[bug] fix notification for incoming mail with several listeners registered

When setting the listeners in the IMAP Folder, we avoid setting more
than one listener for the same imap mailbox (because in some situations
we were registering way too many listeners).

this was making the pixelated inbox registering the notification and
therefore the imap mailbox not being registered.

this MR also refactors the way pixelated is initialized, so that it
avoid creating a second Account instance. In this way, we make sure that
the pixelated mua and the imap server share the same collections for a
given mailbox, and therefore any of the two is able to get a
notification whenever the other adds a message to the mailbox.

- Resolves: #8846, #8798

5 files changed, 38 insertions, 43 deletions

diff --git a/src/leap/bitmask/mail/adaptors/soledad.py b/src/leap/bitmask/mail/adaptors/soledad.py
index a3e011a..f220aea 100644
--- a/src/leap/bitmask/mail/adaptors/soledad.py
+++ b/src/leap/bitmask/mail/adaptors/soledad.py
@@ -851,6 +851,7 @@ class SoledadMailAdaptor(SoledadIndexMixin):
     wait_for_indexes = ['get_or_create_mbox', 'update_mbox', 'get_all_mboxes']
 
     mboxwrapper_klass = MailboxWrapper
+    atomic = defer.DeferredLock()
 
     log = Logger()
 
diff --git a/src/leap/bitmask/mail/imap/mailbox.py b/src/leap/bitmask/mail/imap/mailbox.py
index f74910f..9e74cfc 100644
--- a/src/leap/bitmask/mail/imap/mailbox.py
+++ b/src/leap/bitmask/mail/imap/mailbox.py
@@ -64,14 +64,14 @@ def make_collection_listener(mailbox):
         def __init__(self, mbox):
             self.mbox = mbox
 
-            # See #8083, pixelated adaptor seems to be misusing this class.
-            self.mailbox_name = self.mbox.mbox_name
+            # See #8083, pixelated adaptor introduces conflicts in the usage
+            self.mailbox_name = self.mbox.mbox_name + 'IMAP'
 
         def __hash__(self):
-            return hash(self.mbox.mbox_name)
+            return hash(self.mailbox_name)
 
         def __eq__(self, other):
-            return self.mbox.mbox_name == other.mbox.mbox_name
+            return self.mailbox_name == other.mbox.mbox_name + 'IMAP'
 
         def notify_new(self):
             self.mbox.notify_new()
@@ -397,8 +397,6 @@ class IMAPMailbox(object):
 
         :param args: ignored.
         """
-        if not NOTIFY_NEW:
-            return
 
         def cbNotifyNew(result):
             exists, recent = result
@@ -887,15 +885,8 @@ class IMAPMailbox(object):
                  uid when the copy succeed.
         :rtype: Deferred
         """
-        # A better place for this would be  the COPY/APPEND dispatcher
-        # in server.py, but qtreactor hangs when I do that, so this seems
-        # to work fine for now.
-        # d.addCallback(lambda r: self.reactor.callLater(0, self.notify_new))
-        # deferLater(self.reactor, 0, self._do_copy, message, d)
-        # return d
-
-        d = self.collection.copy_msg(message.message,
-                                     self.collection.mbox_uuid)
+        d = self.collection.copy_msg(
+            message.message, self.collection.mbox_uuid)
         return d
 
     # convenience fun
diff --git a/src/leap/bitmask/mail/incoming/service.py b/src/leap/bitmask/mail/incoming/service.py
index b1d48cf..7c7e7f2 100644
--- a/src/leap/bitmask/mail/incoming/service.py
+++ b/src/leap/bitmask/mail/incoming/service.py
@@ -140,19 +140,6 @@ class IncomingMail(Service):
         # initialize a mail parser only once
         self._parser = Parser()
 
-    def add_listener(self, listener):
-        """
-        Add a listener to inbox insertions.
-
-        This listener function will be called for each message added to the
-        inbox with its uid as parameter. This function should not be blocking
-        or it will block the incoming queue.
-
-        :param listener: the listener function
-        :type listener: callable
-        """
-        self._listeners.append(listener)
-
     #
     # Public API: fetch, start_loop, stop.
     #
@@ -165,17 +152,18 @@ class IncomingMail(Service):
         """
         def _sync_errback(failure):
             self.log.error(
-                'Error while fetching incoming mail {0!r}'.format(failure))
+                'Error while fetching incoming mail: {0!r}'.format(failure))
 
         def syncSoledadCallback(_):
             # XXX this should be moved to adaptors
+            # TODO  we can query the blobs store instead.
             d = self._soledad.get_from_index(
                 fields.JUST_MAIL_IDX, "1", "0")
             d.addCallback(self._process_incoming_mail)
             d.addErrback(_sync_errback)
             return d
 
-        self.log.debug("fetching mail for: %s %s" % (
+        self.log.debug('Fetching mail for: %s %s' % (
             self._soledad.uuid, self._userid))
         d = self._sync_soledad()
         d.addCallbacks(syncSoledadCallback, self._errback)
@@ -231,7 +219,7 @@ class IncomingMail(Service):
         :rtype: iterable or None
         """
         def _log_synced(result):
-            self.log.info('sync finished')
+            self.log.info('Sync finished')
             return result
 
         def _handle_invalid_auth_token_error(failure):
@@ -240,7 +228,7 @@ class IncomingMail(Service):
             self.stopService()
             emit_async(catalog.SOLEDAD_INVALID_AUTH_TOKEN, self._userid)
 
