heat/heat/engine/resources.py

400 lines
14 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import logging
import os
import time
import base64
import string
from novaclient.v1_1 import client
from heat.db import api as db_api
logger = logging.getLogger('heat.engine.resources')
class Resource(object):
CREATE_IN_PROGRESS = 'CREATE_IN_PROGRESS'
CREATE_FAILED = 'CREATE_FAILED'
CREATE_COMPLETE = 'CREATE_COMPLETE'
DELETE_IN_PROGRESS = 'DELETE_IN_PROGRESS'
DELETE_FAILED = 'DELETE_FAILED'
DELETE_COMPLETE = 'DELETE_COMPLETE'
UPDATE_IN_PROGRESS = 'UPDATE_IN_PROGRESS'
UPDATE_FAILED = 'UPDATE_FAILED'
UPDATE_COMPLETE = 'UPDATE_COMPLETE'
def __init__(self, name, json_snippet, stack):
self.t = json_snippet
self.depends_on = []
self.references = []
self.references_resolved = False
self.state = None
self.stack = stack
self.name = name
self.instance_id = None
self._nova = None
if not self.t.has_key('Properties'):
# make a dummy entry to prevent having to check all over the
# place for it.
self.t['Properties'] = {}
stack.resolve_static_refs(self.t)
stack.resolve_find_in_map(self.t)
def nova(self):
if self._nova:
return self._nova
username = self.stack.creds['username']
password = self.stack.creds['password']
tenant = self.stack.creds['tenant']
auth_url = self.stack.creds['auth_url']
self._nova = client.Client(username, password, tenant, auth_url,
service_type='compute', service_name='nova')
return self._nova
def start(self):
for c in self.depends_on:
#print '%s->%s.start()' % (self.name, self.stack.resources[c].name)
self.stack.resources[c].start()
self.stack.resolve_attributes(self.t)
self.stack.resolve_joins(self.t)
self.stack.resolve_base64(self.t)
def state_set(self, new_state, reason="state changed"):
if new_state != self.state:
ev = {}
ev['logical_resource_id'] = self.name
ev['physical_resource_id'] = self.name
ev['stack_id'] = self.stack.id
ev['stack_name'] = self.stack.name
ev['resource_status'] = new_state
ev['resource_status_reason'] = reason
ev['resource_type'] = self.t['Type']
ev['resource_properties'] = self.t['Properties']
new_stack = db_api.stack_create(None, ev)
ev['stack_id'] = new_stack.id
db_api.event_create(None, ev)
self.state = new_state
def stop(self):
pass
def reload(self):
pass
def FnGetRefId(self):
'''
http://docs.amazonwebservices.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-ref.html
'''
if self.instance_id != None:
return unicode(self.instance_id)
else:
return unicode(self.name)
def FnGetAtt(self, key):
'''
http://docs.amazonwebservices.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-getatt.html
'''
print '%s.GetAtt(%s)' % (self.name, key)
return unicode('not-this-surely')
def FnBase64(self, data):
'''
http://docs.amazonwebservices.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-base64.html
'''
return base64.b64encode(data)
class GenericResource(Resource):
def __init__(self, name, json_snippet, stack):
super(GenericResource, self).__init__(name, json_snippet, stack)
def start(self):
if self.state != None:
return
self.state_set(self.CREATE_IN_PROGRESS)
super(GenericResource, self).start()
print 'Starting GenericResource %s' % self.name
class ElasticIp(Resource):
def __init__(self, name, json_snippet, stack):
super(ElasticIp, self).__init__(name, json_snippet, stack)
self.instance_id = ''
if self.t.has_key('Properties') and self.t['Properties'].has_key('Domain'):
logger.warn('*** can\'t support Domain %s yet' % (self.t['Properties']['Domain']))
def start(self):
if self.state != None:
return
self.state_set(self.CREATE_IN_PROGRESS)
super(ElasticIp, self).start()
self.instance_id = 'eip-000003'
def FnGetRefId(self):
return unicode('0.0.0.0')
def FnGetAtt(self, key):
return unicode(self.instance_id)
class ElasticIpAssociation(Resource):
def __init__(self, name, json_snippet, stack):
super(ElasticIpAssociation, self).__init__(name, json_snippet, stack)
# note we only support already assigned ipaddress
#
# Done with:
# nova-manage floating create 172.31.0.224/28
# euca-allocate-address
#
if not self.t['Properties'].has_key('EIP'):
logger.warn('*** can\'t support this yet')
if self.t['Properties'].has_key('AllocationId'):
logger.warn('*** can\'t support AllocationId %s yet' % (self.t['Properties']['AllocationId']))
def FnGetRefId(self):
if not self.t['Properties'].has_key('EIP'):
return unicode('0.0.0.0')
else:
return unicode(self.t['Properties']['EIP'])
def start(self):
if self.state != None:
return
self.state_set(self.CREATE_IN_PROGRESS)
super(ElasticIpAssociation, self).start()
logger.info('$ euca-associate-address -i %s %s' % (self.t['Properties']['InstanceId'],
self.t['Properties']['EIP']))
class Volume(Resource):
def __init__(self, name, json_snippet, stack):
super(Volume, self).__init__(name, json_snippet, stack)
def start(self):
if self.state != None:
return
self.state_set(self.CREATE_IN_PROGRESS)
super(Volume, self).start()
vol = self.nova().volumes.create(self.t['Properties']['Size'],
display_name=self.name,
display_description=self.name)
self.instance_id = vol.id
def stop(self):
if self.state == self.DELETE_IN_PROGRESS or self.state == self.DELETE_COMPLETE:
