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-rw-r--r--web/api/formatters/rrdset2json.c161
1 files changed, 161 insertions, 0 deletions
diff --git a/web/api/formatters/rrdset2json.c b/web/api/formatters/rrdset2json.c
new file mode 100644
index 0000000..5482881
--- /dev/null
+++ b/web/api/formatters/rrdset2json.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "rrdset2json.h"
+
+void chart_labels2json(RRDSET *st, BUFFER *wb, size_t indentation)
+{
+ char tabs[11];
+ struct label_index *labels = &st->state->labels;
+
+ if (indentation > 10)
+ indentation = 10;
+
+ tabs[0] = '\0';
+ while (indentation) {
+ strcat(tabs, "\t");
+ indentation--;
+ }
+
+ int count = 0;
+ netdata_rwlock_rdlock(&labels->labels_rwlock);
+ for (struct label *label = labels->head; label; label = label->next) {
+ if(count > 0) buffer_strcat(wb, ",\n");
+ buffer_strcat(wb, tabs);
+
+ char value[CONFIG_MAX_VALUE * 2 + 1];
+ sanitize_json_string(value, label->value, CONFIG_MAX_VALUE * 2);
+ buffer_sprintf(wb, "\"%s\": \"%s\"", label->key, value);
+
+ count++;
+ }
+ buffer_strcat(wb, "\n");
+ netdata_rwlock_unlock(&labels->labels_rwlock);
+}
+
+// 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) {
+ rrdset_rdlock(st);
+
+ time_t first_entry_t = rrdset_first_entry_t_nolock(st);
+ time_t last_entry_t = rrdset_last_entry_t_nolock(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"
+ , 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)
+ );
+
+ if (likely(!skip_volatile))
+ buffer_sprintf(wb,
+ "\t\t\t\"duration\": %ld,\n"
+ , last_entry_t - first_entry_t + st->update_every//st->entries * st->update_every
+ );
+
+ buffer_sprintf(wb,
+ "\t\t\t\"first_entry\": %ld,\n"
+ , first_entry_t //rrdset_first_entry_t(st)
+ );
+
+ if (likely(!skip_volatile))
+ buffer_sprintf(wb,
+ "\t\t\t\"last_entry\": %ld,\n"
+ , 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 = st->memsize;
+
+ size_t dimensions = 0;
+ RRDDIM *rd;
+ rrddim_foreach_read(rd, st) {
+ if(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN) || rrddim_flag_check(rd, RRDDIM_FLAG_OBSOLETE)) continue;
+
+ memory += rd->memsize;
+
+ if (dimensions)
+ buffer_strcat(wb, ",\n\t\t\t\t\"");
+ else
+ buffer_strcat(wb, "\t\t\t\t\"");
+ buffer_strcat_jsonescape(wb, rd->id);
+ buffer_strcat(wb, "\": { \"name\": \"");
+ buffer_strcat_jsonescape(wb, rd->name);
+ buffer_strcat(wb, "\" }");
+
+ dimensions++;
+ }
+
+ 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;
+ 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}"
+ );
+ }
+ buffer_strcat(wb, ",\n\t\t\t\"chart_labels\": {\n");
+ chart_labels2json(st, wb, 2);
+ buffer_strcat(wb, "\t\t\t}\n");
+
+
+ buffer_sprintf(wb,
+ "\n\t\t}"
+ );
+
+ rrdset_unlock(st);
+}