def _wait_slaves_switch(group_id, master_uuid, slave_uuid):
"""Synchronize candidate with master and also all the other slaves.
Note that this can be optimized as one may determine the set of
slaves that must be synchronized with the master.
"""
master = _server.MySQLServer.fetch(_uuid.UUID(master_uuid))
master.connect()
slave = _server.MySQLServer.fetch(_uuid.UUID(slave_uuid))
slave.connect()
_utils.synchronize(slave, master)
_do_wait_slaves_catch(group_id, master, [slave_uuid])
_events.trigger_within_procedure(CHANGE_TO_CANDIDATE, group_id, slave_uuid)
def _wait_slaves_switch(group_id, master_uuid, slave_uuid):
"""Synchronize candidate with master and also all the other slaves.
Note that this can be optimized as one may determine the set of
slaves that must be synchronized with the master.
"""
master = _server.MySQLServer.fetch(_uuid.UUID(master_uuid))
master.connect()
slave = _server.MySQLServer.fetch(_uuid.UUID(slave_uuid))
slave.connect()
_utils.synchronize(slave, master)
_do_wait_slaves_catch(group_id, master, [slave_uuid])
_events.trigger_within_procedure(CHANGE_TO_CANDIDATE, group_id, slave_uuid)
def _do_wait_slaves_catch(group_id, master, skip_servers=None):
"""Synchronize slaves with master.
"""
skip_servers = skip_servers or []
skip_servers.append(str(master.uuid))
group = _server.Group.fetch(group_id)
for server in group.servers():
if str(server.uuid) not in skip_servers:
try:
server.connect()
used_master_uuid = _replication.slave_has_master(server)
if str(master.uuid) == used_master_uuid:
_utils.synchronize(server, master)
else:
_LOGGER.debug(
"Slave (%s) has a different master "
"from group (%s).", server.uuid, group_id)
except _errors.DatabaseError as error:
_LOGGER.debug("Error synchronizing slave (%s): %s.",
server.uuid, error)
def _do_wait_slaves_catch(group_id, master, skip_servers=None):
"""Synchronize slaves with master.
"""
skip_servers = skip_servers or []
skip_servers.append(str(master.uuid))
group = _server.Group.fetch(group_id)
for server in group.servers():
if str(server.uuid) not in skip_servers:
try:
server.connect()
used_master_uuid = _replication.slave_has_master(server)
if str(master.uuid) == used_master_uuid:
_utils.synchronize(server, master)
else:
_LOGGER.debug("Slave (%s) has a different master "
"from group (%s).", server.uuid, group_id)
except _errors.DatabaseError as error:
_LOGGER.debug(
"Error synchronizing slave (%s).", server.uuid,
exc_info=error
)
