92 lines
3.3 KiB
Python
92 lines
3.3 KiB
Python
# Copyright 2022 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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"""Pipeline as a component (aka graph component)."""
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import inspect
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from typing import Callable, Optional
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import uuid
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from kfp.compiler import pipeline_spec_builder as builder
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from kfp.dsl import base_component
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from kfp.dsl import pipeline_channel
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from kfp.dsl import pipeline_context
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from kfp.dsl import structures
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from kfp.pipeline_spec import pipeline_spec_pb2
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class GraphComponent(base_component.BaseComponent):
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"""A component defined via @dsl.pipeline decorator.
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Attribute:
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pipeline_func: The function that becomes the implementation of this component.
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"""
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def __init__(
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self,
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component_spec: structures.ComponentSpec,
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pipeline_func: Callable,
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display_name: Optional[str] = None,
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):
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super().__init__(component_spec=component_spec)
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self.pipeline_func = pipeline_func
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args_list = []
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signature = inspect.signature(pipeline_func)
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for arg_name in signature.parameters:
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input_spec = component_spec.inputs[arg_name]
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args_list.append(
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pipeline_channel.create_pipeline_channel(
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name=arg_name,
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channel_type=input_spec.type,
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is_artifact_list=input_spec.is_artifact_list,
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))
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with pipeline_context.Pipeline(
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self.component_spec.name) as dsl_pipeline:
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pipeline_outputs = pipeline_func(*args_list)
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if not dsl_pipeline.tasks:
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raise ValueError('Task is missing from pipeline.')
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# Making the pipeline group name unique to prevent name clashes with
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# templates
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pipeline_group = dsl_pipeline.groups[0]
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pipeline_group.name = uuid.uuid4().hex
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pipeline_spec, platform_spec = builder.create_pipeline_spec(
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pipeline=dsl_pipeline,
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component_spec=self.component_spec,
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pipeline_outputs=pipeline_outputs,
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)
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pipeline_root = getattr(pipeline_func, 'pipeline_root', None)
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if pipeline_root is not None:
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pipeline_spec.default_pipeline_root = pipeline_root
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if display_name is not None:
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pipeline_spec.pipeline_info.display_name = display_name
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if component_spec.description is not None:
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pipeline_spec.pipeline_info.description = component_spec.description
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self.component_spec.implementation.graph = pipeline_spec
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self.component_spec.platform_spec = platform_spec
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@property
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def pipeline_spec(self) -> pipeline_spec_pb2.PipelineSpec:
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"""Returns the pipeline spec of the component."""
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return self.component_spec.implementation.graph
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def execute(self, **kwargs):
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raise RuntimeError('Graph component has no local execution mode.')
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