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\""
89 ",\n\t\"update_every\": %d"
90 ",\n\t\"history\": %d"
95 , rrd_default_history_entries
98 pthread_rwlock_rdlock(&localhost.rrdset_root_rwlock);
99 for(st = localhost.rrdset_root, c = 0; st ; st = st->next) {
100 if(st->enabled && st->dimensions) {
101 if(c) buffer_strcat(wb, ",");
102 buffer_strcat(wb, "\n\t\t\"");
103 buffer_strcat(wb, st->id);
104 buffer_strcat(wb, "\": ");
105 rrd_stats_api_v1_chart_with_data(st, wb, &dimensions, &memory);
111 for(rc = localhost.alarms; rc ; rc = rc->next) {
115 pthread_rwlock_unlock(&localhost.rrdset_root_rwlock);
117 buffer_sprintf(wb, "\n\t}"
118 ",\n\t\"charts_count\": %zu"
119 ",\n\t\"dimensions_count\": %zu"
120 ",\n\t\"alarms_count\": %zu"
121 ",\n\t\"rrd_memory_bytes\": %zu"
130 // ----------------------------------------------------------------------------
132 // /api/v1/allmetrics?format=prometheus
134 static inline size_t prometheus_name_copy(char *d, const char *s, size_t usable) {
137 for(n = 0; *s && n < usable ; d++, s++, n++) {
138 register char c = *s;
140 if(unlikely(!isalnum(c))) *d = '_';
148 #define PROMETHEUS_ELEMENT_MAX 256
150 void rrd_stats_api_v1_charts_allmetrics_prometheus(BUFFER *wb)
152 pthread_rwlock_rdlock(&localhost.rrdset_root_rwlock);
154 char host[PROMETHEUS_ELEMENT_MAX + 1];
155 prometheus_name_copy(host, config_get("global", "hostname", "localhost"), PROMETHEUS_ELEMENT_MAX);
159 for(st = localhost.rrdset_root; st ; st = st->next) {
160 char chart[PROMETHEUS_ELEMENT_MAX + 1];
161 prometheus_name_copy(chart, st->id, PROMETHEUS_ELEMENT_MAX);
163 buffer_strcat(wb, "\n");
164 if(st->enabled && st->dimensions) {
165 pthread_rwlock_rdlock(&st->rwlock);
167 // for each dimension
169 for(rd = st->dimensions; rd ; rd = rd->next) {
171 char dimension[PROMETHEUS_ELEMENT_MAX + 1];
172 prometheus_name_copy(dimension, rd->id, PROMETHEUS_ELEMENT_MAX);
174 // buffer_sprintf(wb, "# HELP %s.%s %s\n", st->id, rd->id, st->units);
176 switch(rd->algorithm) {
177 case RRDDIM_INCREMENTAL:
178 case RRDDIM_PCENT_OVER_DIFF_TOTAL:
179 buffer_sprintf(wb, "# TYPE %s_%s counter\n", chart, dimension);
183 buffer_sprintf(wb, "# TYPE %s_%s gauge\n", chart, dimension);
187 // calculated_number n = (calculated_number)rd->last_collected_value * (calculated_number)(abs(rd->multiplier)) / (calculated_number)(abs(rd->divisor));
188 // buffer_sprintf(wb, "%s.%s " CALCULATED_NUMBER_FORMAT " %llu\n", st->id, rd->id, n,
189 // (unsigned long long)((rd->last_collected_time.tv_sec * 1000) + (rd->last_collected_time.tv_usec / 1000)));
191 buffer_sprintf(wb, "%s_%s{instance=\"%s\"} " COLLECTED_NUMBER_FORMAT " %llu\n",
192 chart, dimension, host, rd->last_collected_value,
193 (unsigned long long)((rd->last_collected_time.tv_sec * 1000) + (rd->last_collected_time.tv_usec / 1000)));
198 pthread_rwlock_unlock(&st->rwlock);
202 pthread_rwlock_unlock(&localhost.rrdset_root_rwlock);
205 // ----------------------------------------------------------------------------
207 // /api/v1/allmetrics?format=bash
209 static inline size_t shell_name_copy(char *d, const char *s, size_t usable) {
212 for(n = 0; *s && n < usable ; d++, s++, n++) {
213 register char c = *s;
215 if(unlikely(!isalnum(c))) *d = '_';
216 else *d = (char)toupper(c);
223 #define SHELL_ELEMENT_MAX 100
225 void rrd_stats_api_v1_charts_allmetrics_shell(BUFFER *wb)
227 pthread_rwlock_rdlock(&localhost.rrdset_root_rwlock);
229 char host[SHELL_ELEMENT_MAX + 1];
230 shell_name_copy(host, config_get("global", "hostname", "localhost"), SHELL_ELEMENT_MAX);
234 for(st = localhost.rrdset_root; st ; st = st->next) {
235 calculated_number total = 0.0;
236 char chart[SHELL_ELEMENT_MAX + 1];
237 shell_name_copy(chart, st->id, SHELL_ELEMENT_MAX);
239 buffer_sprintf(wb, "\n# chart: %s (name: %s)\n", st->id, st->name);
240 if(st->enabled && st->dimensions) {
241 pthread_rwlock_rdlock(&st->rwlock);
243 // for each dimension
245 for(rd = st->dimensions; rd ; rd = rd->next) {
247 char dimension[SHELL_ELEMENT_MAX + 1];
248 shell_name_copy(dimension, rd->id, SHELL_ELEMENT_MAX);
250 calculated_number n = rd->last_stored_value;
252 if(isnan(n) || isinf(n))
253 buffer_sprintf(wb, "NETDATA_%s_%s=\"\" # %s\n", chart, dimension, st->units);
255 if(rd->multiplier < 0 || rd->divisor < 0) n = -n;
257 if(!(rd->flags & RRDDIM_FLAG_HIDDEN)) total += n;
258 buffer_sprintf(wb, "NETDATA_%s_%s=\"%0.0Lf\" # %s\n", chart, dimension, n, st->units);
263 total = roundl(total);
264 buffer_sprintf(wb, "NETDATA_%s_VISIBLETOTAL=\"%0.0Lf\" # %s\n", chart, total, st->units);
265 pthread_rwlock_unlock(&st->rwlock);
269 buffer_strcat(wb, "\n# NETDATA ALARMS RUNNING\n");
272 for(rc = localhost.alarms; rc ;rc = rc->next) {
273 if(!rc->rrdset) continue;
275 char chart[SHELL_ELEMENT_MAX + 1];
276 shell_name_copy(chart, rc->rrdset->id, SHELL_ELEMENT_MAX);
278 char alarm[SHELL_ELEMENT_MAX + 1];
279 shell_name_copy(alarm, rc->name, SHELL_ELEMENT_MAX);
281 calculated_number n = rc->value;
283 if(isnan(n) || isinf(n))
284 buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"\" # %s\n", chart, alarm, rc->units);
287 buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"%0.0Lf\" # %s\n", chart, alarm, n, rc->units);
290 buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_STATUS=\"%s\"\n", chart, alarm, rrdcalc_status2string(rc->status));
293 pthread_rwlock_unlock(&localhost.rrdset_root_rwlock);
296 // ----------------------------------------------------------------------------
298 unsigned long rrd_stats_one_json(RRDSET *st, char *options, BUFFER *wb)
300 time_t now = now_realtime_sec();
302 pthread_rwlock_rdlock(&st->rwlock);
306 "\t\t\t\"id\": \"%s\",\n"
307 "\t\t\t\"name\": \"%s\",\n"
308 "\t\t\t\"type\": \"%s\",\n"
309 "\t\t\t\"family\": \"%s\",\n"
310 "\t\t\t\"context\": \"%s\",\n"
311 "\t\t\t\"title\": \"%s\",\n"
312 "\t\t\t\"priority\": %ld,\n"
313 "\t\t\t\"enabled\": %d,\n"
314 "\t\t\t\"units\": \"%s\",\n"
315 "\t\t\t\"url\": \"/data/%s/%s\",\n"
316 "\t\t\t\"chart_type\": \"%s\",\n"
317 "\t\t\t\"counter\": %lu,\n"
318 "\t\t\t\"entries\": %ld,\n"
319 "\t\t\t\"first_entry_t\": %ld,\n"
320 "\t\t\t\"last_entry\": %lu,\n"
321 "\t\t\t\"last_entry_t\": %ld,\n"
322 "\t\t\t\"last_entry_secs_ago\": %ld,\n"
323 "\t\t\t\"update_every\": %d,\n"
324 "\t\t\t\"isdetail\": %d,\n"
325 "\t\t\t\"usec_since_last_update\": %llu,\n"
326 "\t\t\t\"collected_total\": " TOTAL_NUMBER_FORMAT ",\n"
327 "\t\t\t\"last_collected_total\": " TOTAL_NUMBER_FORMAT ",\n"
328 "\t\t\t\"dimensions\": [\n"
338 , st->name, options?options:""
339 , rrdset_type_name(st->chart_type)
342 , rrdset_first_entry_t(st)
343 , rrdset_last_slot(st)
344 , rrdset_last_entry_t(st)
345 , (now < rrdset_last_entry_t(st)) ? (time_t)0 : now - rrdset_last_entry_t(st)
348 , st->usec_since_last_update
349 , st->collected_total
350 , st->last_collected_total
353 unsigned long memory = st->memsize;
356 for(rd = st->dimensions; rd ; rd = rd->next) {
358 memory += rd->memsize;
362 "\t\t\t\t\t\"id\": \"%s\",\n"
363 "\t\t\t\t\t\"name\": \"%s\",\n"
364 "\t\t\t\t\t\"entries\": %ld,\n"
365 "\t\t\t\t\t\"isHidden\": %d,\n"
366 "\t\t\t\t\t\"algorithm\": \"%s\",\n"
367 "\t\t\t\t\t\"multiplier\": %ld,\n"
368 "\t\t\t\t\t\"divisor\": %ld,\n"
369 "\t\t\t\t\t\"last_entry_t\": %ld,\n"
370 "\t\t\t\t\t\"collected_value\": " COLLECTED_NUMBER_FORMAT ",\n"
371 "\t\t\t\t\t\"calculated_value\": " CALCULATED_NUMBER_FORMAT ",\n"
372 "\t\t\t\t\t\"last_collected_value\": " COLLECTED_NUMBER_FORMAT ",\n"
373 "\t\t\t\t\t\"last_calculated_value\": " CALCULATED_NUMBER_FORMAT ",\n"
374 "\t\t\t\t\t\"memory\": %lu\n"
379 , (rd->flags & RRDDIM_FLAG_HIDDEN)?1:0
380 , rrddim_algorithm_name(rd->algorithm)
383 , rd->last_collected_time.tv_sec
384 , rd->collected_value
385 , rd->calculated_value
386 , rd->last_collected_value
387 , rd->last_calculated_value
395 "\t\t\t\"memory\" : %lu\n"
400 pthread_rwlock_unlock(&st->rwlock);
404 #define RRD_GRAPH_JSON_HEADER "{\n\t\"charts\": [\n"
405 #define RRD_GRAPH_JSON_FOOTER "\n\t]\n}\n"
407 void rrd_stats_graph_json(RRDSET *st, char *options, BUFFER *wb)
409 buffer_strcat(wb, RRD_GRAPH_JSON_HEADER);
410 rrd_stats_one_json(st, options, wb);
411 buffer_strcat(wb, RRD_GRAPH_JSON_FOOTER);
414 void rrd_stats_all_json(BUFFER *wb)
416 unsigned long memory = 0;
420 buffer_strcat(wb, RRD_GRAPH_JSON_HEADER);
422 pthread_rwlock_rdlock(&localhost.rrdset_root_rwlock);
423 for(st = localhost.rrdset_root, c = 0; st ; st = st->next) {
424 if(st->enabled && st->dimensions) {
425 if(c) buffer_strcat(wb, ",\n");
426 memory += rrd_stats_one_json(st, NULL, wb);
430 pthread_rwlock_unlock(&localhost.rrdset_root_rwlock);
432 buffer_sprintf(wb, "\n\t],\n"
433 "\t\"hostname\": \"%s\",\n"
434 "\t\"update_every\": %d,\n"
435 "\t\"history\": %d,\n"
436 "\t\"memory\": %lu\n"
440 , rrd_default_history_entries
447 // ----------------------------------------------------------------------------
449 // RRDR dimension options
450 #define RRDR_EMPTY 0x01 // the dimension contains / the value is empty (null)
451 #define RRDR_RESET 0x02 // the dimension contains / the value is reset
452 #define RRDR_HIDDEN 0x04 // the dimension contains / the value is hidden
453 #define RRDR_NONZERO 0x08 // the dimension contains / the value is non-zero
454 #define RRDR_SELECTED 0x10 // the dimension is selected
456 // RRDR result options
457 #define RRDR_RESULT_OPTION_ABSOLUTE 0x00000001
458 #define RRDR_RESULT_OPTION_RELATIVE 0x00000002
460 typedef struct rrdresult {
461 RRDSET *st; // the chart this result refers to
463 uint32_t result_options; // RRDR_RESULT_OPTION_*
465 int d; // the number of dimensions
466 long n; // the number of values in the arrays
467 long rows; // the number of rows used
469 uint8_t *od; // the options for the dimensions
471 time_t *t; // array of n timestamps
472 calculated_number *v; // array n x d values
473 uint8_t *o; // array n x d options
475 long c; // current line ( -1 ~ n ), ( -1 = none, use rrdr_rows() to get number of rows )
477 long group; // how many collected values were grouped for each row
478 int update_every; // what is the suggested update frequency in seconds
480 calculated_number min;
481 calculated_number max;
486 int has_st_lock; // if st is read locked by us
489 #define rrdr_rows(r) ((r)->rows)
492 static void rrdr_dump(RRDR *r)
497 fprintf(stderr, "\nCHART %s (%s)\n", r->st->id, r->st->name);
499 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
500 fprintf(stderr, "DIMENSION %s (%s), %s%s%s%s\n"
503 , (r->od[c] & RRDR_EMPTY)?"EMPTY ":""
504 , (r->od[c] & RRDR_RESET)?"RESET ":""
505 , (r->od[c] & RRDR_HIDDEN)?"HIDDEN ":""
506 , (r->od[c] & RRDR_NONZERO)?"NONZERO ":""
511 fprintf(stderr, "RRDR does not have any values in it.\n");
515 fprintf(stderr, "RRDR includes %d values in it:\n", r->rows);
517 // for each line in the array
518 for(i = 0; i < r->rows ;i++) {
519 calculated_number *cn = &r->v[ i * r->d ];
520 uint8_t *co = &r->o[ i * r->d ];
522 // print the id and the timestamp of the line
523 fprintf(stderr, "%ld %ld ", i + 1, r->t[i]);
525 // for each dimension
526 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
527 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
528 if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
530 if(co[c] & RRDR_EMPTY)
531 fprintf(stderr, "null ");
533 fprintf(stderr, CALCULATED_NUMBER_FORMAT " %s%s%s%s "
535 , (co[c] & RRDR_EMPTY)?"E":" "
536 , (co[c] & RRDR_RESET)?"R":" "
537 , (co[c] & RRDR_HIDDEN)?"H":" "
538 , (co[c] & RRDR_NONZERO)?"N":" "
542 fprintf(stderr, "\n");
547 void rrdr_disable_not_selected_dimensions(RRDR *r, uint32_t options, const char *dims)
549 if(unlikely(!dims || !*dims)) return;
551 char b[strlen(dims) + 1];
555 long c, dims_selected = 0, dims_not_hidden_not_zero = 0;
558 // disable all of them
559 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next)
560 r->od[c] |= RRDR_HIDDEN;
562 while(o && *o && (tok = mystrsep(&o, ",|"))) {
565 uint32_t hash = simple_hash(tok);
567 // find it and enable it
568 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
569 if(unlikely((hash == d->hash && !strcmp(d->id, tok)) || !strcmp(d->name, tok))) {
571 if(likely(r->od[c] & RRDR_HIDDEN)) {
572 r->od[c] |= RRDR_SELECTED;
573 r->od[c] &= ~RRDR_HIDDEN;
577 // since the user needs this dimension
578 // make it appear as NONZERO, to return it
579 // even if the dimension has only zeros
580 // unless option non_zero is set
581 if(likely(!(options & RRDR_OPTION_NONZERO)))
582 r->od[c] |= RRDR_NONZERO;
584 // count the visible dimensions
585 if(likely(r->od[c] & RRDR_NONZERO))
586 dims_not_hidden_not_zero++;
591 // check if all dimensions are hidden
592 if(unlikely(!dims_not_hidden_not_zero && dims_selected)) {
593 // there are a few selected dimensions
594 // but they are all zero
595 // enable the selected ones
596 // to avoid returning an empty chart
597 for(c = 0, d = r->st->dimensions; d ;c++, d = d->next)
598 if(unlikely(r->od[c] & RRDR_SELECTED))
599 r->od[c] |= RRDR_NONZERO;
603 void rrdr_buffer_print_format(BUFFER *wb, uint32_t format)
606 case DATASOURCE_JSON:
607 buffer_strcat(wb, DATASOURCE_FORMAT_JSON);
610 case DATASOURCE_DATATABLE_JSON:
611 buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSON);
614 case DATASOURCE_DATATABLE_JSONP:
615 buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSONP);
