def bill_start_events(self, client, log_server):
start_billing_query = SearchQuery(
search_range=self.sr,
query='phase_event:done AND so_phase:provision')
try:
start_results = log_server.search(start_billing_query)
LOG.debug('Number of start billing events found: ' +
str(len(start_results.messages)))
for start_event in start_results.messages:
rcb_message = {}
start_message = json.loads(start_event.message)
rcb_message['service_type'] = start_message.get(
'sm_name', 'none')
rcb_message['instance_id'] = start_message.get('so_id', 'none')
rcb_message['tenant_id'] = start_message.get(
'tenant', 'mcntub')
rcb_message['status'] = 'start'
LOG.debug('Sending start billing event to RCB: ' +
rcb_message.__repr__())
promise = client.basic_publish(exchange='mcn',
routing_key='events',
body=json.dumps(rcb_message))
client.wait(promise)
except Exception as e:
LOG.error(
'Cannot issue query to the log service to extract start events.'
)
raise e
def setup_connections(self, amqp_url):
LOG.debug('Setting up graylog API...')
attempts = 20
log_server = GraylogAPI(self.logserver_url, self.logserver_port, self.logserver_user, self.logserver_pass)
client = puka.Client(amqp_url)
try:
time.sleep(15) # let the system settle :-)
LOG.debug('AMQP connection to: ' + amqp_url)
promise = client.connect()
client.wait(promise)
except:
LOG.error('Cannot connect to the RCB message bus.')
while attempts > 0:
LOG.debug('Sleeping for 10 secs')
time.sleep(10)
LOG.debug('AMQP connection to: ' + amqp_url)
promise = client.connect()
client.wait(promise)
attempts = attempts - 1
else:
client.close()
LOG.error('Giving up attempting to connect to the AMQP bus after number of attempts: ' + str(attempts))
raise RuntimeError('Giving up attempting to connect to the AMQP bus after number of attempts: ' + str(attempts))
self.setup_amqp(amqp_url, client)
return client, log_server
def setup_connections(self, amqp_url):
LOG.debug('Setting up graylog API...')
attempts = 20
log_server = GraylogAPI(self.logserver_url, self.logserver_port,
self.logserver_user, self.logserver_pass)
client = puka.Client(amqp_url)
try:
time.sleep(15) # let the system settle :-)
LOG.debug('AMQP connection to: ' + amqp_url)
promise = client.connect()
client.wait(promise)
except:
LOG.error('Cannot connect to the RCB message bus.')
while attempts > 0:
LOG.debug('Sleeping for 10 secs')
time.sleep(10)
LOG.debug('AMQP connection to: ' + amqp_url)
promise = client.connect()
client.wait(promise)
attempts = attempts - 1
else:
client.close()
LOG.error(
'Giving up attempting to connect to the AMQP bus after number of attempts: '
+ str(attempts))
raise RuntimeError(
'Giving up attempting to connect to the AMQP bus after number of attempts: '
+ str(attempts))
self.setup_amqp(amqp_url, client)
return client, log_server
def run(self):
"""
This logic does not need to run with the RCB SO and can be ran elsewhere
Decision part implementation goes here.
require the logging service
hardcode to log.cloudcomplab.ch
here we poll the logging server for events
query for all services that are provision events since the start of this SO
query for all services that are destroy events since the start of this SO
construct messages to send to AMQP service
start bill event:
{
"service_type": "dnsaas",
"instance_id": "sodnsa97979879879",
"tenant_id": "mcntub"
"status": "start"
}
stop bill event:
{
"service_type": "dnsaas",
"instance_id": "sodnsa97979879879",
"tenant_id": "mcntub"
"status": "start"
}
"""
LOG.debug('Waiting for deploy and provisioning to finish')
self.event.wait()
LOG.debug('Starting runtime logic...')
_, _, stack_output = self.so_e.state()
attributes = {}
for kv in stack_output:
attributes[kv['output_key']] = kv['output_value']
amqp_url = '' # "amqp://*****:*****@messaging.demonstrator.info"
if 'mcn.endpoint.rcb.mq' in attributes:
# TODO return the username and password in the heat response
# XXX username and password is hardcoded!
amqp_url = 'amqp://*****:*****@' + attributes['mcn.endpoint.rcb.mq']
else:
LOG.error(
'mcn.endpoint.rcb.mq is not present in the stack output. amqp_url='
+ amqp_url)
raise RuntimeError(
'mcn.endpoint.rcb.mq is not present in the stack output. amqp_url='
+ amqp_url)
client, log_server = self.setup_connections(amqp_url)
while not self.destroy_event.is_set():
# TODO separate threads
LOG.debug('Executing billing run...')
