f69c40ebb4
Placing the _Lx markers back into the code. No other cleaner solution has has been implemented. Patches will be submitted in a series of sub directories and in a fashion that is manageable. Partial-Bug: #1384312 Change-Id: I3974b58bd9b8b9e3c34d5a609228e30c6a08a3c3
547 lines
22 KiB
Python
547 lines
22 KiB
Python
# (c) Copyright 2014 Brocade Communications Systems Inc.
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# All Rights Reserved.
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#
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# Copyright 2014 OpenStack Foundation
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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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"""
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Script to push the zone configuration to brocade SAN switches.
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"""
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import random
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import re
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from eventlet import greenthread
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from oslo.concurrency import processutils
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from oslo.utils import excutils
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from cinder import exception
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from cinder.i18n import _, _LE
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from cinder.openstack.common import log as logging
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from cinder import ssh_utils
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from cinder import utils
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import cinder.zonemanager.drivers.brocade.fc_zone_constants as ZoneConstant
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LOG = logging.getLogger(__name__)
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class BrcdFCZoneClientCLI(object):
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switch_ip = None
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switch_port = '22'
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switch_user = 'admin'
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switch_pwd = 'none'
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patrn = re.compile('[;\s]+')
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def __init__(self, ipaddress, username, password, port):
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"""initializing the client."""
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self.switch_ip = ipaddress
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self.switch_port = port
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self.switch_user = username
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self.switch_pwd = password
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self.sshpool = None
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def get_active_zone_set(self):
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"""Return the active zone configuration.
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Return active zoneset from fabric. When none of the configurations
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are active then it will return empty map.
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:returns: Map -- active zone set map in the following format
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{
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'zones':
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{'openstack50060b0000c26604201900051ee8e329':
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['50060b0000c26604', '201900051ee8e329']
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},
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'active_zone_config': 'OpenStack_Cfg'
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}
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"""
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zone_set = {}
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zone = {}
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zone_member = None
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zone_name = None
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switch_data = None
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zone_set_name = None
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try:
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switch_data = self._get_switch_info(
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[ZoneConstant.GET_ACTIVE_ZONE_CFG])
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except exception.BrocadeZoningCliException:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Failed getting active zone set "
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"from fabric %s"), self.switch_ip)
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try:
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for line in switch_data:
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line_split = re.split('\\t', line)
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if len(line_split) > 2:
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line_split = [x.replace(
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'\n', '') for x in line_split]
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line_split = [x.replace(
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' ',
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'') for x in line_split]
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if ZoneConstant.CFG_ZONESET in line_split:
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zone_set_name = line_split[1]
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continue
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if line_split[1]:
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zone_name = line_split[1]
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zone[zone_name] = list()
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if line_split[2]:
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zone_member = line_split[2]
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if zone_member:
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zone_member_list = zone.get(zone_name)
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zone_member_list.append(zone_member)
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zone_set[ZoneConstant.CFG_ZONES] = zone
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zone_set[ZoneConstant.ACTIVE_ZONE_CONFIG] = zone_set_name
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except Exception as ex:
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# Incase of parsing error here, it should be malformed cli output.
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msg = _("Malformed zone configuration: (switch=%(switch)s "
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"zone_config=%(zone_config)s)."
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) % {'switch': self.switch_ip,
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'zone_config': switch_data}
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LOG.error(msg)
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LOG.exception(ex)
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raise exception.FCZoneDriverException(reason=msg)
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switch_data = None
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return zone_set
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def add_zones(self, zones, activate, active_zone_set=None):
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"""Add zone configuration.
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This method will add the zone configuration passed by user.
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input params:
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zones - zone names mapped to members.