618 case DATASOURCE_JSONP:
619 buffer_strcat(wb, DATASOURCE_FORMAT_JSONP);
623 buffer_strcat(wb, DATASOURCE_FORMAT_SSV);
627 buffer_strcat(wb, DATASOURCE_FORMAT_CSV);
631 buffer_strcat(wb, DATASOURCE_FORMAT_TSV);
634 case DATASOURCE_HTML:
635 buffer_strcat(wb, DATASOURCE_FORMAT_HTML);
638 case DATASOURCE_JS_ARRAY:
639 buffer_strcat(wb, DATASOURCE_FORMAT_JS_ARRAY);
642 case DATASOURCE_SSV_COMMA:
643 buffer_strcat(wb, DATASOURCE_FORMAT_SSV_COMMA);
647 buffer_strcat(wb, "unknown");
652 uint32_t rrdr_check_options(RRDR *r, uint32_t options, const char *dims)
656 if(options & RRDR_OPTION_NONZERO) {
659 // commented due to #1514
661 //if(dims && *dims) {
662 // the caller wants specific dimensions
663 // disable NONZERO option
664 // to make sure we don't accidentally prevent
665 // the specific dimensions from being returned
669 // find how many dimensions are not zero
672 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ; c++, rd = rd->next) {
673 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
674 if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
679 // if with nonzero we get i = 0 (no dimensions will be returned)
680 // disable nonzero to show all dimensions
681 if(!i) options &= ~RRDR_OPTION_NONZERO;
687 void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
689 long rows = rrdr_rows(r);
693 //info("JSONWRAPPER(): %s: BEGIN", r->st->id);
694 char kq[2] = "", // key quote
695 sq[2] = ""; // string quote
697 if( options & RRDR_OPTION_GOOGLE_JSON ) {
706 buffer_sprintf(wb, "{\n"
709 " %sname%s: %s%s%s,\n"
710 " %sview_update_every%s: %d,\n"
711 " %supdate_every%s: %d,\n"
712 " %sfirst_entry%s: %u,\n"
713 " %slast_entry%s: %u,\n"
716 " %sdimension_names%s: ["
718 , kq, kq, sq, r->st->id, sq
719 , kq, kq, sq, r->st->name, sq
720 , kq, kq, r->update_every
721 , kq, kq, r->st->update_every
722 , kq, kq, (uint32_t)rrdset_first_entry_t(r->st)
723 , kq, kq, (uint32_t)rrdset_last_entry_t(r->st)
724 , kq, kq, (uint32_t)r->before
725 , kq, kq, (uint32_t)r->after
728 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
729 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
730 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
732 if(i) buffer_strcat(wb, ", ");
733 buffer_strcat(wb, sq);
734 buffer_strcat(wb, rd->name);
735 buffer_strcat(wb, sq);
739 #ifdef NETDATA_INTERNAL_CHECKS
740 error("RRDR is empty for %s (RRDR has %d dimensions, options is 0x%08x)", r->st->id, r->d, options);
743 buffer_strcat(wb, sq);
744 buffer_strcat(wb, "no data");
745 buffer_strcat(wb, sq);
748 buffer_sprintf(wb, "],\n"
749 " %sdimension_ids%s: ["
752 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
753 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
754 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
756 if(i) buffer_strcat(wb, ", ");
757 buffer_strcat(wb, sq);
758 buffer_strcat(wb, rd->id);
759 buffer_strcat(wb, sq);
764 buffer_strcat(wb, sq);
765 buffer_strcat(wb, "no data");
766 buffer_strcat(wb, sq);
769 buffer_sprintf(wb, "],\n"
770 " %slatest_values%s: ["
773 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
774 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
775 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
777 if(i) buffer_strcat(wb, ", ");
780 storage_number n = rd->values[rrdset_last_slot(r->st)];
782 if(!does_storage_number_exist(n))
783 buffer_strcat(wb, "null");
785 buffer_rrd_value(wb, unpack_storage_number(n));
789 buffer_strcat(wb, "null");
792 buffer_sprintf(wb, "],\n"
793 " %sview_latest_values%s: ["
798 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
799 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
800 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
802 if(i) buffer_strcat(wb, ", ");
805 calculated_number *cn = &r->v[ (0) * r->d ];
806 uint8_t *co = &r->o[ (0) * r->d ];
808 if(co[c] & RRDR_EMPTY)
809 buffer_strcat(wb, "null");
811 buffer_rrd_value(wb, cn[c]);
816 buffer_strcat(wb, "null");
819 buffer_sprintf(wb, "],\n"
820 " %sdimensions%s: %ld,\n"
821 " %spoints%s: %ld,\n"
828 rrdr_buffer_print_format(wb, format);
830 buffer_sprintf(wb, "%s,\n"
836 if(string_value) buffer_strcat(wb, sq);
837 //info("JSONWRAPPER(): %s: END", r->st->id);
840 void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
844 char kq[2] = "", // key quote
845 sq[2] = ""; // string quote
847 if( options & RRDR_OPTION_GOOGLE_JSON ) {
856 if(string_value) buffer_strcat(wb, sq);
858 buffer_sprintf(wb, ",\n %smin%s: ", kq, kq);
859 buffer_rrd_value(wb, r->min);
860 buffer_sprintf(wb, ",\n %smax%s: ", kq, kq);
861 buffer_rrd_value(wb, r->max);
862 buffer_strcat(wb, "\n}\n");
865 #define JSON_DATES_JS 1
866 #define JSON_DATES_TIMESTAMP 2
868 static void rrdr2json(RRDR *r, BUFFER *wb, uint32_t options, int datatable)
870 //info("RRD2JSON(): %s: BEGIN", r->st->id);
871 int row_annotations = 0, dates, dates_with_new = 0;
872 char kq[2] = "", // key quote
873 sq[2] = "", // string quote
874 pre_label[101] = "", // before each label
875 post_label[101] = "", // after each label
876 pre_date[101] = "", // the beginning of line, to the date
877 post_date[101] = "", // closing the date
878 pre_value[101] = "", // before each value
879 post_value[101] = "", // after each value
880 post_line[101] = "", // at the end of each row
881 normal_annotation[201] = "", // default row annotation
882 overflow_annotation[201] = "", // overflow row annotation
883 data_begin[101] = "", // between labels and values
884 finish[101] = ""; // at the end of everything
887 dates = JSON_DATES_JS;
888 if( options & RRDR_OPTION_GOOGLE_JSON ) {
897 snprintfz(pre_date, 100, " {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
898 snprintfz(post_date, 100, "%s}", sq);
899 snprintfz(pre_label, 100, ",\n {%sid%s:%s%s,%slabel%s:%s", kq, kq, sq, sq, kq, kq, sq);
900 snprintfz(post_label, 100, "%s,%spattern%s:%s%s,%stype%s:%snumber%s}", sq, kq, kq, sq, sq, kq, kq, sq, sq);
901 snprintfz(pre_value, 100, ",{%sv%s:", kq, kq);
902 strcpy(post_value, "}");
903 strcpy(post_line, "]}");
904 snprintfz(data_begin, 100, "\n ],\n %srows%s:\n [\n", kq, kq);
905 strcpy(finish, "\n ]\n}");
907 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);
908 snprintfz(normal_annotation, 200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
910 buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
911 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);
912 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);
913 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);
915 // remove the valueobjects flag
916 // google wants its own keys
917 if(options & RRDR_OPTION_OBJECTSROWS)
918 options &= ~RRDR_OPTION_OBJECTSROWS;
