Source code for airflow.models.kubernetes

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import uuid

from sqlalchemy import Column, Boolean, true as sqltrue, String

from airflow.models.base import Base
from airflow.utils.db import provide_session

[docs]class KubeResourceVersion(Base):
[docs] __tablename__ = "kube_resource_version"
[docs] one_row_id = Column(Boolean, server_default=sqltrue(), primary_key=True)
[docs] resource_version = Column(String(255))
@staticmethod @provide_session
[docs] def get_current_resource_version(session=None): (resource_version,) = session.query(KubeResourceVersion.resource_version).one() return resource_version
@staticmethod @provide_session
[docs] def checkpoint_resource_version(resource_version, session=None): if resource_version: session.query(KubeResourceVersion).update({ KubeResourceVersion.resource_version: resource_version }) session.commit()
@staticmethod @provide_session
[docs] def reset_resource_version(session=None): session.query(KubeResourceVersion).update({ KubeResourceVersion.resource_version: '0' }) session.commit() return '0'
[docs]class KubeWorkerIdentifier(Base):
[docs] __tablename__ = "kube_worker_uuid"
[docs] one_row_id = Column(Boolean, server_default=sqltrue(), primary_key=True)
[docs] worker_uuid = Column(String(255))
@staticmethod @provide_session
[docs] def get_or_create_current_kube_worker_uuid(session=None): (worker_uuid,) = session.query(KubeWorkerIdentifier.worker_uuid).one() if worker_uuid == '': worker_uuid = str(uuid.uuid4()) KubeWorkerIdentifier.checkpoint_kube_worker_uuid(worker_uuid, session) return worker_uuid
@staticmethod @provide_session
[docs] def checkpoint_kube_worker_uuid(worker_uuid, session=None): if worker_uuid: session.query(KubeWorkerIdentifier).update({ KubeWorkerIdentifier.worker_uuid: worker_uuid }) session.commit()

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