3 void rrd_stats_api_v1_chart_with_data(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used)
5 pthread_rwlock_rdlock(&st->rwlock);
9 "\t\t\t\"id\": \"%s\",\n"
10 "\t\t\t\"name\": \"%s\",\n"
11 "\t\t\t\"type\": \"%s\",\n"
12 "\t\t\t\"family\": \"%s\",\n"
13 "\t\t\t\"context\": \"%s\",\n"
14 "\t\t\t\"title\": \"%s\",\n"
15 "\t\t\t\"priority\": %ld,\n"
16 "\t\t\t\"enabled\": %s,\n"
17 "\t\t\t\"units\": \"%s\",\n"
18 "\t\t\t\"data_url\": \"/api/v1/data?chart=%s\",\n"
19 "\t\t\t\"chart_type\": \"%s\",\n"
20 "\t\t\t\"duration\": %ld,\n"
21 "\t\t\t\"first_entry\": %ld,\n"
22 "\t\t\t\"last_entry\": %ld,\n"
23 "\t\t\t\"update_every\": %d,\n"
24 "\t\t\t\"dimensions\": {\n"
32 , st->enabled?"true":"false"
35 , rrdset_type_name(st->chart_type)
36 , st->entries * st->update_every
37 , rrdset_first_entry_t(st)
38 , rrdset_last_entry_t(st)
42 unsigned long memory = st->memsize;
44 size_t dimensions = 0;
46 for(rd = st->dimensions; rd ; rd = rd->next) {
47 if(rd->flags & RRDDIM_FLAG_HIDDEN) continue;
49 memory += rd->memsize;
53 "\t\t\t\t\"%s\": { \"name\": \"%s\" }"
62 if(dimensions_count) *dimensions_count += dimensions;
63 if(memory_used) *memory_used += memory;
65 buffer_strcat(wb, "\n\t\t\t},\n\t\t\t\"green\": ");
66 buffer_rrd_value(wb, st->green);
67 buffer_strcat(wb, ",\n\t\t\t\"red\": ");
68 buffer_rrd_value(wb, st->red);
74 pthread_rwlock_unlock(&st->rwlock);
77 void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb) {
78 rrd_stats_api_v1_chart_with_data(st, wb, NULL, NULL);
81 void rrd_stats_api_v1_charts(BUFFER *wb)
83 size_t c, dimensions = 0, memory = 0, alarms = 0;
86 buffer_sprintf(wb, "{\n"
87 "\t\"hostname\": \"%s\""
88 ",\n\t\"update_every\": %d"
89 ",\n\t\"history\": %d"
93 , rrd_default_history_entries
96 pthread_rwlock_rdlock(&localhost.rrdset_root_rwlock);
97 for(st = localhost.rrdset_root, c = 0; st ; st = st->next) {
98 if(st->enabled && st->dimensions) {
99 if(c) buffer_strcat(wb, ",");
100 buffer_strcat(wb, "\n\t\t\"");
101 buffer_strcat(wb, st->id);
102 buffer_strcat(wb, "\": ");
103 rrd_stats_api_v1_chart_with_data(st, wb, &dimensions, &memory);
109 for(rc = localhost.alarms; rc ; rc = rc->next) {
113 pthread_rwlock_unlock(&localhost.rrdset_root_rwlock);
115 buffer_sprintf(wb, "\n\t}"
116 ",\n\t\"charts_count\": %zu"
117 ",\n\t\"dimensions_count\": %zu"
118 ",\n\t\"alarms_count\": %zu"
119 ",\n\t\"rrd_memory_bytes\": %zu"
128 // ----------------------------------------------------------------------------
130 // /api/v1/allmetrics?format=prometheus
132 static inline size_t prometheus_name_copy(char *d, const char *s, size_t usable) {
135 for(n = 0; *s && n < usable ; d++, s++, n++) {
136 register char c = *s;
138 if(unlikely(!isalnum(c))) *d = '_';
146 #define PROMETHEUS_ELEMENT_MAX 256
148 void rrd_stats_api_v1_charts_allmetrics_prometheus(BUFFER *wb)
150 pthread_rwlock_rdlock(&localhost.rrdset_root_rwlock);
152 char host[PROMETHEUS_ELEMENT_MAX + 1];
153 prometheus_name_copy(host, config_get("global", "hostname", "localhost"), PROMETHEUS_ELEMENT_MAX);
157 for(st = localhost.rrdset_root; st ; st = st->next) {
158 char chart[PROMETHEUS_ELEMENT_MAX + 1];
159 prometheus_name_copy(chart, st->id, PROMETHEUS_ELEMENT_MAX);
161 buffer_strcat(wb, "\n");
162 if(st->enabled && st->dimensions) {
163 pthread_rwlock_rdlock(&st->rwlock);
165 // for each dimension
167 for(rd = st->dimensions; rd ; rd = rd->next) {
169 char dimension[PROMETHEUS_ELEMENT_MAX + 1];
170 prometheus_name_copy(dimension, rd->id, PROMETHEUS_ELEMENT_MAX);
172 // buffer_sprintf(wb, "# HELP %s.%s %s\n", st->id, rd->id, st->units);
174 switch(rd->algorithm) {
175 case RRDDIM_INCREMENTAL:
176 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
177 buffer_sprintf(wb, "# TYPE %s_%s counter\n", chart, dimension);
181 buffer_sprintf(wb, "# TYPE %s_%s gauge\n", chart, dimension);
185 // calculated_number n = (calculated_number)rd->last_collected_value * (calculated_number)(abs(rd->multiplier)) / (calculated_number)(abs(rd->divisor));
186 // buffer_sprintf(wb, "%s.%s " CALCULATED_NUMBER_FORMAT " %llu\n", st->id, rd->id, n,
187 // (unsigned long long)((rd->last_collected_time.tv_sec * 1000) + (rd->last_collected_time.tv_usec / 1000)));
189 buffer_sprintf(wb, "%s_%s{instance=\"%s\"} " COLLECTED_NUMBER_FORMAT " %llu\n",
190 chart, dimension, host, rd->last_collected_value,
191 (unsigned long long)((rd->last_collected_time.tv_sec * 1000) + (rd->last_collected_time.tv_usec / 1000)));
196 pthread_rwlock_unlock(&st->rwlock);
200 pthread_rwlock_unlock(&localhost.rrdset_root_rwlock);
203 // ----------------------------------------------------------------------------
205 // /api/v1/allmetrics?format=bash
207 static inline size_t shell_name_copy(char *d, const char *s, size_t usable) {
210 for(n = 0; *s && n < usable ; d++, s++, n++) {
211 register char c = *s;
213 if(unlikely(!isalnum(c))) *d = '_';
214 else *d = (char)toupper(c);
221 #define SHELL_ELEMENT_MAX 100
223 void rrd_stats_api_v1_charts_allmetrics_shell(BUFFER *wb)
225 pthread_rwlock_rdlock(&localhost.rrdset_root_rwlock);
227 char host[SHELL_ELEMENT_MAX + 1];
228 shell_name_copy(host, config_get("global", "hostname", "localhost"), SHELL_ELEMENT_MAX);
232 for(st = localhost.rrdset_root; st ; st = st->next) {
233 calculated_number total = 0.0;
234 char chart[SHELL_ELEMENT_MAX + 1];
235 shell_name_copy(chart, st->id, SHELL_ELEMENT_MAX);
237 buffer_sprintf(wb, "\n# chart: %s (name: %s)\n", st->id, st->name);
238 if(st->enabled && st->dimensions) {
239 pthread_rwlock_rdlock(&st->rwlock);
241 // for each dimension
243 for(rd = st->dimensions; rd ; rd = rd->next) {
245 char dimension[SHELL_ELEMENT_MAX + 1];
246 shell_name_copy(dimension, rd->id, SHELL_ELEMENT_MAX);
248 calculated_number n = rd->last_stored_value;
250 if(isnan(n) || isinf(n))
251 buffer_sprintf(wb, "NETDATA_%s_%s=\"\" # %s\n", chart, dimension, st->units);
253 if(rd->multiplier < 0 || rd->divisor < 0) n = -n;
255 if(!(rd->flags & RRDDIM_FLAG_HIDDEN)) total += n;
256 buffer_sprintf(wb, "NETDATA_%s_%s=\"%0.0Lf\" # %s\n", chart, dimension, n, st->units);
261 total = roundl(total);
262 buffer_sprintf(wb, "NETDATA_%s_VISIBLETOTAL=\"%0.0Lf\" # %s\n", chart, total, st->units);
263 pthread_rwlock_unlock(&st->rwlock);
267 buffer_strcat(wb, "\n# NETDATA ALARMS RUNNING\n");
270 for(rc = localhost.alarms; rc ;rc = rc->next) {
271 if(!rc->rrdset) continue;
273 char chart[SHELL_ELEMENT_MAX + 1];
274 shell_name_copy(chart, rc->rrdset->id, SHELL_ELEMENT_MAX);
276 char alarm[SHELL_ELEMENT_MAX + 1];
277 shell_name_copy(alarm, rc->name, SHELL_ELEMENT_MAX);
279 calculated_number n = rc->value;
281 if(isnan(n) || isinf(n))
282 buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"\" # %s\n", chart, alarm, rc->units);
285 buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"%0.0Lf\" # %s\n", chart, alarm, n, rc->units);
288 buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_STATUS=\"%s\"\n", chart, alarm, rrdcalc_status2string(rc->status));
291 pthread_rwlock_unlock(&localhost.rrdset_root_rwlock);
294 // ----------------------------------------------------------------------------
