289 lines
10 KiB
Python
289 lines
10 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 novaclient import exceptions as nova_exceptions
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import six
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from heat.common import exception
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from heat.engine import properties
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from heat.engine import resource
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class SecurityGroup(resource.Resource):
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PROPERTIES = (
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GROUP_DESCRIPTION, VPC_ID, SECURITY_GROUP_INGRESS,
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SECURITY_GROUP_EGRESS,
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) = (
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'GroupDescription', 'VpcId', 'SecurityGroupIngress',
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'SecurityGroupEgress',
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)
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_RULE_KEYS = (
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RULE_CIDR_IP, RULE_FROM_PORT, RULE_TO_PORT, RULE_IP_PROTOCOL,
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RULE_SOURCE_SECURITY_GROUP_ID, RULE_SOURCE_SECURITY_GROUP_NAME,
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RULE_SOURCE_SECURITY_GROUP_OWNER_ID,
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) = (
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'CidrIp', 'FromPort', 'ToPort', 'IpProtocol',
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'SourceSecurityGroupId', 'SourceSecurityGroupName',
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'SourceSecurityGroupOwnerId',
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)
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_rule_schema = {
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RULE_CIDR_IP: properties.Schema(
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properties.Schema.STRING
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),
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RULE_FROM_PORT: properties.Schema(
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properties.Schema.STRING
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),
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RULE_TO_PORT: properties.Schema(
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properties.Schema.STRING
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),
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RULE_IP_PROTOCOL: properties.Schema(
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properties.Schema.STRING
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),
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RULE_SOURCE_SECURITY_GROUP_ID: properties.Schema(
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properties.Schema.STRING
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),
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RULE_SOURCE_SECURITY_GROUP_NAME: properties.Schema(
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properties.Schema.STRING
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),
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RULE_SOURCE_SECURITY_GROUP_OWNER_ID: properties.Schema(
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properties.Schema.STRING,
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implemented=False
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),
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}
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properties_schema = {
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GROUP_DESCRIPTION: properties.Schema(
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properties.Schema.STRING,
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_('Description of the security group.'),
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required=True
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),
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VPC_ID: properties.Schema(
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properties.Schema.STRING,
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_('Physical ID of the VPC.')
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),
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SECURITY_GROUP_INGRESS: properties.Schema(
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properties.Schema.LIST,
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schema=properties.Schema(
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properties.Schema.MAP,
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_('List of security group ingress rules.'),
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schema=_rule_schema,
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)
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),
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SECURITY_GROUP_EGRESS: properties.Schema(
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properties.Schema.LIST,
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schema=properties.Schema(
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properties.Schema.MAP,
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_('List of security group egress rules.'),
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schema=_rule_schema,
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)
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),
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}
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def handle_create(self):
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if self.properties[self.VPC_ID]:
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self._handle_create_neutron()
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else:
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self._handle_create_nova()
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def _convert_to_neutron_rule(self, direction, sg_rule):
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return {
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'direction': direction,
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'ethertype': 'IPv4',
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'remote_ip_prefix': sg_rule.get(self.RULE_CIDR_IP),
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'port_range_min': sg_rule.get(self.RULE_FROM_PORT),
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'port_range_max': sg_rule.get(self.RULE_TO_PORT),
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'protocol': sg_rule.get(self.RULE_IP_PROTOCOL),
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# Neutron understands both names and ids
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'remote_group_id': sg_rule.get(self.RULE_SOURCE_SECURITY_GROUP_ID)
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or sg_rule.get(self.RULE_SOURCE_SECURITY_GROUP_NAME),
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'security_group_id': self.resource_id
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}
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def _handle_create_neutron(self):
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from neutronclient.common.exceptions import NeutronClientException
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client = self.neutron()
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sec = client.create_security_group({'security_group': {
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'name': self.physical_resource_name(),
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'description': self.properties[self.GROUP_DESCRIPTION]}
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})['security_group']
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def sanitize_security_group(i):
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# Neutron only accepts positive ints
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if (i.get(self.RULE_FROM_PORT) is not None and
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int(i[self.RULE_FROM_PORT]) < 0):
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i[self.RULE_FROM_PORT] = None
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if (i.get(self.RULE_TO_PORT) is not None and
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int(i[self.RULE_TO_PORT]) < 0):
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i[self.RULE_TO_PORT] = None
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if (i.get(self.RULE_FROM_PORT) is None and
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i.get(self.RULE_TO_PORT) is None):
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i[self.RULE_CIDR_IP] = None
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self.resource_id_set(sec['id'])
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if self.properties[self.SECURITY_GROUP_INGRESS]:
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for i in self.properties[self.SECURITY_GROUP_INGRESS]:
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sanitize_security_group(i)
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try:
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rule = client.create_security_group_rule({
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'security_group_rule':
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self._convert_to_neutron_rule('ingress', i)
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})
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except NeutronClientException as ex:
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if ex.status_code == 409:
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# no worries, the rule is already there
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pass
