# Copyright 2018 The Kubeflow Authors
#
# 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.

import kfp.deprecated.dsl as dsl


@dsl.pipeline(
    name='Default Value',
    description='A pipeline with parameter and default value.')
def default_value_pipeline(url='gs://ml-pipeline/shakespeare1.txt'):

    # "url" is a pipeline parameter, meaning users can provide values when running the
    # pipeline using UI, CLI, or API to override the default value.
    op1 = dsl.ContainerOp(
        name='download',
        image='google/cloud-sdk',
        command=['sh', '-c'],
        arguments=['gsutil cat %s | tee /tmp/results.txt' % url],
        file_outputs={'downloaded': '/tmp/results.txt'})
    op2 = dsl.ContainerOp(
        name='echo',
        image='library/bash',
        command=['sh', '-c'],
        arguments=['echo %s' % op1.output])
