The demo project which is used FastAPI as a backend service.

Source Code: https://github.com/lpthong90/fastapi-search-engine

Search Engine - FastAPI

The project is a simple microservice which populates the employee search directory for a HR company.

The following is filter options for the Search API:

Features:

Following are all functional and non-functional requirements which are allowed in this project.

Functional requirements:

• Only implement the search api.
• The service is containerized .
• The API information is sharable in an OPEN API format
• The API is unit tested
• No external library is used for rate-limiting .
• Authentication is included to make sure data not be leaked in the API.
• The project is implemented with Python/FastAPI.

Non-functional requirements

• You may not use any external dependencies or libraries (only standard library is allowed)
• You may use external testing libraries if you choose to write tests
• The application should execute correctly in a Linux (or UNIX-like) environment

Assumption

We have a list of assumptions:

• User is from an Organization.
• User has an Access-Token to authenticate when request to private api endpoints.
• Organization want to customize a list of columns to display.
• User from an organization can not search any employee of another organization.

As initialized configuration, we have 3 users as following:

Requirements

docker 24.0.6+

docker-compose 3.7+

Test

$ docker build -t  test-search-engine -f Dockerfile.test .

$ docker run --rm test-search-engine

Installation

Run it

$ docker-compose up --build -d

Initialize data

Run migration:

$ docker exec app_1 /bin/sh -c ./migrate.sh

Generate data:

$ export DB_URL=postgresql://username:password@app_db/dev_db

$ docker exec -i app_db_1 psql -d $DB_URL < generate_data.sql

Check it

Open your browser at http://127.0.0.1:8000.

You will see the JSON response as:

{"Hello":"World"}

On the other hand, you can test search employee feature as following:

$ curl -X 'GET' \
  'http://localhost:8000/search?status=active&status=terminated&limit=10' \
  -H 'accept: application/json' \
  -H 'Access-Token: token_a'

You will see the JSON response as:

{
  "limit": 10,
  "has_next_page": true,
  "has_previous_page": false,
  "employees": [
    {
      "id": 5,
      "first_name": "first_name-45c48",
      "last_name": "last_name-cfcd2",
      "contact_info": "contact_info-c9f0f",
      "organization": "org-a",
      "department": "department-6",
      "position": "position-71",
      "location": "location-09",
      "status": "active"
    }
    ...
  ]
}

You can check with 3 access-tokens which are belong to 3 users respectively: token_a, token_b, token_c

Interactive API docs

Now go to http://127.0.0.1:8000/docs.

You will see the automatic interactive API documentation:

Sharable OpenAPI JSON file

Open your browser at http://127.0.0.1:8000/openapi.json.

You will see OpenAPI json format file: