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-rwxr-xr-xsrc/rrd2json.c2009
1 files changed, 2009 insertions, 0 deletions
diff --git a/src/rrd2json.c b/src/rrd2json.c
new file mode 100755
index 000000000..ad453cb68
--- /dev/null
+++ b/src/rrd2json.c
@@ -0,0 +1,2009 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "log.h"
+#include "common.h"
+#include "rrd2json.h"
+
+#define HOSTNAME_MAX 1024
+char *hostname = "unknown";
+
+void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb)
+{
+ pthread_rwlock_rdlock(&st->rwlock);
+
+ buffer_sprintf(wb,
+ "\t\t{\n"
+ "\t\t\t\"id\": \"%s\",\n"
+ "\t\t\t\"name\": \"%s\",\n"
+ "\t\t\t\"type\": \"%s\",\n"
+ "\t\t\t\"family\": \"%s\",\n"
+ "\t\t\t\"context\": \"%s\",\n"
+ "\t\t\t\"title\": \"%s\",\n"
+ "\t\t\t\"priority\": %ld,\n"
+ "\t\t\t\"enabled\": %s,\n"
+ "\t\t\t\"units\": \"%s\",\n"
+ "\t\t\t\"data_url\": \"/api/v1/data?chart=%s\",\n"
+ "\t\t\t\"chart_type\": \"%s\",\n"
+ "\t\t\t\"duration\": %ld,\n"
+ "\t\t\t\"first_entry\": %lu,\n"
+ "\t\t\t\"last_entry\": %lu,\n"
+ "\t\t\t\"update_every\": %d,\n"
+ "\t\t\t\"dimensions\": {\n"
+ , st->id
+ , st->name
+ , st->type
+ , st->family
+ , st->context
+ , st->title
+ , st->priority
+ , st->enabled?"true":"false"
+ , st->units
+ , st->name
+ , rrdset_type_name(st->chart_type)
+ , st->entries * st->update_every
+ , rrdset_first_entry_t(st)
+ , rrdset_last_entry_t(st)
+ , st->update_every
+ );
+
+ unsigned long memory = st->memsize;
+
+ int c = 0;
+ RRDDIM *rd;
+ for(rd = st->dimensions; rd ; rd = rd->next) {
+ if(rd->flags & RRDDIM_FLAG_HIDDEN) continue;
+
+ memory += rd->memsize;
+
+ buffer_sprintf(wb,
+ "%s"
+ "\t\t\t\t\"%s\": { \"name\": \"%s\" }"
+ , c?",\n":""
+ , rd->id
+ , rd->name
+ );
+
+ c++;
+ }
+
+ buffer_sprintf(wb,
+ "\n\t\t\t}\n"
+ "\t\t}"
+ );
+
+ pthread_rwlock_unlock(&st->rwlock);
+}
+
+void rrd_stats_api_v1_charts(BUFFER *wb)
+{
+ long c;
+ RRDSET *st;
+
+ buffer_sprintf(wb, "{\n"
+ "\t\"hostname\": \"%s\""
+ ",\n\t\"update_every\": %d"
+ ",\n\t\"history\": %d"
+ ",\n\t\"charts\": {"
+ , hostname
+ , rrd_update_every
+ , rrd_default_history_entries
+ );
+
+ pthread_rwlock_rdlock(&rrdset_root_rwlock);
+ for(st = rrdset_root, c = 0; st ; st = st->next) {
+ if(st->enabled) {
+ if(c) buffer_strcat(wb, ",");
+ buffer_strcat(wb, "\n\t\t\"");
+ buffer_strcat(wb, st->id);
+ buffer_strcat(wb, "\": ");
+ rrd_stats_api_v1_chart(st, wb);
+ c++;
+ }
+ }
+ pthread_rwlock_unlock(&rrdset_root_rwlock);
+
+ buffer_strcat(wb, "\n\t}\n}\n");
+}
+
+
+unsigned long rrd_stats_one_json(RRDSET *st, char *options, BUFFER *wb)
+{
+ time_t now = time(NULL);
+
+ pthread_rwlock_rdlock(&st->rwlock);
+
+ buffer_sprintf(wb,
+ "\t\t{\n"
+ "\t\t\t\"id\": \"%s\",\n"
+ "\t\t\t\"name\": \"%s\",\n"
+ "\t\t\t\"type\": \"%s\",\n"
+ "\t\t\t\"family\": \"%s\",\n"
+ "\t\t\t\"context\": \"%s\",\n"
+ "\t\t\t\"title\": \"%s\",\n"
+ "\t\t\t\"priority\": %ld,\n"
+ "\t\t\t\"enabled\": %d,\n"
+ "\t\t\t\"units\": \"%s\",\n"
+ "\t\t\t\"url\": \"/data/%s/%s\",\n"
+ "\t\t\t\"chart_type\": \"%s\",\n"
+ "\t\t\t\"counter\": %ld,\n"
+ "\t\t\t\"entries\": %ld,\n"
+ "\t\t\t\"first_entry_t\": %lu,\n"
+ "\t\t\t\"last_entry\": %ld,\n"
+ "\t\t\t\"last_entry_t\": %lu,\n"
+ "\t\t\t\"last_entry_secs_ago\": %lu,\n"
+ "\t\t\t\"update_every\": %d,\n"
+ "\t\t\t\"isdetail\": %d,\n"
+ "\t\t\t\"usec_since_last_update\": %llu,\n"
+ "\t\t\t\"collected_total\": " TOTAL_NUMBER_FORMAT ",\n"
+ "\t\t\t\"last_collected_total\": " TOTAL_NUMBER_FORMAT ",\n"
+ "\t\t\t\"dimensions\": [\n"
+ , st->id
+ , st->name
+ , st->type
+ , st->family
+ , st->context
+ , st->title
+ , st->priority
+ , st->enabled
+ , st->units
+ , st->name, options?options:""
+ , rrdset_type_name(st->chart_type)
+ , st->counter
+ , st->entries
+ , rrdset_first_entry_t(st)
+ , rrdset_last_slot(st)
+ , rrdset_last_entry_t(st)
+ , (now < rrdset_last_entry_t(st)) ? (time_t)0 : now - rrdset_last_entry_t(st)
+ , st->update_every
+ , st->isdetail
+ , st->usec_since_last_update
+ , st->collected_total
+ , st->last_collected_total
+ );
+
+ unsigned long memory = st->memsize;
+
+ RRDDIM *rd;
+ for(rd = st->dimensions; rd ; rd = rd->next) {
+
+ memory += rd->memsize;
+
+ buffer_sprintf(wb,
+ "\t\t\t\t{\n"
+ "\t\t\t\t\t\"id\": \"%s\",\n"
+ "\t\t\t\t\t\"name\": \"%s\",\n"
+ "\t\t\t\t\t\"entries\": %ld,\n"
+ "\t\t\t\t\t\"isHidden\": %d,\n"
+ "\t\t\t\t\t\"algorithm\": \"%s\",\n"
+ "\t\t\t\t\t\"multiplier\": %ld,\n"
+ "\t\t\t\t\t\"divisor\": %ld,\n"
+ "\t\t\t\t\t\"last_entry_t\": %lu,\n"
+ "\t\t\t\t\t\"collected_value\": " COLLECTED_NUMBER_FORMAT ",\n"
+ "\t\t\t\t\t\"calculated_value\": " CALCULATED_NUMBER_FORMAT ",\n"
+ "\t\t\t\t\t\"last_collected_value\": " COLLECTED_NUMBER_FORMAT ",\n"
+ "\t\t\t\t\t\"last_calculated_value\": " CALCULATED_NUMBER_FORMAT ",\n"
+ "\t\t\t\t\t\"memory\": %lu\n"
+ "\t\t\t\t}%s\n"
+ , rd->id
+ , rd->name
+ , rd->entries
+ , (rd->flags & RRDDIM_FLAG_HIDDEN)?1:0
+ , rrddim_algorithm_name(rd->algorithm)
+ , rd->multiplier
+ , rd->divisor
+ , rd->last_collected_time.tv_sec
+ , rd->collected_value
+ , rd->calculated_value
+ , rd->last_collected_value
+ , rd->last_calculated_value
+ , rd->memsize
+ , rd->next?",":""
+ );
+ }
+
+ buffer_sprintf(wb,
+ "\t\t\t],\n"
+ "\t\t\t\"memory\" : %lu\n"
+ "\t\t}"
+ , memory
+ );
+
+ pthread_rwlock_unlock(&st->rwlock);
+ return memory;
+}
+
+#define RRD_GRAPH_JSON_HEADER "{\n\t\"charts\": [\n"
+#define RRD_GRAPH_JSON_FOOTER "\n\t]\n}\n"
+
+void rrd_stats_graph_json(RRDSET *st, char *options, BUFFER *wb)
+{
+ buffer_strcat(wb, RRD_GRAPH_JSON_HEADER);
+ rrd_stats_one_json(st, options, wb);
+ buffer_strcat(wb, RRD_GRAPH_JSON_FOOTER);
+}
+
+void rrd_stats_all_json(BUFFER *wb)
+{
+ unsigned long memory = 0;
+ long c;
+ RRDSET *st;
+
+ buffer_strcat(wb, RRD_GRAPH_JSON_HEADER);
+
+ pthread_rwlock_rdlock(&rrdset_root_rwlock);
+ for(st = rrdset_root, c = 0; st ; st = st->next) {
+ if(st->enabled) {
+ if(c) buffer_strcat(wb, ",\n");
+ memory += rrd_stats_one_json(st, NULL, wb);
+ c++;
+ }
+ }
+ pthread_rwlock_unlock(&rrdset_root_rwlock);
+
+ buffer_sprintf(wb, "\n\t],\n"
+ "\t\"hostname\": \"%s\",\n"
+ "\t\"update_every\": %d,\n"
+ "\t\"history\": %d,\n"
+ "\t\"memory\": %lu\n"
+ "}\n"
+ , hostname
+ , rrd_update_every
+ , rrd_default_history_entries
+ , memory
+ );
+}
+
+
+
+// ----------------------------------------------------------------------------
