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from typing import TYPE_CHECKING, Any, Optional
from moto.core.common_models import BaseModel
from moto.core.utils import unix_time, utcnow
from moto.moto_api._internal import mock_random
from ..exceptions import SWFWorkflowExecutionClosedError
from .timeout import Timeout
if TYPE_CHECKING:
from .workflow_execution import WorkflowExecution
class DecisionTask(BaseModel):
def __init__(
self, workflow_execution: "WorkflowExecution", scheduled_event_id: int
):
self.workflow_execution = workflow_execution
self.workflow_type = workflow_execution.workflow_type
self.task_token = str(mock_random.uuid4())
self.scheduled_event_id = scheduled_event_id
self.previous_started_event_id: Optional[int] = None
self.started_event_id: Optional[int] = None
self.started_timestamp: Optional[float] = None
self.start_to_close_timeout = (
self.workflow_execution.task_start_to_close_timeout
)
self.state = "SCHEDULED"
# this is *not* necessarily coherent with workflow execution history,
# but that shouldn't be a problem for tests
self.scheduled_at = utcnow()
self.timeout_type: Optional[str] = None
@property
def started(self) -> bool:
return self.state == "STARTED"
def _check_workflow_execution_open(self) -> None:
if not self.workflow_execution.open:
raise SWFWorkflowExecutionClosedError()
def to_full_dict(self, reverse_order: bool = False) -> dict[str, Any]:
events = self.workflow_execution.events(reverse_order=reverse_order)
hsh: dict[str, Any] = {
"events": [evt.to_dict() for evt in events],
"taskToken": self.task_token,
"workflowExecution": self.workflow_execution.to_short_dict(),
"workflowType": self.workflow_type.to_short_dict(),
}
if self.previous_started_event_id is not None:
hsh["previousStartedEventId"] = self.previous_started_event_id
if self.started_event_id:
hsh["startedEventId"] = self.started_event_id
return hsh
def start(
self, started_event_id: int, previous_started_event_id: Optional[int] = None
) -> None:
self.state = "STARTED"
self.started_timestamp = unix_time()
self.started_event_id = started_event_id
self.previous_started_event_id = previous_started_event_id
def complete(self) -> None:
self._check_workflow_execution_open()
self.state = "COMPLETED"
def first_timeout(self) -> Optional[Timeout]:
if not self.started or not self.workflow_execution.open:
return None
# TODO: handle the "NONE" case
start_to_close_at = self.started_timestamp + int(self.start_to_close_timeout) # type: ignore
_timeout = Timeout(self, start_to_close_at, "START_TO_CLOSE")
if _timeout.reached:
return _timeout
return None
def process_timeouts(self) -> None:
_timeout = self.first_timeout()
if _timeout:
self.timeout(_timeout)
def timeout(self, _timeout: Timeout) -> None:
self._check_workflow_execution_open()
self.state = "TIMED_OUT"
self.timeout_type = _timeout.kind
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