AWS Lambda layer building made easy
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.
- AWS CLI (Install & configure)
- Docker (Install)
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!