296 unsigned long rrd_stats_one_json(RRDSET *st, char *options, BUFFER *wb)
298 time_t now = now_realtime_sec();
300 pthread_rwlock_rdlock(&st->rwlock);
304 "\t\t\t\"id\": \"%s\",\n"
305 "\t\t\t\"name\": \"%s\",\n"
306 "\t\t\t\"type\": \"%s\",\n"
307 "\t\t\t\"family\": \"%s\",\n"
308 "\t\t\t\"context\": \"%s\",\n"
309 "\t\t\t\"title\": \"%s\",\n"
310 "\t\t\t\"priority\": %ld,\n"
311 "\t\t\t\"enabled\": %d,\n"
312 "\t\t\t\"units\": \"%s\",\n"
313 "\t\t\t\"url\": \"/data/%s/%s\",\n"
314 "\t\t\t\"chart_type\": \"%s\",\n"
315 "\t\t\t\"counter\": %lu,\n"
316 "\t\t\t\"entries\": %ld,\n"
317 "\t\t\t\"first_entry_t\": %ld,\n"
318 "\t\t\t\"last_entry\": %lu,\n"
319 "\t\t\t\"last_entry_t\": %ld,\n"
320 "\t\t\t\"last_entry_secs_ago\": %ld,\n"
321 "\t\t\t\"update_every\": %d,\n"
322 "\t\t\t\"isdetail\": %d,\n"
323 "\t\t\t\"usec_since_last_update\": %llu,\n"
324 "\t\t\t\"collected_total\": " TOTAL_NUMBER_FORMAT ",\n"
325 "\t\t\t\"last_collected_total\": " TOTAL_NUMBER_FORMAT ",\n"
326 "\t\t\t\"dimensions\": [\n"
336 , st->name, options?options:""
337 , rrdset_type_name(st->chart_type)
340 , rrdset_first_entry_t(st)
341 , rrdset_last_slot(st)
342 , rrdset_last_entry_t(st)
343 , (now < rrdset_last_entry_t(st)) ? (time_t)0 : now - rrdset_last_entry_t(st)
346 , st->usec_since_last_update
347 , st->collected_total
348 , st->last_collected_total
351 unsigned long memory = st->memsize;
354 for(rd = st->dimensions; rd ; rd = rd->next) {
356 memory += rd->memsize;
360 "\t\t\t\t\t\"id\": \"%s\",\n"
361 "\t\t\t\t\t\"name\": \"%s\",\n"
362 "\t\t\t\t\t\"entries\": %ld,\n"
363 "\t\t\t\t\t\"isHidden\": %d,\n"
364 "\t\t\t\t\t\"algorithm\": \"%s\",\n"
365 "\t\t\t\t\t\"multiplier\": %ld,\n"
366 "\t\t\t\t\t\"divisor\": %ld,\n"
367 "\t\t\t\t\t\"last_entry_t\": %ld,\n"
368 "\t\t\t\t\t\"collected_value\": " COLLECTED_NUMBER_FORMAT ",\n"
369 "\t\t\t\t\t\"calculated_value\": " CALCULATED_NUMBER_FORMAT ",\n"
370 "\t\t\t\t\t\"last_collected_value\": " COLLECTED_NUMBER_FORMAT ",\n"
371 "\t\t\t\t\t\"last_calculated_value\": " CALCULATED_NUMBER_FORMAT ",\n"
372 "\t\t\t\t\t\"memory\": %lu\n"
377 , (rd->flags & RRDDIM_FLAG_HIDDEN)?1:0
378 , rrddim_algorithm_name(rd->algorithm)
381 , rd->last_collected_time.tv_sec
382 , rd->collected_value
383 , rd->calculated_value
384 , rd->last_collected_value
385 , rd->last_calculated_value
393 "\t\t\t\"memory\" : %lu\n"
398 pthread_rwlock_unlock(&st->rwlock);
402 #define RRD_GRAPH_JSON_HEADER "{\n\t\"charts\": [\n"
403 #define RRD_GRAPH_JSON_FOOTER "\n\t]\n}\n"
405 void rrd_stats_graph_json(RRDSET *st, char *options, BUFFER *wb)
407 buffer_strcat(wb, RRD_GRAPH_JSON_HEADER);
408 rrd_stats_one_json(st, options, wb);
409 buffer_strcat(wb, RRD_GRAPH_JSON_FOOTER);
412 void rrd_stats_all_json(BUFFER *wb)
414 unsigned long memory = 0;
418 buffer_strcat(wb, RRD_GRAPH_JSON_HEADER);
420 pthread_rwlock_rdlock(&localhost.rrdset_root_rwlock);
421 for(st = localhost.rrdset_root, c = 0; st ; st = st->next) {
422 if(st->enabled && st->dimensions) {
423 if(c) buffer_strcat(wb, ",\n");
424 memory += rrd_stats_one_json(st, NULL, wb);
428 pthread_rwlock_unlock(&localhost.rrdset_root_rwlock);
430 buffer_sprintf(wb, "\n\t],\n"
431 "\t\"hostname\": \"%s\",\n"
432 "\t\"update_every\": %d,\n"
433 "\t\"history\": %d,\n"
434 "\t\"memory\": %lu\n"
438 , rrd_default_history_entries
445 // ----------------------------------------------------------------------------
447 // RRDR dimension options
448 #define RRDR_EMPTY 0x01 // the dimension contains / the value is empty (null)
449 #define RRDR_RESET 0x02 // the dimension contains / the value is reset
450 #define RRDR_HIDDEN 0x04 // the dimension contains / the value is hidden
451 #define RRDR_NONZERO 0x08 // the dimension contains / the value is non-zero
453 // RRDR result options
454 #define RRDR_RESULT_OPTION_ABSOLUTE 0x00000001
455 #define RRDR_RESULT_OPTION_RELATIVE 0x00000002
457 typedef struct rrdresult {
458 RRDSET *st; // the chart this result refers to
460 uint32_t result_options; // RRDR_RESULT_OPTION_*
462 int d; // the number of dimensions
463 long n; // the number of values in the arrays
464 long rows; // the number of rows used
466 uint8_t *od; // the options for the dimensions
468 time_t *t; // array of n timestamps
469 calculated_number *v; // array n x d values
470 uint8_t *o; // array n x d options
472 long c; // current line ( -1 ~ n ), ( -1 = none, use rrdr_rows() to get number of rows )
474 long group; // how many collected values were grouped for each row
475 int update_every; // what is the suggested update frequency in seconds
477 calculated_number min;
478 calculated_number max;
483 int has_st_lock; // if st is read locked by us
486 #define rrdr_rows(r) ((r)->rows)
489 static void rrdr_dump(RRDR *r)
494 fprintf(stderr, "\nCHART %s (%s)\n", r->st->id, r->st->name);
496 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
497 fprintf(stderr, "DIMENSION %s (%s), %s%s%s%s\n"
500 , (r->od[c] & RRDR_EMPTY)?"EMPTY ":""
501 , (r->od[c] & RRDR_RESET)?"RESET ":""
502 , (r->od[c] & RRDR_HIDDEN)?"HIDDEN ":""
503 , (r->od[c] & RRDR_NONZERO)?"NONZERO ":""
508 fprintf(stderr, "RRDR does not have any values in it.\n");
512 fprintf(stderr, "RRDR includes %d values in it:\n", r->rows);
514 // for each line in the array
515 for(i = 0; i < r->rows ;i++) {
516 calculated_number *cn = &r->v[ i * r->d ];
517 uint8_t *co = &r->o[ i * r->d ];
519 // print the id and the timestamp of the line
520 fprintf(stderr, "%ld %ld ", i + 1, r->t[i]);
522 // for each dimension
523 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
524 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
525 if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
527 if(co[c] & RRDR_EMPTY)
528 fprintf(stderr, "null ");
530 fprintf(stderr, CALCULATED_NUMBER_FORMAT " %s%s%s%s "
532 , (co[c] & RRDR_EMPTY)?"E":" "
533 , (co[c] & RRDR_RESET)?"R":" "
534 , (co[c] & RRDR_HIDDEN)?"H":" "
535 , (co[c] & RRDR_NONZERO)?"N":" "
539 fprintf(stderr, "\n");
544 void rrdr_disable_not_selected_dimensions(RRDR *r, const char *dims)
546 char b[strlen(dims) + 1];
553 // disable all of them
554 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next)
555 r->od[c] |= RRDR_HIDDEN;
557 while(o && *o && (tok = mystrsep(&o, ",|"))) {
560 uint32_t hash = simple_hash(tok);
562 // find it and enable it
563 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
564 if(unlikely((hash == d->hash && !strcmp(d->id, tok)) || !strcmp(d->name, tok))) {
565 r->od[c] &= ~RRDR_HIDDEN;
567 // since the user needs this dimension
568 // make it appear as NONZERO, to return it
569 // even if the dimension has only zeros
570 r->od[c] |= RRDR_NONZERO;
576 void rrdr_buffer_print_format(BUFFER *wb, uint32_t format)
579 case DATASOURCE_JSON:
580 buffer_strcat(wb, DATASOURCE_FORMAT_JSON);
583 case DATASOURCE_DATATABLE_JSON:
584 buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSON);
587 case DATASOURCE_DATATABLE_JSONP:
588 buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSONP);
591 case DATASOURCE_JSONP:
