1 /*****************************************************************************
2 * RRDtool 1.2.4 Copyright by Tobi Oetiker, 1997-2005
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;
26 optind = 0; opterr = 0; /* initialize getopt */
28 while (1){
29 static struct option long_options[] =
30 {
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 opt = getopt_long(argc, argv, "b:s:",
38 long_options, &option_index);
40 if (opt == EOF)
41 break;
43 switch(opt) {
44 case 'b':
45 if ((parsetime_error = parsetime(optarg, &last_up_tv))) {
46 rrd_set_error("start time: %s", parsetime_error );
47 return(-1);
48 }
49 if (last_up_tv.type == RELATIVE_TO_END_TIME ||
50 last_up_tv.type == RELATIVE_TO_START_TIME) {
51 rrd_set_error("specifying time relative to the 'start' "
52 "or 'end' makes no sense here");
53 return(-1);
54 }
56 last_up = mktime(&last_up_tv.tm) + last_up_tv.offset;
58 if (last_up < 3600*24*365*10){
59 rrd_set_error("the first entry to the RRD should be after 1980");
60 return(-1);
61 }
62 break;
64 case 's':
65 long_tmp = atol(optarg);
66 if (long_tmp < 1){
67 rrd_set_error("step size should be no less than one second");
68 return(-1);
69 }
70 pdp_step = long_tmp;
71 break;
73 case '?':
74 if (optopt != 0)
75 rrd_set_error("unknown option '%c'", optopt);
76 else
77 rrd_set_error("unknown option '%s'",argv[optind-1]);
78 return(-1);
79 }
80 }
82 rc = rrd_create_r(argv[optind],
83 pdp_step, last_up,
84 argc - optind - 1, argv + optind + 1);
86 return rc;
87 }
89 /* #define DEBUG */
90 int
91 rrd_create_r(char *filename,
92 unsigned long pdp_step, time_t last_up,
93 int argc, char **argv)
94 {
95 rrd_t rrd;
96 long i;
97 int offset;
98 char *token;
99 unsigned short token_idx, error_flag, period=0;
100 unsigned long hashed_name;
102 /* init rrd clean */
103 rrd_init(&rrd);
104 /* static header */
105 if((rrd.stat_head = calloc(1,sizeof(stat_head_t)))==NULL){
106 rrd_set_error("allocating rrd.stat_head");
107 rrd_free(&rrd);
108 return(-1);
109 }
111 /* live header */
112 if((rrd.live_head = calloc(1,sizeof(live_head_t)))==NULL){
113 rrd_set_error("allocating rrd.live_head");
114 rrd_free(&rrd);
115 return(-1);
116 }
118 /* set some defaults */
119 strcpy(rrd.stat_head->cookie,RRD_COOKIE);
120 strcpy(rrd.stat_head->version,RRD_VERSION);
121 rrd.stat_head->float_cookie = FLOAT_COOKIE;
122 rrd.stat_head->ds_cnt = 0; /* this will be adjusted later */
123 rrd.stat_head->rra_cnt = 0; /* ditto */
124 rrd.stat_head->pdp_step = pdp_step; /* 5 minute default */
126 /* a default value */
127 rrd.ds_def = NULL;
128 rrd.rra_def = NULL;
130 rrd.live_head->last_up = last_up;
132 /* optind points to the first non-option command line arg,
133 * in this case, the file name. */
134 /* Compute the FNV hash value (used by SEASONAL and DEVSEASONAL
135 * arrays. */
136 hashed_name = FnvHash(filename);
137 for(i=0;i<argc;i++){
138 unsigned int ii;
139 if (strncmp(argv[i],"DS:",3)==0){
140 size_t old_size = sizeof(ds_def_t)*(rrd.stat_head->ds_cnt);
141 if((rrd.ds_def = rrd_realloc(rrd.ds_def,
142 old_size+sizeof(ds_def_t)))==NULL){
143 rrd_set_error("allocating rrd.ds_def");
144 rrd_free(&rrd);
145 return(-1);
146 }
147 memset(&rrd.ds_def[rrd.stat_head->ds_cnt], 0, sizeof(ds_def_t));
148 /* extract the name and type */
149 if (sscanf(&argv[i][3],
150 DS_NAM_FMT ":" DST_FMT ":%n",
151 rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
152 rrd.ds_def[rrd.stat_head->ds_cnt].dst,&offset) == 2)
153 {
154 /* check for duplicate datasource names */
155 for(ii=0;ii<rrd.stat_head->ds_cnt;ii++)
156 if(strcmp(rrd.ds_def[rrd.stat_head->ds_cnt].ds_nam,
157 rrd.ds_def[ii].ds_nam) == 0){
