1 files changed, 106 insertions, 0 deletions
diff --git a/src/web/api/formatters/rrdset2json.c b/src/web/api/formatters/rrdset2json.c
new file mode 100644
index 000000000..542178b25
--- /dev/null
+++ b/src/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 __maybe_unused, 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->config.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);
+}