+
+// RRDR dimension options
+#define RRDR_EMPTY 0x01 // the dimension contains / the value is empty (null)
+#define RRDR_RESET 0x02 // the dimension contains / the value is reset
+#define RRDR_HIDDEN 0x04 // the dimension contains / the value is hidden
+#define RRDR_NONZERO 0x08 // the dimension contains / the value is non-zero
+
+// RRDR result options
+#define RRDR_RESULT_OPTION_ABSOLUTE 0x00000001
+#define RRDR_RESULT_OPTION_RELATIVE 0x00000002
+
+typedef struct rrdresult {
+ RRDSET *st; // the chart this result refers to
+
+ uint32_t result_options; // RRDR_RESULT_OPTION_*
+
+ int d; // the number of dimensions
+ long n; // the number of values in the arrays
+ long rows; // the number of rows used
+
+ uint8_t *od; // the options for the dimensions
+
+ time_t *t; // array of n timestamps
+ calculated_number *v; // array n x d values
+ uint8_t *o; // array n x d options
+
+ long c; // current line ( -1 ~ n ), ( -1 = none, use rrdr_rows() to get number of rows )
+
+ long group; // how many collected values were grouped for each row
+ long update_every; // what is the suggested update frequency in seconds
+
+ calculated_number min;
+ calculated_number max;
+
+ time_t before;
+ time_t after;
+
+ int has_st_lock; // if st is read locked by us
+} RRDR;
+
+#define rrdr_rows(r) ((r)->rows)
+
+/*
+static void rrdr_dump(RRDR *r)
+{
+ long c, i;
+ RRDDIM *d;
+
+ fprintf(stderr, "\nCHART %s (%s)\n", r->st->id, r->st->name);
+
+ for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
+ fprintf(stderr, "DIMENSION %s (%s), %s%s%s%s\n"
+ , d->id
+ , d->name
+ , (r->od[c] & RRDR_EMPTY)?"EMPTY ":""
+ , (r->od[c] & RRDR_RESET)?"RESET ":""
+ , (r->od[c] & RRDR_HIDDEN)?"HIDDEN ":""
+ , (r->od[c] & RRDR_NONZERO)?"NONZERO ":""
+ );
+ }
+
+ if(r->rows <= 0) {
+ fprintf(stderr, "RRDR does not have any values in it.\n");
+ return;
+ }
+
+ fprintf(stderr, "RRDR includes %d values in it:\n", r->rows);
+
+ // for each line in the array
+ for(i = 0; i < r->rows ;i++) {
+ calculated_number *cn = &r->v[ i * r->d ];
+ uint8_t *co = &r->o[ i * r->d ];
+
+ // print the id and the timestamp of the line
+ fprintf(stderr, "%ld %ld ", i + 1, r->t[i]);
+
+ // for each dimension
+ for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
+
+ if(co[c] & RRDR_EMPTY)
+ fprintf(stderr, "null ");
+ else
+ fprintf(stderr, CALCULATED_NUMBER_FORMAT " %s%s%s%s "
+ , cn[c]
+ , (co[c] & RRDR_EMPTY)?"E":" "
+ , (co[c] & RRDR_RESET)?"R":" "
+ , (co[c] & RRDR_HIDDEN)?"H":" "
+ , (co[c] & RRDR_NONZERO)?"N":" "
+ );
+ }
+
+ fprintf(stderr, "\n");
+ }
+}
+*/
+
+void rrdr_disable_not_selected_dimensions(RRDR *r, const char *dims)
+{
+ char b[strlen(dims) + 1];
+ char *o = b, *tok;
+ strcpy(o, dims);
+
+ long c;
+ RRDDIM *d;
+
+ // disable all of them
+ for(c = 0, d = r->st->dimensions; d ;c++, d = d->next)
+ r->od[c] |= RRDR_HIDDEN;
+
+ while(o && *o && (tok = mystrsep(&o, ", |"))) {
+ if(!*tok) continue;
+
+ // find it and enable it
+ for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
+ if(!strcmp(d->name, tok)) {
+ r->od[c] &= ~RRDR_HIDDEN;
+
+ // since the user needs this dimension
+ // make it appear as NONZERO, to return it
+ // even if the dimension has only zeros
+ r->od[c] |= RRDR_NONZERO;
+ }
+ }
+ }
+}
+
+void rrdr_buffer_print_format(BUFFER *wb, uint32_t format)
+{
+ switch(format) {
+ case DATASOURCE_JSON:
+ buffer_strcat(wb, DATASOURCE_FORMAT_JSON);
+ break;
+
+ case DATASOURCE_DATATABLE_JSON:
+ buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSON);
+ break;
+
+ case DATASOURCE_DATATABLE_JSONP:
+ buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSONP);
+ break;
+
+ case DATASOURCE_JSONP:
+ buffer_strcat(wb, DATASOURCE_FORMAT_JSONP);
+ break;
+
+ case DATASOURCE_SSV:
+ buffer_strcat(wb, DATASOURCE_FORMAT_SSV);
+ break;
+
+ case DATASOURCE_CSV:
+ buffer_strcat(wb, DATASOURCE_FORMAT_CSV);
+ break;
+
+ case DATASOURCE_TSV:
+ buffer_strcat(wb, DATASOURCE_FORMAT_TSV);
+ break;
+
+ case DATASOURCE_HTML:
+ buffer_strcat(wb, DATASOURCE_FORMAT_HTML);
+ break;
+
+ case DATASOURCE_JS_ARRAY:
+ buffer_strcat(wb, DATASOURCE_FORMAT_JS_ARRAY);
+ break;
+
+ case DATASOURCE_SSV_COMMA:
+ buffer_strcat(wb, DATASOURCE_FORMAT_SSV_COMMA);
+ break;
+
+ default:
+ buffer_strcat(wb, "unknown");
+ break;
+ }
+}
+
+uint32_t rrdr_check_options(RRDR *r, uint32_t options, const char *dims)
+{
+ if(options & RRDR_OPTION_NONZERO) {
+ long i;
+
+ if(dims && *dims) {
+ // the caller wants specific dimensions
+ // disable NONZERO option
+ // to make sure we don't accidentally prevent
+ // the specific dimensions from being returned
+ i = 0;
+ }
+ else {
+ // find how many dimensions are not zero
+ long c;
+ RRDDIM *rd;
+ for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ; c++, rd = rd->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
+ i++;
+ }
+ }
+
+ // if with nonzero we get i = 0 (no dimensions will be returned)
+ // disable nonzero to show all dimensions
+ if(!i) options &= ~RRDR_OPTION_NONZERO;
+ }
+
+ return options;
+}
+
+void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
+{
+ long rows = rrdr_rows(r);
+ long c, i;
+ RRDDIM *rd;
+
+ //info("JSONWRAPPER(): %s: BEGIN", r->st->id);
+ char kq[2] = "", // key quote
+ sq[2] = ""; // string quote
+
+ if( options & RRDR_OPTION_GOOGLE_JSON ) {
+ kq[0] = '\0';
+ sq[0] = '\'';
+ }
+ else {
+ kq[0] = '"';
+ sq[0] = '"';
+ }
+
+ buffer_sprintf(wb, "{\n"
+ " %sapi%s: 1,\n"
+ " %sid%s: %s%s%s,\n"
+ " %sname%s: %s%s%s,\n"
+ " %sview_update_every%s: %d,\n"
+ " %supdate_every%s: %d,\n"
+ " %sfirst_entry%s: %u,\n"
+ " %slast_entry%s: %u,\n"
+ " %sbefore%s: %u,\n"
+ " %safter%s: %u,\n"
+ " %sdimension_names%s: ["
+ , kq, kq
+ , kq, kq, sq, r->st->id, sq
+ , kq, kq, sq, r->st->name, sq
+ , kq, kq, r->update_every
+ , kq, kq, r->st->update_every
+ , kq, kq, rrdset_first_entry_t(r->st)
+ , kq, kq, rrdset_last_entry_t(r->st)
+ , kq, kq, r->before
+ , kq, kq, r->after
+ , kq, kq);
+
+ for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ if(i) buffer_strcat(wb, ", ");
+ buffer_strcat(wb, sq);
+ buffer_strcat(wb, rd->name);
+ buffer_strcat(wb, sq);
+ i++;
+ }
+ if(!i) {
+#ifdef NETDATA_INTERNAL_CHECKS
+ error("RRDR is empty for %s (RRDR has %d dimensions, options is 0x%08x)", r->st->id, r->d, options);
+#endif
+ rows = 0;
+ buffer_strcat(wb, sq);
+ buffer_strcat(wb, "no data");