158 rrd_set_error("Duplicate DS name: %s",rrd.ds_def[ii].ds_nam);
159 }
160 } else {
161 rrd_set_error("invalid DS format");
162 }
164 /* parse the remainder of the arguments */
165 switch(dst_conv(rrd.ds_def[rrd.stat_head->ds_cnt].dst))
166 {
167 case DST_COUNTER:
168 case DST_ABSOLUTE:
169 case DST_GAUGE:
170 case DST_DERIVE:
171 parseGENERIC_DS(&argv[i][offset+3],&rrd, rrd.stat_head->ds_cnt);
172 break;
173 case DST_CDEF:
174 parseCDEF_DS(&argv[i][offset+3],&rrd, rrd.stat_head->ds_cnt);
175 break;
176 default:
177 rrd_set_error("invalid DS type specified");
178 break;
179 }
181 if (rrd_test_error()) {
182 rrd_free(&rrd);
183 return -1;
184 }
185 rrd.stat_head -> ds_cnt++;
186 } else if (strncmp(argv[i],"RRA:",4)==0){
187 char *argvcopy;
188 char *tokptr;
189 size_t old_size = sizeof(rra_def_t)*(rrd.stat_head->rra_cnt);
190 if((rrd.rra_def = rrd_realloc(rrd.rra_def,
191 old_size+sizeof(rra_def_t)))==NULL)
192 {
193 rrd_set_error("allocating rrd.rra_def");
194 rrd_free(&rrd);
195 return(-1);
196 }
197 memset(&rrd.rra_def[rrd.stat_head->rra_cnt], 0, sizeof(rra_def_t));
199 argvcopy = strdup(argv[i]);
200 token = strtok_r(&argvcopy[4],":", &tokptr);
201 token_idx = error_flag = 0;
202 while (token != NULL)
203 {
204 switch(token_idx)
205 {
206 case 0:
207 if (sscanf(token,CF_NAM_FMT,
208 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) != 1)
209 rrd_set_error("Failed to parse CF name");
210 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
211 {
212 case CF_HWPREDICT:
213 /* initialize some parameters */
214 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].u_val = 0.1;
215 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].u_val = 1.0/288;
216 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
217 rrd.stat_head -> rra_cnt;
218 break;
219 case CF_DEVSEASONAL:
220 case CF_SEASONAL:
221 /* initialize some parameters */
222 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_gamma].u_val = 0.1;
223 /* fall through */
224 case CF_DEVPREDICT:
225 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt = -1;
226 break;
227 case CF_FAILURES:
228 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_delta_pos].u_val = 2.0;
229 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_delta_neg].u_val = 2.0;
230 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt = 3;
231 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt = 2;
232 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt = -1;
233 break;
234 /* invalid consolidation function */
235 case -1:
236 rrd_set_error("Unrecognized consolidation function %s",
237 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
238 default:
239 break;
240 }
241 /* default: 1 pdp per cdp */
242 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = 1;
243 break;
244 case 1:
245 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
246 {
247 case CF_HWPREDICT:
248 case CF_DEVSEASONAL:
249 case CF_SEASONAL:
250 case CF_DEVPREDICT:
251 case CF_FAILURES:
252 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = atoi(token);
253 break;
254 default:
255 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val = atof(token);
256 if (rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val<0.0 ||
257 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_cdp_xff_val].u_val>=1.0)
258 rrd_set_error("Invalid xff: must be between 0 and 1");
259 break;
260 }
261 break;
262 case 2:
263 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
264 {
265 case CF_HWPREDICT:
266 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_alpha].u_val = atof(token);
267 if (atof(token) <= 0.0 || atof(token) >= 1.0)
268 rrd_set_error("Invalid alpha: must be between 0 and 1");
269 break;