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else:
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# unexpected error
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raise
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if self.properties[self.SECURITY_GROUP_EGRESS]:
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# Delete the default rules which allow all egress traffic
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for rule in sec['security_group_rules']:
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if rule['direction'] == 'egress':
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client.delete_security_group_rule(rule['id'])
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for i in self.properties[self.SECURITY_GROUP_EGRESS]:
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sanitize_security_group(i)
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try:
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rule = client.create_security_group_rule({
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'security_group_rule':
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self._convert_to_neutron_rule('egress', i)
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})
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except NeutronClientException as ex:
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if ex.status_code == 409:
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# no worries, the rule is already there
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pass
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else:
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# unexpected error
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raise
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def _handle_create_nova(self):
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sec = None
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groups = self.nova().security_groups.list()
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for group in groups:
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if group.name == self.physical_resource_name():
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sec = group
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break
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if not sec:
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sec = self.nova().security_groups.create(
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self.physical_resource_name(),
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self.properties[self.GROUP_DESCRIPTION])
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self.resource_id_set(sec.id)
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if self.properties[self.SECURITY_GROUP_INGRESS]:
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rules_client = self.nova().security_group_rules
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for i in self.properties[self.SECURITY_GROUP_INGRESS]:
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source_group_id = None
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if i.get(self.RULE_SOURCE_SECURITY_GROUP_ID) is not None:
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source_group_id = i[self.RULE_SOURCE_SECURITY_GROUP_ID]
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elif i.get(self.RULE_SOURCE_SECURITY_GROUP_NAME) is not None:
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rule_name = i[self.RULE_SOURCE_SECURITY_GROUP_NAME]
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for group in groups:
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if group.name == rule_name:
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source_group_id = group.id
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break
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else:
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raise SecurityGroupNotFound(group_name=rule_name)
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try:
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rules_client.create(
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sec.id,
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i.get(self.RULE_IP_PROTOCOL),
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i.get(self.RULE_FROM_PORT),
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i.get(self.RULE_TO_PORT),
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i.get(self.RULE_CIDR_IP),
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source_group_id)
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except nova_exceptions.BadRequest as ex:
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if six.text_type(ex).find('already exists') >= 0:
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# no worries, the rule is already there
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pass
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else:
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# unexpected error
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raise
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def handle_delete(self):
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if self.properties[self.VPC_ID]:
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self._handle_delete_neutron()
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else:
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self._handle_delete_nova()
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def _handle_delete_nova(self):
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if self.resource_id is not None:
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try:
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sec = self.nova().security_groups.get(self.resource_id)
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except nova_exceptions.NotFound:
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pass
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else:
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for rule in sec.rules:
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try:
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self.nova().security_group_rules.delete(rule['id'])
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except nova_exceptions.NotFound:
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pass
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self.nova().security_groups.delete(self.resource_id)
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self.resource_id_set(None)
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def _handle_delete_neutron(self):
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from neutronclient.common.exceptions import NeutronClientException
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client = self.neutron()
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if self.resource_id is not None:
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try:
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sec = client.show_security_group(
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self.resource_id)['security_group']
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except NeutronClientException as ex:
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if ex.status_code != 404:
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raise
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else:
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for rule in sec['security_group_rules']:
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try:
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client.delete_security_group_rule(rule['id'])
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except NeutronClientException as ex:
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if ex.status_code != 404:
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raise
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try:
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client.delete_security_group(self.resource_id)
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except NeutronClientException as ex:
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if ex.status_code != 404:
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raise
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self.resource_id_set(None)
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def FnGetRefId(self):
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if self.properties[self.VPC_ID]:
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return super(SecurityGroup, self).FnGetRefId()
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else:
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return self.physical_resource_name()
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def validate(self):
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res = super(SecurityGroup, self).validate()
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if res:
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return res
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if self.properties[self.SECURITY_GROUP_EGRESS] and not \
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self.properties[self.VPC_ID]:
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raise exception.EgressRuleNotAllowed()
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class SecurityGroupNotFound(exception.HeatException):
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msg_fmt = _('Security Group "%(group_name)s" not found')
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def resource_mapping():
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return {
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'AWS::EC2::SecurityGroup': SecurityGroup,
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}
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