722 lines
28 KiB
Python
Executable File
722 lines
28 KiB
Python
Executable File
#!/usr/bin/env python
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# 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 logging
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from optparse import OptionParser
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import shlex
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import signal
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import subprocess
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import sys
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import time
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import sqlalchemy
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from sqlalchemy.ext import sqlsoup
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from quantum.plugins.openvswitch.common import config
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logging.basicConfig()
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LOG = logging.getLogger(__name__)
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# Global constants.
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OP_STATUS_UP = "UP"
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OP_STATUS_DOWN = "DOWN"
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# A placeholder for dead vlans.
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DEAD_VLAN_TAG = "4095"
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# Default interval values
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DEFAULT_POLLING_INTERVAL = 2
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DEFAULT_RECONNECT_INTERVAL = 2
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# A class to represent a VIF (i.e., a port that has 'iface-id' and 'vif-mac'
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# attributes set).
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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=" + 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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def run_cmd(self, args):
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cmd = shlex.split(self.root_helper) + args
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LOG.debug("## running command: " + " ".join(cmd))
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
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retval = p.communicate()[0]
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if p.returncode == -(signal.SIGALRM):
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LOG.debug("## timeout running command: " + " ".join(cmd))
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return retval
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def run_vsctl(self, args):
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full_args = ["ovs-vsctl", "--timeout=2"] + args
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return self.run_cmd(full_args)
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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 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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return self.run_cmd(full_args)
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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 add_flow(self, **dict):
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if "actions" not in dict:
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raise Exception("must specify one or more actions")
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if "priority" not in dict:
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dict["priority"] = "0"
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flow_str = "priority=%s" % dict["priority"]
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if "match" in dict:
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flow_str += "," + dict["match"]
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flow_str += ",actions=%s" % (dict["actions"])
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self.run_ofctl("add-flow", [flow_str])
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def delete_flows(self, **dict):
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all_args = []
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if "priority" in dict:
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all_args.append("priority=%s" % dict["priority"])
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if "match" in dict:
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all_args.append(dict["match"])
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if "actions" in dict:
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all_args.append("actions=%s" % (dict["actions"]))
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flow_str = ",".join(all_args)
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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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str = self.run_vsctl(["get", table, record, column]).rstrip("\n\r")
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return self.db_str_to_map(str)
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def db_get_val(self, table, record, column):
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return self.run_vsctl(["get", table, record, column]).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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return res.split("\n")[0:-1]
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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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return self.run_cmd([
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"xe",
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"vif-param-get",
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"param-name=other-config",
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"param-key=nicira-iface-id",
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"uuid=%s" % xs_vif_uuid,
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]).strip()
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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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class LocalVLANMapping:
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def __init__(self, vlan, lsw_id, vif_ids=None):
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if vif_ids is None:
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vif_ids = []
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self.vlan = vlan
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self.lsw_id = lsw_id
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self.vif_ids = vif_ids
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def __str__(self):
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return "lv-id = %s ls-id = %s" % (self.vlan, self.lsw_id)
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class Port(object):
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'''class stores port data in an ORM-free way,
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so attributes are still available even if a
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row has been deleted.
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'''
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def __init__(self, p):
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self.uuid = p.uuid
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self.network_id = p.network_id
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self.interface_id = p.interface_id
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self.state = p.state
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self.op_status = p.op_status
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def __eq__(self, other):
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'''compare only fields that will cause us to re-wire
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'''
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try:
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return (self and other
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and self.interface_id == other.interface_id
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and self.state == other.state)
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except:
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return False
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def __ne__(self, other):
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return not self.__eq__(other)
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def __hash__(self):
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return hash(self.uuid)
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class OVSQuantumAgent(object):
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def __init__(self, integ_br, root_helper,
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polling_interval, reconnect_interval):
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self.root_helper = root_helper
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self.setup_integration_br(integ_br)
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self.polling_interval = polling_interval
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self.reconnect_interval = reconnect_interval
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def port_bound(self, port, vlan_id):
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self.int_br.set_db_attribute("Port", port.port_name,
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"tag", str(vlan_id))
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self.int_br.delete_flows(match="in_port=%s" % port.ofport)
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def port_unbound(self, port, still_exists):
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if still_exists:
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self.int_br.clear_db_attribute("Port", port.port_name, "tag")
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def setup_integration_br(self, integ_br):
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self.int_br = OVSBridge(integ_br, self.root_helper)
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self.int_br.remove_all_flows()
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# switch all traffic using L2 learning
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self.int_br.add_flow(priority=1, actions="normal")
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def daemon_loop(self, db_connection_url):
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'''Main processing loop for Non-Tunneling Agent.
