438 lines
18 KiB
Python
438 lines
18 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_log import log as logging
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from oslo_utils import excutils
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import six
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from heat.common import exception
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from heat.common.i18n import _
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from heat.common.i18n import _LE
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from heat.common.i18n import _LI
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from heat.common.i18n import _LW
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from heat.engine import attributes
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from heat.engine import constraints
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from heat.engine import properties
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from heat.engine import resource
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from heat.engine.resources import vpc
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LOG = logging.getLogger(__name__)
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class ElasticIp(resource.Resource):
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PROPERTIES = (
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DOMAIN, INSTANCE_ID,
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) = (
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'Domain', 'InstanceId',
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)
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ATTRIBUTES = (
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ALLOCATION_ID,
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) = (
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'AllocationId',
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)
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properties_schema = {
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DOMAIN: properties.Schema(
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properties.Schema.STRING,
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_('Set to "vpc" to have IP address allocation associated to your '
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'VPC.'),
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constraints=[
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constraints.AllowedValues(['vpc']),
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]
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),
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INSTANCE_ID: properties.Schema(
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properties.Schema.STRING,
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_('Instance ID to associate with EIP.'),
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update_allowed=True,
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constraints=[
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constraints.CustomConstraint('nova.server')
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]
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),
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}
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attributes_schema = {
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ALLOCATION_ID: attributes.Schema(
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_('ID that AWS assigns to represent the allocation of the address '
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'for use with Amazon VPC. Returned only for VPC elastic IP '
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'addresses.')
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),
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}
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def __init__(self, name, json_snippet, stack):
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super(ElasticIp, self).__init__(name, json_snippet, stack)
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self.ipaddress = None
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def _ipaddress(self):
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if self.ipaddress is None and self.resource_id is not None:
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if self.properties[self.DOMAIN]:
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try:
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ips = self.neutron().show_floatingip(self.resource_id)
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except Exception as ex:
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self.client_plugin('neutron').ignore_not_found(ex)
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else:
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self.ipaddress = ips['floatingip']['floating_ip_address']
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else:
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try:
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ips = self.nova().floating_ips.get(self.resource_id)
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except Exception as e:
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self.client_plugin('nova').ignore_not_found(e)
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else:
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self.ipaddress = ips.ip
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return self.ipaddress or ''
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def handle_create(self):
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"""Allocate a floating IP for the current tenant."""
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ips = None
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if self.properties[self.DOMAIN]:
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from heat.engine.resources import internet_gateway
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ext_net = internet_gateway.InternetGateway.get_external_network_id(
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self.neutron())
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props = {'floating_network_id': ext_net}
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ips = self.neutron().create_floatingip({
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'floatingip': props})['floatingip']
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self.ipaddress = ips['floating_ip_address']
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self.resource_id_set(ips['id'])
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LOG.info(_LI('ElasticIp create %s'), str(ips))
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else:
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try:
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ips = self.nova().floating_ips.create()
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except Exception as e:
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with excutils.save_and_reraise_exception():
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if self.client_plugin('nova').is_not_found(e):
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LOG.error(_LE("No default floating IP pool configured."
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" Set 'default_floating_pool' in "
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"nova.conf."))
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if ips:
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self.ipaddress = ips.ip
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self.resource_id_set(ips.id)
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LOG.info(_LI('ElasticIp create %s'), str(ips))
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instance_id = self.properties[self.INSTANCE_ID]
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if instance_id:
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server = self.nova().servers.get(instance_id)
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server.add_floating_ip(self._ipaddress())
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def handle_delete(self):
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if self.resource_id is None:
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return
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# may be just create an eip when creation, or create the association
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# failed when creation, there will no association, if we attempt to
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# disassociate, an exception will raised, we need
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# to catch and ignore it, and then to deallocate the eip
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instance_id = self.properties[self.INSTANCE_ID]
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if instance_id:
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try:
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server = self.nova().servers.get(instance_id)
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if server:
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server.remove_floating_ip(self._ipaddress())
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except Exception as e:
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is_not_found = self.client_plugin('nova').is_not_found(e)
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is_unprocessable_entity = self.client_plugin(
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'nova').is_unprocessable_entity(e)
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if (not is_not_found and not is_unprocessable_entity):
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raise
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# deallocate the eip
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if self.properties[self.DOMAIN]:
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try:
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self.neutron().delete_floatingip(self.resource_id)
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except Exception as ex:
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self.client_plugin('neutron').ignore_not_found(ex)
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else:
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try:
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self.nova().floating_ips.delete(self.resource_id)
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except Exception as e:
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self.client_plugin('nova').ignore_not_found(e)
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def handle_update(self, json_snippet, tmpl_diff, prop_diff):
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if prop_diff:
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if self.INSTANCE_ID in prop_diff:
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instance_id = prop_diff.get(self.INSTANCE_ID)
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if instance_id:
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# no need to remove the floating ip from the old instance,
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# nova does this automatically when calling
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# add_floating_ip().
