token) <= 0.0 || atof(token) >= 1.0)
335 rrd_set_error
336 ("Invalid gamma: must be between 0 and 1");
337 rrd.rra_def[rrd.stat_head->rra_cnt].
338 par[RRA_seasonal_smooth_idx].u_cnt =
339 hashed_name %
340 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt;
341 break;
342 case CF_FAILURES:
343 /* specifies the # of violations that constitutes the failure threshold */
344 rrd.rra_def[rrd.stat_head->rra_cnt].
345 par[RRA_failure_threshold].u_cnt = atoi(token);
346 if (atoi(token) < 1
347 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
348 rrd_set_error
349 ("Failure threshold is out of range %d, %d",
350 1, MAX_FAILURES_WINDOW_LEN);
351 break;
352 case CF_DEVPREDICT:
353 /* specifies the index (1-based) of CF_DEVSEASONAL array
354 * associated with this CF_DEVPREDICT array. */
355 rrd.rra_def[rrd.stat_head->rra_cnt].
356 par[RRA_dependent_rra_idx].u_cnt =
357 atoi(token) - 1;
358 break;
359 default:
360 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt =
361 atoi(token);
362 break;
363 }
364 break;
365 case 3:
366 switch (cf_conv
367 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
368 case CF_HWPREDICT:
369 case CF_MHWPREDICT:
370 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].
371 u_val = atof(token);
372 if (atof(token) < 0.0 || atof(token) > 1.0)
373 rrd_set_error
374 ("Invalid beta: must be between 0 and 1");
375 break;
376 case CF_DEVSEASONAL:
377 case CF_SEASONAL:
378 /* specifies the index (1-based) of CF_HWPREDICT array
379 * associated with this CF_DEVSEASONAL or CF_SEASONAL array.
380 * */
381 rrd.rra_def[rrd.stat_head->rra_cnt].
382 par[RRA_dependent_rra_idx].u_cnt =
383 atoi(token) - 1;
384 break;
385 case CF_FAILURES:
386 /* specifies the window length */
387 rrd.rra_def[rrd.stat_head->rra_cnt].
388 par[RRA_window_len].u_cnt = atoi(token);
389 if (atoi(token) < 1
390 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
391 rrd_set_error
392 ("Window length is out of range %d, %d", 1,
393 MAX_FAILURES_WINDOW_LEN);
394 /* verify that window length exceeds the failure threshold */
395 if (rrd.rra_def[rrd.stat_head->rra_cnt].
396 par[RRA_window_len].u_cnt <
397 rrd.rra_def[rrd.stat_head->rra_cnt].
398 par[RRA_failure_threshold].u_cnt)
399 rrd_set_error
400 ("Window length is shorter than the failure threshold");
401 break;
402 case CF_DEVPREDICT:
403 /* shouldn't be any more arguments */
404 rrd_set_error
405 ("Unexpected extra argument for consolidation function DEVPREDICT");
406 break;
407 default:
408 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt =
409 atoi(token);
410 break;
411 }
412 break;
413 case 4:
414 switch (cf_conv
415 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
416 case CF_FAILURES:
417 /* specifies the index (1-based) of CF_DEVSEASONAL array
418 * associated with this CF_DEVFAILURES array. */
419 rrd.rra_def[rrd.stat_head->rra_cnt].
420 par[RRA_dependent_rra_idx].u_cnt =
421 atoi(token) - 1;
422 break;
423 case CF_HWPREDICT:
424 case CF_MHWPREDICT:
425 /* length of the associated CF_SEASONAL and CF_DEVSEASONAL arrays. */
426 period = atoi(token);
427 if (period >
428 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt)
429 rrd_set_error
430 ("Length of seasonal cycle exceeds length of HW prediction array");
431 break;
432 default:
433 /* shouldn't be any more arguments */
434 rrd_set_error
435 ("Unexpected extra argument for consolidation function %s",
436 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
437 break;
438 }
439 break;
440 case 5:
441 /* If we are here, this must be a CF_HWPREDICT RRA.
442 * Specifies the index (1-based) of CF_SEASONAL array
443 * associated with this CF_HWPREDICT array. If this argument
444 * is missing, then the CF_SEASONAL, CF_DEVSEASONAL, CF_DEVPREDICT,
445 * CF_FAILURES.
