D28162: [calendar] Implement SyncToken for Calendar service

[Igor Poboiko]

poboiko created this revision.
poboiko added a reviewer: dvratil.
Herald added a project: KDE PIM.
poboiko requested review of this revision.

REVISION SUMMARY
  This is an implementation of a `syncToken` Google API feature (see T8376: [Calendar] Implement support for syncToken <https://phabricator.kde.org/T8376>, and
  https://developers.google.com/calendar/v3/reference/events/list) which is a
  native way to perform incremental updates.
  
  When `EventFetchJob` is created, we can provide it with a token by calling
  `job->setSyncToken(token)`, which will be used as a parameter for fetching.
  Note: some of the parameters are incompatible with `syncToken` (`timeMin`,
  `timeMax`, `updatedMin`, see API link above), so if token is provided, those
  parameters get ignored.
  
  When the job is finished, the next sync token can be obtained via
  `job->syncToken()`. This token then can be used for the next `EventFetchJob`.

TEST PLAN
  1. Create an `EventFetchJob` with no `syncToken`
  2. When job is finished, fetch its `syncToken`
  3. Create a new job, using previous `syncToken`
  4. Only incremental changes are obtained

REPOSITORY
  R477 KGAPI Library

BRANCH
  syncToken (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D28162

AFFECTED FILES
  src/calendar/calendarservice.cpp
  src/calendar/eventfetchjob.cpp
  src/calendar/eventfetchjob.h
  src/core/types.h

To: poboiko, dvratil
Cc: kde-pim, fbampaloukas, dcaliste, dvasin, rodsevich, winterz, vkrause, mlaurent, knauss, dvratil
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/kde-pim/attachments/20200320/44e17e12/attachment.html>