268 lines
10 KiB
Python
268 lines
10 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 eventlet
|
|
import logging
|
|
import os
|
|
import json
|
|
import sys
|
|
from email.mime.multipart import MIMEMultipart
|
|
from email.mime.text import MIMEText
|
|
from novaclient.exceptions import NotFound
|
|
|
|
import heat
|
|
from heat.engine import resources
|
|
from heat.common import exception
|
|
|
|
logger = logging.getLogger('heat.engine.instance')
|
|
|
|
|
|
class Restarter(resources.Resource):
|
|
properties_schema = {'InstanceId': {'Type': 'String',
|
|
'Required': True}}
|
|
|
|
def _find_resource(self, instance_id):
|
|
'''
|
|
Return the resource with the specified instance ID, or None if it
|
|
cannot be found.
|
|
'''
|
|
for resource in self.stack:
|
|
if resource.instance_id == instance_id:
|
|
return resource
|
|
return None
|
|
|
|
def alarm(self):
|
|
self.calculate_properties()
|
|
victim = self._find_resource(self.properties['InstanceId'])
|
|
|
|
if victim is None:
|
|
logger.info('%s Alarm, can not find instance %s' %
|
|
(self.name, self.properties['InstanceId']))
|
|
return
|
|
|
|
logger.info('%s Alarm, restarting resource: %s' %
|
|
(self.name, victim.name))
|
|
self.stack.restart_resource(victim.name)
|
|
|
|
|
|
class Instance(resources.Resource):
|
|
# AWS does not require KeyName and InstanceType but we seem to
|
|
properties_schema = {'ImageId': {'Type': 'String',
|
|
'Required': True},
|
|
'InstanceType': {'Type': 'String',
|
|
'Required': True},
|
|
'KeyName': {'Type': 'String',
|
|
'Required': True},
|
|
'AvailabilityZone': {'Type': 'String',
|
|
'Default': 'nova'},
|
|
'DisableApiTermination': {'Type': 'String',
|
|
'Implemented': False},
|
|
'KernelId': {'Type': 'String',
|
|
'Implemented': False},
|
|
'Monitoring': {'Type': 'Boolean',
|
|
'Implemented': False},
|
|
'PlacementGroupName': {'Type': 'String',
|
|
'Implemented': False},
|
|
'PrivateIpAddress': {'Type': 'String',
|
|
'Implemented': False},
|
|
'RamDiskId': {'Type': 'String',
|
|
'Implemented': False},
|
|
'SecurityGroups': {'Type': 'List'},
|
|
'SecurityGroupIds': {'Type': 'List',
|
|
'Implemented': False},
|
|
'SourceDestCheck': {'Type': 'Boolean',
|
|
'Implemented': False},
|
|
'SubnetId': {'Type': 'String',
|
|
'Implemented': False},
|
|
'Tags': {'Type': 'List',
|
|
'Implemented': False},
|
|
'Tenancy': {'Type': 'String',
|
|
'AllowedValues': ['dedicated', 'default'],
|
|
'Implemented': False},
|
|
'UserData': {'Type': 'String'},
|
|
'Volumes': {'Type': 'List',
|
|
'Implemented': False}}
|
|
|
|
def __init__(self, name, json_snippet, stack):
|
|
super(Instance, self).__init__(name, json_snippet, stack)
|
|
self.ipaddress = None
|
|
self.mime_string = None
|
|
|
|
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 _set_ipaddress(self, networks):
|
|
'''
|
|
Read the server's IP address from a list of networks provided by Nova
|
|
'''
|
|
# Just record the first ipaddress
|
|
for n in networks:
|
|
self.ipaddress = networks[n][0]
|
|
break
|
|
|
|
def _ipaddress(self):
|
|
'''
|
|
Return the server's IP address, fetching it from Nova if necessary
|
|
'''
|
|
if self.ipaddress is None:
|
|
try:
|
|
server = self.nova().servers.get(self.instance_id)
|
|
except NotFound as ex:
|
|
logger.warn('Instance IP address not found (%s)' % str(ex))
|
|
else:
|
|
self._set_ipaddress(server.networks)
|
|
|
|
return self.ipaddress or '0.0.0.0'
|
|
|
|
def FnGetAtt(self, key):
|
|
res = None
|
|
if key == 'AvailabilityZone':
|
|
res = self.properties['AvailabilityZone']
|
|
elif key == 'PublicIp':
|
|
res = self._ipaddress()
|
|
elif key == 'PrivateDnsName':