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server = self.nova().servers.get(instance_id)
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server.add_floating_ip(self._ipaddress())
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else:
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# to remove the floating_ip from the old instance
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instance_id_old = self.properties[self.INSTANCE_ID]
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if instance_id_old:
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server = self.nova().servers.get(instance_id_old)
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server.remove_floating_ip(self._ipaddress())
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def FnGetRefId(self):
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return six.text_type(self._ipaddress())
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def _resolve_attribute(self, name):
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if name == self.ALLOCATION_ID:
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return six.text_type(self.resource_id)
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class ElasticIpAssociation(resource.Resource):
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PROPERTIES = (
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INSTANCE_ID, EIP, ALLOCATION_ID, NETWORK_INTERFACE_ID,
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) = (
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'InstanceId', 'EIP', 'AllocationId', 'NetworkInterfaceId',
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)
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properties_schema = {
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INSTANCE_ID: properties.Schema(
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properties.Schema.STRING,
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_('Instance ID to associate with EIP specified by EIP property.'),
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update_allowed=True,
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constraints=[
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constraints.CustomConstraint('nova.server')
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]
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),
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EIP: properties.Schema(
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properties.Schema.STRING,
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_('EIP address to associate with instance.'),
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update_allowed=True
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),
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ALLOCATION_ID: properties.Schema(
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properties.Schema.STRING,
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_('Allocation ID for VPC EIP address.'),
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update_allowed=True
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),
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NETWORK_INTERFACE_ID: properties.Schema(
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properties.Schema.STRING,
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_('Network interface ID to associate with EIP.'),
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update_allowed=True
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),
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}
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def FnGetRefId(self):
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return self.physical_resource_name_or_FnGetRefId()
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def validate(self):
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'''
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Validate any of the provided parameters
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'''
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super(ElasticIpAssociation, self).validate()
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eip = self.properties[self.EIP]
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allocation_id = self.properties[self.ALLOCATION_ID]
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instance_id = self.properties[self.INSTANCE_ID]
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ni_id = self.properties[self.NETWORK_INTERFACE_ID]
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# to check EIP and ALLOCATION_ID, should provide one of
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if bool(eip) == bool(allocation_id):
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msg = _("Either 'EIP' or 'AllocationId' must be provided.")
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raise exception.StackValidationFailed(message=msg)
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# to check if has EIP, also should specify InstanceId
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if eip and not instance_id:
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msg = _("Must specify 'InstanceId' if you specify 'EIP'.")
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raise exception.StackValidationFailed(message=msg)
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# to check InstanceId and NetworkInterfaceId, should provide
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# at least one
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if not instance_id and not ni_id:
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raise exception.PropertyUnspecifiedError('InstanceId',
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'NetworkInterfaceId')
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def _get_port_info(self, ni_id=None, instance_id=None):
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port_id = None
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port_rsrc = None
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if ni_id:
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port_rsrc = self.neutron().list_ports(id=ni_id)['ports'][0]
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port_id = ni_id
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elif instance_id:
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ports = self.neutron().list_ports(device_id=instance_id)
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port_rsrc = ports['ports'][0]
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port_id = port_rsrc['id']
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return port_id, port_rsrc
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def _neutron_add_gateway_router(self, float_id, network_id):
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router = vpc.VPC.router_for_vpc(self.neutron(), network_id)
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if router is not None:
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floatingip = self.neutron().show_floatingip(float_id)
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floating_net_id = floatingip['floatingip']['floating_network_id']
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self.neutron().add_gateway_router(
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router['id'], {'network_id': floating_net_id})
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def _neutron_update_floating_ip(self, allocationId, port_id=None,
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ignore_not_found=False):
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try:
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self.neutron().update_floatingip(
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allocationId,
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{'floatingip': {'port_id': port_id}})
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except Exception as e:
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if ignore_not_found:
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self.client_plugin('neutron').ignore_not_found(e)
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else:
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raise
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def _nova_remove_floating_ip(self, instance_id, eip,
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ignore_not_found=False):
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server = None
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try:
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server = self.nova().servers.get(instance_id)
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server.remove_floating_ip(eip)
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except Exception as e:
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is_not_found = self.client_plugin('nova').is_not_found(e)
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iue = self.client_plugin('nova').is_unprocessable_entity(e)
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if ((not ignore_not_found and is_not_found) or
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(not is_not_found and not iue)):
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raise
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return server
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def _floatingIp_detach(self,
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nova_ignore_not_found=False,
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neutron_ignore_not_found=False):
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eip = self.properties[self.EIP]
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allocation_id = self.properties[self.ALLOCATION_ID]
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instance_id = self.properties[self.INSTANCE_ID]
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server = None
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if eip:
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# if has eip_old, to remove the eip_old from the instance
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server = self._nova_remove_floating_ip(instance_id,
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eip,
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nova_ignore_not_found)
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else:
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# if hasn't eip_old, to update neutron floatingIp
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self._neutron_update_floating_ip(allocation_id,
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None,
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neutron_ignore_not_found)
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return server
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def _handle_update_eipInfo(self, prop_diff):
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eip_update = prop_diff.get(self.EIP)
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allocation_id_update = prop_diff.get(self.ALLOCATION_ID)
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instance_id = self.properties[self.INSTANCE_ID]
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ni_id = self.properties[self.NETWORK_INTERFACE_ID]
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if eip_update:
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server = self._floatingIp_detach(neutron_ignore_not_found=True)
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if server:
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# then to attach the eip_update to the instance
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server.add_floating_ip(eip_update)
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self.resource_id_set(eip_update)
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elif allocation_id_update:
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self._floatingIp_detach(nova_ignore_not_found=True)
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port_id, port_rsrc = self._get_port_info(ni_id, instance_id)
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if not port_id or not port_rsrc:
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LOG.error(_LE('Port not specified.'))