-        self.log.info('starting sync...')
+        self.log.info('Starting sync...')
         d = self._soledad.sync()
         d.addCallbacks(_log_synced, _handle_invalid_auth_token_error)
         return d
@@ -258,7 +246,7 @@ class IncomingMail(Service):
             fetched_ts = time.mktime(time.gmtime())
             num_mails = len(doclist) if doclist is not None else 0
             if num_mails != 0:
-                self.log.info("there are %s mails" % (num_mails,))
+                self.log.info('There are {0!s} mails'.format(num_mails))
             emit_async(catalog.MAIL_FETCHED_INCOMING, self._userid,
                        str(num_mails), str(fetched_ts))
             return doclist
@@ -282,7 +270,7 @@ class IncomingMail(Service):
         deferreds = []
         for index, doc in enumerate(doclist):
             self.log.debug(
-                'processing incoming message: %d of %d'
+                'Processing Incoming Message: %d of %d'
                 % (index + 1, num_mails))
             emit_async(catalog.MAIL_MSG_PROCESSING, self._userid,
                        str(index), str(num_mails))
@@ -292,15 +280,15 @@ class IncomingMail(Service):
             # TODO Compatibility check with the index in pre-0.6 mx
             # that does not write the ERROR_DECRYPTING_KEY
             # This should be removed in 0.7
+            # TODO deprecate this already
 
             has_errors = doc.content.get(fields.ERROR_DECRYPTING_KEY, None)
-
             if has_errors is None:
-                warnings.warn("JUST_MAIL_COMPAT_IDX will be deprecated!",
+                warnings.warn('JUST_MAIL_COMPAT_IDX will be deprecated!',
                               DeprecationWarning)
 
             if has_errors:
-                self.log.debug("Skipping message with decrypting errors...")
+                self.log.debug('Skipping message with decrypting errors...')
             elif self._is_msg(keys):
                 # TODO this pipeline is a bit obscure!
                 d = self._decrypt_doc(doc)
@@ -784,7 +772,7 @@ class IncomingMail(Service):
             else:
                 self.log.debug("No valid url on OpenPGP header %s" % (url,))
         else:
-            self.log.debug("There is no url on the OpenPGP header: %s"
+            self.log.debug('There is no url on the OpenPGP header: %s'
                            % (header,))
         return False
 
@@ -843,12 +831,10 @@ class IncomingMail(Service):
         self.log.info('Adding message %s to local db' % (doc.doc_id,))
 
         def msgSavedCallback(result):
+
             if empty(result):
                 return
 
-            for listener in self._listeners:
-                listener(result)
-
             def signal_deleted(doc_id):
                 emit_async(catalog.MAIL_MSG_DELETED_INCOMING,
                            self._userid)
diff --git a/src/leap/bitmask/mail/mail.py b/src/leap/bitmask/mail/mail.py
index 8cc01e2..92435fd 100644
--- a/src/leap/bitmask/mail/mail.py
+++ b/src/leap/bitmask/mail/mail.py
@@ -970,6 +970,10 @@ class Account(object):
         return d
 
     def add_mailbox(self, name, creation_ts=None):
+        return self.adaptor.atomic.run(
+            self._add_mailbox, name, creation_ts=creation_ts)
+
+    def _add_mailbox(self, name, creation_ts=None):
 
         if creation_ts is None:
             # by default, we pass an int value
@@ -1004,6 +1008,10 @@ class Account(object):
         return d
 
     def delete_mailbox(self, name):
+        return self.adaptor.atomic.run(
+            self._delete_mailbox, name)
+
+    def _delete_mailbox(self, name):
 
         def delete_uid_table_cb(wrapper):
             d = self.mbox_indexer.delete_table(wrapper.uuid)
@@ -1017,6 +1025,10 @@ class Account(object):
         return d
 
     def rename_mailbox(self, oldname, newname):
+        return self.adaptor.atomic.run(
+            self._rename_mailbox, oldname, newname)
+
+    def _rename_mailbox(self, oldname, newname):
 
         def _rename_mbox(wrapper):
             wrapper.mbox = newname
@@ -1035,6 +1047,10 @@ class Account(object):
         :rtype: deferred
         :return: a deferred that will fire with a MessageCollection
         """
+        return self.adaptor.atomic.run(
+            self._get_collection_by_mailbox, name)
+
+    def _get_collection_by_mailbox(self, name):
         collection = self._collection_mapping[self.user_id].get(
             name, None)
         if collection:
@@ -1056,8 +1072,7 @@ class Account(object):
         :rtype: MessageCollection
         """
         # get a collection of docs by a list of doc_id
-        # get.docs(...) --> it should be a generator. does it behave in the
-        # threadpool?
+        # get.docs(...) --> it should be a generator
         raise NotImplementedError()
 
     def get_collection_by_tag(self, tag):
diff --git a/src/leap/bitmask/mail/smtp/bounces.py b/src/leap/bitmask/mail/smtp/bounces.py
index 8260c1b..608d87d 100644
--- a/src/leap/bitmask/mail/smtp/bounces.py
+++ b/src/leap/bitmask/mail/smtp/bounces.py
@@ -84,6 +84,8 @@ class Bouncer(object):
 
 def bouncerFactory(soledad):
     user_id = soledad.uuid
+    # TODO should reuse same account that is used in other places, otherwise
+    # new mail in here won't be notified.
     acc = Account(soledad, user_id)
     d = acc.callWhenReady(lambda _: acc.get_collection_by_mailbox(INBOX_NAME))
     d.addCallback(lambda inbox: Bouncer(inbox))