dovecot-2.2: virtual plugin: Disable caching via mailbox list in...

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.2/rev/587226389203
changeset: 19177:587226389203
user:      Timo Sirainen <tss at iki.fi>
date:      Tue Sep 22 13:50:08 2015 +0300
description:
virtual plugin: Disable caching via mailbox list indexes.
Otherwise e.g. STATUS can give stale replies.

diffstat:

 src/plugins/virtual/virtual-storage.c |  22 ++++++++++++++++++++--
 1 files changed, 20 insertions(+), 2 deletions(-)

diffs (39 lines):

diff -r 0d3a438c8928 -r 587226389203 src/plugins/virtual/virtual-storage.c
--- a/src/plugins/virtual/virtual-storage.c	Tue Sep 22 01:05:09 2015 +0300
+++ b/src/plugins/virtual/virtual-storage.c	Tue Sep 22 13:50:08 2015 +0300
@@ -701,6 +701,24 @@
 	return index_storage_is_inconsistent(box);
 }
 
+static int
+virtual_list_index_has_changed(struct mailbox *box ATTR_UNUSED,
+			       struct mail_index_view *list_view ATTR_UNUSED,
+			       uint32_t seq ATTR_UNUSED)
+{
+	/* we don't have any quick and easy optimizations for tracking
+	   virtual folders. ideally we'd completely disable mailbox list
+	   indexes for them, but this is the easiest way to do it for now. */
+	return 1;
+}
+
+static void
+virtual_list_index_update_sync(struct mailbox *box ATTR_UNUSED,
+			       struct mail_index_transaction *trans ATTR_UNUSED,
+			       uint32_t seq ATTR_UNUSED)
+{
+}
+
 struct mail_storage virtual_storage = {
 	.name = VIRTUAL_STORAGE_NAME,
 	.class_flags = MAIL_STORAGE_CLASS_FLAG_NOQUOTA,
@@ -738,8 +756,8 @@
 		index_storage_attribute_iter_init,
 		index_storage_attribute_iter_next,
 		index_storage_attribute_iter_deinit,
-		NULL,
-		NULL,
+		virtual_list_index_has_changed,
+		virtual_list_index_update_sync,
 		virtual_storage_sync_init,
 		index_mailbox_sync_next,
 		index_mailbox_sync_deinit,