`airflow.models.renderedtifields`¶

Save Rendered Template Fields

Module Contents¶

Classes¶

RenderedTaskInstanceFields

Save Rendered Template Fields

class airflow.models.renderedtifields.RenderedTaskInstanceFields(ti, render_templates=True)[source]¶

Bases: airflow.models.base.Base

Save Rendered Template Fields

__tablename__ = rendered_task_instance_fields[source]¶

dag_id[source]¶

task_id[source]¶

run_id[source]¶

map_index[source]¶

rendered_fields[source]¶

k8s_pod_yaml[source]¶

__table_args__[source]¶

task_instance[source]¶

dag_run[source]¶

execution_date[source]¶

__repr__()[source]¶

classmethod get_templated_fields(ti, session=NEW_SESSION)[source]¶

Get templated field for a TaskInstance from the RenderedTaskInstanceFields table.

Parameters

ti (airflow.models.taskinstance.TaskInstance) – Task Instance
session (sqlalchemy.orm.Session) – SqlAlchemy Session

Returns

Rendered Templated TI field

Return type

Optional[dict]

classmethod get_k8s_pod_yaml(ti, session=NEW_SESSION)[source]¶

Get rendered Kubernetes Pod Yaml for a TaskInstance from the RenderedTaskInstanceFields table.

Parameters

ti (airflow.models.taskinstance.TaskInstance) – Task Instance
session (sqlalchemy.orm.Session) – SqlAlchemy Session

Returns

Kubernetes Pod Yaml

Return type

Optional[dict]

write(session=None)[source]¶

Write instance to database

Parameters: session (sqlalchemy.orm.Session) – SqlAlchemy Session

classmethod delete_old_records(task_id, dag_id, num_to_keep=conf.getint('core', 'max_num_rendered_ti_fields_per_task', fallback=0), session=None)[source]¶

Keep only Last X (num_to_keep) number of records for a task by deleting others.

In the case of data for a mapped task either all of the rows or none of the rows will be deleted, so we don’t end up with partial data for a set of mapped Task Instances left in the database.

Parameters

task_id (str) – Task ID
dag_id (str) – Dag ID
num_to_keep – Number of Records to keep
session (sqlalchemy.orm.Session) – SqlAlchemy Session

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