class Deployer(ABCDeployer):
def __init__(self):
self.heatclient = HeatClient()
conf = SysUtil().get_sys_conf()
LOG.debug("Get runtime agent: " + conf['runtime_agent'])
self.runtime_agent = FactoryAgent().get_agent(conf['runtime_agent'])
#self.register_agent = FactoryAgent().get_agent(conf['register_agent'])
self.template_manager = FactoryAgent().get_agent(
conf['template_manager'])
self.db = FactoryAgent().get_agent(conf['database_manager'])
self.checker = FactoryAgent().get_agent(conf['checker'])
def deploy(self, topology):
#deploy only when the ext_id is None otherwise the topology is already deployed
if topology.ext_id is None:
LOG.debug("Start Deploying topology %s" % topology.name)
_name = topology.ext_name
_template = self.template_manager.get_template(topology)
LOG.debug("Stack name: %s" % _name)
LOG.debug("Template: %s" % _template)
try:
stack_details = self.heatclient.deploy(name=_name,
template=_template)
LOG.debug("stack details after deploy: %s" % stack_details)
if stack_details:
topology.ext_id = stack_details['stack'].get('id')
LOG.debug("stack id: %s" % topology.ext_id)
else:
raise Exception('Error during deployment on the testbed.')
except Exception, exc:
LOG.exception(exc)
topology.state = 'ERROR'
topology.ext_id = None
raise
else:
class Deployer(ABCDeployer):
def __init__(self):
self.heatclient = HeatClient()
conf = SysUtil().get_sys_conf()
logger.debug("Get runtime agent: " + conf['runtime_agent'])
self.runtime_agent = FactoryAgent().get_agent(conf['runtime_agent'])
#self.register_agent = FactoryAgent().get_agent(conf['register_agent'])
self.template_manager = FactoryAgent().get_agent(conf['template_manager'])
self.db = FactoryAgent().get_agent(conf['database_manager'])
self.checker = FactoryAgent().get_agent(conf['checker'])
def deploy(self, topology):
#deploy only when the ext_id is None otherwise the topology is already deployed
if topology.ext_id is None:
logger.debug("Start Deploying topology %s" % topology.name)
_name = topology.ext_name
_template = self.template_manager.get_template(topology)
logger.debug("Stack name: %s" % _name)
logger.debug("Template: %s" % _template)
try:
stack_details = self.heatclient.deploy(name=_name, template=_template)
logger.debug("stack details after deploy: %s" % stack_details)
if stack_details:
topology.ext_id = stack_details['stack'].get('id')
logger.debug("stack id: %s" % topology.ext_id)
else:
raise Exception('Error during deployment on the testbed.')
except Exception, exc:
logger.exception(exc)
topology.state = 'ERROR'
topology.ext_id = None
raise
else:
def __init__(self):
self.heatclient = HeatClient()
conf = SysUtil().get_sys_conf()
logger.debug("Get runtime agent: " + conf['runtime_agent'])
self.runtime_agent = FactoryAgent().get_agent(conf['runtime_agent'])
#self.register_agent = FactoryAgent().get_agent(conf['register_agent'])
self.template_manager = FactoryAgent().get_agent(conf['template_manager'])
self.db = FactoryAgent().get_agent(conf['database_manager'])
self.checker = FactoryAgent().get_agent(conf['checker'])
def __init__(self):
self.heatclient = HeatClient()
conf = SysUtil().get_sys_conf()
LOG.debug("Get runtime agent: " + conf['runtime_agent'])
self.runtime_agent = FactoryAgent().get_agent(conf['runtime_agent'])
#self.register_agent = FactoryAgent().get_agent(conf['register_agent'])
self.template_manager = FactoryAgent().get_agent(
conf['template_manager'])
self.db = FactoryAgent().get_agent(conf['database_manager'])
self.checker = FactoryAgent().get_agent(conf['checker'])
def __init__(self, topology, runtime_agent, policy, service_instance, lock):
super(PolicyThread, self).__init__()
self.policy = policy
self.service_instance = service_instance
self.topology = topology
self.runtime_agent = runtime_agent
self.monitor = runtime_agent.monitoring_service
self.lock = lock
# hack for avoiding autoscaling at startup
self.counter = 0
self.is_stopped = False
conf = SysUtil().get_sys_conf()
self.template_manager = FactoryAgent().get_agent(conf['template_manager'])
self.db = FactoryAgent().get_agent(conf['database_manager'])
self.heat_client = HeatClient()
def __init__(self, topology, runtime_agent, policy, service_instance,
lock):
super(PolicyThread, self).__init__()
self.policy = policy
self.service_instance = service_instance
self.topology = topology
self.runtime_agent = runtime_agent
