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add up to 10 minutes of jitter for refresh/retry, clammed as: RETRYTIME >= actual_retry >= RETRYTIME * .80

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Michael Graff 2000-09-08 00:07:44 +00:00
parent 95236b0363
commit 4e8518aa8f
1 changed files with 29 additions and 5 deletions
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34
lib/dns/zone.c
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@ -15,12 +15,13 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: zone.c,v 1.203 2000/09/07 04:20:52 marka Exp $ */
/* $Id: zone.c,v 1.204 2000/09/08 00:07:44 explorer Exp $ */
#include <config.h>
#include <isc/file.h>
#include <isc/print.h>
#include <isc/random.h>
#include <isc/ratelimiter.h>
#include <isc/serial.h>
#include <isc/string.h>
@ -83,6 +84,9 @@
#define DNS_MAX_EXPIRE 14515200 /* 24 weeks */
#endif
#define REFRESH_JITTER 600 /* seconds */
#define RETRY_JITTER 600
typedef struct dns_notify dns_notify_t;
typedef struct dns_stub dns_stub_t;
typedef struct dns_load dns_load_t;
@ -912,7 +916,7 @@ zone_postload(dns_zone_t *zone, dns_db_t *db, isc_time_t loadtime,
zone->loadtime = loadtime;
isc_stdtime_get(&now);
zone_log(zone, me, ISC_LOG_DEBUG(1), "loaded");
zone_log(zone, me, ISC_LOG_INFO, "loaded");
/*
* Apply update log, if any.
@ -984,6 +988,7 @@ zone_postload(dns_zone_t *zone, dns_db_t *db, isc_time_t loadtime,
zone->minretry, zone->maxretry);
zone->expire = RANGE(expire, zone->refresh + zone->retry,
DNS_MAX_EXPIRE);
zone->minimum = minimum;
if (zone->type == dns_zone_slave ||
zone->type == dns_zone_stub) {
@ -1697,10 +1702,16 @@ dns_zone_refresh(dns_zone_t *zone) {
/*
* Set the next refresh time as if refresh check has failed.
* Setting this to the retry time will do that. XXXMLG
* If we are successful it will be reset using zone->refresh.
*/
zone->refreshtime = now + isc_random_jitter(zone->retry,
zone->retry * .80,
RETRY_JITTER);
zone_log(zone, "dns_zone_refresh", ISC_LOG_DEBUG(20),
"refresh time (%u/%u), now %u",
zone->refreshtime, zone->refresh, now);
zone->refreshtime = now + zone->retry;
zone->curmaster = 0;
/* initiate soa query */
queue_soa_query(zone);
@ -2864,8 +2875,14 @@ refresh_callback(isc_task_t *task, isc_event_t *event) {
zone->dbname,
dns_result_totext(result));
}
zone->refreshtime = now + zone->refresh;
zone->refreshtime = now +
isc_random_jitter(zone->refresh, zone->refresh * .80,
REFRESH_JITTER);
zone->expiretime = now + zone->expire;
zone_log(zone, me, ISC_LOG_DEBUG(20),
"refresh time (%u/%u), now %u",
zone->refreshtime, zone->refresh, now);
goto next_master;
} else {
ZONE_LOG(1, "ahead");
@ -4147,7 +4164,14 @@ zone_xfrdone(dns_zone_t *zone, isc_result_t result) {
zone->refreshtime = now;
zone->expiretime = now + zone->expire;
} else {
zone->refreshtime = now + zone->refresh;
zone->refreshtime = now +
isc_random_jitter(zone->refresh,
zone->refresh * .80,
REFRESH_JITTER);
zone_log(zone, me, ISC_LOG_DEBUG(20),
"refresh time (%u/%u), now %u",
zone->refreshtime, zone->refresh, now);
zone->expiretime = now + zone->expire;
}