class BotoScaleInterface(ScaleInterface):
conn = None
saveclcdata = False
def __init__(self, clc_host, access_id, secret_key, token):
self.access_id = access_id
self.secret_key = secret_key
self.token = token
self.set_endpoint(clc_host)
def set_endpoint(self, endpoint):
#boto.set_stream_logger('scale')
path = '/services/AutoScaling'
reg = RegionInfo(name='eucalyptus', endpoint=endpoint)
port = 8773
if endpoint[len(endpoint)-13:] == 'amazonaws.com':
endpoint = endpoint.replace('ec2', 'autoscaling', 1)
path = '/'
reg = RegionInfo(endpoint=endpoint)
port = 443
self.conn = AutoScaleConnection(self.access_id, self.secret_key, region=reg,
port=port, path=path,
is_secure=True, security_token=self.token, debug=0)
self.conn.APIVersion = '2011-01-01'
if not(endpoint[len(endpoint)-13:] == 'amazonaws.com'):
self.conn.auth_region_name = 'Eucalyptus'
self.conn.https_validate_certificates = False
self.conn.http_connection_kwargs['timeout'] = 30
def __save_json__(self, obj, name):
f = open(name, 'w')
json.dump(obj, f, cls=BotoJsonScaleEncoder, indent=2)
f.close()
##
# autoscaling methods
##
def create_auto_scaling_group(self, as_group):
return self.conn.create_auto_scaling_group(as_group)
def delete_auto_scaling_group(self, name, force_delete=False):
return self.conn.delete_auto_scaling_group(name, force_delete)
def get_all_groups(self, names=None, max_records=None, next_token=None):
obj = self.conn.get_all_groups(names, max_records, next_token)
if self.saveclcdata:
self.__save_json__(obj, "mockdata/AS_Groups.json")
return obj
def get_all_autoscaling_instances(self, instance_ids=None, max_records=None, next_token=None):
obj = self.conn.get_all_autoscaling_instances(instance_ids, max_records, next_token)
if self.saveclcdata:
self.__save_json__(obj, "mockdata/AS_Instances.json")
return obj
def set_desired_capacity(self, group_name, desired_capacity, honor_cooldown=False):
group = self.conn.get_all_groups([group_name])[0];
# notice, honor_cooldown not supported.
return group.set_capacity(desired_capacity)
def set_instance_health(self, instance_id, health_status, should_respect_grace_period=True):
return self.conn.set_instance_health(instance_id, health_status,
should_respect_grace_period)
def terminate_instance(self, instance_id, decrement_capacity=True):
return self.conn.terminate_instance(instance_id, decrement_capacity)
def update_autoscaling_group(self, as_group):
as_group.connection = self.conn
return as_group.update()
def create_launch_configuration(self, launch_config):
return self.conn.create_launch_configuration(launch_config)
def delete_launch_configuration(self, launch_config_name):
return self.conn.delete_launch_configuration(launch_config_name)
def get_all_launch_configurations(self, config_names=None, max_records=None, next_token=None):
obj = self.conn.get_all_launch_configurations(names=config_names, max_records=max_records,
next_token=next_token)
if self.saveclcdata:
self.__save_json__(obj, "mockdata/AS_LaunchConfigs.json")
return obj
# policy related
def delete_policy(self, policy_name, autoscale_group=None):
return self.conn.delete_policy(policy_name, autoscale_group)
def get_all_policies(self, as_group=None, policy_names=None, max_records=None, next_token=None):
obj = self.conn.get_all_policies(as_group, policy_names, max_records, next_token)
if self.saveclcdata:
self.__save_json__(obj, "mockdata/AS_Policies.json")
return obj
def execute_policy(self, policy_name, as_group=None, honor_cooldown=None):
return self.conn.execute_policy(policy_name, as_group, honor_cooldown)
def create_scaling_policy(self, scaling_policy):
return self.conn.create_scaling_policy(scaling_policy)
def get_all_adjustment_types(self):
return self.conn.get_all_adjustment_types()
# tag related
def delete_tags(self, tags):
return self.conn.delete_tags(tags)
def get_all_tags(self, filters=None, max_records=None, next_token=None):
obj = self.conn.get_all_tags(filters, max_records, next_token)
if self.saveclcdata:
self.__save_json__(obj, "mockdata/AS_Tags.json")
return obj
def create_or_update_tags(self, tags):