self.monitor = runtime_agent.monitoring_service
self.lock = lock
# hack for avoiding autoscaling at startup
self.counter = 0
self.is_stopped = False
conf = SysUtil().get_sys_conf()
self.template_manager = FactoryAgent().get_agent(
conf['template_manager'])
self.db = FactoryAgent().get_agent(conf['database_manager'])
self.heat_client = HeatClient()
def __init__(self, topology, runtime_agent, policy, service_instance, lock, dnsaas):
super(PolicyThread, self).__init__()
self.policy = policy
self.service_instance = service_instance
self.topology = topology
self.runtime_agent = runtime_agent
self.monitor = runtime_agent.monitoring_service
self.lock = lock
if dnsaas is not None:
self.is_dnsaas = True
self.dns_configurator = ImsDnsClient(dnsaas)
else:
self.is_dnsaas = False
self.counter = 0
self.is_stopped = False
conf = SysUtil().get_sys_conf()
self.template_manager = FactoryAgent().get_agent(conf["template_manager"])
self.db = FactoryAgent().get_agent(conf["database_manager"])
self.heat_client = HeatClient()
class PolicyThread(threading.Thread):
def __init__(self, topology, runtime_agent, policy, service_instance, lock):
super(PolicyThread, self).__init__()
self.policy = policy
self.service_instance = service_instance
self.topology = topology
self.runtime_agent = runtime_agent
self.monitor = runtime_agent.monitoring_service
self.lock = lock
# hack for avoiding autoscaling at startup
self.counter = 0
self.is_stopped = False
conf = SysUtil().get_sys_conf()
self.template_manager = FactoryAgent().get_agent(conf['template_manager'])
self.db = FactoryAgent().get_agent(conf['database_manager'])
self.heat_client = HeatClient()
def run(self):
LOG.info("Initialise policy thread for policy %s" % self.policy.name)
self.wait_until_final_state()
LOG.info("Starting policy thread for policy %s" % self.policy.name)
if self.is_stopped:
LOG.info("Cannot start policy threads. PolicyThreads are stopped.")
elif self.topology.state in ['DEPLOYED','UPDATED']:
self.start_policy_checker_si()
LOG.info("Started policy thread for policy %s" % self.policy.name)
else:
LOG.error(
"ERROR: Something went wrong. Seems to be an error. Topology state -> %s. Didn't start the PolicyThread" % self.topology.state)
def wait_until_final_state(self, final_states=[]):
if len(final_states) == 0:
final_states = ['DEPLOYED','UPDATED','ERROR','DELETED']
units_count = 0
for service_instance in self.topology.service_instances:
units_count += len(service_instance.units)
i = 0
while not self.is_stopped and not self.topology.state in final_states and not i > units_count * 100:
LOG.debug('PolicyThread for %s -> Waiting 5 seconds' % self.policy.name)
time.sleep(5)
i += 1
def active_policy_unit(self):
LOG.debug("Start active_policy check")
while not self.is_stopped:
LOG.debug("Locking policy checking by %s" % self.policy.name)
self.lock.acquire()
for unit in self.service_instance.units:
action = self.policy.action
if action.scaling_adjustment > 0:
if (len(self.service_instance.units) + action.scaling_adjustment) > self.service_instance.size.get(
'max'):
LOG.warning(
'Check upscaling - Maximum number of unit exceeded for service instance: %s' % self.service_instance.name)
break
if action.scaling_adjustment < 0:
if (len(self.service_instance.units) + action.scaling_adjustment) < self.service_instance.size.get(
'min'):
LOG.warning(
'Check downscaling - Minimum number of unit exceeded for service instance: %s' % self.service_instance.name)
break
if self.service_instance.state != 'UPDATING' and self.check_alarm_unit(unit, self.monitor):
LOG.debug('Execute action: %s' % repr(self.policy.action))
if action.adjustment_type == 'ChangeInCapacity':
self.service_instance.state = 'UPDATING'
self.topology.state = 'UPDATING'
if action.scaling_adjustment > 0:
if (len(
self.service_instance.units) + action.scaling_adjustment) <= self.service_instance.size.get(
'max'):
for i in range(action.scaling_adjustment):
_hostname = '%s-%s' % (
self.service_instance.name, str(len(self.service_instance.units) + 1))
_state = 'Initialised'
new_unit = Unit(hostname=_hostname, state=_state)
self.service_instance.units.append(new_unit)
else:
LOG.warning(
'Maximum number of unit exceeded for service instance: %s' % self.service_instance.name)
else:
if (len(
self.service_instance.units) + action.scaling_adjustment) >= self.service_instance.size.get(
