Change log#

3.6.0 (unreleased)#

  • Add a safir.models.ErrorLocation enum holding valid values for the first element of the loc array in safir.models.ErrorModel. Due to limitations in Python typing, loc is not type-checked against this enum, but it may be useful to applications constructing FastAPI-compatible error messages.

3.5.0 (2023-01-12)#

  • Add new helper class safir.gcs.SignedURLService to generate signed URLs to Google Cloud Storage objects using workload identity. To use this class, depend on safir[gcs].

  • Add the safir.testing.gcs module, which can be used to mock the Google Cloud Storage API for testing. To use this module, depend on safir[gcs].

  • Add new helper class safir.pydantic.CamelCaseModel, which is identical to pydantic.BaseModel except with configuration added to accept camel-case keys using the safir.pydantic.to_camel_case alias generator and overrides of dict and json to export in camel-case by default.

3.4.0 (2022-11-29)#

  • safir.logging.configure_logging and safir.logging.configure_uvicorn_logging now accept Profile and LogLevel enums in addition to strings for the profile and log_level parameters. The new enums are preferred. Support for enums was added in preparation for changing the FastAPI template to use pydantic.BaseSettings for its Configuration class and validate the values of the profile and log_level configuration parameters.

  • Add new function safir.pydantic.normalize_datetime, which can be used as a Pydantic validator for datetime fields. It also allows seconds since epoch as input, and ensures that the resulting datetime field in the model is timezone-aware and in UTC.

  • Add new function safir.pydantic.to_camel_case, which can be used as a Pydantic alias generator when a model needs to accept attributes with camel-case names.

  • Add new function safir.pydantic.validate_exactly_one_of, which can be used as a model validator to ensure that exactly one of a list of fields was set to a value other than None.

  • In safir.testing.kubernetes.patch_kubernetes, correctly apply a spec to the mock of kubernetes_asyncio.client.ApiClient. Due to an ordering bug in previous versions, the spec was previously a mock object that didn’t apply any constraints.

3.3.0 (2022-09-15)#

  • Add new function safir.logging.configure_uvicorn_logging that routes Uvicorn logging through structlog for consistent formatting. It also adds context to Uvicorn logs in the format recognized by Google’s Cloud Logging.

  • Support the newer project metadata structure and URL naming used by pyproject.toml-only packages in safir.metadata.get_metadata.

3.2.0 (2022-05-13)#

  • New support for arq, the Redis-based asyncio distributed queue package. The safir.arq module provides an arq client and metadata/result data classes with a mock implementation for testing. The FastAPI dependency, safir.dependencies.arq.arq_dependency, provides a convenient way to use the arq client from HTTP handlers.

3.1.0 (2022-06-01)#

  • Add new FastAPI middleware CaseInsensitiveQueryMiddleware to aid in implementing the IVOA protocol requirement that the keys of query parameters be case-insensitive.

3.0.3 (2022-05-16)#

  • Correctly handle the possibility that request.client is None.

3.0.2 (2022-03-25)#

  • Fix handling of passwords containing special characters such as @ and / in safir.database.

3.0.1 (2022-02-24)#

  • safir.database retains the port in the database URL, if provided.

3.0.0 (2022-02-23)#

  • XForwardedMiddleware no longer sets ``forwarded_protoin the request state and instead directly updates the request scope so that subsequent handlers and middleware believe the request scheme is that given by anX-Forwarded-Protoheader. This fixes the scheme returned by other request methods and attributes such asurl_for` in cases where the service is behind an ingress that terminates TLS.

  • Add new FastAPI dependencies auth_dependency and auth_logger_dependency from the safir.dependencies.gafaelfawr module. auth_dependency returns the username of the user authenticated via Gafaelfawr (pulled from the X-Auth-Request-User header. auth_logger_dependency returns the same logger as logger_dependency but with the user parameter bound to the username from auth_dependency.