923 if(options & RRDR_OPTION_GOOGLE_JSON) {
924 dates = JSON_DATES_JS;
928 dates = JSON_DATES_TIMESTAMP;
931 if( options & RRDR_OPTION_OBJECTSROWS )
932 strcpy(pre_date, " { ");
934 strcpy(pre_date, " [ ");
935 strcpy(pre_label, ", \"");
936 strcpy(post_label, "\"");
937 strcpy(pre_value, ", ");
938 if( options & RRDR_OPTION_OBJECTSROWS )
939 strcpy(post_line, "}");
941 strcpy(post_line, "]");
942 snprintfz(data_begin, 100, "],\n %sdata%s:\n [\n", kq, kq);
943 strcpy(finish, "\n ]\n}");
945 buffer_sprintf(wb, "{\n %slabels%s: [", kq, kq);
946 buffer_sprintf(wb, "%stime%s", sq, sq);
949 // -------------------------------------------------------------------------
950 // print the JSON header
955 // print the header lines
956 for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
957 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
958 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
960 buffer_strcat(wb, pre_label);
961 buffer_strcat(wb, rd->name);
962 buffer_strcat(wb, post_label);
966 buffer_strcat(wb, pre_label);
967 buffer_strcat(wb, "no data");
968 buffer_strcat(wb, post_label);
971 // print the begin of row data
972 buffer_strcat(wb, data_begin);
974 // if all dimensions are hidden, print a null
976 buffer_strcat(wb, finish);
980 long start = 0, end = rrdr_rows(r), step = 1;
981 if((options & RRDR_OPTION_REVERSED)) {
982 start = rrdr_rows(r) - 1;
987 // for each line in the array
988 calculated_number total = 1;
989 for(i = start; i != end ;i += step) {
990 calculated_number *cn = &r->v[ i * r->d ];
991 uint8_t *co = &r->o[ i * r->d ];
993 time_t now = r->t[i];
995 if(dates == JSON_DATES_JS) {
996 // generate the local date time
997 struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
998 if(!tm) { error("localtime_r() failed."); continue; }
1000 if(likely(i != start)) buffer_strcat(wb, ",\n");
1001 buffer_strcat(wb, pre_date);
1003 if( options & RRDR_OPTION_OBJECTSROWS )
1004 buffer_sprintf(wb, "%stime%s: ", kq, kq);
1007 buffer_strcat(wb, "new ");
1009 buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
1011 buffer_strcat(wb, post_date);
1013 if(row_annotations) {
1014 // google supports one annotation per row
1015 int annotation_found = 0;
1016 for(c = 0, rd = r->st->dimensions; rd ;c++, rd = rd->next) {
1017 if(co[c] & RRDR_RESET) {
1018 buffer_strcat(wb, overflow_annotation);
1019 annotation_found = 1;
1023 if(!annotation_found)
1024 buffer_strcat(wb, normal_annotation);
1028 // print the timestamp of the line
1029 if(likely(i != start)) buffer_strcat(wb, ",\n");
1030 buffer_strcat(wb, pre_date);
1032 if( options & RRDR_OPTION_OBJECTSROWS )
1033 buffer_sprintf(wb, "%stime%s: ", kq, kq);
1035 buffer_rrd_value(wb, (calculated_number)r->t[i]);
1037 if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
1039 buffer_strcat(wb, post_date);
1042 if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
1044 for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
1045 calculated_number n = cn[c];
1047 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1052 // prevent a division by zero
1053 if(total == 0) total = 1;
1056 // for each dimension
1057 for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
1058 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
1059 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
1061 calculated_number n = cn[c];
1063 buffer_strcat(wb, pre_value);
1065 if( options & RRDR_OPTION_OBJECTSROWS )
1066 buffer_sprintf(wb, "%s%s%s: ", kq, rd->name, kq);
1068 if(co[c] & RRDR_EMPTY) {
1069 if(options & RRDR_OPTION_NULL2ZERO)
1070 buffer_strcat(wb, "0");
1072 buffer_strcat(wb, "null");
1075 if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1078 if(unlikely(options & RRDR_OPTION_PERCENTAGE))
1079 n = n * 100 / total;
1081 buffer_rrd_value(wb, n);
1084 buffer_strcat(wb, post_value);
1087 buffer_strcat(wb, post_line);
1090 buffer_strcat(wb, finish);
1091 //info("RRD2JSON(): %s: END", r->st->id);
1094 static void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t options, const char *startline, const char *separator, const char *endline, const char *betweenlines)
1096 //info("RRD2CSV(): %s: BEGIN", r->st->id);
1100 // print the csv header
1101 for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1102 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
1103 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
1106 buffer_strcat(wb, startline);
1107 if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
1108 buffer_strcat(wb, "time");
1109 if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
1111 buffer_strcat(wb, separator);
1112 if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
1113 buffer_strcat(wb, d->name);
1114 if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
1117 buffer_strcat(wb, endline);
1120 // no dimensions present
1124 long start = 0, end = rrdr_rows(r), step = 1;
1125 if((options & RRDR_OPTION_REVERSED)) {
1126 start = rrdr_rows(r) - 1;
1131 // for each line in the array
1132 calculated_number total = 1;
1133 for(i = start; i != end ;i += step) {
1134 calculated_number *cn = &r->v[ i * r->d ];
1135 uint8_t *co = &r->o[ i * r->d ];
1137 buffer_strcat(wb, betweenlines);
1138 buffer_strcat(wb, startline);
1140 time_t now = r->t[i];
1142 if((options & RRDR_OPTION_SECONDS) || (options & RRDR_OPTION_MILLISECONDS)) {
1143 // print the timestamp of the line
1144 buffer_rrd_value(wb, (calculated_number)now);
1146 if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
1149 // generate the local date time
1150 struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
1151 if(!tm) { error("localtime() failed."); continue; }
1152 buffer_date(wb, tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
1155 if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
1157 for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1158 calculated_number n = cn[c];
1160 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1165 // prevent a division by zero
1166 if(total == 0) total = 1;
1169 // for each dimension
1170 for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1171 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
1172 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
1174 buffer_strcat(wb, separator);
1176 calculated_number n = cn[c];
1178 if(co[c] & RRDR_EMPTY) {
1179 if(options & RRDR_OPTION_NULL2ZERO)
1180 buffer_strcat(wb, "0");
1182 buffer_strcat(wb, "null");
1185 if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1188 if(unlikely(options & RRDR_OPTION_PERCENTAGE))
1189 n = n * 100 / total;
1191 buffer_rrd_value(wb, n);
1195 buffer_strcat(wb, endline);
1197 //info("RRD2CSV(): %s: END", r->st->id);