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zone members are colon separated but case-insensitive
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{ zonename1:[zonememeber1,zonemember2,...],
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zonename2:[zonemember1, zonemember2,...]...}
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e.g: {'openstack50060b0000c26604201900051ee8e329':
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['50:06:0b:00:00:c2:66:04', '20:19:00:05:1e:e8:e3:29']
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}
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activate - True/False
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active_zone_set - active zone set dict retrieved from
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get_active_zone_set method
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"""
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LOG.debug("Add Zones - Zones passed: %s", zones)
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cfg_name = None
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iterator_count = 0
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zone_with_sep = ''
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if not active_zone_set:
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active_zone_set = self.get_active_zone_set()
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LOG.debug("Active zone set:%s", active_zone_set)
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zone_list = active_zone_set[ZoneConstant.CFG_ZONES]
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LOG.debug("zone list:%s", zone_list)
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for zone in zones.keys():
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# if zone exists, its an update. Delete & insert
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# TODO(skolathur): This can be optimized to an update call later
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if (zone in zone_list):
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try:
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self.delete_zones(zone, activate, active_zone_set)
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except exception.BrocadeZoningCliException:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Deleting zone failed %s"), zone)
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LOG.debug("Deleted Zone before insert : %s", zone)
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zone_members_with_sep = ';'.join(str(member) for
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member in zones[zone])
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LOG.debug("Forming command for add zone")
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cmd = 'zonecreate "%(zone)s", "%(zone_members_with_sep)s"' % {
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'zone': zone,
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'zone_members_with_sep': zone_members_with_sep}
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LOG.debug("Adding zone, cmd to run %s", cmd)
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self.apply_zone_change(cmd.split())
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LOG.debug("Created zones on the switch")
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if(iterator_count > 0):
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zone_with_sep += ';'
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iterator_count += 1
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zone_with_sep += zone
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try:
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cfg_name = active_zone_set[ZoneConstant.ACTIVE_ZONE_CONFIG]
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cmd = None
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if not cfg_name:
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cfg_name = ZoneConstant.OPENSTACK_CFG_NAME
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cmd = 'cfgcreate "%(zoneset)s", "%(zones)s"' \
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% {'zoneset': cfg_name, 'zones': zone_with_sep}
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else:
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cmd = 'cfgadd "%(zoneset)s", "%(zones)s"' \
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% {'zoneset': cfg_name, 'zones': zone_with_sep}
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LOG.debug("New zone %s", cmd)
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self.apply_zone_change(cmd.split())
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if activate:
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self.activate_zoneset(cfg_name)
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else:
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self._cfg_save()
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except Exception as e:
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self._cfg_trans_abort()
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msg = _("Creating and activating zone set failed: "
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"(Zone set=%(cfg_name)s error=%(err)s)."
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) % {'cfg_name': cfg_name, 'err': e}
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LOG.error(msg)
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raise exception.BrocadeZoningCliException(reason=msg)
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def activate_zoneset(self, cfgname):
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"""Method to Activate the zone config. Param cfgname - ZonesetName."""
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cmd_list = [ZoneConstant.ACTIVATE_ZONESET, cfgname]
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return self._ssh_execute(cmd_list, True, 1)
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def deactivate_zoneset(self):
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"""Method to deActivate the zone config."""
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return self._ssh_execute([ZoneConstant.DEACTIVATE_ZONESET], True, 1)
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def delete_zones(self, zone_names, activate, active_zone_set=None):
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"""Delete zones from fabric.
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Method to delete the active zone config zones
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params zone_names: zoneNames separated by semicolon
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params activate: True/False
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params active_zone_set: the active zone set dict retrieved
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from get_active_zone_set method
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"""
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active_zoneset_name = None
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zone_list = []
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if not active_zone_set:
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active_zone_set = self.get_active_zone_set()
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active_zoneset_name = active_zone_set[
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ZoneConstant.ACTIVE_ZONE_CONFIG]
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zone_list = active_zone_set[ZoneConstant.CFG_ZONES]
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zones = self.patrn.split(''.join(zone_names))
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cmd = None
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try:
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if len(zones) == len(zone_list):
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self.deactivate_zoneset()
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cmd = 'cfgdelete "%(active_zoneset_name)s"' \
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% {'active_zoneset_name': active_zoneset_name}
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# Active zoneset is being deleted, hence reset activate flag
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activate = False
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else:
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cmd = 'cfgremove "%(active_zoneset_name)s", "%(zone_names)s"' \
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% {'active_zoneset_name': active_zoneset_name,
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'zone_names': zone_names
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}
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LOG.debug("Delete zones: Config cmd to run:%s", cmd)
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self.apply_zone_change(cmd.split())
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for zone in zones:
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self._zone_delete(zone)
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if activate:
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self.activate_zoneset(active_zoneset_name)
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else:
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self._cfg_save()
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except Exception as e:
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msg = _("Deleting zones failed: (command=%(cmd)s error=%(err)s)."
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) % {'cmd': cmd, 'err': e}
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LOG.error(msg)
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self._cfg_trans_abort()
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raise exception.BrocadeZoningCliException(reason=msg)
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def get_nameserver_info(self):
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"""Get name server data from fabric.