+ buffer_strcat(wb, sq);
+ }
+
+ buffer_sprintf(wb, "],\n"
+ " %sdimension_ids%s: ["
+ , kq, kq);
+
+ for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ if(i) buffer_strcat(wb, ", ");
+ buffer_strcat(wb, sq);
+ buffer_strcat(wb, rd->id);
+ buffer_strcat(wb, sq);
+ i++;
+ }
+ if(!i) {
+ rows = 0;
+ buffer_strcat(wb, sq);
+ buffer_strcat(wb, "no data");
+ buffer_strcat(wb, sq);
+ }
+
+ buffer_sprintf(wb, "],\n"
+ " %slatest_values%s: ["
+ , kq, kq);
+
+ for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ if(i) buffer_strcat(wb, ", ");
+ i++;
+
+ storage_number n = rd->values[rrdset_last_slot(r->st)];
+
+ if(!does_storage_number_exist(n))
+ buffer_strcat(wb, "null");
+ else
+ buffer_rrd_value(wb, unpack_storage_number(n));
+ }
+ if(!i) {
+ rows = 0;
+ buffer_strcat(wb, "null");
+ }
+
+ buffer_sprintf(wb, "],\n"
+ " %sview_latest_values%s: ["
+ , kq, kq);
+
+ i = 0;
+ if(rows) {
+ for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ if(i) buffer_strcat(wb, ", ");
+ i++;
+
+ calculated_number *cn = &r->v[ (0) * r->d ];
+ uint8_t *co = &r->o[ (0) * r->d ];
+
+ if(co[c] & RRDR_EMPTY)
+ buffer_strcat(wb, "null");
+ else
+ buffer_rrd_value(wb, cn[c]);
+ }
+ }
+ if(!i) {
+ rows = 0;
+ buffer_strcat(wb, "null");
+ }
+
+ buffer_sprintf(wb, "],\n"
+ " %sdimensions%s: %d,\n"
+ " %spoints%s: %d,\n"
+ " %sformat%s: %s"
+ , kq, kq, i
+ , kq, kq, rows
+ , kq, kq, sq
+ );
+
+ rrdr_buffer_print_format(wb, format);
+
+ buffer_sprintf(wb, "%s,\n"
+ " %sresult%s: "
+ , sq
+ , kq, kq
+ );
+
+ if(string_value) buffer_strcat(wb, sq);
+ //info("JSONWRAPPER(): %s: END", r->st->id);
+}
+
+void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
+{
+ if(r) {;}
+ if(format) {;}
+
+ char kq[2] = "", // key quote
+ sq[2] = ""; // string quote
+
+ if( options & RRDR_OPTION_GOOGLE_JSON ) {
+ kq[0] = '\0';
+ sq[0] = '\'';
+ }
+ else {
+ kq[0] = '"';
+ sq[0] = '"';
+ }
+
+ if(string_value) buffer_strcat(wb, sq);
+
+ buffer_sprintf(wb, ",\n %smin%s: ", kq, kq);
+ buffer_rrd_value(wb, r->min);
+ buffer_sprintf(wb, ",\n %smax%s: ", kq, kq);
+ buffer_rrd_value(wb, r->max);
+ buffer_strcat(wb, "\n}\n");
+}
+
+#define JSON_DATES_JS 1
+#define JSON_DATES_TIMESTAMP 2
+
+static void rrdr2json(RRDR *r, BUFFER *wb, uint32_t options, int datatable)
+{
+ //info("RRD2JSON(): %s: BEGIN", r->st->id);
+ int row_annotations = 0, dates, dates_with_new = 0;
+ char kq[2] = "", // key quote
+ sq[2] = "", // string quote
+ pre_label[101] = "", // before each label
+ post_label[101] = "", // after each label
+ pre_date[101] = "", // the beginning of line, to the date
+ post_date[101] = "", // closing the date
+ pre_value[101] = "", // before each value
+ post_value[101] = "", // after each value
+ post_line[101] = "", // at the end of each row
+ normal_annotation[201] = "", // default row annotation
+ overflow_annotation[201] = "", // overflow row annotation
+ data_begin[101] = "", // between labels and values
+ finish[101] = ""; // at the end of everything
+
+ if(datatable) {
+ dates = JSON_DATES_JS;
+ if( options & RRDR_OPTION_GOOGLE_JSON ) {
+ kq[0] = '\0';
+ sq[0] = '\'';
+ }
+ else {
+ kq[0] = '"';
+ sq[0] = '"';
+ }
+ row_annotations = 1;
+ snprintf(pre_date, 100, " {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
+ snprintf(post_date, 100, "%s}", sq);
+ snprintf(pre_label, 100, ",\n {%sid%s:%s%s,%slabel%s:%s", kq, kq, sq, sq, kq, kq, sq);
+ snprintf(post_label, 100, "%s,%spattern%s:%s%s,%stype%s:%snumber%s}", sq, kq, kq, sq, sq, kq, kq, sq, sq);
+ snprintf(pre_value, 100, ",{%sv%s:", kq, kq);
+ snprintf(post_value, 100, "}");
+ snprintf(post_line, 100, "]}");
+ snprintf(data_begin, 100, "\n ],\n %srows%s:\n [\n", kq, kq);
+ snprintf(finish, 100, "\n ]\n}");
+
+ snprintf(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);
+ snprintf(normal_annotation, 200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
+
+ buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq, kq, kq);
+ 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);
+ 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);
+ 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);
+
+ // remove the valueobjects flag
+ // google wants its own keys
+ if(options & RRDR_OPTION_OBJECTSROWS)
+ options &= ~RRDR_OPTION_OBJECTSROWS;
+ }
+ else {
+ kq[0] = '"';
+ sq[0] = '"';
+ if((options & RRDR_OPTION_SECONDS) || (options & RRDR_OPTION_MILLISECONDS)) {
+ dates = JSON_DATES_TIMESTAMP;
+ dates_with_new = 0;
+ }
+ else {
+ dates = JSON_DATES_JS;
+ dates_with_new = 1;
+ }
+ if( options & RRDR_OPTION_OBJECTSROWS )
+ snprintf(pre_date, 100, " { ");
+ else
+ snprintf(pre_date, 100, " [ ");
+ snprintf(pre_label, 100, ", \"");
+ snprintf(post_label, 100, "\"");
+ snprintf(pre_value, 100, ", ");
+ if( options & RRDR_OPTION_OBJECTSROWS )
+ snprintf(post_line, 100, "}");
+ else
+ snprintf(post_line, 100, "]");
+ snprintf(data_begin, 100, "],\n %sdata%s:\n [\n", kq, kq);
+ snprintf(finish, 100, "\n ]\n}");
+
+ buffer_sprintf(wb, "{\n %slabels%s: [", kq, kq);
+ buffer_sprintf(wb, "%stime%s", sq, sq);
+ }
+
+ // -------------------------------------------------------------------------
+ // print the JSON header
+
+ long c, i;
+ RRDDIM *rd;
+
+ // print the header lines
+ for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ buffer_strcat(wb, pre_label);
+ buffer_strcat(wb, rd->name);
+ buffer_strcat(wb, post_label);
+ i++;
+ }
+ if(!i) {
+ buffer_strcat(wb, pre_label);
+ buffer_strcat(wb, "no data");
+ buffer_strcat(wb, post_label);
+ }
+
+ // print the begin of row data
+ buffer_strcat(wb, data_begin);
+
+ // if all dimensions are hidden, print a null
+ if(!i) {
+ buffer_strcat(wb, finish);
+ return;
+ }
+
+ long start = 0, end = rrdr_rows(r), step = 1;
+ if((options & RRDR_OPTION_REVERSED)) {
+ start = rrdr_rows(r) - 1;
+ end = -1;
+ step = -1;
+ }
+
+ // for each line in the array
+ calculated_number total = 1;
+ for(i = start; i != end ;i += step) {
+ calculated_number *cn = &r->v[ i * r->d ];
+ uint8_t *co = &r->o[ i * r->d ];
+
+ time_t now = r->t[i];
+
+ if(dates == JSON_DATES_JS) {
+ // generate the local date time
+ struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
+ if(!tm) { error("localtime_r() failed."); continue; }
+
+ if(likely(i != start)) buffer_strcat(wb, ",\n");
+ buffer_strcat(wb, pre_date);
+
+ if( options & RRDR_OPTION_OBJECTSROWS )
