dovecot-2.2: director: Don't allow doveadm to update backend's s...

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.2/rev/5939512ff017
changeset: 19288:5939512ff017
user:      Timo Sirainen <tss at iki.fi>
date:      Sat Oct 10 18:32:56 2015 +0300
description:
director: Don't allow doveadm to update backend's state if the state is already being changed.

diffstat:

 src/director/doveadm-connection.c |  12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)

diffs (29 lines):

diff -r 0f9d4f1a083d -r 5939512ff017 src/director/doveadm-connection.c
--- a/src/director/doveadm-connection.c	Sat Oct 10 18:32:06 2015 +0300
+++ b/src/director/doveadm-connection.c	Sat Oct 10 18:32:56 2015 +0300
@@ -282,6 +282,10 @@
 			return TRUE;
 		}
 		host = mail_host_add_ip(dir->mail_hosts, &ip, tag);
+	} else if (host->desynced) {
+		o_stream_nsend_str(conn->output,
+			"host is already being updated - try again later\n");
+		return TRUE;
 	}
 	if (vhost_count != UINT_MAX)
 		mail_host_set_vhost_count(dir->mail_hosts, host, vhost_count);
@@ -323,7 +327,13 @@
 		o_stream_nsend_str(conn->output, "NOTFOUND\n");
 		return TRUE;
 	}
-	if (host->down != down) {
+	if (host->down == down)
+		;
+	else if (host->desynced) {
+		o_stream_nsend_str(conn->output,
+			"host is already being updated - try again later\n");
+		return TRUE;
+	} else {
 		mail_host_set_down(conn->dir->mail_hosts, host,
 				   down, ioloop_time);
 		director_update_host(conn->dir, conn->dir->self_host,