78f52d629636a6120b786bf7c086a9b333558de9
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 rrd_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 strcpy(rrd.stat_head->version,RRD_VERSION);
118 rrd.stat_head->float_cookie = FLOAT_COOKIE;
119 rrd.stat_head->ds_cnt = 0; /* this will be adjusted later */
120 rrd.stat_head->rra_cnt = 0; /* ditto */
121 rrd.stat_head->pdp_step = pdp_step; /* 5 minute default */
123 /* a default value */
124 rrd.ds_def = NULL;
125 rrd.rra_def = NULL;
127 rrd.live_head->last_up = last_up;
129 /* optind points to the first non-option command line arg,
130 * in this case, the file name. */
131 /* Compute the FNV hash value (used by SEASONAL and DEVSEASONAL
132 * arrays. */
133 hashed_name = FnvHash(filename);
134 for(i=0;i<argc;i++){
135 unsigned int ii;
136 if (strncmp(argv[i],"DS:",3)==0){
137 size_t old_size = sizeof(ds_def_t)*(rrd.stat_head->ds_cnt);
138 if((rrd.ds_def = rrd_realloc(rrd.ds_def,
139 old_size+sizeof(ds_def_t)))==NULL){
140 rrd_set_error("allocating rrd.ds_def");
141 rrd_free(&rrd);
142 return(-1);
143 }
144 memset(&rrd.ds_def[rrd.stat_head->ds_cnt], 0, sizeof(ds_def_t));
145 /* extract the name and type */
146 if (sscanf(&argv[i][3],
147 DS_NAM_FMT ":" DST_FMT ":%n",
148 rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
149 rrd.ds_def[rrd.stat_head->ds_cnt].dst,&offset) == 2)
150 {
151 /* check for duplicate datasource names */
152 for(ii=0;ii<rrd.stat_head->ds_cnt;ii++)
153 if(strcmp(rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
154 rrd.ds_def[ii].ds_nam) == 0){
155 rrd_set_error("Duplicate DS name: %s",rrd.ds_def[ii].ds_nam);
156 }
157 } else {
158 rrd_set_error("invalid DS format");
159 }
161 /* parse the remainder of the arguments */
162 switch(dst_conv(rrd.ds_def[rrd.stat_head->ds_cnt].dst))
163 {
164 case DST_COUNTER:
165 case DST_ABSOLUTE:
166 case DST_GAUGE:
167 case DST_DERIVE:
168 parseGENERIC_DS(&argv[i][offset+3],&rrd, rrd.stat_head->ds_cnt);
169 break;
170 case DST_CDEF:
171 parseCDEF_DS(&argv[i][offset+3],&rrd, rrd.stat_head->ds_cnt);
172 break;
173 default:
174 rrd_set_error("invalid DS type specified");
175 break;
176 }
178 if (rrd_test_error()) {
179 rrd_free(&rrd);
180 return -1;
181 }
182 rrd.stat_head -> ds_cnt++;
183 } else if (strncmp(argv[i],"RRA:",3)==0){
184 char *tokptr;
185 size_t old_size = sizeof(rra_def_t)*(rrd.stat_head->rra_cnt);
186 if((rrd.rra_def = rrd_realloc(rrd.rra_def,
187 old_size+sizeof(rra_def_t)))==NULL)
188 {
189 rrd_set_error("allocating rrd.rra_def");
190 rrd_free(&rrd);
191 return(-1);
192 }
193 memset(&rrd.rra_def[rrd.stat_head->rra_cnt], 0, sizeof(rra_def_t));
195 token = strtok_r(&argv[i][4],":", &tokptr);
196 token_idx = error_flag = 0;
197 while (token != NULL)
198 {
199 switch(token_idx)
200 {
201 case 0:
202 if (sscanf(token,CF_NAM_FMT,
203 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) != 1)
204 rrd_set_error("Failed to parse CF name");
205 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
206 {
207 case CF_HWPREDICT:
208 /* initialize some parameters */
209 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].u_val = 0.1;
210 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].u_val = 1.0/288;
211 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
212 rrd.stat_head -> rra_cnt;
213 break;
214 case CF_DEVSEASONAL:
215 case CF_SEASONAL:
216 /* initialize some parameters */
217 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_gamma].u_val = 0.1;
218 /* fall through */
219 case CF_DEVPREDICT:
220 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt = -1;
221 break;
222 case CF_FAILURES:
223 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_delta_pos].u_val = 2.0;
224 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_delta_neg].u_val = 2.0;
225 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt = 3;
226 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt = 2;
227 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt = -1;
228 break;
229 /* invalid consolidation function */
230 case -1:
231 rrd_set_error("Unrecognized consolidation function %s",
232 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
233 default:
234 break;
235 }
236 /* default: 1 pdp per cdp */
237 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = 1;
238 break;
239 case 1:
