17ef53cda6
blueprint: quantum-fwaas-agent This is the first iteration of the FWaaS Agent with some basic functionality to enable integration of Plugin - Agent - Driver. An inheritance approach is taken with the L3 Agent to enable the agent side messaging. Unit tests, included, coverage being increased Change-Id: Ib0970fdc4ad1ac53df66fba172a5a7f7d7ee3f1b
458 lines
16 KiB
Python
458 lines
16 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2013 Big Switch Networks, Inc.
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# All Rights Reserved.
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#
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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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#
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# @author: Sumit Naiksatam, sumitnaiksatam@gmail.com, Big Switch Networks, Inc.
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import abc
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from oslo.config import cfg
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from neutron.api import extensions
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from neutron.api.v2 import attributes as attr
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from neutron.api.v2 import base
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from neutron.common import exceptions as qexception
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from neutron import manager
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from neutron.openstack.common import log as logging
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from neutron.plugins.common import constants
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from neutron.services.service_base import ServicePluginBase
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LOG = logging.getLogger(__name__)
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# Firewall Exceptions
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class FirewallNotFound(qexception.NotFound):
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message = _("Firewall %(firewall_id)s could not be found.")
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class FirewallInUse(qexception.InUse):
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message = _("Firewall %(firewall_id)s is still active.")
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class FirewallInPendingState(qexception.Conflict):
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message = _("Operation cannot be performed since associated Firewall "
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"%(firewall_id)s is in %(pending_state)s.")
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class FirewallPolicyNotFound(qexception.NotFound):
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message = _("Firewall Policy %(firewall_policy_id)s could not be found.")
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class FirewallPolicyInUse(qexception.InUse):
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message = _("Firewall Policy %(firewall_policy_id)s is being used.")
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class FirewallRuleNotFound(qexception.NotFound):
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message = _("Firewall Rule %(firewall_rule_id)s could not be found.")
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class FirewallRuleInUse(qexception.InUse):
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message = _("Firewall Rule %(firewall_rule_id)s is being used.")
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class FirewallRuleNotAssociatedWithPolicy(qexception.InvalidInput):
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message = _("Firewall Rule %(firewall_rule_id)s is not associated "
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" with Firewall Policy %(firewall_policy_id)s.")
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class FirewallRuleInvalidProtocol(qexception.InvalidInput):
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message = _("Firewall Rule protocol %(protocol)s is not supported. "
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"Only protocol values %(values)s and their integer "
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"representation (0 to 255) are supported.")
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class FirewallRuleInvalidAction(qexception.InvalidInput):
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message = _("Firewall rule action %(action)s is not supported. "
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"Only action values %(values)s are supported.")
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class FirewallInvalidPortValue(qexception.InvalidInput):
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message = _("Invalid value for port %(port)s.")
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class FirewallRuleInfoMissing(qexception.InvalidInput):
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message = _("Missing rule info argument for insert/remove "
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"rule operation.")
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class FirewallInternalDriverError(qexception.NeutronException):
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"""Fwaas exception for all driver errors.
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On any failure or exception in the driver, driver should log it and
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raise this exception to the agent
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"""
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message = _("%(driver)s: Internal driver error.")
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fw_valid_protocol_values = [None, constants.TCP, constants.UDP, constants.ICMP]
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fw_valid_action_values = [constants.FWAAS_ALLOW, constants.FWAAS_DENY]
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def convert_protocol(value):
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if value is None:
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return
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if value.isdigit():
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val = int(value)
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if 0 <= val <= 255:
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return val
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else:
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raise FirewallRuleInvalidProtocol(protocol=value,
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values=
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fw_valid_protocol_values)
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elif value.lower() in fw_valid_protocol_values:
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return value.lower()
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else:
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raise FirewallRuleInvalidProtocol(protocol=value,
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values=
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fw_valid_protocol_values)
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def convert_action_to_case_insensitive(value):
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if value is None:
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return
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else:
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return value.lower()
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def convert_port_to_string(value):
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if value is None:
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return
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else:
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return str(value)
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def _validate_port_range(data, key_specs=None):
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if data is None:
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return
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data = str(data)
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ports = data.split(':')
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for p in ports:
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try:
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val = int(p)
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except (ValueError, TypeError):
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msg = _("Port '%s' is not a valid number") % p
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LOG.debug(msg)
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return msg
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if val <= 0 or val > 65535:
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msg = _("Invalid port '%s'") % p
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LOG.debug(msg)
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return msg
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def _validate_ip_or_subnet_or_none(data, valid_values=None):
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if data is None:
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return None
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msg_ip = attr._validate_ip_address(data, valid_values)
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if not msg_ip:
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return
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msg_subnet = attr._validate_subnet(data, valid_values)
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if not msg_subnet:
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return
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return _("%(msg_ip)s and %(msg_subnet)s") % {'msg_ip': msg_ip,
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'msg_subnet': msg_subnet}
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attr.validators['type:port_range'] = _validate_port_range
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attr.validators['type:ip_or_subnet_or_none'] = _validate_ip_or_subnet_or_none
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RESOURCE_ATTRIBUTE_MAP = {
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'firewall_rules': {
