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DL6ER
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/* Pi-hole: A black hole for Internet advertisements
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* (c) 2021 Pi-hole, LLC (https://pi-hole.net)
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* Network-wide ad blocking via your own hardware.
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*
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* FTL Engine
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* FTL struct metrics definition
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*
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* This file is copyright under the latest version of the EUPL.
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* Please see LICENSE file for your rights under this license. */
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#ifndef METRICS_H
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#define METRICS_H
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#include "webserver/cJSON/cJSON.h"
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// defined in src/dnsmasq/cache.c
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const char *rrtype_name(unsigned short type);
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enum rrtype_array {
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RRTYPE_OTHER = 0,
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RRTYPE_A,
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RRTYPE_AAAA,
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RRTYPE_CNAME,
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RRTYPE_DS,
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RRTYPE_DNSKEY,
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RRTYPE_MAX
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};
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enum cache_live {
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CACHE_VALID = 0,
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CACHE_STALE,
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CACHE_LIVE_MAX
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};
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#define RRTYPES RRTYPE_MAX+10
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struct metrics
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{
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struct dns
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{
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struct cache
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{
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// <cache-size> is obvious
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int size;
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// It means the resolver handled <cache-inserted> names lookups that
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// needed to be sent to upstream servers and that <cache-live-freed>
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// was thrown out of the cache before reaching the end of its
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// time-to-live, to make room for a newer name.
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// For <cache-live-freed>, smaller is better. New queries are always
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// cached. If the cache is full with entries which haven't reached
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// the end of their time-to-live, then the entry which hasn't been
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// looked up for the longest time is evicted.
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int live_freed;
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int inserted;
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// <expired> cache entries (to be removed when space is needed)
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int expired;
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// <immortal> cache records never expire (e.g. from /etc/hosts)
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int immortal;
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// <content> are cache entries with positive remaining TTL
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struct content {
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uint16_t type;
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int count[CACHE_LIVE_MAX]; // 0 = valid, 1 = stale
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} content[RRTYPES];
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} cache;
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int local_answered;
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int forwarded_queries;
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int stale_answered;
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int unanswered_queries;
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int auth_answered;
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} dns;
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struct dhcp {
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int ack;
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int decline;
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int discover;
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int inform;
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int nak;
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int offer;
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int release;
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int request;
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int noanswer;
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struct leases
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{
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int allocated_4;
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int pruned_4;
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int allocated_6;
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int pruned_6;
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} leases;
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int bootp;
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int pxe;
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} dhcp;
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};
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void get_dnsmasq_metrics(struct metrics *ci);
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void get_dnsmasq_metrics_obj(cJSON *json);
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#endif // METRICS_H
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