class OnboardingAgent(ABC):
"""
Onboarding agents are a special extension of agents used
in tasks that have a separate onboarding step. These agents
are designed to work without being linked to an explicit
unit, and instead are tied to the task run and task name.
Blueprints that require OnboardingAgents should implement an
OnboardingAgentState (to process the special task), and their
TaskRunners should have a run_onboarding and cleanup_onboarding
method.
"""
DISPLAY_PREFIX = "onboarding_"
def __init__(self,
db: "MephistoDB",
db_id: str,
row: Optional[Mapping[str, Any]] = None):
self.db: "MephistoDB" = db
if row is None:
row = db.get_onboarding_agent(db_id)
assert row is not None, f"Given db_id {db_id} did not exist in given db"
self.db_id: str = row["onboarding_agent_id"]
self.db_status = row["status"]
self.worker_id = row["worker_id"]
self.task_type = row["task_type"]
self.pending_observations: List["Packet"] = []
self.pending_actions: List["Packet"] = []
self.has_action = threading.Event()
self.has_action.clear()
self.wants_action = threading.Event()
self.wants_action.clear()
self.has_updated_status = threading.Event()
self.task_run_id = row["task_run_id"]
self.task_id = row["task_id"]
self.did_submit = threading.Event()
# Deferred loading of related entities
self._worker: Optional["Worker"] = None
self._task_run: Optional["TaskRun"] = None
self._task: Optional["Task"] = None
# Follow-up initialization
self.state = AgentState(self) # type: ignore
def get_agent_id(self) -> str:
"""Return an id to use for onboarding agent requests"""
return f"{self.DISPLAY_PREFIX}{self.db_id}"
@classmethod
def is_onboarding_id(cls, agent_id: str) -> bool:
"""return if the given id is for an onboarding agent"""
return agent_id.startswith(cls.DISPLAY_PREFIX)
@classmethod
def get_db_id_from_agent_id(cls, agent_id: str) -> str:
"""Extract the db_id for an onboarding_agent"""
assert agent_id.startswith(
cls.DISPLAY_PREFIX
), f"Provided id {agent_id} is not an onboarding_id"
return agent_id[len(cls.DISPLAY_PREFIX):]
def get_worker(self) -> Worker:
"""
Return the worker that is using this agent for a task
"""
if self._worker is None:
self._worker = Worker(self.db, self.worker_id)
return self._worker
def get_task_run(self) -> "TaskRun":
"""Return the TaskRun this agent is working within"""
if self._task_run is None:
from mephisto.data_model.task_run import TaskRun
self._task_run = TaskRun(self.db, self.task_run_id)
return self._task_run
def get_task(self) -> "Task":
"""Return the Task this agent is working within"""
if self._task is None:
if self._task_run is not None:
self._task = self._task_run.get_task()
else:
from mephisto.data_model.task import Task
self._task = Task(self.db, self.task_id)
return self._task
def get_data_dir(self) -> str:
"""
Return the directory to be storing any agent state for
this agent into
"""
task_run_dir = self.get_task_run().get_run_dir()
return os.path.join(task_run_dir, "onboarding", self.get_agent_id())
def update_status(self, new_status: str) -> None:
"""Update the database status of this agent, and
possibly send a message to the frontend agent informing
them of this update"""
if self.db_status == new_status:
return # Noop, this is already the case
if self.db_status in AgentState.complete():
print(f"Updating a final status, was {self.db_status} "
f"and want to set to {new_status}")
self.db.update_onboarding_agent(self.db_id, status=new_status)
self.db_status = new_status
self.has_updated_status.set()
if new_status in [
AgentState.STATUS_RETURNED, AgentState.STATUS_DISCONNECT
]:
# Disconnect statuses should free any pending acts
self.has_action.set()
self.did_submit.set()
def observe(self, packet: "Packet") -> None:
"""
Pass the observed information to the AgentState, then
queue the information to be pushed to the user
"""
sending_packet = packet.copy()
sending_packet.receiver_id = self.get_agent_id()
self.state.update_data(sending_packet)
self.pending_observations.append(sending_packet)
def act(self, timeout: Optional[int] = None) -> Optional["Packet"]:
"""
Request information from the Agent's frontend. If non-blocking,
(timeout is None) should return None if no actions are ready
to be returned.