270 case CF_DEVSEASONAL:
271 case CF_SEASONAL:
272 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_gamma].u_val =
273 atof(token);
274 if (atof(token) <= 0.0 || atof(token) >= 1.0)
275 rrd_set_error("Invalid gamma: must be between 0 and 1");
276 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_seasonal_smooth_idx].u_cnt
277 = hashed_name % rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt;
278 break;
279 case CF_FAILURES:
280 /* specifies the # of violations that constitutes the failure threshold */
281 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt =
282 atoi(token);
283 if (atoi(token) < 1 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
284 rrd_set_error("Failure threshold is out of range %d, %d",1,
285 MAX_FAILURES_WINDOW_LEN);
286 break;
287 case CF_DEVPREDICT:
288 /* specifies the index (1-based) of CF_DEVSEASONAL array
289 * associated with this CF_DEVPREDICT array. */
290 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
291 atoi(token) - 1;
292 break;
293 default:
294 rrd.rra_def[rrd.stat_head->rra_cnt].pdp_cnt = atoi(token);
295 break;
296 }
297 break;
298 case 3:
299 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
300 {
301 case CF_HWPREDICT:
302 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_hw_beta].u_val = atof(token);
303 if (atof(token) < 0.0 || atof(token) > 1.0)
304 rrd_set_error("Invalid beta: must be between 0 and 1");
305 break;
306 case CF_DEVSEASONAL:
307 case CF_SEASONAL:
308 /* specifies the index (1-based) of CF_HWPREDICT array
309 * associated with this CF_DEVSEASONAL or CF_SEASONAL array.
310 * */
311 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
312 atoi(token) - 1;
313 break;
314 case CF_FAILURES:
315 /* specifies the window length */
316 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt =
317 atoi(token);
318 if (atoi(token) < 1 || atoi(token) > MAX_FAILURES_WINDOW_LEN)
319 rrd_set_error("Window length is out of range %d, %d",1,
320 MAX_FAILURES_WINDOW_LEN);
321 /* verify that window length exceeds the failure threshold */
322 if (rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_window_len].u_cnt <
323 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_failure_threshold].u_cnt)
324 rrd_set_error("Window length is shorter than the failure threshold");
325 break;
326 case CF_DEVPREDICT:
327 /* shouldn't be any more arguments */
328 rrd_set_error("Unexpected extra argument for consolidation function DEVPREDICT");
329 break;
330 default:
331 rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt = atoi(token);
332 break;
333 }
334 break;
335 case 4:
336 switch(cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam))
337 {
338 case CF_FAILURES:
339 /* specifies the index (1-based) of CF_DEVSEASONAL array
340 * associated with this CF_DEVFAILURES array. */
341 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
342 atoi(token) - 1;
343 break;
344 case CF_HWPREDICT:
345 /* length of the associated CF_SEASONAL and CF_DEVSEASONAL arrays. */
346 period = atoi(token);
347 if (period > rrd.rra_def[rrd.stat_head->rra_cnt].row_cnt)
348 rrd_set_error("Length of seasonal cycle exceeds length of HW prediction array");
349 break;
350 default:
351 /* shouldn't be any more arguments */
352 rrd_set_error("Unexpected extra argument for consolidation function %s",
353 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam);
354 break;
355 }
356 break;
357 case 5:
358 /* If we are here, this must be a CF_HWPREDICT RRA.
359 * Specifies the index (1-based) of CF_SEASONAL array
360 * associated with this CF_HWPREDICT array. If this argument
361 * is missing, then the CF_SEASONAL, CF_DEVSEASONAL, CF_DEVPREDICT,
362 * CF_FAILURES.
363 * arrays are created automatically. */
364 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt =
365 atoi(token) - 1;
366 break;
367 default:
368 /* should never get here */
369 rrd_set_error("Unknown error");
370 break;
371 } /* end switch */
372 if (rrd_test_error())
373 {
374 /* all errors are unrecoverable */
375 free(argvcopy);
376 rrd_free(&rrd);
377 return (-1);
378 }
379 token = strtok_r(NULL,":", &tokptr);
380 token_idx++;
381 } /* end while */
382 free(argvcopy);
383 #ifdef DEBUG
384 fprintf(stderr,"Creating RRA CF: %s, dep idx %lu, current idx %lu\n",
385 rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam,
386 rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt,
387 rrd.stat_head -> rra_cnt);
388 #endif
389 /* should we create CF_SEASONAL, CF_DEVSEASONAL, and CF_DEVPREDICT? */
390 if (cf_conv(rrd.rra_def[rrd.stat_head->rra_cnt].cf_nam) == CF_HWPREDICT
391 && rrd.rra_def[rrd.stat_head->rra_cnt].par[RRA_dependent_rra_idx].u_cnt
392 == rrd.stat_head -> rra_cnt)
393 {
394 #ifdef DEBUG
395 fprintf(stderr,"Creating HW contingent RRAs\n");
396 #endif
397 if (create_hw_contingent_rras(&rrd,period,hashed_name) == -1) {
398 rrd_set_error("creating contingent RRA");
399 rrd_free(&rrd);
400 return -1;
401 }
402 }
403 rrd.stat_head->rra_cnt++;
404 } else {
405 rrd_set_error("can't parse argument '%s'",argv[i]);
406 rrd_free(&rrd);
407 return -1;
408 }
409 }
412 if (rrd.stat_head->rra_cnt < 1){
413 rrd_set_error("you must define at least one Round Robin Archive");
414 rrd_free(&rrd);
415 return(-1);
416 }
418 if (rrd.stat_head->ds_cnt < 1){
419 rrd_set_error("you must define at least one Data Source");
420 rrd_free(&rrd);
421 return(-1);
422 }
423 return rrd_create_fn(filename, &rrd);
424 }
426 void parseGENERIC_DS(char *def,rrd_t *rrd, int ds_idx)
427 {
428 char minstr[DS_NAM_SIZE], maxstr[DS_NAM_SIZE];
429 /*
430 int temp;
432 temp = sscanf(def,"%lu:%18[^:]:%18[^:]",
433 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
434 minstr,maxstr);
435 */
436 if (sscanf(def,"%lu:%18[^:]:%18[^:]",
437 &(rrd -> ds_def[ds_idx].par[DS_mrhb_cnt].u_cnt),
438 minstr,maxstr) == 3)
439 {
440 if (minstr[0] == 'U' && minstr[1] == 0)
441 rrd -> ds_def[ds_idx].par[DS_min_val].u_val = DNAN;
442 else
443 rrd -> ds_def[ds_idx].par[DS_min_val].u_val = atof(minstr);
445 if (maxstr[0] == 'U' && maxstr[1] == 0)
446 rrd -> ds_def[ds_idx].par[DS_max_val].u_val = DNAN;
447 else
448 rrd -> ds_def[ds_idx].par[DS_max_val].u_val = atof(maxstr);
450 if (! isnan(rrd -> ds_def[ds_idx].par[DS_min_val].u_val) &&
451 ! isnan(rrd -> ds_def[ds_idx].par[DS_max_val].u_val) &&
452 rrd -> ds_def[ds_idx].par[DS_min_val].u_val
453 >= rrd -> ds_def[ds_idx].par[DS_max_val].u_val ) {
454 rrd_set_error("min must be less than max in DS definition");
455 return;
456 }
457 } else {
458 rrd_set_error("failed to parse data source %s", def);
459 }
460 }
462 /* Create the CF_DEVPREDICT, CF_DEVSEASONAL, CF_SEASONAL, and CF_FAILURES RRAs
463 * associated with a CF_HWPREDICT RRA. */
464 int
465 create_hw_contingent_rras(rrd_t *rrd, unsigned short period, unsigned long hashed_name)
466 {
467 size_t old_size;
468 rra_def_t* current_rra;
470 /* save index to CF_HWPREDICT */
471 unsigned long hw_index = rrd -> stat_head -> rra_cnt;
