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// SPDX-License-Identifier: GPL-3.0-or-later
#include "rrdset2json.h"
static int process_label_callback(const char *name, const char *value, RRDLABEL_SRC ls, void *data) {
BUFFER *wb = data;
buffer_json_member_add_string_or_empty(wb, name, value);
return 1;
}
void chart_labels2json(RRDSET *st, BUFFER *wb)
{
if(unlikely(!st->rrdlabels))
return;
rrdlabels_walkthrough_read(st->rrdlabels, process_label_callback, wb);
}
// generate JSON for the /api/v1/chart API call
void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used)
{
time_t first_entry_t = rrdset_first_entry_s(st);
time_t last_entry_t = rrdset_last_entry_s(st);
char buf[RRD_ID_LENGTH_MAX + 16];
buffer_json_member_add_string(wb, "id", rrdset_id(st));
buffer_json_member_add_string(wb, "name", rrdset_name(st));
buffer_json_member_add_string(wb, "type", rrdset_parts_type(st));
buffer_json_member_add_string(wb, "family", rrdset_family(st));
buffer_json_member_add_string(wb, "context", rrdset_context(st));
snprintfz(buf, RRD_ID_LENGTH_MAX + 15, "%s (%s)", rrdset_title(st), rrdset_name(st));
buffer_json_member_add_string(wb, "title", buf);
buffer_json_member_add_int64(wb, "priority", st->priority);
buffer_json_member_add_string(wb, "plugin", rrdset_plugin_name(st));
buffer_json_member_add_string(wb, "module", rrdset_module_name(st));
buffer_json_member_add_string(wb, "units", rrdset_units(st));
snprintfz(buf, RRD_ID_LENGTH_MAX + 15, "/api/v1/data?chart=%s", rrdset_name(st));
buffer_json_member_add_string(wb, "data_url", buf);
buffer_json_member_add_string(wb, "chart_type", rrdset_type_name(st->chart_type));
buffer_json_member_add_int64(wb, "duration", (int64_t)(last_entry_t - first_entry_t + st->update_every));
buffer_json_member_add_int64(wb, "first_entry", (int64_t)first_entry_t);
buffer_json_member_add_int64(wb, "last_entry", (int64_t)last_entry_t);
buffer_json_member_add_int64(wb, "update_every", (int64_t)st->update_every);
unsigned long memory = sizeof(RRDSET);
size_t dimensions = 0;
buffer_json_member_add_object(wb, "dimensions");
{
RRDDIM *rd;
rrddim_foreach_read(rd, st)
{
if (rrddim_option_check(rd, RRDDIM_OPTION_HIDDEN) || rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE))
continue;
memory += rrddim_size() + rd->db.memsize;
buffer_json_member_add_object(wb, rrddim_id(rd));
buffer_json_member_add_string(wb, "name", rrddim_name(rd));
buffer_json_object_close(wb);
dimensions++;
}
rrddim_foreach_done(rd);
}
buffer_json_object_close(wb);
if(dimensions_count) *dimensions_count += dimensions;
if(memory_used) *memory_used += memory;
buffer_json_member_add_object(wb, "chart_variables");
health_api_v1_chart_custom_variables2json(st, wb);
buffer_json_object_close(wb);
buffer_json_member_add_double(wb, "green", st->green);
buffer_json_member_add_double(wb, "red", st->red);
{
buffer_json_member_add_object(wb, "alarms");
RRDCALC *rc;
rw_spinlock_read_lock(&st->alerts.spinlock);
DOUBLE_LINKED_LIST_FOREACH_FORWARD(st->alerts.base, rc, prev, next)
{
{
buffer_json_member_add_object(wb, rrdcalc_name(rc));
buffer_json_member_add_string_or_empty(wb, "id", rrdcalc_name(rc));
buffer_json_member_add_string_or_empty(wb, "status", rrdcalc_status2string(rc->status));
buffer_json_member_add_string_or_empty(wb, "units", rrdcalc_units(rc));
buffer_json_member_add_int64(wb, "duration", (int64_t)rc->update_every);
buffer_json_object_close(wb);
}
}
rw_spinlock_read_unlock(&st->alerts.spinlock);
buffer_json_object_close(wb);
}
buffer_json_member_add_object(wb, "chart_labels");
chart_labels2json(st, wb);
buffer_json_object_close(wb);
buffer_json_member_add_object(wb, "functions");
chart_functions2json(st, wb);
buffer_json_object_close(wb);
}
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