def fetch(tx, isl):
p = _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""")
db.log_query('ISL fetch', q, p)
cursor = tx.run(q, p)
try:
target = db.fetch_one(cursor)['target']
except exc.DBEmptyResponse:
raise exc.DBRecordNotFound(q, p)
return target
def fetch(tx, isl):
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('link_props 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)
return target
def set_link_props(tx, isl, props):
match = _make_match(isl)
q = textwrap.dedent("""
MATCH (target:link_props {
src_switch: $src_switch,
src_port: $src_port,
dst_switch: $dst_switch,
dst_port: $dst_port})
RETURN target""")
logger.debug('link_props lookup query:\n%s', q)
cursor = tx.run(q, match)
try:
target = db.fetch_one(cursor)['target']
except exc.DBEmptyResponse:
raise exc.DBRecordNotFound(q, match)
origin, update = _locate_changes(target, props)
if update:
q = textwrap.dedent("""
MATCH (target:link_props)
WHERE id(target)=$target_id
""") + db.format_set_fields(db.escape_fields(update),
field_prefix='target.')
logger.debug('Push link_props properties: %r', update)
tx.run(q, {'target_id': py2neo.remote(target)._id})
sync_with_link_props(tx, isl, *update.keys())
return origin
def fetch(tx, subject):
p = _make_match(subject)
q = textwrap.dedent("""
MATCH (target:link_props {
src_switch: $src_switch,
src_port: $src_port,
dst_switch: $dst_switch,
dst_port: $dst_port})
RETURN target""")
db.log_query('link props update', q, p)
cursor = tx.run(q, p)
try:
db_object = db.fetch_one(cursor)['target']
except exc.DBEmptyResponse:
raise exc.DBRecordNotFound(q, p)
return db_object
def drop(tx, subject):
logger.info("Delete %s request", subject)
q = textwrap.dedent("""
MATCH (target:link_props)
WHERE target.src_switch=$src_switch,
AND target.src_port=$src_port,
AND target.dst_port=$dst_port,
AND target.dst_switch=$dst_switch
DELETE target
RETURN target""")
p = _make_match(subject)
db.log_query('delete link props', q, p)
cursor = tx.run(q, p)
try:
db_subject = db.fetch_one(cursor)['target']
except exc.DBEmptyResponse:
raise exc.DBRecordNotFound(q, p)
return model.LinkProps.new_from_db(db_subject)
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
def __init__(self, cursor, q, p):
self.cursor = cursor
self.exc_empty = exc.DBRecordNotFound(q, p)