Avoid db warnings for too-large events

[Crag Wolfe]

The problem with the fix for https://bugs.launchpad.net/heat/+bug/1493858 is that even though we catch the db exception (perhaps multiple times), we still get a log message (perhaps multiple times) beginning with "ERROR oslo_db.sqlalchemy.exc_filters [-] DBAPIError exception wrapped from..." *with* the payload of what it wasn't able to store (at least 2^16 bytes). This tends to grab the attention of operators who can waste a lot of time on it, even if it is not a "real" problem.

[Crag Wolfe (cwolfe)]

The related bug, https://bugs.launchpad.net/heat/+bug/1524013 , targets coming up with a data model change so that we can store really large events.

This bug is just concerned with avoiding the needless oslo_db error message (no data model change).

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/259274
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=b48452fc9acd4e4c9f8fd83ca1fc9782635cec36
Submitter: Jenkins
Branch: master

commit b48452fc9acd4e4c9f8fd83ca1fc9782635cec36
Author: Crag Wolfe <email address hidden>
Date: Thu Dec 17 23:28:15 2015 -0500

    Do not try to save event resource if too big for db column

    Change-Id: Idedcfb5bf6678cd24990d1503c223ea9a9ac41cf
    Closes-Bug: #1552431

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/liberty
Review: https://review.openstack.org/290916

[Thierry Carrez (ttx)]

This issue was fixed in the openstack/heat 6.0.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/290916
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=17c6422cd4b495c41c0d3cee5e30c337361bad8e
Submitter: Jenkins
Branch: stable/liberty

commit 17c6422cd4b495c41c0d3cee5e30c337361bad8e
Author: Crag Wolfe <email address hidden>
Date: Thu Dec 17 23:28:15 2015 -0500

    Do not try to save event resource if too big for db column

    Change-Id: Idedcfb5bf6678cd24990d1503c223ea9a9ac41cf
    Closes-Bug: #1552431
    (cherry picked from commit b48452fc9acd4e4c9f8fd83ca1fc9782635cec36)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/heat 5.0.2 release.