Using try and next in the same step in a GCP Workflow

Question

What I have:

- wait:
    try:
        call: sys.sleep
        args:
            seconds: 5
        next: checkWorkflowInvocationStatus
    except:
        as: e
        <alert on an exception here>

The error I get:

parse error: in workflow 'main', step 'wait': unexpected entry 'next'

It works if I remove the try/except. Can next and try really not work together?

Answer 1

As per testing and replication, I've managed to fix it by aligning next: checkWorkflowInvocationStatus with try: instead of args:. My code looks like this:

- wait:
    try:
        call: sys.sleep
        args:
            seconds: 5
    next: checkWorkflowInvocationStatus
    except:
        as: e
        <alert on an exception here>

Or you may keep the same format and add a name for call: sys.sleep, e.g., sleepStep:. The code should look like this:

- wait:
    try:
      steps:
      - sleepStep:
        call: sys.sleep
        args:
            seconds: 5
        next: checkWorkflowInvocationStatus
    except:
        as: e
        <alert on an exception here>