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This method will return the connected node port wwn list(local
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and remote) for the given switch fabric
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"""
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cli_output = None
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return_list = []
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try:
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cmd = '%(nsshow)s;%(nscamshow)s' % {
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'nsshow': ZoneConstant.NS_SHOW,
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'nscamshow': ZoneConstant.NS_CAM_SHOW}
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cli_output = self._get_switch_info([cmd])
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except exception.BrocadeZoningCliException:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Failed collecting nsshow "
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"info for fabric %s"), self.switch_ip)
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if (cli_output):
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return_list = self._parse_ns_output(cli_output)
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cli_output = None
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return return_list
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def _cfg_save(self):
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self._ssh_execute([ZoneConstant.CFG_SAVE], True, 1)
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def _zone_delete(self, zone_name):
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cmd = 'zonedelete "%(zone_name)s"' % {'zone_name': zone_name}
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self.apply_zone_change(cmd.split())
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def _cfg_trans_abort(self):
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is_abortable = self._is_trans_abortable()
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if(is_abortable):
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self.apply_zone_change([ZoneConstant.CFG_ZONE_TRANS_ABORT])
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def _is_trans_abortable(self):
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is_abortable = False
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stdout, stderr = None, None
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stdout, stderr = self._run_ssh(
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[ZoneConstant.CFG_SHOW_TRANS], True, 1)
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output = stdout.splitlines()
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is_abortable = False
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for line in output:
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if(ZoneConstant.TRANS_ABORTABLE in line):
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is_abortable = True
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break
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if stderr:
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msg = _("Error while checking transaction status: %s") % stderr
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raise exception.BrocadeZoningCliException(reason=msg)
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else:
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return is_abortable
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def apply_zone_change(self, cmd_list):
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"""Execute zoning cli with no status update.
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Executes CLI commands such as addZone where status return is
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not expected.
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"""
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stdout, stderr = None, None
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LOG.debug("Executing command via ssh: %s", cmd_list)
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stdout, stderr = self._run_ssh(cmd_list, True, 1)
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# no output expected, so output means there is an error
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if stdout:
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msg = _("Error while running zoning CLI: (command=%(cmd)s "
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"error=%(err)s).") % {'cmd': cmd_list, 'err': stdout}
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LOG.error(msg)
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self._cfg_trans_abort()
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raise exception.BrocadeZoningCliException(reason=msg)
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def is_supported_firmware(self):
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"""Check firmware version is v6.4 or higher.
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This API checks if the firmware version per the plug-in support level.
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This only checks major and minor version.
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"""
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cmd = ['version']
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firmware = 0
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try:
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stdout, stderr = self._execute_shell_cmd(cmd)
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if (stdout):
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for line in stdout:
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if 'Fabric OS: v' in line:
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LOG.debug("Firmware version string:%s", line)
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ver = line.split('Fabric OS: v')[1].split('.')
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if (ver):
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firmware = int(ver[0] + ver[1])
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return firmware > 63
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else:
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LOG.error(_LE("No CLI output for firmware version check"))
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return False
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except processutils.ProcessExecutionError as e:
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msg = _("Error while getting data via ssh: (command=%(cmd)s "
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"error=%(err)s).") % {'cmd': cmd, 'err': e}
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LOG.error(msg)
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raise exception.BrocadeZoningCliException(reason=msg)
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def _get_switch_info(self, cmd_list):
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stdout, stderr, sw_data = None, None, None
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try:
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stdout, stderr = self._run_ssh(cmd_list, True, 1)
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if (stdout):
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sw_data = stdout.splitlines()
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return sw_data
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except processutils.ProcessExecutionError as e:
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msg = _("Error while getting data via ssh: (command=%(cmd)s "
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"error=%(err)s).") % {'cmd': cmd_list,
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'err': e}
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LOG.error(msg)
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raise exception.BrocadeZoningCliException(reason=msg)
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def _parse_ns_output(self, switch_data):
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"""Parses name server data.
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Parses nameserver raw data and adds the device port wwns to the list
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:returns: List -- list of device port wwn from ns info
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"""
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return_list = []
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for line in switch_data:
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if not(" NL " in line or " N " in line):
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continue
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linesplit = line.split(';')
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if len(linesplit) > 2:
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node_port_wwn = linesplit[2]
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return_list.append(node_port_wwn)
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else:
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msg = _("Malformed nameserver string: %s") % line
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LOG.error(msg)
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raise exception.InvalidParameterValue(err=msg)
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return return_list
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def _run_ssh(self, cmd_list, check_exit_code=True, attempts=1):
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# TODO(skolathur): Need to implement ssh_injection check
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# currently, the check will fail for zonecreate command
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# as zone members are separated by ';'which is a danger char
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command = ' '. join(cmd_list)
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if not self.sshpool:
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self.sshpool = ssh_utils.SSHPool(self.switch_ip,
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self.switch_port,
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None,
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self.switch_user,
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self.switch_pwd,
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min_size=1,
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max_size=5)
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last_exception = None
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try:
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with self.sshpool.item() as ssh:
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while attempts > 0:
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attempts -= 1
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try:
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return processutils.ssh_execute(
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ssh,
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command,
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check_exit_code=check_exit_code)
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except Exception as e:
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LOG.error(e)
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last_exception = e
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greenthread.sleep(random.randint(20, 500) / 100.0)
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try:
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raise processutils.ProcessExecutionError(
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exit_code=last_exception.exit_code,
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stdout=last_exception.stdout,
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stderr=last_exception.stderr,
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cmd=last_exception.cmd)
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except AttributeError:
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raise processutils.ProcessExecutionError(
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exit_code=-1,
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stdout="",
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stderr="Error running SSH command",
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cmd=command)
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except Exception:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Error running SSH command: %s") % command)
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def _ssh_execute(self, cmd_list, check_exit_code=True, attempts=1):
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"""Execute cli with status update.
