Can we run workflow in loop

[heramb_sawant]

Hi,
I have workflow with 4  tasks that run one after another . Currently this workflow task's various information for particular application , I want to run the same workflow for multiple applications.  How can I run it in loop or is there any workaround.


Regards,
heramb Sawant

[StrangerThing]

Check out running a Workflow from a Workflow (sub-Workflows):  Run workflow action for Workflows — Dynatrace Docs

[AurelienGravier]

Hello @heramb_sawant ,

First of all, add a task to generate your applications list.

Afterwards, create a child task and use the Loop Task option by adding the List related to the previous task and use a item variable name :

And finally you can use {{ _.item }} or in case of the Run JavaScript action, you can use loopItem function to access the item in each iteration :

Regards Aurélien.

[heramb_sawant]

Hi 
I built 2 workflows

workflow 1 - having  "run workflow" task . In loop task, there is  item variable name "item" and its value is json object i.e. 
[{

"cluster" : "Cluster1",
"namespace" : "namespace1"

},
{
"cluster" : "Cluster2",
"namespace" : "namespace2"

}

]

This workflow calling another workflow i.e workflow2.


Here in workflow2 , I am trying to print item values of workflow 1 but getting error in javascript code.

console.log(loopItemValue.value);

error : can not read properties of null(reading 'value)


Please correct me 

[AurelienGravier]

Hello @heramb_sawant 

You should use something like that :

// import of sdk modules
import { execution } from '@dynatrace-sdk/automation-utils';

export default async function ({ loopItemValue }) {

  // load the execution object using the current loopItemValue
  const exe = await execution(loopItemValue);
  
  const checkResult = await exe.result('workflow1');

  const json = checkResult['json'];
  
  // APPELER L'ATTRIBUT NAME
  console.log('Cluster : ', json.cluster);
  console.log('Namespace : ', json.namespace);

}

https://docs.dynatrace.com/docs/shortlink/workflows-action-javascript#example-using-the-automation-u...

Regards Aurélien

[heramb_sawant]

getting error  in workflow2,

define_application_details:
Uncaught (in promise) 404: Task run_workflow_1 does not exist.

here "run_workflow_1 " is task from workflow 1. I tried with workflow1 names but same error

[AurelienGravier]

@heramb_sawant 

I’m not sure I fully understand what you mean.

You’re talking about a “workflow 1” and a “workflow 2,” whereas I’m referring to "tasks" within the same workflow.

In my case, you run check-result on the previous task name, which returns the JSON.

Regards

[heramb_sawant]

I am trying to  call workflow 2 from workflow 1.

Workflow 1 has task that calls workflow 2. This task also has loopitem i.e. "item" having json object as value.
Then trying to access this loopitem values in workflow 2 but getting error.

[heramb_sawant]

Any help will  be appreciated.

[AurelienGravier]

Ok, so to assist you further, 

Export your workflow as a template (make sure it doesn’t contain any personal data),

Or Take a screenshot of Workflow 1 and another screenshot of the results of the task that calls Workflow 2.

[heramb_sawant]

Hi ,

Please find the SS for your reference.

workflow 1 has task "run_workflow_1" having input values

results of the task that calls Workflow 2:

I  want to receive input values in workflow 2.

[AurelienGravier]

Ok, I understand your need better.

I have never experimented with this, but in my opinion you need to add {{ _.item }} in your input:

And you must use the input() expression in the sub-workflow :

{{ input('language') }} {{ input('topic') }

Sources:

• https://docs.dynatrace.com/docs/analyze-explore-automate/workflows/default-workflow-actions/run-work...

• https://docs.dynatrace.com/docs/shortlink/automation-workflow-expression-reference#input

Regards

[heramb_sawant]

how to use this {{ input('language') }} {{ input('topic') } in javascript task of sub workflow i.e workflow2

[heramb_sawant]

any help regarding receiving input values in JS task would be appreciated.

[heramb_sawant]

Hi,
Any help to receive input values from one workflow to another workflow