446 * arrays are created automatically. */
447 rrd.rra_def[rrd.stat_head->rra_cnt].
448 par[RRA_dependent_rra_idx].u_cnt = atoi(token) - 1;
449 break;
450 default:
451 /* should never get here */
452 rrd_set_error("Unknown error");
453 break;
454 } /* end switch */
455 if (rrd_test_error()) {
456 /* all errors are unrecoverable */
457 free(argvcopy);
458 rrd_free(&rrd);
459 return (-1);
460 }
461 token = strtok_r(NULL, ":", &tokptr);
462 token_idx++;
463 } /* end while */
464 free(argvcopy);
465 #ifdef DEBUG
466 fprintf(stderr,
467 "Creating RRA CF: %s, dep idx %lu, current idx %lu\n",
468 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam,
469 rrd.rra_def[rrd.stat_head->rra_cnt].
470 par[RRA_dependent_rra_idx].u_cnt, rrd.stat_head->rra_cnt);
471 #endif
472 /* should we create CF_SEASONAL, CF_DEVSEASONAL, and CF_DEVPREDICT? */
473 if ((cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) ==
474 CF_HWPREDICT
475 || cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) ==
476 CF_MHWPREDICT)
477 && rrd.rra_def[rrd.stat_head->rra_cnt].
478 par[RRA_dependent_rra_idx].u_cnt == rrd.stat_head->rra_cnt) {
479 #ifdef DEBUG
480 fprintf(stderr, "Creating HW contingent RRAs\n");
481 #endif
482 if (create_hw_contingent_rras(&rrd, period, hashed_name) ==
483 -1) {
484 rrd_set_error("creating contingent RRA");
485 rrd_free(&rrd);
486 return -1;
487 }
488 }
489 rrd.stat_head->rra_cnt++;
490 } else {
491 rrd_set_error("can't parse argument '%s'", argv[i]);
492 rrd_free(&rrd);
493 return -1;
494 }
495 }
498 if (rrd.stat_head->rra_cnt < 1) {
499 rrd_set_error("you must define at least one Round Robin Archive");
500 rrd_free(&rrd);
501 return (-1);
502 }
504 if (rrd.stat_head->ds_cnt < 1) {
505 rrd_set_error("you must define at least one Data Source");
506 rrd_free(&rrd);
507 return (-1);
508 }
509 return rrd_create_fn(filename, &rrd);
510 }
512 void parseGENERIC_DS(
513 const char *def,
514 rrd_t *rrd,
515 int ds_idx)
516 {
517 char minstr[DS_NAM_SIZE], maxstr[DS_NAM_SIZE];
518 char *old_locale;
519 /*
520 int temp;
522 temp = sscanf(def,"%lu:%18[^:]:%18[^:]",
523 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
524 minstr,maxstr);
525 */
526 old_locale = setlocale(LC_NUMERIC,"C");
527 if (sscanf(def, "%lu:%18[^:]:%18[^:]",
528 &(rrd->ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
529 minstr, maxstr) == 3) {
530 if (minstr[0] == 'U' && minstr[1] == 0)
531 rrd->ds_def[ds_idx].par[DS_min_val].u_val = DNAN;
532 else
533 rrd->ds_def[ds_idx].par[DS_min_val].u_val = atof(minstr);
535 if (maxstr[0] == 'U' && maxstr[1] == 0)
536 rrd->ds_def[ds_idx].par[DS_max_val].u_val = DNAN;
537 else
538 rrd->ds_def[ds_idx].par[DS_max_val].u_val = atof(maxstr);
540 if (!isnan(rrd->ds_def[ds_idx].par[DS_min_val].u_val) &&
541 !isnan(rrd->ds_def[ds_idx].par[DS_max_val].u_val) &&
542 rrd->ds_def[ds_idx].par[DS_min_val].u_val
543 >= rrd->ds_def[ds_idx].par[DS_max_val].u_val) {
544 rrd_set_error("min must be less than max in DS definition");
545 setlocale(LC_NUMERIC,old_locale);
546 return;
547 }
548 } else {
549 rrd_set_error("failed to parse data source %s", def);
550 }
551 setlocale(LC_NUMERIC,old_locale);
552 }
554 /* Create the CF_DEVPREDICT, CF_DEVSEASONAL, CF_SEASONAL, and CF_FAILURES RRAs
555 * associated with a CF_HWPREDICT RRA. */
556 int create_hw_contingent_rras(
557 rrd_t *rrd,
558 unsigned short period,
