sejalv / serverless-ml-workshop

Deployment of ML models with Serverless APIs (AWS Lambda) and Docker

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Serverless ML Workshop

This workshop focusses on deployment of ML models with Serverless APIs (AWS Lambda) and Docker. We'll learn how to:

  • Train and serialize a model inside a container
  • Package the service in an image
  • Serve the model with serverless API
  • Build, Test, and Deploy, with CI/CD workflow

Technologies

  • Docker + ECR: Container & Registy
  • AWS Lambda: Serving API
  • SAM: Serverless Framework (optional)
  • GitHub Actions: CI/CD

Project Structure

|-- service
     |-- app.py: source code lambda handler
     |-- train.py: to train the model
     |-- Dockerfile: to build the Docker image
     |-- requirements.txt: dependencies
|-- tests
     |-- unit
          |--test_handler.py: unit test/s for lambda handler
|-- samconfig.toml: configured by SAM
|-- template.yaml: A template that defines the application's AWS resources.

Pre-requisites

Setup

$ aws ecr create-repository --repository-name <repo-name> [--image-scanning-configuration scanOnPush=true]

Steps

Build

  1. Using Docker
$ docker build -t serverless-ml ./service
  1. Using SAM
$ sam build

The processed template file is saved in the .aws-sam/build folder.

Testing locally

  1. Using Docker
$ docker run -p 8080:8080 serverless-ml

$ curl -XPOST "http://localhost:8080/2015-03-31/functions/function/invocations" -d '{"body": {"data": ".10"}}'
  1. Using SAM
$ sam local start-api

$ curl -XPOST http://127.0.0.1:3000/classify -H 'Content-Type: application/json' -d '{"data":".10"}'

Unit tests

Tests are defined in the tests folder in this project. Use PIP to install the pytest and run unit tests from your local machine.

$ pip install pytest pytest-mock --user
$ python -m pytest tests/ -v

Deployment

  1. Using Docker
$ aws ecr get-login-password | docker login --username AWS --password-stdin ${AWS_ACCOUNT}.dkr.ecr.eu-central-1.amazonaws.com

$ docker push ${AWS_ACCOUNT}.dkr.ecr.eu-central-1.amazonaws.com/serverless-ml:latest
  1. Using SAM
sam deploy --guided

Cleanup

To delete the sample application that you created, use the AWS CLI. Assuming you used your project name for the stack name, you can run the following:

aws cloudformation delete-stack --stack-name <stack-name>

Resources

Workshops built on new AWS features:

The Docker-based workflow (multi-stage build) is based on:

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Deployment of ML models with Serverless APIs (AWS Lambda) and Docker


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Language:Python 90.0%Language:Dockerfile 10.0%