Update frequenz-client-base requirement from <0.7,>=0.6.0 to >=0.6.0,<0.8

[dependabot]

Updates the requirements on frequenz-client-base to permit the latest version.

Release notes

Sourced from frequenz-client-base's releases.

v0.7.0

Frequenz Client Base Library Release Notes

Summary

This release improves the BaseApiClient interface and introduces HTTP2 keep-alive, among other changes.

Upgrading

• GrpcStreamBroadcaster now takes a AsyncIterable instead of a AsyncIterator as the stream_method. This is to match the type of streaming methods generated by grpc, so no conversion to an AsyncIterator is needed.

• GrpcStreamBroadcaster no longer tries to reconnect when a server closes a connection. This behaviour can be overridden by passing retry_on_exhausted_stream=True when constructing GrpcStreamBroadcaster instances.

• gRPC URLs don't have a default port anymore, unless a default is set via ChannelOptions. If you want to set a default port for URLs, please pass custom ChannelOptions as defaults to parse_grpc_uri or as channel_defaults to BaseApiClient.

• The ExponentialBackoff and LinearBackoff classes now require keyword arguments for their constructor. This change was made to make the classes easier to use and to avoid confusion with the order of the arguments.

• HTTP2 keep-alive is now enabled by default, with an interval of 60 seconds between pings, and a 20 second timeout for responses from the service. These values are configurable and may be updated based on specific requirements.

• The BaseApiClient class is not generic anymore, and doesn't take a function to create the stub. Instead, subclasses should create their own stub right after calling the parent constructor. This enables subclasses to cast the stub to the generated XxxAsyncStub class, which have proper async type hints. To convert you client:

  # Old
  from my_service_pb2_grpc import MyServiceStub
  class MyApiClient(BaseApiClient[MyServiceStub]):
      def __init__(self, server_url: str, *, ...) -> None:
          super().__init__(server_url, MyServiceStub, ...)
          ...
  New
  from typing import cast
  from my_service_pb2_grpc import MyServiceStub, MyServiceAsyncStub
  class MyApiClient(BaseApiClient):
  def init(self, server_url: str, *, ...) -> None:
  super().init(server_url, connect=connect)
  self._stub = cast(MyServiceAsyncStub, MyServiceStub(self.channel))
  ...
  @property
  def stub(self) -> MyServiceAsyncStub:
      if self._channel is None:
          raise ClientNotConnected(server_url=self.server_url, operation="stub")
      return self._stub

  After this, you should be able to remove a lot of casts or type: ignore from the code when calling the stub async methods.

New Features

• Added support for HTTP2 keep-alive.

... (truncated)

Commits

• 3d35fe7 Prepare for v0.7.0 (#93)
• c165486 Prepare for v0.7.0
• 5414a6d Remove generic type from BaseApiClient (#92)
• 091256b Add channel_defaults to the BaseApiClient example
• 035a794 Remove generic type from BaseApiClient
• 9864776 Support http2 keep-alive (#90)
• 7f45223 Apply suggestions from code review
• 2770f7a Update release notes
• e84c217 Support http2 keep-alive
• 689feaa Remove unused condition in tests
• Additional commits viewable in compare view

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[dependabot]

Looks like frequenz-client-base is up-to-date now, so this is no longer needed.