240 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
241 {
242 case CF_HWPREDICT:
243 case CF_DEVSEASONAL:
244 case CF_SEASONAL:
245 case CF_DEVPREDICT:
246 case CF_FAILURES:
247 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = atoi(token);
248 break;
249 default:
250 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val = atof(token);
251 if (rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val<0.0 ||
252 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val>=1.0)
253 rrd_set_error("Invalid xff: must be between 0 and 1");
254 break;
255 }
256 break;
257 case 2:
258 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
259 {
260 case CF_HWPREDICT:
261 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].u_val = atof(token);
262 if (atof(token) <= 0.0 || atof(token) >= 1.0)
263 rrd_set_error("Invalid alpha: must be between 0 and 1");
264 break;
265 case CF_DEVSEASONAL:
266 case CF_SEASONAL:
267 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_gamma].u_val =
268 atof(token);
269 if (atof(token) <= 0.0 || atof(token) >= 1.0)
270 rrd_set_error("Invalid gamma: must be between 0 and 1");
271 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_smooth_idx].u_cnt
272 = hashed_name % rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt;
273 break;
274 case CF_FAILURES:
275 /* specifies the # of violations that constitutes the failure threshold */
276 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt =
277 atoi(token);
278 if (atoi(token) < 1 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
279 rrd_set_error("Failure threshold is out of range %d, %d",1,
280 MAX_FAILURES_WINDOW_LEN);
281 break;
282 case CF_DEVPREDICT:
283 /* specifies the index (1-based) of CF_DEVSEASONAL array
284 * associated with this CF_DEVPREDICT array. */
285 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
286 atoi(token) - 1;
287 break;
288 default:
289 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = atoi(token);
290 break;
291 }
292 break;
293 case 3:
294 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
295 {
296 case CF_HWPREDICT:
297 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].u_val = atof(token);
298 if (atof(token) < 0.0 || atof(token) > 1.0)
299 rrd_set_error("Invalid beta: must be between 0 and 1");
300 break;
301 case CF_DEVSEASONAL:
302 case CF_SEASONAL:
303 /* specifies the index (1-based) of CF_HWPREDICT array
304 * associated with this CF_DEVSEASONAL or CF_SEASONAL array.
305 * */
306 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
307 atoi(token) - 1;
308 break;
309 case CF_FAILURES:
310 /* specifies the window length */
311 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt =
312 atoi(token);
313 if (atoi(token) < 1 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
314 rrd_set_error("Window length is out of range %d, %d",1,
315 MAX_FAILURES_WINDOW_LEN);
316 /* verify that window length exceeds the failure threshold */
317 if (rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt <
318 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt)
319 rrd_set_error("Window length is shorter than the failure threshold");
320 break;
321 case CF_DEVPREDICT:
322 /* shouldn't be any more arguments */
323 rrd_set_error("Unexpected extra argument for consolidation function DEVPREDICT");
324 break;
325 default:
326 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = atoi(token);
327 break;
328 }
329 break;
330 case 4:
331 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
332 {
333 case CF_FAILURES:
334 /* specifies the index (1-based) of CF_DEVSEASONAL array
335 * associated with this CF_DEVFAILURES array. */
336 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
337 atoi(token) - 1;
338 break;
339 case CF_HWPREDICT:
340 /* length of the associated CF_SEASONAL and CF_DEVSEASONAL arrays. */
341 period = atoi(token);
342 if (period > rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt)
343 rrd_set_error("Length of seasonal cycle exceeds length of HW prediction array");
344 break;
345 default:
346 /* shouldn't be any more arguments */
347 rrd_set_error("Unexpected extra argument for consolidation function %s",
348 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
349 break;
350 }
351 break;
352 case 5:
353 /* If we are here, this must be a CF_HWPREDICT RRA.
