Skyvern/skyvern/forge/agent_functions.py

45 lines
1.9 KiB
Python

from playwright.async_api import Page
from skyvern.exceptions import StepTerminationError
from skyvern.forge import app
from skyvern.forge.async_operations import AsyncOperation
from skyvern.forge.sdk.models import Organization, Step, StepStatus
from skyvern.forge.sdk.schemas.tasks import Task, TaskStatus
class AgentFunction:
async def validate_step_execution(
self,
task: Task,
step: Step,
) -> None:
"""
Checks if the step can be executed.
:return: A tuple of whether the step can be executed and a list of reasons why it can't be executed.
"""
reasons = []
# can't execute if task status is not running
has_valid_task_status = task.status == TaskStatus.running
if not has_valid_task_status:
reasons.append(f"invalid_task_status:{task.status}")
# can't execute if the step is already running or completed
has_valid_step_status = step.status in [StepStatus.created, StepStatus.failed]
if not has_valid_step_status:
reasons.append(f"invalid_step_status:{step.status}")
# can't execute if the task has another step that is running
steps = await app.DATABASE.get_task_steps(task_id=task.task_id, organization_id=task.organization_id)
has_no_running_steps = not any(step.status == StepStatus.running for step in steps)
if not has_no_running_steps:
reasons.append(f"another_step_is_running_for_task:{task.task_id}")
can_execute = has_valid_task_status and has_valid_step_status and has_no_running_steps
if not can_execute:
raise StepTerminationError(step_id=step.step_id, reason="Cannot execute step. Reasons: {reasons}")
def generate_async_operations(
self,
organization: Organization,
task: Task,
page: Page,
) -> list[AsyncOperation]:
return []