1 /*****************************************************************************
2 * RRDtool 1.1.x Copyright Tobias Oetiker, 1997 - 2002
3 *****************************************************************************
4 * rrd_create.c creates new rrds
5 *****************************************************************************/
7 #include "rrd_tool.h"
8 #include "rrd_rpncalc.h"
9 #include "rrd_hw.h"
11 #include "rrd_is_thread_safe.h"
13 unsigned long FnvHash(char *str);
14 int create_hw_contingent_rras(rrd_t *rrd, unsigned short period, unsigned long hashed_name);
15 void parseGENERIC_DS(char *def,rrd_t *rrd, int ds_idx);
17 int
18 rrd_create(int argc, char **argv)
19 {
20 time_t last_up = time(NULL)-10;
21 unsigned long pdp_step = 300;
22 struct time_value last_up_tv;
23 char *parsetime_error = NULL;
24 long long_tmp;
25 int rc;
27 while (1){
28 static struct option long_options[] =
29 {
30 {"start", required_argument, 0, 'b'},
31 {"step", required_argument,0,'s'},
32 {0,0,0,0}
33 };
34 int option_index = 0;
35 int opt;
36 opt = getopt_long(argc, argv, "b:s:",
37 long_options, &option_index);
39 if (opt == EOF)
40 break;
42 switch(opt) {
43 case 'b':
44 if ((parsetime_error = parsetime(optarg, &last_up_tv))) {
45 rrd_set_error("start time: %s", parsetime_error );
46 return(-1);
47 }
48 if (last_up_tv.type == RELATIVE_TO_END_TIME ||
49 last_up_tv.type == RELATIVE_TO_START_TIME) {
50 rrd_set_error("specifying time relative to the 'start' "
51 "or 'end' makes no sense here");
52 return(-1);
53 }
55 last_up = mktime(&last_up_tv.tm) + last_up_tv.offset;
57 if (last_up < 3600*24*365*10){
58 rrd_set_error("the first entry to the RRD should be after 1980");
59 return(-1);
60 }
61 break;
63 case 's':
64 long_tmp = atol(optarg);
65 if (long_tmp < 1){
66 rrd_set_error("step size should be no less than one second");
67 return(-1);
68 }
69 pdp_step = long_tmp;
70 break;
72 case '?':
73 if (optopt != 0)
74 rrd_set_error("unknown option '%c'", optopt);
75 else
76 rrd_set_error("unknown option '%s'",argv[optind-1]);
77 return(-1);
78 }
79 }
81 rc = rrd_create_r(argv[optind],
82 pdp_step, last_up,
83 argc - optind - 1, argv + optind + 1);
85 return rc;
86 }
88 /* #define DEBUG */
89 int
90 rrd_create_r(char *filename,
91 unsigned long pdp_step, time_t last_up,
92 int argc, char **argv)
93 {
94 rrd_t rrd;
95 long i;
96 int offset;
97 char *token;
98 unsigned short token_idx, error_flag, period=0;
99 unsigned long hashed_name;
101 /* init rrd clean */
102 rrd_init(&rrd);
103 /* static header */
104 if((rrd.stat_head = calloc(1,sizeof(stat_head_t)))==NULL){
105 rrd_set_error("allocating rrd.stat_head");
106 return(-1);
107 }
109 /* live header */
110 if((rrd.live_head = calloc(1,sizeof(live_head_t)))==NULL){
111 rrd_set_error("allocating rrd.live_head");
112 return(-1);
113 }
115 /* set some defaults */
116 strcpy(rrd.stat_head->cookie,RRD_COOKIE);
117 /* assume the will be version 1 compatible */
118 strcpy(rrd.stat_head->version,"0001");
119 rrd.stat_head->float_cookie = FLOAT_COOKIE;
120 rrd.stat_head->ds_cnt = 0; /* this will be adjusted later */
121 rrd.stat_head->rra_cnt = 0; /* ditto */
122 rrd.stat_head->pdp_step = pdp_step; /* 5 minute default */
124 /* a default value */
125 rrd.ds_def = NULL;
126 rrd.rra_def = NULL;
128 rrd.live_head->last_up = last_up;
130 /* optind points to the first non-option command line arg,
131 * in this case, the file name. */
132 /* Compute the FNV hash value (used by SEASONAL and DEVSEASONAL
133 * arrays. */
134 hashed_name = FnvHash(filename);
135 for(i=0;i<argc;i++){
136 unsigned int ii;
137 if (strncmp(argv[i],"DS:",3)==0){
138 size_t old_size = sizeof(ds_def_t)*(rrd.stat_head->ds_cnt);
139 if((rrd.ds_def = rrd_realloc(rrd.ds_def,
140 old_size+sizeof(ds_def_t)))==NULL){
141 rrd_set_error("allocating rrd.ds_def");
