Connections in telepathy watcher cannot be accessed

[tch]

When the journal palettes are being created, it checks whether or not there are friends to be added to the send-to menu. This check is being done via the file_transfer_available helper.

The helper uses the telepathy connection watcher and, under some circunstances that I haven't been able to reproduce, the connections in the watcher cannot be reached via the DBus interface.

When this happens, an unhandled DBusException is thrown, breaking the palette. In other words, the journal palettes are not being displayed anymore until the shell session is restarted.

This issue was noticed running on Ubuntu 14.04.

[tch]

The error showed in the shell.log is:

tch@tch-nb:~$ tailf /home/tch/.sugar/default/logs/shell.log 
    friends_menu = FriendsMenu()
  File "/usr/lib/python2.7/dist-packages/jarabe/journal/palettes.py", line 465, in __init__
    if filetransfer.file_transfer_available():
  File "/usr/lib/python2.7/dist-packages/jarabe/model/filetransfer.py", line 300, in file_transfer_available
    properties = properties_iface.GetAll(CONNECTION_INTERFACE_REQUESTS)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name :1.15 was not provided by any .service filess

[tch]

I sent a PR [1] to make the helper more robust, so at least it won't break the journal palettes.

[1] ​https://github.com/sugarlabs/sugar/pull/570

[quozl]

• is in 0.107.0