[sr-dev] git:5.0:b30edd2b: dmq: attempt to re-initialize if node becomes detatched from cluster

[Daniel-Constantin Mierla]

Module: kamailio
Branch: 5.0
Commit: b30edd2b19d7e30c1d2f9cef9303ae86bcd1c0f2
URL: https://github.com/kamailio/kamailio/commit/b30edd2b19d7e30c1d2f9cef9303ae86bcd1c0f2

Author: Charles Chance <charles.chance at sipcentric.com>
Committer: Daniel-Constantin Mierla <miconda at gmail.com>
Date: 2017-04-04T13:52:37+02:00

dmq: attempt to re-initialize if node becomes detatched from cluster

- issue reported by José Seabra on sr-users mailing list

(cherry picked from commit 666ebb63aecf2254b8efeae261452fc75c6d3aed)

---

Modified: src/modules/dmq/dmq_funcs.c

---

Diff:  https://github.com/kamailio/kamailio/commit/b30edd2b19d7e30c1d2f9cef9303ae86bcd1c0f2.diff
Patch: https://github.com/kamailio/kamailio/commit/b30edd2b19d7e30c1d2f9cef9303ae86bcd1c0f2.patch

---

diff --git a/src/modules/dmq/dmq_funcs.c b/src/modules/dmq/dmq_funcs.c
index 57c8c88..622ec42 100644
--- a/src/modules/dmq/dmq_funcs.c
+++ b/src/modules/dmq/dmq_funcs.c
@@ -459,12 +459,28 @@ void ping_servers(unsigned int ticks, void *param) {
 	str* body;
 	int ret;
 	LM_DBG("ping_servers\n");
+
+	if (!node_list->nodes || (node_list->nodes->local && !node_list->nodes->next)) {
+		LM_DBG("node list is empty - attempt to rebuild from notification address\n");
+		*dmq_init_callback_done = 0;
+		if(dmq_notification_address.s) {
+			notification_node = add_server_and_notify(&dmq_notification_address);
+			if(!notification_node) {
+				LM_ERR("cannot retrieve initial nodelist from %.*s\n",
+					STR_FMT(&dmq_notification_address));
+			}
+		} else {
+			LM_ERR("no notification address");
+		}
+		return;
+	}
+
 	body = build_notification_body();
 	if (!body) {
 		LM_ERR("could not build notification body\n");
 		return;
 	}
-	ret = bcast_dmq_message(dmq_notification_peer, body, notification_node,
+	ret = bcast_dmq_message(dmq_notification_peer, body, NULL,
 			&notification_callback, 1, &notification_content_type);
 	pkg_free(body->s);
 	pkg_free(body);