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42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
from typing import List, Optional
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from pydantic.v1 import BaseModel, Field, root_validator
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from langchain.tools import Tool
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from .agent import Agent
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class Task(BaseModel):
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"""
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Class that represent a task to be executed.
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"""
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description: str = Field(description="Description of the actual task.")
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agent: Optional[Agent] = Field(
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description="Agent responsible for the task.",
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default=None
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)
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tools: Optional[List[Tool]] = Field(
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description="Tools the agent are limited to use for this task.",
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default=[]
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)
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@root_validator(pre=False)
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def _set_tools(_cls, values):
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if (values.get('agent')) and not (values.get('tools')):
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values['tools'] = values.get('agent').tools
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return values
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def execute(self, context: str = None) -> str:
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"""
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Execute the task.
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Returns:
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output (str): Output of the task.
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"""
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if self.agent:
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return self.agent.execute_task(
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task = self.description,
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context = context,
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tools = self.tools
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)
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else:
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raise Exception(f"The task '{self.description}' has no agent assigned, therefore it can't be executed directly and should be executed in a Crew using a specific process that support that, either consensual or hierarchical.") |