592 buffer_strcat(wb, DATASOURCE_FORMAT_JSONP);
596 buffer_strcat(wb, DATASOURCE_FORMAT_SSV);
600 buffer_strcat(wb, DATASOURCE_FORMAT_CSV);
604 buffer_strcat(wb, DATASOURCE_FORMAT_TSV);
607 case DATASOURCE_HTML:
608 buffer_strcat(wb, DATASOURCE_FORMAT_HTML);
611 case DATASOURCE_JS_ARRAY:
612 buffer_strcat(wb, DATASOURCE_FORMAT_JS_ARRAY);
615 case DATASOURCE_SSV_COMMA:
616 buffer_strcat(wb, DATASOURCE_FORMAT_SSV_COMMA);
620 buffer_strcat(wb, "unknown");
625 uint32_t rrdr_check_options(RRDR *r, uint32_t options, const char *dims)
627 if(options & RRDR_OPTION_NONZERO) {
631 // the caller wants specific dimensions
632 // disable NONZERO option
633 // to make sure we don't accidentally prevent
634 // the specific dimensions from being returned
638 // find how many dimensions are not zero
641 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ; c++, rd = rd->next) {
642 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
643 if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
648 // if with nonzero we get i = 0 (no dimensions will be returned)
649 // disable nonzero to show all dimensions
650 if(!i) options &= ~RRDR_OPTION_NONZERO;
656 void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
658 long rows = rrdr_rows(r);
662 //info("JSONWRAPPER(): %s: BEGIN", r->st->id);
663 char kq[2] = "", // key quote
664 sq[2] = ""; // string quote
666 if( options & RRDR_OPTION_GOOGLE_JSON ) {
675 buffer_sprintf(wb, "{\n"
678 " %sname%s: %s%s%s,\n"
679 " %sview_update_every%s: %d,\n"
680 " %supdate_every%s: %d,\n"
681 " %sfirst_entry%s: %u,\n"
682 " %slast_entry%s: %u,\n"
685 " %sdimension_names%s: ["
687 , kq, kq, sq, r->st->id, sq
688 , kq, kq, sq, r->st->name, sq
689 , kq, kq, r->update_every
690 , kq, kq, r->st->update_every
691 , kq, kq, (uint32_t)rrdset_first_entry_t(r->st)
692 , kq, kq, (uint32_t)rrdset_last_entry_t(r->st)
693 , kq, kq, (uint32_t)r->before
694 , kq, kq, (uint32_t)r->after
697 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
698 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
699 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
701 if(i) buffer_strcat(wb, ", ");
702 buffer_strcat(wb, sq);
703 buffer_strcat(wb, rd->name);
704 buffer_strcat(wb, sq);
708 #ifdef NETDATA_INTERNAL_CHECKS
709 error("RRDR is empty for %s (RRDR has %d dimensions, options is 0x%08x)", r->st->id, r->d, options);
712 buffer_strcat(wb, sq);
713 buffer_strcat(wb, "no data");
714 buffer_strcat(wb, sq);
717 buffer_sprintf(wb, "],\n"
718 " %sdimension_ids%s: ["
721 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
722 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
723 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
725 if(i) buffer_strcat(wb, ", ");
726 buffer_strcat(wb, sq);
727 buffer_strcat(wb, rd->id);
728 buffer_strcat(wb, sq);
733 buffer_strcat(wb, sq);
734 buffer_strcat(wb, "no data");
735 buffer_strcat(wb, sq);
738 buffer_sprintf(wb, "],\n"
739 " %slatest_values%s: ["
742 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
743 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
744 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
746 if(i) buffer_strcat(wb, ", ");
749 storage_number n = rd->values[rrdset_last_slot(r->st)];
751 if(!does_storage_number_exist(n))
752 buffer_strcat(wb, "null");
754 buffer_rrd_value(wb, unpack_storage_number(n));
758 buffer_strcat(wb, "null");
761 buffer_sprintf(wb, "],\n"
762 " %sview_latest_values%s: ["
767 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
768 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
769 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
771 if(i) buffer_strcat(wb, ", ");
774 calculated_number *cn = &r->v[ (0) * r->d ];
775 uint8_t *co = &r->o[ (0) * r->d ];
777 if(co[c] & RRDR_EMPTY)
778 buffer_strcat(wb, "null");
780 buffer_rrd_value(wb, cn[c]);
785 buffer_strcat(wb, "null");
788 buffer_sprintf(wb, "],\n"
789 " %sdimensions%s: %ld,\n"
790 " %spoints%s: %ld,\n"
797 rrdr_buffer_print_format(wb, format);
799 buffer_sprintf(wb, "%s,\n"
805 if(string_value) buffer_strcat(wb, sq);
806 //info("JSONWRAPPER(): %s: END", r->st->id);
809 void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
813 char kq[2] = "", // key quote
814 sq[2] = ""; // string quote
816 if( options & RRDR_OPTION_GOOGLE_JSON ) {
825 if(string_value) buffer_strcat(wb, sq);
827 buffer_sprintf(wb, ",\n %smin%s: ", kq, kq);
828 buffer_rrd_value(wb, r->min);
829 buffer_sprintf(wb, ",\n %smax%s: ", kq, kq);
830 buffer_rrd_value(wb, r->max);
831 buffer_strcat(wb, "\n}\n");
834 #define JSON_DATES_JS 1
835 #define JSON_DATES_TIMESTAMP 2
837 static void rrdr2json(RRDR *r, BUFFER *wb, uint32_t options, int datatable)
839 //info("RRD2JSON(): %s: BEGIN", r->st->id);
840 int row_annotations = 0, dates, dates_with_new = 0;
841 char kq[2] = "", // key quote
842 sq[2] = "", // string quote
843 pre_label[101] = "", // before each label
844 post_label[101] = "", // after each label
845 pre_date[101] = "", // the beginning of line, to the date
846 post_date[101] = "", // closing the date
847 pre_value[101] = "", // before each value
848 post_value[101] = "", // after each value
849 post_line[101] = "", // at the end of each row
850 normal_annotation[201] = "", // default row annotation
851 overflow_annotation[201] = "", // overflow row annotation
852 data_begin[101] = "", // between labels and values
853 finish[101] = ""; // at the end of everything
856 dates = JSON_DATES_JS;
857 if( options & RRDR_OPTION_GOOGLE_JSON ) {
866 snprintfz(pre_date, 100, " {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
867 snprintfz(post_date, 100, "%s}", sq);
868 snprintfz(pre_label, 100, ",\n {%sid%s:%s%s,%slabel%s:%s", kq, kq, sq, sq, kq, kq, sq);
869 snprintfz(post_label, 100, "%s,%spattern%s:%s%s,%stype%s:%snumber%s}", sq, kq, kq, sq, sq, kq, kq, sq, sq);
870 snprintfz(pre_value, 100, ",{%sv%s:", kq, kq);
871 strcpy(post_value, "}");
872 strcpy(post_line, "]}");
873 snprintfz(data_begin, 100, "\n ],\n %srows%s:\n [\n", kq, kq);
874 strcpy(finish, "\n ]\n}");
876 snprintfz(overflow_annotation, 200, ",{%sv%s:%sRESET OR OVERFLOW%s},{%sv%s:%sThe counters have been wrapped.%s}", kq, kq, sq, sq, kq, kq, sq, sq);
877 snprintfz(normal_annotation, 200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
879 buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
880 buffer_sprintf(wb, " {%sid%s:%s%s,%slabel%s:%stime%s,%spattern%s:%s%s,%stype%s:%sdatetime%s},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq);
881 buffer_sprintf(wb, " {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotation%s}},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
882 buffer_sprintf(wb, " {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotationText%s}}", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
884 // remove the valueobjects flag
885 // google wants its own keys
886 if(options & RRDR_OPTION_OBJECTSROWS)
887 options &= ~RRDR_OPTION_OBJECTSROWS;
892 if((options & RRDR_OPTION_SECONDS) || (options & RRDR_OPTION_MILLISECONDS)) {
893 dates = JSON_DATES_TIMESTAMP;
897 dates = JSON_DATES_JS;
