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feat: support for structured scaffold in create command #970

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Description

This PR fixes #969

Summary

PR: Add Structured Scaffold Option to Robyn's Create Command

Description:

This PR introduces a new feature to Robyn's create command, allowing users to choose between two scaffold options:

  1. Simple Starter Kit – Ideal for minimal, quick-start projects.
  2. Structured Scaffold – A more opinionated setup, providing separation of concerns and enhanced organization for scaling projects.

Changes:

  • Updated the create command to prompt users with a new option:
    • Would you like the scaffold to be a simple starter kit or an opinionated structure?
  • The simple scaffold remains the same as before with options like Mongo, Postgres, SQLite, etc.
  • Added a structured scaffold with the following structure:
    • api/handlers (for route handlers)
    • middlewares (for middleware definitions)
    • adaptors (with models, selectors, mutators)
    • utils (helper functions like db.py)
    • devops (including Dockerfile, docker-compose)
    • Improved configuration management (e.g., conf.py, config.env).

Example Structured Scaffold:

├── no-db
│   ├── api
│   │   ├── handlers
│   │   │   ├── __init__.py
│   │   │   ├── probes.py
│   │   │   └── sample.py
│   │   └── middlewares
│   │       └── __init__.py
│   ├── conf.py
│   ├── config.env
│   ├── devops
│   │   ├── Dockerfile
│   │   ├── Dockerfile.src
│   │   └── docker-compose.yaml
│   ├── requirements.txt
│   ├── server.py
│   └── utils
│       └── __init__.py
└── sqlalchemy
    ├── adaptors
    │   ├── __init__.py
    │   ├── models.py
    │   ├── mutators
    │   │   └── __init__.py
    │   ├── schema.py
    │   └── selectors
    │       └── __init__.py
    ├── api
    │   ├── handlers
    │   │   ├── __init__.py
    │   │   ├── probes.py
    │   │   └── sample.py
    │   └── middlewares
    │       └── __init__.py
    ├── conf.py
    ├── config.env
    ├── devops
    │   ├── Dockerfile
    │   ├── Dockerfile.src
    │   └── docker-compose.yaml
    ├── requirements.txt
    ├── server.py
    └── utils
        ├── __init__.py
        └── db.py

PR Checklist

Please ensure that:

  • [*] The PR contains a descriptive title
  • [*] The PR contains a descriptive summary of the changes
  • [*] You build and test your changes before submitting a PR.
  • You have added relevant documentation
  • You have added relevant tests. We prefer integration tests wherever possible

Pre-Commit Instructions:

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@ashupednekar ashupednekar marked this pull request as draft September 25, 2024 17:29
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codspeed-hq bot commented Sep 25, 2024

CodSpeed Performance Report

Merging #970 will not alter performance

Comparing ashupednekar:feat_structured_scaffold (662c009) with main (06c487d)

Summary

✅ 116 untouched benchmarks

@ashupednekar ashupednekar changed the title Feat structured scaffold feat: support for structured scaffold in create command Sep 26, 2024
@ashupednekar ashupednekar marked this pull request as ready for review September 26, 2024 05:00
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have some follow up suggestions

Comment on lines +110 to +113
├── migrations
│   ├── README
│   ├── env.py
│   ├── script.py.mako
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I need to read more about this

Comment on lines +15 to +16
with patch("robyn.cli.os.makedirs") as mock_makedirs:
with patch("robyn.cli.shutil.copytree") as mock_copytree, patch("robyn.os.remove") as _mock_remove:
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why not move this to line 8 ?

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didn't follow...

added additional key in mock return value scaffold_type
and added two tests for the two possible values

Comment on lines +6 to +12
@router.get("/livez/")
def livez() -> str:
return "live"


@router.get("/healthz/")
def healthz() -> str:
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let's use more formal names here like

subrouter_healthcheck and subrouter_livecheck

Comment on lines 6 to 17
class SampleHandlers:
"""
note: the handles being grouped in a class like this is complete optional, and doesn't have any impact on routing
"""

@router.post("/one")
@staticmethod
def one(): ...

@router.get("/two")
@staticmethod
def two(): ...
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not a big fan of this syntax honestly.

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could we please change this

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should I remove the sample handlers class? it doesn't really serve any purpose as such.

Comment on lines +4 to +6
from robyn.helpers import discover_routes

app: Robyn = discover_routes("api.handlers")
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where is this present?

