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Justin Roberson dd9f30fcb0 lambda-promtail: Support SNS events (#9964) ... **What this PR does / why we need it**: Some use cases (such as S3 bucket notifications) are better suited for SNS rather than SQS when you need to send events to multiple destinations. Adding a little bit of extra parsing logic for SNS events allows directly connecting an SNS topic to the Lambda Promtail function and bypasses the extra complexity of the SQS queue. This lower complexity is very helpful in cross-AWS-account use cases like CloudTrail event forwarding. **Which issue(s) this PR fixes**: Fixes #<issue number> **Special notes for your reviewer**: - I just updated the SQS section of the docs to also reference SNS, since the functionality is basically identical. Happy to take suggestions on improvements there. Not sure if `CHANGELOG.md` needs to be updated as well or not. - This is semi-difficult to unit test since there isn't an existing test harness for event matching. Testing in situ on our own infrastructure seems to work. **Checklist** - [x] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [x] Documentation added - [x] Tests updated - [ ] `CHANGELOG.md` updated - [ ] If the change is worth mentioning in the release notes, add `add-to-release-notes` label - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` - [ ] For Helm chart changes bump the Helm chart version in `production/helm/loki/Chart.yaml` and update `production/helm/loki/CHANGELOG.md` and `production/helm/loki/README.md`. [Example PR](d10549e3ec)		3 years ago
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_index.md	lambda-promtail: Support SNS events (#9964)	3 years ago