900 if( options & RRDR_OPTION_OBJECTSROWS )
901 strcpy(pre_date, " { ");
903 strcpy(pre_date, " [ ");
904 strcpy(pre_label, ", \"");
905 strcpy(post_label, "\"");
906 strcpy(pre_value, ", ");
907 if( options & RRDR_OPTION_OBJECTSROWS )
908 strcpy(post_line, "}");
910 strcpy(post_line, "]");
911 snprintfz(data_begin, 100, "],\n %sdata%s:\n [\n", kq, kq);
912 strcpy(finish, "\n ]\n}");
914 buffer_sprintf(wb, "{\n %slabels%s: [", kq, kq);
915 buffer_sprintf(wb, "%stime%s", sq, sq);
918 // -------------------------------------------------------------------------
919 // print the JSON header
924 // print the header lines
925 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
926 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
927 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
929 buffer_strcat(wb, pre_label);
930 buffer_strcat(wb, rd->name);
931 buffer_strcat(wb, post_label);
935 buffer_strcat(wb, pre_label);
936 buffer_strcat(wb, "no data");
937 buffer_strcat(wb, post_label);
940 // print the begin of row data
941 buffer_strcat(wb, data_begin);
943 // if all dimensions are hidden, print a null
945 buffer_strcat(wb, finish);
949 long start = 0, end = rrdr_rows(r), step = 1;
950 if((options & RRDR_OPTION_REVERSED)) {
951 start = rrdr_rows(r) - 1;
956 // for each line in the array
957 calculated_number total = 1;
958 for(i = start; i != end ;i += step) {
959 calculated_number *cn = &r->v[ i * r->d ];
960 uint8_t *co = &r->o[ i * r->d ];
962 time_t now = r->t[i];
964 if(dates == JSON_DATES_JS) {
965 // generate the local date time
966 struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
967 if(!tm) { error("localtime_r() failed."); continue; }
969 if(likely(i != start)) buffer_strcat(wb, ",\n");
970 buffer_strcat(wb, pre_date);
972 if( options & RRDR_OPTION_OBJECTSROWS )
973 buffer_sprintf(wb, "%stime%s: ", kq, kq);
976 buffer_strcat(wb, "new ");
978 buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
980 buffer_strcat(wb, post_date);
982 if(row_annotations) {
983 // google supports one annotation per row
984 int annotation_found = 0;
985 for(c = 0, rd = r->st->dimensions; rd ;c++, rd = rd->next) {
986 if(co[c] & RRDR_RESET) {
987 buffer_strcat(wb, overflow_annotation);
988 annotation_found = 1;
992 if(!annotation_found)
993 buffer_strcat(wb, normal_annotation);
997 // print the timestamp of the line
998 if(likely(i != start)) buffer_strcat(wb, ",\n");
999 buffer_strcat(wb, pre_date);
1001 if( options & RRDR_OPTION_OBJECTSROWS )
1002 buffer_sprintf(wb, "%stime%s: ", kq, kq);
1004 buffer_rrd_value(wb, (calculated_number)r->t[i]);
1006 if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
1008 buffer_strcat(wb, post_date);
1011 if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
1013 for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
1014 calculated_number n = cn[c];
1016 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1021 // prevent a division by zero
1022 if(total == 0) total = 1;
1025 // for each dimension
1026 for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
1027 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
1028 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
1030 calculated_number n = cn[c];
1032 buffer_strcat(wb, pre_value);
1034 if( options & RRDR_OPTION_OBJECTSROWS )
1035 buffer_sprintf(wb, "%s%s%s: ", kq, rd->name, kq);
1037 if(co[c] & RRDR_EMPTY) {
1038 if(options & RRDR_OPTION_NULL2ZERO)
1039 buffer_strcat(wb, "0");
1041 buffer_strcat(wb, "null");
1044 if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1047 if(unlikely(options & RRDR_OPTION_PERCENTAGE))
1048 n = n * 100 / total;
1050 buffer_rrd_value(wb, n);
1053 buffer_strcat(wb, post_value);
1056 buffer_strcat(wb, post_line);
1059 buffer_strcat(wb, finish);
1060 //info("RRD2JSON(): %s: END", r->st->id);
1063 static void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t options, const char *startline, const char *separator, const char *endline, const char *betweenlines)
1065 //info("RRD2CSV(): %s: BEGIN", r->st->id);
1069 // print the csv header
1070 for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1071 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
1072 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
1075 buffer_strcat(wb, startline);
1076 if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
1077 buffer_strcat(wb, "time");
1078 if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
1080 buffer_strcat(wb, separator);
1081 if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
1082 buffer_strcat(wb, d->name);
1083 if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
1086 buffer_strcat(wb, endline);
1089 // no dimensions present
1093 long start = 0, end = rrdr_rows(r), step = 1;
1094 if((options & RRDR_OPTION_REVERSED)) {
1095 start = rrdr_rows(r) - 1;
1100 // for each line in the array
1101 calculated_number total = 1;
1102 for(i = start; i != end ;i += step) {
1103 calculated_number *cn = &r->v[ i * r->d ];
1104 uint8_t *co = &r->o[ i * r->d ];
1106 buffer_strcat(wb, betweenlines);
1107 buffer_strcat(wb, startline);
1109 time_t now = r->t[i];
1111 if((options & RRDR_OPTION_SECONDS) || (options & RRDR_OPTION_MILLISECONDS)) {
1112 // print the timestamp of the line
1113 buffer_rrd_value(wb, (calculated_number)now);
1115 if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
1118 // generate the local date time
1119 struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
1120 if(!tm) { error("localtime() failed."); continue; }
1121 buffer_date(wb, tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
1124 if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
1126 for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1127 calculated_number n = cn[c];
1129 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1134 // prevent a division by zero
1135 if(total == 0) total = 1;
1138 // for each dimension
1139 for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1140 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
1141 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
1143 buffer_strcat(wb, separator);
1145 calculated_number n = cn[c];
1147 if(co[c] & RRDR_EMPTY) {
1148 if(options & RRDR_OPTION_NULL2ZERO)
1149 buffer_strcat(wb, "0");
1151 buffer_strcat(wb, "null");
1154 if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1157 if(unlikely(options & RRDR_OPTION_PERCENTAGE))
1158 n = n * 100 / total;
1160 buffer_rrd_value(wb, n);
1164 buffer_strcat(wb, endline);
1166 //info("RRD2CSV(): %s: END", r->st->id);
1169 inline static calculated_number rrdr2value(RRDR *r, long i, uint32_t options, int *all_values_are_null) {
1173 calculated_number *cn = &r->v[ i * r->d ];
1174 uint8_t *co = &r->o[ i * r->d ];
1176 calculated_number sum = 0, min = 0, max = 0, v;
1177 int all_null = 1, init = 1;
1179 calculated_number total = 1;
1180 if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
1182 for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1183 calculated_number n = cn[c];
1185 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1190 // prevent a division by zero
