Function _prepare_options

src/anthropic/lib/vertex/_client.py:420–452

(input_options: FinalRequestOptions, *, project_id: str | None, region: str)

def _prepare_options(input_options: FinalRequestOptions, *, project_id: str | None, region: str) -> FinalRequestOptions:
    options = model_copy(input_options, deep=True)

    if is_dict(options.json_data):
        options.json_data.setdefault("anthropic_version", DEFAULT_VERSION)

    if options.url in {"/v1/messages", "/v1/messages?beta=true"} and options.method == "post":
        if project_id is None:
            raise RuntimeError(
                "No project_id was given and it could not be resolved from credentials. The client should be instantiated with the `project_id` argument or the `ANTHROPIC_VERTEX_PROJECT_ID` environment variable should be set."
            )

        if not is_dict(options.json_data):
            raise RuntimeError("Expected json data to be a dictionary for post /v1/messages")

        model = options.json_data.pop("model")
        stream = options.json_data.get("stream", False)
        specifier = "streamRawPredict" if stream else "rawPredict"

        options.url = f"/projects/{project_id}/locations/{region}/publishers/anthropic/models/{model}:{specifier}"

    if options.url in {"/v1/messages/count_tokens", "/v1/messages/count_tokens?beta=true"} and options.method == "post":
        if project_id is None:
            raise RuntimeError(
                "No project_id was given and it could not be resolved from credentials. The client should be instantiated with the `project_id` argument or the `ANTHROPIC_VERTEX_PROJECT_ID` environment variable should be set."
            )

        options.url = f"/projects/{project_id}/locations/{region}/publishers/anthropic/models/count-tokens:rawPredict"

    if options.url.startswith("/v1/messages/batches"):
        raise AnthropicError("The Batch API is not supported in the Vertex client yet")

    return options