ywpi 0.1.4

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Supported annotation variants

import typing
import ywpi

def fn(
    a1: int,
    a2: str,
    a3: float,

    # String as text
    a4: typing.Annotated[str, ywpi.Text],

    # File content
    a5: typing.Annotated[bytes, ywpi.File],

    # File reference
    a6: typing.Annotated[ywpi.Ref, ywpi.File],
):
    pass

Referenced JSON

{
    "output_str": {
        "type": "str",
        "value": ""
    },
    "output_int": {
        "type": "int",
        "value": 0
    },
    "output_url": {
        "type": "url",
        "value": "https://python.org/"
    },
    "output_ref": {
        "type": "ref",
        "value": {
            "drive_id": "",
            "preview_href": ""
        }
    }
}

Multiple level of serialization

1. Application - regular python dictionary with python objects
2. Hub - serialize dictionary in StartTaskRequest model
   • Referencify bytes values with attachments
3. gRPC - serialize StartTaskRequest to string via JSON string + attachments map

Serialization for model with bytes fields

Ywpi pass additional context to pydantic model_validate method. Context has next format:

{
    "attachments": {
        "attachment_key": b"binary content"
    }
}

class Model(pydantic.BaseModel):
    class File(pydantic.BaseModel):
        content: bytes 

        @pydantic.field_validator('content', mode='before')
        def validate(data, info: pydantic.ValidationInfo) -> bytes:
            print("Validate", data, "\n")
            if isinstance(data, dict):
                key = data["$attachment"]
                if key in info.context["attachments"]:
                    return info.context["attachments"][key]
                else:
                    raise ValueError(f'conten with key "{key}" does not present in the attachments')
            return data

    files: list['Model.File'] = []