1191 if(total == 0) total = 1;
1194 // for each dimension
1195 for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1196 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
1197 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
1199 calculated_number n = cn[c];
1201 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1204 if(unlikely(options & RRDR_OPTION_PERCENTAGE))
1205 n = n * 100 / total;
1207 if(unlikely(init)) {
1219 if(likely(!(co[c] & RRDR_EMPTY))) {
1224 if(n < min) min = n;
1225 if(n > max) max = n;
1228 if(unlikely(all_null)) {
1229 if(likely(all_values_are_null))
1230 *all_values_are_null = 1;
1234 if(likely(all_values_are_null))
1235 *all_values_are_null = 0;
1238 if(options & RRDR_OPTION_MIN2MAX)
1246 static void rrdr2ssv(RRDR *r, BUFFER *wb, uint32_t options, const char *prefix, const char *separator, const char *suffix)
1248 //info("RRD2SSV(): %s: BEGIN", r->st->id);
1251 buffer_strcat(wb, prefix);
1252 long start = 0, end = rrdr_rows(r), step = 1;
1253 if((options & RRDR_OPTION_REVERSED)) {
1254 start = rrdr_rows(r) - 1;
1259 // for each line in the array
1260 for(i = start; i != end ;i += step) {
1261 int all_values_are_null = 0;
1262 calculated_number v = rrdr2value(r, i, options, &all_values_are_null);
1264 if(likely(i != start)) {
1265 if(r->min > v) r->min = v;
1266 if(r->max < v) r->max = v;
1273 if(likely(i != start))
1274 buffer_strcat(wb, separator);
1276 if(all_values_are_null) {
1277 if(options & RRDR_OPTION_NULL2ZERO)
1278 buffer_strcat(wb, "0");
1280 buffer_strcat(wb, "null");
1283 buffer_rrd_value(wb, v);
1285 buffer_strcat(wb, suffix);
1286 //info("RRD2SSV(): %s: END", r->st->id);
1289 inline static calculated_number *rrdr_line_values(RRDR *r)
1291 return &r->v[ r->c * r->d ];
1294 inline static uint8_t *rrdr_line_options(RRDR *r)
1296 return &r->o[ r->c * r->d ];
1299 inline static int rrdr_line_init(RRDR *r, time_t t)
1303 if(unlikely(r->c >= r->n)) {
1304 error("requested to step above RRDR size for chart %s", r->st->name);
1314 inline static void rrdr_lock_rrdset(RRDR *r) {
1316 error("NULL value given!");
1320 pthread_rwlock_rdlock(&r->st->rwlock);
1324 inline static void rrdr_unlock_rrdset(RRDR *r) {
1326 error("NULL value given!");
1330 if(likely(r->has_st_lock)) {
1331 pthread_rwlock_unlock(&r->st->rwlock);
1336 inline static void rrdr_free(RRDR *r)
1339 error("NULL value given!");
1343 rrdr_unlock_rrdset(r);
1351 static inline void rrdr_done(RRDR *r)
1357 static RRDR *rrdr_create(RRDSET *st, long n)
1360 error("NULL value given!");
1364 RRDR *r = callocz(1, sizeof(RRDR));
1367 rrdr_lock_rrdset(r);
1370 for(rd = st->dimensions ; rd ; rd = rd->next) r->d++;
1374 r->t = mallocz(n * sizeof(time_t));
1375 r->v = mallocz(n * r->d * sizeof(calculated_number));
1376 r->o = mallocz(n * r->d * sizeof(uint8_t));
1377 r->od = mallocz(r->d * sizeof(uint8_t));
1379 // set the hidden flag on hidden dimensions
1381 for(c = 0, rd = st->dimensions ; rd ; c++, rd = rd->next) {
1382 if(unlikely(rd->flags & RRDDIM_FLAG_HIDDEN)) r->od[c] = RRDR_HIDDEN;
1388 r->update_every = 1;
1393 RRDR *rrd2rrdr(RRDSET *st, long points, long long after, long long before, int group_method, int aligned)
1395 int debug = st->debug;
1396 int absolute_period_requested = -1;
1398 time_t first_entry_t = rrdset_first_entry_t(st);
1399 time_t last_entry_t = rrdset_last_entry_t(st);
1401 if(before == 0 && after == 0) {
1402 // dump the all the data
1403 before = last_entry_t;
1404 after = first_entry_t;
1405 absolute_period_requested = 0;
1408 // allow relative for before (smaller than API_RELATIVE_TIME_MAX)
1409 if(((before < 0)?-before:before) <= API_RELATIVE_TIME_MAX) {
1410 if(abs(before) % st->update_every) {
1411 // make sure it is multiple of st->update_every
1412 if(before < 0) before = before - st->update_every - before % st->update_every;
1413 else before = before + st->update_every - before % st->update_every;
1415 if(before > 0) before = first_entry_t + before;
1416 else before = last_entry_t + before;
1417 absolute_period_requested = 0;
1420 // allow relative for after (smaller than API_RELATIVE_TIME_MAX)
1421 if(((after < 0)?-after:after) <= API_RELATIVE_TIME_MAX) {
1422 if(after == 0) after = -st->update_every;
1423 if(abs(after) % st->update_every) {
1424 // make sure it is multiple of st->update_every
1425 if(after < 0) after = after - st->update_every - after % st->update_every;
1426 else after = after + st->update_every - after % st->update_every;
1428 after = before + after;
1429 absolute_period_requested = 0;
1432 if(absolute_period_requested == -1)
1433 absolute_period_requested = 1;
1435 // make sure they are within our timeframe
1436 if(before > last_entry_t) before = last_entry_t;
1437 if(before < first_entry_t) before = first_entry_t;
1439 if(after > last_entry_t) after = last_entry_t;
1440 if(after < first_entry_t) after = first_entry_t;
1442 // check if they are upside down
1443 if(after > before) {
1444 time_t tmp = before;
1449 // the duration of the chart
1450 time_t duration = before - after;
1451 long available_points = duration / st->update_every;
1453 if(duration <= 0 || available_points <= 0)
1454 return rrdr_create(st, 1);
1456 // check the wanted points
1457 if(points < 0) points = -points;
1458 if(points > available_points) points = available_points;
1459 if(points == 0) points = available_points;
1461 // calculate proper grouping of source data
1462 long group = available_points / points;
1463 if(group <= 0) group = 1;
1465 // round group to the closest integer
1466 if(available_points % points > points / 2) group++;
1468 time_t after_new = (aligned) ? (after - (after % (group * st->update_every))) : after;
1469 time_t before_new = (aligned) ? (before - (before % (group * st->update_every))) : before;
1470 long points_new = (before_new - after_new) / st->update_every / group;
1472 // find the starting and ending slots in our round robin db
1473 long start_at_slot = rrdset_time2slot(st, before_new),
1474 stop_at_slot = rrdset_time2slot(st, after_new);
1476 #ifdef NETDATA_INTERNAL_CHECKS
1477 if(after_new < first_entry_t) {
1478 error("after_new %u is too small, minimum %u", (uint32_t)after_new, (uint32_t)first_entry_t);
1480 if(after_new > last_entry_t) {
1481 error("after_new %u is too big, maximum %u", (uint32_t)after_new, (uint32_t)last_entry_t);
1483 if(before_new < first_entry_t) {
1484 error("before_new %u is too small, minimum %u", (uint32_t)before_new, (uint32_t)first_entry_t);
1486 if(before_new > last_entry_t) {
1487 error("before_new %u is too big, maximum %u", (uint32_t)before_new, (uint32_t)last_entry_t);
1489 if(start_at_slot < 0 || start_at_slot >= st->entries) {
1490 error("start_at_slot is invalid %ld, expected 0 to %ld", start_at_slot, st->entries - 1);
1492 if(stop_at_slot < 0 || stop_at_slot >= st->entries) {
1493 error("stop_at_slot is invalid %ld, expected 0 to %ld", stop_at_slot, st->entries - 1);
1495 if(points_new > (before_new - after_new) / group / st->update_every + 1) {
1496 error("points_new %ld is more than points %ld", points_new, (before_new - after_new) / group / st->update_every + 1);