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:param options: database information - in the event need to reconnect
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'''
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self.local_vlan_map = {}
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old_local_bindings = {}
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old_vif_ports = {}
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db_connected = False
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while True:
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if not db_connected:
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time.sleep(self.reconnect_interval)
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db = sqlsoup.SqlSoup(db_connection_url)
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db_connected = True
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LOG.info("Connecting to database \"%s\" on %s" %
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(db.engine.url.database, db.engine.url.host))
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all_bindings = {}
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try:
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ports = db.ports.all()
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except Exception as e:
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LOG.info("Unable to get port bindings! Exception: %s" % e)
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db_connected = False
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continue
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for port in ports:
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all_bindings[port.interface_id] = port
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vlan_bindings = {}
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try:
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vlan_binds = db.vlan_bindings.all()
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except Exception as e:
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LOG.info("Unable to get vlan bindings! Exception: %s" % e)
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db_connected = False
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continue
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for bind in vlan_binds:
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vlan_bindings[bind.network_id] = bind.vlan_id
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new_vif_ports = {}
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new_local_bindings = {}
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vif_ports = self.int_br.get_vif_ports()
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for p in vif_ports:
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new_vif_ports[p.vif_id] = p
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if p.vif_id in all_bindings:
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net_id = all_bindings[p.vif_id].network_id
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new_local_bindings[p.vif_id] = net_id
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else:
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# no binding, put him on the 'dead vlan'
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self.int_br.set_db_attribute("Port", p.port_name, "tag",
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DEAD_VLAN_TAG)
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self.int_br.add_flow(priority=2,
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match="in_port=%s" % p.ofport,
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actions="drop")
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old_b = old_local_bindings.get(p.vif_id, None)
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new_b = new_local_bindings.get(p.vif_id, None)
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if old_b != new_b:
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if old_b is not None:
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LOG.info("Removing binding to net-id = %s for %s"
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% (old_b, str(p)))
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self.port_unbound(p, True)
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if p.vif_id in all_bindings:
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all_bindings[p.vif_id].op_status = OP_STATUS_DOWN
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if new_b is not None:
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# If we don't have a binding we have to stick it on
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# the dead vlan
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net_id = all_bindings[p.vif_id].network_id
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vlan_id = vlan_bindings.get(net_id, DEAD_VLAN_TAG)
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self.port_bound(p, vlan_id)
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if p.vif_id in all_bindings:
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all_bindings[p.vif_id].op_status = OP_STATUS_UP
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LOG.info(("Adding binding to net-id = %s "
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"for %s on vlan %s") %
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(new_b, str(p), vlan_id))
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for vif_id in old_vif_ports:
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if vif_id not in new_vif_ports:
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LOG.info("Port Disappeared: %s" % vif_id)
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if vif_id in old_local_bindings:
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old_b = old_local_bindings[vif_id]
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self.port_unbound(old_vif_ports[vif_id], False)
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if vif_id in all_bindings:
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all_bindings[vif_id].op_status = OP_STATUS_DOWN
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old_vif_ports = new_vif_ports
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old_local_bindings = new_local_bindings
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try:
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db.commit()
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except Exception as e:
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LOG.info("Unable to commit to database! Exception: %s" % e)
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db.rollback()
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old_local_bindings = {}
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old_vif_ports = {}
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time.sleep(self.polling_interval)
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class OVSQuantumTunnelAgent(object):
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'''Implements OVS-based tunneling.