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robyn/helpers.py

? Directory Path: myproject
? Need Docker? (Y/N) Y
? Please choose if you'd like the scaffold to be a simple starter kit or an opinionated structure
Simple
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@ashupednekar , I don't see an update here

COPY . .
RUN pip install --no-cache-dir --upgrade -r requirements.txt --target=/workspace/deps

FROM gcr.io/distroless/python3-debian11
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could you explain a bit more here?

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This is a two stage commit...

  • takes python base image as builder
  • copies source and does pip install in this stage
  • second stage is gcr distroless debian 11 (https://github.com/GoogleContainerTools/distroless)
  • distroless is a minimal image meant for production usage which is regularly maintained and patched for security vulnerabilities, and comes with an added benefit of small size as it doesn't include stuff from base linux image that's not needed at runtime
  • we copy the site-packages dir, which is /workspace/deps in our case so that our dependencies are available
  • finally, we set pythonpath and add server.py to the image's CMD

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have some follow up suggestions

Comment on lines +132 to +138
from robyn.helpers import discover_routes
from robyn import Robyn

from utils.db import get_pool
from conf import settings

app: Robyn = discover_routes("api.handlers")
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we don't have a discover_routes function

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It's added in helpers as part of this PR...

def discover_routes(handler_path: str = "api.handlers") -> Robyn:
    mux: Robyn = Robyn(__file__)
    package = importlib.import_module(handler_path)
    for _, module_name, _ in pkgutil.iter_modules(package.__path__, package.__name__ + "."):
        module = importlib.import_module(module_name)
        logger.info(f"member: {module}")
        mux.include_router(module.router)
    return mux

Comment on lines +1 to +3
from .user import Base as user

metadata = [user.metadata]
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is this a standard pattern?

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yes, https://alembic.sqlalchemy.org/en/latest/autogenerate.html

alembic expects the model's sqlalchemy metadata to be passed in env.py
having it in models/init.py for better structure

which is used in alembic/env.py like so

from adaptors import models
target_metadata = models.metadata

Comment on lines +35 to +36
class Config:
orm_mode = True
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should we dedent it?

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the config? nope.... it's pydantic model config, it's supposed to be defined inline in the class definition
https://docs.pydantic.dev/1.10/usage/model_config/

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could you mention it in the code please?

Comment on lines +109 to +121
level = WARN
handlers = console
qualname =

[logger_sqlalchemy]
level = WARN
handlers =
qualname = sqlalchemy.engine

[logger_alembic]
level = INFO
handlers =
qualname = alembic
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what do the empty assignments mean here?

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These are alembic defaults, generated with alemic init migrations

The reason I chose to pre-run this and not leave it to users is so that we can make `migrations/env.py' changes to make is usable right away

Also, to standardize migrations directory structure

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@ashupednekar , since alembic is not a tool where I have direct experience. Could you add a readme?

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Should I add it in the scaffold, or should I add more docs ?

I've added what's needed to get started under example_app/index.mdx

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Done, added readme

# are written from script.py.mako
# output_encoding = utf-8

sqlalchemy.url = driver://user:pass@localhost/dbname
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let us leave a comment, which says that you need to update it accordingly.

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Done

Also, there was a bug in the online migrations function in alembic/env.py in structured sqlalchemy scaffold. Fixed, and added docs in example_app/index.mdx for database migration steps as well

COPY . .
RUN pip install --no-cache-dir --upgrade -r requirements.txt --target=/workspace/deps

FROM gcr.io/distroless/python3-debian11
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could you explain this?

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the --target flag tells pip to place the site packages at the specified path, we then copy this in the second stage and set PYTHONPATH accordingly

@sansyrox sansyrox mentioned this pull request Oct 28, 2024
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dave42w commented Oct 28, 2024

Hi,
Can you help me understand a couple of things in this scaffold structure?

Multiple SubRoutes.

For example, if we take the crimes example as one subrouter within a Gotham application.

If we look at the web based Gotham application we might have multiple subrouters eg crime, finance, planning, licenses, housing

where do these go in the scaffold directory structure? Are they:

\no-db\api\handlers\crime.py
\no-db\api\handlers\finance.py

Template and Static files

Where do the Jinja templates go?
Where do the static files go?

For both templates and static files I'm assuming that there will be some that are shared right across Gotham and some that are specific to crime or finance ...

Thanks

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Support for structured scaffolding in create command, retaining current templates
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