+ buffer_sprintf(wb, "%stime%s: ", kq, kq);
+
+ if(dates_with_new)
+ buffer_strcat(wb, "new ");
+
+ buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+ buffer_strcat(wb, post_date);
+
+ if(row_annotations) {
+ // google supports one annotation per row
+ int annotation_found = 0;
+ for(c = 0, rd = r->st->dimensions; rd ;c++, rd = rd->next) {
+ if(co[c] & RRDR_RESET) {
+ buffer_strcat(wb, overflow_annotation);
+ annotation_found = 1;
+ break;
+ }
+ }
+ if(!annotation_found)
+ buffer_strcat(wb, normal_annotation);
+ }
+ }
+ else {
+ // print the timestamp of the line
+ if(likely(i != start)) buffer_strcat(wb, ",\n");
+ buffer_strcat(wb, pre_date);
+
+ if( options & RRDR_OPTION_OBJECTSROWS )
+ buffer_sprintf(wb, "%stime%s: ", kq, kq);
+
+ buffer_rrd_value(wb, (calculated_number)r->t[i]);
+ // in ms
+ if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
+
+ buffer_strcat(wb, post_date);
+ }
+
+ if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+ total = 0;
+ for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+ calculated_number n = cn[c];
+
+ if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+ n = -n;
+
+ total += n;
+ }
+ // prevent a division by zero
+ if(total == 0) total = 1;
+ }
+
+ // for each dimension
+ for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ calculated_number n = cn[c];
+
+ buffer_strcat(wb, pre_value);
+
+ if( options & RRDR_OPTION_OBJECTSROWS )
+ buffer_sprintf(wb, "%s%s%s: ", kq, rd->name, kq);
+
+ if(co[c] & RRDR_EMPTY) {
+ if(options & RRDR_OPTION_NULL2ZERO)
+ buffer_strcat(wb, "0");
+ else
+ buffer_strcat(wb, "null");
+ }
+ else {
+ if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+ n = -n;
+
+ if(unlikely(options & RRDR_OPTION_PERCENTAGE))
+ n = n * 100 / total;
+
+ buffer_rrd_value(wb, n);
+ }
+
+ buffer_strcat(wb, post_value);
+ }
+
+ buffer_strcat(wb, post_line);
+ }
+
+ buffer_strcat(wb, finish);
+ //info("RRD2JSON(): %s: END", r->st->id);
+}
+
+static void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t options, const char *startline, const char *separator, const char *endline, const char *betweenlines)
+{
+ //info("RRD2CSV(): %s: BEGIN", r->st->id);
+ long c, i;
+ RRDDIM *d;
+
+ // print the csv header
+ for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ if(!i) {
+ buffer_strcat(wb, startline);
+ if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+ buffer_strcat(wb, "time");
+ if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+ }
+ buffer_strcat(wb, separator);
+ if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+ buffer_strcat(wb, d->name);
+ if(options & RRDR_OPTION_LABEL_QUOTES) buffer_strcat(wb, "\"");
+ i++;
+ }
+ buffer_strcat(wb, endline);
+
+ if(!i) {
+ // no dimensions present
+ return;
+ }
+
+ long start = 0, end = rrdr_rows(r), step = 1;
+ if((options & RRDR_OPTION_REVERSED)) {
+ start = rrdr_rows(r) - 1;
+ end = -1;
+ step = -1;
+ }
+
+ // for each line in the array
+ calculated_number total = 1;
+ for(i = start; i != end ;i += step) {
+ calculated_number *cn = &r->v[ i * r->d ];
+ uint8_t *co = &r->o[ i * r->d ];
+
+ buffer_strcat(wb, betweenlines);
+ buffer_strcat(wb, startline);
+
+ time_t now = r->t[i];
+
+ if((options & RRDR_OPTION_SECONDS) || (options & RRDR_OPTION_MILLISECONDS)) {
+ // print the timestamp of the line
+ buffer_rrd_value(wb, (calculated_number)now);
+ // in ms
+ if(options & RRDR_OPTION_MILLISECONDS) buffer_strcat(wb, "000");
+ }
+ else {
+ // generate the local date time
+ struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
+ if(!tm) { error("localtime() failed."); continue; }
+ buffer_date(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+ }
+
+ if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+ total = 0;
+ for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+ calculated_number n = cn[c];
+
+ if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+ n = -n;
+
+ total += n;
+ }
+ // prevent a division by zero
+ if(total == 0) total = 1;
+ }
+
+ // for each dimension
+ for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ buffer_strcat(wb, separator);
+
+ calculated_number n = cn[c];
+
+ if(co[c] & RRDR_EMPTY) {
+ if(options & RRDR_OPTION_NULL2ZERO)
+ buffer_strcat(wb, "0");
+ else
+ buffer_strcat(wb, "null");
+ }
+ else {
+ if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+ n = -n;
+
+ if(unlikely(options & RRDR_OPTION_PERCENTAGE))
+ n = n * 100 / total;
+
+ buffer_rrd_value(wb, n);
+ }
+ }
+
+ buffer_strcat(wb, endline);
+ }
+ //info("RRD2CSV(): %s: END", r->st->id);
+}
+
+static void rrdr2ssv(RRDR *r, BUFFER *wb, uint32_t options, const char *prefix, const char *separator, const char *suffix)
+{
+ //info("RRD2SSV(): %s: BEGIN", r->st->id);
+ long c, i;
+ RRDDIM *d;
+
+ buffer_strcat(wb, prefix);
+ long start = 0, end = rrdr_rows(r), step = 1;
+ if((options & RRDR_OPTION_REVERSED)) {
+ start = rrdr_rows(r) - 1;
+ end = -1;
+ step = -1;
+ }
+
+ // for each line in the array
+ calculated_number total = 1;
+ for(i = start; i != end ;i += step) {
+
+ calculated_number *cn = &r->v[ i * r->d ];
+ uint8_t *co = &r->o[ i * r->d ];
+
+ calculated_number sum = 0, min = 0, max = 0, v;
+ int all_null = 1, init = 1;
+
+ if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
+ total = 0;
+ for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+ calculated_number n = cn[c];
+
+ if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+ n = -n;
+
+ total += n;
+ }
+ // prevent a division by zero
+ if(total == 0) total = 1;
+ }
+
+ // for each dimension
+ for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+ if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
+
+ calculated_number n = cn[c];
+
+ if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
+ n = -n;
+
+ if(unlikely(options & RRDR_OPTION_PERCENTAGE))
+ n = n * 100 / total;
+
+ if(unlikely(init)) {
+ if(n > 0) {
+ min = 0;
+ max = n;
+ }
+ else {
+ min = n;
+ max = 0;
+ }
+ init = 0;
+ }
+
+ if(likely(!(co[c] & RRDR_EMPTY))) {
+ all_null = 0;
+ sum += n;
+ }
+
+ if(n < min) min = n;
+ if(n > max) max = n;
+ }
+
+ if(likely(i != start))
+ buffer_strcat(wb, separator);
+
+ if(all_null) {
+ if(options & RRDR_OPTION_NULL2ZERO)
+ buffer_strcat(wb, "0");
+ else
+ buffer_strcat(wb, "null");
+ }
+ else {
+ if(options & RRDR_OPTION_MIN2MAX)
+ v = max - min;
+ else
+ v = sum;
+
+ if(likely(i != start)) {
+ if(r->min > v) r->min = v;
+ if(r->max < v) r->max = v;
+ }
+ else {
+ r->min = v;
+ r->max = v;
+ }
+
+ buffer_rrd_value(wb, v);
+ }
+ }
+ buffer_strcat(wb, suffix);
+ //info("RRD2SSV(): %s: END", r->st->id);
+}
+
+inline static calculated_number *rrdr_line_values(RRDR *r)
+{
+ return &r->v[ r->c * r->d ];
+}
+
+inline static uint8_t *rrdr_line_options(RRDR *r)
+{
+ return &r->o[ r->c * r->d ];
+}
+
+inline static int rrdr_line_init(RRDR *r, time_t t)
+{
+ r->c++;
+
+ if(unlikely(r->c >= r->n)) {
+ error("requested to step above RRDR size for chart %s", r->st->name);
+ r->c = r->n - 1;
+ }
+
+ // save the time
+ r->t[r->c] = t;
+
+ return 1;
+}
+
+inline static void rrdr_lock_rrdset(RRDR *r) {
+ if(unlikely(!r)) {
+ error("NULL value given!");
+ return;
+ }
+
+ pthread_rwlock_rdlock(&r->st->rwlock);
+ r->has_st_lock = 1;
+}
+
+inline static void rrdr_unlock_rrdset(RRDR *r) {
+ if(unlikely(!r)) {
+ error("NULL value given!");
+ return;
+ }
+
+ if(likely(r->has_st_lock)) {
+ pthread_rwlock_unlock(&r->st->rwlock);
+ r->has_st_lock = 0;
+ }
+}
+
+inline static void rrdr_free(RRDR *r)
+{
+ if(unlikely(!r)) {
+ error("NULL value given!");
+ return;
+ }
+
+ rrdr_unlock_rrdset(r);
+ if(likely(r->t)) free(r->t);
+ if(likely(r->v)) free(r->v);
+ if(likely(r->o)) free(r->o);
+ if(likely(r->od)) free(r->od);
+ free(r);
+}
+
+inline void rrdr_done(RRDR *r)
+{
+ r->rows = r->c + 1;
+ r->c = 0;
+}
+
+static RRDR *rrdr_create(RRDSET *st, long n)
+{
+ if(unlikely(!st)) {
+ error("NULL value given!");
+ return NULL;
+ }
+
+ RRDR *r = calloc(1, sizeof(RRDR));
+ if(unlikely(!r)) goto cleanup;
+
+ r->st = st;
+
+ rrdr_lock_rrdset(r);
+
+ RRDDIM *rd;
+ for(rd = st->dimensions ; rd ; rd = rd->next) r->d++;
+
+ r->n = n;
+
+ r->t = malloc(n * sizeof(time_t));
+ if(unlikely(!r->t)) goto cleanup;
+
+ r->v = malloc(n * r->d * sizeof(calculated_number));
+ if(unlikely(!r->v)) goto cleanup;
+
+ r->o = malloc(n * r->d * sizeof(uint8_t));
+ if(unlikely(!r->o)) goto cleanup;
+
+ r->od = malloc(r->d * sizeof(uint8_t));
+ if(unlikely(!r->od)) goto cleanup;
+
+ // set the hidden flag on hidden dimensions
+ int c;
+ for(c = 0, rd = st->dimensions ; rd ; c++, rd = rd->next) {
+ if(unlikely(rd->flags & RRDDIM_FLAG_HIDDEN)) r->od[c] = RRDR_HIDDEN;
+ else r->od[c] = 0;
+ }
+
+ r->c = -1;
+
+ r->group = 1;
+ r->update_every = 1;
+
+ return r;
+
+cleanup:
+ error("Cannot allocate RRDR memory for %d entries", n);
+ if(likely(r)) rrdr_free(r);
+ return NULL;
+}
+
+RRDR *rrd2rrdr(RRDSET *st, long points, long long after, long long before, int group_method)
+{
+ int debug = st->debug;
+ int absolute_period_requested = -1;
+
+ time_t first_entry_t = rrdset_first_entry_t(st);
+ time_t last_entry_t = rrdset_last_entry_t(st);
+
+ if(before == 0 && after == 0) {
+ before = last_entry_t;
+ after = first_entry_t;
+ absolute_period_requested = 0;
+ }
+
+ // allow relative for before and after
+ if(before <= st->update_every * st->entries) {
+ before = last_entry_t + before;
+ absolute_period_requested = 0;
+ }
+
+ if(after <= st->update_every * st->entries) {
+ after = last_entry_t + after;
+ absolute_period_requested = 0;
+ }
+
+ if(absolute_period_requested == -1)
+ absolute_period_requested = 1;
+
+ // make sure they are within our timeframe
+ if(before > last_entry_t) before = last_entry_t;
+ if(before < first_entry_t) before = first_entry_t;
+
+ if(after > last_entry_t) after = last_entry_t;
+ if(after < first_entry_t) after = first_entry_t;
+
+ // check if they are upside down
+ if(after > before) {
+ time_t tmp = before;
+ before = after;
+ after = tmp;
+ }
+
+ // the duration of the chart
+ time_t duration = before - after;
+ long available_points = duration / st->update_every;
+
+ if(duration <= 0 || available_points <= 0)
+ return rrdr_create(st, 1);
+
+ // check the wanted points
+ if(points < 0) points = -points;
+ if(points > available_points) points = available_points;
+ if(points == 0) points = available_points;
+
+ // calculate proper grouping of source data
+ long group = available_points / points;
+ if(group <= 0) group = 1;
+
+ // round group to the closest integer
+ if(available_points % points > points / 2) group++;
+
+ time_t after_new = after - (after % (group * st->update_every));
+ time_t before_new = before - (before % (group * st->update_every));
+ long points_new = (before_new - after_new) / st->update_every / group;
+
+ // find the starting and ending slots in our round robin db
+ long start_at_slot = rrdset_time2slot(st, before_new),
+ stop_at_slot = rrdset_time2slot(st, after_new);
+
+#ifdef NETDATA_INTERNAL_CHECKS
+ if(after_new < first_entry_t) {
+ error("after_new %u is too small, minimum %u", after_new, first_entry_t);
+ }
+ if(after_new > last_entry_t) {
+ error("after_new %u is too big, maximum %u", after_new, last_entry_t);
+ }
+ if(before_new < first_entry_t) {
+ error("before_new %u is too small, minimum %u", before_new, first_entry_t);
+ }
+ if(before_new > last_entry_t) {
+ error("before_new %u is too big, maximum %u", before_new, last_entry_t);
+ }
+ if(start_at_slot < 0 || start_at_slot >= st->entries) {
+ error("start_at_slot is invalid %ld, expected %ld to %ld", start_at_slot, 0, st->entries - 1);
+ }
+ if(stop_at_slot < 0 || stop_at_slot >= st->entries) {
+ error("stop_at_slot is invalid %ld, expected %ld to %ld", stop_at_slot, 0, st->entries - 1);
+ }
+ if(points_new > (before_new - after_new) / group / st->update_every + 1) {
+ error("points_new %ld is more than points %ld", points_new, (before_new - after_new) / group / st->update_every + 1);
+ }
+#endif
+
+ //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);
+
+ after = after_new;
+ before = before_new;
+ duration = before - after;
+ points = points_new;
+
+ // Now we have:
+ // before = the end time of the calculation
+ // after = the start time of the calculation
+ // duration = the duration of the calculation
+ // group = the number of source points to aggregate / group together
+ // method = the method of grouping source points
+ // points = the number of points to generate
+
+
+ // -------------------------------------------------------------------------
+ // initialize our result set
+
+ RRDR *r = rrdr_create(st, points);
+ if(!r) {
+#ifdef NETDATA_INTERNAL_CHECKS