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Two local bridges are created: an integration bridge (defaults to 'br-int')
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and a tunneling bridge (defaults to 'br-tun').
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All VM VIFs are plugged into the integration bridge. VMs for a given tenant
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share a common "local" VLAN (i.e. not propagated externally). The VLAN id
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of this local VLAN is mapped to a Logical Switch (LS) identifier and is
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used to differentiate tenant traffic on inter-HV tunnels.
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A mesh of tunnels is created to other Hypervisors in the cloud. These
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tunnels originate and terminate on the tunneling bridge of each hypervisor.
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Port patching is done to connect local VLANs on the integration bridge
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to inter-hypervisor tunnels on the tunnel bridge.
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'''
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# Lower bound on available vlans.
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MIN_VLAN_TAG = 1
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# Upper bound on available vlans.
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MAX_VLAN_TAG = 4094
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def __init__(self, integ_br, tun_br, local_ip, root_helper,
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polling_interval, reconnect_interval):
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'''Constructor.
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:param integ_br: name of the integration bridge.
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:param tun_br: name of the tunnel bridge.
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:param local_ip: local IP address of this hypervisor.
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:param root_helper: utility to use when running shell cmds.
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:param polling_interval: interval (secs) to poll DB.
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:param reconnect_internal: retry interval (secs) on DB error.'''
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self.root_helper = root_helper
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self.available_local_vlans = set(
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xrange(OVSQuantumTunnelAgent.MIN_VLAN_TAG,
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OVSQuantumTunnelAgent.MAX_VLAN_TAG))
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self.setup_integration_br(integ_br)
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self.local_vlan_map = {}
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self.polling_interval = polling_interval
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self.reconnect_interval = reconnect_interval
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self.local_ip = local_ip
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self.tunnel_count = 0
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self.setup_tunnel_br(tun_br)
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def provision_local_vlan(self, net_uuid, lsw_id):
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'''Provisions a local VLAN.
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:param net_uuid: the uuid of the network associated with this vlan.
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:param lsw_id: the logical switch id of this vlan.'''
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if not self.available_local_vlans:
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raise Exception("No local VLANs available for ls-id = %s" % lsw_id)
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lvid = self.available_local_vlans.pop()
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LOG.info("Assigning %s as local vlan for net-id=%s" % (lvid, net_uuid))
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self.local_vlan_map[net_uuid] = LocalVLANMapping(lvid, lsw_id)
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# outbound
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self.tun_br.add_flow(priority=4, match="in_port=%s,dl_vlan=%s" %
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(self.patch_int_ofport, lvid),
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actions="strip_vlan,set_tunnel:%s,normal" %
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(lsw_id))
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# inbound
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self.tun_br.add_flow(priority=3, match="tun_id=%s" % lsw_id,
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actions="mod_vlan_vid:%s,output:%s" %
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(lvid, self.patch_int_ofport))
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def reclaim_local_vlan(self, net_uuid, lvm):
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'''Reclaim a local VLAN.
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:param net_uuid: the network uuid associated with this vlan.
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:param lvm: a LocalVLANMapping object that tracks (vlan, lsw_id,
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vif_ids) mapping.'''
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LOG.info("reclaming vlan = %s from net-id = %s" % (lvm.vlan, net_uuid))
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self.tun_br.delete_flows(match="tun_id=%s" % lvm.lsw_id)
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self.tun_br.delete_flows(match="dl_vlan=%s" % lvm.vlan)
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del self.local_vlan_map[net_uuid]
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self.available_local_vlans.add(lvm.vlan)
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def port_bound(self, port, net_uuid, lsw_id):
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'''Bind port to net_uuid/lsw_id.
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:param port: a VifPort object.
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:param net_uuid: the net_uuid this port is to be associated with.
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:param lsw_id: the logical switch this port is to be associated with.
