API reference

safir Package

Safir is the SQuaRE framework for Roundtable bots.

Variables

__version__	The version string of Safir (PEP 440 / SemVer compatible).
version_info	The decomposed version, split across “..”

safir.dependencies.http_client Module

HTTP client dependency for FastAPI.

Classes

HTTPClientDependency()

Provides an httpx.AsyncClient as a dependency.

Variables

DEFAULT_HTTP_TIMEOUT	Default timeout (in seconds) for outbound HTTP requests.
http_client_dependency	The dependency that will return the HTTP client.

Class Inheritance Diagram

safir.dependencies.logger Module

Logger dependency for FastAPI.

Provides a structlog logger as a FastAPI dependency. The logger will incorporate information from the request in its bound context.

Classes

LoggerDependency()

Provides a structlog logger configured with request information.

Variables

logger_dependency

The dependency that will return the logger for the current request.

Class Inheritance Diagram

safir.logging Module

Utilities for configuring structlog-based logging.

Functions

configure_logging(*, name[, profile, …])

Configure logging and structlog.

Variables

logger_name

Name of the configured global logger.

safir.metadata Module

Standardized metadata for Roundtable HTTP services.

Functions

get_metadata(*, package_name, application_name)	Retrieve metadata for the application.
get_project_url(meta, label)	Get a specific URL from a package’s project_urls metadata.

Classes

Metadata(*, name, version, description, …)

Metadata about a package.

Class Inheritance Diagram

safir.models Module

Standard models for FastAPI applications.

Examples

To reference the ErrorModel model when returning an error message, use code similar to this:

@router.get(
    "/route/{foo}",
    ...,
    responses={404: {"description": "Not found", "model": ErrorModel}},
)
async def route(foo: str) -> None:
    ...
    raise HTTPException(
        status_code=status.HTTP_404_NOT_FOUND,
        detail=[
            {"loc": ["path", "foo"], "msg": msg, "type": "invalid_foo"},
        ],
    )

Notes

FastAPI does not appear to export its error response model in a usable form, so define a copy of it so that we can reference it in API definitions to generate good documentation.

Classes

ErrorDetail(*, loc, msg, type)	The detail of the error message.
ErrorModel(*, detail)	A structured API error message.

Class Inheritance Diagram

safir.middleware.x_forwarded Module

Update the request based on X-Forwarded-For headers.

Classes

XForwardedMiddleware(app, *, proxies)

Middleware to update the request based on X-Forwarded-For.

Class Inheritance Diagram