Non-descriptive errors in web-interface after upload of an unsupported file format

[sgielen]

After uploading a file of MP3 format to a Maried whose gstreamer library does not support MP3, I get the following error printed to standard-out. On the web interface itself, I just get "Failed". It would be better if some error like "File format audio/mpeg not supported" would be displayed in the web-interface instead of just "Failed". In that case, the stack trace can also be changed to give more relevant information, such as "User %s tried to upload a file of format %s, but this format was not supported.\n%s" % (username, format, filename).

8221 INFO    cometServer.bmh2wvRE:Download started
** Message: don't know how to handle audio/mpeg, mpegversion=(int)1, layer=(int)3
11883 ERROR   gstMediaInfo:Gst: There is no codec present that can handle the stream's type. gstplaybasebin.c(2322): gboolean prepare_output(GstPlayBaseBin *) (): /GstPlayBin:playbin
11883 ERROR   cometServer:Uncaught exceptionTraceback (most recent call last):
  File "/Users/sjors/Projecten/marietje/install/py/sarah/socketServer.py", line 45, in _handle_connection
    handler.handle()
  File "/Users/sjors/Projecten/marietje/install/py/joyce/comet.py", line 36, in handle
    self.server, self.l)
  File "/Users/sjors/Projecten/marietje/install/py/joyce/comet.py", line 47, in __init__
    BaseHTTPRequestHandler.__init__(self, request, addr, server)
  File "/sw/lib/python2.7/SocketServer.py", line 638, in __init__
    self.handle()
  File "/sw/lib/python2.7/BaseHTTPServer.py", line 340, in handle
    self.handle_one_request()
  File "/sw/lib/python2.7/BaseHTTPServer.py", line 328, in handle_one_request
    method()
  File "/Users/sjors/Projecten/marietje/install/py/joyce/comet.py", line 97, in do_POST
    self._dispatch_stream(qs, ct)
  File "/Users/sjors/Projecten/marietje/install/py/joyce/comet.py", line 149, in _dispatch_stream
    self.server.dispatch_stream(token, stream, self)
  File "/Users/sjors/Projecten/marietje/install/py/joyce/comet.py", line 464, in dispatch_stream
    relay._handle_stream(rh, stream)
  File "/Users/sjors/Projecten/marietje/install/py/joyce/comet.py", line 224, in _handle_stream
    self.handle_stream(self.token, stream)
  File "/Users/sjors/Projecten/marietje/install/py/joyce/base.py", line 48, in handle_stream
    self.hub.handle_stream(token, stream, self)
  File "/Users/sjors/Projecten/marietje/install/py/joyce/base.py", line 77, in handle_stream
    c.handle_stream(stream)
  File "/Users/sjors/Projecten/marietje/install/py/maried/joyceRS.py", line 35, in handle_stream
    mf = self.server.desk.add_media(stream, self.user)
  File "/Users/sjors/Projecten/marietje/install/py/maried/core.py", line 141, in add_media
    self.collection.add(mediaFile, user, customInfo)
  File "/Users/sjors/Projecten/marietje/install/py/maried/mongo.py", line 178, in add
    info = mediaFile.get_info()
  File "/Users/sjors/Projecten/marietje/install/py/maried/core.py", line 67, in get_info
    ret = self.store.mediaInfo.get_info(stream)
  File "/Users/sjors/Projecten/marietje/install/py/maried/gstreamer.py", line 137, in get_info
    raise ValueError
ValueError