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|
'''
|
|
if net_uuid not in self.local_vlan_map:
|
|
self.provision_local_vlan(net_uuid, lsw_id)
|
|
lvm = self.local_vlan_map[net_uuid]
|
|
lvm.vif_ids.append(port.vif_id)
|
|
|
|
self.int_br.set_db_attribute("Port", port.port_name, "tag",
|
|
str(lvm.vlan))
|
|
self.int_br.delete_flows(match="in_port=%s" % port.ofport)
|
|
|
|
def port_unbound(self, port, net_uuid):
|
|
'''Unbind port.
|
|
|
|
Removes corresponding local vlan mapping object if this is its last
|
|
VIF.
|
|
|
|
:param port: a VifPort object.
|
|
:param net_uuid: the net_uuid this port is associated with.'''
|
|
if net_uuid not in self.local_vlan_map:
|
|
LOG.info('port_unbound() net_uuid %s not in local_vlan_map' %
|
|
net_uuid)
|
|
return
|
|
lvm = self.local_vlan_map[net_uuid]
|
|
|
|
if port.vif_id in lvm.vif_ids:
|
|
lvm.vif_ids.remove(port.vif_id)
|
|
else:
|
|
LOG.info('port_unbound: vid_id %s not in list' % port.vif_id)
|
|
|
|
if not lvm.vif_ids:
|
|
self.reclaim_local_vlan(net_uuid, lvm)
|
|
|
|
def port_dead(self, port):
|
|
'''Once a port has no binding, put it on the "dead vlan".
|
|
|
|
:param port: a VifPort object.'''
|
|
self.int_br.set_db_attribute("Port", port.port_name, "tag",
|
|
DEAD_VLAN_TAG)
|
|
self.int_br.add_flow(priority=2,
|
|
match="in_port=%s" % port.ofport, actions="drop")
|
|
|
|
def setup_integration_br(self, integ_br):
|
|
'''Setup the integration bridge.
|
|
|
|
Create patch ports and remove all existing flows.
|
|
|
|
:param integ_br: the name of the integration bridge.'''
|
|
self.int_br = OVSBridge(integ_br, self.root_helper)
|
|
self.int_br.delete_port("patch-tun")
|
|
self.patch_tun_ofport = self.int_br.add_patch_port("patch-tun",
|
|
"patch-int")
|
|
self.int_br.remove_all_flows()
|
|
# switch all traffic using L2 learning
|
|
self.int_br.add_flow(priority=1, actions="normal")
|
|
|
|
def setup_tunnel_br(self, tun_br):
|
|
'''Setup the tunnel bridge.
|
|
|
|
Creates tunnel bridge, and links it to the integration bridge
|
|
using a patch port.
|
|
|
|
:param tun_br: the name of the tunnel bridge.'''
|
|
self.tun_br = OVSBridge(tun_br, self.root_helper)
|
|
self.tun_br.reset_bridge()
|
|
self.patch_int_ofport = self.tun_br.add_patch_port("patch-int",
|
|
"patch-tun")
|
|
self.tun_br.remove_all_flows()
|
|
self.tun_br.add_flow(priority=1, actions="drop")
|
|
|
|
def manage_tunnels(self, tunnel_ips, old_tunnel_ips, db):
|
|
if self.local_ip in tunnel_ips:
|
|
tunnel_ips.remove(self.local_ip)
|
|
else:
|
|
db.tunnel_ips.insert(ip_address=self.local_ip)
|
|
|
|
new_tunnel_ips = tunnel_ips - old_tunnel_ips
|
|
if new_tunnel_ips:
|
|
LOG.info("adding tunnels to: %s" % new_tunnel_ips)
|
|
for ip in new_tunnel_ips:
|
|
tun_name = "gre-" + str(self.tunnel_count)
|
|
self.tun_br.add_tunnel_port(tun_name, ip)
|
|
self.tunnel_count += 1
|
|
|
|
# adding new ports can void flows, so reset flows
|
|
self.tun_br.remove_all_flows()
|
|
self.tun_br.add_flow(priority=1, actions="drop")
|
|
for lv_ojb in self.local_vlan_map.values():
|
|
self.add_tun_br_flows_for_local_vlan(lv_obj)
|
|
|
|
def rollback_until_success(self, db):
|
|
while True:
|
|
time.sleep(self.reconnect_interval)
|
|
try:
|
|
db.rollback()
|
|
break
|
|
except:
|
|
LOG.exception("Problem connecting to database")
|
|
|
|
def daemon_loop(self, db_connection_url):
|
|
'''Main processing loop for Tunneling Agent.
