ObjectChooser displays USB media files, but fails to access file (datastore traceback)

[garycmartin]

Using the ObjectChooser to open a file from external USB media fails to open a selected file with the below (datastore) traceback. Tested with ImageViewer and Write (inserting an image) using latest sugar-jhbuild.

1251299807.015424 DEBUG root: ObjectChooser.__chooser_response_cb: dbus.String(u'/media/USB/misc file backups/Getting involved icons/Developer3.png')
1251299807.047768 DEBUG root: datastore.get
1251299807.050838 DEBUG root: dbus_helpers.get_properties: /media/USB/misc file backups/Getting involved icons/Developer3.png
Traceback (most recent call last):
  File "/home/garycmartin/sugar-jhbuild/install/share/sugar/activities/Write.activity/toolbar.py", line 186, in _image_cb
    chooser.pick(what=chooser.IMAGE, cb=cb)
  File "/home/garycmartin/sugar-jhbuild/install/share/sugar/activities/Write.activity/port/chooser.py", line 49, in pick
    jobject = chooser.get_selected_object()
  File "/home/garycmartin/sugar-jhbuild/install/lib/python2.6/site-packages/sugar/graphics/objectchooser.py", line 102, in get_selected_object
    return datastore.get(self._object_id)
  File "/home/garycmartin/sugar-jhbuild/install/lib/python2.6/site-packages/sugar/datastore/datastore.py", line 144, in get
    metadata = dbus_helpers.get_properties(object_id)
  File "/home/garycmartin/sugar-jhbuild/install/lib/python2.6/site-packages/sugar/datastore/dbus_helpers.py", line 78, in get_properties
    return _get_data_store().get_properties(uid, byte_arrays=True)
  File "/usr/lib/python2.6/site-packages/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/python2.6/site-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Python.IOError: Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/home/garycmartin/sugar-jhbuild/install/lib/python2.6/site-packages/carquinyol/datastore.py", line 271, in get_properties
    metadata = self._metadata_store.retrieve(uid)
  File "/home/garycmartin/sugar-jhbuild/install/lib/python2.6/site-packages/carquinyol/metadatastore.py", line 39, in retrieve
    return metadatareader.retrieve(metadata_path, properties)
IOError: Couldn't open metadata directory /home/garycmartin/.sugar/default/datastore//m//media/USB/misc file backups/Getting involved icons/Developer3.png/metadata

[tomeu]

Looks good to me, thanks a lot!

[alsroot]

 http://git.sugarlabs.org/projects/sugar-base/repos/mainline/commits/d19d831f86944aed20929a09022455ca4efe0bbb
 http://git.sugarlabs.org/projects/sugar-toolkit/repos/mainline/commits/da678c6973c124c81f2365f93e0df6d3f93d995f

[alsroot]

Some activities relies on existing of ds fields like 'title'

[tomeu]

Makes sense, you can see a bigger list of common properties here:

 http://wiki.laptop.org/go/Low-level_Activity_API#Meta_Data

But activities shouldn't depend on any of them really being there.

[alsroot]

 http://git.sugarlabs.org/projects/sugar-toolkit/repos/mainline/commits/dc0701dacf24e81c78000e6ad6d3351bc3569da4

[alsroot]

To emulate missed parts of DSObject - optional file_path removing.

[alsroot]

 http://git.sugarlabs.org/projects/sugar-toolkit/repos/mainline/commits/dfc5513f86102fea29b8f6177f443774aa0ff7df