Scheduling of workflows

[shivamkm07]

In what area(s)?

/area runtime

/area operator

/area placement

/area docs

/area test-and-release

Describe the feature

Dapr workflows should support scheduling of workflows at a later time.

As per implementation, it seems that users are expected to pass time as metadata while sending the request with startTime set as dapr.workflow.start_time:

dapr/pkg/runtime/wfengine/component.go

Line 96 in 328b4b3

if startTimeRFC3339, ok := req.Options["dapr.workflow.start_time"]; ok {

However, this is not respected and carried at all places.

1. It is not being set as part of the http request:

   dapr/pkg/http/api_workflow.go

   Line 195 in 328b4b3

   return UniversalHTTPHandler(

2. DTF-Go(which dapr uses for orchestration management) doesn't forward the scheduled time to backend: Scheduling of workflows microsoft/durabletask-go#57
3. Once the above issue is resolved, required delay needs to be added while creating the workflow reminder to actually schedule the workflow. Currently it schedules immediately even if scheduledTime is passed while creating the workflow:

   dapr/pkg/runtime/wfengine/workflow.go

   Line 258 in 328b4b3

   if _, err := wf.createReliableReminder(ctx, actorID, "start", nil, 0); err != nil {

Release Note

RELEASE NOTE:

[msfussell]

@shivamkm07 Before merging this PR, please create a Docs PR for the workflow changes

[shivamkm07]

@shivamkm07 Before merging this PR, please create a Docs PR for the workflow changes

This PR mostly won't be going in 1.13. For other PR that has been merged, tracking issue was created: dapr/docs#3949. Will create the PR soon.

[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.