0e2f82c14150e8d39ef28cd0f42dbed1192cdaf2
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_VERSION);
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_HWPREDICT:
251 case CF_MHWPREDICT:
252 /* initialize some parameters */
253 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].
254 u_val = 0.1;
255 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].
256 u_val = 1.0 / 288;
257 rrd.rra_def[rrd.stat_head->rra_cnt].
258 par[RRA_dependent_rra_idx].u_cnt =
259 rrd.stat_head->rra_cnt;
260 break;
261 case CF_DEVSEASONAL:
262 case CF_SEASONAL:
263 /* initialize some parameters */
264 rrd.rra_def[rrd.stat_head->rra_cnt].
265 par[RRA_seasonal_gamma].u_val = 0.1;
266 /* fall through */
267 case CF_DEVPREDICT:
268 rrd.rra_def[rrd.stat_head->rra_cnt].
269 par[RRA_dependent_rra_idx].u_cnt = -1;
270 break;
271 case CF_FAILURES:
272 rrd.rra_def[rrd.stat_head->rra_cnt].
273 par[RRA_delta_pos].u_val = 2.0;
274 rrd.rra_def[rrd.stat_head->rra_cnt].
275 par[RRA_delta_neg].u_val = 2.0;
276 rrd.rra_def[rrd.stat_head->rra_cnt].
277 par[RRA_window_len].u_cnt = 3;
278 rrd.rra_def[rrd.stat_head->rra_cnt].
279 par[RRA_failure_threshold].u_cnt = 2;
280 rrd.rra_def[rrd.stat_head->rra_cnt].
281 par[RRA_dependent_rra_idx].u_cnt = -1;
282 break;
283 /* invalid consolidation function */
284 case -1:
285 rrd_set_error
286 ("Unrecognized consolidation function %s",
287 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
288 default:
289 break;
290 }
291 /* default: 1 pdp per cdp */
292 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = 1;
293 break;
294 case 1:
295 switch (cf_conv
296 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
297 case CF_HWPREDICT:
298 case CF_MHWPREDICT:
299 case CF_DEVSEASONAL:
300 case CF_SEASONAL:
301 case CF_DEVPREDICT:
302 case CF_FAILURES:
303 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt =
304 atoi(token);
305 break;
306 default:
307 rrd.rra_def[rrd.stat_head->rra_cnt].
308 par[RRA_cdp_xff_val].u_val = atof(token);
309 if (rrd.rra_def[rrd.stat_head->rra_cnt].
310 par[RRA_cdp_xff_val].u_val < 0.0
311 || rrd.rra_def[rrd.stat_head->rra_cnt].
312 par[RRA_cdp_xff_val].u_val >= 1.0)
313 rrd_set_error
314 ("Invalid xff: must be between 0 and 1");
315 break;
316 }
317 break;
318 case 2:
319 switch (cf_conv
320 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
321 case CF_HWPREDICT:
322 case CF_MHWPREDICT:
323 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].
324 u_val = atof(token);
325 if (atof(token) <= 0.0 || atof(token) >= 1.0)
326 rrd_set_error
327 ("Invalid alpha: must be between 0 and 1");
328 break;
329 case CF_DEVSEASONAL:
330 case CF_SEASONAL:
331 rrd.rra_def[rrd.stat_head->rra_cnt].
332 par[RRA_seasonal_gamma].u_val = atof(token);
333 if (atof(token) <= 0.0 || atof(token) >= 1.0)
334 rrd_set_error
335 ("Invalid gamma: must be between 0 and 1");
336 rrd.rra_def[rrd.stat_head->rra_cnt].
337 par[RRA_seasonal_smooth_idx].u_cnt =
338 hashed_name %
339 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt;
340 break;
341 case CF_FAILURES:
342 /* specifies the # of violations that constitutes the failure threshold */
343 rrd.rra_def[rrd.stat_head->rra_cnt].
344 par[RRA_failure_threshold].u_cnt = atoi(token);
345 if (atoi(token) < 1
346 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
347 rrd_set_error
348 ("Failure threshold is out of range %d, %d",
349 1, MAX_FAILURES_WINDOW_LEN);
350 break;
351 case CF_DEVPREDICT:
352 /* specifies the index (1-based) of CF_DEVSEASONAL array
353 * associated with this CF_DEVPREDICT array. */
354 rrd.rra_def[rrd.stat_head->rra_cnt].
