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Httpx Backend

HttpxBackend

Bases: OpenAIBackendMixin

Source code in mbodied/agents/backends/httpx_backend.py 
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class HttpxBackend(OpenAIBackendMixin):
    SERIALIZER = HttpxSerializer
    DEFAULT_SRC = "https://api.reka.ai/v1/chat"
    DEFAULT_MODEL = "reka-core-20240501"

    def __init__(
        self, api_key=None, endpoint: str | None = None, serializer: Serializer | None = None, **kwargs
    ) -> None:
        """Initializes the CompleteBackend. Defaults to using the API key from the environment and.

        Args:
            api_key (Optional[str]): The API key for the Complete service.
            endpoint (str): The base URL for the Complete API.
            serializer (Optional[Serializer]): The serializer to use for serializing messages.
        """
        self.base_url = endpoint or self.DEFAULT_SRC
        self.api_key = api_key or os.getenv("MBODI_API_KEY")
        self.headers = None
        if not self.api_key:
            self.headers = {"Content-Type": "application/json"}
        else:
            self.headers = {"X-Api-Key": self.api_key, "Content-Type": "application/json"}
        self.serialized = serializer or self.SERIALIZER
        self.kwargs = kwargs
        self.DEFAULT_MODEL = kwargs.get("model", self.DEFAULT_MODEL)

    @overload
    def predict(self, messages: List[Message], model: str | None = None, **kwargs) -> str: ...

    @overload
    def predict(
        self, message: Message, context: List[Message] | None = None, model: str | None = None, **kwargs
    ) -> str: ...

    def predict(
        self, message_or_messages, context: List[Message] | None = None, model: str | None = None, **kwargs
    ) -> str:
        # Determine if the input is a list of messages or a single message
        if isinstance(message_or_messages, list):
            messages = message_or_messages
        else:
            # If a single message is provided, append it to the context
            messages = (context or []) + [message_or_messages]

        model = model or self.DEFAULT_MODEL

        data = {
            "messages": [self.serialized(msg).serialize() for msg in messages],
            "model": model,
            "stream": False,
            **kwargs,
        }

        with httpx.Client(trust_env=True) as client:
            response = client.post(
                self.base_url, headers=self.headers, json=data, timeout=kwargs.get("timeout", 60), follow_redirects=True
            )

            # Process response
            if response.status_code == 200:
                response_data = response.json()
                return self.serialized.extract_response(response_data)

            response.raise_for_status()
            return response.text

    @overload
    def stream(self, messages: List[Message], model: str | None = None, **kwargs) -> Generator[str, None, None]: ...

    @overload
    def stream(
        self, message: Message, context: List[Message] | None = None, model: str | None = None, **kwargs
    ) -> Generator[str, None, None]: ...

    def stream(
        self, message_or_messages, context: List[Message] | None = None, model: str | None = None, **kwargs
    ) -> Generator[str, None, None]:
        if isinstance(message_or_messages, list):
            messages = message_or_messages
        else:
            # If a single message is provided, append it to the context
            messages = (context or []) + [message_or_messages]

        model = model or self.DEFAULT_MODEL

        yield from self._stream_completion(messages, model, **kwargs)

    @overload
    async def astream(
        self, messages: List[Message], model: str | None = None, **kwargs
    ) -> AsyncGenerator[str, None]: ...

    @overload
    async def astream(
        self, message: Message, context: List[Message] | None = None, model: str | None = None, **kwargs
    ) -> AsyncGenerator[str, None]: ...

    async def astream(
        self, message_or_messages, context: List[Message] | None = None, model: str | None = None, **kwargs
    ) -> AsyncGenerator[str, None]:
        if isinstance(message_or_messages, list):
            messages = message_or_messages
        else:
            # If a single message is provided, append it to the context
            messages = (context or []) + [message_or_messages]

        model = model or self.DEFAULT_MODEL

        async for chunk in self._astream_completion(messages, model, **kwargs):
            yield chunk

    def _stream_completion(
        self,
        messages: List[Message],
        model: str | None = None,
        **kwargs,
    ) -> Generator[str, None, None]:
        model = model or self.DEFAULT_MODEL
        data = {
            "messages": [self.serialized(msg).serialize() for msg in messages],
            "model": model,
            "stream": True,
            **kwargs,
        }
        data.update(kwargs)
        with (
            httpx.Client(follow_redirects=True) as client,
            client.stream(
                "post", self.base_url, headers=self.headers, json=data, timeout=kwargs.get("timeout", 60)
            ) as stream,
        ):
            for chunk in stream.iter_text():
                yield self.serialized.extract_stream(chunk)

    async def _acreate_completion(self, messages: List[Message], model: str | None = None, **kwargs) -> str:
        model = model or self.DEFAULT_MODEL
        data = {
            "messages": [self.serialized(msg).serialize() for msg in messages],
            "model": model,
            "stream": False,
            **kwargs,
        }
        data.update(kwargs)

        async with httpx.AsyncClient(timeout=-1) as client:
            response = await client.post(
                self.base_url, headers=self.headers, json=data, timeout=kwargs.get("timeout", 60)
            )
            if response.status_code == 200:
                response_data = response.json()
                return self.serialized.extract_response(response_data)
            return response.text

    async def _astream_completion(
        self, messages: List[Message], model: str | None = None, **kwargs
    ) -> AsyncGenerator[str, None]:
        model = model or self.DEFAULT_MODEL
        data = {
            "messages": [self.serialized(msg).serialize() for msg in messages],
            "model": model,
            "stream": True,
            **kwargs,
        }
        data.update(kwargs)
        async with httpx.AsyncClient(follow_redirects=True) as client:
            stream = client.stream("POST", self.base_url, headers=self.headers, json=data, timeout=60)
            async with stream as response:
                async for chunk in response.aiter_text():
                    yield self.serialized.extract_stream(chunk)

__init__(api_key=None, endpoint=None, serializer=None, **kwargs)

Initializes the CompleteBackend. Defaults to using the API key from the environment and.

Parameters:

Name Type Description Default
api_key Optional[str]

The API key for the Complete service.

 None
endpoint str

The base URL for the Complete API.

 None
serializer Optional[Serializer]

The serializer to use for serializing messages.

 None
Source code in mbodied/agents/backends/httpx_backend.py 
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def __init__(
    self, api_key=None, endpoint: str | None = None, serializer: Serializer | None = None, **kwargs
) -> None:
    """Initializes the CompleteBackend. Defaults to using the API key from the environment and.

    Args:
        api_key (Optional[str]): The API key for the Complete service.
        endpoint (str): The base URL for the Complete API.
        serializer (Optional[Serializer]): The serializer to use for serializing messages.
    """
    self.base_url = endpoint or self.DEFAULT_SRC
    self.api_key = api_key or os.getenv("MBODI_API_KEY")
    self.headers = None
    if not self.api_key:
        self.headers = {"Content-Type": "application/json"}
    else:
        self.headers = {"X-Api-Key": self.api_key, "Content-Type": "application/json"}
    self.serialized = serializer or self.SERIALIZER
    self.kwargs = kwargs
    self.DEFAULT_MODEL = kwargs.get("model", self.DEFAULT_MODEL)