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# Copyright 2013 Mellanox Technologies, Ltd
#
# 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.
from networking_mlnx.eswitchd.common import constants
from oslo_serialization import jsonutils
import zmq
from networking_mlnx.eswitchd.cli import exceptions
from networking_mlnx.eswitchd.utils.helper_utils import set_conn_url
REQUEST_TIMEOUT = 50000
class ConnUtil(object):
def __init__(self):
transport = constants.SOCKET_OS_TRANSPORT
port = constants.SOCKET_OS_PORT
addr = constants.SOCKET_OS_ADDR
self.conn_url = set_conn_url(transport, addr, port)
def send_msg(self, msg):
context = zmq.Context()
socket = context.socket(zmq.REQ)
socket.setsockopt(zmq.LINGER, 0)
socket.connect(self.conn_url)
try:
socket.send(msg)
poller = zmq.Poller()
poller.register(socket, zmq.POLLIN)
conn = dict(poller.poll(REQUEST_TIMEOUT))
if conn:
if conn.get(socket) == zmq.POLLIN:
response_msg = socket.recv(zmq.NOBLOCK)
response = self.parse_response_msg(response_msg)
return response
else:
print('no result received')
finally:
socket.close()
context.term()
def parse_response_msg(self, recv_msg):
msg = jsonutils.loads(recv_msg)
error_msg = " "
if msg['status'] == 'OK':
if 'response' in msg:
return msg['response']
return
elif msg['status'] == 'FAIL':
error_msg = "Action %s failed: %s" % (msg['action'], msg['reason'])
else:
error_msg = "Unknown operation status %s" % msg['status']
raise exceptions.MlxException(error_msg)
def plug_nic(self, vnic_mac, device_id, fabric, vif_type, dev_name):
msg = jsonutils.dumps({'action': 'plug_nic',
'vnic_mac': vnic_mac,
'device_id': device_id,
'fabric': fabric,
'vnic_type': vif_type,
'dev_name': dev_name})
recv_msg = self.send_msg(msg)
try:
dev = recv_msg['dev']
except Exception:
error_msg = "Failed to plug_nic %s on %s" % (vnic_mac, fabric)
raise exceptions.MlxException(error_msg)
return dev
def deallocate_nic(self, vnic_mac, fabric):
msg = jsonutils.dumps({'action': 'delete_port',
'fabric': fabric,
'vnic_mac': vnic_mac})
recv_msg = self.send_msg(msg)
try:
dev = recv_msg['dev']
except Exception:
error_msg = "Failed to deallocate %s on %s" % (vnic_mac, fabric)
raise exceptions.MlxException(error_msg)
return dev
def get_tables(self, fabric):
msg = jsonutils.dumps({'action': 'get_eswitch_tables',
'fabric': fabric})
recv_msg = self.send_msg(msg)
tables = recv_msg['tables']
return tables
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