1500 //info("RRD2RRDR(): %s: wanted %ld points, got %ld - group=%ld, wanted duration=%u, got %u - wanted %ld - %ld, got %ld - %ld", st->id, points, points_new, group, before - after, before_new - after_new, after, before, after_new, before_new);
1503 before = before_new;
1504 duration = before - after;
1505 points = points_new;
1508 // before = the end time of the calculation
1509 // after = the start time of the calculation
1510 // duration = the duration of the calculation
1511 // group = the number of source points to aggregate / group together
1512 // method = the method of grouping source points
1513 // points = the number of points to generate
1516 // -------------------------------------------------------------------------
1517 // initialize our result set
1519 RRDR *r = rrdr_create(st, points);
1521 #ifdef NETDATA_INTERNAL_CHECKS
1522 error("Cannot create RRDR for %s, after=%u, before=%u, duration=%u, points=%ld", st->id, (uint32_t)after, (uint32_t)before, (uint32_t)duration, points);
1527 #ifdef NETDATA_INTERNAL_CHECKS
1528 error("Returning empty RRDR (no dimensions in RRDSET) for %s, after=%u, before=%u, duration=%u, points=%ld", st->id, (uint32_t)after, (uint32_t)before, (uint32_t)duration, points);
1533 if(absolute_period_requested == 1)
1534 r->result_options |= RRDR_RESULT_OPTION_ABSOLUTE;
1536 r->result_options |= RRDR_RESULT_OPTION_RELATIVE;
1538 // find how many dimensions we have
1539 long dimensions = r->d;
1542 // -------------------------------------------------------------------------
1543 // checks for debugging
1545 if(debug) debug(D_RRD_STATS, "INFO %s first_t: %u, last_t: %u, all_duration: %u, after: %u, before: %u, duration: %u, points: %ld, group: %ld"
1547 , (uint32_t)first_entry_t
1548 , (uint32_t)last_entry_t
1549 , (uint32_t)(last_entry_t - first_entry_t)
1552 , (uint32_t)duration
1558 // -------------------------------------------------------------------------
1559 // temp arrays for keeping values per dimension
1561 calculated_number last_values[dimensions]; // keep the last value of each dimension
1562 calculated_number group_values[dimensions]; // keep sums when grouping
1563 long group_counts[dimensions]; // keep the number of values added to group_values
1564 uint8_t group_options[dimensions];
1565 uint8_t found_non_zero[dimensions];
1571 for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
1573 group_values[c] = (group_method == GROUP_MAX || group_method == GROUP_MIN)?NAN:0;
1574 group_counts[c] = 0;
1575 group_options[c] = 0;
1576 found_non_zero[c] = 0;
1580 // -------------------------------------------------------------------------
1583 time_t now = rrdset_slot2time(st, start_at_slot),
1584 dt = st->update_every,
1587 if(unlikely(debug)) debug(D_RRD_STATS, "BEGIN %s after_t: %u (stop_at_t: %ld), before_t: %u (start_at_t: %ld), start_t(now): %u, current_entry: %ld, entries: %ld"
1599 r->update_every = group * st->update_every;
1603 //info("RRD2RRDR(): %s: STARTING", st->id);
1605 long slot = start_at_slot, counter = 0, stop_now = 0, added = 0, group_count = 0, add_this = 0;
1606 for(; !stop_now ; now -= dt, slot--, counter++) {
1607 if(unlikely(slot < 0)) slot = st->entries - 1;
1608 if(unlikely(slot == stop_at_slot)) stop_now = counter;
1610 if(unlikely(debug)) debug(D_RRD_STATS, "ROW %s slot: %ld, entries_counter: %ld, group_count: %ld, added: %ld, now: %ld, %s %s"
1617 , (group_count + 1 == group)?"PRINT":" - "
1618 , (now >= after && now <= before)?"RANGE":" - "
1621 // make sure we return data in the proper time range
1622 if(unlikely(now > before)) continue;
1623 if(unlikely(now < after)) break;
1625 if(unlikely(group_count == 0)) {
1626 group_start_t = now;
1630 if(unlikely(group_count == group)) {
1631 if(unlikely(added >= points)) break;
1635 // do the calculations
1636 for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
1637 storage_number n = rd->values[slot];
1638 if(unlikely(!does_storage_number_exist(n))) continue;
1642 calculated_number value = unpack_storage_number(n);
1643 if(likely(value != 0.0)) {
1644 group_options[c] |= RRDR_NONZERO;
1645 found_non_zero[c] = 1;
1648 if(unlikely(did_storage_number_reset(n)))
1649 group_options[c] |= RRDR_RESET;
1651 switch(group_method) {
1653 if(unlikely(isnan(group_values[c])) ||
1654 fabsl(value) < fabsl(group_values[c]))
1655 group_values[c] = value;
1659 if(unlikely(isnan(group_values[c])) ||
1660 fabsl(value) > fabsl(group_values[c]))
1661 group_values[c] = value;
1667 case GROUP_UNDEFINED:
1668 group_values[c] += value;
1671 case GROUP_INCREMENTAL_SUM:
1672 if(unlikely(slot == start_at_slot))
1673 last_values[c] = value;
1675 group_values[c] += last_values[c] - value;
1676 last_values[c] = value;
1682 if(unlikely(add_this)) {
1683 if(unlikely(!rrdr_line_init(r, group_start_t))) break;
1687 calculated_number *cn = rrdr_line_values(r);
1688 uint8_t *co = rrdr_line_options(r);
1690 for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
1692 // update the dimension options
1693 if(likely(found_non_zero[c])) r->od[c] |= RRDR_NONZERO;
1695 // store the specific point options
1696 co[c] = group_options[c];
1699 if(unlikely(group_counts[c] == 0)) {
1701 co[c] |= RRDR_EMPTY;
1702 group_values[c] = (group_method == GROUP_MAX || group_method == GROUP_MIN)?NAN:0;
1705 switch(group_method) {
1708 if(unlikely(isnan(group_values[c])))
1711 cn[c] = group_values[c];
1712 group_values[c] = NAN;
1717 case GROUP_INCREMENTAL_SUM:
1718 cn[c] = group_values[c];
1719 group_values[c] = 0;
1724 case GROUP_UNDEFINED:
1725 cn[c] = group_values[c] / group_counts[c];
1726 group_values[c] = 0;
1730 if(cn[c] < r->min) r->min = cn[c];
1731 if(cn[c] > r->max) r->max = cn[c];
1734 // reset for the next loop
1735 group_counts[c] = 0;
1736 group_options[c] = 0;
1746 //info("RRD2RRDR(): %s: END %ld loops made, %ld points generated", st->id, counter, rrdr_rows(r));
1747 //error("SHIFT: %s: wanted %ld points, got %ld", st->id, points, rrdr_rows(r));
1751 int rrd2value(RRDSET *st, BUFFER *wb, calculated_number *n, const char *dimensions, long points, long long after, long long before, int group_method, uint32_t options, time_t *db_after, time_t *db_before, int *value_is_null)
1753 RRDR *r = rrd2rrdr(st, points, after, before, group_method, !(options & RRDR_OPTION_NOT_ALIGNED));
1755 if(value_is_null) *value_is_null = 1;
1759 if(rrdr_rows(r) == 0) {
1762 if(db_after) *db_after = 0;
1763 if(db_before) *db_before = 0;
1764 if(value_is_null) *value_is_null = 1;
1769 if(r->result_options & RRDR_RESULT_OPTION_RELATIVE)
1770 buffer_no_cacheable(wb);
1771 else if(r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
1772 buffer_cacheable(wb);
1774 options = rrdr_check_options(r, options, dimensions);
1777 rrdr_disable_not_selected_dimensions(r, dimensions);
1779 if(db_after) *db_after = r->after;
1780 if(db_before) *db_before = r->before;
1782 long i = (options & RRDR_OPTION_REVERSED)?rrdr_rows(r) - 1:0;
1783 *n = rrdr2value(r, i, options, value_is_null);
1789 int rrd2format(RRDSET *st, BUFFER *wb, BUFFER *dimensions, uint32_t format, long points, long long after, long long before, int group_method, uint32_t options, time_t *latest_timestamp)
1791 RRDR *r = rrd2rrdr(st, points, after, before, group_method, !(options & RRDR_OPTION_NOT_ALIGNED));
1793 buffer_strcat(wb, "Cannot generate output with these parameters on this chart.");
1797 if(r->result_options & RRDR_RESULT_OPTION_RELATIVE)
1798 buffer_no_cacheable(wb);
1799 else if(r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
1800 buffer_cacheable(wb);
1802 options = rrdr_check_options(r, options, (dimensions)?buffer_tostring(dimensions):NULL);
1805 rrdr_disable_not_selected_dimensions(r, buffer_tostring(dimensions));
1807 if(latest_timestamp && rrdr_rows(r) > 0)
1808 *latest_timestamp = r->before;
1811 case DATASOURCE_SSV:
1812 if(options & RRDR_OPTION_JSON_WRAP) {
1813 wb->contenttype = CT_APPLICATION_JSON;
1814 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1815 rrdr2ssv(r, wb, options, "", " ", "");
1816 rrdr_json_wrapper_end(r, wb, format, options, 1);
1819 wb->contenttype = CT_TEXT_PLAIN;
1820 rrdr2ssv(r, wb, options, "", " ", "");
1824 case DATASOURCE_SSV_COMMA:
1825 if(options & RRDR_OPTION_JSON_WRAP) {
1826 wb->contenttype = CT_APPLICATION_JSON;
1827 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1828 rrdr2ssv(r, wb, options, "", ",", "");
1829 rrdr_json_wrapper_end(r, wb, format, options, 1);
1832 wb->contenttype = CT_TEXT_PLAIN;
1833 rrdr2ssv(r, wb, options, "", ",", "");
1837 case DATASOURCE_JS_ARRAY:
1838 if(options & RRDR_OPTION_JSON_WRAP) {
1839 wb->contenttype = CT_APPLICATION_JSON;
1840 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1841 rrdr2ssv(r, wb, options, "[", ",", "]");
1842 rrdr_json_wrapper_end(r, wb, format, options, 0);
1845 wb->contenttype = CT_APPLICATION_JSON;
1846 rrdr2ssv(r, wb, options, "[", ",", "]");
1850 case DATASOURCE_CSV:
1851 if(options & RRDR_OPTION_JSON_WRAP) {
1852 wb->contenttype = CT_APPLICATION_JSON;
1853 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1854 rrdr2csv(r, wb, options, "", ",", "\\n", "");
1855 rrdr_json_wrapper_end(r, wb, format, options, 1);
1858 wb->contenttype = CT_TEXT_PLAIN;
1859 rrdr2csv(r, wb, options, "", ",", "\r\n", "");
1863 case DATASOURCE_CSV_JSON_ARRAY:
1864 wb->contenttype = CT_APPLICATION_JSON;
1865 if(options & RRDR_OPTION_JSON_WRAP) {
1866 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1867 buffer_strcat(wb, "[\n");
1868 rrdr2csv(r, wb, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
1869 buffer_strcat(wb, "\n]");
1870 rrdr_json_wrapper_end(r, wb, format, options, 0);
1873 wb->contenttype = CT_TEXT_PLAIN;
1874 buffer_strcat(wb, "[\n");
1875 rrdr2csv(r, wb, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
1876 buffer_strcat(wb, "\n]");
1880 case DATASOURCE_TSV:
1881 if(options & RRDR_OPTION_JSON_WRAP) {
1882 wb->contenttype = CT_APPLICATION_JSON;
1883 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1884 rrdr2csv(r, wb, options, "", "\t", "\\n", "");
1885 rrdr_json_wrapper_end(r, wb, format, options, 1);
1888 wb->contenttype = CT_TEXT_PLAIN;
1889 rrdr2csv(r, wb, options, "", "\t", "\r\n", "");
1893 case DATASOURCE_HTML:
1894 if(options & RRDR_OPTION_JSON_WRAP) {
1895 wb->contenttype = CT_APPLICATION_JSON;
1896 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1897 buffer_strcat(wb, "<html>\\n<center>\\n<table border=\\\"0\\\" cellpadding=\\\"5\\\" cellspacing=\\\"5\\\">\\n");
1898 rrdr2csv(r, wb, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "");
1899 buffer_strcat(wb, "</table>\\n</center>\\n</html>\\n");
1900 rrdr_json_wrapper_end(r, wb, format, options, 1);
1903 wb->contenttype = CT_TEXT_HTML;
1904 buffer_strcat(wb, "<html>\n<center>\n<table border=\"0\" cellpadding=\"5\" cellspacing=\"5\">\n");
1905 rrdr2csv(r, wb, options, "<tr><td>", "</td><td>", "</td></tr>\n", "");
1906 buffer_strcat(wb, "</table>\n</center>\n</html>\n");
1910 case DATASOURCE_DATATABLE_JSONP:
1911 wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
1913 if(options & RRDR_OPTION_JSON_WRAP)
1914 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1916 rrdr2json(r, wb, options, 1);
1918 if(options & RRDR_OPTION_JSON_WRAP)
1919 rrdr_json_wrapper_end(r, wb, format, options, 0);
1922 case DATASOURCE_DATATABLE_JSON:
1923 wb->contenttype = CT_APPLICATION_JSON;
1925 if(options & RRDR_OPTION_JSON_WRAP)
1926 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1928 rrdr2json(r, wb, options, 1);
1930 if(options & RRDR_OPTION_JSON_WRAP)
1931 rrdr_json_wrapper_end(r, wb, format, options, 0);
1934 case DATASOURCE_JSONP:
1935 wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
1936 if(options & RRDR_OPTION_JSON_WRAP)
1937 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1939 rrdr2json(r, wb, options, 0);
1941 if(options & RRDR_OPTION_JSON_WRAP)
1942 rrdr_json_wrapper_end(r, wb, format, options, 0);
1945 case DATASOURCE_JSON:
1947 wb->contenttype = CT_APPLICATION_JSON;
1949 if(options & RRDR_OPTION_JSON_WRAP)
1950 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1952 rrdr2json(r, wb, options, 0);
1954 if(options & RRDR_OPTION_JSON_WRAP)
1955 rrdr_json_wrapper_end(r, wb, format, options, 0);
1963 time_t rrd_stats_json(int type, RRDSET *st, BUFFER *wb, long points, long group, int group_method, time_t after, time_t before, int only_non_zero)
1966 pthread_rwlock_rdlock(&st->rwlock);
1969 // -------------------------------------------------------------------------
1970 // switch from JSON to google JSON
1975 case DATASOURCE_DATATABLE_JSON:
1976 case DATASOURCE_DATATABLE_JSONP:
1981 case DATASOURCE_JSON:
1987 // -------------------------------------------------------------------------
1988 // validate the parameters
1990 if(points < 1) points = 1;
1991 if(group < 1) group = 1;
1993 if(before == 0 || before > rrdset_last_entry_t(st)) before = rrdset_last_entry_t(st);
1994 if(after == 0 || after < rrdset_first_entry_t(st)) after = rrdset_first_entry_t(st);
1998 // our return value (the last timestamp printed)
1999 // this is required to detect re-transmit in google JSONP
2000 time_t last_timestamp = 0;
2003 // -------------------------------------------------------------------------
2004 // find how many dimensions we have
2008 for( rd = st->dimensions ; rd ; rd = rd->next) dimensions++;
2010 pthread_rwlock_unlock(&st->rwlock);
2011 buffer_strcat(wb, "No dimensions yet.");
2016 // -------------------------------------------------------------------------
2017 // prepare various strings, to speed up the loop
2019 char overflow_annotation[201]; snprintfz(overflow_annotation, 200, ",{%sv%s:%sRESET OR OVERFLOW%s},{%sv%s:%sThe counters have been wrapped.%s}", kq, kq, sq, sq, kq, kq, sq, sq);
2020 char normal_annotation[201]; snprintfz(normal_annotation, 200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
2021 char pre_date[51]; snprintfz(pre_date, 50, " {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
2022 char post_date[21]; snprintfz(post_date, 20, "%s}", sq);
2023 char pre_value[21]; snprintfz(pre_value, 20, ",{%sv%s:", kq, kq);
