def test_reconfigure_too_many_replicas(rdb_conn, db_name, db_conn):
from bigchaindb.backend.rethinkdb.admin import reconfigure
from bigchaindb.backend.exceptions import OperationError
replicas = _count_rethinkdb_servers() + 1
with pytest.raises(OperationError) as exc:
reconfigure(db_conn, table='backlog', shards=1, replicas=replicas)
assert isinstance(exc.value.__cause__, r.ReqlOpFailedError)
def test_reconfigure(rdb_conn, db_name, db_conn):
from bigchaindb.backend.rethinkdb.admin import reconfigure
table_config = r.db(db_name).table('backlog').config().run(rdb_conn)
replicas_before = table_config['shards'][0]['replicas']
assert len(replicas_before) == 1
reconfigure(db_conn, table='backlog', shards=2, replicas=2)
table_config = r.db(db_name).table('backlog').config().run(rdb_conn)
assert len(table_config['shards'][0]['replicas']) == 2
assert (table_config['shards'][0]['replicas'][0] !=
table_config['shards'][0]['replicas'][1])
def test_reconfigure_replicas_without_nonvoting_replica_tags(
rdb_conn, db_name, db_conn):
from bigchaindb.backend.rethinkdb.admin import reconfigure
from bigchaindb.backend.exceptions import OperationError
with pytest.raises(OperationError) as exc:
reconfigure(db_conn,
table='backlog',
shards=1,
replicas={'default': 1},
primary_replica_tag='default')
assert isinstance(exc.value.__cause__, r.ReqlQueryLogicError)
def test_reconfigure_shards_dry_run(rdb_conn, db_name, db_conn):
from bigchaindb.backend.rethinkdb.admin import reconfigure
table_config = r.db(db_name).table('backlog').config().run(rdb_conn)
replicas_before = table_config['shards'][0]['replicas']
assert len(replicas_before) == 1
assert len(table_config['shards']) == 1
what_happened = reconfigure(
db_conn,
table='backlog',
shards=2,
replicas={'default': 1},
primary_replica_tag='default',
nonvoting_replica_tags=('default', ),
dry_run=True,
)
assert what_happened['reconfigured'] == 0
assert len(what_happened['config_changes']) == 1
assert len(what_happened['config_changes'][0]['new_val']['shards']) == 2
table_config = r.db(db_name).table('backlog').config().run(rdb_conn)
assert len(table_config['shards']) == 1