airflow k8s_model 源码
airflow k8s_model 代码
文件路径：/airflow/kubernetes/k8s_model.py
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"""Classes for interacting with Kubernetes API."""
from __future__ import annotations
from abc import ABC, abstractmethod
from functools import reduce
from kubernetes.client import models as k8s
class K8SModel(ABC):
"""
These Airflow Kubernetes models are here for backwards compatibility
reasons only. Ideally clients should use the kubernetes api
and the process of
client input -> Airflow k8s models -> k8s models
can be avoided. All of these models implement the
`attach_to_pod` method so that they integrate with the kubernetes client.
"""
@abstractmethod
def attach_to_pod(self, pod: k8s.V1Pod) -> k8s.V1Pod:
"""
:param pod: A pod to attach this Kubernetes object to
:return: The pod with the object attached
"""
def append_to_pod(pod: k8s.V1Pod, k8s_objects: list[K8SModel] | None):
"""
:param pod: A pod to attach a list of Kubernetes objects to
:param k8s_objects: a potential None list of K8SModels
:return: pod with the objects attached if they exist
"""
if not k8s_objects:
return pod
return reduce(lambda p, o: o.attach_to_pod(p), k8s_objects, pod)
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