142 rrd_free(&rrd);
143 return(-1);
144 }
145 memset(&rrd.ds_def[rrd.stat_head->ds_cnt], 0, sizeof(ds_def_t));
146 /* extract the name and type */
147 if (sscanf(&argv[i][3],
148 DS_NAM_FMT ":" DST_FMT ":%n",
149 rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
150 rrd.ds_def[rrd.stat_head->ds_cnt].dst,&offset) == 2)
151 {
152 /* check for duplicate datasource names */
153 for(ii=0;ii<rrd.stat_head->ds_cnt;ii++)
154 if(strcmp(rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
155 rrd.ds_def[ii].ds_nam) == 0){
156 rrd_set_error("Duplicate DS name: %s",rrd.ds_def[ii].ds_nam);
157 }
158 } else {
159 rrd_set_error("invalid DS format");
160 }
162 /* parse the remainder of the arguments */
163 switch(dst_conv(rrd.ds_def[rrd.stat_head->ds_cnt].dst))
164 {
165 case DST_COUNTER:
166 case DST_ABSOLUTE:
167 case DST_GAUGE:
168 case DST_DERIVE:
169 parseGENERIC_DS(&argv[i][offset+3],&rrd, rrd.stat_head->ds_cnt);
170 break;
171 case DST_CDEF:
172 parseCDEF_DS(&argv[i][offset+3],&rrd, rrd.stat_head->ds_cnt);
173 break;
174 default:
175 rrd_set_error("invalid DS type specified");
176 break;
177 }
179 if (rrd_test_error()) {
180 rrd_free(&rrd);
181 return -1;
182 }
183 rrd.stat_head -> ds_cnt++;
184 } else if (strncmp(argv[i],"RRA:",3)==0){
185 char *tokptr;
186 size_t old_size = sizeof(rra_def_t)*(rrd.stat_head->rra_cnt);
187 if((rrd.rra_def = rrd_realloc(rrd.rra_def,
188 old_size+sizeof(rra_def_t)))==NULL)
189 {
190 rrd_set_error("allocating rrd.rra_def");
191 rrd_free(&rrd);
192 return(-1);
193 }
194 memset(&rrd.rra_def[rrd.stat_head->rra_cnt], 0, sizeof(rra_def_t));
196 token = strtok_r(&argv[i][4],":", &tokptr);
197 token_idx = error_flag = 0;
198 while (token != NULL)
199 {
200 switch(token_idx)
201 {
202 case 0:
203 if (sscanf(token,CF_NAM_FMT,
204 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) != 1)
205 rrd_set_error("Failed to parse CF name");
206 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
207 {
208 case CF_HWPREDICT:
209 /* initialize some parameters */
210 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].u_val = 0.1;
211 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].u_val = 1.0/288;
212 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
213 rrd.stat_head -> rra_cnt;
214 /* need to mark the file version */
215 strcpy(rrd.stat_head->version,RRD_VERSION);
216 break;
217 case CF_DEVSEASONAL:
218 case CF_SEASONAL:
219 /* initialize some parameters */
220 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_gamma].u_val = 0.1;
221 /* fall through */
222 case CF_DEVPREDICT:
223 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt = -1;
224 break;
225 case CF_FAILURES:
226 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_delta_pos].u_val = 2.0;
227 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_delta_neg].u_val = 2.0;
228 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt = 3;
229 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt = 2;
230 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt = -1;
231 break;
232 /* invalid consolidation function */
233 case -1:
234 rrd_set_error("Unrecognized consolidation function %s",
235 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
236 default:
237 break;
238 }
239 /* default: 1 pdp per cdp */
240 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = 1;
241 break;
242 case 1:
243 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
244 {
245 case CF_HWPREDICT:
246 case CF_DEVSEASONAL:
247 case CF_SEASONAL:
248 case CF_DEVPREDICT:
249 case CF_FAILURES:
250 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = atoi(token);
251 break;
252 default:
253 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val = atof(token);
254 if (rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val<0.0 ||
255 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val>=1.0)
256 rrd_set_error("Invalid xff: must be between 0 and 1");
257 break;
258 }
259 break;
260 case 2:
261 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
262 {
263 case CF_HWPREDICT:
264 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].u_val = atof(token);
265 if (atof(token) <= 0.0 || atof(token) >= 1.0)
266 rrd_set_error("Invalid alpha: must be between 0 and 1");
267 break;
268 case CF_DEVSEASONAL:
269 case CF_SEASONAL:
270 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_gamma].u_val =
271 atof(token);
272 if (atof(token) <= 0.0 || atof(token) >= 1.0)
273 rrd_set_error("Invalid gamma: must be between 0 and 1");
274 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_smooth_idx].u_cnt
275 = hashed_name % rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt;
276 break;
277 case CF_FAILURES:
278 /* specifies the # of violations that constitutes the failure threshold */
279 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt =
280 atoi(token);
281 if (atoi(token) < 1 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
282 rrd_set_error("Failure threshold is out of range %d, %d",1,
283 MAX_FAILURES_WINDOW_LEN);
284 break;
285 case CF_DEVPREDICT:
286 /* specifies the index (1-based) of CF_DEVSEASONAL array
287 * associated with this CF_DEVPREDICT array. */
288 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
289 atoi(token) - 1;
290 break;
291 default:
292 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = atoi(token);
293 break;
294 }
295 break;
296 case 3:
297 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
298 {
299 case CF_HWPREDICT:
300 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].u_val = atof(token);
301 if (atof(token) < 0.0 || atof(token) > 1.0)
302 rrd_set_error("Invalid beta: must be between 0 and 1");
303 break;
304 case CF_DEVSEASONAL:
305 case CF_SEASONAL:
306 /* specifies the index (1-based) of CF_HWPREDICT array
307 * associated with this CF_DEVSEASONAL or CF_SEASONAL array.
308 * */
309 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
310 atoi(token) - 1;
311 break;
312 case CF_FAILURES:
313 /* specifies the window length */
314 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt =
315 atoi(token);
316 if (atoi(token) < 1 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
317 rrd_set_error("Window length is out of range %d, %d",1,
318 MAX_FAILURES_WINDOW_LEN);
319 /* verify that window length exceeds the failure threshold */
320 if (rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt <
321 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt)
322 rrd_set_error("Window length is shorter than the failure threshold");
323 break;
324 case CF_DEVPREDICT:
325 /* shouldn't be any more arguments */
326 rrd_set_error("Unexpected extra argument for consolidation function DEVPREDICT");
327 break;
328 default:
329 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = atoi(token);
330 break;
331 }
332 break;
333 case 4:
334 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
335 {
336 case CF_FAILURES:
337 /* specifies the index (1-based) of CF_DEVSEASONAL array
338 * associated with this CF_DEVFAILURES array. */
339 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
340 atoi(token) - 1;
341 break;
342 case CF_HWPREDICT:
343 /* length of the associated CF_SEASONAL and CF_DEVSEASONAL arrays. */
344 period = atoi(token);
345 if (period > rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt)
346 rrd_set_error("Length of seasonal cycle exceeds length of HW prediction array");
347 break;
348 default:
349 /* shouldn't be any more arguments */
350 rrd_set_error("Unexpected extra argument for consolidation function %s",
351 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
352 break;
353 }
354 break;
355 case 5:
356 /* If we are here, this must be a CF_HWPREDICT RRA.
