46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
# Copyright 2023 The Kubeflow Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from google.protobuf import json_format
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from kfp.dsl import PipelineTask
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from kfp.kubernetes import common
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def add_node_selector(
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task: PipelineTask,
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label_key: str,
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label_value: str,
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) -> PipelineTask:
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"""Add a constraint to the task Pod's `nodeSelector
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<https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#nodeselector>`_.
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Each constraint is a key-value pair, corresponding to the PodSpec's `nodeSelector <https://kubernetes.io/docs/reference/kubernetes-api/workload-resources/pod-v1/#scheduling>`_ field.
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For the task's Pod to be eligible to run on a node, the node's labels must satisfy the constraint.
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Args:
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task: Pipeline task.
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label_key: Key of the nodeSelector label.
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label_value: Value of the nodeSelector label.
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Returns:
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Task object with an added nodeSelector constraint.
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"""
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msg = common.get_existing_kubernetes_config_as_message(task)
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msg.node_selector.labels.update({label_key: label_value})
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task.platform_config['kubernetes'] = json_format.MessageToDict(msg)
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return task
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