# - Set the fail-mode on internal bridges.
import getopt
-import logging, logging.handlers
+import logging
+import logging.handlers
import os
import signal
import subprocess
import XenAPI
+import ovs.dirs
from ovs.db import error
from ovs.db import types
import ovs.util
import ovs.db.idl
s_log = logging.getLogger("ovs-xapi-sync")
-vsctl="/usr/bin/ovs-vsctl"
+vsctl = "/usr/bin/ovs-vsctl"
session = None
force_run = False
+
# Set up a session to interact with XAPI.
#
# On system start-up, OVS comes up before XAPI, so we can't log into the
return True
+
def get_network_by_bridge(br_name):
if not init_session():
s_log.warning("Failed to get bridge id %s because"
return None
+
# By default, the "bridge-id" external id in the Bridge table is the
# same as "xs-network-uuids". This may be overridden by defining a
# "nicira-bridge-id" key in the "other_config" field of the network
return rec['other_config'].get('nicira-bridge-id', default)
return None
+
# By default, the "iface-id" external id in the Interface table is the
# same as "xs-vif-uuid". This may be overridden by defining a
# "nicira-iface-id" key in the "other_config" field of the VIF
s_log.warning("Could not find XAPI entry for VIF %s" % if_name)
return xs_vif_uuid
+
def call_vsctl(args):
cmd = [vsctl, "--timeout=30", "-vANY:console:off"] + args
exitcode = subprocess.call(cmd)
if exitcode != 0:
s_log.warning("Couldn't call ovs-vsctl")
-def set_external_id(table, record, key, value):
- if value:
- col = 'external-ids:"%s"="%s"' % (key, value)
- call_vsctl(["set", table, record, col])
+
+def set_or_delete(d, key, value):
+ if value is None:
+ if key in d:
+ del d[key]
+ return True
else:
- call_vsctl(["remove", table, record, "external-ids", key])
+ if d.get(key) != value:
+ d[key] = value
+ return True
+ return False
+
+
+def set_external_id(row, key, value):
+ external_ids = row.external_ids
+ if set_or_delete(external_ids, key, value):
+ row.external_ids = external_ids
# XenServer does not call interface-reconfigure on internal networks,
# which is where the fail-mode would normally be set.
-def update_fail_mode(name):
- rec = get_network_by_bridge(name)
-
+def update_fail_mode(row):
+ rec = get_network_by_bridge(row.name)
if not rec:
return
pools = session.xenapi.pool.get_all()
if len(pools) == 1:
prec = session.xenapi.pool.get_record(pools[0])
- fail_mode = prec['other_config'].get('vswitch-controller-fail-mode')
+ fail_mode = prec['other_config'].get(
+ 'vswitch-controller-fail-mode')
if fail_mode not in ['standalone', 'secure']:
fail_mode = 'standalone'
- call_vsctl(["set", "bridge", name, "fail_mode=" + fail_mode])
+ if row.fail_mode != fail_mode:
+ row.fail_mode = fail_mode
-def update_in_band_mgmt(name):
- rec = get_network_by_bridge(name)
+def update_in_band_mgmt(row):
+ rec = get_network_by_bridge(row.name)
if not rec:
return
dib = rec['other_config'].get('vswitch-disable-in-band')
- if not dib:
- call_vsctl(['remove', 'bridge', name, 'other_config',
- 'disable-in-band'])
- elif dib in ['true', 'false']:
- call_vsctl(['set', 'bridge', name,
- 'other_config:disable-in-band=' + dib])
- else:
- s_log.warning('"' + dib + '"'
- "isn't a valid setting for other_config:disable-in-band on " +
- name)
-def update_bridge_id(name, ids):
- id = get_bridge_id(name, ids.get("xs-network-uuids"))
+ other_config = row.other_config
+ if dib and dib not in ['true', 'false']:
+ s_log.warning('"%s" isn\'t a valid setting for '
+ "other_config:disable-in-band on %s" % (dib, row.name))
+ elif set_or_delete(other_config, 'disable-in-band', dib):
+ row.other_config = other_config
- if not id:
- return
- primary_id = id.split(";")[0]
-
- if ids.get("bridge-id") != primary_id:
- set_external_id("Bridge", name, "bridge-id", primary_id)
- ids["bridge-id"] = primary_id
+def update_bridge_id(row):
+ id_ = get_bridge_id(row.name, row.external_ids.get("xs-network-uuids"))
+ if not id_:
