Srce Cde
Published in

Srce Cde

AWS Lambda layer building made easy

Photo by Sigmund on Unsplash

The lambda layer allows you to add additional code such as libraries, dependencies for the deployed runtime within lambda functions. While working with python runtime we have used temporary on-demand EC2 instances to create & configure the lambda layer which was a tedious task. You can find the relevant blog on the same here.

However, to minimize the efforts & overhead of spinning temporary instance and setup, we started using this shell script, which helped to expedite the process of building, creating & publishing the lambda layer and all will happen just with a single command.To use this shell script you need to install & configure AWS CLI & Docker.

Prerequisites

  • AWS CLI (Install & configure)
  • Docker (Install)

Installation

Post configuration of AWS CLI & Docker, one-time installation of the shell script is required. Run below command for installation.

SCRIPT_INSTALL_LOC=/usr/local/bin/create-layer; curl https://raw.githubusercontent.com/srcecde/aws-lambda-layer-creator/main/create-layer.sh > $SCRIPT_INSTALL_LOC; chmod +x $SCRIPT_INSTALL_LOC

The above command will allow you to execute the script from any location and please note that this is a one-time configuration.

Lambda layer creation | Usage

To create the layer using the above script the command should be in the specified format.

create-layer layer-name python/nodejs-runtime package1 [package2,…]
  • create-layer - Command to invoke the script to create lambda layer
  • layer-name - Name of the lambda layer (Please make sure to follow the lambda layer naming convention)
  • python/nodejs-runtime -Mention the respective python/nodejs runtime
  • package - Name of the package, library that you want to install

Python runtime lambda layer example

For example, I want to create the lambda layer package for python runtime for pandas & NumPy

create-layer pandas-numpy-layer python3.9 numpy pandas

The above command will create the lambda layer package for pandas & NumPy and it will upload & create the lambda layer within your AWS account.

NodeJS runtime lambda layer example

For example, I want to create the lambda layer package for nodejs runtime for request & moment

create-layer request-moment-layer nodejs14.x request moment

The above command will create the lambda layer package for request & moment libraries and it will upload & create the lambda layer within your AWS account.

The time taken for configuration & creation of lambda layers is reduced drastically with this. You can go through the video as well.

I hope this will help to reduce the development time!

--

--

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store