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parallel_join_with_argo_vars.py
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parallel_join_with_argo_vars.py
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# Copyright 2020 kubeflow.org
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from kfp import dsl
def gcs_download_op(url):
return dsl.ContainerOp(
name='GCS - Download',
image='google/cloud-sdk:279.0.0',
command=['sh', '-c'],
arguments=['gsutil cat $0 | tee $1', url, '/tmp/results.txt'],
file_outputs={
'data': '/tmp/results.txt',
}
)
def echo2_op(text1, text2):
return dsl.ContainerOp(
name='echo',
image='library/bash:4.4.23',
command=['sh', '-c'],
arguments=['echo "Text 1: $0"; echo "Text 2: $1"; echo "{{inputs.parameters.gcs-download-data}}"', text1, text2]
)
@dsl.pipeline(
name='Parallel pipeline with argo vars',
description='Download two messages in parallel and prints the concatenated result and use Argo variables.'
)
def download_and_join_with_argo_vars(
url1='gs://ml-pipeline-playground/shakespeare1.txt',
url2='gs://ml-pipeline-playground/shakespeare2.txt'
):
"""A three-step pipeline with the first two steps running in parallel with Argo variables."""
download1_task = gcs_download_op(url1)
download2_task = gcs_download_op(url2)
echo_task = echo2_op(download1_task.output, download2_task.output)
if __name__ == '__main__':
from kfp_tekton.compiler import TektonCompiler
TektonCompiler().compile(download_and_join_with_argo_vars, __file__.replace('.py', '.yaml'))