summaryrefslogtreecommitdiffstats
path: root/aria/multivim-plugin/neutron_plugin/router.py
blob: 1a2851e4bc4456074e217983538fb138dfee8ab3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
#########
# Copyright (c) 2014 GigaSpaces Technologies Ltd. All rights reserved
#
# 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 warnings

from cloudify import ctx
from cloudify.decorators import operation
from cloudify.exceptions import NonRecoverableError

from openstack_plugin_common import (
    provider,
    transform_resource_name,
    get_resource_id,
    with_neutron_client,
    use_external_resource,
    is_external_relationship,
    is_external_relationship_not_conditionally_created,
    delete_runtime_properties,
    get_openstack_ids_of_connected_nodes_by_openstack_type,
    delete_resource_and_runtime_properties,
    get_resource_by_name_or_id,
    validate_resource,
    COMMON_RUNTIME_PROPERTIES_KEYS,
    OPENSTACK_ID_PROPERTY,
    OPENSTACK_TYPE_PROPERTY,
    OPENSTACK_NAME_PROPERTY
)

from neutron_plugin.network import NETWORK_OPENSTACK_TYPE


ROUTER_OPENSTACK_TYPE = 'router'

# Runtime properties
RUNTIME_PROPERTIES_KEYS = COMMON_RUNTIME_PROPERTIES_KEYS


@operation
@with_neutron_client
def create(neutron_client, args, **kwargs):

    if use_external_resource(ctx, neutron_client, ROUTER_OPENSTACK_TYPE):
        try:
            ext_net_id_by_rel = _get_connected_ext_net_id(neutron_client)

            if ext_net_id_by_rel:
                router_id = \
                    ctx.instance.runtime_properties[OPENSTACK_ID_PROPERTY]

                router = neutron_client.show_router(router_id)['router']
                if not (router['external_gateway_info'] and 'network_id' in
                        router['external_gateway_info'] and
                        router['external_gateway_info']['network_id'] ==
                        ext_net_id_by_rel):
                    raise NonRecoverableError(
                        'Expected external resources router {0} and '
                        'external network {1} to be connected'.format(
                            router_id, ext_net_id_by_rel))
            return
        except Exception:
            delete_runtime_properties(ctx, RUNTIME_PROPERTIES_KEYS)
            raise

    router = {
        'name': get_resource_id(ctx, ROUTER_OPENSTACK_TYPE),
    }
    router.update(ctx.node.properties['router'], **args)
    transform_resource_name(ctx, router)

    _handle_external_network_config(router, neutron_client)

    r = neutron_client.create_router({'router': router})['router']

    ctx.instance.runtime_properties[OPENSTACK_ID_PROPERTY] = r['id']
    ctx.instance.runtime_properties[OPENSTACK_TYPE_PROPERTY] =\
        ROUTER_OPENSTACK_TYPE
    ctx.instance.runtime_properties[OPENSTACK_NAME_PROPERTY] = r['name']


@operation
@with_neutron_client
def connect_subnet(neutron_client, **kwargs):
    router_id = ctx.target.instance.runtime_properties[OPENSTACK_ID_PROPERTY]
    subnet_id = ctx.source.instance.runtime_properties[OPENSTACK_ID_PROPERTY]

    if is_external_relationship_not_conditionally_created(ctx):
        ctx.logger.info('Validating external subnet and router '
                        'are associated')
        for port in neutron_client.list_ports(device_id=router_id)['ports']:
            for fixed_ip in port.get('fixed_ips', []):
                if fixed_ip.get('subnet_id') == subnet_id:
                    return
        raise NonRecoverableError(
            'Expected external resources router {0} and subnet {1} to be '
            'connected'.format(router_id, subnet_id))

    neutron_client.add_interface_router(router_id, {'subnet_id': subnet_id})


@operation
@with_neutron_client
def disconnect_subnet(neutron_client, **kwargs):
    if is_external_relationship(ctx):
        ctx.logger.info('Not connecting subnet and router since external '
                        'subnet and router are being used')
        return

    neutron_client.remove_interface_router(
        ctx.target.instance.runtime_properties[OPENSTACK_ID_PROPERTY], {
            'subnet_id': ctx.source.instance.runtime_properties[
                OPENSTACK_ID_PROPERTY]
        }
    )


@operation
@with_neutron_client
def delete(neutron_client, **kwargs):
    delete_resource_and_runtime_properties(ctx, neutron_client,
                                           RUNTIME_PROPERTIES_KEYS)


@operation
@with_neutron_client
def creation_validation(neutron_client, **kwargs):
    validate_resource(ctx, neutron_client, ROUTER_OPENSTACK_TYPE)


def _insert_ext_net_id_to_router_config(ext_net_id, router):
    router['external_gateway_info'] = router.get(
        'external_gateway_info', {})
    router['external_gateway_info']['network_id'] = ext_net_id


def _handle_external_network_config(router, neutron_client):
    # attempting to find an external network for the router to connect to -
    # first by either a network name or id passed in explicitly; then by a
    # network connected by a relationship; with a final optional fallback to an
    # external network set in the Provider-context. Otherwise the router will
    # simply not get connected to an external network

    provider_context = provider(ctx)

    ext_net_id_by_rel = _get_connected_ext_net_id(neutron_client)
    ext_net_by_property = ctx.node.properties['external_network']

    # the following is meant for backwards compatibility with the
    # 'network_name' sugaring
    if 'external_gateway_info' in router and 'network_name' in \
            router['external_gateway_info']:
        warnings.warn(
            'Passing external "network_name" inside the '
            'external_gateway_info key of the "router" property is now '
            'deprecated; Use the "external_network" property instead',
            DeprecationWarning)

        ext_net_by_property = router['external_gateway_info']['network_name']
        del (router['external_gateway_info']['network_name'])

    # need to check if the user explicitly passed network_id in the external
    # gateway configuration as it affects external network behavior by
    # relationship and/or provider context
    if 'external_gateway_info' in router and 'network_id' in \
            router['external_gateway_info']:
        ext_net_by_property = router['external_gateway_info']['network_name']

    if ext_net_by_property and ext_net_id_by_rel:
        raise RuntimeError(
            "Router can't have an external network connected by both a "
            'relationship and by a network name/id')

    if ext_net_by_property:
        ext_net_id = get_resource_by_name_or_id(
            ext_net_by_property, NETWORK_OPENSTACK_TYPE, neutron_client)['id']
        _insert_ext_net_id_to_router_config(ext_net_id, router)
    elif ext_net_id_by_rel:
        _insert_ext_net_id_to_router_config(ext_net_id_by_rel, router)
    elif ctx.node.properties['default_to_managers_external_network'] and \
            provider_context.ext_network:
        _insert_ext_net_id_to_router_config(provider_context.ext_network['id'],
                                            router)


def _check_if_network_is_external(neutron_client, network_id):
    return neutron_client.show_network(
        network_id)['network']['router:external']


def _get_connected_ext_net_id(neutron_client):
    ext_net_ids = \
        [net_id
            for net_id in
            get_openstack_ids_of_connected_nodes_by_openstack_type(
                ctx, NETWORK_OPENSTACK_TYPE) if
            _check_if_network_is_external(neutron_client, net_id)]

    if len(ext_net_ids) > 1:
        raise NonRecoverableError(
            'More than one external network is connected to router {0}'
            ' by a relationship; External network IDs: {0}'.format(
                ext_net_ids))

    return ext_net_ids[0] if ext_net_ids else None