'min'):
for i in range(-action.scaling_adjustment):
self.remove_unit(self.topology, self.service_instance)
else:
LOG.warning(
'Minimum number of unit exceeded for service instance: %s' % self.service_instance.name)
try:
self.db.update(self.topology)
except Exception, msg:
LOG.error(msg)
self.topology.state='ERROR'
self.topology.ext_id = None
template = self.template_manager.get_template(self.topology)
# LOG.debug("Send update to heat template with: \n%s" % template)
self.heat_client.update(stack_id=self.topology.ext_id, template=template)
LOG.info('Sleeping (cooldown) for %s seconds' % self.policy.action.cooldown)
time.sleep(self.policy.action.cooldown)
LOG.debug("Release Policy lock by %s" % self.policy.name)
self.lock.release()
LOG.info('Sleeping (evaluation period) for %s seconds' % self.policy.period)
time.sleep(self.policy.period)
class PolicyThread(threading.Thread):
def __init__(self, topology, runtime_agent, policy, service_instance,
lock):
super(PolicyThread, self).__init__()
self.policy = policy
self.service_instance = service_instance
self.topology = topology
self.runtime_agent = runtime_agent
self.monitor = runtime_agent.monitoring_service
self.lock = lock
# hack for avoiding autoscaling at startup
self.counter = 0
self.is_stopped = False
conf = SysUtil().get_sys_conf()
self.template_manager = FactoryAgent().get_agent(
conf['template_manager'])
self.db = FactoryAgent().get_agent(conf['database_manager'])
self.heat_client = HeatClient()
def run(self):
LOG.info("Initialise policy thread for policy %s" % self.policy.name)
self.wait_until_final_state()
LOG.info("Starting policy thread for policy %s" % self.policy.name)
if self.is_stopped:
LOG.info("Cannot start policy threads. PolicyThreads are stopped.")
elif self.topology.state in ['DEPLOYED', 'UPDATED']:
self.start_policy_checker_si()
LOG.info("Started policy thread for policy %s" % self.policy.name)
else:
LOG.error(
"ERROR: Something went wrong. Seems to be an error. Topology state -> %s. Didn't start the PolicyThread"
% self.topology.state)
def wait_until_final_state(self, final_states=[]):
if len(final_states) == 0:
final_states = ['DEPLOYED', 'UPDATED', 'ERROR', 'DELETED']
units_count = 0
for service_instance in self.topology.service_instances:
units_count += len(service_instance.units)
i = 0
while not self.is_stopped and not self.topology.state in final_states and not i > units_count * 100:
LOG.debug('PolicyThread for %s -> Waiting 5 seconds' %
self.policy.name)
time.sleep(5)
i += 1
def active_policy_unit(self):
LOG.debug("Start active_policy check")
while not self.is_stopped:
LOG.debug("Locking policy checking by %s" % self.policy.name)
self.lock.acquire()
for unit in self.service_instance.units:
action = self.policy.action
if action.scaling_adjustment > 0:
if (len(self.service_instance.units) +
action.scaling_adjustment
) > self.service_instance.size.get('max'):
LOG.warning(
'Check upscaling - Maximum number of unit exceeded for service instance: %s'
% self.service_instance.name)
break
if action.scaling_adjustment < 0:
if (len(self.service_instance.units) +
action.scaling_adjustment
) < self.service_instance.size.get('min'):
LOG.warning(
'Check downscaling - Minimum number of unit exceeded for service instance: %s'
% self.service_instance.name)
break
if self.service_instance.state != 'UPDATING' and self.check_alarm_unit(
unit, self.monitor):
LOG.debug('Execute action: %s' % repr(self.policy.action))
if action.adjustment_type == 'ChangeInCapacity':
self.service_instance.state = 'UPDATING'
self.topology.state = 'UPDATING'
if action.scaling_adjustment > 0:
if (len(self.service_instance.units) +
action.scaling_adjustment
) <= self.service_instance.size.get('max'):
for i in range(action.scaling_adjustment):
_hostname = '%s-%s' % (
self.service_instance.name,
str(
len(self.service_instance.units) +
1))
_state = 'Initialised'
new_unit = Unit(hostname=_hostname,
state=_state)
self.service_instance.units.append(
new_unit)
else:
LOG.warning(
'Maximum number of unit exceeded for service instance: %s'
% self.service_instance.name)
else:
if (len(self.service_instance.units) +
action.scaling_adjustment
) >= self.service_instance.size.get('min'):
for i in range(-action.scaling_adjustment):
self.remove_unit(self.topology,
self.service_instance)
else:
LOG.warning(