355 par[RRA_dependent_rra_idx].u_cnt =
356 atoi(token) - 1;
357 break;
358 default:
359 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt =
360 atoi(token);
361 break;
362 }
363 break;
364 case 3:
365 switch (cf_conv
366 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
367 case CF_HWPREDICT:
368 case CF_MHWPREDICT:
369 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].
370 u_val = atof(token);
371 if (atof(token) < 0.0 || atof(token) > 1.0)
372 rrd_set_error
373 ("Invalid beta: must be between 0 and 1");
374 break;
375 case CF_DEVSEASONAL:
376 case CF_SEASONAL:
377 /* specifies the index (1-based) of CF_HWPREDICT array
378 * associated with this CF_DEVSEASONAL or CF_SEASONAL array.
379 * */
380 rrd.rra_def[rrd.stat_head->rra_cnt].
381 par[RRA_dependent_rra_idx].u_cnt =
382 atoi(token) - 1;
383 break;
384 case CF_FAILURES:
385 /* specifies the window length */
386 rrd.rra_def[rrd.stat_head->rra_cnt].
387 par[RRA_window_len].u_cnt = atoi(token);
388 if (atoi(token) < 1
389 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
390 rrd_set_error
391 ("Window length is out of range %d, %d", 1,
392 MAX_FAILURES_WINDOW_LEN);
393 /* verify that window length exceeds the failure threshold */
394 if (rrd.rra_def[rrd.stat_head->rra_cnt].
395 par[RRA_window_len].u_cnt <
396 rrd.rra_def[rrd.stat_head->rra_cnt].
397 par[RRA_failure_threshold].u_cnt)
398 rrd_set_error
399 ("Window length is shorter than the failure threshold");
400 break;
401 case CF_DEVPREDICT:
402 /* shouldn't be any more arguments */
403 rrd_set_error
404 ("Unexpected extra argument for consolidation function DEVPREDICT");
405 break;
406 default:
407 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt =
408 atoi(token);
409 break;
410 }
411 break;
412 case 4:
413 switch (cf_conv
414 (rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam)) {
415 case CF_FAILURES:
416 /* specifies the index (1-based) of CF_DEVSEASONAL array
417 * associated with this CF_DEVFAILURES array. */
418 rrd.rra_def[rrd.stat_head->rra_cnt].
419 par[RRA_dependent_rra_idx].u_cnt =
420 atoi(token) - 1;
421 break;
422 case CF_HWPREDICT:
423 case CF_MHWPREDICT:
424 /* length of the associated CF_SEASONAL and CF_DEVSEASONAL arrays. */
425 period = atoi(token);
426 if (period >
427 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt)
428 rrd_set_error
429 ("Length of seasonal cycle exceeds length of HW prediction array");
430 break;
431 default:
432 /* shouldn't be any more arguments */
433 rrd_set_error
434 ("Unexpected extra argument for consolidation function %s",
435 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
436 break;
437 }
438 break;
439 case 5:
440 /* If we are here, this must be a CF_HWPREDICT RRA.
441 * Specifies the index (1-based) of CF_SEASONAL array
442 * associated with this CF_HWPREDICT array. If this argument
443 * is missing, then the CF_SEASONAL, CF_DEVSEASONAL, CF_DEVPREDICT,
444 * CF_FAILURES.
445 * arrays are created automatically. */
446 rrd.rra_def[rrd.stat_head->rra_cnt].
447 par[RRA_dependent_rra_idx].u_cnt = atoi(token) - 1;
448 break;
449 default:
450 /* should never get here */
451 rrd_set_error("Unknown error");
452 break;
453 } /* end switch */
454 if (rrd_test_error()) {
455 /* all errors are unrecoverable */
456 free(argvcopy);
457 rrd_free(&rrd);
458 return (-1);
459 }
460 token = strtok_r(NULL, ":", &tokptr);
461 token_idx++;
462 } /* end while */
463 free(argvcopy);
464 #ifdef DEBUG
465 fprintf(stderr,
466 "Creating RRA CF: %s, dep idx %lu, current idx %lu\n",
467 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam,
468 rrd.rra_def[rrd.stat_head->rra_cnt].