354 * Specifies the index (1-based) of CF_SEASONAL array
355 * associated with this CF_HWPREDICT array. If this argument
356 * is missing, then the CF_SEASONAL, CF_DEVSEASONAL, CF_DEVPREDICT,
357 * CF_FAILURES.
358 * arrays are created automatically. */
359 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
360 atoi(token) - 1;
361 break;
362 default:
363 /* should never get here */
364 rrd_set_error("Unknown error");
365 break;
366 } /* end switch */
367 if (rrd_test_error())
368 {
369 /* all errors are unrecoverable */
370 rrd_free(&rrd);
371 return (-1);
372 }
373 token = strtok_r(NULL,":", &tokptr);
374 token_idx++;
375 } /* end while */
376 #ifdef DEBUG
377 fprintf(stderr,"Creating RRA CF: %s, dep idx %lu, current idx %lu\n",
378 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam,
379 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt,
380 rrd.stat_head -> rra_cnt);
381 #endif
382 /* should we create CF_SEASONAL, CF_DEVSEASONAL, and CF_DEVPREDICT? */
383 if (cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) == CF_HWPREDICT
384 && rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt
385 == rrd.stat_head -> rra_cnt)
386 {
387 #ifdef DEBUG
388 fprintf(stderr,"Creating HW contingent RRAs\n");
389 #endif
390 if (create_hw_contingent_rras(&rrd,period,hashed_name) == -1) {
391 rrd_free(&rrd);
392 return -1;
393 }
394 }
395 rrd.stat_head->rra_cnt++;
396 } else {
397 rrd_set_error("can't parse argument '%s'",argv[i]);
398 rrd_free(&rrd);
399 return -1;
400 }
401 }
404 if (rrd.stat_head->rra_cnt < 1){
405 rrd_set_error("you must define at least one Round Robin Archive");
406 rrd_free(&rrd);
407 return(-1);
408 }
410 if (rrd.stat_head->ds_cnt < 1){
411 rrd_set_error("you must define at least one Data Source");
412 rrd_free(&rrd);
413 return(-1);
414 }
415 return rrd_create_fn(filename, &rrd);
416 }
418 void parseGENERIC_DS(char *def,rrd_t *rrd, int ds_idx)
419 {
420 char minstr[DS_NAM_SIZE], maxstr[DS_NAM_SIZE];
421 /*
422 int temp;
424 temp = sscanf(def,"%lu:%18[^:]:%18[^:]",
425 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
426 minstr,maxstr);
427 */
428 if (sscanf(def,"%lu:%18[^:]:%18[^:]",
429 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
430 minstr,maxstr) == 3)
431 {
432 if (minstr[0] == 'U' && minstr[1] == 0)
433 rrd -> ds_def[ds_idx].par[DS_min_val].u_val = DNAN;
434 else
435 rrd -> ds_def[ds_idx].par[DS_min_val].u_val = atof(minstr);
437 if (maxstr[0] == 'U' && maxstr[1] == 0)
438 rrd -> ds_def[ds_idx].par[DS_max_val].u_val = DNAN;
439 else
440 rrd -> ds_def[ds_idx].par[DS_max_val].u_val = atof(maxstr);
442 if (! isnan(rrd -> ds_def[ds_idx].par[DS_min_val].u_val) &&
443 ! isnan(rrd -> ds_def[ds_idx].par[DS_max_val].u_val) &&
444 rrd -> ds_def[ds_idx].par[DS_min_val].u_val
445 >= rrd -> ds_def[ds_idx].par[DS_max_val].u_val ) {
446 rrd_set_error("min must be less than max in DS definition");
447 return;
448 }
449 } else {
450 rrd_set_error("failed to parse data source %s", def);
451 }
452 }
454 /* Create the CF_DEVPREDICT, CF_DEVSEASONAL, CF_SEASONAL, and CF_FAILURES RRAs
455 * associated with a CF_HWPREDICT RRA. */
456 int
457 create_hw_contingent_rras(rrd_t *rrd, unsigned short period, unsigned long hashed_name)