self.bill_start_events(client, log_server)
self.bill_stop_events(client, log_server)
self.destroy_event.wait(self.sleepy)
LOG.debug('Runtime logic ending...')
client.close()
def run(self):
"""
This logic does not need to run with the RCB SO and can be ran elsewhere
Decision part implementation goes here.
require the logging service
hardcode to log.cloudcomplab.ch
here we poll the logging server for events
query for all services that are provision events since the start of this SO
query for all services that are destroy events since the start of this SO
construct messages to send to AMQP service
start bill event:
{
"service_type": "dnsaas",
"instance_id": "sodnsa97979879879",
"tenant_id": "mcntub"
"status": "start"
}
stop bill event:
{
"service_type": "dnsaas",
"instance_id": "sodnsa97979879879",
"tenant_id": "mcntub"
"status": "start"
}
"""
LOG.debug('Waiting for deploy and provisioning to finish')
self.event.wait()
LOG.debug('Starting runtime logic...')
_, _, stack_output = self.so_e.state()
attributes = {}
for kv in stack_output:
attributes[kv['output_key']] = kv['output_value']
amqp_url = '' # "amqp://*****:*****@messaging.demonstrator.info"
if 'mcn.endpoint.rcb.mq' in attributes:
# TODO return the username and password in the heat response
# XXX username and password is hardcoded!
amqp_url = 'amqp://*****:*****@' + attributes['mcn.endpoint.rcb.mq']
else:
LOG.error('mcn.endpoint.rcb.mq is not present in the stack output. amqp_url=' + amqp_url)
raise RuntimeError('mcn.endpoint.rcb.mq is not present in the stack output. amqp_url=' + amqp_url)
client, log_server = self.setup_connections(amqp_url)
while not self.destroy_event.is_set():
# TODO separate threads
LOG.debug('Executing billing run...')
self.bill_start_events(client, log_server)
self.bill_stop_events(client, log_server)
self.destroy_event.wait(self.sleepy)
LOG.debug('Runtime logic ending...')
client.close()
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 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 update(self, topology):
if self.runtime_agent:
self.runtime_agent.stop(topology.id)
LOG.debug("Start Updating 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.update(stack_id=topology.ext_id, template=_template)
LOG.debug("stack details after update: %s" % stack_details)
LOG.debug("stack id: %s" % topology.ext_id)
except Exception, msg:
LOG.error(msg)
topology.state = 'ERROR'
topology.ext_id = None
return topology
def update(self, topology):
if self.runtime_agent:
self.runtime_agent.stop(topology.id)
LOG.debug("Start Updating 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.update(stack_id=topology.ext_id,
template=_template)
LOG.debug("stack details after update: %s" % stack_details)
LOG.debug("stack id: %s" % topology.ext_id)
except Exception, msg:
LOG.error(msg)
topology.state = 'ERROR'
topology.ext_id = None
return topology
def bill_start_events(self, client, log_server):
start_billing_query = SearchQuery(search_range=self.sr, query='phase_event:done AND so_phase:provision')
try:
start_results = log_server.search(start_billing_query)
LOG.debug('Number of start billing events found: ' + str(len(start_results.messages)))
for start_event in start_results.messages:
rcb_message = {}
start_message = json.loads(start_event.message)
rcb_message['service_type'] = start_message.get('sm_name', 'none')
rcb_message['instance_id'] = start_message.get('so_id', 'none')
rcb_message['tenant_id'] = start_message.get('tenant', 'mcntub')
rcb_message['status'] = 'start'
LOG.debug('Sending start billing event to RCB: ' + rcb_message.__repr__())
promise = client.basic_publish(exchange='mcn', routing_key='events', body=json.dumps(rcb_message))
client.wait(promise)
except Exception as e:
LOG.error('Cannot issue query to the log service to extract start events.')
raise e
def run(self):
LOG.debug("Starting new thread")
i = 0
while i < 18:
for service_instance in self.topology.service_instances:
for unit in service_instance.units:
if i == 0:
unit.state = 'Initialised'
else:
unit.state = 'Started'
dbm_name = SysUtil().get_sys_conf()['database_manager']
db = FactoryAgent.get_agent(dbm_name)
db.update(unit)
# conf = SysUtil().get_sys_conf().props
# runtime_agent = FactoryAgent().get_agent(conf['runtime_agent'])
# runtime_agent.run(self.topology)
if i > 1:
return
time.sleep(2)
i += 1
LOG.error("Can't get info on the units after 180 seconds, is there a problem?")