"""
if len(self.pending_actions) == 0:
self.wants_action.set()
if timeout is None or timeout == 0:
return None
self.has_action.wait(timeout)
if len(self.pending_actions) == 0:
# various disconnect cases
status = self.get_status()
if status == AgentState.STATUS_DISCONNECT:
raise AgentDisconnectedError(self.db_id)
elif status == AgentState.STATUS_RETURNED:
raise AgentReturnedError(self.db_id)
self.update_status(AgentState.STATUS_TIMEOUT)
raise AgentTimeoutError(timeout, self.db_id)
assert len(
self.pending_actions) > 0, "has_action released without an action!"
act = self.pending_actions.pop(0)
if "MEPHISTO_is_submit" in act.data and act.data["MEPHISTO_is_submit"]:
self.did_submit.set()
if len(self.pending_actions) == 0:
self.has_action.clear()
self.state.update_data(act)
return act
def get_status(self) -> str:
"""Get the status of this agent in their work on their unit"""
if self.db_status not in AgentState.complete():
row = self.db.get_onboarding_agent(self.db_id)
if row["status"] != self.db_status:
if row["status"] in [
AgentState.STATUS_RETURNED,
AgentState.STATUS_DISCONNECT,
]:
# Disconnect statuses should free any pending acts
self.has_action.set()
self.has_updated_status.set()
self.db_status = row["status"]
return self.db_status
def mark_done(self) -> None:
"""Mark this agent as done by setting the status to a terminal onboarding state"""
# TODO the logic for when onboarding gets marked as waiting or approved/rejected
# should likely be cleaned up to remove these conditionals.
if self.get_status not in [
AgentState.STATUS_APPROVED,
AgentState.STATUS_REJECTED,
]:
self.update_status(AgentState.STATUS_WAITING)
@staticmethod
def new(db: "MephistoDB", worker: Worker,
task_run: "TaskRun") -> "OnboardingAgent":
"""
Create an OnboardingAgent for a worker to use as part of a task run
"""
db_id = db.new_onboarding_agent(worker.db_id, task_run.task_id,
task_run.db_id, task_run.task_type)
return OnboardingAgent(db, db_id)
class OnboardingAgent(MephistoDataModelComponentMixin,
metaclass=MephistoDBBackedABCMeta):
"""
Onboarding agents are a special extension of agents used
in tasks that have a separate onboarding step. These agents
are designed to work without being linked to an explicit
unit, and instead are tied to the task run and task name.
Blueprints that require OnboardingAgents should implement an
OnboardingAgentState (to process the special task), and their
TaskRunners should have a run_onboarding and cleanup_onboarding
method.
"""
DISPLAY_PREFIX = "onboarding_"
def __init__(
self,
db: "MephistoDB",
db_id: str,
row: Optional[Mapping[str, Any]] = None,
_used_new_call: bool = False,
):
if not _used_new_call:
raise AssertionError(
"Direct OnboardingAgent and data model access via OnboardingAgent(db, id) is "
"now deprecated in favor of calling OnboardingAgent.get(db, id). "
)
self.db: "MephistoDB" = db
if row is None:
row = db.get_onboarding_agent(db_id)
assert row is not None, f"Given db_id {db_id} did not exist in given db"
self.db_id: str = row["onboarding_agent_id"]
self.db_status: str = row["status"]
self.worker_id: str = row["worker_id"]
self.task_type: str = row["task_type"]
self.pending_actions: "Queue[Dict[str, Any]]" = Queue()
self.has_live_update = threading.Event()
self.has_live_update.clear()
self.task_run_id: str = row["task_run_id"]
self.task_id: str = row["task_id"]
self.did_submit = threading.Event()
self.is_shutdown = False
# Deferred loading of related entities
self._worker: Optional["Worker"] = None
self._task_run: Optional["TaskRun"] = None
self._task: Optional["Task"] = None
# Related entity set by a live run
self._associated_live_run: Optional["LiveTaskRun"] = None
# Follow-up initialization
self.state = AgentState(self) # type: ignore
def get_agent_id(self) -> str:
"""Return an id to use for onboarding agent requests"""
