Folks - there's been plenty of discussion on the ProgressSupport changes
we need for the IPS GUI as part of an IPS Client API.
We have hacked the IPS GUI to get it working with the current IPS,
http://cr.opensolaris.org/~migi/working_ips_gui_30_jul/
<http://cr.opensolaris.org/%7Emigi/working_ips_gui_30_jul/>
but want to put in place an API so we can avoid the need for these hacks
in the future. This involves changes to ProgressTracker, adding Cancel
Support and an API for clients to use. We also need standardization on
Exceptions as they form part of the API interface boundary for clients
and an agreed logging mechanism so clients can override how the API logs
errors, warnings and so on.
Progress Tracking:
Summary:
1. Provide a patch which exercises the new proposed ProgressTracking
functionality in the IPS GUI. This can now be done as we have a working
IPS GUI.
2. Provide Progress by Filename. There has been some discussion about
this. We would propose feeding back to the ProgressTracker a FileList
for each hash that is being downloaded and then its up to the client to
decide how to display these multiple files for the single download object.
3. Provide Progress for a given File by chunk size.
Currently we can only get information on the amount of data that's been
downloaded after each file has finished its download. For a large file
this does not allow us to give useful progress, such as we'd see in
Synaptic's download dialog in Ubuntu or Firefox. Applications such as
Firefox and Synaptic provide file based progress and if the network goes
down they will stop progressing but that is entirely expected and is
behavior a user is used to on the desktop.
The user should be given progress as each file is being downloaded, to
some agreed chunk size. We have no idea how to do this. Could we combine
this with the cancel support that has been discussed by Danek and others?
The existing webrev is here,
http://cr.opensolaris.org/~migi/ips_progress_changes/
<http://cr.opensolaris.org/%7Emigi/ips_progress_changes/>
but now that we have a working IPS GUI we'll post another webrev which
exercises the ProgressTracker changes using the fixed IPS GUI.
JR & Michal
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