66 lines
2.0 KiB
Python
66 lines
2.0 KiB
Python
# Copyright 2019 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 kfp.deprecated.dsl import graph_component
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import kfp.deprecated.dsl as dsl
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class FlipCoinOp(dsl.ContainerOp):
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"""Flip a coin and output heads or tails randomly."""
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def __init__(self):
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super(FlipCoinOp, self).__init__(
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name='Flip',
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image='python:alpine3.6',
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command=['sh', '-c'],
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arguments=[
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'python -c "import random; result = \'heads\' if random.randint(0,1) == 0 '
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'else \'tails\'; print(result)" | tee /tmp/output'
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],
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file_outputs={'output': '/tmp/output'})
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class PrintOp(dsl.ContainerOp):
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"""Print a message."""
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def __init__(self, msg):
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super(PrintOp, self).__init__(
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name='Print',
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image='alpine:3.6',
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command=['echo', msg],
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)
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@graph_component
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def flip_component(flip_result):
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print_flip = PrintOp(flip_result)
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flipA = FlipCoinOp().after(print_flip)
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with dsl.Condition(flipA.output == 'heads'):
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flip_component(flipA.output)
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@dsl.pipeline(
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name='pipeline flip coin', description='shows how to use graph_component.')
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def recursive():
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flipA = FlipCoinOp()
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flipB = FlipCoinOp()
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flip_loop = flip_component(flipA.output)
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flip_loop.after(flipB)
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PrintOp('cool, it is over. %s' % flipA.output).after(flip_loop)
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if __name__ == '__main__':
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import kfp.deprecated.compiler as compiler
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compiler.Compiler().compile(recursive, __file__ + '.tar.gz')
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