357 * Specifies the index (1-based) of CF_SEASONAL array
358 * associated with this CF_HWPREDICT array. If this argument
359 * is missing, then the CF_SEASONAL, CF_DEVSEASONAL, CF_DEVPREDICT,
360 * CF_FAILURES.
361 * arrays are created automatically. */
362 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
363 atoi(token) - 1;
364 break;
365 default:
366 /* should never get here */
367 rrd_set_error("Unknown error");
368 break;
369 } /* end switch */
370 if (rrd_test_error())
371 {
372 /* all errors are unrecoverable */
373 rrd_free(&rrd);
374 return (-1);
375 }
376 token = strtok_r(NULL,":", &tokptr);
377 token_idx++;
378 } /* end while */
379 #ifdef DEBUG
380 fprintf(stderr,"Creating RRA CF: %s, dep idx %lu, current idx %lu\n",
381 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam,
382 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt,
383 rrd.stat_head -> rra_cnt);
384 #endif
385 /* should we create CF_SEASONAL, CF_DEVSEASONAL, and CF_DEVPREDICT? */
386 if (cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) == CF_HWPREDICT
387 && rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt
388 == rrd.stat_head -> rra_cnt)
389 {
390 #ifdef DEBUG
391 fprintf(stderr,"Creating HW contingent RRAs\n");
392 #endif
393 if (create_hw_contingent_rras(&rrd,period,hashed_name) == -1) {
394 rrd_free(&rrd);
395 return -1;
396 }
397 }
398 rrd.stat_head->rra_cnt++;
399 } else {
400 rrd_set_error("can't parse argument '%s'",argv[i]);
401 rrd_free(&rrd);
402 return -1;
403 }
404 }
407 if (rrd.stat_head->rra_cnt < 1){
408 rrd_set_error("you must define at least one Round Robin Archive");
409 rrd_free(&rrd);
410 return(-1);
411 }
413 if (rrd.stat_head->ds_cnt < 1){
414 rrd_set_error("you must define at least one Data Source");
415 rrd_free(&rrd);
416 return(-1);
417 }
418 return rrd_create_fn(filename, &rrd);
419 }
421 void parseGENERIC_DS(char *def,rrd_t *rrd, int ds_idx)
422 {
423 char minstr[DS_NAM_SIZE], maxstr[DS_NAM_SIZE];
424 /*
425 int temp;
427 temp = sscanf(def,"%lu:%18[^:]:%18[^:]",
428 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
429 minstr,maxstr);
430 */
431 if (sscanf(def,"%lu:%18[^:]:%18[^:]",
432 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
433 minstr,maxstr) == 3)
434 {
435 if (minstr[0] == 'U' && minstr[1] == 0)
436 rrd -> ds_def[ds_idx].par[DS_min_val].u_val = DNAN;
437 else
438 rrd -> ds_def[ds_idx].par[DS_min_val].u_val = atof(minstr);
440 if (maxstr[0] == 'U' && maxstr[1] == 0)
441 rrd -> ds_def[ds_idx].par[DS_max_val].u_val = DNAN;
442 else
443 rrd -> ds_def[ds_idx].par[DS_max_val].u_val = atof(maxstr);
445 if (! isnan(rrd -> ds_def[ds_idx].par[DS_min_val].u_val) &&
446 ! isnan(rrd -> ds_def[ds_idx].par[DS_max_val].u_val) &&
447 rrd -> ds_def[ds_idx].par[DS_min_val].u_val
448 >= rrd -> ds_def[ds_idx].par[DS_max_val].u_val ) {
449 rrd_set_error("min must be less than max in DS definition");
450 return;
451 }
452 } else {
453 rrd_set_error("failed to parse data source %s", def);
454 }
455 }
457 /* Create the CF_DEVPREDICT, CF_DEVSEASONAL, CF_SEASONAL, and CF_FAILURES RRAs
458 * associated with a CF_HWPREDICT RRA. */
459 int
460 create_hw_contingent_rras(rrd_t *rrd, unsigned short period, unsigned long hashed_name)