+ error("Cannot create RRDR for %s, after=%u, before=%u, duration=%u, points=%d", st->id, after, before, duration, points);
+#endif
+ return NULL;
+ }
+ if(!r->d) {
+#ifdef NETDATA_INTERNAL_CHECKS
+ error("Returning empty RRDR (no dimensions in RRDSET) for %s, after=%u, before=%u, duration=%u, points=%d", st->id, after, before, duration, points);
+#endif
+ return r;
+ }
+
+ if(absolute_period_requested == 1)
+ r->result_options |= RRDR_RESULT_OPTION_ABSOLUTE;
+ else
+ r->result_options |= RRDR_RESULT_OPTION_RELATIVE;
+
+ // find how many dimensions we have
+ long dimensions = r->d;
+
+
+ // -------------------------------------------------------------------------
+ // checks for debugging
+
+ if(debug) debug(D_RRD_STATS, "INFO %s first_t: %lu, last_t: %lu, all_duration: %lu, after: %lu, before: %lu, duration: %lu, points: %ld, group: %ld"
+ , st->id
+ , first_entry_t
+ , last_entry_t
+ , last_entry_t - first_entry_t
+ , after
+ , before
+ , duration
+ , points
+ , group
+ );
+
+
+ // -------------------------------------------------------------------------
+ // temp arrays for keeping values per dimension
+
+ calculated_number group_values[dimensions]; // keep sums when grouping
+ long group_counts[dimensions]; // keep the number of values added to group_values
+ uint8_t group_options[dimensions];
+ uint8_t found_non_zero[dimensions];
+
+
+ // initialize them
+ RRDDIM *rd;
+ long c;
+ for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
+ group_values[c] = 0;
+ group_counts[c] = 0;
+ group_options[c] = 0;
+ found_non_zero[c] = 0;
+ }
+
+
+ // -------------------------------------------------------------------------
+ // the main loop
+
+ time_t now = rrdset_slot2time(st, start_at_slot),
+ dt = st->update_every,
+ group_start_t = 0;
+
+ if(unlikely(debug)) debug(D_RRD_STATS, "BEGIN %s after_t: %lu (stop_at_t: %ld), before_t: %lu (start_at_t: %ld), start_t(now): %lu, current_entry: %ld, entries: %ld"
+ , st->id
+ , after
+ , stop_at_slot
+ , before
+ , start_at_slot
+ , now
+ , st->current_entry
+ , st->entries
+ );
+
+ r->group = group;
+ r->update_every = group * st->update_every;
+ r->before = now;
+ r->after = now;
+
+ //info("RRD2RRDR(): %s: STARTING", st->id);
+
+ long slot = start_at_slot, counter = 0, stop_now = 0, added = 0, group_count = 0, add_this = 0;
+ for(; !stop_now ; now -= dt, slot--, counter++) {
+ if(unlikely(slot < 0)) slot = st->entries - 1;
+ if(unlikely(slot == stop_at_slot)) stop_now = counter;
+
+ if(unlikely(debug)) debug(D_RRD_STATS, "ROW %s slot: %ld, entries_counter: %ld, group_count: %ld, added: %ld, now: %lu, %s %s"
+ , st->id
+ , slot
+ , counter
+ , group_count + 1
+ , added
+ , now
+ , (group_count + 1 == group)?"PRINT":" - "
+ , (now >= after && now <= before)?"RANGE":" - "
+ );
+
+ // make sure we return data in the proper time range
+ if(unlikely(now > before)) continue;
+ if(unlikely(now < after)) break;
+
+ if(unlikely(group_count == 0)) {
+ group_start_t = now;
+ }
+ group_count++;
+
+ if(unlikely(group_count == group)) {
+ if(unlikely(added >= points)) break;
+ add_this = 1;
+ }
+
+ // do the calculations
+ for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
+ storage_number n = rd->values[slot];
+ if(unlikely(!does_storage_number_exist(n))) continue;
+
+ group_counts[c]++;
+
+ calculated_number value = unpack_storage_number(n);
+ if(likely(value != 0.0)) {
+ group_options[c] |= RRDR_NONZERO;
+ found_non_zero[c] = 1;
+ }
+
+ if(unlikely(did_storage_number_reset(n)))
+ group_options[c] |= RRDR_RESET;
+
+ switch(group_method) {
+ case GROUP_MAX:
+ if(unlikely(abs(value) > abs(group_values[c])))
+ group_values[c] = value;
+ break;
+
+ default:
+ case GROUP_SUM:
+ case GROUP_AVERAGE:
+ group_values[c] += value;
+ break;
+ }
+ }
+
+ // added it
+ if(unlikely(add_this)) {
+ if(unlikely(!rrdr_line_init(r, group_start_t))) break;
+
+ r->after = now;
+
+ calculated_number *cn = rrdr_line_values(r);
+ uint8_t *co = rrdr_line_options(r);
+
+ for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
+
+ // update the dimension options
+ if(likely(found_non_zero[c])) r->od[c] |= RRDR_NONZERO;
+
+ // store the specific point options
+ co[c] = group_options[c];
+
+ // store the value
+ if(unlikely(group_counts[c] == 0)) {
+ cn[c] = 0.0;
+ co[c] |= RRDR_EMPTY;
+ }
+ else if(unlikely(group_method == GROUP_AVERAGE)) {
+ cn[c] = group_values[c] / group_counts[c];
+ }
+ else {
+ cn[c] = group_values[c];
+ }
+
+ if(cn[c] < r->min) r->min = cn[c];
+ if(cn[c] > r->max) r->max = cn[c];
+
+ // reset them for the next loop
+ group_values[c] = 0;
+ group_counts[c] = 0;
+ group_options[c] = 0;
+ }
+
+ added++;
+ group_count = 0;
+ add_this = 0;
+ }
+ }
+
+ rrdr_done(r);
+ //info("RRD2RRDR(): %s: END %ld loops made, %ld points generated", st->id, counter, rrdr_rows(r));
+ //error("SHIFT: %s: wanted %ld points, got %ld", st->id, points, rrdr_rows(r));
+ return r;
+}
+
+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)
+{
+ RRDR *r = rrd2rrdr(st, points, after, before, group_method);
+ if(!r) {
+ buffer_strcat(wb, "Cannot generate output with these parameters on this chart.");
+ return 500;
+ }
+
+ if(r->result_options & RRDR_RESULT_OPTION_RELATIVE)
+ wb->options |= WB_CONTENT_NO_CACHEABLE;
+ else if(r->result_options & RRDR_RESULT_OPTION_ABSOLUTE)
+ wb->options |= WB_CONTENT_CACHEABLE;
+
+ options = rrdr_check_options(r, options, (dimensions)?buffer_tostring(dimensions):NULL);
+
+ if(dimensions)
+ rrdr_disable_not_selected_dimensions(r, buffer_tostring(dimensions));
+
+ if(latest_timestamp && rrdr_rows(r) > 0)
+ *latest_timestamp = r->before;
+
+ switch(format) {
+ case DATASOURCE_SSV:
+ if(options & RRDR_OPTION_JSON_WRAP) {
+ wb->contenttype = CT_APPLICATION_JSON;
+ rrdr_json_wrapper_begin(r, wb, format, options, 1);
+ rrdr2ssv(r, wb, options, "", " ", "");
+ rrdr_json_wrapper_end(r, wb, format, options, 1);
+ }
+ else {
+ wb->contenttype = CT_TEXT_PLAIN;
+ rrdr2ssv(r, wb, options, "", " ", "");
+ }
+ break;
+
+ case DATASOURCE_SSV_COMMA:
+ if(options & RRDR_OPTION_JSON_WRAP) {
+ wb->contenttype = CT_APPLICATION_JSON;
+ rrdr_json_wrapper_begin(r, wb, format, options, 1);
+ rrdr2ssv(r, wb, options, "", ",", "");
+ rrdr_json_wrapper_end(r, wb, format, options, 1);
+ }
+ else {
+ wb->contenttype = CT_TEXT_PLAIN;
+ rrdr2ssv(r, wb, options, "", ",", "");
+ }
+ break;
+