472 /* advance the pointer */
473 (rrd -> stat_head -> rra_cnt)++;
474 /* allocate the memory for the 4 contingent RRAs */
475 old_size = sizeof(rra_def_t)*(rrd -> stat_head->rra_cnt);
476 if ((rrd -> rra_def = rrd_realloc(rrd -> rra_def,
477 old_size+4*sizeof(rra_def_t)))==NULL)
478 {
479 rrd_set_error("allocating rrd.rra_def");
480 return(-1);
481 }
482 /* clear memory */
483 memset(&(rrd -> rra_def[rrd -> stat_head->rra_cnt]), 0, 4*sizeof(rra_def_t));
485 /* create the CF_SEASONAL RRA */
486 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
487 strcpy(current_rra -> cf_nam,"SEASONAL");
488 current_rra -> row_cnt = period;
489 current_rra -> par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
490 current_rra -> pdp_cnt = 1;
491 current_rra -> par[RRA_seasonal_gamma].u_val =
492 rrd -> rra_def[hw_index].par[RRA_hw_alpha].u_val;
493 current_rra -> par[RRA_dependent_rra_idx].u_cnt = hw_index;
494 rrd -> rra_def[hw_index].par[RRA_dependent_rra_idx].u_cnt = rrd -> stat_head -> rra_cnt;
496 /* create the CF_DEVSEASONAL RRA */
497 (rrd -> stat_head -> rra_cnt)++;
498 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
499 strcpy(current_rra -> cf_nam,"DEVSEASONAL");
500 current_rra -> row_cnt = period;
501 current_rra -> par[RRA_seasonal_smooth_idx].u_cnt = hashed_name % period;
502 current_rra -> pdp_cnt = 1;
503 current_rra -> par[RRA_seasonal_gamma].u_val =
504 rrd -> rra_def[hw_index].par[RRA_hw_alpha].u_val;
505 current_rra -> par[RRA_dependent_rra_idx].u_cnt = hw_index;
507 /* create the CF_DEVPREDICT RRA */
508 (rrd -> stat_head -> rra_cnt)++;
509 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
510 strcpy(current_rra -> cf_nam,"DEVPREDICT");
511 current_rra -> row_cnt = (rrd -> rra_def[hw_index]).row_cnt;
512 current_rra -> pdp_cnt = 1;
513 current_rra -> par[RRA_dependent_rra_idx].u_cnt
514 = hw_index + 2; /* DEVSEASONAL */
516 /* create the CF_FAILURES RRA */
517 (rrd -> stat_head -> rra_cnt)++;
518 current_rra = &(rrd -> rra_def[rrd -> stat_head -> rra_cnt]);
519 strcpy(current_rra -> cf_nam,"FAILURES");
520 current_rra -> row_cnt = period;
521 current_rra -> pdp_cnt = 1;
522 current_rra -> par[RRA_delta_pos].u_val = 2.0;
523 current_rra -> par[RRA_delta_neg].u_val = 2.0;
524 current_rra -> par[RRA_failure_threshold].u_cnt = 7;
525 current_rra -> par[RRA_window_len].u_cnt = 9;
526 current_rra -> par[RRA_dependent_rra_idx].u_cnt =
527 hw_index + 2; /* DEVSEASONAL */
528 return 0;
529 }
531 /* create and empty rrd file according to the specs given */
533 int
534 rrd_create_fn(char *file_name, rrd_t *rrd)
535 {
536 unsigned long i,ii;
537 FILE *rrd_file;
538 rrd_value_t *unknown;
539 int unkn_cnt;
541 if ((rrd_file = fopen(file_name,"wb")) == NULL ) {
542 rrd_set_error("creating '%s': %s",file_name, rrd_strerror(errno));
543 free(rrd->stat_head);
544 free(rrd->ds_def);
545 free(rrd->rra_def);
546 return(-1);
547 }
549 fwrite(rrd->stat_head,
550 sizeof(stat_head_t), 1, rrd_file);
552 fwrite(rrd->ds_def,
553 sizeof(ds_def_t), rrd->stat_head->ds_cnt, rrd_file);
555 fwrite(rrd->rra_def,
556 sizeof(rra_def_t), rrd->stat_head->rra_cnt, rrd_file);
558 fwrite(rrd->live_head,
559 sizeof(live_head_t),1, rrd_file);
561 if((rrd->pdp_prep = calloc(1,sizeof(pdp_prep_t))) == NULL){