+ return
-def update_iface(name, ids):
- id = get_iface_id(name, ids.get("xs-vif-uuid"))
- if ids.get("iface-id") != id and id:
- set_external_id("Interface", name, "iface-id", id)
- ids["iface-id"] = id
+ set_external_id(row, "bridge-id", id_.split(";")[0])
- status = ids.get("iface-status")
- if status:
- set_external_id("Interface", name, "iface-status", status)
-def keep_table_columns(schema, table_name, column_types):
+def keep_table_columns(schema, table_name, columns):
table = schema.tables.get(table_name)
if not table:
raise error.Error("schema has no %s table" % table_name)
new_columns = {}
- for column_name, column_type in column_types.iteritems():
+ for column_name in columns:
column = table.columns.get(column_name)
if not column:
raise error.Error("%s table schema lacks %s column"
% (table_name, column_name))
- if column.type != column_type:
- raise error.Error("%s column in %s table has type \"%s\", "
- "expected type \"%s\""
- % (column_name, table_name,
- column.type.toEnglish(),
- column_type.toEnglish()))
new_columns[column_name] = column
table.columns = new_columns
return table
-def monitor_uuid_schema_cb(schema):
- string_type = types.Type(types.BaseType(types.StringType))
- string_map_type = types.Type(types.BaseType(types.StringType),
- types.BaseType(types.StringType),
- 0, sys.maxint)
+def prune_schema(schema):
new_tables = {}
- for table_name in ("Bridge", "Interface"):
- new_tables[table_name] = keep_table_columns(
- schema, table_name, {"name": string_type,
- "external_ids": string_map_type})
+ new_tables["Bridge"] = keep_table_columns(
+ schema, "Bridge", ("name", "external_ids", "other_config",
+ "fail_mode"))
+ new_tables["Interface"] = keep_table_columns(
+ schema, "Interface", ("name", "external_ids"))
schema.tables = new_tables
+
def usage():
print "usage: %s [OPTIONS] DATABASE" % sys.argv[0]
print "where DATABASE is a socket on which ovsdb-server is listening."
print " -h, --help display this help message"
sys.exit(0)
-def handler(signum, frame):
+
+def handler(signum, _):
global force_run
if (signum == signal.SIGHUP):
force_run = True
-def update_tap_from_vif(idl, tap_name, vif_name):
- ifaces = idl.data["Interface"]
- tap = None
- vif = None
-
- for i in ifaces.values():
- name = i.name.as_scalar().strip('"')
- if name == tap_name:
- tap = i
- elif name == vif_name:
- vif = i
-
- if vif and tap:
- vxid = vif.external_ids
- txid = tap.external_ids
-
- keys = ["attached-mac", "xs-network-uuid", "xs-vif-uuid", "xs-vm-uuid"]
- for k in keys:
- if vxid.get(k) != txid.get(k):
- set_external_id("Interface", tap_name, k, vxid.get(k))
def main(argv):
global force_run
sys.exit(1)
remote = args[0]
- idl = ovs.db.idl.Idl(remote, "Open_vSwitch", monitor_uuid_schema_cb)
+ schema_file = "%s/vswitch.ovsschema" % ovs.dirs.PKGDATADIR
+ schema = ovs.db.schema.DbSchema.from_json(ovs.json.from_file(schema_file))
+ prune_schema(schema)
+ idl = ovs.db.idl.Idl(remote, schema)
ovs.daemon.daemonize()
signal.signal(signal.SIGHUP, handler)
- bridges = {}
- interfaces = {}
+ bridges = {} # Map from bridge name to xs_network_uuids
+ interfaces = {} # Map from interface name to xs-vif-uuid
while True:
if not force_run and not idl.run():
poller = ovs.poller.Poller()
if force_run:
s_log.info("Forced to re-run as the result of a SIGHUP")
- bridges = {}
+ bridges = {}
interfaces = {}
- force_run = False
+ force_run = False
+
+ txn = ovs.db.idl.Transaction(idl)
new_bridges = {}
- for rec in idl.data["Bridge"].itervalues():
- name = rec.name.as_scalar()
- xs_network_uuids = rec.external_ids.get("xs-network-uuids")
- bridge_id = rec.external_ids.get("bridge-id")
- new_bridges[name] = {"xs-network-uuids": xs_network_uuids,
- "bridge-id": bridge_id}
+ for row in idl.tables["Bridge"].rows.itervalues():
+ old_xnu = bridges.get(row.name)
+ new_xnu = row.external_ids.get("xs-network-uuids", "")
+ if old_xnu is None:
+ # New bridge.