def deploy(self, attributes):
"""
Deploy method
"""
if self.stack_id is not None:
pass
parameters = {}
# defining the location of the topology
if 'maas.location' in attributes:
self.location = parameters['location'] = os.environ[
'location'] = attributes['maas.location']
LOG.debug("location %s passed via OCCI Attribute" % self.location)
self.deployer = FactoryAgent().get_agent(self.conf['deployer'])
self.topology_type = topology_mapping[self.location]
LOG.info("deploying template %s" % (self.topology_type, ))
# read template...
f = open(os.path.join(SO_DIR, 'data/topologies', self.topology_type))
template = f.read()
f.close()
LOG.debug("content of the topology %s" % template)
# extracting hot template
try:
config = yaml.load(template)
LOG.debug(config)
except yaml.YAMLError, exc:
if hasattr(exc, 'problem_mark'):
mark = exc.problem_mark
LOG.error("Error in configuration file:", exc)
LOG.error("Error position: (%s:%s)" %
(mark.line + 1, mark.column + 1))
else:
LOG.error("Error in configuration file:", exc)
def deploy(self, attributes):
"""
Deploy method
"""
if self.stack_id is not None:
pass
parameters = {}
# defining the location of the topology
if 'maas.location' in attributes:
self.location = parameters['location'] = os.environ['location'] = attributes['maas.location']
LOG.debug("location %s passed via OCCI Attribute"%self.location)
self.deployer = FactoryAgent().get_agent(self.conf['deployer'])
self.topology_type = topology_mapping[self.location]
LOG.info("deploying template %s" % (self.topology_type,))
# read template...
f = open(os.path.join(SO_DIR, 'data/topologies', self.topology_type))
template = f.read()
f.close()
LOG.debug("content of the topology %s" % template)
# extracting hot template
try:
config = yaml.load(template)
LOG.debug(config)
except yaml.YAMLError, exc:
if hasattr(exc, 'problem_mark'):
mark = exc.problem_mark
LOG.error("Error in configuration file:", exc)
LOG.error("Error position: (%s:%s)" % (mark.line + 1, mark.column + 1))
else:
LOG.error("Error in configuration file:", exc)
def dispose(self, topology):
# checker_thread = self.checker_thread
# LOG.debug("Get RuntimeAgent for topology %s" % topology.id)
# runtime_agent = self.runtime_agents.get(topology.id)
#LOG.debug("Got RuntimeAgent: %s" % self.runtime_agent)
stack_details = None
topology.state = 'DELETING'
self.db.update(topology)
if self.runtime_agent:
self.runtime_agent.stop(topology.id)
try:
stack_details = self.heatclient.delete(topology.ext_id)
except HTTPNotFound, exc:
exc.message = 'Topology \"%s\" was not found on OpenStack anymore. (%s)' % (topology.name, exc.message)
topology.state = 'DELETED'
topology.detailed_state = exc.message
self.db.update(topology)
LOG.error(exc.message)
raise exc
except Exception, msg:
LOG.error(msg)
topology.state = 'ERROR'
def deploy(self, topology):
LOG.debug("Start Deploying")
name = topology.name
template = self.template_manager.get_template(topology)
LOG.debug("stack name: %s" % name)
LOG.debug("template: %s" % template)
try:
# stack_id = stack_details['stack']['id']
stack_details = StackDetails()
stack_details.id = 'dummy-id'
"""
filling the topology with real values
"""
# res = self.heatclient.list_resources(stack_id)
for service_instance in topology.service_instances:
for unit in service_instance.units:
unit.ext_id = unit.id
topology.ext_id = 1
LOG.debug("stack id: dummy-id")
except KeyError, exc:
LOG.error(KeyError)
LOG.error(exc)
stack_id = "None"
def dispose(self, topology):
# checker_thread = self.checker_thread
# LOG.debug("Get RuntimeAgent for topology %s" % topology.id)
# runtime_agent = self.runtime_agents.get(topology.id)
#LOG.debug("Got RuntimeAgent: %s" % self.runtime_agent)
stack_details = None
topology.state = 'DELETING'
self.db.update(topology)
if self.runtime_agent:
self.runtime_agent.stop(topology.id)
try:
stack_details = self.heatclient.delete(topology.ext_id)
except HTTPNotFound, exc:
exc.message = 'Topology \"%s\" was not found on OpenStack anymore. (%s)' % (
topology.name, exc.message)
topology.state = 'DELETED'
topology.detailed_state = exc.message
self.db.update(topology)
LOG.error(exc.message)
raise exc
except Exception, msg:
LOG.error(msg)
topology.state = 'ERROR'
def update(self, old, new, extras):
if self.stack_id is not None:
f = open(os.path.join(BUNDLE_DIR, 'data', 'update.yaml'))
template = f.read()
f.close()
# XXX the attribute mcn.endpoint.mme-pgwc-sgwc must be present, otherwise fail
try:
mme = new.attributes['mme-pgwc-sgwc_public_ip']
except KeyError:
LOG.error('The update method to the service instance was called but a required parameter was not found.')