458 {
459 size_t old_size;
460 rra_def_t* current_rra;
462 /* save index to CF_HWPREDICT */
463 unsigned long hw_index = rrd -> stat_head -> rra_cnt;
464 /* advance the pointer */
465 (rrd -> stat_head -> rra_cnt)++;
466 /* allocate the memory for the 4 contingent RRAs */
467 old_size = sizeof(rra_def_t)*(rrd -> stat_head->rra_cnt);
468 if ((rrd -> rra_def = rrd_realloc(rrd -> rra_def,
469 old_size+4*sizeof(rra_def_t)))==NULL)
470 {
471 rrd_set_error("allocating rrd.rra_def");
472 return(-1);
473 }
474 /* clear memory */
475 memset(&(rrd -> rra_def[rrd -> stat_head->rra_cnt]), 0, 4*sizeof(rra_def_t));
477 /* create the CF_SEASONAL RRA */
478 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
479 strcpy(current_rra -> cf_nam,"SEASONAL");
480 current_rra -> row_cnt = period;
481 current_rra -> par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
482 current_rra -> pdp_cnt = 1;
483 current_rra -> par[RRA_seasonal_gamma].u_val =
484 rrd -> rra_def[hw_index].par[RRA_hw_alpha].u_val;
485 current_rra -> par[RRA_dependent_rra_idx].u_cnt = hw_index;
486 rrd -> rra_def[hw_index].par[RRA_dependent_rra_idx].u_cnt = rrd -> stat_head -> rra_cnt;
488 /* create the CF_DEVSEASONAL RRA */
489 (rrd -> stat_head -> rra_cnt)++;
490 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
491 strcpy(current_rra -> cf_nam,"DEVSEASONAL");
492 current_rra -> row_cnt = period;
493 current_rra -> par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
494 current_rra -> pdp_cnt = 1;
495 current_rra -> par[RRA_seasonal_gamma].u_val =
496 rrd -> rra_def[hw_index].par[RRA_hw_alpha].u_val;
497 current_rra -> par[RRA_dependent_rra_idx].u_cnt = hw_index;
499 /* create the CF_DEVPREDICT RRA */
500 (rrd -> stat_head -> rra_cnt)++;
501 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
502 strcpy(current_rra -> cf_nam,"DEVPREDICT");
503 current_rra -> row_cnt = (rrd -> rra_def[hw_index]).row_cnt;
504 current_rra -> pdp_cnt = 1;
505 current_rra -> par[RRA_dependent_rra_idx].u_cnt
506 = hw_index + 2; /* DEVSEASONAL */
508 /* create the CF_FAILURES RRA */
509 (rrd -> stat_head -> rra_cnt)++;
510 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
511 strcpy(current_rra -> cf_nam,"FAILURES");
512 current_rra -> row_cnt = period;
513 current_rra -> pdp_cnt = 1;
514 current_rra -> par[RRA_delta_pos].u_val = 2.0;
515 current_rra -> par[RRA_delta_neg].u_val = 2.0;
516 current_rra -> par[RRA_failure_threshold].u_cnt = 7;
517 current_rra -> par[RRA_window_len].u_cnt = 9;
518 current_rra -> par[RRA_dependent_rra_idx].u_cnt =
519 hw_index + 2; /* DEVSEASONAL */
520 return 0;
521 }
523 /* create and empty rrd file according to the specs given */
525 int
526 rrd_create_fn(char *file_name, rrd_t *rrd)
527 {
528 unsigned long i,ii;
529 FILE *rrd_file;
530 rrd_value_t unknown = DNAN ;
532 if ((rrd_file = fopen(file_name,"wb")) == NULL ) {
533 rrd_set_error("creating '%s': %s",file_name, rrd_strerror(errno));
534 free(rrd->stat_head);
535 free(rrd->ds_def);
536 free(rrd->rra_def);
537 return(-1);
538 }
540 fwrite(rrd->stat_head,
541 sizeof(stat_head_t), 1, rrd_file);
543 fwrite(rrd->ds_def,