469 par[RRA_dependent_rra_idx].u_cnt, rrd.stat_head->rra_cnt);
470 #endif
471 /* should we create CF_SEASONAL, CF_DEVSEASONAL, and CF_DEVPREDICT? */
472 if ((cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) ==
473 CF_HWPREDICT
474 || cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) ==
475 CF_MHWPREDICT)
476 && rrd.rra_def[rrd.stat_head->rra_cnt].
477 par[RRA_dependent_rra_idx].u_cnt == rrd.stat_head->rra_cnt) {
478 #ifdef DEBUG
479 fprintf(stderr, "Creating HW contingent RRAs\n");
480 #endif
481 if (create_hw_contingent_rras(&rrd, period, hashed_name) ==
482 -1) {
483 rrd_set_error("creating contingent RRA");
484 rrd_free(&rrd);
485 return -1;
486 }
487 }
488 rrd.stat_head->rra_cnt++;
489 } else {
490 rrd_set_error("can't parse argument '%s'", argv[i]);
491 rrd_free(&rrd);
492 return -1;
493 }
494 }
497 if (rrd.stat_head->rra_cnt < 1) {
498 rrd_set_error("you must define at least one Round Robin Archive");
499 rrd_free(&rrd);
500 return (-1);
501 }
503 if (rrd.stat_head->ds_cnt < 1) {
504 rrd_set_error("you must define at least one Data Source");
505 rrd_free(&rrd);
506 return (-1);
507 }
508 return rrd_create_fn(filename, &rrd);
509 }
511 void parseGENERIC_DS(
512 const char *def,
513 rrd_t *rrd,
514 int ds_idx)
515 {
516 char minstr[DS_NAM_SIZE], maxstr[DS_NAM_SIZE];
517 char *old_locale;
518 /*
519 int temp;
521 temp = sscanf(def,"%lu:%18[^:]:%18[^:]",
522 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
523 minstr,maxstr);
524 */
525 old_locale = setlocale(LC_NUMERIC,"C");
526 if (sscanf(def, "%lu:%18[^:]:%18[^:]",
527 &(rrd->ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
528 minstr, maxstr) == 3) {
529 if (minstr[0] == 'U' && minstr[1] == 0)
530 rrd->ds_def[ds_idx].par[DS_min_val].u_val = DNAN;
531 else
532 rrd->ds_def[ds_idx].par[DS_min_val].u_val = atof(minstr);
534 if (maxstr[0] == 'U' && maxstr[1] == 0)
535 rrd->ds_def[ds_idx].par[DS_max_val].u_val = DNAN;
536 else
537 rrd->ds_def[ds_idx].par[DS_max_val].u_val = atof(maxstr);
539 if (!isnan(rrd->ds_def[ds_idx].par[DS_min_val].u_val) &&
540 !isnan(rrd->ds_def[ds_idx].par[DS_max_val].u_val) &&
541 rrd->ds_def[ds_idx].par[DS_min_val].u_val
542 >= rrd->ds_def[ds_idx].par[DS_max_val].u_val) {
543 rrd_set_error("min must be less than max in DS definition");
544 setlocale(LC_NUMERIC,old_locale);
545 return;
546 }
547 } else {
548 rrd_set_error("failed to parse data source %s", def);
549 }
550 setlocale(LC_NUMERIC,old_locale);
551 }
553 /* Create the CF_DEVPREDICT, CF_DEVSEASONAL, CF_SEASONAL, and CF_FAILURES RRAs
554 * associated with a CF_HWPREDICT RRA. */
555 int create_hw_contingent_rras(
556 rrd_t *rrd,
557 unsigned short period,
558 unsigned long hashed_name)
559 {
560 size_t old_size;
561 rra_def_t *current_rra;
563 /* save index to CF_HWPREDICT */
564 unsigned long hw_index = rrd->stat_head->rra_cnt;
566 /* advance the pointer */
567 (rrd->stat_head->rra_cnt)++;
568 /* allocate the memory for the 4 contingent RRAs */
569 old_size = sizeof(rra_def_t) * (rrd->stat_head->rra_cnt);
570 if ((rrd->rra_def = rrd_realloc(rrd->rra_def,
571 old_size + 4 * sizeof(rra_def_t))) ==
572 NULL) {
