1 files changed, 108 insertions, 0 deletions
diff --git a/web/api/formatters/rrdset2json.c b/web/api/formatters/rrdset2json.c
new file mode 100644
index 000000000..6d57e34cf
--- /dev/null
+++ b/web/api/formatters/rrdset2json.c
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rrdset2json.h"
+
+// generate JSON for the /api/v1/chart API call
+
+void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used) {
+    rrdset_rdlock(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\"enabled\": %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"
+            "\t\t\t\"duration\": %ld,\n"
+            "\t\t\t\"first_entry\": %ld,\n"
+            "\t\t\t\"last_entry\": %ld,\n"
+            "\t\t\t\"update_every\": %d,\n"
+            "\t\t\t\"dimensions\": {\n"
+                   , st->id
+                   , st->name
+                   , st->type
+                   , st->family
+                   , st->context
+                   , st->title, st->name
+                   , st->priority
+                   , st->plugin_name?st->plugin_name:""
+                   , st->module_name?st->module_name:""
+                   , rrdset_flag_check(st, RRDSET_FLAG_ENABLED)?"true":"false"
+                   , st->units
+                   , st->name
+                   , rrdset_type_name(st->chart_type)
+                   , st->entries * st->update_every
+                   , rrdset_first_entry_t(st)
+                   , rrdset_last_entry_t(st)
+                   , st->update_every
+    );
+
+    unsigned long memory = st->memsize;
+
+    size_t dimensions = 0;
+    RRDDIM *rd;
+    rrddim_foreach_read(rd, st) {
+        if(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)) continue;
+
+        memory += rd->memsize;
+
+        buffer_sprintf(
+                wb
+                , "%s"
+                  "\t\t\t\t\"%s\": { \"name\": \"%s\" }"
+                , dimensions ? ",\n" : ""
+                , rd->id
+                , rd->name
+        );
+
+        dimensions++;
+    }
+
+    if(dimensions_count) *dimensions_count += dimensions;
+    if(memory_used) *memory_used += memory;
+
+    buffer_strcat(wb, "\n\t\t\t},\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);
+
+    buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
+    size_t alarms = 0;
+    RRDCALC *rc;
+    for(rc = st->alarms; rc ; rc = rc->rrdset_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" : ""
+                , rc->name
+                , rc->id
+                , rrdcalc_status2string(rc->status)
+                , rc->units
+                , rc->update_every
+        );
+
+        alarms++;
+    }
+
+    buffer_sprintf(wb,
+            "\n\t\t\t}\n\t\t}"
+    );
+
+    rrdset_unlock(st);
+}