Error Handling

[MaheshkumarSundaram]

Hi @ralphhanna

Reagrding error handling, consider the below example:

For testing, I have the below service:

    async ErrorHandleTest(input, context) {
        if (Math.random() < 0.1) {
            return { bpmnError: 'Something wrong' }; // my required ERROR message
        } else {
           // no error
            return;
        }
    }

Where is that error and its message stored and how to access it?

[ralphhanna]

Not anywhere, but if the error handler is error specific it can store it anywhere.

Any suggestions?

One possible change:
code before:

    async processError(errorCode,callingEvent) {

        let errorHandlerToken = this.getScopeCatchEvent('error',errorCode);
        if (errorHandlerToken) {
            await errorHandlerToken.signal(null);
            this.currentItem.status = ITEM_STATUS.end;
            await this.end(true);
        }
        else {
            this.log("Aborting due to error");
            await this.execution.terminate();
            return;
        }
    }

Code After:

    async processError(errorCode,callingEvent) {

        let errorHandlerToken = this.getScopeCatchEvent('error',errorCode);
        if (errorHandlerToken) {
            await errorHandlerToken.signal(errorCode);
            this.currentItem.status = ITEM_STATUS.end;
            await this.end(true);
        }
        else {
            this.log("Aborting due to bpmnError",errorCode)
            await appDelegate.bpmnError(errorCode,execution); //this.execution.terminate();
            return;
        }

    }
    

[MaheshkumarSundaram]

@ralphhanna

Wouldn't it better if the error message/code is automatically stored in the catch event (probably vars but not sure whether vars would be ideal for this though!!!)? In case of not being caught, automatically storing the error message/code in the service or script task itself.

This would be helpful to see what went wrong when coming back to that item.

what do you think?

[MaheshkumarSundaram]

@ralphhanna, any thoughts on this?

[ralphhanna]

@MaheshkumarSundaram
Hi, After long thoughts, I have added a new variable item.statusDetails that contains and object with bpmnError information.

Please check new release 2.2.10

Thanks

[MaheshkumarSundaram]

Thanks @ralphhanna.