simple_module_feature_flags

Feature flags for simple_module apps. Global flags with per-tenant overrides, a tiny consumer API, and no external service to run.

Install

pip install simple_module_feature_flags

What it provides

  • Flags are declared via the framework register_feature_flags hook (FeatureFlagDefinition(name, default_enabled=...)); the module persists only overrides in the feature_flags_override SQLModel table (scoped by scope / scope_id).
  • FeatureFlagRegistry.is_enabled("flag.name", tenant_id=...) consumer API (resolution order: tenant override > system override > declared default).
  • Admin UI at /feature_flags — toggle flags, add per-scope overrides.
  • The registry is an in-memory cache hydrated from the DB so checking a flag on every request is cheap.

Usage

Declare a flag in your module:

from simple_module_core.feature_flags import FeatureFlagDefinition, FeatureFlagRegistry


class OrdersModule(ModuleBase):
    def register_feature_flags(self, registry: FeatureFlagRegistry) -> None:
        registry.add(FeatureFlagDefinition(name="orders.new_pricing_engine", default_enabled=False))

Gate a route using the registry dependency:

from fastapi import APIRouter, HTTPException

from feature_flags.deps import FeatureFlagRegistryDep  # type: ignore[import-not-found]

router = APIRouter()


@router.get("/new-feature")
async def new_feature(flags: FeatureFlagRegistryDep):
    if not flags.is_enabled("orders.new_pricing_engine"):
        raise HTTPException(404)
    return {"rolled_out": True}

Overrides (system or per-tenant) are managed through the admin UI at /feature_flags.

Depends on

  • simple_module_core, simple_module_db, simple_module_hosting

License

MIT — see LICENSE.

Project links

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Credits

Author: Anto Subash

GitHub Statistics

Data verified by PyPI on Sep 4, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
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Requires

Python >=3.12

Tags

feature-flags multi-tenant simple-module toggles

Classifiers

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