return f"{self.DISPLAY_PREFIX}{self.db_id}"
def set_live_run(self, live_run: "LiveTaskRun") -> None:
"""Set an associated live run for this agent"""
self._associated_live_run = live_run
def get_live_run(self) -> "LiveTaskRun":
"""Return the associated live run for this agent. Throw if not set"""
if self._associated_live_run is None:
raise AssertionError(
"Should not be getting the live run, not set for given agent")
return self._associated_live_run
@classmethod
def is_onboarding_id(cls, agent_id: str) -> bool:
"""return if the given id is for an onboarding agent"""
return agent_id.startswith(cls.DISPLAY_PREFIX)
@classmethod
def get_db_id_from_agent_id(cls, agent_id: str) -> str:
"""Extract the db_id for an onboarding_agent"""
assert agent_id.startswith(
cls.DISPLAY_PREFIX
), f"Provided id {agent_id} is not an onboarding_id"
return agent_id[len(cls.DISPLAY_PREFIX):]
def get_worker(self) -> Worker:
"""
Return the worker that is using this agent for a task
"""
if self._worker is None:
self._worker = Worker.get(self.db, self.worker_id)
return self._worker
def get_task_run(self) -> "TaskRun":
"""Return the TaskRun this agent is working within"""
if self._task_run is None:
from mephisto.data_model.task_run import TaskRun
self._task_run = TaskRun.get(self.db, self.task_run_id)
return self._task_run
def get_task(self) -> "Task":
"""Return the Task this agent is working within"""
if self._task is None:
if self._task_run is not None:
self._task = self._task_run.get_task()
else:
from mephisto.data_model.task import Task
self._task = Task.get(self.db, self.task_id)
return self._task
def get_data_dir(self) -> str:
"""
Return the directory to be storing any agent state for
this agent into
"""
task_run_dir = self.get_task_run().get_run_dir()
return os.path.join(task_run_dir, "onboarding", self.get_agent_id())
def update_status(self, new_status: str) -> None:
"""Update the database status of this agent, and
possibly send a message to the frontend agent informing
them of this update"""
if self.db_status == new_status:
return # Noop, this is already the case
logger.debug(f"Updating {self} to {new_status}")
if self.db_status in AgentState.complete():
logger.info(f"Updating {self} from final status to {new_status}")
old_status = self.db_status
self.db.update_onboarding_agent(self.db_id, status=new_status)
self.db_status = new_status
if self._associated_live_run is not None:
if new_status not in [
AgentState.STATUS_APPROVED,
AgentState.STATUS_REJECTED,
]:
live_run = self.get_live_run()
live_run.loop_wrap.execute_coro(
live_run.worker_pool.push_status_update(self))
if new_status in [
AgentState.STATUS_RETURNED, AgentState.STATUS_DISCONNECT
]:
# Disconnect statuses should free any pending acts
self.has_live_update.set()
self.did_submit.set()
# Metrics changes
ACTIVE_AGENT_STATUSES.labels(status=old_status,
agent_type="onboarding").dec()
ACTIVE_AGENT_STATUSES.labels(status=new_status,
agent_type="onboarding").inc()
if (old_status not in AgentState.complete()
and new_status in AgentState.complete()):
ACTIVE_WORKERS.labels(worker_id=self.worker_id,
agent_type="onboarding").dec()
def observe(self, live_update: "Dict[str, Any]") -> None:
"""
Pass the observed information to the AgentState, then
queue the information to be pushed to the user
"""
if live_update.get("update_id") is None:
live_update["update_id"] = str(uuid4())
self.state.update_data(live_update)
if self._associated_live_run is not None:
live_run = self.get_live_run()
live_run.client_io.send_live_update(self.get_agent_id(),
live_update)
def get_live_update(self,
timeout: Optional[int] = None
) -> Optional[Dict[str, Any]]:
"""
Request information from the Agent's frontend. If non-blocking,
(timeout is None) should return None if no actions are ready
to be returned.
