[ews-app] Set db_constraint to False for Foreign Keys

• Component: Tools / Tests
• Status: RESOLVED FIXED

[Aakash Jain]

Steps table have a ForeignKey build_uid. Since the Build and step events from Buildbot can arrive out of order, we might get step data before build data. In that case, we still want to save the step data.

For sqlite Django seems to allow this by default. However, after switching to PostgreSQL, Django is throwing below exception. We should set ForeignKey.db_constraint=False to allow this condition.


    Step(step_uid, build_uid, result, state_string, started_at, complete_at).save()
  File "/Library/Python/2.7/site-packages/django/db/models/base.py", line 808, in save
    force_update=force_update, update_fields=update_fields)
  File "/Library/Python/2.7/site-packages/django/db/models/base.py", line 838, in save_base
    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
  File "/Library/Python/2.7/site-packages/django/db/transaction.py", line 223, in __exit__
    connection.commit()
  File "/Library/Python/2.7/site-packages/django/db/backends/base/base.py", line 262, in commit
    self._commit()
  File "/Library/Python/2.7/site-packages/django/db/backends/base/base.py", line 236, in _commit
    return self.connection.commit()
  File "/Library/Python/2.7/site-packages/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/Library/Python/2.7/site-packages/django/db/backends/base/base.py", line 236, in _commit
    return self.connection.commit()
IntegrityError: insert or update on table "ews_step" violates foreign key constraint "ews_step_build_uid_3e89afad_fk_ews_build_uid"
DETAIL:  Key (build_uid)=(1_336) is not present in table "ews_build".

[Aakash Jain]

Created attachment 365962 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 365962 [details]
Patch

Clearing flags on attachment: 365962

Committed r243502: <https://trac.webkit.org/changeset/243502>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Radar WebKit Bug Importer]

<rdar://problem/49278115>