Implement FastAPI application with uv-based Docker setup and search endpoint

[Copilot]

Adds a FastAPI service with Docker deployment using uv package manager, implementing a search endpoint that accepts ID parameters.

Application Structure

• Factory pattern: create_app() in app/main.py instantiates the FastAPI application
• Routes: Separated into app/routes.py using APIRouter
  • GET / - Service health/info
  • GET /search?id=<id> - Search by ID

# app/main.py
def create_app() -> FastAPI:
    app = FastAPI(title="TableScanner", ...)
    app.include_router(router)
    return app

app = create_app()

# app/routes.py
router = APIRouter()

@router.get("/search")
async def search(id: str = Query(...)):
    return {"query_id": id, "status": "success", ...}

Docker Setup

• Base image: ghcr.io/astral-sh/uv:python3.14-alpine
• Dependencies: fastapi, uvicorn, minio, KBUtilLib installed via uv
• Docker Compose: Service on port 8000 with health checks and volume mounting

Dependencies

Managed through both requirements.txt and pyproject.toml:

• fastapi ≥0.109.0
• uvicorn[standard] ≥0.27.0
• minio ≥7.2.0
• KBUtilLib (KBase internal library)

Original prompt

Fastapi with dockerfile and docker-compose.
uv install fastapi KBUtilLib minio
one route with endpoint called search that takes an ID

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[Copilot]

Pull request overview

This PR implements a FastAPI application called TableScanner with Docker deployment using the uv package manager. It introduces a basic web service with two endpoints: a root health check endpoint and a search endpoint that accepts ID parameters.

Key Changes:

• Added FastAPI application structure with factory pattern (app/main.py) and modular routing (app/routes.py)
• Implemented Docker setup using uv-based Alpine image with uv for dependency management
• Created search endpoint accepting ID query parameters and returning JSON responses

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 12 comments.

Show a summary per file

File	Description
pyproject.toml	Defines project metadata and dependencies (fastapi, uvicorn, minio) using modern Python packaging standards
Dockerfile	Creates containerized application using ghcr.io/astral-sh/uv:python3.13-alpine with uv sync for dependencies
docker-compose.yml	Configures service orchestration with port mapping, volume mounts, and health checks
app/main.py	Implements FastAPI factory pattern with application configuration and router inclusion
app/routes.py	Defines API endpoints including root service info and search functionality
app/init.py	Initializes app package with simple comment
README.md	Provides comprehensive documentation including setup, usage, API endpoints, and development instructions
.gitignore	Adds Python and uv-specific ignore patterns for development artifacts

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[Copilot]

The 'id' parameter lacks input validation. Consider adding validation for the format, length, or allowed characters of the ID to prevent potential issues with malformed inputs. FastAPI's Query parameter supports min_length, max_length, and regex patterns for validation.

Suggested change

	def search(id: str = Query(..., description="ID to search for")):
	def search(
	id: str = Query(
	...,
	description="ID to search for",
	min_length=1,
	max_length=32,
	regex="^[a-zA-Z0-9_-]+$"
	)
	):

[Copilot]

The PR description states dependencies should include KBUtilLib, but it's commented out in pyproject.toml. This creates an inconsistency between the documented dependencies and the actual configuration. Either uncomment this dependency with appropriate version constraints or update the documentation to reflect that it's intentionally excluded.

Suggested change

	#"KBUtilLib", # KBase internal library - version managed by KBase infrastructure
	"KBUtilLib", # KBase internal library - version managed by KBase infrastructure

[Copilot]

The 'version' field in docker-compose.yml is deprecated and should be removed. Docker Compose v2 no longer requires or uses the version field, and its presence is now obsolete.

Suggested change

version: '3.8'

[Copilot]

Running 'uv sync' without copying a lock file (uv.lock) means dependencies will be resolved at build time, potentially leading to non-reproducible builds. Consider adding uv.lock to version control and copying it before running uv sync to ensure consistent dependency versions across builds.

Suggested change

	COPY pyproject.toml /app/pyproject.toml
	COPY pyproject.toml /app/pyproject.toml
	COPY uv.lock /app/uv.lock

[Copilot]

The documentation references 'requirements.txt' for local development, but this file doesn't exist in the repository. The project uses pyproject.toml for dependency management. Update the installation command to use 'uv sync' or 'pip install .' instead.

[Copilot]

The minimum version constraint for uvicorn is set to 0.38.0, but this version does not exist. Uvicorn versions are currently in the 0.3x range (e.g., 0.30.x, 0.31.x). This will cause installation failures.

Suggested change

	"uvicorn>=0.38.0",
	"uvicorn>=0.30.0",

[Copilot]

The root endpoint is defined as async but doesn't perform any asynchronous operations. For consistency with the search endpoint at line 23, which is not async, this should either be made synchronous or the search endpoint should be made async to maintain a consistent pattern.

Suggested change

	async def root():
	def root():

[Copilot]

The search endpoint lacks test coverage. Consider adding tests to verify the endpoint correctly handles valid IDs, missing ID parameters, and different ID formats to ensure the API behaves as expected.

[Copilot]

The README documents that 'requirements.txt' manages dependencies, but the project uses pyproject.toml. This creates confusion about the actual dependency management approach. Update the documentation to reflect that pyproject.toml is the source of truth for dependencies.

[Copilot]

The Dockerfile uses Python 3.13, while pyproject.toml specifies requires-python >= 3.9. Consider aligning these to use a more widely-adopted Python version like 3.11 or 3.12, as Python 3.13 is relatively new and may have compatibility issues with some dependencies.

Suggested change

	FROM ghcr.io/astral-sh/uv:python3.13-alpine
	FROM ghcr.io/astral-sh/uv:python3.12-alpine