aaf0fef1ca
Bug #1073194 We use openstack common log to do logging. At the same time, we will use quantum logger as our top logger, so that all sub loggers will be set according to quantum.conf Change-Id: I5adf72e6031ad437e05c3521864a83757b3e7887
279 lines
11 KiB
Python
279 lines
11 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Nicira Networks, Inc.
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# All Rights Reserved.
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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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# @author: Somik Behera, Nicira Networks, Inc.
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# @author: Brad Hall, Nicira Networks, Inc.
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# @author: Dan Wendlandt, Nicira Networks, Inc.
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# @author: Dave Lapsley, Nicira Networks, Inc.
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import re
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from quantum.agent.linux import utils
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from quantum.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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class VifPort:
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def __init__(self, port_name, ofport, vif_id, vif_mac, switch):
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self.port_name = port_name
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self.ofport = ofport
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self.vif_id = vif_id
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self.vif_mac = vif_mac
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self.switch = switch
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def __str__(self):
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return ("iface-id=" + self.vif_id + ", vif_mac=" +
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self.vif_mac + ", port_name=" + self.port_name +
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", ofport=" + str(self.ofport) + ", bridge_name =" +
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self.switch.br_name)
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class OVSBridge:
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def __init__(self, br_name, root_helper):
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self.br_name = br_name
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self.root_helper = root_helper
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self.re_id = self.re_compile_id()
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def re_compile_id(self):
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external = 'external_ids\s*'
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mac = 'attached-mac="(?P<vif_mac>([a-fA-F\d]{2}:){5}([a-fA-F\d]{2}))"'
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iface = 'iface-id="(?P<vif_id>[^"]+)"'
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name = 'name\s*:\s"(?P<port_name>[^"]*)"'
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port = 'ofport\s*:\s(?P<ofport>-?\d+)'
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_re = ('%(external)s:\s{ ( %(mac)s,? | %(iface)s,? | . )* }'
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' \s+ %(name)s \s+ %(port)s' % locals())
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return re.compile(_re, re.M | re.X)
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def run_vsctl(self, args):
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full_args = ["ovs-vsctl", "--timeout=2"] + args
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try:
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return utils.execute(full_args, root_helper=self.root_helper)
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except Exception, e:
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LOG.error("Unable to execute %s. Exception: %s", full_args, e)
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def reset_bridge(self):
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self.run_vsctl(["--", "--if-exists", "del-br", self.br_name])
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self.run_vsctl(["add-br", self.br_name])
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def add_port(self, port_name):
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self.run_vsctl(["--", "--may-exist", "add-port", self.br_name,
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port_name])
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return self.get_port_ofport(port_name)
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def delete_port(self, port_name):
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self.run_vsctl(["--", "--if-exists", "del-port", self.br_name,
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port_name])
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def set_db_attribute(self, table_name, record, column, value):
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args = ["set", table_name, record, "%s=%s" % (column, value)]
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self.run_vsctl(args)
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def clear_db_attribute(self, table_name, record, column):
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args = ["clear", table_name, record, column]
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self.run_vsctl(args)
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def run_ofctl(self, cmd, args):
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full_args = ["ovs-ofctl", cmd, self.br_name] + args
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try:
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return utils.execute(full_args, root_helper=self.root_helper)
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except Exception, e:
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LOG.error("Unable to execute %s. Exception: %s", full_args, e)
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def count_flows(self):
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flow_list = self.run_ofctl("dump-flows", []).split("\n")[1:]
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return len(flow_list) - 1
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def remove_all_flows(self):
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self.run_ofctl("del-flows", [])
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def get_port_ofport(self, port_name):
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return self.db_get_val("Interface", port_name, "ofport")
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def get_datapath_id(self):
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return self.db_get_val('Bridge',
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self.br_name, 'datapath_id').strip('"')
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def _build_flow_expr_arr(self, **kwargs):
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flow_expr_arr = []
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is_delete_expr = kwargs.get('delete', False)
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if not is_delete_expr:
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prefix = ("hard_timeout=%s,idle_timeout=%s,priority=%s" %
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(kwargs.get('hard_timeout', '0'),
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kwargs.get('idle_timeout', '0'),
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kwargs.get('priority', '1')))
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flow_expr_arr.append(prefix)
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elif 'priority' in kwargs:
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raise Exception("Cannot match priority on flow deletion")
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in_port = ('in_port' in kwargs and ",in_port=%s" %
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kwargs['in_port'] or '')
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dl_type = ('dl_type' in kwargs and ",dl_type=%s" %
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kwargs['dl_type'] or '')
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dl_vlan = ('dl_vlan' in kwargs and ",dl_vlan=%s" %
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kwargs['dl_vlan'] or '')
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dl_src = 'dl_src' in kwargs and ",dl_src=%s" % kwargs['dl_src'] or ''
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dl_dst = 'dl_dst' in kwargs and ",dl_dst=%s" % kwargs['dl_dst'] or ''
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nw_src = 'nw_src' in kwargs and ",nw_src=%s" % kwargs['nw_src'] or ''
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nw_dst = 'nw_dst' in kwargs and ",nw_dst=%s" % kwargs['nw_dst'] or ''
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tun_id = 'tun_id' in kwargs and ",tun_id=%s" % kwargs['tun_id'] or ''
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proto = 'proto' in kwargs and ",%s" % kwargs['proto'] or ''
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ip = ('nw_src' in kwargs or 'nw_dst' in kwargs) and ',ip' or ''
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match = (in_port + dl_type + dl_vlan + dl_src + dl_dst +
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(ip or proto) + nw_src + nw_dst + tun_id)
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if match:
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match = match[1:] # strip leading comma
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flow_expr_arr.append(match)
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return flow_expr_arr
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def add_flow(self, **kwargs):
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if "actions" not in kwargs:
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raise Exception("must specify one or more actions")
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if "priority" not in kwargs:
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kwargs["priority"] = "0"
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flow_expr_arr = self._build_flow_expr_arr(**kwargs)