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'id': {'allow_post': False, 'allow_put': False,
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'validate': {'type:uuid': None},
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'is_visible': True, 'primary_key': True},
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'tenant_id': {'allow_post': True, 'allow_put': False,
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'required_by_policy': True,
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'is_visible': True},
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'name': {'allow_post': True, 'allow_put': True,
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'validate': {'type:string': None},
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'is_visible': True, 'default': ''},
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'description': {'allow_post': True, 'allow_put': True,
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'validate': {'type:string': None},
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'is_visible': True, 'default': ''},
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'firewall_policy_id': {'allow_post': False, 'allow_put': False,
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'validate': {'type:uuid_or_none': None},
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'is_visible': True},
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'shared': {'allow_post': True, 'allow_put': True,
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'default': False, 'convert_to': attr.convert_to_boolean,
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'is_visible': True, 'required_by_policy': True,
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'enforce_policy': True},
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'protocol': {'allow_post': True, 'allow_put': True,
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'is_visible': True, 'default': None,
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'convert_to': convert_protocol,
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'validate': {'type:values': fw_valid_protocol_values}},
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'ip_version': {'allow_post': True, 'allow_put': True,
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'default': 4, 'convert_to': attr.convert_to_int,
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'validate': {'type:values': [4, 6]},
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'is_visible': True},
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'source_ip_address': {'allow_post': True, 'allow_put': True,
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'validate': {'type:ip_or_subnet_or_none': None},
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'is_visible': True, 'default': None},
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'destination_ip_address': {'allow_post': True, 'allow_put': True,
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'validate': {'type:ip_or_subnet_or_none':
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None},
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'is_visible': True, 'default': None},
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'source_port': {'allow_post': True, 'allow_put': True,
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'validate': {'type:port_range': None},
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'convert_to': convert_port_to_string,
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'default': None, 'is_visible': True},
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'destination_port': {'allow_post': True, 'allow_put': True,
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'validate': {'type:port_range': None},
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'convert_to': convert_port_to_string,
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'default': None, 'is_visible': True},
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'position': {'allow_post': False, 'allow_put': False,
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'default': None, 'is_visible': True},
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'action': {'allow_post': True, 'allow_put': True,
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'convert_to': convert_action_to_case_insensitive,
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'validate': {'type:values': fw_valid_action_values},
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'is_visible': True, 'default': 'deny'},
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'enabled': {'allow_post': True, 'allow_put': True,
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'default': True, 'convert_to': attr.convert_to_boolean,
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'is_visible': True},
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},
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'firewall_policies': {
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'id': {'allow_post': False, 'allow_put': False,
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'validate': {'type:uuid': None},
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'is_visible': True,
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'primary_key': True},
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'tenant_id': {'allow_post': True, 'allow_put': False,
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'required_by_policy': True,
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'is_visible': True},
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'name': {'allow_post': True, 'allow_put': True,
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'validate': {'type:string': None},
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'is_visible': True, 'default': ''},
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'description': {'allow_post': True, 'allow_put': True,
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'validate': {'type:string': None},
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'is_visible': True, 'default': ''},
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'shared': {'allow_post': True, 'allow_put': True,
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'default': False, 'convert_to': attr.convert_to_boolean,
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'is_visible': True, 'required_by_policy': True,
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'enforce_policy': True},
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'firewall_rules': {'allow_post': True, 'allow_put': True,
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'convert_to': attr.convert_none_to_empty_list,
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'default': None, 'is_visible': True},
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'audited': {'allow_post': True, 'allow_put': True,
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'default': False, 'convert_to': attr.convert_to_boolean,
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'is_visible': True},
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},
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'firewalls': {
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'id': {'allow_post': False, 'allow_put': False,
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'validate': {'type:uuid': None},
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'is_visible': True,
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'primary_key': True},
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'tenant_id': {'allow_post': True, 'allow_put': False,
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'required_by_policy': True,
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'is_visible': True},
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'name': {'allow_post': True, 'allow_put': True,
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'validate': {'type:string': None},
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'is_visible': True, 'default': ''},
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'description': {'allow_post': True, 'allow_put': True,
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'validate': {'type:string': None},
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'is_visible': True, 'default': ''},
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'admin_state_up': {'allow_post': True, 'allow_put': True,
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'default': True,
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'convert_to': attr.convert_to_boolean,
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'is_visible': True},
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'status': {'allow_post': False, 'allow_put': False,
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'is_visible': True},
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'shared': {'allow_post': True, 'allow_put': True,
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'default': False, 'convert_to': attr.convert_to_boolean,
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'is_visible': False, 'required_by_policy': True,
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'enforce_policy': True},
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'firewall_policy_id': {'allow_post': True, 'allow_put': True,
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'validate': {'type:uuid_or_none': None},
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'is_visible': True},
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},
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}
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firewall_quota_opts = [
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cfg.IntOpt('quota_firewall',
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default=1,
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help=_('Number of firewalls allowed per tenant, -1 for '
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'unlimited')),
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cfg.IntOpt('quota_firewall_policy',
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default=1,
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help=_('Number of firewall policies allowed per tenant, -1 '
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'for unlimited')),