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raise exception.NotFound(_('Failed to update, can not found '
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'port info.'))
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network_id = port_rsrc['network_id']
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self._neutron_add_gateway_router(allocation_id_update, network_id)
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self._neutron_update_floating_ip(allocation_id_update, port_id)
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self.resource_id_set(allocation_id_update)
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def _handle_update_portInfo(self, prop_diff):
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instance_id_update = prop_diff.get(self.INSTANCE_ID)
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ni_id_update = prop_diff.get(self.NETWORK_INTERFACE_ID)
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eip = self.properties[self.EIP]
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allocation_id = self.properties[self.ALLOCATION_ID]
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# if update portInfo, no need to detach the port from
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# old instance/floatingip.
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if eip:
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server = self.nova().servers.get(instance_id_update)
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server.add_floating_ip(eip)
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else:
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port_id, port_rsrc = self._get_port_info(ni_id_update,
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instance_id_update)
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if not port_id or not port_rsrc:
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LOG.error(_LE('Port not specified.'))
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raise exception.NotFound(_('Failed to update, can not found '
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'port info.'))
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network_id = port_rsrc['network_id']
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self._neutron_add_gateway_router(allocation_id, network_id)
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self._neutron_update_floating_ip(allocation_id, port_id)
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def _validate_update_properties(self, prop_diff):
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# according to aws doc, when update allocation_id or eip,
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# if you also change the InstanceId or NetworkInterfaceId,
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# should go to Replacement flow
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if self.ALLOCATION_ID in prop_diff or self.EIP in prop_diff:
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instance_id = prop_diff.get(self.INSTANCE_ID)
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ni_id = prop_diff.get(self.NETWORK_INTERFACE_ID)
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if instance_id or ni_id:
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raise resource.UpdateReplace(self.name)
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# according to aws doc, when update the instance_id or
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# network_interface_id, if you also change the EIP or
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# ALLOCATION_ID, should go to Replacement flow
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if (self.INSTANCE_ID in prop_diff or
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self.NETWORK_INTERFACE_ID in prop_diff):
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eip = prop_diff.get(self.EIP)
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allocation_id = prop_diff.get(self.ALLOCATION_ID)
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if eip or allocation_id:
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raise resource.UpdateReplace(self.name)
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def handle_create(self):
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"""Add a floating IP address to a server."""
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if self.properties[self.EIP]:
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server = self.nova().servers.get(self.properties[self.INSTANCE_ID])
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server.add_floating_ip(self.properties[self.EIP])
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self.resource_id_set(self.properties[self.EIP])
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LOG.debug('ElasticIpAssociation '
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'%(instance)s.add_floating_ip(%(eip)s)',
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{'instance': self.properties[self.INSTANCE_ID],
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'eip': self.properties[self.EIP]})
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elif self.properties[self.ALLOCATION_ID]:
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ni_id = self.properties[self.NETWORK_INTERFACE_ID]
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instance_id = self.properties[self.INSTANCE_ID]
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port_id, port_rsrc = self._get_port_info(ni_id, instance_id)
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if not port_id or not port_rsrc:
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LOG.warn(_LW('Skipping association, resource not specified'))
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return
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float_id = self.properties[self.ALLOCATION_ID]
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network_id = port_rsrc['network_id']
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self._neutron_add_gateway_router(float_id, network_id)
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self._neutron_update_floating_ip(float_id, port_id)
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self.resource_id_set(float_id)
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def handle_delete(self):
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"""Remove a floating IP address from a server or port."""
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if self.resource_id is None:
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return
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if self.properties[self.EIP]:
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instance_id = self.properties[self.INSTANCE_ID]
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eip = self.properties[self.EIP]
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self._nova_remove_floating_ip(instance_id,
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eip,
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ignore_not_found=True)
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elif self.properties[self.ALLOCATION_ID]:
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float_id = self.properties[self.ALLOCATION_ID]
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self._neutron_update_floating_ip(float_id,
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port_id=None,
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ignore_not_found=True)
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def handle_update(self, json_snippet, tmpl_diff, prop_diff):
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if prop_diff:
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self._validate_update_properties(prop_diff)
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if self.ALLOCATION_ID in prop_diff or self.EIP in prop_diff:
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self._handle_update_eipInfo(prop_diff)
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elif (self.INSTANCE_ID in prop_diff or
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self.NETWORK_INTERFACE_ID in prop_diff):
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self._handle_update_portInfo(prop_diff)
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def resource_mapping():
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return {
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'AWS::EC2::EIP': ElasticIp,
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'AWS::EC2::EIPAssociation': ElasticIpAssociation,
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}
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