'Minimum number of unit exceeded for service instance: %s'
% self.service_instance.name)
try:
self.db.update(self.topology)
except Exception, msg:
LOG.error(msg)
self.topology.state = 'ERROR'
self.topology.ext_id = None
template = self.template_manager.get_template(
self.topology)
# LOG.debug("Send update to heat template with: \n%s" % template)
self.heat_client.update(stack_id=self.topology.ext_id,
template=template)
LOG.info('Sleeping (cooldown) for %s seconds' %
self.policy.action.cooldown)
time.sleep(self.policy.action.cooldown)
LOG.debug("Release Policy lock by %s" % self.policy.name)
self.lock.release()
LOG.info('Sleeping (evaluation period) for %s seconds' %
self.policy.period)
time.sleep(self.policy.period)
class PolicyThread(threading.Thread):
def __init__(self, topology, runtime_agent, policy, service_instance, lock, dnsaas):
super(PolicyThread, self).__init__()
self.policy = policy
self.service_instance = service_instance
self.topology = topology
self.runtime_agent = runtime_agent
self.monitor = runtime_agent.monitoring_service
self.lock = lock
if dnsaas is not None:
self.is_dnsaas = True
self.dns_configurator = ImsDnsClient(dnsaas)
else:
self.is_dnsaas = False
self.counter = 0
self.is_stopped = False
conf = SysUtil().get_sys_conf()
self.template_manager = FactoryAgent().get_agent(conf["template_manager"])
self.db = FactoryAgent().get_agent(conf["database_manager"])
self.heat_client = HeatClient()
def run(self):
logger.info("Initialise policy thread for policy %s" % self.policy.name)
self.wait_until_final_state()
logger.info("Starting policy thread for policy %s" % self.policy.name)
if self.is_stopped:
logger.info("Cannot start policy threads. PolicyThreads are stopped.")
elif self.topology.state in ["DEPLOYED", "UPDATED"]:
self.start_policy_checker_si()
logger.info("Started policy thread for policy %s" % self.policy.name)
else:
logger.error(
"ERROR: Something went wrong. Seems to be an error. Topology state -> %s. Didn't start the PolicyThread"
% self.topology.state
)
def wait_until_final_state(self, final_states=[]):
if len(final_states) == 0:
final_states = ["DEPLOYED", "UPDATED", "ERROR", "DELETED"]
units_count = 0
for service_instance in self.topology.service_instances:
units_count += len(service_instance.units)
i = 0
while not self.is_stopped and not self.topology.state in final_states and not i > units_count * 100:
logger.debug("PolicyThread for %s -> Waiting 5 seconds" % self.policy.name)
time.sleep(5)
i += 1
def check_alarm_unit(self, unit, monitoring_service):
logger.debug("checking for alarms")
alarm = self.policy.alarm
logger.debug("request item value: %s" % unit.hostname)
item_value = monitoring_service.get_item(
res_id=unit.ext_id, item_name=alarm.meter_name, kwargs={"period": alarm.evaluation_periods}
)
# item_value = 50
logger.debug("received item value: %s" % item_value)
if alarm.comparison_operator == ">" or alarm.comparison_operator == "gt":
logger.debug("Check upscaling: check that item value is bigger than threshold")
if item_value > alarm.threshold:
# hack for demo
self.counter += 1
if self.counter > 1:
logger.info("Counter %s Trigger the action: %s" % repr(self.counter, self.policy.action))
return True
else:
logger.info(
"Not triggering action %s since the counter is still under 1 (%s)"
% (repr(self.policy.action), self.counter)
)
return False
else:
logger.debug("Check upscaling: item value is lower than threshold")
elif alarm.comparison_operator == "<" or alarm.comparison_operator == "lt":
logger.debug("Check downscaling: check that item value is lower than threshold")
if item_value < alarm.threshold:
logger.info("Trigger the action: %s" % repr(self.policy.action))
return True
else:
logger.debug("Check downscaling: item value is bigger than threshold")
logger.debug("Check item values finished")
return False
def start_policy_checker_si(self):
logger.debug(
"Start active_policy check for policy %s on service instance %s"
% (self.policy.name, self.service_instance.name)
)
while not self.is_stopped:
logger.debug("Locking policy checking from %s" % self.policy.name)
self.lock.acquire()
logger.debug("Locked policy checking from %s" % self.policy.name)
action = self.policy.action
if action.scaling_adjustment > 0:
if (len(self.service_instance.units) + action.scaling_adjustment) > self.service_instance.size.get(
"max"
):