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cfg.IntOpt('quota_firewall_rule',
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default=-1,
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help=_('Number of firewall rules allowed per tenant, -1 '
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'for unlimited')),
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]
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cfg.CONF.register_opts(firewall_quota_opts, 'QUOTAS')
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class Firewall(extensions.ExtensionDescriptor):
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@classmethod
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def get_name(cls):
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return "Firewall service"
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@classmethod
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def get_alias(cls):
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return "fwaas"
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@classmethod
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def get_description(cls):
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return "Extension for Firewall service"
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@classmethod
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def get_namespace(cls):
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return "http://wiki.openstack.org/Neutron/FWaaS/API_1.0"
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@classmethod
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def get_updated(cls):
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return "2013-02-25T10:00:00-00:00"
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@classmethod
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def get_resources(cls):
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my_plurals = []
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for plural in RESOURCE_ATTRIBUTE_MAP:
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if plural == 'firewall_policies':
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singular = 'firewall_policy'
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else:
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singular = plural[:-1]
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my_plurals.append((plural, singular))
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attr.PLURALS.update(dict(my_plurals))
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resources = []
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plugin = manager.NeutronManager.get_service_plugins()[
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constants.FIREWALL]
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for collection_name in RESOURCE_ATTRIBUTE_MAP:
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# Special handling needed for resources with 'y' ending
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if collection_name == 'firewall_policies':
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resource_name = 'firewall_policy'
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else:
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resource_name = collection_name[:-1]
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params = RESOURCE_ATTRIBUTE_MAP[collection_name]
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member_actions = {}
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if resource_name == 'firewall_policy':
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member_actions = {'insert_rule': 'PUT',
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'remove_rule': 'PUT'}
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controller = base.create_resource(
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collection_name, resource_name, plugin, params,
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member_actions=member_actions,
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allow_pagination=cfg.CONF.allow_pagination,
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allow_sorting=cfg.CONF.allow_sorting)
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resource = extensions.ResourceExtension(
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collection_name,
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controller,
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path_prefix=constants.COMMON_PREFIXES[constants.FIREWALL],
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member_actions=member_actions,
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attr_map=params)
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resources.append(resource)
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return resources
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@classmethod
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def get_plugin_interface(cls):
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return FirewallPluginBase
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def update_attributes_map(self, attributes):
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super(Firewall, self).update_attributes_map(
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attributes, extension_attrs_map=RESOURCE_ATTRIBUTE_MAP)
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def get_extended_resources(self, version):
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if version == "2.0":
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return RESOURCE_ATTRIBUTE_MAP
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else:
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return {}
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class FirewallPluginBase(ServicePluginBase):
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__metaclass__ = abc.ABCMeta
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def get_plugin_name(self):
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return constants.FIREWALL
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def get_plugin_type(self):
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return constants.FIREWALL
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def get_plugin_description(self):
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return 'Firewall service plugin'
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@abc.abstractmethod
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def get_firewalls(self, context, filters=None, fields=None):
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pass
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@abc.abstractmethod
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def get_firewall(self, context, id, fields=None):
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pass
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@abc.abstractmethod
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def create_firewall(self, context, firewall):
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pass
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@abc.abstractmethod
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def update_firewall(self, context, id, firewall):
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pass
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@abc.abstractmethod
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def delete_firewall(self, context, id):
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pass
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@abc.abstractmethod
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def get_firewall_rules(self, context, filters=None, fields=None):
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pass
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@abc.abstractmethod
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def get_firewall_rule(self, context, id, fields=None):
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pass
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@abc.abstractmethod
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def create_firewall_rule(self, context, firewall_rule):
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pass
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@abc.abstractmethod
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def update_firewall_rule(self, context, id, firewall_rule):
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pass
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@abc.abstractmethod
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def delete_firewall_rule(self, context, id):
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pass
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@abc.abstractmethod
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def get_firewall_policy(self, context, id, fields=None):
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pass
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@abc.abstractmethod
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def get_firewall_policies(self, context, filters=None, fields=None):
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pass
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@abc.abstractmethod
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def create_firewall_policy(self, context, firewall_policy):
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pass
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@abc.abstractmethod
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def update_firewall_policy(self, context, id, firewall_policy):
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pass
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@abc.abstractmethod
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def delete_firewall_policy(self, context, id):
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pass
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@abc.abstractmethod
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def insert_rule(self, context, id, rule_info):
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pass
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@abc.abstractmethod
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def remove_rule(self, context, id, rule_info):
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pass
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