573 rrd_set_error("allocating rrd.rra_def");
574 return (-1);
575 }
576 /* clear memory */
577 memset(&(rrd->rra_def[rrd->stat_head->rra_cnt]), 0,
578 4 * sizeof(rra_def_t));
580 /* create the CF_SEASONAL RRA */
581 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
582 strcpy(current_rra->cf_nam, "SEASONAL");
583 current_rra->row_cnt = period;
584 current_rra->par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
585 current_rra->pdp_cnt = 1;
586 current_rra->par[RRA_seasonal_gamma].u_val =
587 rrd->rra_def[hw_index].par[RRA_hw_alpha].u_val;
588 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index;
589 rrd->rra_def[hw_index].par[RRA_dependent_rra_idx].u_cnt =
590 rrd->stat_head->rra_cnt;
592 /* create the CF_DEVSEASONAL RRA */
593 (rrd->stat_head->rra_cnt)++;
594 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
595 strcpy(current_rra->cf_nam, "DEVSEASONAL");
596 current_rra->row_cnt = period;
597 current_rra->par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
598 current_rra->pdp_cnt = 1;
599 current_rra->par[RRA_seasonal_gamma].u_val =
600 rrd->rra_def[hw_index].par[RRA_hw_alpha].u_val;
601 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index;
603 /* create the CF_DEVPREDICT RRA */
604 (rrd->stat_head->rra_cnt)++;
605 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
606 strcpy(current_rra->cf_nam, "DEVPREDICT");
607 current_rra->row_cnt = (rrd->rra_def[hw_index]).row_cnt;
608 current_rra->pdp_cnt = 1;
609 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index + 2; /* DEVSEASONAL */
611 /* create the CF_FAILURES RRA */
612 (rrd->stat_head->rra_cnt)++;
613 current_rra = &(rrd->rra_def[rrd->stat_head->rra_cnt]);
614 strcpy(current_rra->cf_nam, "FAILURES");
615 current_rra->row_cnt = period;
616 current_rra->pdp_cnt = 1;
617 current_rra->par[RRA_delta_pos].u_val = 2.0;
618 current_rra->par[RRA_delta_neg].u_val = 2.0;
619 current_rra->par[RRA_failure_threshold].u_cnt = 7;
620 current_rra->par[RRA_window_len].u_cnt = 9;
621 current_rra->par[RRA_dependent_rra_idx].u_cnt = hw_index + 2; /* DEVSEASONAL */
622 return 0;
623 }
625 /* create and empty rrd file according to the specs given */
627 int rrd_create_fn(
628 const char *file_name,
629 rrd_t *rrd)
630 {
631 unsigned long i, ii;
632 int rrd_file;
633 rrd_value_t *unknown;
634 int unkn_cnt;
635 rrd_file_t *rrd_file_dn;
636 rrd_t rrd_dn;
638 if ((rrd_file = open(file_name, O_WRONLY|O_CREAT|O_TRUNC,0666)) == NULL) {
639 rrd_set_error("creating '%s': %s", file_name, rrd_strerror(errno));
640 rrd_free(rrd);
641 return (-1);
642 }
644 write(rrd_file,rrd->stat_head, sizeof(stat_head_t));
646 write(rrd_file,rrd->ds_def, sizeof(ds_def_t)*rrd->stat_head->ds_cnt);
648 write(rrd_file,rrd->rra_def,
649 sizeof(rra_def_t)* rrd->stat_head->rra_cnt);
651 write(rrd_file,rrd->live_head, sizeof(live_head_t));
653 if ((rrd->pdp_prep = calloc(1, sizeof(pdp_prep_t))) == NULL) {
654 rrd_set_error("allocating pdp_prep");
655 rrd_free(rrd);
656 close(rrd_file);
657 return (-1);
658 }
660 strcpy(rrd->pdp_prep->last_ds, "UNKN");
662 rrd->pdp_prep->scratch[PDP_val].u_val = 0.0;