+ case DATASOURCE_JS_ARRAY:
+ if(options & RRDR_OPTION_JSON_WRAP) {
+ wb->contenttype = CT_APPLICATION_JSON;
+ rrdr_json_wrapper_begin(r, wb, format, options, 0);
+ rrdr2ssv(r, wb, options, "[", ",", "]");
+ rrdr_json_wrapper_end(r, wb, format, options, 0);
+ }
+ else {
+ wb->contenttype = CT_APPLICATION_JSON;
+ rrdr2ssv(r, wb, options, "[", ",", "]");
+ }
+ break;
+
+ case DATASOURCE_CSV:
+ if(options & RRDR_OPTION_JSON_WRAP) {
+ wb->contenttype = CT_APPLICATION_JSON;
+ rrdr_json_wrapper_begin(r, wb, format, options, 1);
+ rrdr2csv(r, wb, options, "", ",", "\\n", "");
+ rrdr_json_wrapper_end(r, wb, format, options, 1);
+ }
+ else {
+ wb->contenttype = CT_TEXT_PLAIN;
+ rrdr2csv(r, wb, options, "", ",", "\r\n", "");
+ }
+ break;
+
+ case DATASOURCE_CSV_JSON_ARRAY:
+ wb->contenttype = CT_APPLICATION_JSON;
+ if(options & RRDR_OPTION_JSON_WRAP) {
+ rrdr_json_wrapper_begin(r, wb, format, options, 0);
+ buffer_strcat(wb, "[\n");
+ rrdr2csv(r, wb, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
+ buffer_strcat(wb, "\n]");
+ rrdr_json_wrapper_end(r, wb, format, options, 0);
+ }
+ else {
+ wb->contenttype = CT_TEXT_PLAIN;
+ buffer_strcat(wb, "[\n");
+ rrdr2csv(r, wb, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
+ buffer_strcat(wb, "\n]");
+ }
+ break;
+
+ case DATASOURCE_TSV:
+ if(options & RRDR_OPTION_JSON_WRAP) {
+ wb->contenttype = CT_APPLICATION_JSON;
+ rrdr_json_wrapper_begin(r, wb, format, options, 1);
+ rrdr2csv(r, wb, options, "", "\t", "\\n", "");
+ rrdr_json_wrapper_end(r, wb, format, options, 1);
+ }
+ else {
+ wb->contenttype = CT_TEXT_PLAIN;
+ rrdr2csv(r, wb, options, "", "\t", "\r\n", "");
+ }
+ break;
+
+ case DATASOURCE_HTML:
+ if(options & RRDR_OPTION_JSON_WRAP) {
+ wb->contenttype = CT_APPLICATION_JSON;
+ rrdr_json_wrapper_begin(r, wb, format, options, 1);
+ buffer_strcat(wb, "<html>\\n<center>\\n<table border=\\\"0\\\" cellpadding=\\\"5\\\" cellspacing=\\\"5\\\">\\n");
+ rrdr2csv(r, wb, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "");
+ buffer_strcat(wb, "</table>\\n</center>\\n</html>\\n");
+ rrdr_json_wrapper_end(r, wb, format, options, 1);
+ }
+ else {
+ wb->contenttype = CT_TEXT_HTML;
+ buffer_strcat(wb, "<html>\n<center>\n<table border=\"0\" cellpadding=\"5\" cellspacing=\"5\">\n");
+ rrdr2csv(r, wb, options, "<tr><td>", "</td><td>", "</td></tr>\n", "");
+ buffer_strcat(wb, "</table>\n</center>\n</html>\n");
+ }
+ break;
+
+ case DATASOURCE_DATATABLE_JSONP:
+ wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
+
+ if(options & RRDR_OPTION_JSON_WRAP)
+ rrdr_json_wrapper_begin(r, wb, format, options, 0);
+
+ rrdr2json(r, wb, options, 1);
+
+ if(options & RRDR_OPTION_JSON_WRAP)
+ rrdr_json_wrapper_end(r, wb, format, options, 0);
+ break;
+
+ case DATASOURCE_DATATABLE_JSON:
+ wb->contenttype = CT_APPLICATION_JSON;
+
+ if(options & RRDR_OPTION_JSON_WRAP)
+ rrdr_json_wrapper_begin(r, wb, format, options, 0);
+
+ rrdr2json(r, wb, options, 1);
+
+ if(options & RRDR_OPTION_JSON_WRAP)
+ rrdr_json_wrapper_end(r, wb, format, options, 0);
+ break;
+
+ case DATASOURCE_JSONP:
+ wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
+ if(options & RRDR_OPTION_JSON_WRAP)
+ rrdr_json_wrapper_begin(r, wb, format, options, 0);
+
+ rrdr2json(r, wb, options, 0);
+
+ if(options & RRDR_OPTION_JSON_WRAP)
+ rrdr_json_wrapper_end(r, wb, format, options, 0);
+ break;
+
+ case DATASOURCE_JSON:
+ default:
+ wb->contenttype = CT_APPLICATION_JSON;
+
+ if(options & RRDR_OPTION_JSON_WRAP)
+ rrdr_json_wrapper_begin(r, wb, format, options, 0);
+
+ rrdr2json(r, wb, options, 0);
+
+ if(options & RRDR_OPTION_JSON_WRAP)
+ rrdr_json_wrapper_end(r, wb, format, options, 0);
+ break;
+ }
+
+ rrdr_free(r);
+ return 200;
+}
+
+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)
+{
+ int c;
+ pthread_rwlock_rdlock(&st->rwlock);
+
+
+ // -------------------------------------------------------------------------
+ // switch from JSON to google JSON
+
+ char kq[2] = "\"";
+ char sq[2] = "\"";
+ switch(type) {
+ case DATASOURCE_DATATABLE_JSON:
+ case DATASOURCE_DATATABLE_JSONP:
+ kq[0] = '\0';
+ sq[0] = '\'';
+ break;
+
+ case DATASOURCE_JSON:
+ default:
+ break;
+ }
+
+
+ // -------------------------------------------------------------------------
+ // validate the parameters
+
+ if(points < 1) points = 1;
+ if(group < 1) group = 1;
+
+ if(before == 0 || before > rrdset_last_entry_t(st)) before = rrdset_last_entry_t(st);
+ if(after == 0 || after < rrdset_first_entry_t(st)) after = rrdset_first_entry_t(st);
+
+ // ---
+
+ // our return value (the last timestamp printed)
+ // this is required to detect re-transmit in google JSONP
+ time_t last_timestamp = 0;
+
+
+ // -------------------------------------------------------------------------
+ // find how many dimensions we have
+
+ int dimensions = 0;
+ RRDDIM *rd;
+ for( rd = st->dimensions ; rd ; rd = rd->next) dimensions++;
+ if(!dimensions) {
+ pthread_rwlock_unlock(&st->rwlock);
+ buffer_strcat(wb, "No dimensions yet.");
+ return 0;
+ }
+
+
+ // -------------------------------------------------------------------------
+ // prepare various strings, to speed up the loop
+
+ char overflow_annotation[201]; snprintf(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);
+ char normal_annotation[201]; snprintf(normal_annotation, 200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
+ char pre_date[51]; snprintf(pre_date, 50, " {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
+ char post_date[21]; snprintf(post_date, 20, "%s}", sq);
+ char pre_value[21]; snprintf(pre_value, 20, ",{%sv%s:", kq, kq);
+ char post_value[21]; snprintf(post_value, 20, "}");
+
+
+ // -------------------------------------------------------------------------
+ // checks for debugging
+
+ if(st->debug) {
+ debug(D_RRD_STATS, "%s first_entry_t = %lu, last_entry_t = %lu, duration = %lu, after = %lu, before = %lu, duration = %lu, entries_to_show = %lu, group = %lu"
+ , st->id
+ , rrdset_first_entry_t(st)
+ , rrdset_last_entry_t(st)
+ , rrdset_last_entry_t(st) - rrdset_first_entry_t(st)
+ , after
+ , before
+ , before - after
+ , points
+ , group
+ );
+
+ if(before < after)
+ debug(D_RRD_STATS, "WARNING: %s The newest value in the database (%lu) is earlier than the oldest (%lu)", st->name, before, after);
+
+ if((before - after) > st->entries * st->update_every)
