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
|
# 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 functools
import socket
from ovs.db import idl
from ovs import socket_util
from ovs import stream
from ovsdbapp.backend.ovs_idl import connection
from ovsdbapp.backend.ovs_idl import idlutils
from ovsdbapp.backend.ovs_idl import vlog
from ovsdbapp.schema.open_vswitch import impl_idl
from vif_plug_ovs.ovsdb import api
REQUIRED_TABLES = ('Interface', 'Port', 'Bridge', 'Open_vSwitch', 'QoS')
def idl_factory(config):
conn = config.connection
schema_name = 'Open_vSwitch'
helper = idlutils.get_schema_helper(conn, schema_name)
for table in REQUIRED_TABLES:
helper.register_table(table)
return idl.Idl(conn, helper)
def api_factory(config):
conn = connection.Connection(
idl=idl_factory(config),
timeout=config.timeout)
return NeutronOvsdbIdl(conn)
class NeutronOvsdbIdl(impl_idl.OvsdbIdl, api.ImplAPI):
"""IDL interface for OVS database back-end
This class provides an OVSDB IDL (Open vSwitch Database Interface
Definition Language) interface to the OVS back-end.
"""
def __init__(self, conn):
vlog.use_python_logger()
super(NeutronOvsdbIdl, self).__init__(conn)
def _get_table_columns(self, table):
return list(self.tables[table].columns)
def has_table_column(self, table, column):
return column in self._get_table_columns(table)
# this is derived form https://review.opendev.org/c/openstack/neutron/+/794892
def add_keepalives(fn):
@functools.wraps(fn)
def _open(*args, **kwargs):
error, sock = fn(*args, **kwargs)
try:
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
except socket.error as e:
sock.close()
return socket_util.get_exception_errno(e), None
return error, sock
return _open
class NoProbesMixin:
@staticmethod
def needs_probes():
# If we are using keepalives, we can force probe_interval=0
return False
class TCPStream(stream.TCPStream, NoProbesMixin):
@classmethod
@add_keepalives
def _open(cls, suffix, dscp):
return super()._open(suffix, dscp)
class SSLStream(stream.SSLStream, NoProbesMixin):
@classmethod
@add_keepalives
def _open(cls, suffix, dscp):
return super()._open(suffix, dscp)
# Overwriting globals in a library is clearly a good idea
stream.Stream.register_method("tcp", TCPStream)
stream.Stream.register_method("ssl", SSLStream)
|