LOG.error('mme-pgwc-sgwc_public_ip must be supplied as an X-OCCI-Attribute header.')
LOG.error('Doing nothing...')
raise RuntimeError('mme-pgwc-sgwc_public_ip must be supplied as an X-OCCI-Attribute header.')
self.deployer.update(self.stack_id, template, self.token, parameters={'mme_pgwc_sgwc_input':mme})
LOG.info('Updated stack ID: ' + self.stack_id.__repr__())
def start_policy_checker_si(self):
LOG.debug("Start active_policy check for policy %s on service instance %s" % (
self.policy.name, self.service_instance.name))
while not self.is_stopped:
LOG.debug("Locking policy checking from %s" % self.policy.name)
self.lock.acquire()
LOG.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'):
LOG.warning(
'Check upscaling - Maximum number of unit exceeded for service instance: %s' % self.service_instance.name)
LOG.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'):
LOG.warning(
'Check downscaling - Minimum number of unit exceeded for service instance: %s' % self.service_instance.name)
LOG.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():
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 = '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:
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):
removed_unit = self.remove_unit(self.topology, self.service_instance)
self.db.remove(removed_unit)
else:
LOG.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)
# LOG.debug("Send update to heat template with: \n%s" % template)
try:
self.heat_client.update(stack_id=self.topology.ext_id, template=template)
self.wait_until_final_state()
if not self.topology.state == 'DEPLOYED':
LOG.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()
LOG.info('Sleeping (cooldown) for %s seconds' % self.policy.action.cooldown)
time.sleep(self.policy.action.cooldown)
LOG.debug("Release Policy lock from %s" % self.policy.name)
self.lock.release()
LOG.info('Sleeping (evaluation period) for %s seconds' % self.policy.period)
time.sleep(self.policy.period)
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)
except yaml.YAMLError, exc:
if hasattr(exc, 'problem_mark'):
mark = exc.problem_mark
LOG.error("Error in configuration file:", exc)
LOG.error("Error position: (%s:%s)" % (mark.line + 1, mark.column + 1))
else:
LOG.error("Error in configuration file:", exc)
# creating the topology object
try:
topology = TopologyOrchestrator.create(config)
except NotFoundException, msg:
LOG.error(msg)
return
except NotUniqueException, msg:
LOG.error(msg)
return
except NotDefinedException, msg:
LOG.error(msg)
return
except InvalidInputException, msg:
LOG.error(msg)
return
except TypeErrorException, msg:
LOG.error(msg)
return
except Exception, msg:
LOG.error(msg)
return
# deploying the topology
if hasattr(exc, 'problem_mark'):
mark = exc.problem_mark
LOG.error("Error in configuration file:", exc)
LOG.error("Error position: (%s:%s)" %
(mark.line + 1, mark.column + 1))
else:
LOG.error("Error in configuration file:", exc)
# creating the topology object
try:
topology = TopologyOrchestrator.create(config)
except NotFoundException, msg:
LOG.error(msg)
return
except NotUniqueException, msg:
LOG.error(msg)
return
except NotDefinedException, msg:
LOG.error(msg)
return
except InvalidInputException, msg:
LOG.error(msg)
return
except TypeErrorException, msg:
LOG.error(msg)
return
except Exception, msg:
LOG.error(msg)
return
# deploying the topology
topology.state = 'ERROR'
topology.ext_id = None
raise
else:
LOG.debug("Restart topology %s" % topology.name)
#check that the topology is still valid
try:
self.checker.check(topology=topology)
print "finish check"
except Exception, exc:
exc.message = 'Topology \"%s\" is not valid anymore. (%s)' % (
topology.name, exc.message)
topology.state = 'ERROR'
topology.detailed_state = exc.message
self.db.update(topology)
LOG.error(exc.message)
raise exc
#check that the topology already exists on OpenStack
try:
stack_details = self.heatclient.show(topology.ext_id)
except HTTPNotFound, exc:
exc.message = 'Topology \"%s\" was not found on OpenStack anymore. (%s)' % (
topology.name, exc.message)
topology.state = 'DELETED'
topology.detailed_state = exc.message
self.db.update(topology)
LOG.error(exc.message)
raise exc
LOG.debug("Starting RuntimeAgent for topology %s." % topology.id)
self.runtime_agent.start(topology)
#self.register_agent.start()
class SoExecution(service_orchestrator.Execution):
"""
class docs
"""
def __init__(self, token, tenant_name):
"""
Constructor
"""
super(SoExecution, self).__init__(token, tenant_name)
# by default
self.topology_type = "topology-maas-bern.json"
self.token = token
self.tenant_name = tenant_name
self.stack_id = None
self.maas = None
self.location = 'bern'