562 rrd_set_error("allocating pdp_prep");
563 rrd_free(rrd);
564 fclose(rrd_file);
565 return(-1);
566 }
568 strcpy(rrd->pdp_prep->last_ds,"UNKN");
570 rrd->pdp_prep->scratch[PDP_val].u_val = 0.0;
571 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt =
572 rrd->live_head->last_up % rrd->stat_head->pdp_step;
574 for(i=0; i < rrd->stat_head->ds_cnt; i++)
575 fwrite( rrd->pdp_prep,sizeof(pdp_prep_t),1,rrd_file);
577 if((rrd->cdp_prep = calloc(1,sizeof(cdp_prep_t))) == NULL){
578 rrd_set_error("allocating cdp_prep");
579 rrd_free(rrd);
580 fclose(rrd_file);
581 return(-1);
582 }
585 for(i=0; i < rrd->stat_head->rra_cnt; i++) {
586 switch (cf_conv(rrd->rra_def[i].cf_nam))
587 {
588 case CF_HWPREDICT:
589 init_hwpredict_cdp(rrd->cdp_prep);
590 break;
591 case CF_SEASONAL:
592 case CF_DEVSEASONAL:
593 init_seasonal_cdp(rrd->cdp_prep);
594 break;
595 case CF_FAILURES:
596 /* initialize violation history to 0 */
597 for (ii = 0; ii < MAX_CDP_PAR_EN; ii++)
598 {
599 /* We can zero everything out, by setting u_val to the
600 * NULL address. Each array entry in scratch is 8 bytes
601 * (a double), but u_cnt only accessed 4 bytes (long) */
602 rrd->cdp_prep->scratch[ii].u_val = 0.0;
603 }
604 break;
605 default:
606 /* can not be zero because we don't know anything ... */
607 rrd->cdp_prep->scratch[CDP_val].u_val = DNAN;
608 /* startup missing pdp count */
609 rrd->cdp_prep->scratch[CDP_unkn_pdp_cnt].u_cnt =
610 ((rrd->live_head->last_up -
611 rrd->pdp_prep->scratch[PDP_unkn_sec_cnt].u_cnt)
612 % (rrd->stat_head->pdp_step
613 * rrd->rra_def[i].pdp_cnt)) / rrd->stat_head->pdp_step;
614 break;
615 }
617 for(ii=0; ii < rrd->stat_head->ds_cnt; ii++)
618 {
619 fwrite( rrd->cdp_prep,sizeof(cdp_prep_t),1,rrd_file);
620 }
621 }
623 /* now, we must make sure that the rest of the rrd
624 struct is properly initialized */
626 if((rrd->rra_ptr = calloc(1,sizeof(rra_ptr_t))) == NULL) {
627 rrd_set_error("allocating rra_ptr");
628 rrd_free(rrd);
629 fclose(rrd_file);
630 return(-1);
631 }
633 /* changed this initialization to be consistent with
634 * rrd_restore. With the old value (0), the first update
635 * would occur for cur_row = 1 because rrd_update increments
636 * the pointer a priori. */
637 for (i=0; i < rrd->stat_head->rra_cnt; i++)
638 {
639 rrd->rra_ptr->cur_row = rrd->rra_def[i].row_cnt - 1;
640 fwrite( rrd->rra_ptr, sizeof(rra_ptr_t),1,rrd_file);
641 }
643 /* write the empty data area */
644 if ((unknown = (rrd_value_t *)malloc(512 * sizeof(rrd_value_t))) == NULL) {
645 rrd_set_error("allocating unknown");
646 rrd_free(rrd);
647 fclose(rrd_file);
648 return(-1);
649 }
650 for (i = 0; i < 512; ++i)
651 unknown[i] = DNAN;
653 unkn_cnt = 0;
654 for (i = 0; i < rrd->stat_head->rra_cnt; i++)
655 unkn_cnt += rrd->stat_head->ds_cnt * rrd->rra_def[i].row_cnt;
657 while (unkn_cnt > 0) {
658 fwrite(unknown, sizeof(rrd_value_t), min(unkn_cnt, 512), rrd_file);
659 unkn_cnt -= 512;
660 }
661 free(unknown);
663 /* lets see if we had an error */
664 if(ferror(rrd_file)){
665 rrd_set_error("a file error occurred while creating '%s'",file_name);
666 fclose(rrd_file);
667 rrd_free(rrd);
668 return(-1);
669 }
671 fclose(rrd_file);
672 rrd_free(rrd);
673 return (0);
674 }