1200 inline static calculated_number rrdr2value(RRDR *r, long i, uint32_t options, int *all_values_are_null) {
1204 calculated_number *cn = &r->v[ i * r->d ];
1205 uint8_t *co = &r->o[ i * r->d ];
1207 calculated_number sum = 0, min = 0, max = 0, v;
1208 int all_null = 1, init = 1;
1210 calculated_number total = 1;
1211 if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
1213 for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1214 calculated_number n = cn[c];
1216 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1221 // prevent a division by zero
1222 if(total == 0) total = 1;
1225 // for each dimension
1226 for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
1227 if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
1228 if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
1230 calculated_number n = cn[c];
1232 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
1235 if(unlikely(options & RRDR_OPTION_PERCENTAGE))
1236 n = n * 100 / total;
1238 if(unlikely(init)) {
1250 if(likely(!(co[c] & RRDR_EMPTY))) {
1255 if(n < min) min = n;
1256 if(n > max) max = n;
1259 if(unlikely(all_null)) {
1260 if(likely(all_values_are_null))
1261 *all_values_are_null = 1;
1265 if(likely(all_values_are_null))
1266 *all_values_are_null = 0;
1269 if(options & RRDR_OPTION_MIN2MAX)
1277 static void rrdr2ssv(RRDR *r, BUFFER *wb, uint32_t options, const char *prefix, const char *separator, const char *suffix)
1279 //info("RRD2SSV(): %s: BEGIN", r->st->id);
1282 buffer_strcat(wb, prefix);
1283 long start = 0, end = rrdr_rows(r), step = 1;
1284 if((options & RRDR_OPTION_REVERSED)) {
1285 start = rrdr_rows(r) - 1;
1290 // for each line in the array
1291 for(i = start; i != end ;i += step) {
1292 int all_values_are_null = 0;
1293 calculated_number v = rrdr2value(r, i, options, &all_values_are_null);
1295 if(likely(i != start)) {
1296 if(r->min > v) r->min = v;
1297 if(r->max < v) r->max = v;
1304 if(likely(i != start))
1305 buffer_strcat(wb, separator);
1307 if(all_values_are_null) {
1308 if(options & RRDR_OPTION_NULL2ZERO)
1309 buffer_strcat(wb, "0");
1311 buffer_strcat(wb, "null");
1314 buffer_rrd_value(wb, v);
1316 buffer_strcat(wb, suffix);
1317 //info("RRD2SSV(): %s: END", r->st->id);
1320 inline static calculated_number *rrdr_line_values(RRDR *r)
1322 return &r->v[ r->c * r->d ];
1325 inline static uint8_t *rrdr_line_options(RRDR *r)
1327 return &r->o[ r->c * r->d ];
1330 inline static int rrdr_line_init(RRDR *r, time_t t)
1334 if(unlikely(r->c >= r->n)) {
1335 error("requested to step above RRDR size for chart %s", r->st->name);
1345 inline static void rrdr_lock_rrdset(RRDR *r) {
1347 error("NULL value given!");
1351 pthread_rwlock_rdlock(&r->st->rwlock);
1355 inline static void rrdr_unlock_rrdset(RRDR *r) {
1357 error("NULL value given!");
1361 if(likely(r->has_st_lock)) {
1362 pthread_rwlock_unlock(&r->st->rwlock);
1367 inline static void rrdr_free(RRDR *r)
1370 error("NULL value given!");
1374 rrdr_unlock_rrdset(r);
1382 static inline void rrdr_done(RRDR *r)
1388 static RRDR *rrdr_create(RRDSET *st, long n)
1391 error("NULL value given!");
1395 RRDR *r = callocz(1, sizeof(RRDR));
1398 rrdr_lock_rrdset(r);
1401 for(rd = st->dimensions ; rd ; rd = rd->next) r->d++;
1405 r->t = mallocz(n * sizeof(time_t));
1406 r->v = mallocz(n * r->d * sizeof(calculated_number));
1407 r->o = mallocz(n * r->d * sizeof(uint8_t));
1408 r->od = mallocz(r->d * sizeof(uint8_t));
1410 // set the hidden flag on hidden dimensions
1412 for(c = 0, rd = st->dimensions ; rd ; c++, rd = rd->next) {
1413 if(unlikely(rd->flags & RRDDIM_FLAG_HIDDEN)) r->od[c] = RRDR_HIDDEN;
1419 r->update_every = 1;
1424 RRDR *rrd2rrdr(RRDSET *st, long points, long long after, long long before, int group_method, int aligned)
1426 int debug = st->debug;
1427 int absolute_period_requested = -1;
1429 time_t first_entry_t = rrdset_first_entry_t(st);
1430 time_t last_entry_t = rrdset_last_entry_t(st);
1432 if(before == 0 && after == 0) {
1433 // dump the all the data
1434 before = last_entry_t;
1435 after = first_entry_t;
1436 absolute_period_requested = 0;
1439 // allow relative for before (smaller than API_RELATIVE_TIME_MAX)
1440 if(((before < 0)?-before:before) <= API_RELATIVE_TIME_MAX) {
1441 if(abs(before) % st->update_every) {
1442 // make sure it is multiple of st->update_every
1443 if(before < 0) before = before - st->update_every - before % st->update_every;
1444 else before = before + st->update_every - before % st->update_every;
1446 if(before > 0) before = first_entry_t + before;
1447 else before = last_entry_t + before;
1448 absolute_period_requested = 0;
1451 // allow relative for after (smaller than API_RELATIVE_TIME_MAX)
1452 if(((after < 0)?-after:after) <= API_RELATIVE_TIME_MAX) {
1453 if(after == 0) after = -st->update_every;
1454 if(abs(after) % st->update_every) {
1455 // make sure it is multiple of st->update_every
1456 if(after < 0) after = after - st->update_every - after % st->update_every;
1457 else after = after + st->update_every - after % st->update_every;
1459 after = before + after;
1460 absolute_period_requested = 0;
1463 if(absolute_period_requested == -1)
1464 absolute_period_requested = 1;
1466 // make sure they are within our timeframe
1467 if(before > last_entry_t) before = last_entry_t;
1468 if(before < first_entry_t) before = first_entry_t;
1470 if(after > last_entry_t) after = last_entry_t;
1471 if(after < first_entry_t) after = first_entry_t;
1473 // check if they are upside down
1474 if(after > before) {
1475 time_t tmp = before;
1480 // the duration of the chart
1481 time_t duration = before - after;
1482 long available_points = duration / st->update_every;
1484 if(duration <= 0 || available_points <= 0)
1485 return rrdr_create(st, 1);
1487 // check the wanted points
1488 if(points < 0) points = -points;
1489 if(points > available_points) points = available_points;
1490 if(points == 0) points = available_points;
1492 // calculate proper grouping of source data
1493 long group = available_points / points;
1494 if(group <= 0) group = 1;
1496 // round group to the closest integer
1497 if(available_points % points > points / 2) group++;
1499 time_t after_new = (aligned) ? (after - (after % (group * st->update_every))) : after;
1500 time_t before_new = (aligned) ? (before - (before % (group * st->update_every))) : before;
1501 long points_new = (before_new - after_new) / st->update_every / group;
1503 // find the starting and ending slots in our round robin db
1504 long start_at_slot = rrdset_time2slot(st, before_new),
1505 stop_at_slot = rrdset_time2slot(st, after_new);
1507 #ifdef NETDATA_INTERNAL_CHECKS