461 {
462 size_t old_size;
463 rra_def_t* current_rra;
465 /* save index to CF_HWPREDICT */
466 unsigned long hw_index = rrd -> stat_head -> rra_cnt;
467 /* advance the pointer */
468 (rrd -> stat_head -> rra_cnt)++;
469 /* allocate the memory for the 4 contingent RRAs */
470 old_size = sizeof(rra_def_t)*(rrd -> stat_head->rra_cnt);
471 if ((rrd -> rra_def = rrd_realloc(rrd -> rra_def,
472 old_size+4*sizeof(rra_def_t)))==NULL)
473 {
474 rrd_set_error("allocating rrd.rra_def");
475 return(-1);
476 }
477 /* clear memory */
478 memset(&(rrd -> rra_def[rrd -> stat_head->rra_cnt]), 0, 4*sizeof(rra_def_t));
480 /* create the CF_SEASONAL RRA */
481 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
482 strcpy(current_rra -> cf_nam,"SEASONAL");
483 current_rra -> row_cnt = period;
484 current_rra -> par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
485 current_rra -> pdp_cnt = 1;
486 current_rra -> par[RRA_seasonal_gamma].u_val =
487 rrd -> rra_def[hw_index].par[RRA_hw_alpha].u_val;
488 current_rra -> par[RRA_dependent_rra_idx].u_cnt = hw_index;
489 rrd -> rra_def[hw_index].par[RRA_dependent_rra_idx].u_cnt = rrd -> stat_head -> rra_cnt;
491 /* create the CF_DEVSEASONAL RRA */
492 (rrd -> stat_head -> rra_cnt)++;
493 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
494 strcpy(current_rra -> cf_nam,"DEVSEASONAL");
495 current_rra -> row_cnt = period;
496 current_rra -> par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
497 current_rra -> pdp_cnt = 1;
498 current_rra -> par[RRA_seasonal_gamma].u_val =
499 rrd -> rra_def[hw_index].par[RRA_hw_alpha].u_val;
500 current_rra -> par[RRA_dependent_rra_idx].u_cnt = hw_index;
502 /* create the CF_DEVPREDICT RRA */
503 (rrd -> stat_head -> rra_cnt)++;
504 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
505 strcpy(current_rra -> cf_nam,"DEVPREDICT");
506 current_rra -> row_cnt = (rrd -> rra_def[hw_index]).row_cnt;
507 current_rra -> pdp_cnt = 1;
508 current_rra -> par[RRA_dependent_rra_idx].u_cnt
509 = hw_index + 2; /* DEVSEASONAL */
511 /* create the CF_FAILURES RRA */
512 (rrd -> stat_head -> rra_cnt)++;
513 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
514 strcpy(current_rra -> cf_nam,"FAILURES");
515 current_rra -> row_cnt = period;
516 current_rra -> pdp_cnt = 1;
517 current_rra -> par[RRA_delta_pos].u_val = 2.0;
518 current_rra -> par[RRA_delta_neg].u_val = 2.0;
519 current_rra -> par[RRA_failure_threshold].u_cnt = 7;
520 current_rra -> par[RRA_window_len].u_cnt = 9;
521 current_rra -> par[RRA_dependent_rra_idx].u_cnt =
522 hw_index + 2; /* DEVSEASONAL */
523 return 0;
524 }
526 /* create and empty rrd file according to the specs given */
528 int
529 rrd_create_fn(char *file_name, rrd_t *rrd)
530 {
531 unsigned long i,ii;
532 FILE *rrd_file;
533 rrd_value_t unknown = DNAN ;
535 if ((rrd_file = fopen(file_name,"wb")) == NULL ) {
536 rrd_set_error("creating '%s': %s",file_name, rrd_strerror(errno));
537 free(rrd->stat_head);
538 free(rrd->ds_def);
539 free(rrd->rra_def);
540 return(-1);
541 }
543 fwrite(rrd->stat_head,
544 sizeof(stat_head_t), 1, rrd_file);
546 fwrite(rrd->ds_def,
