133 lines
5.8 KiB
Python
133 lines
5.8 KiB
Python
from typing import Any, Dict, Literal, Type
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from httpx import AsyncClient
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from langchain.tools import BaseTool
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from pydantic import BaseModel, Field
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from skyvern_langchain.schema import CreateTaskInput, GetTaskInput
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from skyvern_langchain.settings import settings
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from skyvern.client import AsyncSkyvern
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from skyvern.forge.sdk.schemas.observers import ObserverTaskRequest
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from skyvern.forge.sdk.schemas.tasks import CreateTaskResponse, TaskRequest, TaskResponse
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class SkyvernTaskBaseTool(BaseTool):
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api_key: str = Field(default=settings.api_key)
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base_url: str = Field(default=settings.base_url)
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engine: Literal["TaskV1", "TaskV2"] = Field(default=settings.engine)
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run_task_timeout_seconds: int = Field(default=settings.run_task_timeout_seconds)
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def get_client(self) -> AsyncSkyvern:
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httpx_client = AsyncClient(
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headers={
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"Content-Type": "application/json",
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"x-api-key": self.api_key,
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},
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)
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return AsyncSkyvern(base_url=self.base_url, httpx_client=httpx_client)
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def _run(self, *args: Any, **kwargs: Any) -> None:
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raise NotImplementedError("skyvern task tool does not support sync")
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class RunTask(SkyvernTaskBaseTool):
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name: str = "run-skyvern-client-task"
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description: str = """Use Skyvern client to run a task. This function won't return until the task is finished."""
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args_schema: Type[BaseModel] = CreateTaskInput
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async def _arun(self, user_prompt: str, url: str | None = None) -> TaskResponse | Dict[str, Any | None]:
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if self.engine == "TaskV1":
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return await self._arun_task_v1(user_prompt=user_prompt, url=url)
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else:
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return await self._arun_task_v2(user_prompt=user_prompt, url=url)
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async def _arun_task_v1(self, user_prompt: str, url: str | None = None) -> TaskResponse:
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task_generation = await self.get_client().agent.generate_task(
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prompt=user_prompt,
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)
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task_request = TaskRequest.model_validate(task_generation, from_attributes=True)
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if url is not None:
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task_request.url = url
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return await self.get_client().agent.run_task(
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timeout_seconds=self.run_task_timeout_seconds,
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url=task_request.url,
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title=task_request.title,
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navigation_goal=task_request.navigation_goal,
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data_extraction_goal=task_request.data_extraction_goal,
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navigation_payload=task_request.navigation_goal,
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error_code_mapping=task_request.error_code_mapping,
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extracted_information_schema=task_request.extracted_information_schema,
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complete_criterion=task_request.complete_criterion,
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terminate_criterion=task_request.terminate_criterion,
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)
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async def _arun_task_v2(self, user_prompt: str, url: str | None = None) -> TaskResponse:
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task_request = ObserverTaskRequest(url=url, user_prompt=user_prompt)
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return await self.get_client().agent.run_observer_task_v_2(
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timeout_seconds=self.run_task_timeout_seconds,
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user_prompt=task_request.user_prompt,
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url=task_request.url,
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browser_session_id=task_request.browser_session_id,
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)
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class DispatchTask(SkyvernTaskBaseTool):
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name: str = "dispatch-skyvern-client-task"
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description: str = """Use Skyvern client to dispatch a task. This function will return immediately and the task will be running in the background."""
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args_schema: Type[BaseModel] = CreateTaskInput
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async def _arun(self, user_prompt: str, url: str | None = None) -> CreateTaskResponse | Dict[str, Any | None]:
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if self.engine == "TaskV1":
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return await self._arun_task_v1(user_prompt=user_prompt, url=url)
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else:
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return await self._arun_task_v2(user_prompt=user_prompt, url=url)
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async def _arun_task_v1(self, user_prompt: str, url: str | None = None) -> CreateTaskResponse:
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task_generation = await self.get_client().agent.generate_task(
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prompt=user_prompt,
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)
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task_request = TaskRequest.model_validate(task_generation, from_attributes=True)
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if url is not None:
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task_request.url = url
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return await self.get_client().agent.create_task(
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url=task_request.url,
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title=task_request.title,
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navigation_goal=task_request.navigation_goal,
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data_extraction_goal=task_request.data_extraction_goal,
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navigation_payload=task_request.navigation_goal,
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error_code_mapping=task_request.error_code_mapping,
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extracted_information_schema=task_request.extracted_information_schema,
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complete_criterion=task_request.complete_criterion,
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terminate_criterion=task_request.terminate_criterion,
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)
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async def _arun_task_v2(self, user_prompt: str, url: str | None = None) -> Dict[str, Any | None]:
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task_request = ObserverTaskRequest(url=url, user_prompt=user_prompt)
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return await self.get_client().agent.observer_task_v_2(
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user_prompt=task_request.user_prompt,
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url=task_request.url,
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browser_session_id=task_request.browser_session_id,
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)
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class GetTask(SkyvernTaskBaseTool):
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name: str = "get-skyvern-client-task"
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description: str = """Use Skyvern client to get a task."""
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args_schema: Type[BaseModel] = GetTaskInput
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async def _arun(self, task_id: str) -> Dict[str, Any | None]:
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if self.engine == "TaskV1":
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return await self._arun_task_v1(task_id=task_id)
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else:
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return await self._arun_task_v2(task_id=task_id)
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async def _arun_task_v1(self, task_id: str) -> TaskResponse:
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return await self.get_client().agent.get_task(task_id=task_id)
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async def _arun_task_v2(self, task_id: str) -> Dict[str, Any | None]:
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return await self.get_client().agent.get_observer_task_v_2(task_id=task_id)
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