+ debug(D_RRD_STATS, "WARNING: %s The time difference between the oldest and the newest entries (%lu) is higher than the capacity of the database (%lu)", st->name, before - after, st->entries * st->update_every);
+ }
+
+
+ // -------------------------------------------------------------------------
+ // temp arrays for keeping values per dimension
+
+ calculated_number group_values[dimensions]; // keep sums when grouping
+ int print_hidden[dimensions]; // keep hidden flags
+ int found_non_zero[dimensions];
+ int found_non_existing[dimensions];
+
+ // initialize them
+ for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
+ group_values[c] = 0;
+ print_hidden[c] = (rd->flags & RRDDIM_FLAG_HIDDEN)?1:0;
+ found_non_zero[c] = 0;
+ found_non_existing[c] = 0;
+ }
+
+
+ // 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);
+ // rrd2array(st, entries_to_show, before - (st->update_every * group * entries_to_show), before, group_method, only_non_zero);
+ // rrd2rrdr(st, entries_to_show, before - (st->update_every * group * entries_to_show), before, group_method);
+
+ // -------------------------------------------------------------------------
+ // remove dimensions that contain only zeros
+
+ int max_loop = 1;
+ if(only_non_zero) max_loop = 2;
+
+ for(; max_loop ; max_loop--) {
+
+ // -------------------------------------------------------------------------
+ // print the JSON header
+
+ buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
+ 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);
+ 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);
+ 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);
+
+ // print the header for each dimension
+ // and update the print_hidden array for the dimensions that should be hidden
+ int pc = 0;
+ for( rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
+ if(!print_hidden[c]) {
+ pc++;
+ 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);
+ }
+ }
+ if(!pc) {
+ 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);
+ }
+
+ // print the begin of row data
+ buffer_sprintf(wb, "\n ],\n %srows%s:\n [\n", kq, kq);
+
+
+ // -------------------------------------------------------------------------
+ // the main loop
+
+ int annotate_reset = 0;
+ int annotation_count = 0;
+
+ long t = rrdset_time2slot(st, before),
+ stop_at_t = rrdset_time2slot(st, after),
+ stop_now = 0;
+
+ t -= t % group;
+
+ time_t now = rrdset_slot2time(st, t),
+ dt = st->update_every;
+
+ long count = 0, printed = 0, group_count = 0;
+ last_timestamp = 0;
+
+ if(st->debug) debug(D_RRD_STATS, "%s: REQUEST after:%lu before:%lu, points:%d, group:%d, CHART cur:%ld first: %lu last:%lu, CALC start_t:%ld, stop_t:%ld"
+ , st->id
+ , after
+ , before
+ , points
+ , group
+ , st->current_entry
+ , rrdset_first_entry_t(st)
+ , rrdset_last_entry_t(st)
+ , t
+ , stop_at_t
+ );
+
+ long counter = 0;
+ for(; !stop_now ; now -= dt, t--, counter++) {
+ if(t < 0) t = st->entries - 1;
+ if(t == stop_at_t) stop_now = counter;
+
+ int print_this = 0;
+
+ if(st->debug) debug(D_RRD_STATS, "%s t = %ld, count = %ld, group_count = %ld, printed = %ld, now = %lu, %s %s"
+ , st->id
+ , t
+ , count + 1
+ , group_count + 1
+ , printed
+ , now
+ , (group_count + 1 == group)?"PRINT":" - "
+ , (now >= after && now <= before)?"RANGE":" - "
+ );
+
+
+ // make sure we return data in the proper time range
+ if(now > before) continue;
+ if(now < after) break;
+
+ //if(rrdset_slot2time(st, t) != now)
+ // 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));
+
+ count++;
+ group_count++;
+
+ // check if we have to print this now
+ if(group_count == group) {
+ if(printed >= points) {
+ // debug(D_RRD_STATS, "Already printed all rows. Stopping.");
+ break;
+ }
+
+ // generate the local date time
+ struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
+ if(!tm) { error("localtime() failed."); continue; }
+ if(now > last_timestamp) last_timestamp = now;
+
+ if(printed) buffer_strcat(wb, "]},\n");
+ buffer_strcat(wb, pre_date);
+ buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+ buffer_strcat(wb, post_date);
+
+ print_this = 1;
+ }
+
+ // do the calculations
+ for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
+ storage_number n = rd->values[t];
+ calculated_number value = unpack_storage_number(n);
+
+ if(!does_storage_number_exist(n)) {
+ value = 0.0;
+ found_non_existing[c]++;
+ }
+ if(did_storage_number_reset(n)) annotate_reset = 1;
+
+ switch(group_method) {
+ case GROUP_MAX:
+ if(abs(value) > abs(group_values[c])) group_values[c] = value;
+ break;
+
+ case GROUP_SUM:
+ group_values[c] += value;
+ break;
+
+ default:
+ case GROUP_AVERAGE:
+ group_values[c] += value;
+ if(print_this) group_values[c] /= ( group_count - found_non_existing[c] );
+ break;
+ }
+ }
+
+ if(print_this) {
+ if(annotate_reset) {
+ annotation_count++;
+ buffer_strcat(wb, overflow_annotation);
+ annotate_reset = 0;
+ }
+ else
+ buffer_strcat(wb, normal_annotation);
+
+ pc = 0;
+ for(c = 0 ; c < dimensions ; c++) {
+ if(found_non_existing[c] == group_count) {
+ // all entries are non-existing
+ pc++;
+ buffer_strcat(wb, pre_value);
+ buffer_strcat(wb, "null");
+ buffer_strcat(wb, post_value);
+ }
+ else if(!print_hidden[c]) {
+ pc++;
+ buffer_strcat(wb, pre_value);
+ buffer_rrd_value(wb, group_values[c]);
+ buffer_strcat(wb, post_value);
+
+ if(group_values[c]) found_non_zero[c]++;
+ }
+
+ // reset them for the next loop
+ group_values[c] = 0;
+ found_non_existing[c] = 0;
+ }
+
+ // if all dimensions are hidden, print a null
+ if(!pc) {
+ buffer_strcat(wb, pre_value);
+ buffer_strcat(wb, "null");
+ buffer_strcat(wb, post_value);
+ }
+
+ printed++;
+ group_count = 0;
+ }
+ }
+
+ if(printed) buffer_strcat(wb, "]}");
+ buffer_strcat(wb, "\n ]\n}\n");
+
+ if(only_non_zero && max_loop > 1) {
+ int changed = 0;
+ for(rd = st->dimensions, c = 0 ; rd && c < dimensions ; rd = rd->next, c++) {
+ group_values[c] = 0;
+ found_non_existing[c] = 0;
+
+ if(!print_hidden[c] && !found_non_zero[c]) {
+ changed = 1;
+ print_hidden[c] = 1;
+ }
+ }
+
+ if(changed) buffer_flush(wb);
+ else break;
+ }
+ else break;
+
+ } // max_loop
+
+ debug(D_RRD_STATS, "RRD_STATS_JSON: %s total %ld bytes", st->name, wb->len);
+
+ pthread_rwlock_unlock(&st->rwlock);
+ return last_timestamp;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 23:22:52 +0000