You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
1.9 KiB
53 lines
1.9 KiB
3 years ago
|
# Licensed to the Apache Software Foundation (ASF) under one
|
||
|
|
# or more contributor license agreements. See the NOTICE file
|
||
|
|
# distributed with this work for additional information
|
||
|
|
# regarding copyright ownership. The ASF licenses this file
|
||
|
|
# to you 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.
|
||
|
|
|
||
|
|
r"""
|
||
|
|
A tutorial example take you to experience pydolphinscheduler.
|
||
|
|
|
||
|
|
After tutorial.py file submit to Apache DolphinScheduler server a DAG would be create,
|
||
|
|
and workflow DAG graph as below:
|
||
|
|
|
||
|
|
--> task_child_one
|
||
|
|
/ \
|
||
|
|
task_parent --> --> task_union
|
||
|
|
\ /
|
||
|
|
--> task_child_two
|
||
|
|
|
||
|
|
it will instantiate and run all the task it have.
|
||
|
|
"""
|
||
|
|
|
||
|
|
from pydolphinscheduler.core.process_definition import ProcessDefinition
|
||
|
|
from pydolphinscheduler.tasks.shell import Shell
|
||
|
|
|
||
|
|
with ProcessDefinition(
|
||
|
|
name="tutorial",
|
||
|
|
schedule="0 0 0 * * ? *",
|
||
|
|
start_time="2021-01-01",
|
||
|
|
tenant="tenant_exists",
|
||
|
|
) as pd:
|
||
|
|
task_parent = Shell(name="task_parent", command="echo hello pydolphinscheduler")
|
||
|
|
task_child_one = Shell(name="task_child_one", command="echo 'child one'")
|
||
|
|
task_child_two = Shell(name="task_child_two", command="echo 'child two'")
|
||
|
|
task_union = Shell(name="task_union", command="echo union")
|
||
|
|
|
||
|
|
task_group = [task_child_one, task_child_two]
|
||
|
|
task_parent.set_downstream(task_group)
|
||
|
|
|
||
|
|
task_union << task_group
|
||
|
|
|
||
|
|
pd.run()
|