AWS Lambdas on FastAPI it is a Cli utilit that up & run your Python lambdas in local env based on AWS CloudFormation Template
Project description
AWS Lambdas on FastAPI - LoF
AWS Lambdas on FastAPI (LoF) is a command line tool that helps you fast & easy up & run your Python AWS Lambdas for tests and local development.
Pay attention, that this is only for Python lambdas.
It does not support any other programming languages.
How does it work?
Install
pip install lof
Now run lof & provide to it path to your template yaml file. Or you can run it from source dir with template.yaml without any args
How to use
lof
# or if path custom
lof --template example/template.yaml
You can choose that lambdas exclude from run by passing their names:
lof --template example/template.yaml --exclude=PostLambda2Function
To pass environment variables to Lambdas, use flag –env, you can pass variables in 2 formats - json format and ‘.env’ format. Both files as examples presented in example/ folder
lof --env=.env
# or
lof --env=vars.json
This mean, that lof will up & run all lambdas exclude this 2: PostTrafficHook & Roles
Demo
will be added soon
TODO
Add feature to call Authorizer & CORS lambdas handlers in local run.
Support JSON AWS Cloud Formation Template
Example
To try how LoF works you can use AWS CloudFormation template.yaml & Lambdas from example/ folder.
Issues & features request
Fill free to open Issues & report bugs. I will solve them as soon as possible.
Problem Context
On my current project I works a lot with AWS Lambdas & tries to up & run them with SAM local. And there is some issues especially when you work on the project with a big count of lambdas.
Some of them:
First of all it does not allow skip some lambdas form config
It build lambdas inside each docker container so it takes significant time to build/rebuild & up all containers (and you need up all containers if you want to have fast integration tests)
Both points in the mix make impossible to use SAM in weak developers envs like VDI, for example.
Changelog
v0.2.3
Possibility to send port & host to start several instances in same time.
v0.2.2
README.md is updated
Fixed Issue with lambdas in template, that does not have Events with Path (like S3 triggered lambdas)
Fixed issue with status code 204 - now it returns correct answer with no failes.
Added some tests
v0.2.1
Now LoF do not try/except lambdas errors
v0.2.0
Fixed status_code resend from lambda & JSON body response
v0.1.0
First version of Lambdas on FastApi. Based on AWS CloudFormation template it’s serve lambdas as FastAPI endpoints for local testing.
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