Summary:
Make Herald conditions and actions more resilient (see discussion in D12896). This protects against invalid rules, which may have been valid in the past but are no longer valid. Specifically:
- If a rule has an invalid field, the conditions fail and the actions do not execute.
- The transcript shows that the rule failed because of an invalid field, and points at the issue.
- If a rule has an invalid action, that action fails but other actions execute.
- The transcript shows that the action failed.
- Everything else (particularly, other rules) continues normally in both cases.
- The edit interface is somewhat working when editing an invalid rule, but it could use some further improvements.
Test Plan:
# Ran this rule on a differential revision and saw the rule fail in the transcript.
# Was able to submit a differential without receiving an `ERR-CONDUIT-CORE`.
# Edited the Herald rule using the UI and was able to save the rule succesfully.
# Ran this rule on a differential revision and saw one success and one failure in the transcript.
# Was able to submit a differential without receiving an `ERR-CONDUIT-CORE`.
# Edited the Herald rule using the UI. Clicking save caused a `HeraldInvalidActionException` to be thrown, but maybe this is okay.
Differential Revision: http://phabricator.local/D41
f5c9b9c014