logger.warning(
"Check upscaling - Maximum number of unit exceeded for service instance: %s"
% self.service_instance.name
)
logger.debug("Release Policy lock by %s" % self.policy.name)
self.lock.release()
time.sleep(self.policy.period)
continue
if action.scaling_adjustment < 0:
if (len(self.service_instance.units) + action.scaling_adjustment) < self.service_instance.size.get(
"min"
):
logger.warning(
"Check downscaling - Minimum number of unit exceeded for service instance: %s"
% self.service_instance.name
)
logger.debug("Release Policy lock by %s" % self.policy.name)
self.lock.release()
time.sleep(self.policy.period)
continue
if self.service_instance.state != "UPDATING" and self.check_alarm_si():
logger.debug("Execute action: %s" % repr(self.policy.action))
if action.adjustment_type == "ChangeInCapacity":
self.service_instance.state = "UPDATING"
self.topology.state = "UPDATING"
if action.scaling_adjustment > 0:
logger.info("executing scaling out action ")
info = {
"so_id": "idnotusefulhere",
"sm_name": "imsaas",
"so_phase": "update",
"phase_event": "start",
"response_time": 0,
"tenant": "mcntub",
}
self.start_time = time.time()
info_json = json.dumps(info)
glogger.debug(info_json)
if (
len(self.service_instance.units) + action.scaling_adjustment
) <= self.service_instance.size.get("max"):
for i in range(action.scaling_adjustment):
_hostname = "%s-%s" % (
self.service_instance.name,
str(len(self.service_instance.units) + 1),
)
_state = "DEFINED"
new_unit = Unit(hostname=_hostname, state=_state)
new_unit.service_instance_id = self.service_instance.id
self.service_instance.units.append(new_unit)
self.db.persist(new_unit)
else:
logger.warning(
"Maximum number of unit exceeded for service instance: %s" % self.service_instance.name
)
else:
logger.info("executing scaling in action ")
if (
len(self.service_instance.units) + action.scaling_adjustment
) >= self.service_instance.size.get("min"):
for i in range(-action.scaling_adjustment):
removed_unit = self.remove_unit(self.topology, self.service_instance)
self.db.remove(removed_unit)
else:
logger.warning(
"Minimum number of unit exceeded for service instance: %s" % self.service_instance.name
)
topology = self.db.update(self.topology)
template = self.template_manager.get_template(self.topology)
# logger.debug("Send update to heat template with: \n%s" % template)
if action.scaling_adjustment <= 0:
logger.info("provisioning the unit after scaling in operation")
self.configure_after_scaling(removed_unit)
try:
logger.info("updating the heat template including new units")
self.heat_client.update(stack_id=self.topology.ext_id, template=template)
self.wait_until_final_state()
logger.info("wait until final state function executed")
if self.topology.state not in ["DEPLOYED", "UPDATED"]:
logger.error(
"ERROR: Something went wrong. Seems to be an error. Topology state -> %s"
% self.topology.state
)
self.lock.release()
return
except:
self.is_stopped = True
self.lock.release()
logger.info("entering provisioning phase")
if action.scaling_adjustment > 0:
logger.info("provisioning new unit after scaling out operation")
# adding relations between newly added unit and existing units from dependent services
self.configure_new_unit(new_unit)
logger.info("Sleeping (cooldown) for %s seconds" % self.policy.action.cooldown)
time.sleep(self.policy.action.cooldown)
logger.debug("Release Policy lock from %s" % self.policy.name)
self.lock.release()
logger.info("Sleeping (evaluation period) for %s seconds" % self.policy.period)
time.sleep(self.policy.period)
def configure_new_unit(self, unit):
logging.info("configuring new unit with hostname %s" % unit.hostname)
config = {}
config["hostname"] = unit.hostname
config["ips"] = unit.ips
config["zabbix_ip"] = os.environ["ZABBIX_IP"]
config["floating_ips"] = unit.floating_ips
config["hostname"] = unit.hostname
try:
logging.info("sending requests to the adapter %s with config" % config)
self.service_instance.adapter_instance.preinit(config)
self.service_instance.adapter_instance.install(config)
except Exception, e:
logging.error("error while configuring vnf %s" % e)
self.add_relations_after_scaling(config, unit)
try:
self.service_instance.adapter_instance.pre_start(config)
self.service_instance.adapter_instance.start(config)
except Exception, e:
logging.error("error while configuring vnf %s" % e)