return
self.state_set(self.DELETE_IN_PROGRESS)
Resource.stop(self)
if self.instance_id != None:
self.nova().volumes.delete(self.instance_id)
self.state_set(self.DELETE_COMPLETE)
class VolumeAttachment(Resource):
def __init__(self, name, json_snippet, stack):
super(VolumeAttachment, self).__init__(name, json_snippet, stack)
def start(self):
if self.state != None:
return
self.state_set(self.CREATE_IN_PROGRESS)
super(VolumeAttachment, self).start()
att = self.nova().volumes.create_server_volume(self.t['Properties']['InstanceId'],
self.t['Properties']['VolumeId'],
self.t['Properties']['Device'])
self.instance_id = att.id
self.state_set(self.CREATE_COMPLETE)
def stop(self):
if self.state == self.DELETE_IN_PROGRESS or self.state == self.DELETE_COMPLETE:
return
self.state_set(self.DELETE_IN_PROGRESS)
Resource.stop(self)
if self.instance_id == None:
self.nova().volumes.delete_server_volume(self.t['Properties']['InstanceId'],
self.instance_id)
self.state_set(self.DELETE_COMPLETE)
class Instance(Resource):
def __init__(self, name, json_snippet, stack):
super(Instance, self).__init__(name, json_snippet, stack)
self.ipaddress = '0.0.0.0'
if not self.t['Properties'].has_key('AvailabilityZone'):
self.t['Properties']['AvailabilityZone'] = 'nova'
self.itype_oflavor = {'t1.micro': 'm1.tiny',
'm1.small': 'm1.small',
'm1.medium': 'm1.medium',
'm1.large': 'm1.large',
'm1.xlarge': 'm1.tiny', # TODO(sdake)
'm2.xlarge': 'm1.xlarge',
'm2.2xlarge': 'm1.large',
'm2.4xlarge': 'm1.large',
'c1.medium': 'm1.medium',
'c1.4xlarge': 'm1.large',
'cc2.8xlarge': 'm1.large',
'cg1.4xlarge': 'm1.large'}
def FnGetAtt(self, key):
res = 'not-this-surely'
if key == 'AvailabilityZone':
res = self.t['Properties']['AvailabilityZone']
elif key == 'PublicIp':
res = self.ipaddress
else:
logger.warn('%s.GetAtt(%s) is not handled' % (self.name, key))
# TODO(asalkeld) PrivateDnsName, PublicDnsName & PrivateIp
return unicode(res)
def start(self):
def _null_callback(p, n, out):
"""
Method to silence the default M2Crypto.RSA.gen_key output.
"""
pass
if self.state != None:
return
self.state_set(self.CREATE_IN_PROGRESS)
Resource.start(self)
props = self.t['Properties']
if not props.has_key('KeyName'):
props['KeyName'] = 'default-key-name'
if not props.has_key('InstanceType'):
props['InstanceType'] = 's1.large'
if not props.has_key('ImageId'):
props['ImageId'] = 'F16-x86_64'
for p in props:
if p == 'UserData':
new_script = []
script_lines = props[p].split('\n')
for l in script_lines:
if '#!/' in l:
new_script.append(l)
self.insert_package_and_services(self.t, new_script)
else:
new_script.append(l)
userdata = '\n'.join(new_script)
try:
con = self.t['Metadata']["AWS::CloudFormation::Init"]['config']
for st in con['services']:
for s in con['services'][st]:
print 'service start %s_%s' % (self.name, s)
except KeyError as e:
# if there is no config then no services.
pass
# TODO(sdake)
# heat API should take care of these conversions and feed them into
# heat engine in an openstack specific json format
flavor = self.itype_oflavor[self.t['Properties']['InstanceType']]
distro_name = self.stack.parameter_get('LinuxDistribution')
key_name = self.t['Properties']['KeyName']
image_name = self.t['Properties']['ImageId']
image_list = self.nova().images.list()
for o in image_list:
if o.name == image_name:
image_id = o.id
flavor_list = self.nova().flavors.list()
for o in flavor_list:
if o.name == flavor:
flavor_id = o.id
server = self.nova().servers.create(name=self.name, image=image_id,
flavor=flavor_id, key_name=key_name,
userdata=self.FnBase64(userdata))
while server.status == 'BUILD':
server.get()
time.sleep(0.1)
if server.status == 'ACTIVE':
self.state_set(self.CREATE_COMPLETE)
self.instance_id = server.id
# just record the first ipaddress
for n in server.networks:
self.ipaddress = server.networks[n][0]
break
else:
self.state_set(self.CREATE_FAILED)
def stop(self):
if self.state == self.DELETE_IN_PROGRESS or self.state == self.DELETE_COMPLETE:
return
self.state_set(self.DELETE_IN_PROGRESS)
Resource.stop(self)
if self.instance_id == None:
self.state_set(self.DELETE_COMPLETE)
return
server = self.nova().servers.get(self.instance_id)
server.delete()
self.instance_id = None
self.state_set(self.DELETE_COMPLETE)
def insert_package_and_services(self, r, new_script):
try:
con = r['Metadata']["AWS::CloudFormation::Init"]['config']
except KeyError as e:
return
if con.has_key('packages'):
for pt in con['packages']:
if pt == 'yum':
for p in con['packages']['yum']:
new_script.append('yum install -y %s' % p)
if con.has_key('services'):
for st in con['services']:
if st == 'systemd':
for s in con['services']['systemd']:
v = con['services']['systemd'][s]
if v['enabled'] == 'true':
new_script.append('systemctl enable %s.service' % s)
if v['ensureRunning'] == 'true':
new_script.append('systemctl start %s.service' % s)
elif st == 'sysvinit':
for s in con['services']['sysvinit']:
v = con['services']['sysvinit'][s]
if v['enabled'] == 'true':
new_script.append('chkconfig %s on' % s)
if v['ensureRunning'] == 'true':
new_script.append('/etc/init.d/start %s' % s)