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import uuid
from abc import ABC
from typing import Any, Dict, List, Optional
from swarms.memory.schemas import Artifact, Status
from swarms.memory.schemas import Step as APIStep
from swarms.memory.schemas import Task as APITask
class Step(APIStep):
additional_properties: Optional[Dict[str, str]] = None
class Task(APITask):
steps: List[Step] = []
class NotFoundException(Exception):
"""
Exception raised when a resource is not found.
"""
def __init__(self, item_name: str, item_id: str):
self.item_name = item_name
self.item_id = item_id
super().__init__(f"{item_name} with {item_id} not found.")
class TaskDB(ABC):
async def create_task(
self,
input: Optional[str],
additional_input: Any = None,
artifacts: Optional[List[Artifact]] = None,
steps: Optional[List[Step]] = None,
) -> Task:
raise NotImplementedError
async def create_step(
self,
task_id: str,
name: Optional[str] = None,
input: Optional[str] = None,
is_last: bool = False,
additional_properties: Optional[Dict[str, str]] = None,
) -> Step:
raise NotImplementedError
async def create_artifact(
self,
task_id: str,
file_name: str,
relative_path: Optional[str] = None,
step_id: Optional[str] = None,
) -> Artifact:
raise NotImplementedError
async def get_task(self, task_id: str) -> Task:
raise NotImplementedError
async def get_step(self, task_id: str, step_id: str) -> Step:
raise NotImplementedError
async def get_artifact(self, task_id: str, artifact_id: str) -> Artifact:
raise NotImplementedError
async def list_tasks(self) -> List[Task]:
raise NotImplementedError
async def list_steps(
self, task_id: str, status: Optional[Status] = None
) -> List[Step]:
raise NotImplementedError
class InMemoryTaskDB(TaskDB):
_tasks: Dict[str, Task] = {}
async def create_task(
self,
input: Optional[str],
additional_input: Any = None,
artifacts: Optional[List[Artifact]] = None,
steps: Optional[List[Step]] = None,
) -> Task:
if not steps:
steps = []
if not artifacts:
artifacts = []
task_id = str(uuid.uuid4())
task = Task(
task_id=task_id,
input=input,
steps=steps,
artifacts=artifacts,
additional_input=additional_input,
)
self._tasks[task_id] = task
return task
async def create_step(
self,
task_id: str,
name: Optional[str] = None,
input: Optional[str] = None,
is_last=False,
additional_properties: Optional[Dict[str, Any]] = None,
) -> Step:
step_id = str(uuid.uuid4())
step = Step(
task_id=task_id,
step_id=step_id,
name=name,
input=input,
status=Status.created,
is_last=is_last,
additional_properties=additional_properties,
)
task = await self.get_task(task_id)
task.steps.append(step)
return step
async def get_task(self, task_id: str) -> Task:
task = self._tasks.get(task_id, None)
if not task:
raise NotFoundException("Task", task_id)
return task
async def get_step(self, task_id: str, step_id: str) -> Step:
task = await self.get_task(task_id)
step = next(filter(lambda s: s.task_id == task_id, task.steps), None)
if not step:
raise NotFoundException("Step", step_id)
return step
async def get_artifact(self, task_id: str, artifact_id: str) -> Artifact:
task = await self.get_task(task_id)
artifact = next(
filter(lambda a: a.artifact_id == artifact_id, task.artifacts), None
)
if not artifact:
raise NotFoundException("Artifact", artifact_id)
return artifact
async def create_artifact(
self,
task_id: str,
file_name: str,
relative_path: Optional[str] = None,
step_id: Optional[str] = None,
) -> Artifact:
artifact_id = str(uuid.uuid4())
artifact = Artifact(
artifact_id=artifact_id, file_name=file_name, relative_path=relative_path
)
task = await self.get_task(task_id)
task.artifacts.append(artifact)
if step_id:
step = await self.get_step(task_id, step_id)
step.artifacts.append(artifact)
return artifact
async def list_tasks(self) -> List[Task]:
return [task for task in self._tasks.values()]
async def list_steps(
self, task_id: str, status: Optional[Status] = None
) -> List[Step]:
task = await self.get_task(task_id)
steps = task.steps
if status:
steps = list(filter(lambda s: s.status == status, steps))
return steps |