1508 if(after_new < first_entry_t) {
1509 error("after_new %u is too small, minimum %u", (uint32_t)after_new, (uint32_t)first_entry_t);
1511 if(after_new > last_entry_t) {
1512 error("after_new %u is too big, maximum %u", (uint32_t)after_new, (uint32_t)last_entry_t);
1514 if(before_new < first_entry_t) {
1515 error("before_new %u is too small, minimum %u", (uint32_t)before_new, (uint32_t)first_entry_t);
1517 if(before_new > last_entry_t) {
1518 error("before_new %u is too big, maximum %u", (uint32_t)before_new, (uint32_t)last_entry_t);
1520 if(start_at_slot < 0 || start_at_slot >= st->entries) {
1521 error("start_at_slot is invalid %ld, expected 0 to %ld", start_at_slot, st->entries - 1);
1523 if(stop_at_slot < 0 || stop_at_slot >= st->entries) {
1524 error("stop_at_slot is invalid %ld, expected 0 to %ld", stop_at_slot, st->entries - 1);
1526 if(points_new > (before_new - after_new) / group / st->update_every + 1) {
1527 error("points_new %ld is more than points %ld", points_new, (before_new - after_new) / group / st->update_every + 1);
1531 //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);
1534 before = before_new;
1535 duration = before - after;
1536 points = points_new;
1539 // before = the end time of the calculation
1540 // after = the start time of the calculation
1541 // duration = the duration of the calculation
1542 // group = the number of source points to aggregate / group together
1543 // method = the method of grouping source points
1544 // points = the number of points to generate
1547 // -------------------------------------------------------------------------
1548 // initialize our result set
1550 RRDR *r = rrdr_create(st, points);
1552 #ifdef NETDATA_INTERNAL_CHECKS
1553 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);
1558 #ifdef NETDATA_INTERNAL_CHECKS
1559 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);
1564 if(absolute_period_requested == 1)
1565 r->result_options |= RRDR_RESULT_OPTION_ABSOLUTE;
1567 r->result_options |= RRDR_RESULT_OPTION_RELATIVE;
1569 // find how many dimensions we have
1570 long dimensions = r->d;
1573 // -------------------------------------------------------------------------
1574 // checks for debugging
1576 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"
1578 , (uint32_t)first_entry_t
1579 , (uint32_t)last_entry_t
1580 , (uint32_t)(last_entry_t - first_entry_t)
1583 , (uint32_t)duration
1589 // -------------------------------------------------------------------------
1590 // temp arrays for keeping values per dimension
1592 calculated_number last_values[dimensions]; // keep the last value of each dimension
1593 calculated_number group_values[dimensions]; // keep sums when grouping
1594 long group_counts[dimensions]; // keep the number of values added to group_values
1595 uint8_t group_options[dimensions];
1596 uint8_t found_non_zero[dimensions];
1602 for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
1604 group_values[c] = (group_method == GROUP_MAX || group_method == GROUP_MIN)?NAN:0;
1605 group_counts[c] = 0;
1606 group_options[c] = 0;
1607 found_non_zero[c] = 0;
1611 // -------------------------------------------------------------------------
1614 time_t now = rrdset_slot2time(st, start_at_slot),
1615 dt = st->update_every,
1618 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"
1630 r->update_every = group * st->update_every;
1634 //info("RRD2RRDR(): %s: STARTING", st->id);
1636 long slot = start_at_slot, counter = 0, stop_now = 0, added = 0, group_count = 0, add_this = 0;
1637 for(; !stop_now ; now -= dt, slot--, counter++) {
1638 if(unlikely(slot < 0)) slot = st->entries - 1;
1639 if(unlikely(slot == stop_at_slot)) stop_now = counter;
1641 if(unlikely(debug)) debug(D_RRD_STATS, "ROW %s slot: %ld, entries_counter: %ld, group_count: %ld, added: %ld, now: %ld, %s %s"
1648 , (group_count + 1 == group)?"PRINT":" - "
1649 , (now >= after && now <= before)?"RANGE":" - "
1652 // make sure we return data in the proper time range
1653 if(unlikely(now > before)) continue;
1654 if(unlikely(now < after)) break;
1656 if(unlikely(group_count == 0)) {
1657 group_start_t = now;
1661 if(unlikely(group_count == group)) {
1662 if(unlikely(added >= points)) break;
1666 // do the calculations
1667 for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
1668 storage_number n = rd->values[slot];
1669 if(unlikely(!does_storage_number_exist(n))) continue;
1673 calculated_number value = unpack_storage_number(n);
1674 if(likely(value != 0.0)) {
1675 group_options[c] |= RRDR_NONZERO;
1676 found_non_zero[c] = 1;
1679 if(unlikely(did_storage_number_reset(n)))
1680 group_options[c] |= RRDR_RESET;
1682 switch(group_method) {
1684 if(unlikely(isnan(group_values[c])) ||
1685 fabsl(value) < fabsl(group_values[c]))
1686 group_values[c] = value;
1690 if(unlikely(isnan(group_values[c])) ||
1691 fabsl(value) > fabsl(group_values[c]))
1692 group_values[c] = value;
1698 case GROUP_UNDEFINED:
1699 group_values[c] += value;
1702 case GROUP_INCREMENTAL_SUM:
1703 if(unlikely(slot == start_at_slot))
1704 last_values[c] = value;
1706 group_values[c] += last_values[c] - value;
1707 last_values[c] = value;
1713 if(unlikely(add_this)) {
1714 if(unlikely(!rrdr_line_init(r, group_start_t))) break;
1718 calculated_number *cn = rrdr_line_values(r);
1719 uint8_t *co = rrdr_line_options(r);
1721 for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
1723 // update the dimension options
1724 if(likely(found_non_zero[c])) r->od[c] |= RRDR_NONZERO;
1726 // store the specific point options
1727 co[c] = group_options[c];
1730 if(unlikely(group_counts[c] == 0)) {
1732 co[c] |= RRDR_EMPTY;
1733 group_values[c] = (group_method == GROUP_MAX || group_method == GROUP_MIN)?NAN:0;
1736 switch(group_method) {
1739 if(unlikely(isnan(group_values[c])))
1742 cn[c] = group_values[c];
1743 group_values[c] = NAN;
1748 case GROUP_INCREMENTAL_SUM:
1749 cn[c] = group_values[c];
1750 group_values[c] = 0;
1755 case GROUP_UNDEFINED:
1756 cn[c] = group_values[c] / group_counts[c];
1757 group_values[c] = 0;
1761 if(cn[c] < r->min) r->min = cn[c];
1762 if(cn[c] > r->max) r->max = cn[c];
1765 // reset for the next loop
1766 group_counts[c] = 0;
1767 group_options[c] = 0;
1777 //info("RRD2RRDR(): %s: END %ld loops made, %ld points generated", st->id, counter, rrdr_rows(r));
1778 //error("SHIFT: %s: wanted %ld points, got %ld", st->id, points, rrdr_rows(r));
1782 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)
1784 RRDR *r = rrd2rrdr(st, points, after, before, group_method, !(options & RRDR_OPTION_NOT_ALIGNED));
1786 if(value_is_null) *value_is_null = 1;
1790 if(rrdr_rows(r) == 0) {
1793 if(db_after) *db_after = 0;
