Check for non-empty length of previous metadata #4182
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
If there is no prior alert state for a rule/entity pair, an empty db result struct is passed around in the evaluation context. Due to a change from an inner join to a left join, the field's type changed from a pointer to a byte slice to just a byte slice. In the empty case, this means that the alert metadata is represented by an empty byte slice instead of a nil. Change the code to check for empty length in addition to nil-ness.
Summary
Provide a brief overview of the changes and the issue being addressed.
Explain the rationale and any background necessary for understanding the changes.
List dependencies required by this change, if any.
Fixes #(related issue)
Change Type
Mark the type of change your PR introduces:
Testing
Outline how the changes were tested, including steps to reproduce and any relevant configurations.
Attach screenshots if helpful.
Review Checklist: