def resolve_conflicts(tx, isl):
logger.info('Check ISL %s for conflicts', isl)
involved = [fetch(tx, isl), fetch(tx, isl.reversed())]
keep_dbid = {db.neo_id(x) for x in involved}
involved.extend(fetch_by_endpoint(tx, isl.source))
involved.extend(fetch_by_endpoint(tx, isl.dest))
_lock_affected_switches(tx, involved)
for link in involved:
link_dbid = db.neo_id(link)
if link_dbid in keep_dbid:
continue
link_isl = model.InterSwitchLink.new_from_db(link)
if is_active_status(link['actual']):
logger.error(
'Detected ISL %s conflict with %s. Please contact dev team',
link_isl, isl)
# set_active_field(tx, link_dbid, 'inactive')
# update_status(tx, link_isl)
else:
logger.debug(
"Skip conflict ISL %s deactivation due to its current status - %s",
link_isl, link['actual'])
def switch_unplug(tx, dpid):
logging.info("Deactivate all ISL to/from %s", dpid)
for db_link in fetch_by_datapath(tx, dpid):
source = model.NetworkEndpoint(db_link['src_switch'],
db_link['src_port'])
dest = model.NetworkEndpoint(db_link['dst_switch'],
db_link['dst_port'])
isl = model.InterSwitchLink(source, dest, db_link['actual'])
logging.debug("Found ISL: %s", isl)
set_active_field(tx, db.neo_id(db_link), 'inactive')
update_status(tx, isl)
def set_props(tx, isl, props):
target = fetch(tx, isl)
origin, update = db.locate_changes(target, props)
if update:
q = textwrap.dedent("""
MATCH (:switch)-[target:isl]->(:switch)
WHERE id(target)=$target_id
""") + db.format_set_fields(db.escape_fields(update),
field_prefix='target.')
logger.debug('Push ISL properties: %r', update)
tx.run(q, {'target_id': db.neo_id(target)})
return origin
def switch_unplug(tx, dpid, mtime=True):
logging.info("Deactivate all ISL to/from %s", dpid)
involved = list(fetch_by_datapath(tx, dpid))
_lock_affected_switches(tx, involved, dpid)
for db_link in involved:
source = model.IslPathNode(db_link['src_switch'], db_link['src_port'])
dest = model.IslPathNode(db_link['dst_switch'], db_link['dst_port'])
isl = model.InterSwitchLink(source, dest, db_link['actual'])
logging.debug("Found ISL: %s", isl)
set_active_field(tx, db.neo_id(db_link), 'inactive')
update_status(tx, isl, mtime=mtime)
def set_props(tx, subject):
db_subject = fetch(tx, subject)
origin, update = db.locate_changes(db_subject, subject.props_db_view())
if update:
q = textwrap.dedent("""
MATCH (target:link_props)
WHERE id(target)=$target_id
""") + db.format_set_fields(
db.escape_fields(update), field_prefix='target.')
p = {'target_id': db.neo_id(db_subject)}
db.log_query('propagate link props to ISL', q, p)
tx.run(q, p)
return origin, update.keys()
def drop_db_flows(tx):
q_lookup = 'MATCH (:switch)-[a:flow]->(:switch) RETURN a'
q_delete = 'MATCH (:switch)-[a:flow]->(:switch) WHERE id(a)=$id DELETE a'
batch = (x['a'] for x in tx.run(q_lookup))
for relation in batch:
cookie = relation['cookie']
if cookie is None:
continue
try:
cookie = int(cookie)
if not (cookie & cookie_test_data_flag):
continue
except ValueError:
continue
drop_db_flow_segments(tx, relation['flowid'])
tx.run(q_delete, {'id': db.neo_id(relation)})
def set_link_props(tx, isl, props):
target = fetch_link_props(tx, isl)
origin, update = _locate_changes(target, props)
if update:
q = textwrap.dedent("""
MATCH (target:link_props)
WHERE id(target)=$target_id
""") + db.format_set_fields(db.escape_fields(update),
field_prefix='target.')
p = {'target_id': db.neo_id(target)}
db.log_query('link_props set props', q, p)
tx.run(q, p)
sync_with_link_props(tx, isl, *update.keys())
return origin
def disable_by_endpoint(tx, endpoint, is_moved=False, mtime=True):
logging.debug('Locate all ISL starts on %s', endpoint)
involved = list(fetch_by_endpoint(tx, endpoint))
_lock_affected_switches(tx, involved, endpoint.dpid)
updated = []
for link in involved:
isl = model.InterSwitchLink.new_from_db(link)
logger.info('Deactivate ISL %s', isl)
status = 'moved' if is_moved else 'inactive'
set_active_field(tx, db.neo_id(link), status)
update_status(tx, isl, mtime=mtime)
updated.append(isl)
return updated
def disable_by_endpoint(tx, endpoint, is_moved=False):
logging.debug('Locate all ISL starts on %s', endpoint)
involved = list(fetch_by_endpoint(tx, endpoint))
switches = set()
for link in involved:
switches.add(link['src_switch'])
switches.add(link['dst_switch'])
flow_utils.precreate_switches(tx, *switches)
updated = []
for link in involved:
isl = model.InterSwitchLink.new_from_db(link)
logger.info('Deactivate ISL %s', isl)
status = 'moved' if is_moved else 'inactive'
set_active_field(tx, db.neo_id(link), status)
update_status(tx, isl)
updated.append(isl)
return updated
def set_props(tx, isl, props):
match = _make_match(isl)
q = textwrap.dedent("""
MATCH
(:switch {name: $src_switch})
-
[target:isl {
src_switch: $src_switch,
src_port: $src_port,
dst_switch: $dst_switch,
dst_port: $dst_port
}]
->
(:switch {name: $dst_switch})
RETURN target""")
logger.debug('ISL lookup query:\n%s', q)
cursor = tx.run(q, match)
try:
target = db.fetch_one(cursor)['target']
except exc.DBEmptyResponse:
raise exc.DBRecordNotFound(q, match)
origin, update = _locate_changes(target, props)
if update:
q = textwrap.dedent("""
MATCH (:switch)-[target:isl]->(:switch)
WHERE id(target)=$target_id
""") + db.format_set_fields(db.escape_fields(update),
field_prefix='target.')
logger.debug('Push ISL properties: %r', update)
tx.run(q, {'target_id': db.neo_id(target)})
return origin