544 sizeof(ds_def_t), rrd->stat_head->ds_cnt, rrd_file);
546 fwrite(rrd->rra_def,
547 sizeof(rra_def_t), rrd->stat_head->rra_cnt, rrd_file);
549 fwrite(rrd->live_head,
550 sizeof(live_head_t),1, rrd_file);
552 if((rrd->pdp_prep = calloc(1,sizeof(pdp_prep_t))) == NULL){
553 rrd_set_error("allocating pdp_prep");
554 rrd_free(rrd);
555 fclose(rrd_file);
556 return(-1);
557 }
559 strcpy(rrd->pdp_prep->last_ds,"UNKN");
561 rrd->pdp_prep->scratch[PDP_val].u_val = 0.0;
562 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt =
563 rrd->live_head->last_up % rrd->stat_head->pdp_step;
565 for(i=0; i < rrd->stat_head->ds_cnt; i++)
566 fwrite( rrd->pdp_prep,sizeof(pdp_prep_t),1,rrd_file);
568 if((rrd->cdp_prep = calloc(1,sizeof(cdp_prep_t))) == NULL){
569 rrd_set_error("allocating cdp_prep");
570 rrd_free(rrd);
571 fclose(rrd_file);
572 return(-1);
573 }
576 for(i=0; i < rrd->stat_head->rra_cnt; i++) {
577 switch (cf_conv(rrd->rra_def[i].cf_nam))
578 {
579 case CF_HWPREDICT:
580 init_hwpredict_cdp(rrd->cdp_prep);
581 break;
582 case CF_SEASONAL:
583 case CF_DEVSEASONAL:
584 init_seasonal_cdp(rrd->cdp_prep);
585 break;
586 case CF_FAILURES:
587 /* initialize violation history to 0 */
588 for (ii = 0; ii < MAX_CDP_PAR_EN; ii++)
589 {
590 /* We can zero everything out, by setting u_val to the
591 * NULL address. Each array entry in scratch is 8 bytes
592 * (a double), but u_cnt only accessed 4 bytes (long) */
593 rrd->cdp_prep->scratch[ii].u_val = 0.0;
594 }
595 break;
596 default:
597 /* can not be zero because we don't know anything ... */
598 rrd->cdp_prep->scratch[CDP_val].u_val = DNAN;
599 /* startup missing pdp count */
600 rrd->cdp_prep->scratch[CDP_unkn_pdp_cnt].u_cnt =
601 ((rrd->live_head->last_up -
602 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt)
603 % (rrd->stat_head->pdp_step
604 * rrd->rra_def[i].pdp_cnt)) / rrd->stat_head->pdp_step;
605 break;
606 }
608 for(ii=0; ii < rrd->stat_head->ds_cnt; ii++)
609 {
610 fwrite( rrd->cdp_prep,sizeof(cdp_prep_t),1,rrd_file);
611 }
612 }
614 /* now, we must make sure that the rest of the rrd
615 struct is properly initialized */
617 if((rrd->rra_ptr = calloc(1,sizeof(rra_ptr_t))) == NULL) {
618 rrd_set_error("allocating rra_ptr");
619 rrd_free(rrd);
620 fclose(rrd_file);
621 return(-1);
622 }
624 /* changed this initialization to be consistent with
625 * rrd_restore. With the old value (0), the first update
626 * would occur for cur_row = 1 because rrd_update increments
627 * the pointer a priori. */
628 for (i=0; i < rrd->stat_head->rra_cnt; i++)
629 {
630 rrd->rra_ptr->cur_row = rrd->rra_def[i].row_cnt - 1;
631 fwrite( rrd->rra_ptr, sizeof(rra_ptr_t),1,rrd_file);
632 }
634 /* write the empty data area */
635 for(i=0;
636 i < rrd->stat_head->rra_cnt;
637 i++)
638 {
639 for(ii=0;
640 ii < rrd->rra_def[i].row_cnt
641 * rrd->stat_head->ds_cnt;
642 ii++){
643 fwrite(&unknown,sizeof(rrd_value_t),1,rrd_file);
644 }
645 }
647 /* lets see if we had an error */
648 if(ferror(rrd_file)){
649 rrd_set_error("a file error occurred while creating '%s'",file_name);
650 fclose(rrd_file);
651 rrd_free(rrd);
652 return(-1);
653 }
655 fclose(rrd_file);
656 rrd_free(rrd);
657 return (0);
658 }