AEMaaCS GOTO workflow step, not routing to next step. javax.jcr.PathNotFoundException.

[subsul1]

Hi wonderful people,

I have a custom post-processing workflow model which gets triggered by CustomDamWorkflowRunnerImpl.

This gets triggered after AEM completes all of its internal asset compute processing.

The first step in the workflow model is a GOTO process which calls a sling service to determine the return value. 

GOTO process ECMA script below -

function check() {
  var returnVal = false;
  var service = sling.getService(Packages.com.adobe.service.TrialServiceInterface);
  if (service && service.isEnabled()) {
    returnVal = true
  }
  log.info("Return value: " + returnVal);
  return returnVal;
}

Workflow model: Based off the script result, GOTO step should either redirect to the TARGET_NODE_PATH step or carry on with its normal route to the next step.

Issue:

I see the ECMA script executing successfully.
It then it leads to a PathNotFoundException (possibly during its internal routing mechanism), but the path exists in var. I have a hunch this is permission related, any insights on how to tackle this issue is highly appreciated. 

05.05.2022 23:45:58.349 [cm-p16597-e60753-aem-author-5dcc8c5cb8-7l9bn] *INFO* [JobHandler: /var/workflow/instances/server1227/2022-05-05/asset-post-processing_1:/content/dam/trial-dam/camino.jpg] libs.workflow.scripts.dynamic$ecma Return value: false
05.05.2022 23:45:58.352 [cm-p16597-e60753-aem-author-5dcc8c5cb8-7l9bn] *ERROR* [JobHandler: /var/workflow/instances/server1227/2022-05-05/asset-post-processing_1:/content/dam/trial-dam/camino.jpg] com.adobe.granite.workflow.core.job.JobHandler Error executing workflow step
com.adobe.granite.workflow.WorkflowException: Process execution resulted in an error
	at com.adobe.granite.workflow.core.job.HandlerBase.executeProcess(HandlerBase.java:204) [com.adobe.granite.workflow.core:2.1.78]

Caused by: com.adobe.granite.workflow.WorkflowException: Unable to retrieve workflow instance: /var/workflow/instances/server1227/2022-05-05/asset-post-processing_1
	at com.adobe.granite.workflow.core.jcr.WorkflowManager.getWorkflowInstance(WorkflowManager.java:191) [com.adobe.granite.workflow.core:2.1.78]
	... 8 common frames omitted

Caused by: javax.jcr.PathNotFoundException: /var/workflow/instances/server1227/2022-05-05/asset-post-processing_1
	at org.apache.jackrabbit.oak.jcr.session.SessionImpl.getItem(SessionImpl.java:401) [org.apache.jackrabbit.oak-jcr:1.42.0.T20220401090340-a7d9bc5]
	at com.adobe.granite.repository.impl.CRX3SessionImpl.getItem(CRX3SessionImpl.java:180) [com.adobe.granite.repository:1.8.28]
	at com.adobe.granite.workflow.core.jcr.WorkflowManager.getWorkflowNode(WorkflowManager.java:1045) [com.adobe.granite.workflow.core:2.1.78]
	at com.adobe.granite.workflow.core.jcr.WorkflowManager.getWorkflowInstance(WorkflowManager.java:185) [com.adobe.granite.workflow.core:2.1.78]
	... 13 common frames omitted

Thanks in advance.

[aanchal-sikka · Accepted solution]

For workflow steps to navigate properly, we need to assure both /conf and /var are in sync.

Whenever any changes are made to a workflow, please sync the corresponding node from:

• /conf/global/settings/workflow/models
• /var/workflow/models

In case of issues, restore your codebase to last good code, making changes again and sync the /conf and /var nodes.

[kautuk_sahni]

@subsul1 Did you find the suggestions from aanchal helpful? Please let us know if more information is required. Otherwise, please mark the answer as correct for posterity. If you have found out solution yourself, please share it with the community.