559 unsigned long hashed_name)
560 {
561 size_t old_size;
562 rra_def_t *current_rra;
564 /* save index to CF_HWPREDICT */
565 unsigned long hw_index = rrd->stat_head->rra_cnt;
567 /* advance the pointer */
568 (rrd->stat_head->rra_cnt)++;
569 /* allocate the memory for the 4 contingent RRAs */
570 old_size = sizeof(rra_def_t) * (rrd->stat_head->rra_cnt);
571 if ((rrd->rra_def = rrd_realloc(rrd->rra_def,
572 old_size + 4 * sizeof(rra_def_t))) ==
573 NULL) {
574 rrd_set_error("allocating rrd.rra_def");
575 return (-1);
576 }
577 /* clear memory */
578 memset(&(rrd->rra_def[rrd->stat_head->rra_cnt]), 0,
579 4 * sizeof(rra_def_t));
581 /* create the CF_SEASONAL RRA */
582 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
583 strcpy(current_rra->cf_nam, "SEASONAL");
584 current_rra->row_cnt = period;
585 current_rra->par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
586 current_rra->pdp_cnt = 1;
587 current_rra->par[RRA_seasonal_gamma].u_val =
588 rrd->rra_def[hw_index].par[RRA_hw_alpha].u_val;
589 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index;
590 rrd->rra_def[hw_index].par[RRA_dependent_rra_idx].u_cnt =
591 rrd->stat_head->rra_cnt;
593 /* create the CF_DEVSEASONAL RRA */
594 (rrd->stat_head->rra_cnt)++;
595 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
596 strcpy(current_rra->cf_nam, "DEVSEASONAL");
597 current_rra->row_cnt = period;
598 current_rra->par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
599 current_rra->pdp_cnt = 1;
600 current_rra->par[RRA_seasonal_gamma].u_val =
601 rrd->rra_def[hw_index].par[RRA_hw_alpha].u_val;
602 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index;
604 /* create the CF_DEVPREDICT RRA */
605 (rrd->stat_head->rra_cnt)++;
606 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
607 strcpy(current_rra->cf_nam, "DEVPREDICT");
608 current_rra->row_cnt = (rrd->rra_def[hw_index]).row_cnt;
609 current_rra->pdp_cnt = 1;
610 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index + 2; /* DEVSEASONAL */
612 /* create the CF_FAILURES RRA */
613 (rrd->stat_head->rra_cnt)++;
614 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
615 strcpy(current_rra->cf_nam, "FAILURES");
616 current_rra->row_cnt = period;
617 current_rra->pdp_cnt = 1;
618 current_rra->par[RRA_delta_pos].u_val = 2.0;
619 current_rra->par[RRA_delta_neg].u_val = 2.0;
620 current_rra->par[RRA_failure_threshold].u_cnt = 7;
621 current_rra->par[RRA_window_len].u_cnt = 9;
622 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index + 2; /* DEVSEASONAL */
623 return 0;
624 }
626 /* create and empty rrd file according to the specs given */
628 int rrd_create_fn(
629 const char *file_name,
630 rrd_t *rrd)
631 {
632 unsigned long i, ii;
633 int rrd_file;
634 rrd_value_t *unknown;
635 int unkn_cnt;
636 rrd_file_t *rrd_file_dn;
637 rrd_t rrd_dn;
639 if ((rrd_file = open(file_name, O_WRONLY|O_CREAT|O_TRUNC,0666)) == NULL) {
640 rrd_set_error("creating '%s': %s", file_name, rrd_strerror(errno));
641 rrd_free(rrd);
642 return (-1);
643 }
645 write(rrd_file,rrd->stat_head, sizeof(stat_head_t));
647 write(rrd_file,rrd->ds_def, sizeof(ds_def_t)*rrd->stat_head->ds_cnt);
649 write(rrd_file,rrd->rra_def,
650 sizeof(rra_def_t)* rrd->stat_head->rra_cnt);
652 write(rrd_file,rrd->live_head, sizeof(live_head_t));
654 if ((rrd->pdp_prep = calloc(1, sizeof(pdp_prep_t))) == NULL) {
655 rrd_set_error("allocating pdp_prep");
656 rrd_free(rrd);
657 close(rrd_file);
658 return (-1);
659 }
661 strcpy(rrd->pdp_prep->last_ds, "UNKN");
663 rrd->pdp_prep->scratch[PDP_val].u_val = 0.0;
664 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt =
665 rrd->live_head->last_up % rrd->stat_head->pdp_step;
667 for (i = 0; i < rrd->stat_head->ds_cnt; i++)
668 write(rrd_file,rrd->pdp_prep, sizeof(pdp_prep_t));
670 if ((rrd->cdp_prep = calloc(1, sizeof(cdp_prep_t))) == NULL) {
671 rrd_set_error("allocating cdp_prep");
672 rrd_free(rrd);
673 close(rrd_file);
674 return (-1);
675 }
678 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
679 switch (cf_conv(rrd->rra_def[i].cf_nam)) {
680 case CF_HWPREDICT:
681 case CF_MHWPREDICT:
682 init_hwpredict_cdp(rrd->cdp_prep);
683 break;
684 case CF_SEASONAL:
685 case CF_DEVSEASONAL:
686 init_seasonal_cdp(rrd->cdp_prep);
687 break;
688 case CF_FAILURES:
689 /* initialize violation history to 0 */
690 for (ii = 0; ii < MAX_CDP_PAR_EN; ii++) {
691 /* We can zero everything out, by setting u_val to the
692 * NULL address. Each array entry in scratch is 8 bytes
693 * (a double), but u_cnt only accessed 4 bytes (long) */
694 rrd->cdp_prep->scratch[ii].u_val = 0.0;
695 }
696 break;
697 default:
698 /* can not be zero because we don't know anything ... */
699 rrd->cdp_prep->scratch[CDP_val].u_val = DNAN;
700 /* startup missing pdp count */
701 rrd->cdp_prep->scratch[CDP_unkn_pdp_cnt].u_cnt =
702 ((rrd->live_head->last_up -
703 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt)
704 % (rrd->stat_head->pdp_step
705 * rrd->rra_def[i].pdp_cnt)) / rrd->stat_head->pdp_step;
706 break;
707 }
709 for (ii = 0; ii < rrd->stat_head->ds_cnt; ii++) {
710 write(rrd_file,rrd->cdp_prep, sizeof(cdp_prep_t));
711 }
712 }
714 /* now, we must make sure that the rest of the rrd
715 struct is properly initialized */
717 if ((rrd->rra_ptr = calloc(1, sizeof(rra_ptr_t))) == NULL) {
718 rrd_set_error("allocating rra_ptr");
719 rrd_free(rrd);
720 close(rrd_file);
721 return (-1);
722 }
724 /* changed this initialization to be consistent with
725 * rrd_restore. With the old value (0), the first update
726 * would occur for cur_row = 1 because rrd_update increments
727 * the pointer a priori. */
728 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
729 rrd->rra_ptr->cur_row = rrd->rra_def[i].row_cnt - 1;
730 write(rrd_file,rrd->rra_ptr, sizeof(rra_ptr_t));
731 }
733 /* write the empty data area */
734 if ((unknown = (rrd_value_t *) malloc(512 * sizeof(rrd_value_t))) == NULL) {
735 rrd_set_error("allocating unknown");
736 rrd_free(rrd);
737 close(rrd_file);
738 return (-1);
739 }
740 for (i = 0; i < 512; ++i)
741 unknown[i] = DNAN;
743 unkn_cnt = 0;
744 for (i = 0; i < rrd->stat_head->rra_cnt; i++)
745 unkn_cnt += rrd->stat_head->ds_cnt * rrd->rra_def[i].row_cnt;
747 while (unkn_cnt > 0) {
748 write(rrd_file,unknown, sizeof(rrd_value_t) * min(unkn_cnt, 512));
750 unkn_cnt -= 512;
751 }
752 free(unknown);
753 fdatasync(rrd_file);
754 rrd_free(rrd);
755 if ( close(rrd_file) == -1 ) {
756 rrd_set_error("creating rrd: %s", rrd_strerror(errno));
757 return -1;
758 }
759 /* flush all we don't need out of the cache */
760 rrd_file_dn = rrd_open(file_name, &rrd_dn, RRD_READONLY);
761 rrd_dontneed(rrd_file_dn,&rrd_dn);
762 rrd_close(rrd_file_dn);
763 return (0);
764 }