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CLI tool for managing functions in AWS Lambda.

Project description

Deprecation Warning

Lambkin was designed as a simple tool for simple tasks. Today, it’s difficult to recommend over more functional systems such as Serverless and Apex. Please consider alternatives before getting too involved with Lambkin.

Lambkin

Lambkin is a CLI tool for generating and managing simple functions in AWS Lambda.

Supporting Node.js and Python, Lambkin generates skeleton functions, provides lightweight help for managing dependencies, and does its best to hide the complexity of publishing and running functions in Lambda.

Quick Start

Prerequisites

  • A valid ~/.aws/credentials file. eg.

    [default]
    aws_access_key_id = AKIAUAVOHGHOOWEEYIED
    aws_secret_access_key = 90kX2Y2bykTH9CpQFHCzN92tukYf26

    … or the equivalent environment variables (AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY).

  • A working virtualenv command if you will be writing Lambda functions in Python.

Installing

  • pip install lambkin

Examples

Create a new Python function from a basic template

lambkin create cool-func
cd cool-func
$EDITOR cool-func.py

…or a maybe you prefer Node.js

lambkin create cool-func --runtime=nodejs
cd cool-func
$EDITOR cool-func.js

Install packages and dependencies for a Python function

$EDITOR requirements.txt
lambkin build

Install packages and dependencies for a Node.js function

$EDITOR Makefile
lambkin build

Bundle up your function (with libraries) and send it to Lambda

lambkin publish --description 'The best function ever.'

Increase the timeout for a long-running function

lambkin publish --description 'Slow' --timeout=300

Increase the memory allocation for a function

lambkin publish --description 'Big' --memory=1024

Invoke the published function, right now!

lambkin run

Schedule the function to run at regular intervals

lambkin schedule --rate='10 minutes'

Remove the function from Lambda, but keep it locally

lambkin unpublish

Dependencies - pip and npm

Python functions get a requirements.txt file where you can specify dependencies. They will be installed into your function’s virtualenv by lambkin build.

For now, Node.js functions just get a Makefile. Nicer, more Node-ish dependency management is planned for the future.

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