1 /*****************************************************************************
2 * RRDtool 1.2.99907080300 Copyright by Tobi Oetiker, 1997-2007
3 *****************************************************************************
4 * change header parameters of an rrd
5 *****************************************************************************
6 * $Id$
7 * $Log$
8 * Revision 1.6 2004/05/26 22:11:12 oetiker
9 * reduce compiler warnings. Many small fixes. -- Mike Slifcak <slif@bellsouth.net>
10 *
11 * Revision 1.5 2002/02/01 20:34:49 oetiker
12 * fixed version number and date/time
13 *
14 * Revision 1.4 2001/08/22 22:29:07 jake
15 * Contents of this patch:
16 * (1) Adds/revises documentation for rrd tune in rrd_tool.c and pod files.
17 * (2) Moves some initialization code from rrd_create.c to rrd_hw.c.
18 * (3) Adds another pass to smoothing for SEASONAL and DEVSEASONAL RRAs.
19 * This pass computes the coefficients as deviations from an average; the
20 * average is added the baseline coefficient of HWPREDICT. Statistical texts
21 * suggest this to preserve algorithm stability. It will not invalidate
22 * RRD files created and smoothed with the old code.
23 * (4) Adds the aberrant-reset flag to rrd tune. This operation, which is
24 * specified for a single data source, causes the holt-winters algorithm to
25 * forget everthing it has learned and start over.
26 * (5) Fixes a few out-of-date code comments.
27 *
28 * Revision 1.3 2001/03/07 21:21:54 oetiker
29 * complete rewrite of rrdgraph documentation. This also includs info
30 * on upcomming/planned changes to the rrdgraph interface and functionality
31 * -- Alex van den Bogaerdt <alex@slot.hollandcasino.nl>
32 *
33 * Revision 1.2 2001/03/04 13:01:55 oetiker
34 * Aberrant Behavior Detection support. A brief overview added to rrdtool.pod.
35 * Major updates to rrd_update.c, rrd_create.c. Minor update to other core files.
36 * This is backwards compatible! But new files using the Aberrant stuff are not readable
37 * by old rrdtool versions. See http://cricket.sourceforge.net/aberrant/rrd_hw.htm
38 * -- Jake Brutlag <jakeb@corp.webtv.net>
39 *
40 *****************************************************************************/
42 #include "rrd_tool.h"
43 #include "rrd_rpncalc.h"
44 #include "rrd_hw.h"
45 #include <locale.h>
47 int set_hwarg(
48 rrd_t *rrd,
49 enum cf_en cf,
50 enum rra_par_en rra_par,
51 char *arg);
52 int set_deltaarg(
53 rrd_t *rrd,
54 enum rra_par_en rra_par,
55 char *arg);
56 int set_windowarg(
57 rrd_t *rrd,
58 enum rra_par_en,
59 char *arg);
61 int rrd_tune(
62 int argc,
63 char **argv)
64 {
65 rrd_t rrd;
66 int matches;
67 int optcnt = 0;
68 long ds;
69 char ds_nam[DS_NAM_SIZE];
70 char ds_new[DS_NAM_SIZE];
71 long heartbeat;
72 double min;
73 double max;
74 char dst[DST_SIZE];
75 rrd_file_t *rrd_file;
76 struct option long_options[] = {
77 {"heartbeat", required_argument, 0, 'h'},
78 {"minimum", required_argument, 0, 'i'},
79 {"maximum", required_argument, 0, 'a'},
80 {"data-source-type", required_argument, 0, 'd'},
81 {"data-source-rename", required_argument, 0, 'r'},
82 /* added parameter tuning options for aberrant behavior detection */
83 {"deltapos", required_argument, 0, 'p'},
