diff options
Diffstat (limited to 'web/api/formatters/rrdset2json.c')
-rw-r--r-- | web/api/formatters/rrdset2json.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/web/api/formatters/rrdset2json.c b/web/api/formatters/rrdset2json.c new file mode 100644 index 00000000..9ada3533 --- /dev/null +++ b/web/api/formatters/rrdset2json.c @@ -0,0 +1,106 @@ +// 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); +} |