diff options
Diffstat (limited to 'server/responder/nss/nsssrv_cmd.c')
| -rw-r--r-- | server/responder/nss/nsssrv_cmd.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/server/responder/nss/nsssrv_cmd.c b/server/responder/nss/nsssrv_cmd.c index 3d4226fb..8f4f5db8 100644 --- a/server/responder/nss/nsssrv_cmd.c +++ b/server/responder/nss/nsssrv_cmd.c @@ -278,10 +278,10 @@ static errno_t check_cache(struct nss_dom_ctx *dctx, { errno_t ret; int timeout; - int refresh_timeout; time_t now; uint64_t lastUpdate; uint64_t cacheExpire; + uint64_t midpoint_refresh; struct nss_cmd_ctx *cmdctx = dctx->cmdctx; struct cli_ctx *cctx = cmdctx->cctx; bool call_provider = false; @@ -298,13 +298,26 @@ static errno_t check_cache(struct nss_dom_ctx *dctx, } else if ((req_type == SSS_DP_GROUP) || ((req_type == SSS_DP_USER) && (res->count == 1))) { - refresh_timeout = nctx->cache_refresh_timeout; now = time(NULL); lastUpdate = ldb_msg_find_attr_as_uint64(res->msgs[0], SYSDB_LAST_UPDATE, 0); cacheExpire = ldb_msg_find_attr_as_uint64(res->msgs[0], SYSDB_CACHE_EXPIRE, 0); + + midpoint_refresh = 0; + if(nctx->cache_refresh_percent) { + midpoint_refresh = lastUpdate + + (cacheExpire - lastUpdate)*nctx->cache_refresh_percent/100; + if (midpoint_refresh - lastUpdate < 10) { + /* If the percentage results in an expiration + * less than ten seconds after the lastUpdate time, + * that's too often we will simply set it to 10s + */ + midpoint_refresh = lastUpdate+10; + } + } + if (cacheExpire < now) { /* This is a cache miss. We need to get the updated user * information before returning it. @@ -312,11 +325,12 @@ static errno_t check_cache(struct nss_dom_ctx *dctx, call_provider = true; cb = callback; } - else if (refresh_timeout && (lastUpdate + refresh_timeout < now)) { + else if (midpoint_refresh && midpoint_refresh < now) { /* We're past the the cache refresh timeout * We'll return the value from the cache, but we'll also * queue the cache entry for update out-of-band. */ + DEBUG(6, ("Performing midpoint cache update on [%s]\n", opt_name)); call_provider = true; cb = NULL; } |