+ update_fail_mode(row)
+ update_in_band_mgmt(row)
+ if new_xnu != old_xnu:
+ # New bridge or bridge's xs-network-uuids has changed.
+ update_bridge_id(row)
+ new_bridges[row.name] = new_xnu
+ bridges = new_bridges
+
+ iface_by_name = {}
+ for row in idl.tables["Interface"].rows.itervalues():
+ iface_by_name[row.name] = row
new_interfaces = {}
- for rec in idl.data["Interface"].itervalues():
- name = rec.name.as_scalar()
- xs_vif_uuid = rec.external_ids.get("xs-vif-uuid")
- iface_id = rec.external_ids.get("iface-id")
- new_interfaces[name] = {"xs-vif-uuid": xs_vif_uuid,
- "iface-id": iface_id}
-
- if name.startswith("vif"):
- new_interfaces[name]["iface-status"] = "active"
-
- #Tap devices take their xs-vif-uuid from their corresponding vif and
- #cause that vif to be labled inactive.
- for name in new_interfaces:
- if not name.startswith("tap"):
- continue
-
- vif = name.replace("tap", "vif", 1)
-
- if vif in new_interfaces:
- xs_vif_uuid = new_interfaces[vif]["xs-vif-uuid"]
- new_interfaces[name]["xs-vif-uuid"] = xs_vif_uuid
-
- new_interfaces[vif]["iface-status"] = "inactive"
- new_interfaces[name]["iface-status"] = "active"
-
- update_tap_from_vif(idl, name, vif)
-
- if bridges != new_bridges:
- for name,ids in new_bridges.items():
- if name not in bridges:
- update_fail_mode(name)
- update_in_band_mgmt(name)
-
- if (name not in bridges) or (bridges[name] != ids):
- update_bridge_id(name, ids)
-
- bridges = new_bridges
+ for row in idl.tables["Interface"].rows.itervalues():
+ # Match up paired vif and tap devices.
+ if row.name.startswith("vif"):
+ vif = row
+ tap = iface_by_name.get("tap%s" % row.name[3:])
+ elif row.name.startswith("tap"):
+ tap = row
+ vif = iface_by_name.get("vif%s" % row.name[3:])
+ else:
+ tap = vif = None
+
+ # Several tap external-ids need to be copied from the vif.
+ if row == tap and vif:
+ keys = ["attached-mac",
+ "xs-network-uuid",
+ "xs-vif-uuid",
+ "xs-vm-uuid"]
+ for k in keys:
+ set_external_id(row, k, vif.external_ids.get(k))
+
+ # If it's a new interface or its xs-vif-uuid has changed, then
+ # obtain the iface-id from XAPI.
+ #
+ # (A tap's xs-vif-uuid comes from its vif. That falls out
+ # naturally from the copy loop above.)
+ new_xvu = row.external_ids.get("xs-vif-uuid", "")
+ old_xvu = interfaces.get(row.name)
+ if old_xvu != new_xvu:
+ iface_id = get_iface_id(row.name, new_xvu)
+ if iface_id and row.external_ids.get("iface-id") != iface_id:
+ set_external_id(row, "iface-id", iface_id)
+
+ # When there's a vif and a tap, the tap is active (used for
+ # traffic). When there's just a vif, the vif is active.
+ #
+ # A tap on its own shouldn't happen, and we don't know
+ # anything about other kinds of devices, so we don't use
+ # an iface-status for those devices at all.
+ if vif and tap:
+ set_external_id(tap, "iface-status", "active")
+ set_external_id(vif, "iface-status", "inactive")
+ elif vif:
+ set_external_id(vif, "iface-status", "active")
+ else:
+ set_external_id(row, "iface-status", None)
+
+ new_interfaces[row.name] = new_xvu
+ interfaces = new_interfaces
+
+ txn.commit_block()
- if interfaces != new_interfaces:
- for name,ids in new_interfaces.items():
- if (name not in interfaces) or (interfaces[name] != ids):
- update_iface(name, ids)
- interfaces = new_interfaces
if __name__ == '__main__':
try:
git://git.onelab.eu / sliver-openvswitch.git / blobdiff