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Executes CLI commands such as cfgsave where status return is expected.
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"""
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utils.check_ssh_injection(cmd_list)
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command = ' '. join(cmd_list)
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if not self.sshpool:
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self.sshpool = ssh_utils.SSHPool(self.switch_ip,
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self.switch_port,
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None,
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self.switch_user,
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self.switch_pwd,
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min_size=1,
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max_size=5)
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stdin, stdout, stderr = None, None, None
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LOG.debug("Executing command via ssh: %s" % command)
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last_exception = None
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try:
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with self.sshpool.item() as ssh:
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while attempts > 0:
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attempts -= 1
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try:
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stdin, stdout, stderr = ssh.exec_command(command)
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greenthread.sleep(random.randint(20, 500) / 100.0)
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stdin.write("%s\n" % ZoneConstant.YES)
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channel = stdout.channel
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exit_status = channel.recv_exit_status()
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LOG.debug("Exit Status from ssh:%s", exit_status)
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# exit_status == -1 if no exit code was returned
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if exit_status != -1:
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LOG.debug('Result was %s' % exit_status)
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if check_exit_code and exit_status != 0:
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raise processutils.ProcessExecutionError(
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exit_code=exit_status,
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stdout=stdout,
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stderr=stderr,
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cmd=command)
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else:
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return True
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else:
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return True
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except Exception as e:
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LOG.error(e)
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last_exception = e
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greenthread.sleep(random.randint(20, 500) / 100.0)
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LOG.debug("Handling error case after "
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"SSH:%s", last_exception)
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try:
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raise processutils.ProcessExecutionError(
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exit_code=last_exception.exit_code,
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stdout=last_exception.stdout,
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stderr=last_exception.stderr,
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cmd=last_exception.cmd)
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except AttributeError:
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raise processutils.ProcessExecutionError(
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exit_code=-1,
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stdout="",
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stderr="Error running SSH command",
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cmd=command)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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LOG.error(_LE("Error executing command via ssh: %s"), e)
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|
finally:
|
|
if stdin:
|
|
stdin.flush()
|
|
stdin.close()
|
|
if stdout:
|
|
stdout.close()
|
|
if stderr:
|
|
stderr.close()
|
|
|
|
def _execute_shell_cmd(self, cmd):
|
|
"""Run command over shell for older firmware versions.
|
|
|
|
We invoke shell and issue the command and return the output.
|
|
This is primarily used for issuing read commands when we are not sure
|
|
if the firmware supports exec_command.
|
|
"""
|
|
utils.check_ssh_injection(cmd)
|
|
command = ' '. join(cmd)
|
|
stdout, stderr = None, None
|
|
if not self.sshpool:
|
|
self.sshpool = ssh_utils.SSHPool(self.switch_ip,
|
|
self.switch_port,
|
|
None,
|
|
self.switch_user,
|
|
self.switch_pwd,
|
|
min_size=1,
|
|
max_size=5)
|
|
with self.sshpool.item() as ssh:
|
|
LOG.debug('Running cmd (SSH): %s' % command)
|
|
channel = ssh.invoke_shell()
|
|
stdin_stream = channel.makefile('wb')
|
|
stdout_stream = channel.makefile('rb')
|
|
stderr_stream = channel.makefile('rb')
|
|
stdin_stream.write('''%s
|
|
exit
|
|
''' % command)
|
|
stdin_stream.flush()
|
|
stdout = stdout_stream.readlines()
|
|
stderr = stderr_stream.readlines()
|
|
stdin_stream.close()
|
|
stdout_stream.close()
|
|
stderr_stream.close()
|
|
|
|
exit_status = channel.recv_exit_status()
|
|
# exit_status == -1 if no exit code was returned
|
|
if exit_status != -1:
|
|
LOG.debug('Result was %s' % exit_status)
|
|
if exit_status != 0:
|
|
msg = "command %s failed" % command
|
|
LOG.debug(msg)
|
|
raise processutils.ProcessExecutionError(
|
|
exit_code=exit_status,
|
|
stdout=stdout,
|
|
stderr=stderr,
|
|
cmd=command)
|
|
try:
|
|
channel.close()
|
|
except Exception as e:
|
|
LOG.exception(e)
|
|
LOG.debug("_execute_cmd: stderr to return:%s" % stderr)
|
|
return (stdout, stderr)
|
|
|
|
def cleanup(self):
|
|
self.sshpool = None
|