return self.conn.create_or_update_tags(tags)
class BotoScaleInterface(ScaleInterface):
conn = None
saveclcdata = False
def __init__(self, clc_host, access_id, secret_key, token):
#boto.set_stream_logger('foo')
path = '/services/AutoScaling'
reg = RegionInfo(name='eucalyptus', endpoint=clc_host)
port = 8773
if clc_host[len(clc_host) - 13:] == 'amazonaws.com':
clc_host = clc_host.replace('ec2', 'autoscaling', 1)
path = '/'
reg = None
port = 443
self.conn = AutoScaleConnection(access_id,
secret_key,
region=reg,
port=port,
path=path,
is_secure=True,
security_token=token,
debug=0)
self.conn.APIVersion = '2011-01-01'
if not (clc_host[len(clc_host) - 13:] == 'amazonaws.com'):
self.conn.auth_region_name = 'Eucalyptus'
self.conn.https_validate_certificates = False
self.conn.http_connection_kwargs['timeout'] = 30
def __save_json__(self, obj, name):
f = open(name, 'w')
json.dump(obj, f, cls=BotoJsonScaleEncoder, indent=2)
f.close()
##
# autoscaling methods
##
def create_auto_scaling_group(self, as_group):
return self.conn.create_auto_scaling_group(as_group)
def delete_auto_scaling_group(self, name, force_delete=False):
return self.conn.delete_auto_scaling_group(name, force_delete)
def get_all_groups(self, names=None, max_records=None, next_token=None):
obj = self.conn.get_all_groups(names, max_records, next_token)
if self.saveclcdata:
self.__save_json__(obj, "mockdata/AS_Groups.json")
return obj
def get_all_autoscaling_instances(self,
instance_ids=None,
max_records=None,
next_token=None):
obj = self.conn.get_all_autoscaling_instances(instance_ids,
max_records, next_token)
if self.saveclcdata:
self.__save_json__(obj, "mockdata/AS_Instances.json")
return obj
def set_desired_capacity(self,
group_name,
desired_capacity,
honor_cooldown=False):
group = self.conn.get_all_groups([group_name])[0]
# notice, honor_cooldown not supported.
return group.set_capacity(desired_capacity)
def set_instance_health(self,
instance_id,
health_status,
should_respect_grace_period=True):
return self.conn.set_instance_health(instance_id, health_status,
should_respect_grace_period)
def terminate_instance(self, instance_id, decrement_capacity=True):
return self.conn.terminate_instance(instance_id, decrement_capacity)
def update_autoscaling_group(self, as_group):
as_group.connection = self.conn
return as_group.update()
def create_launch_configuration(self, launch_config):
return self.conn.create_launch_configuration(launch_config)
def delete_launch_configuration(self, launch_config_name):
return self.conn.delete_launch_configuration(launch_config_name)
def get_all_launch_configurations(self,
config_names=None,
max_records=None,
next_token=None):
obj = self.conn.get_all_launch_configurations(names=config_names,
max_records=max_records,
next_token=next_token)
if self.saveclcdata:
self.__save_json__(obj, "mockdata/AS_LaunchConfigs.json")
return obj
# policy related
def delete_policy(self, policy_name, autoscale_group=None):
return self.conn.delete_policy(policy_name, autoscale_group)
def get_all_policies(self,
as_group=None,
policy_names=None,
max_records=None,
next_token=None):
return self.conn.get_all_policies(as_group, policy_names, max_records,
next_token)
def execute_policy(self, policy_name, as_group=None, honor_cooldown=None):
return self.conn.execute_policy(policy_name, as_group, honor_cooldown)
def create_scaling_policy(self, scaling_policy):
return self.conn.create_scaling_policy(scaling_policy)
def get_all_adjustment_types(self):
return self.conn.get_all_adjustment_types()
# tag related
def delete_tags(self, tags):
return self.conn.delete_tags(tags)
def get_all_tags(self, filters=None, max_records=None, next_token=None):
return self.conn.get_all_tags(filters, max_records, next_token)
def create_or_update_tags(self, tags):
return self.conn.create_or_update_tags(tags)
def test_basic(self):
# NB: as it says on the tin these are really basic tests that only
# (lightly) exercise read-only behaviour - and that's only if you
# have any autoscale groups to introspect. It's useful, however, to
# catch simple errors
print('--- running %s tests ---' % self.__class__.__name__)