84 {"deltaneg", required_argument, 0, 'n'},
85 {"window-length", required_argument, 0, 'w'},
86 {"failure-threshold", required_argument, 0, 'f'},
87 {"alpha", required_argument, 0, 'x'},
88 {"beta", required_argument, 0, 'y'},
89 {"gamma", required_argument, 0, 'z'},
90 {"gamma-deviation", required_argument, 0, 'v'},
91 {"smoothing-window", required_argument, 0, 's'},
92 {"smoothing-window-deviation", required_argument, 0, 'S'},
93 {"aberrant-reset", required_argument, 0, 'b'},
94 {0, 0, 0, 0}
95 };
97 optind = 0;
98 opterr = 0; /* initialize getopt */
101 rrd_file = rrd_open(argv[1], &rrd, RRD_READWRITE);
102 if (rrd_file == NULL) {
103 rrd_free(&rrd);
104 return -1;
105 }
107 while (1) {
108 int option_index = 0;
109 int opt;
110 char *old_locale = "";
112 opt = getopt_long(argc, argv, "h:i:a:d:r:p:n:w:f:x:y:z:v:b:",
113 long_options, &option_index);
114 if (opt == EOF)
115 break;
117 optcnt++;
118 switch (opt) {
119 case 'h':
120 old_locale = setlocale(LC_NUMERIC, "C");
121 if ((matches =
122 sscanf(optarg, DS_NAM_FMT ":%ld", ds_nam,
123 &heartbeat)) != 2) {
124 rrd_set_error("invalid arguments for heartbeat");
125 rrd_free(&rrd);
126 rrd_close(rrd_file);
127 setlocale(LC_NUMERIC, old_locale);
128 return -1;
129 }
130 setlocale(LC_NUMERIC, old_locale);
131 if ((ds = ds_match(&rrd, ds_nam)) == -1) {
132 rrd_free(&rrd);
133 rrd_close(rrd_file);
134 return -1;
135 }
136 rrd.ds_def[ds].par[DS_mrhb_cnt].u_cnt = heartbeat;
137 break;
139 case 'i':
140 old_locale = setlocale(LC_NUMERIC, "C");
141 if ((matches =
142 sscanf(optarg, DS_NAM_FMT ":%lf", ds_nam, &min)) < 1) {
143 rrd_set_error("invalid arguments for minimum ds value");
144 rrd_free(&rrd);
145 rrd_close(rrd_file);
146 setlocale(LC_NUMERIC, old_locale);
147 return -1;
148 }
149 setlocale(LC_NUMERIC, old_locale);
150 if ((ds = ds_match(&rrd, ds_nam)) == -1) {
151 rrd_free(&rrd);
152 rrd_close(rrd_file);
153 return -1;
154 }
156 if (matches == 1)
157 min = DNAN;
158 rrd.ds_def[ds].par[DS_min_val].u_val = min;
159 break;
161 case 'a':
162 old_locale = setlocale(LC_NUMERIC, "C");
163 if ((matches =
164 sscanf(optarg, DS_NAM_FMT ":%lf", ds_nam, &max)) < 1) {
165 rrd_set_error("invalid arguments for maximum ds value");
166 rrd_free(&rrd);
167 rrd_close(rrd_file);
168 setlocale(LC_NUMERIC, old_locale);
169 return -1;
170 }
171 setlocale(LC_NUMERIC, old_locale);
172 if ((ds = ds_match(&rrd, ds_nam)) == -1) {
173 rrd_free(&rrd);
174 rrd_close(rrd_file);
175 return -1;
176 }
177 if (matches == 1)
178 max = DNAN;
179 rrd.ds_def[ds].par[DS_max_val].u_val = max;
180 break;
182 case 'd':
183 if ((matches =
184 sscanf(optarg, DS_NAM_FMT ":" DST_FMT, ds_nam, dst)) != 2) {
185 rrd_set_error("invalid arguments for data source type");
186 rrd_free(&rrd);
187 rrd_close(rrd_file);
188 return -1;
189 }
190 if ((ds = ds_match(&rrd, ds_nam)) == -1) {
191 rrd_free(&rrd);
192 rrd_close(rrd_file);
193 return -1;
194 }
195 if ((int) dst_conv(dst) == -1) {
196 rrd_free(&rrd);
197 rrd_close(rrd_file);
198 return -1;
199 }
200 strncpy(rrd.ds_def[ds].dst, dst, DST_SIZE - 1);
201 rrd.ds_def[ds].dst[DST_SIZE - 1] = '\0';
203 rrd.pdp_prep[ds].last_ds[0] = 'U';
204 rrd.pdp_prep[ds].last_ds[1] = 'N';
205 rrd.pdp_prep[ds].last_ds[2] = 'K';
206 rrd.pdp_prep[ds].last_ds[3] = 'N';
207 rrd.pdp_prep[ds].last_ds[4] = '\0';
209 break;
210 case 'r':
211 if ((matches =
212 sscanf(optarg, DS_NAM_FMT ":" DS_NAM_FMT, ds_nam,
213 ds_new)) != 2) {
214 rrd_set_error("invalid arguments for data source type");
215 rrd_free(&rrd);
216 rrd_close(rrd_file);
217 return -1;
218 }
219 if ((ds = ds_match(&rrd, ds_nam)) == -1) {
220 rrd_free(&rrd);
221 rrd_close(rrd_file);
222 return -1;
223 }
224 strncpy(rrd.ds_def[ds].ds_nam, ds_new, DS_NAM_SIZE - 1);
225 rrd.ds_def[ds].ds_nam[DS_NAM_SIZE - 1] = '\0';
226 break;
227 case 'p':
228 if (set_deltaarg(&rrd, RRA_delta_pos, optarg)) {
229 rrd_free(&rrd);
230 return -1;
231 }
232 break;
233 case 'n':
234 if (set_deltaarg(&rrd, RRA_delta_neg, optarg)) {
235 rrd_free(&rrd);
236 return -1;
237 }
238 break;
239 case 'f':
240 if (set_windowarg(&rrd, RRA_failure_threshold, optarg)) {
241 rrd_free(&rrd);
242 return -1;
243 }
244 break;
245 case 'w':
246 if (set_windowarg(&rrd, RRA_window_len, optarg)) {
247 rrd_free(&rrd);
248 return -1;
249 }
250 break;
251 case 'x':
252 if (set_hwarg(&rrd, CF_HWPREDICT, RRA_hw_alpha, optarg)) {
253 if (set_hwarg(&rrd, CF_MHWPREDICT, RRA_hw_alpha, optarg)) {
254 rrd_free(&rrd);
255 return -1;
256 }
257 rrd_clear_error();
258 }
259 break;
260 case 'y':
261 if (set_hwarg(&rrd, CF_HWPREDICT, RRA_hw_beta, optarg)) {
262 if (set_hwarg(&rrd, CF_MHWPREDICT, RRA_hw_beta, optarg)) {
263 rrd_free(&rrd);
264 return -1;
265 }
266 rrd_clear_error();
267 }
268 break;
269 case 'z':
270 if (set_hwarg(&rrd, CF_SEASONAL, RRA_seasonal_gamma, optarg)) {
271 rrd_free(&rrd);
272 return -1;
273 }
274 break;
275 case 'v':
276 if (set_hwarg(&rrd, CF_DEVSEASONAL, RRA_seasonal_gamma, optarg)) {
277 rrd_free(&rrd);
278 return -1;
279 }
280 break;
281 case 'b':
282 if (sscanf(optarg, DS_NAM_FMT, ds_nam) != 1) {
283 rrd_set_error("invalid argument for aberrant-reset");
284 rrd_free(&rrd);
285 rrd_close(rrd_file);
286 return -1;
287 }
288 if ((ds = ds_match(&rrd, ds_nam)) == -1) {
289 /* ds_match handles it own errors */
290 rrd_free(&rrd);
291 rrd_close(rrd_file);
292 return -1;
293 }
294 reset_aberrant_coefficients(&rrd, rrd_file, (unsigned long) ds);
295 if (rrd_test_error()) {
296 rrd_free(&rrd);
297 rrd_close(rrd_file);
298 return -1;
299 }
300 break;
301 case 's':
302 strcpy(rrd.stat_head->version, RRD_VERSION); /* smoothing_window causes Version 4 */
303 if (set_hwarg(&rrd, CF_SEASONAL, RRA_seasonal_smoothing_window, optarg)) {
304 rrd_free(&rrd);
305 return -1;
306 }
307 break;
308 case 'S':
309 strcpy(rrd.stat_head->version, RRD_VERSION); /* smoothing_window causes Version 4 */
310 if (set_hwarg(&rrd, CF_DEVSEASONAL, RRA_seasonal_smoothing_window, optarg)) {
311 rrd_free(&rrd);
312 return -1;
313 }
314 break;
315 case '?':
316 if (optopt != 0)
317 rrd_set_error("unknown option '%c'", optopt);
318 else
319 rrd_set_error("unknown option '%s'", argv[optind - 1]);
320 rrd_free(&rrd);
321 rrd_close(rrd_file);
322 return -1;
323 }
324 }
325 if (optcnt > 0) {
326 rrd_seek(rrd_file, 0, SEEK_SET);
327 rrd_write(rrd_file, rrd.stat_head, sizeof(stat_head_t) * 1);
328 rrd_write(rrd_file, rrd.ds_def,
329 sizeof(ds_def_t) * rrd.stat_head->ds_cnt);
330 /* need to write rra_defs for RRA parameter changes */