|
|
res = self._ipaddress()
|
|
else:
|
|
raise exception.InvalidTemplateAttribute(resource=self.name,
|
|
key=key)
|
|
|
|
# TODO(asalkeld) PrivateDnsName, PublicDnsName & PrivateIp
|
|
|
|
logger.info('%s.GetAtt(%s) == %s' % (self.name, key, res))
|
|
return unicode(res)
|
|
|
|
def _build_userdata(self, userdata):
|
|
if not self.mime_string:
|
|
# Build mime multipart data blob for cloudinit userdata
|
|
|
|
def make_subpart(content, filename, subtype=None):
|
|
if subtype is None:
|
|
subtype = os.path.splitext(filename)[0]
|
|
msg = MIMEText(content, _subtype=subtype)
|
|
msg.add_header('Content-Disposition', 'attachment',
|
|
filename=filename)
|
|
return msg
|
|
|
|
def read_cloudinit_file(fn):
|
|
with open(os.path.join(heat.__path__[0], 'cloudinit', fn),
|
|
'r') as fp:
|
|
return fp.read()
|
|
|
|
attachments = [(read_cloudinit_file('config'), 'cloud-config'),
|
|
(read_cloudinit_file('part-handler.py'),
|
|
'part-handler.py'),
|
|
(userdata, 'startup', 'x-shellscript')]
|
|
|
|
if 'Metadata' in self.t:
|
|
metadata = self.parsed_template()['Metadata']
|
|
attachments.append((json.dumps(metadata),
|
|
'cfn-init-data', 'x-cfninitdata'))
|
|
|
|
metadata_server = resources.metadata_server()
|
|
if metadata_server:
|
|
attachments.append((metadata_server,
|
|
'cfn-metadata-server', 'x-cfninitdata'))
|
|
|
|
subparts = [make_subpart(*args) for args in attachments]
|
|
mime_blob = MIMEMultipart(_subparts=subparts)
|
|
|
|
self.mime_string = mime_blob.as_string()
|
|
|
|
return self.mime_string
|
|
|
|
def handle_create(self):
|
|
security_groups = self.properties.get('SecurityGroups')
|
|
userdata = self.properties['UserData']
|
|
flavor = self.itype_oflavor[self.properties['InstanceType']]
|
|
key_name = self.properties['KeyName']
|
|
|
|
keypairs = [k.name for k in self.nova().keypairs.list()]
|
|
if key_name not in keypairs:
|
|
raise exception.UserKeyPairMissing(key_name=key_name)
|
|
|
|
image_name = self.properties['ImageId']
|
|
image_id = None
|
|
image_list = self.nova().images.list()
|
|
for o in image_list:
|
|
if o.name == image_name:
|
|
image_id = o.id
|
|
|
|
if image_id is None:
|
|
logger.info("Image %s was not found in glance" % image_name)
|
|
raise exception.ImageNotFound(image_name=image_name)
|
|
|
|
flavor_list = self.nova().flavors.list()
|
|
for o in flavor_list:
|
|
if o.name == flavor:
|
|
flavor_id = o.id
|
|
|
|
server_userdata = self._build_userdata(userdata)
|
|
server = self.nova().servers.create(name=self.name, image=image_id,
|
|
flavor=flavor_id,
|
|
key_name=key_name,
|
|
security_groups=security_groups,
|
|
userdata=server_userdata)
|
|
while server.status == 'BUILD':
|
|
server.get()
|
|
eventlet.sleep(1)
|
|
if server.status == 'ACTIVE':
|
|
self.instance_id_set(server.id)
|
|
self._set_ipaddress(server.networks)
|
|
else:
|
|
raise exception.Error('%s instance[%s] status[%s]' %
|
|
('nova reported unexpected',
|
|
self.name, server.status))
|
|
|
|
def validate(self):
|
|
'''
|
|
Validate any of the provided params
|
|
'''
|
|
res = super(Instance, self).validate()
|
|
if res:
|
|
return res
|
|
|
|
#check validity of key
|
|
try:
|
|
key_name = self.properties['KeyName']
|
|
except ValueError:
|
|
return
|
|
else:
|
|
keypairs = self.nova().keypairs.list()
|
|
valid_key = False
|
|
for k in keypairs:
|
|
if k.name == key_name:
|
|
return
|
|
return {'Error':
|
|
'Provided KeyName is not registered with nova'}
|
|
|
|
def handle_delete(self):
|
|
try:
|
|
server = self.nova().servers.get(self.instance_id)
|
|
except NotFound:
|
|
pass
|
|
else:
|
|
server.delete()
|
|
self.instance_id = None
|