Viewing file:  rrdset2json.c (4.89 KB) -rw-r--r--
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// 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);
}
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