openldap: make connection to server persistent

Removes the overhead of connection setup/teardown at each read interval.

diff --git a/src/openldap.c b/src/openldap.c
index ffcdb94..1ef9f7b 100644 (file)
--- a/src/openldap.c
+++ b/src/openldap.c
@@ -74,6 +74,13 @@ static int cldap_init_host (cldap_t *st) /* {{{ */
 {
        LDAP *ld;
        int rc;
+
+       if (st->state && st->ld)
+       {
+               DEBUG ("openldap plugin: Already connected to %s", st->url);
+               return (0);
+       }
+
        rc = ldap_initialize (&ld, st->url);
        if (rc != LDAP_SUCCESS)
        {
@@ -231,6 +238,7 @@ static int cldap_read_host (user_data_t *ud) /* {{{ */
                ERROR ("openldap plugin: Failed to execute search: %s",
                                ldap_err2string (rc));
                ldap_msgfree (result);
+               st->state = 0;
                ldap_unbind_ext_s (st->ld, NULL, NULL);
                return (-1);
        }
@@ -528,7 +536,6 @@ static int cldap_read_host (user_data_t *ud) /* {{{ */
        }
 
        ldap_msgfree (result);
-       ldap_unbind_ext_s (st->ld, NULL, NULL);
        return (0);
 } /* }}} int cldap_read_host */