|
|
|
|
:param options: database information - in the event need to reconnect
|
|
'''
|
|
old_local_bindings = {}
|
|
old_vif_ports = {}
|
|
old_tunnel_ips = set()
|
|
|
|
db = sqlsoup.SqlSoup(db_connection_url)
|
|
LOG.info("Connecting to database \"%s\" on %s" %
|
|
(db.engine.url.database, db.engine.url.host))
|
|
|
|
while True:
|
|
try:
|
|
all_bindings = dict((p.interface_id, Port(p))
|
|
for p in db.ports.all())
|
|
all_bindings_vif_port_ids = set(all_bindings)
|
|
lsw_id_bindings = dict((bind.network_id, bind.vlan_id)
|
|
for bind in db.vlan_bindings.all())
|
|
|
|
tunnel_ips = set(x.ip_address for x in db.tunnel_ips.all())
|
|
self.manage_tunnels(tunnel_ips, old_tunnel_ips, db)
|
|
|
|
# Get bindings from OVS bridge.
|
|
vif_ports = self.int_br.get_vif_ports()
|
|
new_vif_ports = dict([(p.vif_id, p) for p in vif_ports])
|
|
new_vif_ports_ids = set(new_vif_ports.keys())
|
|
|
|
old_vif_ports_ids = set(old_vif_ports.keys())
|
|
dead_vif_ports_ids = (new_vif_ports_ids -
|
|
all_bindings_vif_port_ids)
|
|
dead_vif_ports = [new_vif_ports[p] for p in dead_vif_ports_ids]
|
|
disappeared_vif_ports_ids = (old_vif_ports_ids -
|
|
new_vif_ports_ids)
|
|
new_local_bindings_ids = (all_bindings_vif_port_ids.
|
|
intersection(new_vif_ports_ids))
|
|
new_local_bindings = dict([(p, all_bindings.get(p))
|
|
for p in new_vif_ports_ids])
|
|
new_bindings = set(
|
|
(p, old_local_bindings.get(p),
|
|
new_local_bindings.get(p)) for p in new_vif_ports_ids)
|
|
changed_bindings = set([b for b in new_bindings
|
|
if b[2] != b[1]])
|
|
|
|
LOG.debug('all_bindings: %s', all_bindings)
|
|
LOG.debug('lsw_id_bindings: %s', lsw_id_bindings)
|
|
LOG.debug('new_vif_ports_ids: %s', new_vif_ports_ids)
|
|
LOG.debug('dead_vif_ports_ids: %s', dead_vif_ports_ids)
|
|
LOG.debug('old_vif_ports_ids: %s', old_vif_ports_ids)
|
|
LOG.debug('new_local_bindings_ids: %s',
|
|
new_local_bindings_ids)
|
|
LOG.debug('new_local_bindings: %s', new_local_bindings)
|
|
LOG.debug('new_bindings: %s', new_bindings)
|
|
LOG.debug('changed_bindings: %s', changed_bindings)
