Identify process instance is in progress

[aravindhrs]

@gowtham_m

I have a issue is like, a process is triggered with two identical requests, both instance are in progress hence there is no process-instance id, how can i identify that there is already a request is in progress and cancel any one of instance

Seems like you have two new processes started with different process-instance ids for same requests.

Associating a unique ProcessInstanceBusinessKey for each request when starting the process instances.

RuntimeService runtimeService = ..;
String orderId = ..;

ProcessInstance shipmentInstance = runtimeService
  .createProcessInstanceQuery()
  .processInstanceBusinessKey(orderId)
  .singleResult();

Refer the use cases for businesskeys: How to Use Business Keys? | Camunda

And the below post:

Business Key

Hi Garth, I like to think of the businessKey as the business user’s unique identifier for a process instance. Whilst the engine internals use processInstanceId, this is meaningless to the business user who can thus use something more meaningful. For example, the businessKey could be the reference number on an application form, the policy number on an insurance policy, the customer number from a CRM record, a shipping tracking number. I tend to think of a businessKey as a lot like a process va…

It can be solved by below approaches:

• By enabling uniqueness of the businessKey field in camunda tables for business-key configuration

• Configure a ExecutionListener in StartEvent of the process and query by the businessKey in runtime tables and if process already exists throw the exception if already same entity is in process.

    long processCount = execution.getProcessEngineServices().getRuntimeService()
      .createExecutionQuery().processDefinitionKey("aProcessDefinitionKey")
      .tenantIdIn("aTenantId").processInstanceBusinessKey("aBusinessKey")
      .active().count();
        if (processCount > 0) {
           throw new RuntimeException("Process already exists for businessKey: " 
            + execution.getBusinessKey());
         }