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1526. [func] Implemented "additional section caching (or acache)",

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an internal cache framework for additional section
			content to improve response performance.  Several
			configuration options were provided to control the
			behavior.
This commit is contained in:
Tatuya JINMEI 神明達哉
2004-12-21 10:45:20 +00:00
parent 0e93730a02
commit d0eb2cc33c
27 changed files with 3802 additions and 95 deletions
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53
bin/named/server.c
View File

@@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: server.c,v 1.433 2004/11/10 22:14:28 marka Exp $ */
/* $Id: server.c,v 1.434 2004/12/21 10:45:15 jinmei Exp $ */
#include <config.h>
@@ -41,6 +41,7 @@
#include <bind9/check.h>
#include <dns/acache.h>
#include <dns/adb.h>
#include <dns/cache.h>
#include <dns/db.h>
@@ -733,6 +734,7 @@ configure_view(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig,
isc_result_t result;
isc_uint32_t max_adb_size;
isc_uint32_t max_cache_size;
isc_uint32_t max_acache_size;
isc_uint32_t lame_ttl;
dns_tsig_keyring_t *ring;
dns_view_t *pview = NULL; /* Production view */
@@ -776,6 +778,51 @@ configure_view(dns_view_t *view, cfg_obj_t *config, cfg_obj_t *vconfig,
CHECKM(ns_config_getport(config, &port), "port");
dns_view_setdstport(view, port);
/*
* Create additional cache for this view and zones under the view
* unless explicitly disabled.
*/
obj = NULL;
ns_config_get(maps, "use-additional-cache", &obj);
if (obj == NULL || cfg_obj_asboolean(obj)) {
cmctx = NULL;
CHECK(isc_mem_create(0, 0, &cmctx));
CHECK(dns_acache_create(&view->acache, cmctx, ns_g_taskmgr,
ns_g_timermgr));
isc_mem_detach(&cmctx);
}
if (view->acache != NULL) {
obj = NULL;
result = ns_config_get(maps, "acache-cleaning-interval", &obj);
INSIST(result == ISC_R_SUCCESS);
dns_acache_setcleaninginterval(view->acache,
cfg_obj_asuint32(obj) * 60);
obj = NULL;
result = ns_config_get(maps, "max-acache-size", &obj);
INSIST(result == ISC_R_SUCCESS);
if (cfg_obj_isstring(obj)) {
str = cfg_obj_asstring(obj);
INSIST(strcasecmp(str, "unlimited") == 0);
max_acache_size = ISC_UINT32_MAX;
} else {
isc_resourcevalue_t value;
value = cfg_obj_asuint64(obj);
if (value > ISC_UINT32_MAX) {
cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR,
"'max-acache-size "
"%" ISC_PRINT_QUADFORMAT
"d' is too large",
value);
result = ISC_R_RANGE;
goto cleanup;
}
max_acache_size = (isc_uint32_t)value;
}
dns_acache_setcachesize(view->acache, max_acache_size);
}
/*
* Configure the zones.
*/
@@ -1737,6 +1784,8 @@ configure_zone(cfg_obj_t *config, cfg_obj_t *zconfig, cfg_obj_t *vconfig,
* new view.
*/
dns_zone_setview(zone, view);
if (view->acache != NULL)
dns_zone_setacache(zone, view->acache);
} else {
/*
* We cannot reuse an existing zone, we have
@@ -1745,6 +1794,8 @@ configure_zone(cfg_obj_t *config, cfg_obj_t *zconfig, cfg_obj_t *vconfig,
CHECK(dns_zone_create(&zone, mctx));
CHECK(dns_zone_setorigin(zone, origin));
dns_zone_setview(zone, view);
if (view->acache != NULL)
dns_zone_setacache(zone, view->acache);
CHECK(dns_zonemgr_managezone(ns_g_server->zonemgr, zone));
}