"Messages without an explicit role not supported by PaLM API."
            )
    return genai.types.MessagePromptDict(
        context=context,
        examples=examples,
        messages=messages,
    )
def _create_retry_decorator() -> Callable[[Any], Any]:
    """Returns a tenacity retry decorator, preconfigured to handle PaLM exceptions"""
    import google.api_core.exceptions
    multiplier = 2
    min_seconds = 1
    max_seconds = 60
    max_retries = 10
    return retry(
        reraise=True,
        stop=stop_after_attempt(max_retries),
        wait=wait_exponential(multiplier=multiplier, min=min_seconds, max=max_seconds),
        retry=(
            retry_if_exception_type(google.api_core.exceptions.ResourceExhausted)
            | retry_if_exception_type(google.api_core.exceptions.ServiceUnavailable)
            | retry_if_exception_type(google.api_core.exceptions.GoogleAPIError)
        ),
        before_sleep=before_sleep_log(logger, logging.WARNING),
    )
[docs]def chat_with_retry(llm: ChatGooglePalm, **kwargs: Any) -> Any:
    """Use tenacity to retry the completion call."""
    retry_decorator = _create_retry_decorator()
    @retry_decorator
    def _chat_with_retry(**kwargs: Any) -> Any:
        return llm.client.chat(**kwargs)
    return _chat_with_retry(**kwargs)
[docs]async def achat_with_retry(llm: ChatGooglePalm, **kwargs: Any) -> Any:
    """Use tenacity to retry the async completion call."""
    retry_decorator = _create_retry_decorator()
    @retry_decorator
    async def _achat_with_retry(**kwargs: Any) -> Any: