def add(self, task: DAGNode) -> None:
"""Add a task to this TaskGroup.
:meta private:
"""
from airflow.models.abstractoperator import AbstractOperator
existing_tg = task.task_group
if isinstance(task, AbstractOperator
) and existing_tg is not None and existing_tg != self:
raise TaskAlreadyInTaskGroup(task.node_id, existing_tg.node_id,
self.node_id)
# Set the TG first, as setting it might change the return value of node_id!
task.task_group = weakref.proxy(self)
key = task.node_id
if key in self.children:
node_type = "Task" if hasattr(task, 'task_id') else "Task Group"
raise DuplicateTaskIdFound(
f"{node_type} id '{key}' has already been added to the DAG")
if isinstance(task, TaskGroup):
if self.dag:
if task.dag is not None and self.dag is not task.dag:
raise RuntimeError(
"Cannot mix TaskGroups from different DAGs: %s and %s",
self.dag, task.dag)
task.dag = self.dag
if task.children:
raise AirflowException("Cannot add a non-empty TaskGroup")
self.children[key] = task
def _remove(self, task: DAGNode) -> None:
key = task.node_id
if key not in self.children:
raise KeyError(f"Node id {key!r} not part of this task group")
self.used_group_ids.remove(key)
del self.children[key]
task.task_group = None
def add(self, task: DAGNode) -> None:
"""Add a task to this TaskGroup."""
key = task.node_id
if key in self.children:
node_type = "Task" if hasattr(task, 'task_id') else "Task Group"
raise DuplicateTaskIdFound(
f"{node_type} id '{key}' has already been added to the DAG")
if isinstance(task, TaskGroup):
if self.dag:
if task.dag is not None and self.dag is not task.dag:
raise RuntimeError(
"Cannot mix TaskGroups from different DAGs: %s and %s",
self.dag, task.dag)
task.dag = self.dag
if task.children:
raise AirflowException("Cannot add a non-empty TaskGroup")
self.children[key] = task
task.task_group = weakref.proxy(self)