Please review the documentation in class Source for implementing new Sources about sup

[gauteh]

Yup, a lot has happened since that documentation was written.. I'd suggest starting from mbox or maildir and take it from there (mbox is probably the easiest). @hsanson has been experimenting with a GMail source.

[ppetr]

Thanks for help. To clarify, my aim is to use sup with GMail on multiple computers with locally cached messages. For this to work correctly I need to synchronize labels back to GMail. Since this seems problematic with maildir, my idea is to:

• Store emails in a SQLite database. This way I'll get ACID properties for free, as well as the possibility to add additional information to messages, such as labels. Another bonus are simple backups - everything is in one file.
• Write a simple GMail-IMAP synchronization tool that only downloads messages from All mail to the database and synchronizes labels back using GMail extensions. (There could be some time limit like
  "download only messages newer than 1 year or so.)
• Modify sup so that it can use this SQLite store and store (or copy) labels into it.

This also solves the awkward intermediate step when using OfflineIMAP that labels are first converted into IMAP folders, downloaded locally to multiple folders and then again converted to labels for sup (and sup needs to check multiple folders). Using instead one big folder that understand labels seems much cleaner.

(Perhaps it would be worth to store GMail thread ID too?)

[gauteh]

Hi Petr,

Take a look at Horacio's work, he has gotten pretty far doing just that!
But some of the label stuff can be very slow for large volumes atm.

His gmail.rb is well-written and relatively easy to understand:
https://github.com/hsanson/sup/tree/gmail_source

His last message to sup-devel:
http://rubyforge.org/pipermail/sup-devel/2013-July/001415.html

Also, feel free to sign up to the devel mailing list:
http://rubyforge.org/mailman/listinfo/sup-devel

or the users list, sup-talk: http://rubyforge.org/mailman/listinfo/sup-talk

Regards, Gaute

On 29. juli 2013 09:44, Petr Pudlák wrote:

Thanks for help. To clarify, my aim is to use sup with GMail on
multiple computers with locally cached messages. For this to work
correctly I need to synchronize labels back to GMail. Since this
seems problematic with maildir, my idea is to:

• Store emails in a SQLite database. This way I'll get ACID
  properties for free, as well as the possibility to add additional
  information to messages, such as labels. Another bonus are simple
  backups - everything is in one file. - Write a simple GMail-IMAP
  synchronization tool that only downloads messages from All mail to
  the database and synchronizes labels back using GMail
  extensions.

(There could be some time limit like "download only messages newer
than 1 year or so.) - Modify sup so that it can use this SQLite
store and store (or copy) labels into it.

This also solves the awkward intermediate step when using
OfflineIMAP that labels are first converted into IMAP folders,
downloaded locally to multiple folders and then again converted to
labels for sup (and sup needs to check multiple folders). Using
instead one big folder that understand labels seems much cleaner.

(Perhaps it would be worth to store GMail thread ID too?)

--- Reply to this email directly or view it on GitHub:
#113 (comment)

[gauteh]

Fixed in #114.