v1.4.0

Changes

Official Lambda Layer

We now provide an official Lambda Layer via AWS Serverless Application Repository (SAR) App. SAR App follows semantic versioning, and it is synchronized with what's published on PyPi.

SAR App	ARN
aws-lambda-powertools-python-layer	arn:aws:serverlessrepo:eu-west-1:057560766410:applications/aws-lambda-powertools-python-layer

A big thanks to @am29d for the implementation, and to Keith Rosario, a long standing contributor, and beta customer, who created the first Layers through his KLayers project - Lambda Layers for Python on GitHub before.

Auto-complete for SSMProvider on Parameters utility

Thanks to @michaelbrewer, SSMProvider within Parameters utility now have decrypt and recursive parameters correctly defined to support autocompletion.

Tracer support to not capture response as metadata

For customers returning sensitive information from their methods and Lambda handlers, Tracer decorators capture_method and capture_lambda_handler now support capture_response=False parameter to override this behaviour.

Cold start metric bugfix

This release ensures Metrics utility creates a Cold Start metric with dedicated CloudWatch dimensions function_name and service to explicitly separate Application metrics from System metrics.
Previously, when capturing cold start metric via capture_cold_start_metric parameter, we would add ColdStart metric to an existing metric set along with function_name as a dimension. This caused the problem of Application metrics having data points in two separate metrics with the same name, since one of them would have an additional function_name dimension in the event of a cold start.

Minor improvements to docs

Content in Tracer and Logger have been reordered to match what customers are looking for. Tracer docs have less main sections to improve navigation, a new section named Patching Modules, and a note for customers capturing sensitive information they might not want Tracer to capture it.

🌟 Minor Changes

• feat: add workflow to trigger external pipeline for publishing lambda layers (#129) by @am29d
• feat: option to disallow tracer to capture response as metadata (#128) by @heitorlessa

📜 Documentation updates

• docs: readability improvements (#130) by @heitorlessa

🐛 Bug and hot fixes

• fix: split cold start metric from application metrics to prevent duplicate app metrics (#126) by @heitorlessa
• fix(ssm): Make decrypt an explicit option and refactoring (#123) by @michaelbrewer

This release was made possible by the following contributors:

@am29d, @heitorlessa and @michaelbrewer