1794 if(db_before) *db_before = 0;
1795 if(value_is_null) *value_is_null = 1;
1800 if(r->result_options & RRDR_RESULT_OPTION_RELATIVE)
1801 buffer_no_cacheable(wb);
1802 else if(r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
1803 buffer_cacheable(wb);
1805 options = rrdr_check_options(r, options, dimensions);
1808 rrdr_disable_not_selected_dimensions(r, options, dimensions);
1810 if(db_after) *db_after = r->after;
1811 if(db_before) *db_before = r->before;
1813 long i = (options & RRDR_OPTION_REVERSED)?rrdr_rows(r) - 1:0;
1814 *n = rrdr2value(r, i, options, value_is_null);
1820 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)
1822 RRDR *r = rrd2rrdr(st, points, after, before, group_method, !(options & RRDR_OPTION_NOT_ALIGNED));
1824 buffer_strcat(wb, "Cannot generate output with these parameters on this chart.");
1828 if(r->result_options & RRDR_RESULT_OPTION_RELATIVE)
1829 buffer_no_cacheable(wb);
1830 else if(r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
1831 buffer_cacheable(wb);
1833 options = rrdr_check_options(r, options, (dimensions)?buffer_tostring(dimensions):NULL);
1836 rrdr_disable_not_selected_dimensions(r, options, buffer_tostring(dimensions));
1838 if(latest_timestamp && rrdr_rows(r) > 0)
1839 *latest_timestamp = r->before;
1842 case DATASOURCE_SSV:
1843 if(options & RRDR_OPTION_JSON_WRAP) {
1844 wb->contenttype = CT_APPLICATION_JSON;
1845 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1846 rrdr2ssv(r, wb, options, "", " ", "");
1847 rrdr_json_wrapper_end(r, wb, format, options, 1);
1850 wb->contenttype = CT_TEXT_PLAIN;
1851 rrdr2ssv(r, wb, options, "", " ", "");
1855 case DATASOURCE_SSV_COMMA:
1856 if(options & RRDR_OPTION_JSON_WRAP) {
1857 wb->contenttype = CT_APPLICATION_JSON;
1858 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1859 rrdr2ssv(r, wb, options, "", ",", "");
1860 rrdr_json_wrapper_end(r, wb, format, options, 1);
1863 wb->contenttype = CT_TEXT_PLAIN;
1864 rrdr2ssv(r, wb, options, "", ",", "");
1868 case DATASOURCE_JS_ARRAY:
1869 if(options & RRDR_OPTION_JSON_WRAP) {
1870 wb->contenttype = CT_APPLICATION_JSON;
1871 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1872 rrdr2ssv(r, wb, options, "[", ",", "]");
1873 rrdr_json_wrapper_end(r, wb, format, options, 0);
1876 wb->contenttype = CT_APPLICATION_JSON;
1877 rrdr2ssv(r, wb, options, "[", ",", "]");
1881 case DATASOURCE_CSV:
1882 if(options & RRDR_OPTION_JSON_WRAP) {
1883 wb->contenttype = CT_APPLICATION_JSON;
1884 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1885 rrdr2csv(r, wb, options, "", ",", "\\n", "");
1886 rrdr_json_wrapper_end(r, wb, format, options, 1);
1889 wb->contenttype = CT_TEXT_PLAIN;
1890 rrdr2csv(r, wb, options, "", ",", "\r\n", "");
1894 case DATASOURCE_CSV_JSON_ARRAY:
1895 wb->contenttype = CT_APPLICATION_JSON;
1896 if(options & RRDR_OPTION_JSON_WRAP) {
1897 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1898 buffer_strcat(wb, "[\n");
1899 rrdr2csv(r, wb, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
1900 buffer_strcat(wb, "\n]");
1901 rrdr_json_wrapper_end(r, wb, format, options, 0);
1904 wb->contenttype = CT_TEXT_PLAIN;
1905 buffer_strcat(wb, "[\n");
1906 rrdr2csv(r, wb, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
1907 buffer_strcat(wb, "\n]");
1911 case DATASOURCE_TSV:
1912 if(options & RRDR_OPTION_JSON_WRAP) {
1913 wb->contenttype = CT_APPLICATION_JSON;
1914 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1915 rrdr2csv(r, wb, options, "", "\t", "\\n", "");
1916 rrdr_json_wrapper_end(r, wb, format, options, 1);
1919 wb->contenttype = CT_TEXT_PLAIN;
1920 rrdr2csv(r, wb, options, "", "\t", "\r\n", "");
1924 case DATASOURCE_HTML:
1925 if(options & RRDR_OPTION_JSON_WRAP) {
1926 wb->contenttype = CT_APPLICATION_JSON;
1927 rrdr_json_wrapper_begin(r, wb, format, options, 1);
1928 buffer_strcat(wb, "<html>\\n<center>\\n<table border=\\\"0\\\" cellpadding=\\\"5\\\" cellspacing=\\\"5\\\">\\n");
1929 rrdr2csv(r, wb, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "");
1930 buffer_strcat(wb, "</table>\\n</center>\\n</html>\\n");
1931 rrdr_json_wrapper_end(r, wb, format, options, 1);
1934 wb->contenttype = CT_TEXT_HTML;
1935 buffer_strcat(wb, "<html>\n<center>\n<table border=\"0\" cellpadding=\"5\" cellspacing=\"5\">\n");
1936 rrdr2csv(r, wb, options, "<tr><td>", "</td><td>", "</td></tr>\n", "");
1937 buffer_strcat(wb, "</table>\n</center>\n</html>\n");
1941 case DATASOURCE_DATATABLE_JSONP:
1942 wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
1944 if(options & RRDR_OPTION_JSON_WRAP)
1945 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1947 rrdr2json(r, wb, options, 1);
1949 if(options & RRDR_OPTION_JSON_WRAP)
1950 rrdr_json_wrapper_end(r, wb, format, options, 0);
1953 case DATASOURCE_DATATABLE_JSON:
1954 wb->contenttype = CT_APPLICATION_JSON;
1956 if(options & RRDR_OPTION_JSON_WRAP)
1957 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1959 rrdr2json(r, wb, options, 1);
1961 if(options & RRDR_OPTION_JSON_WRAP)
1962 rrdr_json_wrapper_end(r, wb, format, options, 0);
1965 case DATASOURCE_JSONP:
1966 wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
1967 if(options & RRDR_OPTION_JSON_WRAP)
1968 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1970 rrdr2json(r, wb, options, 0);
1972 if(options & RRDR_OPTION_JSON_WRAP)
1973 rrdr_json_wrapper_end(r, wb, format, options, 0);
1976 case DATASOURCE_JSON:
1978 wb->contenttype = CT_APPLICATION_JSON;
1980 if(options & RRDR_OPTION_JSON_WRAP)
1981 rrdr_json_wrapper_begin(r, wb, format, options, 0);
1983 rrdr2json(r, wb, options, 0);
1985 if(options & RRDR_OPTION_JSON_WRAP)
1986 rrdr_json_wrapper_end(r, wb, format, options, 0);
1994 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)
1997 pthread_rwlock_rdlock(&st->rwlock);
2000 // -------------------------------------------------------------------------
2001 // switch from JSON to google JSON
2006 case DATASOURCE_DATATABLE_JSON:
2007 case DATASOURCE_DATATABLE_JSONP:
2012 case DATASOURCE_JSON:
2018 // -------------------------------------------------------------------------
2019 // validate the parameters
2021 if(points < 1) points = 1;
2022 if(group < 1) group = 1;
2024 if(before == 0 || before > rrdset_last_entry_t(st)) before = rrdset_last_entry_t(st);
2025 if(after == 0 || after < rrdset_first_entry_t(st)) after = rrdset_first_entry_t(st);
2029 // our return value (the last timestamp printed)
2030 // this is required to detect re-transmit in google JSONP
2031 time_t last_timestamp = 0;
2034 // -------------------------------------------------------------------------
2035 // find how many dimensions we have
2039 for( rd = st->dimensions ; rd ; rd = rd->next) dimensions++;
2041 pthread_rwlock_unlock(&st->rwlock);
2042 buffer_strcat(wb, "No dimensions yet.");
2047 // -------------------------------------------------------------------------
2048 // prepare various strings, to speed up the loop
2050 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);
2051 char normal_annotation[201]; snprintfz(normal_annotation, 200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
2052 char pre_date[51]; snprintfz(pre_date, 50, " {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
2053 char post_date[21]; snprintfz(post_date, 20, "%s}", sq);
2054 char pre_value[21]; snprintfz(pre_value, 20, ",{%sv%s:", kq, kq);
2055 char post_value[21]; strcpy(post_value, "}");
2058 // -------------------------------------------------------------------------
2059 // checks for debugging
2062 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"
2064 , rrdset_first_entry_t(st)
2065 , rrdset_last_entry_t(st)
2066 , rrdset_last_entry_t(st) - rrdset_first_entry_t(st)
2075 debug(D_RRD_STATS, "WARNING: %s The newest value in the database (%ld) is earlier than the oldest (%ld)", st->name, before, after);
2077 if((before - after) > st->entries * st->update_every)
2078 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);
2082 // -------------------------------------------------------------------------
2083 // temp arrays for keeping values per dimension
2085 calculated_number group_values[dimensions]; // keep sums when grouping
2086 int print_hidden[dimensions]; // keep hidden flags
2087 int found_non_zero[dimensions];
2088 int found_non_existing[dimensions];
2091 for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
2092 group_values[c] = 0;
2093 print_hidden[c] = (rd->flags & RRDDIM_FLAG_HIDDEN)?1:0;
2094 found_non_zero[c] = 0;
2095 found_non_existing[c] = 0;
2099 // 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);
2100 // rrd2array(st, entries_to_show, before - (st->update_every * group * entries_to_show), before, group_method, only_non_zero);
2101 // rrd2rrdr(st, entries_to_show, before - (st->update_every * group * entries_to_show), before, group_method);
2103 // -------------------------------------------------------------------------
2104 // remove dimensions that contain only zeros
2107 if(only_non_zero) max_loop = 2;
2109 for(; max_loop ; max_loop--) {
2111 // -------------------------------------------------------------------------
2112 // print the JSON header
2114 buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
2115 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);
2116 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);
2117 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);
2119 // print the header for each dimension
2120 // and update the print_hidden array for the dimensions that should be hidden
2122 for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
2123 if(!print_hidden[c]) {
2125 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);
2129 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);
2132 // print the begin of row data
2133 buffer_sprintf(wb, "\n ],\n %srows%s:\n [\n", kq, kq);
2136 // -------------------------------------------------------------------------
2139 int annotate_reset = 0;
2140 int annotation_count = 0;
2142 long t = rrdset_time2slot(st, before),
2143 stop_at_t = rrdset_time2slot(st, after),
2148 time_t now = rrdset_slot2time(st, t),
2149 dt = st->update_every;
2151 long count = 0, printed = 0, group_count = 0;
2154 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"
2161 , (uint32_t)rrdset_first_entry_t(st)
2162 , (uint32_t)rrdset_last_entry_t(st)
2168 for(; !stop_now ; now -= dt, t--, counter++) {
2169 if(t < 0) t = st->entries - 1;
2170 if(t == stop_at_t) stop_now = counter;
2174 if(st->debug) debug(D_RRD_STATS, "%s t = %ld, count = %ld, group_count = %ld, printed = %ld, now = %ld, %s %s"
2181 , (group_count + 1 == group)?"PRINT":" - "
2182 , (now >= after && now <= before)?"RANGE":" - "
2186 // make sure we return data in the proper time range
2187 if(now > before) continue;
2188 if(now < after) break;
2190 //if(rrdset_slot2time(st, t) != now)
2191 // 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));
2196 // check if we have to print this now
2197 if(group_count == group) {
2198 if(printed >= points) {
2199 // debug(D_RRD_STATS, "Already printed all rows. Stopping.");
2203 // generate the local date time
2204 struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
2205 if(!tm) { error("localtime() failed."); continue; }
2206 if(now > last_timestamp) last_timestamp = now;
2208 if(printed) buffer_strcat(wb, "]},\n");
2209 buffer_strcat(wb, pre_date);
2210 buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
2211 buffer_strcat(wb, post_date);
2216 // do the calculations
2217 for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
2218 storage_number n = rd->values[t];
2219 calculated_number value = unpack_storage_number(n);
2221 if(!does_storage_number_exist(n)) {
2223 found_non_existing[c]++;
2225 if(did_storage_number_reset(n)) annotate_reset = 1;
2227 switch(group_method) {
2229 if(abs(value) > abs(group_values[c])) group_values[c] = value;
2233 group_values[c] += value;
2238 group_values[c] += value;
2239 if(print_this) group_values[c] /= ( group_count - found_non_existing[c] );
2245 if(annotate_reset) {
2247 buffer_strcat(wb, overflow_annotation);
2251 buffer_strcat(wb, normal_annotation);
2254 for(c = 0 ; c < dimensions ; c++) {
2255 if(found_non_existing[c] == group_count) {
2256 // all entries are non-existing
2258 buffer_strcat(wb, pre_value);
2259 buffer_strcat(wb, "null");
2260 buffer_strcat(wb, post_value);
2262 else if(!print_hidden[c]) {
2264 buffer_strcat(wb, pre_value);
2265 buffer_rrd_value(wb, group_values[c]);
2266 buffer_strcat(wb, post_value);
2268 if(group_values[c]) found_non_zero[c]++;
2271 // reset them for the next loop
2272 group_values[c] = 0;
2273 found_non_existing[c] = 0;
2276 // if all dimensions are hidden, print a null
2278 buffer_strcat(wb, pre_value);
2279 buffer_strcat(wb, "null");
2280 buffer_strcat(wb, post_value);
2288 if(printed) buffer_strcat(wb, "]}");
2289 buffer_strcat(wb, "\n ]\n}\n");
2291 if(only_non_zero && max_loop > 1) {
2293 for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
2294 group_values[c] = 0;
2295 found_non_existing[c] = 0;
2297 if(!print_hidden[c] && !found_non_zero[c]) {
2299 print_hidden[c] = 1;
2303 if(changed) buffer_flush(wb);
2310 debug(D_RRD_STATS, "RRD_STATS_JSON: %s total %zu bytes", st->name, wb->len);
2312 pthread_rwlock_unlock(&st->rwlock);
2313 return last_timestamp;