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    Vitaly Shulgin

    1 year ago
    How to re-schedule flow which already exists? We have scheduler job, and registered flow, is it possible to re-schedule it ?
    m

    Mariia Kerimova

    1 year ago
    Hello Vitaly! 👋 You can update the schedule of the flow in Settings -> Schedules tab.
    Did you explicitly set a schedule on that flow?
    v

    Vitaly Shulgin

    1 year ago
    Well, yes, but, we need to do it from within nightly running flow, UI is not an option
    Is there a way to load exsiting flow and re-schedule it, or clone existing flow with another name and schedule
    There is planner, or scheduler, which is working nightly, so, what can work for us: • register new flow with new schedule, afaik, registering of flow from within another running flow is not supported • clone exsting flow and updated schedule on it (how to do it)? • and, worst option, create many schedules of the same flow with different parameters (how to load existing flow?) any ideas?
    m

    Mariia Kerimova

    1 year ago
    My first thought would be to register a new flow with updated schedule, but let me ask the team, and I'll get back.
    There are two ways: • create ad-hoc flow runs with specified start times using the API • use the GraphQL API to change the schedule on an existing flow -  
    set_flow_group_schedule
    mutation {
      set_flow_group_schedule(input:
      	{flow_group_id: "<flow_group_id>", 
          cron_clocks: [{cron: "*/5 * * * *"}]}) {
        success
      }
    }
    r

    Ruslan

    1 year ago
    why not to re-register?
    It was not supported, I'm not sure if something changed
    @Mariia Kerimova Do I understand right that registering another flow from within running flow is not yet supported?
    m

    Mariia Kerimova

    1 year ago
    Hey @Vitaly Shulgin! Right, registering flow within running flow is not currently supported.
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    Vitaly Shulgin

    1 year ago
    Is there a way to clone flow, using GrpahQL API?
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    Mariia Kerimova

    1 year ago
    There is no clone flow option, but can you provide more information what you are trying to achieve, and we will try to find a workaround together? Did you fix the schedule on the flow btw?
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    Vitaly Shulgin

    1 year ago
    No, I did not fixed
    What we actually need: • read from database some data, and, based on that data, crate flow with specific name to be executed with specific parameter during next day • the idea was is to run nightly flow wich do it, no matter how, registering new flow or cloning existing one
    so, flows are to be generated and scheduled nightly, and it looks like the only one option to do it, is to run by cron some python script, which is looking ugly, taking into account that we're running prefect
    actually, cloning existing flow with another name and creating for it specific schedule with specific paramter should be enough
    it already referencing correct set of tasks, and correct image which is to be used
    Hey @Mariia Kerimova any ideas?
    Jim Crist-Harif

    Jim Crist-Harif

    1 year ago
    Hi Vitaly,
    read from database some data, and, based on that data, crate flow with specific name to be executed with specific parameter during next day
    Is the flow different for each run, or the same (or one of a few existing flows)? If you don't need a new dynamic flow for each run, just a dynamic run of it with specific parameters/a scheduled time you could make use of
    StartFlowRun
    to schedule a flow run for a specific flow with specific parameters at a scheduled time in the future. This would remove the need for dynamic registration of new flows, as you'd only be creating new flow runs for a specific flow.
    v

    Vitaly Shulgin

    1 year ago
    Hi @Jim Crist-Harif, thanks, looks like it will work, it would be nice to have a feature,
    ScheduleFlowRun
    , where the regular prefect schedules, clocks and etc. could be used, is there any plan for something like
    ScheduleFlowRun
    ?
    Jim Crist-Harif

    Jim Crist-Harif

    1 year ago
    Schedules are associated with a flow, not a flow run, so if you intend
    ScheduleFlowRun
    to set a new schedule on a flow run that doesn't really make sense (as schedules go on the flow).
    StartFlowRun
    can schedule a new flow run to run in the future at a specified time, giving you the option of determining that time using any method you choose. In what way is this insufficient for your use case?