|
|
|
|
# Take action.
|
|
for p in dead_vif_ports:
|
|
LOG.info("No quantum binding for port " + str(p)
|
|
+ "putting on dead vlan")
|
|
self.port_dead(p)
|
|
|
|
for b in changed_bindings:
|
|
port_id, old_port, new_port = b
|
|
p = new_vif_ports[port_id]
|
|
if old_port:
|
|
old_net_uuid = old_port.network_id
|
|
LOG.info("Removing binding to net-id = " +
|
|
old_net_uuid + " for " + str(p)
|
|
+ " added to dead vlan")
|
|
self.port_unbound(p, old_net_uuid)
|
|
all_bindings[p.vif_id].op_status = OP_STATUS_DOWN
|
|
if not new_port:
|
|
self.port_dead(p)
|
|
|
|
if new_port:
|
|
new_net_uuid = new_port.network_id
|
|
if new_net_uuid not in lsw_id_bindings:
|
|
LOG.warn("No ls-id binding found for net-id '%s'" %
|
|
new_net_uuid)
|
|
continue
|
|
|
|
lsw_id = lsw_id_bindings[new_net_uuid]
|
|
self.port_bound(p, new_net_uuid, lsw_id)
|
|
all_bindings[p.vif_id].op_status = OP_STATUS_UP
|
|
LOG.info("Port " + str(p) + " on net-id = "
|
|
+ new_net_uuid + " bound to " +
|
|
str(self.local_vlan_map[new_net_uuid]))
|
|
|
|
for vif_id in disappeared_vif_ports_ids:
|
|
LOG.info("Port Disappeared: " + vif_id)
|
|
if vif_id in all_bindings:
|
|
all_bindings[vif_id].op_status = OP_STATUS_DOWN
|
|
old_port = old_local_bindings.get(vif_id)
|
|
if old_port:
|
|
self.port_unbound(old_vif_ports[vif_id],
|
|
old_port.network_id)
|
|
# commit any DB changes and expire
|
|
# data loaded from the database
|
|
db.commit()
|
|
|
|
# sleep and re-initialize state for next pass
|
|
time.sleep(self.polling_interval)
|
|
old_tunnel_ips = tunnel_ips
|
|
old_vif_ports = new_vif_ports
|
|
old_local_bindings = new_local_bindings
|
|
|
|
except:
|
|
LOG.exception("Main-loop Exception:")
|
|
self.rollback_until_success(db)
|
|
|
|
|
|
def main():
|
|
usagestr = "%prog [OPTIONS] <config file>"
|
|
parser = OptionParser(usage=usagestr)
|
|
parser.add_option("-v", "--verbose", dest="verbose",
|
|
action="store_true", default=False, help="turn on verbose logging")
|
|
|
|
options, args = parser.parse_args()
|
|
|
|
if options.verbose:
|
|
LOG.setLevel(logging.DEBUG)
|
|
else:
|
|
LOG.setLevel(logging.WARNING)
|
|
|
|
if len(args) != 1:
|
|
parser.print_help()
|
|
sys.exit(1)
|
|
|
|
config_file = args[0]
|
|
conf = config.parse(config_file)
|
|
|
|
# Determine which agent type to use.
|
|
enable_tunneling = conf.OVS.enable_tunneling
|
|
integ_br = conf.OVS.integration_bridge
|
|
db_connection_url = conf.DATABASE.sql_connection
|
|
polling_interval = conf.AGENT.polling_interval
|
|
reconnect_interval = conf.DATABASE.reconnect_interval
|
|
root_helper = conf.AGENT.root_helper
|
|
|
|
if enable_tunneling:
|
|
# Get parameters for OVSQuantumTunnelAgent
|
|
tun_br = conf.OVS.tunnel_bridge
|
|
# Mandatory parameter.
|
|
local_ip = conf.OVS.local_ip
|
|
plugin = OVSQuantumTunnelAgent(integ_br, tun_br, local_ip, root_helper,
|
|
polling_interval, reconnect_interval)
|
|
else:
|
|
# Get parameters for OVSQuantumAgent.
|
|
plugin = OVSQuantumAgent(integ_br, root_helper,
|
|
polling_interval, reconnect_interval)
|
|
|
|
# Start everything.
|
|
plugin.daemon_loop(db_connection_url)
|
|
|
|
sys.exit(0)
|
|
|
|
if __name__ == "__main__":
|
|
main()
|