How to read process status information in Camunda?

Camunda 7 Topics Discussion & Questions
1

I want to build simple approval process; let say two levels of approval. So I will have:

start=>approval 1=>approval2=>end

I call rest from application to initiate process:

process-definition/key/approval-test-process/start

In result I get:

{
    "links": [
        {
            "method": "GET",
            "href": "http://localhost:8080/engine-rest/process-instance/11193cac-8c9e-11eb-a1a7-049226bdb658",
            "rel": "self"
        }
    ],
    "id": "11193cac-8c9e-11eb-a1a7-049226bdb658",
    "definitionId": "approval-test-process:2:ab34d9fa-8c03-11eb-81fa-049226bdb658",
    "businessKey": null,
    "caseInstanceId": null,
    "ended": false,
    "suspended": false,
    "tenantId": null
}

Is there any method to get current state of the process (reached ‘approval2’ level or still waits for approval1?) ? All the time using same ID or other variable. Without reading all task and getting right ID.
How do you handle that?
Regards

2

It depends on the level of detail you’re looking for.
If there’s a global status, you could set it as a variable, update it as the process passes through milestones for-instances and then query the instance (or better businesskey) for the variable in question.

Alternatively you could just query for any active activity instances for a given process instance id

3

Yes, depends. But is there any REST method to read status of ALL tasks at once from process?

4

Yes.

Or for just user tasks you can check this.

5

Thank you.
Really hard to start with Camunda. What I understood is that it would be right approach to build some external query process that fetch list of tasks from all nodes of process and build a list in application?

In other way I would have to query each taks in diagram and that would be pain.

So Camunda is rather to distribute messages but not to inintiate some processes/jobs in external system (mainly because of performance reason) - right?