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flow_expr_arr.append("actions=%s" % (kwargs["actions"]))
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flow_str = ",".join(flow_expr_arr)
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self.run_ofctl("add-flow", [flow_str])
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def delete_flows(self, **kwargs):
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kwargs['delete'] = True
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flow_expr_arr = self._build_flow_expr_arr(**kwargs)
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if "actions" in kwargs:
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flow_expr_arr.append("actions=%s" % (kwargs["actions"]))
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flow_str = ",".join(flow_expr_arr)
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self.run_ofctl("del-flows", [flow_str])
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def add_tunnel_port(self, port_name, remote_ip):
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self.run_vsctl(["add-port", self.br_name, port_name])
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self.set_db_attribute("Interface", port_name, "type", "gre")
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self.set_db_attribute("Interface", port_name, "options:remote_ip",
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remote_ip)
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self.set_db_attribute("Interface", port_name, "options:in_key", "flow")
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self.set_db_attribute("Interface", port_name, "options:out_key",
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"flow")
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return self.get_port_ofport(port_name)
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def add_patch_port(self, local_name, remote_name):
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self.run_vsctl(["add-port", self.br_name, local_name])
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self.set_db_attribute("Interface", local_name, "type", "patch")
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self.set_db_attribute("Interface", local_name, "options:peer",
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remote_name)
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return self.get_port_ofport(local_name)
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def db_get_map(self, table, record, column):
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output = self.run_vsctl(["get", table, record, column])
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if output:
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str = output.rstrip("\n\r")
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return self.db_str_to_map(str)
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return {}
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def db_get_val(self, table, record, column):
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output = self.run_vsctl(["get", table, record, column])
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if output:
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return output.rstrip("\n\r")
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def db_str_to_map(self, full_str):
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list = full_str.strip("{}").split(", ")
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ret = {}
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for e in list:
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if e.find("=") == -1:
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continue
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arr = e.split("=")
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ret[arr[0]] = arr[1].strip("\"")
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return ret
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def get_port_name_list(self):
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res = self.run_vsctl(["list-ports", self.br_name])
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if res:
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return res.strip().split("\n")
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return []
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def get_port_stats(self, port_name):
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return self.db_get_map("Interface", port_name, "statistics")
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def get_xapi_iface_id(self, xs_vif_uuid):
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args = ["xe", "vif-param-get", "param-name=other-config",
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"param-key=nicira-iface-id", "uuid=%s" % xs_vif_uuid]
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try:
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return utils.execute(args, root_helper=self.root_helper).strip()
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except Exception, e:
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LOG.error("Unable to execute %s. Exception: %s", args, e)
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# returns a VIF object for each VIF port
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def get_vif_ports(self):
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edge_ports = []
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port_names = self.get_port_name_list()
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for name in port_names:
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external_ids = self.db_get_map("Interface", name, "external_ids")
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ofport = self.db_get_val("Interface", name, "ofport")
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if "iface-id" in external_ids and "attached-mac" in external_ids:
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p = VifPort(name, ofport, external_ids["iface-id"],
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external_ids["attached-mac"], self)
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edge_ports.append(p)
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elif ("xs-vif-uuid" in external_ids and
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"attached-mac" in external_ids):
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# if this is a xenserver and iface-id is not automatically
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# synced to OVS from XAPI, we grab it from XAPI directly
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iface_id = self.get_xapi_iface_id(external_ids["xs-vif-uuid"])
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p = VifPort(name, ofport, iface_id,
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external_ids["attached-mac"], self)
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edge_ports.append(p)
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return edge_ports
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def get_vif_port_set(self):
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edge_ports = set()
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port_names = self.get_port_name_list()
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for name in port_names:
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external_ids = self.db_get_map("Interface", name, "external_ids")
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if "iface-id" in external_ids and "attached-mac" in external_ids:
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edge_ports.add(external_ids['iface-id'])
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elif ("xs-vif-uuid" in external_ids and
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"attached-mac" in external_ids):
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# if this is a xenserver and iface-id is not automatically
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# synced to OVS from XAPI, we grab it from XAPI directly
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iface_id = self.get_xapi_iface_id(external_ids["xs-vif-uuid"])
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edge_ports.add(iface_id)
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return edge_ports
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def get_vif_port_by_id(self, port_id):
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args = ['--', '--columns=external_ids,name,ofport',
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'find', 'Interface',
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'external_ids:iface-id="%s"' % port_id]
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result = self.run_vsctl(args)
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if not result:
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return
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match = self.re_id.search(result)
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try:
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vif_mac = match.group('vif_mac')
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vif_id = match.group('vif_id')
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port_name = match.group('port_name')
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ofport = int(match.group('ofport'))
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return VifPort(port_name, ofport, vif_id, vif_mac, self)
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except Exception, e:
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LOG.info("Unable to parse regex results. Exception: %s", e)
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return
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def get_bridge_for_iface(root_helper, iface):
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args = ["ovs-vsctl", "--timeout=2", "iface-to-br", iface]
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try:
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return utils.execute(args, root_helper=root_helper).strip()
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except Exception, e:
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LOG.error(_("iface %s not found. Exception: %s"), iface, e)
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return None
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