8000 allow additional kwargs for fastapi by lesnik512 · Pull Request #35 · modern-python/lite-bootstrap · GitHub
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allow additional kwargs for fastapi #35

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Merged
merged 1 commit into from
May 8, 2025
Merged

allow additional kwargs for fastapi #35

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14 changes: 10 additions & 4 deletions lite_bootstrap/bootstrappers/fastapi_bootstrapper.py
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Original file line number Diff line number Diff line change
Expand Up @@ -39,14 +39,23 @@ class FastAPIConfig(
CorsConfig, HealthChecksConfig, LoggingConfig, OpentelemetryConfig, PrometheusConfig, SentryConfig, SwaggerConfig
):
application: "fastapi.FastAPI" = dataclasses.field(default=None) # type: ignore[assignment]
application_kwargs: dict[str, typing.Any] = dataclasses.field(default_factory=dict)
opentelemetry_excluded_urls: list[str] = dataclasses.field(default_factory=list)
prometheus_instrumentator_params: dict[str, typing.Any] = dataclasses.field(default_factory=dict)
prometheus_instrument_params: dict[str, typing.Any] = dataclasses.field(default_factory=dict)
prometheus_expose_params: dict[str, typing.Any] = dataclasses.field(default_factory=dict)

def __post_init__(self) -> None:
if not self.application:
object.__setattr__(self, "application", fastapi.FastAPI(docs_url=self.swagger_path))
object.__setattr__(
self, "application", fastapi.FastAPI(docs_url=self.swagger_path, **self.application_kwargs)
)
elif self.application_kwargs:
warnings.warn("application_kwargs must be used without application", stacklevel=2)

self.application.title = self.service_name
self.application.debug = self.service_debug
self.application.version = self.service_version


@dataclasses.dataclass(kw_only=True, slots=True, frozen=True)
Expand Down Expand Up @@ -182,9 +191,6 @@ async def lifespan_manager(self, _: "fastapi.FastAPI") -> typing.AsyncIterator[d

def __init__(self, bootstrap_config: FastAPIConfig) -> None:
super().__init__(bootstrap_config)
self.bootstrap_config.application.title = bootstrap_config.service_name
self.bootstrap_config.application.debug = bootstrap_config.service_debug
self.bootstrap_config.application.version = bootstrap_config.service_version

old_lifespan_manager = self.bootstrap_config.application.router.lifespan_context
self.bootstrap_config.application.router.lifespan_context = _merge_lifespan_context(
Expand Down
5 changes: 5 additions & 0 deletions tests/test_fastapi_bootstrap.py
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Expand Up @@ -71,6 +71,11 @@ def test_fastapi_bootstrapper_docs_url_differ(fastapi_config: FastAPIConfig) ->
bootstrapper.bootstrap()


def test_fastapi_bootstrapper_apps_and_kwargs_warning(fastapi_config: FastAPIConfig) -> None:
with pytest.warns(UserWarning, match="application_kwargs must be used without application"):
dataclasses.replace(fastapi_config, application=fastapi.FastAPI(), application_kwargs={"title": "some title"})


@pytest.mark.parametrize(
"package_name",
[
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