"""
if self.pending_actions.empty():
if timeout is None or timeout == 0:
return None
self.has_live_update.wait(timeout)
if self.pending_actions.empty():
# various disconnect cases
if self.is_shutdown:
raise AgentShutdownError(self.db_id)
status = self.get_status()
if status == AgentState.STATUS_DISCONNECT:
raise AgentDisconnectedError(self.db_id)
elif status == AgentState.STATUS_RETURNED:
raise AgentReturnedError(self.db_id)
self.update_status(AgentState.STATUS_TIMEOUT)
raise AgentTimeoutError(timeout, self.db_id)
assert (not self.pending_actions.empty()
), "has_live_update released without an action!"
act = self.pending_actions.get()
if self.pending_actions.empty():
self.has_live_update.clear()
self.state.update_data(act)
return act
def act(self, timeout: Optional[int] = None) -> Optional[Dict[str, Any]]:
"""
Request information from the Agent's frontend. If non-blocking,
(timeout is None) should return None if no actions are ready
to be returned.
"""
warn_once(
"As of Mephisto 1.0 Agent.act is being deprecated in favor of Agent.get_live_update. "
"This functionality will no longer work in 1.1")
return self.get_live_update(timeout)
def await_submit(self, timeout: Optional[int] = None) -> bool:
"""Blocking wait for this agent to submit their task"""
if timeout is not None:
self.did_submit.wait(timeout=timeout)
return self.did_submit.is_set()
def handle_submit(self, submit_data: Dict[str, Any]) -> None:
"""Handle final submission for an onboarding agent, with the given data"""
self.did_submit.set()
self.state.update_submit(submit_data)
def get_status(self) -> str:
"""Get the status of this agent in their work on their unit"""
if self.db_status not in AgentState.complete():
row = self.db.get_onboarding_agent(self.db_id)
if row["status"] != self.db_status:
if row["status"] in [
AgentState.STATUS_RETURNED,
AgentState.STATUS_DISCONNECT,
]:
# Disconnect statuses should free any pending acts
self.has_live_update.set()
if row["status"] not in [
AgentState.STATUS_APPROVED,
AgentState.STATUS_REJECTED,
]:
if self._associated_live_run is not None:
live_run = self.get_live_run()
live_run.loop_wrap.execute_coro(
live_run.worker_pool.push_status_update(self))
self.db_status = row["status"]
return self.db_status
def shutdown(self) -> None:
"""
Force the given agent to end any polling threads and throw an AgentShutdownError
from any acts called on it, ensuring tasks using this agent can be cleaned up.
"""
logger.debug(f"{self} is shutting down")
self.has_live_update.set()
self.is_shutdown = True
@staticmethod
def new(db: "MephistoDB", worker: Worker,
task_run: "TaskRun") -> "OnboardingAgent":
"""
Create an OnboardingAgent for a worker to use as part of a task run
"""
db_id = db.new_onboarding_agent(worker.db_id, task_run.task_id,
task_run.db_id, task_run.task_type)
a = OnboardingAgent.get(db, db_id)
ACTIVE_AGENT_STATUSES.labels(status=AgentState.STATUS_NONE,
agent_type="onboarding").inc()
ACTIVE_WORKERS.labels(worker_id=worker.db_id,
agent_type="onboarding").inc()
logger.debug(f"Registered new {a} for worker {worker}.")
return a
def __repr__(self) -> str:
return f"{self.__class__.__name__}({self.db_id})"
class Agent(ABC):
"""
This class encompasses a worker as they are working on an individual assignment.
It maintains details for the current task at hand such as start and end time,
connection status, etc.
