Chalice is a framework for developing serverless applications using AWS Lambda and other Amazon Web Services. It provides a development model for defining HTTP endpoints, event handlers and scheduled functions without requiring developers to manage the underlying servers.
Applications are organised around decorated functions that respond to specific requests or events. Chalice coordinates the AWS resources needed to run those functions and provides facilities for configuring and managing application deployments.
The framework can be used for REST APIs, event-driven processing and automated tasks. Its integrations with AWS services make it particularly useful for applications already operating within the Amazon cloud environment.
This is free and open source software.
Key Features
- Decorator-based routing for HTTP APIs using Amazon API Gateway and AWS Lambda.
- Support for REST API endpoints with path parameters, query values and request bodies.
- Lambda event handlers for Amazon S3, SNS, SQS and other AWS services.
- Scheduled functions using event-based and cron-style expressions.
- WebSocket API support through Amazon API Gateway.
- Authorisation using IAM, Cognito and custom Lambda authorisers.
- Automatic IAM policy generation for supported application resources.
- Blueprints for organising application handlers into reusable components.
- Application middleware for processing requests and event sources.
- Support for pure Lambda functions that do not expose HTTP endpoints.
- Application stages for maintaining separate deployment configurations.
- Integration with AWS CloudFormation, Terraform and the AWS Cloud Development Kit.
- Configurable logging, custom domains and environment variables.
- Testing facilities for application routes and event handlers.
Website: github.com/aws/chalice
Support:
Developer: James Saryerwinnie, John Carlyle and contributors
License: Apache License 2.0
Chalice is written in Python. Learn Python with our recommended free books and free tutorials.
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