AWS Lambda Requests Wrapper

Request/Response wrapper for AWS Lambda with API Gateway.

Install

Install and update using pip.

$ pip install -U aws-lambda-requests-wrapper

Example

Converts the lambda_handler syntax:

import json

def lambda_handler(event, context):
    ...
    response = {"key": "value"}
    return {
        "statusCode": 200,
        "headers": {
            "Content-Type": "application/json"
        },
        "body": json.dumps(response)
    }

into this:

import json

from aws_lambda_requests_wrapper.lambda_handler import lambda_request_wrapper
from aws_lambda_requests_wrapper.models import Request
from aws_lambda_requests_wrapper.models import Response

@lambda_request_wrapper()
def lambda_handler(request: Request) -> Response:
    ...
    response = {"key": "value"}
    return Response(body=json.dumps(response))

or return a Pydantic model directly:

from pydantic import BaseModel

from aws_lambda_requests_wrapper.lambda_handler import lambda_request_wrapper
from aws_lambda_requests_wrapper.models import Request

class Model(BaseModel):
    model_id: int

@lambda_request_wrapper()
def get_pydantic_model(request: Request) -> Model:
    return Model(model_id=1)

Contributing

Contributions are welcome via pull requests.

First time setup

$ git clone git@github.com:DeveloperRSquared/aws-lambda-requests-wrapper.git
$ cd aws-lambda-requests-wrapper
$ poetry install
$ source .venv/bin/activate

Tools including black, mypy etc. will run automatically if you install pre-commit using the instructions below

$ pre-commit install
$ pre-commit run --all-files

Running tests

$ poetry run pytest

Links

• Source Code: https://github.com/DeveloperRSquared/aws-lambda-requests-wrapper/
• PyPI Releases: https://pypi.org/project/aws-lambda-requests-wrapper/
• Issue Tracker: https://github.com/DeveloperRSquared/aws-lambda-requests-wrapper/issues/