663 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt =
664 rrd->live_head->last_up % rrd->stat_head->pdp_step;
666 for (i = 0; i < rrd->stat_head->ds_cnt; i++)
667 write(rrd_file,rrd->pdp_prep, sizeof(pdp_prep_t));
669 if ((rrd->cdp_prep = calloc(1, sizeof(cdp_prep_t))) == NULL) {
670 rrd_set_error("allocating cdp_prep");
671 rrd_free(rrd);
672 close(rrd_file);
673 return (-1);
674 }
677 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
678 switch (cf_conv(rrd->rra_def[i].cf_nam)) {
679 case CF_HWPREDICT:
680 case CF_MHWPREDICT:
681 init_hwpredict_cdp(rrd->cdp_prep);
682 break;
683 case CF_SEASONAL:
684 case CF_DEVSEASONAL:
685 init_seasonal_cdp(rrd->cdp_prep);
686 break;
687 case CF_FAILURES:
688 /* initialize violation history to 0 */
689 for (ii = 0; ii < MAX_CDP_PAR_EN; ii++) {
690 /* We can zero everything out, by setting u_val to the
691 * NULL address. Each array entry in scratch is 8 bytes
692 * (a double), but u_cnt only accessed 4 bytes (long) */
693 rrd->cdp_prep->scratch[ii].u_val = 0.0;
694 }
695 break;
696 default:
697 /* can not be zero because we don't know anything ... */
698 rrd->cdp_prep->scratch[CDP_val].u_val = DNAN;
699 /* startup missing pdp count */
700 rrd->cdp_prep->scratch[CDP_unkn_pdp_cnt].u_cnt =
701 ((rrd->live_head->last_up -
702 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt)
703 % (rrd->stat_head->pdp_step
704 * rrd->rra_def[i].pdp_cnt)) / rrd->stat_head->pdp_step;
705 break;
706 }
708 for (ii = 0; ii < rrd->stat_head->ds_cnt; ii++) {
709 write(rrd_file,rrd->cdp_prep, sizeof(cdp_prep_t));
710 }
711 }
713 /* now, we must make sure that the rest of the rrd
714 struct is properly initialized */
716 if ((rrd->rra_ptr = calloc(1, sizeof(rra_ptr_t))) == NULL) {
717 rrd_set_error("allocating rra_ptr");
718 rrd_free(rrd);
719 close(rrd_file);
720 return (-1);
721 }
723 /* changed this initialization to be consistent with
724 * rrd_restore. With the old value (0), the first update
725 * would occur for cur_row = 1 because rrd_update increments
726 * the pointer a priori. */
727 for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
728 rrd->rra_ptr->cur_row = rrd->rra_def[i].row_cnt - 1;
729 write(rrd_file,rrd->rra_ptr, sizeof(rra_ptr_t));
730 }
732 /* write the empty data area */
733 if ((unknown = (rrd_value_t *) malloc(512 * sizeof(rrd_value_t))) == NULL) {
734 rrd_set_error("allocating unknown");
735 rrd_free(rrd);
736 close(rrd_file);
737 return (-1);
738 }
739 for (i = 0; i < 512; ++i)
740 unknown[i] = DNAN;
742 unkn_cnt = 0;
743 for (i = 0; i < rrd->stat_head->rra_cnt; i++)
744 unkn_cnt += rrd->stat_head->ds_cnt * rrd->rra_def[i].row_cnt;
746 while (unkn_cnt > 0) {
747 write(rrd_file,unknown, sizeof(rrd_value_t) * min(unkn_cnt, 512));
749 unkn_cnt -= 512;
750 }
751 free(unknown);
752 fdatasync(rrd_file);
753 rrd_free(rrd);
754 if ( close(rrd_file) == -1 ) {
755 rrd_set_error("creating rrd: %s", rrd_strerror(errno));
756 return -1;
757 }
758 /* flush all we don't need out of the cache */
759 rrd_file_dn = rrd_open(file_name, &rrd_dn, RRD_READONLY);
760 rrd_dontneed(rrd_file_dn,&rrd_dn);
761 rrd_close(rrd_file_dn);
762 return (0);
763 }