FastAPI API Endpoint with PostgreSQL and SQS Integration

This project consists of two services: an API and a worker. The API is built using FastAPI and allows writing log entries to a PostgreSQL database. The worker service integrates with Amazon SQS to offload the endpoint processing to a queue. The project utilizes AWS CDK (Cloud Development Kit) to deploy the necessary infrastructure, including Lambda functions, the database, and SQS.

Alembic is used for database migrations, ensuring a smooth and manageable database schema evolution.

Table of Contents

1. Requirements
2. Setup
3. Running the Project
4. Testing
5. Deployment
6. Make Commands
7. Project Structure
8. Testing the Live API

Requirements

To run this project, you need the following:

• Python 3.11
• Node.js 20
• Docker
• Virtualenv
• AWS CLI

For Docker, it is recommended to install Orb Stack from here or by running brew install orbstack.

For the rest of the requirements, it is recommended to use Nix. You can download Nix from here and then run the following command to set up the environment:

nix-shell -p python311 python311Packages.pip nodejs_20 zsh --run zsh

Setup

Installation

1. Clone the repository:

git clone git@github.com:cdragos/fast-log-queue.git
cd fast-log-queue

2. Set up the development environment:

make setup_dev

Running the Project

1. Start the FastAPI development server:

fastapi dev api/main.py

2. Run the project using Docker Compose:

docker compose up

Testing

To run the tests, use the following command:

make tests

Deployment

1. Configure AWS CLI:

npm i aws-cli
npm i aws-cdk
aws configure

2. For the first-time deployment, run:

make bootstrap

3. Deploy the CDK stack:

make deploy

Make Commands

The project includes several Make commands to simplify common tasks:

`make setup_dev`: Set up the development environment.
`make migrations`: Create a new Alembic migration.
`make upgrade`: Upgrade the database to the latest revision.
`make bootstrap`: Bootstrap the CDK stack.
`make deploy`: Deploy the CDK stack.
`make destroy`: Destroy the CDK stack.
`make test`: Run the unit tests.

Project Structure

.
├── api/                    # FastAPI API application code
├── worker/                 # Worker service code
├── cdk/                    # AWS CDK stack definition
├── alembic_migrations/     # Alembic migration scripts
├── shared/                 # Shared configuration and models
├── tests/                  # Test files for API and worker

Testing the Live API

To test the live API endpoint, you can use the following curl command:

curl -X POST "https://xw8f3zdndl.execute-api.us-east-1.amazonaws.com/logs" \
-H "Content-Type: application/json" \
-d '{
"message": "This is a test log entry",
"level": "INFO"
}'

To check the logs from the database, you can use the following curl command:

curl https://xw8f3zdndl.execute-api.us-east-1.amazonaws.com/logs