How to return back an error boundary event

Camunda 7 Topics
1

I have a 3 delegate classes that have similar below code. I’m setting the createConnectorStatus, topicCreateStatus and kestraCreateStatus to false if the exception is triggered:
catch (IllegalArgumentException e){
log.warn(“Business error while creating connectorForm”, e);
execution.setVariable(“createConnectorStatus”, false);
execution.setVariable(“errorMessage”, e.getMessage());
throw new BpmnError(“CREATE_CONNECTOR_ERROR”, e.getMessage());
}
I’m reading the status of those variables (createConnectorStatus, topicCreateStatus and kestraCreateStatus) in the controller and return 400 error response if any is false as below:
if (Boolean.FALSE.equals(responseVars.get(“kestraCreateStatus”))
|| Boolean.FALSE.equals(responseVars.get(“topicCreateStatus”))
|| Boolean.FALSE.equals(responseVars.get(“createConnectorStatus”))) {
String errorMessage = String.valueOf(responseVars.get(“errorMessage”));
throw new IllegalArgumentException("Error while creating connector: " + errorMessage);
}

I wanted to know is there a way to do that from the modeler? or is this a best practice?

2

Hi @hishamkhartoum
Using the modeler, you can define variable names for both error code and error message as follows

image
image1153×235 29.8 KB

Variables will be created automatically.

Assuming the following thrown statement
throw new BpmnError(“CREATE_CONNECTOR_ERROR”, e.getMessage());
, the created code variable “errCode“ will hold the error code “CREATE_CONNECTOR_ERROR” ,and
the created message variable “errMessage“ will hold the string result of e.getMessage()