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-rw-r--r--web/api/formatters/json_wrapper.c210
1 files changed, 210 insertions, 0 deletions
diff --git a/web/api/formatters/json_wrapper.c b/web/api/formatters/json_wrapper.c
new file mode 100644
index 000000000..253883568
--- /dev/null
+++ b/web/api/formatters/json_wrapper.c
@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "json_wrapper.h"
+
+void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value) {
+ rrdset_check_rdlock(r->st);
+
+ 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, (uint32_t)rrdset_first_entry_t(r->st)
+ , kq, kq, (uint32_t)rrdset_last_entry_t(r->st)
+ , kq, kq, (uint32_t)r->before
+ , kq, kq, (uint32_t)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_DIMENSION_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_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_DIMENSION_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_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_DIMENSION_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_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) {
+ calculated_number total = 1;
+
+ 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 *cn = &r->v[ (rrdr_rows(r) - 1) * r->d ];
+ 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(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+ if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
+ if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
+
+ if(i) buffer_strcat(wb, ", ");
+ i++;
+
+ calculated_number *cn = &r->v[ (rrdr_rows(r) - 1) * r->d ];
+ RRDR_VALUE_FLAGS *co = &r->o[ (rrdr_rows(r) - 1) * r->d ];
+ calculated_number n = cn[c];
+
+ if(co[c] & RRDR_VALUE_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);
+ }
+ }
+ }
+ if(!i) {
+ rows = 0;
+ buffer_strcat(wb, "null");
+ }
+
+ buffer_sprintf(wb, "],\n"
+ " %sdimensions%s: %ld,\n"
+ " %spoints%s: %ld,\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) {
+ (void)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");
+}
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