py-lambda-simulator

py-lambda-simulator is a Python library for running aws-lambda functions locally.

Installation

Use the package manager pip to install py-lambda-simulator.

pip install py-lambda-simulator

Usage

import asyncio
import json
from asyncio import run

from py_lambda_simulator.lambda_simulator import AwsSimulator
from py_lambda_simulator.sqs_lambda_simulator import SqsLambdaSimulator, SqsEvent, LambdaSqsFunc


async def example(simulator, aws_simulator):
    queue = aws_simulator.create_sqs_queue("queue-name")

    def sqs_handler(event: SqsEvent, context):
        print(event["Records"][0]["body"])

    simulator.add_func(LambdaSqsFunc(name="test-sqs-lambda", queue_name="queue-name", handler_func=sqs_handler))

    async def send_msg():
        while True:
            aws_simulator.get_sqs_client().send_message(
                QueueUrl=queue["queue_url"], MessageBody=json.dumps({"test": 123})
            )
            await asyncio.sleep(1)

    await asyncio.gather(simulator.start(), send_msg())


if __name__ == '__main__':
    _simulator = SqsLambdaSimulator()
    _aws_simulator = AwsSimulator()
    run(example(_simulator, _aws_simulator))

For more examples see the tests.

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

MIT