c = AutoScaleConnection()
self.assertTrue(repr(c).startswith('AutoScaleConnection'))
groups = c.get_all_groups()
for group in groups:
self.assertIsInstance(group, AutoScalingGroup)
# get activities
activities = group.get_activities()
for activity in activities:
self.assertIsInstance(activity, Activity)
# get launch configs
configs = c.get_all_launch_configurations()
for config in configs:
self.assertIsInstance(config, LaunchConfiguration)
# get policies
policies = c.get_all_policies()
for policy in policies:
self.assertIsInstance(policy, ScalingPolicy)
# get scheduled actions
actions = c.get_all_scheduled_actions()
for action in actions:
self.assertIsInstance(action, ScheduledUpdateGroupAction)
# get instances
instances = c.get_all_autoscaling_instances()
for instance in instances:
self.assertIsInstance(instance, Instance)
# get all scaling process types
ptypes = c.get_all_scaling_process_types()
for ptype in ptypes:
self.assertTrue(ptype, ProcessType)
# get adjustment types
adjustments = c.get_all_adjustment_types()
for adjustment in adjustments:
self.assertIsInstance(adjustment, AdjustmentType)
# get metrics collection types
types = c.get_all_metric_collection_types()
self.assertIsInstance(types, MetricCollectionTypes)
# create the simplest possible AutoScale group
# first create the launch configuration
time_string = '%d' % int(time.time())
lc_name = 'lc-%s' % time_string
lc = LaunchConfiguration(name=lc_name, image_id='ami-2272864b',
instance_type='t1.micro')
c.create_launch_configuration(lc)
found = False
lcs = c.get_all_launch_configurations()
for lc in lcs:
if lc.name == lc_name:
found = True
break
assert found
# now create autoscaling group
group_name = 'group-%s' % time_string
group = AutoScalingGroup(name=group_name, launch_config=lc,
availability_zones=['us-east-1a'],
min_size=1, max_size=1)
c.create_auto_scaling_group(group)
found = False
groups = c.get_all_groups()
for group in groups:
if group.name == group_name:
found = True
break
assert found
# now create a tag
tag = Tag(key='foo', value='bar', resource_id=group_name,
propagate_at_launch=True)
c.create_or_update_tags([tag])
found = False
tags = c.get_all_tags()
for tag in tags:
if tag.resource_id == group_name and tag.key == 'foo':
found = True
break
assert found
c.delete_tags([tag])
# shutdown instances and wait for them to disappear
group.shutdown_instances()
instances = True
while instances:
time.sleep(5)
groups = c.get_all_groups()
for group in groups:
if group.name == group_name:
if not group.instances:
instances = False
group.delete()
lc.delete()
found = True
while found:
found = False
time.sleep(5)
tags = c.get_all_tags()
for tag in tags:
if tag.resource_id == group_name and tag.key == 'foo':
found = True
assert not found
print('--- tests completed ---')
def create_autoscaling(ami_id, sns_arn):
"""
Creates the autoscaling group for proxy instances
Inspired by boto autoscaling tutorial.
"""
con = AutoScaleConnection(aws_secret_access_key=AWS_SECRET_ACCESS_KEY,
aws_access_key_id=AWS_ACCESS_KEY,
region=RegionInfo(name=REGION,
endpoint='autoscaling.%s.amazonaws.com' % REGION))
print "Creating autoscaling configuration.."
config = LaunchConfiguration(name=AUTOSCALING_GROUP_NAME,
image_id=ami_id,
key_name=KEY_NAME,
security_groups=[EC2_SECURITY_GROUP_NAME],
instance_type=INSTANCE_TYPE)
con.create_launch_configuration(config)
print "Create autoscaling group..."
ag = AutoScalingGroup(name=AUTOSCALING_GROUP_NAME,
launch_config=config,
availability_zones=["{0}a".format(REGION)],
load_balancers=[ELB_NAME],
min_size=AUTOSCALING_MIN_INSTANCES,
max_size=AUTOSCALING_MAX_INSTANCES,
group_name=AUTOSCALING_GROUP_NAME)
con.create_auto_scaling_group(ag)
# fetch the autoscale group after it is created (unused but may be necessary)
_ = con.get_all_groups(names=[AUTOSCALING_GROUP_NAME])[0]
# Create tag name for autoscaling-created machines
as_tag = Tag(key='Name', value=AUTOSCALING_GROUP_NAME, propagate_at_launch=True, resource_id=AUTOSCALING_GROUP_NAME)
con.create_or_update_tags([as_tag])
print "Creating autoscaling policy..."
