103 lines
3.2 KiB
Python
103 lines
3.2 KiB
Python
# Copyright 2021 kubeflow.org
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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 import dsl, components
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from kfp_tekton.tekton import CEL_ConditionOp
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RANDOM_NUM_STR = """
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name: generate-random-number
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description: Generate a random number between low and high.
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inputs:
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- {name: low, type: Integer}
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- {name: high, type: Integer}
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outputs:
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- {name: output, type: Integer}
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implementation:
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container:
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image: python:alpine3.6
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command:
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- sh
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- -c
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- |
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python -c "import random; print(random.randint($0, $1))" | tee $2
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- {inputValue: low}
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- {inputValue: high}
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- {outputPath: output}
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"""
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random_num_op = components.load_component_from_text(RANDOM_NUM_STR)
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FLIP_COIN_STR = """
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name: flip-coin
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description: Flip a coin and output heads or tails randomly
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outputs:
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- {name: output, type: Integer}
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implementation:
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container:
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image: python:alpine3.6
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command:
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- sh
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- -c
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- |
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python -c "import random; result = 'heads' if random.randint(0,1) == 0 else 'tails'; print(result)" \
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| tee $0
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- {outputPath: output}
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"""
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flip_coin_op = components.load_component_from_text(FLIP_COIN_STR)
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PRINT_STR = """
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name: print
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description: print a message
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inputs:
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- {name: msg, type: String}
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implementation:
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container:
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image: alpine:3.6
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command:
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- echo
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- {inputValue: msg}
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"""
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print_op = components.load_component_from_text(PRINT_STR)
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@dsl.pipeline(
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name='conditional-execution-pipeline',
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description='Shows how to use dsl.Condition().'
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)
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def flipcoin_pipeline():
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flip = flip_coin_op()
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cel_condition = CEL_ConditionOp("'%s' == 'heads'" % flip.outputs['output'])
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with dsl.Condition(cel_condition.output == 'true'):
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random_num_head = random_num_op(0, 9)
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cel_condition_2 = CEL_ConditionOp("%s > 5" % random_num_head.outputs['output'])
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with dsl.Condition(cel_condition_2.output == 'true'):
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print_op('heads and %s > 5!' % random_num_head.outputs['output'])
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with dsl.Condition(cel_condition_2.output != 'true'):
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print_op('heads and %s <= 5!' % random_num_head.outputs['output'])
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with dsl.Condition(cel_condition.output != 'true'):
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random_num_tail = random_num_op(10, 19)
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cel_condition_3 = CEL_ConditionOp("%s > 15" % random_num_tail.outputs['output'])
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with dsl.Condition(cel_condition_3.output == 'true'):
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inner_task = print_op('tails and %s > 15!' % random_num_tail.outputs['output'])
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with dsl.Condition(cel_condition_3.output != 'true'):
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print_op('tails and %s <= 15!' % random_num_tail.outputs['output'])
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if __name__ == '__main__':
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from kfp_tekton.compiler import TektonCompiler
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TektonCompiler().compile(flipcoin_pipeline, __file__.replace('.py', '.yaml'))
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