def test_exception_traceback():
# Get exception from ``sys.exc_info()``
try:
raise ValueError('Something reasonable')
except Exception as ex:
tb = exception_traceback()
assert 'ValueError: Something reasonable' in tb
def processor(worker_id=None):
"""
Queue runner. Pull a job from the queue, find the module in charge
of handling the service, and invoke the module's plugin to do so.
"""
while not exit_flag:
logger.debug('Job queue has %s items to process' % q_in.qsize())
job = q_in.get()
service = job.service
section = job.section
target = job.target
topic = job.topic
logger.debug("Processor #%s is handling: `%s' for %s" % (worker_id, service, target))
# Sanity checks.
# If service configuration or targets can not be obtained successfully,
# log a sensible error message, fail the job and carry on with the next job.
try:
service_config = context.get_service_config(service)
service_targets = context.get_service_targets(service)
if target not in service_targets:
error_message = "Invalid configuration: Topic '{topic}' points to " \
"non-existing target '{target}' in service '{service}'".format(**locals())
raise KeyError(error_message)
except Exception as ex:
logger.error("Cannot handle service=%s, target=%s: %s\n%s" % (service, target, ex, exception_traceback()))
q_in.task_done()
continue
item = {
'service' : service,
'section' : section,
'target' : target,
'config' : service_config,
'addrs' : service_targets[target],
'topic' : topic,
'payload' : job.payload,
'data' : None,
'title' : None,
'image' : None,
'message' : None,
'priority' : None
}
transform_data = job.data
item['data'] = dict(list(transform_data.items()))
item['title'] = xform(context.get_config(section, 'title'), SCRIPTNAME, transform_data)
item['image'] = xform(context.get_config(section, 'image'), '', transform_data)
item['message'] = xform(context.get_config(section, 'format'), job.payload, transform_data)
try:
item['priority'] = int(xform(context.get_config(section, 'priority'), 0, transform_data))
except Exception as e:
item['priority'] = 0
logger.warning("Failed to determine the priority, defaulting to zero: %s" % e)
if HAVE_JINJA is False and context.get_config(section, 'template'):
logger.warning("Templating not possible because Jinja2 is not installed")
if HAVE_JINJA is True:
template = context.get_config(section, 'template')
if template is not None:
try:
text = render_template(template, transform_data)
if text is not None:
item['message'] = text
except Exception as e:
logger.warning("Cannot render `%s' template: %s" % (template, e))
if item.get('message') is not None and len(item.get('message')) > 0:
st = Struct(**item)
notified = False
try:
# Fire the plugin in a separate thread and kill it if it doesn't return in 10s
module = service_plugins[service]['module']
service_logger_name = 'mqttwarn.services.{}'.format(service)
srv = make_service(mqttc=mqttc, name=service_logger_name)
notified = timeout(module.plugin, (srv, st))
except Exception as e:
logger.error("Cannot invoke service for `%s': %s" % (service, e))
if not notified:
logger.warning("Notification of %s for `%s' FAILED or TIMED OUT" % (service, item.get('topic')))
else:
logger.warning("Notification of %s for `%s' suppressed: text is empty" % (service, item.get('topic')))
q_in.task_done()
logger.debug("Thread exiting...")