"""
def __init__(self,
db: "MephistoDB",
db_id: str,
row: Optional[Mapping[str, Any]] = None):
self.db: "MephistoDB" = db
if row is None:
row = db.get_agent(db_id)
assert row is not None, f"Given db_id {db_id} did not exist in given db"
self.db_id: str = row["agent_id"]
self.db_status = row["status"]
self.worker_id = row["worker_id"]
self.unit_id = row["unit_id"]
self.task_type = row["task_type"]
self.provider_type = row["provider_type"]
self.pending_observations: List["Packet"] = []
self.pending_actions: List["Packet"] = []
self.has_action = threading.Event()
self.has_action.clear()
self.wants_action = threading.Event()
self.wants_action.clear()
self.has_updated_status = threading.Event()
self.assignment_id = row["assignment_id"]
self.task_run_id = row["task_run_id"]
self.task_id = row["task_id"]
self.did_submit = threading.Event()
# Deferred loading of related entities
self._worker: Optional["Worker"] = None
self._unit: Optional["Unit"] = None
self._assignment: Optional["Assignment"] = None
self._task_run: Optional["TaskRun"] = None
self._task: Optional["Task"] = None
# Follow-up initialization
self.state = AgentState(self) # type: ignore
def __new__(cls,
db: "MephistoDB",
db_id: str,
row: Optional[Mapping[str, Any]] = None) -> "Agent":
"""
The new method is overridden to be able to automatically generate
the expected Agent class without needing to specifically find it
for a given db_id. As such it is impossible to create a base Agent
as you will instead be returned the correct Agent class according to
the crowdprovider associated with this Agent.
"""
from mephisto.operations.registry import get_crowd_provider_from_type
if cls == Agent:
# We are trying to construct a Agent, find what type to use and
# create that instead
if row is None:
row = db.get_agent(db_id)
assert row is not None, f"Given db_id {db_id} did not exist in given db"
correct_class = get_crowd_provider_from_type(
row["provider_type"]).AgentClass
return super().__new__(correct_class)
else:
# We are constructing another instance directly
return super().__new__(cls)
def get_agent_id(self) -> str:
"""Return this agent's id"""
return self.db_id
def get_worker(self) -> Worker:
"""
Return the worker that is using this agent for a task
"""
if self._worker is None:
self._worker = Worker(self.db, self.worker_id)
return self._worker
def get_unit(self) -> "Unit":
"""
Return the Unit that this agent is working on.
"""
if self._unit is None:
from mephisto.data_model.unit import Unit
self._unit = Unit(self.db, self.unit_id)
return self._unit
def get_assignment(self) -> "Assignment":
"""Return the assignment this agent is working on"""
if self._assignment is None:
if self._unit is not None:
self._assignment = self._unit.get_assignment()
else:
from mephisto.data_model.assignment import Assignment
self._assignment = Assignment(self.db, self.assignment_id)
return self._assignment
def get_task_run(self) -> "TaskRun":
"""Return the TaskRun this agent is working within"""
if self._task_run is None:
if self._unit is not None:
self._task_run = self._unit.get_task_run()
elif self._assignment is not None:
self._task_run = self._assignment.get_task_run()
else:
from mephisto.data_model.task_run import TaskRun
self._task_run = TaskRun(self.db, self.task_run_id)
return self._task_run
def get_task(self) -> "Task":
"""Return the Task this agent is working within"""
if self._task is None:
if self._unit is not None:
self._task = self._unit.get_task()
elif self._assignment is not None:
self._task = self._assignment.get_task()
elif self._task_run is not None:
self._task = self._task_run.get_task()
else:
from mephisto.data_model.task import Task
self._task = Task(self.db, self.task_id)
return self._task
def get_data_dir(self) -> str:
"""
Return the directory to be storing any agent state for
this agent into
"""
assignment_dir = self.get_assignment().get_data_dir()
return os.path.join(assignment_dir, self.db_id)
def update_status(self, new_status: str) -> None:
"""Update the database status of this agent, and
possibly send a message to the frontend agent informing
them of this update"""
if self.db_status == new_status:
return # Noop, this is already the case
if self.db_status in AgentState.complete():
