docs/source/tasks/sub_workflow.rst

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Sub Workflow
============

Task trigger exists workflow run, should make sure workflow exists in current project when you create
sub workflow task.

Example
-------

we have a simple example about how to use sub workflow task, when we want to create a sub workflow task,
we should makeh sure in already exists in current project. So the first thing we do is to create a workflow
will be used as sub workflow task.

.. literalinclude:: ../../../src/pydolphinscheduler/examples/task_sub_workflow_example.py
   :start-after: [start sub_workflow_declare]
   :end-before: [end sub_workflow_declare]

workflow with name ``sub_workflow_upstream`` would be create after we exists ``submit`` method.

Then we create a main workflow, and the sub workflow task will connect to workflow we created before.

.. literalinclude:: ../../../src/pydolphinscheduler/examples/task_sub_workflow_example.py
   :start-after: [start sub_workflow_task_declare]
   :end-before: [end sub_workflow_task_declare]

Finish we can submit or run sub workflow task by ``submit`` or ``run`` method. And you can also use workflow
already exists in current project instead of create a new one.

.. note::

    We could only run the workflow contains sub workflow task, and the sub workflow task will trigger the
    sub workflow run.


.. literalinclude:: ../../../src/pydolphinscheduler/examples/task_sub_workflow_example.py
   :start-after: [start workflow_declare]
   :end-before: [end workflow_declare]

Dive Into
---------

.. automodule:: pydolphinscheduler.tasks.sub_workflow


YAML file example
-----------------

.. literalinclude:: ../../../examples/yaml_define/SubWorkflow.yaml
   :start-after: # under the License.
   :language: yaml



example_sub_workflow.yaml:

.. literalinclude:: ../../../examples/yaml_define/example_sub_workflow.yaml
   :start-after: # under the License.
   :language: yaml