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// SPDX-License-Identifier: GPL-3.0-or-later
#include "rrdset2json.h"
void chart_labels2json(RRDSET *st, BUFFER *wb, size_t indentation)
{
if(unlikely(!st->rrdlabels))
return;
char tabs[11];
if (indentation > 10)
indentation = 10;
tabs[0] = '\0';
while (indentation) {
strcat(tabs, "\t\t");
indentation--;
}
rrdlabels_to_buffer(st->rrdlabels, wb, tabs, ":", "\"", ",\n", NULL, NULL, NULL, NULL);
buffer_strcat(wb, "\n");
}
// generate JSON for the /api/v1/chart API call
void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used, int skip_volatile) {
time_t first_entry_t = rrdset_first_entry_t(st);
time_t last_entry_t = rrdset_last_entry_t(st);
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 (%s)\",\n"
"\t\t\t\"priority\": %ld,\n"
"\t\t\t\"plugin\": \"%s\",\n"
"\t\t\t\"module\": \"%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",
rrdset_id(st),
rrdset_name(st),
rrdset_parts_type(st),
rrdset_family(st),
rrdset_context(st),
rrdset_title(st),
rrdset_name(st),
st->priority,
rrdset_plugin_name(st),
rrdset_module_name(st),
rrdset_units(st),
rrdset_name(st),
rrdset_type_name(st->chart_type));
if (likely(!skip_volatile))
buffer_sprintf(
wb,
"\t\t\t\"duration\": %"PRId64",\n",
(int64_t)(last_entry_t - first_entry_t + st->update_every) //st->entries * st->update_every
);
buffer_sprintf(
wb,
"\t\t\t\"first_entry\": %"PRId64",\n",
(int64_t)first_entry_t //rrdset_first_entry_t(st)
);
if (likely(!skip_volatile))
buffer_sprintf(
wb,
"\t\t\t\"last_entry\": %"PRId64",\n",
(int64_t)last_entry_t //rrdset_last_entry_t(st)
);
buffer_sprintf(
wb,
"\t\t\t\"update_every\": %d,\n"
"\t\t\t\"dimensions\": {\n",
st->update_every);
unsigned long memory = sizeof(RRDSET) + st->memsize;
size_t dimensions = 0;
RRDDIM *rd;
rrddim_foreach_read(rd, st) {
if(rrddim_option_check(rd, RRDDIM_OPTION_HIDDEN) || rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE)) continue;
memory += sizeof(RRDDIM) + rd->memsize;
if (dimensions)
buffer_strcat(wb, ",\n\t\t\t\t\"");
else
buffer_strcat(wb, "\t\t\t\t\"");
buffer_strcat_jsonescape(wb, rrddim_id(rd));
buffer_strcat(wb, "\": { \"name\": \"");
buffer_strcat_jsonescape(wb, rrddim_name(rd));
buffer_strcat(wb, "\" }");
dimensions++;
}
rrddim_foreach_done(rd);
if(dimensions_count) *dimensions_count += dimensions;
if(memory_used) *memory_used += memory;
buffer_sprintf(wb, "\n\t\t\t},\n\t\t\t\"chart_variables\": ");
health_api_v1_chart_custom_variables2json(st, wb);
buffer_strcat(wb, ",\n\t\t\t\"green\": ");
buffer_rrd_value(wb, st->green);
buffer_strcat(wb, ",\n\t\t\t\"red\": ");
buffer_rrd_value(wb, st->red);
if (likely(!skip_volatile)) {
buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
size_t alarms = 0;
RRDCALC *rc;
netdata_rwlock_rdlock(&st->alerts.rwlock);
DOUBLE_LINKED_LIST_FOREACH_FORWARD(st->alerts.base, rc, prev, next) {
buffer_sprintf(
wb,
"%s"
"\t\t\t\t\"%s\": {\n"
"\t\t\t\t\t\"id\": %u,\n"
"\t\t\t\t\t\"status\": \"%s\",\n"
"\t\t\t\t\t\"units\": \"%s\",\n"
"\t\t\t\t\t\"update_every\": %d\n"
"\t\t\t\t}",
(alarms) ? ",\n" : "", rrdcalc_name(rc), rc->id, rrdcalc_status2string(rc->status), rrdcalc_units(rc),
rc->update_every);
alarms++;
}
netdata_rwlock_unlock(&st->alerts.rwlock);
buffer_sprintf(wb,
"\n\t\t\t}"
);
}
buffer_strcat(wb, ",\n\t\t\t\"chart_labels\": {\n");
chart_labels2json(st, wb, 2);
buffer_strcat(wb, "\t\t\t}");
buffer_strcat(wb, ",\n\t\t\t\"functions\": {\n");
chart_functions2json(st, wb, 4, "\"", "\"");
buffer_strcat(wb, "\t\t\t}");
buffer_sprintf(wb,
"\n\t\t}"
);
}
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