ARIA multivim plugin initial checkin

Change-Id: I3a24ab6fc5ba54466bfecaf596a13b8907248ae8
Issue-id: SO-77
Signed-off-by: DeWayne Filppi <dewayne@gigaspaces.com>

1 files changed, 215 insertions, 0 deletions

diff --git a/aria/multivim-plugin/neutron_plugin/router.py b/aria/multivim-plugin/neutron_plugin/router.py
new file mode 100644
index 0000000000..1a2851e4bc
--- /dev/null
+++ b/aria/multivim-plugin/neutron_plugin/router.py
@@ -0,0 +1,215 @@
+#########
+# 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