def prepare_dns_status():
'''
(dns_name, dns_is_online)
'''
pool = ec2_pool.get_worker_pool()
dns_name = pool.get_load_balancer_dns_name()
dns_is_online = False
try:
r = requests.head('http://' + dns_name, timeout=5)
if r.status_code == 200:
dns_is_online = True
except Exception:
pass
return (dns_name, dns_is_online)
return average_cpu_util_for_instance
def get_http_request_count_for_registered_instances(self):
instances_data_points = {}
for instance_id in self._pool.get_registered_instances_ids():
instances_data_points[
instance_id] = self._api.get_http_request_per_minute_count([{
'Name':
'InstanceId',
'Value':
instance_id
}])['Datapoints']
return instances_data_points
def get_number_of_running_workers_in_pool(self):
work_count = 0
health_status = self._pool.get_registered_instances_health_status()
for instance_id in health_status:
if (health_status[instance_id] in self._pool.get_working_status()):
work_count += 1
return work_count
helper = PoolMonitoringHelper(ec2_pool.get_worker_pool())
def get_monitor_helper():
return helper
downsized_count = math.floor(worker_count * self._shrinking_ratio)
if (downsized_count < min_required_worker):
downsized_count = min_required_worker
self._pool.decrease_pool_by_size(worker_count - downsized_count)
self._next_pool_size = downsized_count
return True
def desired_worker_num_reached(self):
return self._pool_monitor_helper.get_number_of_running_workers_in_pool(
) == self._next_pool_size
def toggle_scaler(self):
if (self._running):
self._state_manager = None
self._running = not self._running
else:
self._state_manager = auto_scaler_state_manager.ScalerStateManager(
self, self._pool_monitor_helper)
self._running = not self._running
helper = pool_monitor_helper.get_monitor_helper()
pool = ec2_pool.get_worker_pool()
auto_scaler = AutoScaler(helper, pool)
def get_auto_scaler():
return auto_scaler
def decrease_pool_handler(num=1):
pool = ec2_pool.get_worker_pool()
pool.decrease_pool_by_size(num)
return redirect('/')
def prepare_instance_status_info():
pool = ec2_pool.get_worker_pool()
instances_status_counts = {}
return pool.get_registered_instances_health_status()