# make sure we can talk to deployer...
LOG.debug("sending request to the url %s" % os.environ['DESIGN_URI'])
self.conf = sys_util().get_sys_conf()
LOG.debug("instantiating deployer %s" % self.conf['deployer'])
self.deployer = None
def deploy(self, attributes):
"""
Deploy method
"""
if self.stack_id is not None:
pass
parameters = {}
# defining the location of the topology
if 'maas.location' in attributes:
self.location = parameters['location'] = os.environ[
'location'] = attributes['maas.location']
LOG.debug("location %s passed via OCCI Attribute" % self.location)
self.deployer = FactoryAgent().get_agent(self.conf['deployer'])
self.topology_type = topology_mapping[self.location]
LOG.info("deploying template %s" % (self.topology_type, ))
# read template...
f = open(os.path.join(SO_DIR, 'data/topologies', self.topology_type))
template = f.read()
f.close()
LOG.debug("content of the topology %s" % template)
# extracting hot template
try:
config = yaml.load(template)
LOG.debug(config)
except yaml.YAMLError, exc:
if hasattr(exc, 'problem_mark'):
mark = exc.problem_mark
LOG.error("Error in configuration file:", exc)
LOG.error("Error position: (%s:%s)" %
(mark.line + 1, mark.column + 1))
else:
LOG.error("Error in configuration file:", exc)
# creating the topology object
try:
topology = TopologyOrchestrator.create(config)
except NotFoundException, msg:
LOG.error(msg)
return
LOG.exception(exc)
topology.state = 'ERROR'
topology.ext_id = None
raise
else:
LOG.debug("Restart topology %s" % topology.name)
#check that the topology is still valid
try:
self.checker.check(topology=topology)
print "finish check"
except Exception, exc:
exc.message = 'Topology \"%s\" is not valid anymore. (%s)' % (topology.name, exc.message)
topology.state = 'ERROR'
topology.detailed_state = exc.message
self.db.update(topology)
LOG.error(exc.message)
raise exc
#check that the topology already exists on OpenStack
try:
stack_details = self.heatclient.show(topology.ext_id)
except HTTPNotFound, exc:
exc.message = 'Topology \"%s\" was not found on OpenStack anymore. (%s)' % (topology.name, exc.message)
topology.state = 'DELETED'
topology.detailed_state = exc.message
self.db.update(topology)
LOG.error(exc.message)
raise exc
LOG.debug("Starting RuntimeAgent for topology %s." % topology.id)
self.runtime_agent.start(topology)
#self.register_agent.start()
return topology
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)
def start_policy_checker_si(self):
LOG.debug(
"Start active_policy check for policy %s on service instance %s" %
(self.policy.name, self.service_instance.name))
while not self.is_stopped:
LOG.debug("Locking policy checking from %s" % self.policy.name)
self.lock.acquire()
LOG.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'):
LOG.warning(
'Check upscaling - Maximum number of unit exceeded for service instance: %s'
% self.service_instance.name)
LOG.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'):
LOG.warning(
'Check downscaling - Minimum number of unit exceeded for service instance: %s'
% self.service_instance.name)
LOG.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(
):
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 = '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:
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):
removed_unit = self.remove_unit(
self.topology, self.service_instance)
self.db.remove(removed_unit)
else:
LOG.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)
# LOG.debug("Send update to heat template with: \n%s" % template)
try:
self.heat_client.update(stack_id=self.topology.ext_id,
template=template)
self.wait_until_final_state()
if not self.topology.state == 'DEPLOYED':
LOG.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()
LOG.info('Sleeping (cooldown) for %s seconds' %
self.policy.action.cooldown)
time.sleep(self.policy.action.cooldown)
LOG.debug("Release Policy lock from %s" % self.policy.name)
self.lock.release()
LOG.info('Sleeping (evaluation period) for %s seconds' %
self.policy.period)
time.sleep(self.policy.period)