331 rrd_write(rrd_file, rrd.rra_def,
332 sizeof(rra_def_t) * rrd.stat_head->rra_cnt);
333 } else {
334 int i;
336 for (i = 0; i < (int) rrd.stat_head->ds_cnt; i++)
337 if (dst_conv(rrd.ds_def[i].dst) != DST_CDEF) {
338 printf("DS[%s] typ: %s\thbt: %ld\tmin: %1.4f\tmax: %1.4f\n",
339 rrd.ds_def[i].ds_nam,
340 rrd.ds_def[i].dst,
341 rrd.ds_def[i].par[DS_mrhb_cnt].u_cnt,
342 rrd.ds_def[i].par[DS_min_val].u_val,
343 rrd.ds_def[i].par[DS_max_val].u_val);
344 } else {
345 char *buffer = NULL;
347 rpn_compact2str((rpn_cdefds_t *) &
348 (rrd.ds_def[i].par[DS_cdef]), rrd.ds_def,
349 &buffer);
350 printf("DS[%s] typ: %s\tcdef: %s\n", rrd.ds_def[i].ds_nam,
351 rrd.ds_def[i].dst, buffer);
352 free(buffer);
353 }
354 }
355 rrd_close(rrd_file);
356 rrd_free(&rrd);
357 return 0;
358 }
360 int set_hwarg(
361 rrd_t *rrd,
362 enum cf_en cf,
363 enum rra_par_en rra_par,
364 char *arg)
365 {
366 double param;
367 unsigned long i;
368 signed short rra_idx = -1;
370 /* read the value */
371 param = atof(arg);
372 if (param <= 0.0 || param >= 1.0) {
373 rrd_set_error("Holt-Winters parameter must be between 0 and 1");
374 return -1;
375 }
376 /* does the appropriate RRA exist? */
377 for (i = 0; i < rrd->stat_head->rra_cnt; ++i) {
378 if (cf_conv(rrd->rra_def[i].cf_nam) == cf) {
379 rra_idx = i;
380 break;
381 }
382 }
383 if (rra_idx == -1) {
384 rrd_set_error("Holt-Winters RRA does not exist in this RRD");
385 return -1;
386 }
388 /* set the value */
389 rrd->rra_def[rra_idx].par[rra_par].u_val = param;
390 return 0;
391 }
393 int set_deltaarg(
394 rrd_t *rrd,
395 enum rra_par_en rra_par,
396 char *arg)
397 {
398 rrd_value_t param;
399 unsigned long i;
400 signed short rra_idx = -1;
402 param = atof(arg);
403 if (param < 0.1) {
404 rrd_set_error("Parameter specified is too small");
405 return -1;
406 }
407 /* does the appropriate RRA exist? */
408 for (i = 0; i < rrd->stat_head->rra_cnt; ++i) {
409 if (cf_conv(rrd->rra_def[i].cf_nam) == CF_FAILURES) {
410 rra_idx = i;
411 break;
412 }
413 }
414 if (rra_idx == -1) {
415 rrd_set_error("Failures RRA does not exist in this RRD");
416 return -1;
417 }
419 /* set the value */
420 rrd->rra_def[rra_idx].par[rra_par].u_val = param;
421 return 0;
422 }
424 int set_windowarg(
425 rrd_t *rrd,
426 enum rra_par_en rra_par,
427 char *arg)
428 {
429 unsigned long param;
430 unsigned long i, cdp_idx;
431 signed short rra_idx = -1;
433 /* read the value */
434 param = atoi(arg);
435 if (param < 1 || param > MAX_FAILURES_WINDOW_LEN) {
436 rrd_set_error("Parameter must be between %d and %d",
437 1, MAX_FAILURES_WINDOW_LEN);
438 return -1;
439 }
440 /* does the appropriate RRA exist? */
441 for (i = 0; i < rrd->stat_head->rra_cnt; ++i) {
442 if (cf_conv(rrd->rra_def[i].cf_nam) == CF_FAILURES) {
443 rra_idx = i;
444 break;
445 }
446 }
447 if (rra_idx == -1) {
448 rrd_set_error("Failures RRA does not exist in this RRD");
449 return -1;
450 }
452 /* set the value */
453 rrd->rra_def[rra_idx].par[rra_par].u_cnt = param;
455 /* erase existing violations */
456 for (i = 0; i < rrd->stat_head->ds_cnt; i++) {
457 cdp_idx = rra_idx * (rrd->stat_head->ds_cnt) + i;
458 erase_violations(rrd, cdp_idx, rra_idx);
459 }
460 return 0;
461 }