def test_collect_only_alive_interfaces(self):
container = SystemContainer()
container.discover_objects()
os_obj = container.objects.values().pop()
collector = SystemMetricsCollector(object=os_obj)
collector.collect()
collector.collect() # double collect is needed, because otherwise we do not collect metrics properly
# get interfaces info
all_interfaces = netifaces.interfaces()
alive_interfaces = set()
down_interfaces = set()
for interface_name, interface in psutil.net_if_stats().iteritems():
if interface.isup:
alive_interfaces.add(interface_name)
else:
down_interfaces.add(interface_name)
# check
collected_metrics = os_obj.statsd.current
net_metrics_found = False
for metric in collected_metrics['counter'].keys():
if metric.startswith('system.net.') and '|' in metric:
net_metrics_found = True
metric_name, label_name = metric.split('|')
assert_that(all_interfaces, has_item(label_name))
assert_that(alive_interfaces, has_item(label_name))
assert_that(down_interfaces, not_(has_item(label_name)))
assert_that(net_metrics_found, equal_to(True))
def test_flush_aggregation(self):
container = SystemContainer()
container.discover_objects()
os_obj = container.objects.values().pop()
collector = SystemMetricsCollector(object=os_obj)
collector.collect()
collector.collect() # double collect is needed, because otherwise we do not collect metrics properly
flush = collector.statsd.flush()
for type in flush['metrics'].keys(): # e.g. 'timer', 'counter', 'gauge', 'average'
for key in flush['metrics'][type].keys():
# Make sure there is only one item per item in the flush.
assert_that(len(flush['metrics'][type][key]), equal_to(1))