Recommitting revision 122228, which was accidentally reverted

as a result of commit 122234.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@122399 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_queue.c

@@ -529,6 +529,7 @@ static struct ao2_container *queues;
 static void update_realtime_members(struct call_queue *q);
 static int set_member_paused(const char *queuename, const char *interface, const char *reason, int paused);
 
+static void queue_transfer_fixup(void *data, struct ast_channel *old_chan, struct ast_channel *new_chan); 
 /*! \brief sets the QUEUESTATUS channel variable */
 static void set_queue_result(struct ast_channel *chan, enum queue_result res)
 {
@@ -3043,6 +3044,82 @@ static void send_agent_complete(const struct queue_ent *qe, const char *queuenam
 		qe->parent->eventwhencalled == QUEUE_EVENT_VARIABLES ? vars2manager(qe->chan, vars, vars_len) : "");
 }
 
+struct queue_transfer_ds {
+	struct queue_ent *qe;
+	struct member *member;
+	int starttime;
+};
+
+/*! \brief a datastore used to help correctly log attended transfers of queue callers
+ */
+static const struct ast_datastore_info queue_transfer_info = {
+	.type = "queue_transfer",
+	.chan_fixup = queue_transfer_fixup,
+};
+
+/*! \brief Log an attended transfer when a queue caller channel is masqueraded
+ *
+ * When a caller is masqueraded, we want to log a transfer. Fixup time is the closest we can come to when
+ * the actual transfer occurs. This happens during the masquerade after datastores are moved from old_chan
+ * to new_chan. This is why new_chan is referenced for exten, context, and datastore information.
+ *
+ * At the end of this, we want to remove the datastore so that this fixup function is not called on any
+ * future masquerades of the caller during the current call.
+ */
+static void queue_transfer_fixup(void *data, struct ast_channel *old_chan, struct ast_channel *new_chan) 
+{
+	struct queue_transfer_ds *qtds = data;
+	struct queue_ent *qe = qtds->qe;
+	struct member *member = qtds->member;
+	int callstart = qtds->starttime;
+	struct ast_datastore *datastore;
+	
+	ast_queue_log(qe->parent->name, qe->chan->uniqueid, member->membername, "TRANSFER", "%s|%s|%ld|%ld",
+				new_chan->exten, new_chan->context, (long) (callstart - qe->start),
+				(long) (time(NULL) - callstart));
+	
+	if (!(datastore = ast_channel_datastore_find(new_chan, &queue_transfer_info, NULL))) {
+		ast_log(LOG_WARNING, "Can't find the queue_transfer datastore.\n");
+		return;
+	}
+
+	ast_channel_datastore_remove(new_chan, datastore);
+}
+
+/*! \brief mechanism to tell if a queue caller was atxferred by a queue member.
+ *
+ * When a caller is atxferred, then the queue_transfer_info datastore
+ * is removed from the channel. If it's still there after the bridge is
+ * broken, then the caller was not atxferred.
+ */
+static int attended_transfer_occurred(struct ast_channel *chan)
+{
+	return ast_channel_datastore_find(chan, &queue_transfer_info, NULL) ? 0 : 1;
+}
+
+/*! \brief create a datastore for storing relevant info to log attended transfers in the queue_log
+ */
+static void setup_transfer_datastore(struct queue_ent *qe, struct member *member, int starttime)
+{
+	struct ast_datastore *ds;
+	struct queue_transfer_ds qtds;
+
+	ast_channel_lock(qe->chan);
+	if (!(ds = ast_channel_datastore_alloc(&queue_transfer_info, NULL))) {
+		ast_channel_unlock(qe->chan);
+		ast_log(LOG_WARNING, "Unable to create transfer datastore. queue_log will not show attended transfer\n");
+		return;
+	}
+
+	qtds.qe = qe;
+	/* This member is refcounted in try_calling, so no need to add it here, too */
+	qtds.member = member;
+	qtds.starttime = starttime;
+	ds->data = &qtds;
+	ast_channel_datastore_add(qe->chan, ds);
+	ast_channel_unlock(qe->chan);
+}
+
 /*! \brief A large function which calls members, updates statistics, and bridges the caller and a member
  * 
  * Here is the process of this function
@@ -3682,9 +3759,13 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 		ast_copy_string(oldcontext, qe->chan->context, sizeof(oldcontext));
 		ast_copy_string(oldexten, qe->chan->exten, sizeof(oldexten));
 		time(&callstart);
-
+		setup_transfer_datastore(qe, member, callstart);
 		bridge = ast_bridge_call(qe->chan,peer, &bridge_config);
 
+		/* If the queue member did an attended transfer, then the TRANSFER already was logged in the queue_log
+		 * when the masquerade occurred. These other "ending" queue_log messages are unnecessary
+		 */
+		if (!attended_transfer_occurred(qe->chan)) {
 			if (strcasecmp(oldcontext, qe->chan->context) || strcasecmp(oldexten, qe->chan->exten)) {
 				ast_queue_log(queuename, qe->chan->uniqueid, member->membername, "TRANSFER", "%s|%s|%ld|%ld",
 					qe->chan->exten, qe->chan->context, (long) (callstart - qe->start),
@@ -3699,6 +3780,7 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 					(long) (callstart - qe->start), (long) (time(NULL) - callstart), qe->opos);
 				send_agent_complete(qe, queuename, peer, member, callstart, vars, sizeof(vars), AGENT);
 			}
+		}
 
 		if (bridge != AST_PBX_NO_HANGUP_PEER)
 			ast_hangup(peer);