Example using child workflows

[sce9sc]

Since, according to the documentation, having a workflow that spawns many workers is not ideal and the proposed solution is to have child workflows can you please point me to the right direction on how to implement a workflow that schedules other workworkflows as child workflows.

Also according to the documentation

Because child workflows are independent of their parents, terminating
 a parent workflow does not affect any child workflows. 
You must terminate each child workflow independently using its instance ID.

How do you accomplish the above ?

Thanks,
Great work.

[shubham1172]

Hi @sce9sc, you can see callSubWorkflow here to call a child-workflow.

js-sdk/src/workflow/runtime/WorkflowContext.ts

Line 107 in 5c2b40a

public callSubWorkflow<TInput, TOutput>(

Please see https://github.com/dapr/python-sdk/blob/main/examples/demo_workflow/app.py#L59 for an example in Python SDK.

We need to add an example in this SDK as well. Please feel free to drop a PR if you are willing to contribute 🙂

[sce9sc]

Thanks I will try to create an example . I've seen that there is a test that I can use also .

I saw that child workflows needs to be registrered together with the parent workflows. And the parrent workflow can then call that workflow. What if I wanted that child workflow to be written in another language ? How can this be accomplished. The reason behind this is that I might want to create an orchestration workflow in one language and the child workflows in another.

Sincerely thank you for your prompt replies.

[dapr-bot]

This issue has been automatically marked as stale because it has not had activity in the last 60 days. It will be closed in the next 7 days unless it is tagged (pinned, good first issue, help wanted or triaged/resolved) or other activity occurs. Thank you for your contributions.

[shubham1172]

/keep-alive

[dapr-bot]

This issue has been automatically marked as stale because it has not had activity in the last 60 days. It will be closed in the next 7 days unless it is tagged (pinned, good first issue, help wanted or triaged/resolved) or other activity occurs. Thank you for your contributions.

[dapr-bot]

This issue has been automatically closed because it has not had activity in the last 67 days. If this issue is still valid, please ping a maintainer and ask them to label it as pinned, good first issue, help wanted or triaged/resolved. Thank you for your contributions.