Ensure dummy channels get a stasis topic.

Fixes test failure introduced in r382685.

(issue ASTERISK-20887)
(issue ASTERISK-20959)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@382721 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/channel.c

@@ -1283,6 +1283,8 @@ struct ast_channel *ast_dummy_channel_alloc(void)
 	ast_channel_epfd_set(tmp, -1);
 #endif
 
+	ast_channel_internal_setup_topics(tmp);
+
 	headp = ast_channel_varshead(tmp);
 	AST_LIST_HEAD_INIT_NOLOCK(headp);
 

main/channel_internal_api.c

@@ -1391,8 +1391,14 @@ struct stasis_topic *ast_channel_topic(struct ast_channel *chan)
 
 void ast_channel_internal_setup_topics(struct ast_channel *chan)
 {
+	const char *topic_name = chan->uniqueid;
 	ast_assert(chan->topic == NULL);
 	ast_assert(chan->forwarder == NULL);
-	chan->topic = stasis_topic_create(chan->uniqueid);
+
+	if (ast_strlen_zero(topic_name)) {
+		topic_name = "<dummy-channel>";
+	}
+
+	chan->topic = stasis_topic_create(topic_name);
 	chan->forwarder = stasis_forward_all(chan->topic, ast_channel_topic_all());
 }

main/stasis.c

@@ -337,6 +337,10 @@ void stasis_forward_message(struct stasis_topic *topic, struct stasis_topic *pub
 	struct stasis_subscription **subscribers = NULL;
 	size_t num_subscribers, i;
 
+	ast_assert(topic != NULL);
+	ast_assert(publisher_topic != NULL);
+	ast_assert(message != NULL);
+
 	/* Copy the subscribers, so we don't have to hold the mutex for long */
 	{
 		SCOPED_AO2LOCK(lock, topic);