ASGI serverless adapters
Project description
Mangum
Documentation: https://erm.github.io/mangum/
Mangum is a library for using ASGI applications with FaaS platforms.
Requirements
Python 3.6+
Installation
$ pip3 install mangum
Dependencies
There are required/optional dependencies for specific platforms being used, but the base install does not have any hard requirements:
azure-functions - required for Azure Function support. Can be installed using:
$ pip3 install mangum[azure]
boto3, click - required for the AWS-specific CLI tools (this is NOT required in deployments):
$ pip3 install mangum[aws]
Everything can be installed with:
$ pip3 install mangum[full]
Supported Platforms
Only two platforms are currently supported, but if you'd like to see others, please open an issue.
AWS Lambda / API Gateway
To make an ASGI application compatible with AWS Lambda & AWS Gateway, wrap it in the AWSLambdaMiddleware:
# asgi.py
from mangum.platforms.aws.middleware import AWSLambdaMiddleware
from yourapp.app import app
handler = AWSLambdaMiddleware(app) # optionally set debug=True
For this example, you would need to specify your lambda event handler as asgi.handler.
Note: This platform middleware can also use an optional debug argument to return unhandled errors raised by the application. It should NOT be enabled outside of development.
Azure Functions
Similarly as above, wrap the application using the AzureFunctionMiddleware:
from mangum.platforms.azure.middleware import AzureFunctionMiddleware
from yourapp.app import app
handler = AzureFunctionMiddleware(app)
A basic quickstart guide for using Azure Functions with Mangum is outlined here.
Mangum CLI (experimental)
Experimental AWS packaging/deployment support. This requires installation of the optional dependencies for AWS:
$ pip install mangum[full]
It also requires:
- AWS CLI
- AWS credentials.
The available commands are briefly outlined below, but there is also a quickstart guide here:
-
mangum aws init- Create a new configuration template for an application. -
mangum aws build- Install the requirements and copy the application files into the build directory. -
mangum aws package- Package the local project to prepare for deployment. -
mangum aws deploy- Deploy the packaged application to AWS. -
mangum aws tail- Tail the last 10 minutes of CloudWatch for the function. -
mangum aws describe- Retrieve the API endpoints for the function. -
mangum aws validate- Validate the SAM template in the current configuration.
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