print(f"Updating a final status, was {self.db_status} "
f"and want to set to {new_status}")
self.db.update_agent(self.db_id, status=new_status)
self.db_status = new_status
self.has_updated_status.set()
if new_status in [
AgentState.STATUS_RETURNED, AgentState.STATUS_DISCONNECT
]:
# Disconnect statuses should free any pending acts
self.has_action.set()
self.did_submit.set()
@staticmethod
def _register_agent(db: "MephistoDB", worker: Worker, unit: "Unit",
provider_type: str) -> "Agent":
"""
Create this agent in the mephisto db with the correct setup
"""
db_id = db.new_agent(
worker.db_id,
unit.db_id,
unit.task_id,
unit.task_run_id,
unit.assignment_id,
unit.task_type,
provider_type,
)
a = Agent(db, db_id)
a.update_status(AgentState.STATUS_ACCEPTED)
return a
# Specialized child cases may need to implement the following
@classmethod
def new_from_provider_data(
cls,
db: "MephistoDB",
worker: Worker,
unit: "Unit",
provider_data: Dict[str, Any],
) -> "Agent":
"""
Wrapper around the new method that allows registering additional
bookkeeping information from a crowd provider for this agent
"""
agent = cls.new(db, worker, unit)
unit.worker_id = worker.db_id
agent._unit = unit
return agent
def observe(self, packet: "Packet") -> None:
"""
Pass the observed information to the AgentState, then
queue the information to be pushed to the user
"""
if packet.data.get("message_id") is None:
packet.data["message_id"] = str(uuid4())
sending_packet = packet.copy()
sending_packet.receiver_id = self.db_id
self.state.update_data(sending_packet)
self.pending_observations.append(sending_packet)
def act(self, timeout: Optional[int] = None) -> Optional["Packet"]:
"""
Request information from the Agent's frontend. If non-blocking,
(timeout is None) should return None if no actions are ready
to be returned.
"""
if len(self.pending_actions) == 0:
self.wants_action.set()
if timeout is None or timeout == 0:
return None
self.has_action.wait(timeout)
if len(self.pending_actions) == 0:
# various disconnect cases
status = self.get_status()
if status == AgentState.STATUS_DISCONNECT:
raise AgentDisconnectedError(self.db_id)
elif status == AgentState.STATUS_RETURNED:
raise AgentReturnedError(self.db_id)
self.update_status(AgentState.STATUS_TIMEOUT)
raise AgentTimeoutError(timeout, self.db_id)
assert len(
self.pending_actions) > 0, "has_action released without an action!"
act = self.pending_actions.pop(0)
if "MEPHISTO_is_submit" in act.data and act.data["MEPHISTO_is_submit"]:
self.did_submit.set()
if len(self.pending_actions) == 0:
self.has_action.clear()
self.state.update_data(act)
return act
def get_status(self) -> str:
"""Get the status of this agent in their work on their unit"""
if self.db_status not in AgentState.complete():
row = self.db.get_agent(self.db_id)
if row["status"] != self.db_status:
if row["status"] in [
AgentState.STATUS_RETURNED,
AgentState.STATUS_DISCONNECT,
]:
# Disconnect statuses should free any pending acts
self.has_action.set()
self.has_updated_status.set()
self.db_status = row["status"]
return self.db_status
# Children classes should implement the following methods
def approve_work(self) -> None:
"""Approve the work done on this agent's specific Unit"""
raise NotImplementedError()
def soft_reject_work(self) -> None:
"""
Pay a worker for attempted work, but mark it as below the
quality bar for this assignment
"""
# TODO(OWN) extend this method to assign a soft block
# qualification automatically if a threshold of
# soft rejects as a proportion of total accepts
# is exceeded
self.approve_work()
self.update_status(AgentState.STATUS_SOFT_REJECTED)
def reject_work(self, reason) -> None:
"""Reject the work done on this agent's specific Unit"""
raise NotImplementedError()
def mark_done(self) -> None:
"""
Take any required step with the crowd_provider to ensure that
the worker can submit their work and be marked as complete via
a call to get_status
"""
raise NotImplementedError()
@staticmethod
def new(db: "MephistoDB", worker: Worker, unit: "Unit") -> "Agent":
"""
Create an agent for this worker to be used for work on the given Unit.
Implementation should return the result of _register_agent when sure the agent
can be successfully created to have it put into the db.
"""
raise NotImplementedError()