2024 char post_value[21]; strcpy(post_value, "}");
2027 // -------------------------------------------------------------------------
2028 // checks for debugging
2031 debug(D_RRD_STATS, "%s first_entry_t = %ld, last_entry_t = %ld, duration = %ld, after = %ld, before = %ld, duration = %ld, entries_to_show = %ld, group = %ld"
2033 , rrdset_first_entry_t(st)
2034 , rrdset_last_entry_t(st)
2035 , rrdset_last_entry_t(st) - rrdset_first_entry_t(st)
2044 debug(D_RRD_STATS, "WARNING: %s The newest value in the database (%ld) is earlier than the oldest (%ld)", st->name, before, after);
2046 if((before - after) > st->entries * st->update_every)
2047 debug(D_RRD_STATS, "WARNING: %s The time difference between the oldest and the newest entries (%ld) is higher than the capacity of the database (%ld)", st->name, before - after, st->entries * st->update_every);
2051 // -------------------------------------------------------------------------
2052 // temp arrays for keeping values per dimension
2054 calculated_number group_values[dimensions]; // keep sums when grouping
2055 int print_hidden[dimensions]; // keep hidden flags
2056 int found_non_zero[dimensions];
2057 int found_non_existing[dimensions];
2060 for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
2061 group_values[c] = 0;
2062 print_hidden[c] = (rd->flags & RRDDIM_FLAG_HIDDEN)?1:0;
2063 found_non_zero[c] = 0;
2064 found_non_existing[c] = 0;
2068 // error("OLD: points=%d after=%d before=%d group=%d, duration=%d", entries_to_show, before - (st->update_every * group * entries_to_show), before, group, before - after + 1);
2069 // rrd2array(st, entries_to_show, before - (st->update_every * group * entries_to_show), before, group_method, only_non_zero);
2070 // rrd2rrdr(st, entries_to_show, before - (st->update_every * group * entries_to_show), before, group_method);
2072 // -------------------------------------------------------------------------
2073 // remove dimensions that contain only zeros
2076 if(only_non_zero) max_loop = 2;
2078 for(; max_loop ; max_loop--) {
2080 // -------------------------------------------------------------------------
2081 // print the JSON header
2083 buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
2084 buffer_sprintf(wb, " {%sid%s:%s%s,%slabel%s:%stime%s,%spattern%s:%s%s,%stype%s:%sdatetime%s},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq);
2085 buffer_sprintf(wb, " {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotation%s}},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
2086 buffer_sprintf(wb, " {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotationText%s}}", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
2088 // print the header for each dimension
2089 // and update the print_hidden array for the dimensions that should be hidden
2091 for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
2092 if(!print_hidden[c]) {
2094 buffer_sprintf(wb, ",\n {%sid%s:%s%s,%slabel%s:%s%s%s,%spattern%s:%s%s,%stype%s:%snumber%s}", kq, kq, sq, sq, kq, kq, sq, rd->name, sq, kq, kq, sq, sq, kq, kq, sq, sq);
2098 buffer_sprintf(wb, ",\n {%sid%s:%s%s,%slabel%s:%s%s%s,%spattern%s:%s%s,%stype%s:%snumber%s}", kq, kq, sq, sq, kq, kq, sq, "no data", sq, kq, kq, sq, sq, kq, kq, sq, sq);
2101 // print the begin of row data
2102 buffer_sprintf(wb, "\n ],\n %srows%s:\n [\n", kq, kq);
2105 // -------------------------------------------------------------------------
2108 int annotate_reset = 0;
2109 int annotation_count = 0;
2111 long t = rrdset_time2slot(st, before),
2112 stop_at_t = rrdset_time2slot(st, after),
2117 time_t now = rrdset_slot2time(st, t),
2118 dt = st->update_every;
2120 long count = 0, printed = 0, group_count = 0;
2123 if(st->debug) debug(D_RRD_STATS, "%s: REQUEST after:%u before:%u, points:%ld, group:%ld, CHART cur:%ld first: %u last:%u, CALC start_t:%ld, stop_t:%ld"
2130 , (uint32_t)rrdset_first_entry_t(st)
2131 , (uint32_t)rrdset_last_entry_t(st)
2137 for(; !stop_now ; now -= dt, t--, counter++) {
2138 if(t < 0) t = st->entries - 1;
2139 if(t == stop_at_t) stop_now = counter;
2143 if(st->debug) debug(D_RRD_STATS, "%s t = %ld, count = %ld, group_count = %ld, printed = %ld, now = %ld, %s %s"
2150 , (group_count + 1 == group)?"PRINT":" - "
2151 , (now >= after && now <= before)?"RANGE":" - "
2155 // make sure we return data in the proper time range
2156 if(now > before) continue;
2157 if(now < after) break;
2159 //if(rrdset_slot2time(st, t) != now)
2160 // error("%s: slot=%ld, now=%ld, slot2time=%ld, diff=%ld, last_entry_t=%ld, rrdset_last_slot=%ld", st->id, t, now, rrdset_slot2time(st,t), now - rrdset_slot2time(st,t), rrdset_last_entry_t(st), rrdset_last_slot(st));
2165 // check if we have to print this now
2166 if(group_count == group) {
2167 if(printed >= points) {
2168 // debug(D_RRD_STATS, "Already printed all rows. Stopping.");
2172 // generate the local date time
2173 struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
2174 if(!tm) { error("localtime() failed."); continue; }
2175 if(now > last_timestamp) last_timestamp = now;
2177 if(printed) buffer_strcat(wb, "]},\n");
2178 buffer_strcat(wb, pre_date);
2179 buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
2180 buffer_strcat(wb, post_date);
2185 // do the calculations
2186 for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
2187 storage_number n = rd->values[t];
2188 calculated_number value = unpack_storage_number(n);
2190 if(!does_storage_number_exist(n)) {
2192 found_non_existing[c]++;
2194 if(did_storage_number_reset(n)) annotate_reset = 1;
2196 switch(group_method) {
2198 if(abs(value) > abs(group_values[c])) group_values[c] = value;
2202 group_values[c] += value;
2207 group_values[c] += value;
2208 if(print_this) group_values[c] /= ( group_count - found_non_existing[c] );
2214 if(annotate_reset) {
2216 buffer_strcat(wb, overflow_annotation);
2220 buffer_strcat(wb, normal_annotation);
2223 for(c = 0 ; c < dimensions ; c++) {
2224 if(found_non_existing[c] == group_count) {
2225 // all entries are non-existing
2227 buffer_strcat(wb, pre_value);
2228 buffer_strcat(wb, "null");
2229 buffer_strcat(wb, post_value);
2231 else if(!print_hidden[c]) {
2233 buffer_strcat(wb, pre_value);
2234 buffer_rrd_value(wb, group_values[c]);
2235 buffer_strcat(wb, post_value);
2237 if(group_values[c]) found_non_zero[c]++;
2240 // reset them for the next loop
2241 group_values[c] = 0;
2242 found_non_existing[c] = 0;
2245 // if all dimensions are hidden, print a null
2247 buffer_strcat(wb, pre_value);
2248 buffer_strcat(wb, "null");
2249 buffer_strcat(wb, post_value);
2257 if(printed) buffer_strcat(wb, "]}");
2258 buffer_strcat(wb, "\n ]\n}\n");
2260 if(only_non_zero && max_loop > 1) {
2262 for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
2263 group_values[c] = 0;
2264 found_non_existing[c] = 0;
2266 if(!print_hidden[c] && !found_non_zero[c]) {
2268 print_hidden[c] = 1;
2272 if(changed) buffer_flush(wb);
2279 debug(D_RRD_STATS, "RRD_STATS_JSON: %s total %lu bytes", st->name, wb->len);
2281 pthread_rwlock_unlock(&st->rwlock);
2282 return last_timestamp;