Add enumeration backout period.

If an enumeration has been requested recently enough, force the
nss responder to read from the cache and not go out to each backend
and do slow network operations. This greatly improves performances
if enumerations are used often.
Currently the balcout period is harcoded to 2 min, we will need to make
it a configurable option.

1 files changed, 4 insertions, 0 deletions

diff --git a/server/responder/nss/nsssrv.h b/server/responder/nss/nsssrv.h
index 1431ddedd..e08d8d296 100644
--- a/server/responder/nss/nsssrv.h
+++ b/server/responder/nss/nsssrv.h
@@ -64,6 +64,10 @@ struct nss_ctx {
 
     int cache_timeout;
 
+    int expire_time;
+    time_t last_user_enum;
+    time_t last_group_enum;
+
     struct sbus_method *sss_sbus_methods;
     struct sss_cmd_table *sss_cmds;
     const char *sss_pipe_name;