  • Add utility functions to initialize a database and create a sync or async session. The session creation functions optionally support a health check to ensure the database schema has been initialized.

  • Add new FastAPI dependency db_session_dependency that creates a task-local async SQLAlchemy session.

  • Add utility functions datetime_from_db and datetime_to_db to convert between timezone-naive UTC datetimes stored in a database and timezone-aware UTC datetimes used elsewhere in a program.

  • Add a run_with_async decorator that runs the decorated async function synchronously. This is primarily useful for decorating Click command functions (for a command-line interface) that need to make async calls.

2.4.2 (2022-01-24)#

  • Add a very basic and limited implementation of list_namespaced_pod to safir.testing.kubernetes.

2.4.1 (2022-01-14)#

  • In the Kubernetes mock API, change the expected body for patch_namespaced_custom_object_status to reflect the need to send a JSON patch for the entirety of the /status path in order to work around a kubernetes_asyncio bug.

2.4.0 (2022-01-13)#

  • Add an initialize_kubernetes helper function to load Kubernetes configuration. Add the safir.testing.kubernetes module, which can be used to mock the Kubernetes API for testing. To use the new Kubernetes support, depend on safir[kubernetes].

2.3.0 (2021-12-13)#

  • When logging in JSON format, use severity instead of level for the log level for compatibility with Google Log Explorer.

  • In the FastAPI logger_dependency, add log information about the incoming requst in a format compatible with Google Log Explorer.

2.2.0 (2021-11-09)#

  • Restore previous http_client_dependency behavior by enabling following redirects by default. This adjusts for the change of defaults in httpx 0.20.0.

2.1.1 (2021-10-29)#

  • Require structlog 21.2.0 and adjust logger configuration of exception handling for the expectations of that version.

2.1.0 (2021-08-09)#

  • Add safir.models.ErrorModel, which is a model of the error message format preferred by FastAPI. Using the model is not necessary but it’s helpful to reference it in API documentation to generate more complete information about the error messages.

  • Mark all FastAPI dependencies as async so that FastAPI doesn’t run them in an external thread pool.

2.0.1 (2021-06-24)#

  • Defer creation of httpx.AsyncClient until the first time it is requested. Allow re-creation after aclose(), which makes it easier to write test suites.

2.0.0 (2021-06-21)#

As of this release, Safir is a helper library for FastAPI applications instead of aiohttp applications. Much of the library has changed. Authors of software that uses Safir should read the documentation again as part of the upgrade to FastAPI.

Included in this release is:

  • A FastAPI dependency to provide a structlog logger as configured by the safir.logging package, replacing the aiohttp middleware.

  • A FastAPI dependency to provide a global httpx.AsyncClient, replacing the middleware that provided an aiohttp client.

  • Starlette (FastAPI) middleware to parse X-Forwarded-* headers and update request information accordingly.

  • safir.metadata.get_metadata now returns a Pydantic model.

As of this release, Safir only supports Python 3.8 or later.

1.0.0 (2021-06-18)#

Safir v1 will be the major release supporting aiohttp. Starting with Safir v2, Safir will become a support library for FastAPI applications.

This release has no significant difference from 0.2.0. The version bump is to indicate that the aiohttp support is stable.

0.2.0 (2021-06-10)#

  • configure_logging now supports an optional add_timestamp parameter (false by default) that adds a timestamp to each log message.

  • Update dependencies.

0.1.1 (2021-01-14)#

  • Fix duplicated log output when logging is configured multiple times.

  • Update dependencies.

0.1.0 (2020-02-26)#

  • The first release of Safir featuring:

    • safir.http for adding an aiohttp.ClientSession to your application.

    • safir.logging for configuring structlog loggers.

    • safir.metadata helps your gather and structure metadata about your application for publishing on metadata endpoints.

    • safir.middleware includes a logging middleware that adds a logger with bound context about the request to your Request object.

    • Documentation about these features and a tutorial for starting a new application with the roundtable_aiohttp_bot template.