From 510bb2116ea3e6c0d2559fe1b0c465f010d74bfb Mon Sep 17 00:00:00 2001 From: Marco Capitani Date: Mon, 13 Nov 2017 12:18:55 +0100 Subject: utils, examples: Add ExperimentManager CM Adds an ExperimentManager context manager for scripts: - No more ugly stack traces after execution if something goes wrong - No more ugly and easy to forget try-finally blocks --- rumba/utils.py | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 rumba/utils.py (limited to 'rumba/utils.py') diff --git a/rumba/utils.py b/rumba/utils.py new file mode 100644 index 0000000..5348b0a --- /dev/null +++ b/rumba/utils.py @@ -0,0 +1,27 @@ +import time + +import rumba.log as log +import rumba.model as model + +logger = log.get_logger(__name__) + + +class ExperimentManager(object): + + def __init__(self, experiment, do_swap_out=True): + assert isinstance(experiment, model.Experiment), \ + 'An experiment instance is required.' + self.experiment = experiment + self.do_swap_out = do_swap_out + + def __enter__(self): + pass + + def __exit__(self, exc_type, exc_val, exc_tb): + if self.do_swap_out: + self.experiment.swap_out() + if exc_val is not None: + logger.error('Something went wrong. Got %s: %s', + type(exc_val).__name__, str(exc_val)) + time.sleep(0.1) # Give the queue logger enough time to flush. + return True # Suppress the exception we logged: no traceback. -- cgit v1.2.3