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[master] add JSON statistics channel

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3524.	[func]		Added an alternate statistics channel in JSON format,
			when the server is built with the json-c library:
			http://[address]:[port]/json.  [RT #32630]
This commit is contained in:
Evan Hunt
2013-03-13 14:24:50 -07:00
parent 8a64253066
commit feb067b25a
18 changed files with 1432 additions and 23 deletions
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84
lib/dns/cache.c
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@@ -21,6 +21,7 @@
#include <config.h>
#include <isc/json.h>
#include <isc/mem.h>
#include <isc/print.h>
#include <isc/string.h>
@@ -29,6 +30,7 @@
#include <isc/time.h>
#include <isc/timer.h>
#include <isc/util.h>
#include <isc/xml.h>
#include <dns/cache.h>
#include <dns/db.h>
@@ -1448,3 +1450,85 @@ error:
return (xmlrc);
}
#endif
#ifdef HAVE_JSON
#define CHECKMEM(m) do { \
if (m == NULL) { \
result = ISC_R_NOMEMORY;\
goto error;\
} \
} while(0)
isc_result_t
dns_cache_renderjson(dns_cache_t *cache, json_object *cstats) {
isc_result_t result = ISC_R_SUCCESS;
int indices[dns_cachestatscounter_max];
isc_uint64_t values[dns_cachestatscounter_max];
json_object *obj;
REQUIRE(VALID_CACHE(cache));
getcounters(cache->stats, isc_statsformat_file,
dns_cachestatscounter_max, indices, values);
obj = json_object_new_int64(values[dns_cachestatscounter_hits]);
CHECKMEM(obj);
json_object_object_add(cstats, "CacheHits", obj);
obj = json_object_new_int64(values[dns_cachestatscounter_misses]);
CHECKMEM(obj);
json_object_object_add(cstats, "CacheMisses", obj);
obj = json_object_new_int64(values[dns_cachestatscounter_queryhits]);
CHECKMEM(obj);
json_object_object_add(cstats, "QueryHits", obj);
obj = json_object_new_int64(values[dns_cachestatscounter_querymisses]);
CHECKMEM(obj);
json_object_object_add(cstats, "QueryMisses", obj);
obj = json_object_new_int64(values[dns_cachestatscounter_deletelru]);
CHECKMEM(obj);
json_object_object_add(cstats, "DeleteLRU", obj);
obj = json_object_new_int64(values[dns_cachestatscounter_deletettl]);
CHECKMEM(obj);
json_object_object_add(cstats, "DeleteTTL", obj);
obj = json_object_new_int64(dns_db_nodecount(cache->db));
CHECKMEM(obj);
json_object_object_add(cstats, "CacheNodes", obj);
obj = json_object_new_int64(dns_db_hashsize(cache->db));
CHECKMEM(obj);
json_object_object_add(cstats, "CacheBuckets", obj);
obj = json_object_new_int64(isc_mem_total(cache->mctx));
CHECKMEM(obj);
json_object_object_add(cstats, "TreeMemTotal", obj);
obj = json_object_new_int64(isc_mem_inuse(cache->mctx));
CHECKMEM(obj);
json_object_object_add(cstats, "TreeMemInUse", obj);
obj = json_object_new_int64(isc_mem_maxinuse(cache->mctx));
CHECKMEM(obj);
json_object_object_add(cstats, "HeapMemMax", obj);
obj = json_object_new_int64(isc_mem_total(cache->hmctx));
CHECKMEM(obj);
json_object_object_add(cstats, "HeapMemTotal", obj);
obj = json_object_new_int64(isc_mem_inuse(cache->hmctx));
CHECKMEM(obj);
json_object_object_add(cstats, "HeapMemInUse", obj);
obj = json_object_new_int64(isc_mem_maxinuse(cache->hmctx));
CHECKMEM(obj);
json_object_object_add(cstats, "HeapMemMax", obj);
result = ISC_R_SUCCESS;
error:
return (result);
}
#endif