git-annex/doc/design/assistant/progressbars.mdwn
2012-11-25 13:49:22 -04:00

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Currently, git-annex takes a very lazy approch to displaying
progress into. It just lets rsync or whatever display the progress
for it, in the terminal.
Something better is needed for the [[webapp]]. There needs to be a
way for the web app to know what the current progress is of all transfers.
This is one of those potentially hidden but time consuming problems.
## downloads
* Watch temp file as it's coming in and use its size.
Can either poll every .5 seconds or so to check file size, or
could use inotify. **done**
## uploads
Each individual remote type needs to implement its own support for calling
the MeterUpdate callback as the upload progresses.
* git: **done**
* rsync: **done**
* directory: **done**
* web: Not applicable; does not upload
* webdav: **done**
* S3: **done**
* glacier: **done**
* bup: TODO
* hook: Would require the hook interface to somehow do this, which seems
too complicated. So skipping.
## communication
It may be worth using a better communication channel than files on disk for
the transfer progress. Shared memory could be used, or http posts to the
webapp.