scaleup_policy = ScalingPolicy(name='scale_up',
adjustment_type='ChangeInCapacity',
as_name=AUTOSCALING_GROUP_NAME,
scaling_adjustment=1,
cooldown=AUTOSCALING_COOLDOWN_PERIOD)
scaledown_policy = ScalingPolicy(name='scale_down',
adjustment_type='ChangeInCapacity',
as_name=AUTOSCALING_GROUP_NAME,
scaling_adjustment=-1,
cooldown=AUTOSCALING_COOLDOWN_PERIOD)
con.create_scaling_policy(scaleup_policy)
con.create_scaling_policy(scaledown_policy)
# Get freshened policy objects
scaleup_policy = con.get_all_policies(as_group=AUTOSCALING_GROUP_NAME, policy_names=['scale_up'])[0]
scaledown_policy = con.get_all_policies(as_group=AUTOSCALING_GROUP_NAME, policy_names=['scale_down'])[0]
print "Creating cloudwatch alarms"
cloudwatch_con = CloudWatchConnection(aws_secret_access_key=AWS_SECRET_ACCESS_KEY,
aws_access_key_id=AWS_ACCESS_KEY,
region=RegionInfo(name=REGION,
endpoint='monitoring.%s.amazonaws.com' % REGION))
alarm_dimensions = {"AutoScalingGroupName": AUTOSCALING_GROUP_NAME}
scaleup_alarm = MetricAlarm(name='scale_up_on_cpu',
namespace='AWS/EC2',
metric='CPUUtilization',
statistic='Average',
comparison='>',
threshold=AUTOSCALING_CPU_MAX_THRESHOLD,
period='60',
evaluation_periods=1,
alarm_actions=[scaleup_policy.policy_arn, sns_arn],
dimensions=alarm_dimensions)
# Don't send SNS on scaledown policy
scaledown_alarm = MetricAlarm(name='scale_down_on_cpu',
namespace='AWS/EC2',
metric='CPUUtilization',
statistic='Average',
comparison='<',
threshold=AUTOSCALING_CPU_MIN_THRESHOLD,
period='60',
evaluation_periods=1,
alarm_actions=[scaledown_policy.policy_arn],
dimensions=alarm_dimensions)
cloudwatch_con.create_alarm(scaleup_alarm)
cloudwatch_con.create_alarm(scaledown_alarm)
def setup(CONF):
global out
lookup_tbl = {
'name': CONF['NAME'],
}
conn = AutoScaleConnection()
out['conn'] = conn
# Launch Configurations
LC = CONF['LC']
LC['name'] = LC['name'] % lookup_tbl
lc = LaunchConfiguration(**LC)
conn.create_launch_configuration(lc)
out['lc'] = lc
# Auto Scaling Group
ASG = CONF['ASG']
ASG['group_name'] = ASG['group_name'] % lookup_tbl
ASG['launch_config'] = lc
groups = conn.get_all_groups(names=[ASG['group_name']])
if (len(groups) > 0):
# update
asg = groups[0]
for k in ASG :
# asg not iterable, try-except to make sure asg[k] exists
try: asg.__getattribute__(k)
except: continue
asg.__setattr__(k, ASG[k])
asg.launch_config_name = LC['name']
asg.update()
out['asg'] = asg
else:
#create
asg = AutoScalingGroup(**ASG)
conn.create_auto_scaling_group(asg)
# ASG Tags
ASG_TAGS = CONF['ASG_TAGS']
for i in ASG_TAGS:
if 'propagate_at_launch' not in i:
i['propagate_at_launch'] = True
i['key'] = i['key'] % lookup_tbl
i['value'] = i['value'] % lookup_tbl
tags = [
Tag(**dict(x.items() + [('resource_id', ASG['group_name'])])) for x in ASG_TAGS
]
conn.create_or_update_tags(tags)
# Triggers (Scaling Policy / Cloudwatch Alarm)
conn_cw = connect_to_region(CONF['REGION'])
TRIGGERS = CONF['TRIGGERS']
for T in TRIGGERS:
T['policy']['name'] = T['policy']['name'] % lookup_tbl
T['policy']['as_name'] = ASG['group_name']
T['alarm']['dimensions'] = {'AutoScalingGroupName': ASG['group_name']}
T['alarm']['alarm_actions'] = None
if 'name' in T['alarm']:
T['alarm']['name'] = T['alarm']['name'] % lookup_tbl
else:
T['alarm']['name'] = T['policy']['name']
# Policies are safely overwritten, so not checked for existence
conn.create_scaling_policy(ScalingPolicy(**T['policy']))
policy = conn.get_all_policies(as_group=ASG['group_name'], policy_names=[T['policy']['name']])[0]
T['alarm']['alarm_actions'] = [policy.policy_arn]
hits = conn_cw.describe_alarms(alarm_names=[T['alarm']['name']])
conn_cw.create_alarm(MetricAlarm(**T['alarm']))