547 sizeof(ds_def_t), rrd->stat_head->ds_cnt, rrd_file);
549 fwrite(rrd->rra_def,
550 sizeof(rra_def_t), rrd->stat_head->rra_cnt, rrd_file);
552 fwrite(rrd->live_head,
553 sizeof(live_head_t),1, rrd_file);
555 if((rrd->pdp_prep = calloc(1,sizeof(pdp_prep_t))) == NULL){
556 rrd_set_error("allocating pdp_prep");
557 rrd_free(rrd);
558 fclose(rrd_file);
559 return(-1);
560 }
562 strcpy(rrd->pdp_prep->last_ds,"UNKN");
564 rrd->pdp_prep->scratch[PDP_val].u_val = 0.0;
565 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt =
566 rrd->live_head->last_up % rrd->stat_head->pdp_step;
568 for(i=0; i < rrd->stat_head->ds_cnt; i++)
569 fwrite( rrd->pdp_prep,sizeof(pdp_prep_t),1,rrd_file);
571 if((rrd->cdp_prep = calloc(1,sizeof(cdp_prep_t))) == NULL){
572 rrd_set_error("allocating cdp_prep");
573 rrd_free(rrd);
574 fclose(rrd_file);
575 return(-1);
576 }
579 for(i=0; i < rrd->stat_head->rra_cnt; i++) {
580 switch (cf_conv(rrd->rra_def[i].cf_nam))
581 {
582 case CF_HWPREDICT:
583 init_hwpredict_cdp(rrd->cdp_prep);
584 break;
585 case CF_SEASONAL:
586 case CF_DEVSEASONAL:
587 init_seasonal_cdp(rrd->cdp_prep);
588 break;
589 case CF_FAILURES:
590 /* initialize violation history to 0 */
591 for (ii = 0; ii < MAX_CDP_PAR_EN; ii++)
592 {
593 /* We can zero everything out, by setting u_val to the
594 * NULL address. Each array entry in scratch is 8 bytes
595 * (a double), but u_cnt only accessed 4 bytes (long) */
596 rrd->cdp_prep->scratch[ii].u_val = 0.0;
597 }
598 break;
599 default:
600 /* can not be zero because we don't know anything ... */
601 rrd->cdp_prep->scratch[CDP_val].u_val = DNAN;
602 /* startup missing pdp count */
603 rrd->cdp_prep->scratch[CDP_unkn_pdp_cnt].u_cnt =
604 ((rrd->live_head->last_up -
605 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt)
606 % (rrd->stat_head->pdp_step
607 * rrd->rra_def[i].pdp_cnt)) / rrd->stat_head->pdp_step;
608 break;
609 }
611 for(ii=0; ii < rrd->stat_head->ds_cnt; ii++)
612 {
613 fwrite( rrd->cdp_prep,sizeof(cdp_prep_t),1,rrd_file);
614 }
615 }
617 /* now, we must make sure that the rest of the rrd
618 struct is properly initialized */
620 if((rrd->rra_ptr = calloc(1,sizeof(rra_ptr_t))) == NULL) {
621 rrd_set_error("allocating rra_ptr");
622 rrd_free(rrd);
623 fclose(rrd_file);
624 return(-1);
625 }
627 /* changed this initialization to be consistent with
628 * rrd_restore. With the old value (0), the first update
629 * would occur for cur_row = 1 because rrd_update increments
630 * the pointer a priori. */
631 for (i=0; i < rrd->stat_head->rra_cnt; i++)
632 {
633 rrd->rra_ptr->cur_row = rrd->rra_def[i].row_cnt - 1;
634 fwrite( rrd->rra_ptr, sizeof(rra_ptr_t),1,rrd_file);
635 }
637 /* write the empty data area */
638 for(i=0;
639 i < rrd->stat_head->rra_cnt;
640 i++)
641 {
642 for(ii=0;
643 ii < rrd->rra_def[i].row_cnt
644 * rrd->stat_head->ds_cnt;
645 ii++){
646 fwrite(&unknown,sizeof(rrd_value_t),1,rrd_file);
647 }
648 }
650 /* lets see if we had an error */
651 if(ferror(rrd_file)){
652 rrd_set_error("a file error occurred while creating '%s'",file_name);
653 fclose(rrd_file);
654 rrd_free(rrd);
655 return(-1);
656 }
658 fclose(rrd_file);
659 rrd_free(rrd);
660 return (0);
661 }