Tests for main restoration
This commit is contained in:
Andi Skrgat
parent
8124226ba9
commit
34a7fed59a
@ -53,63 +53,147 @@ MEMGRAPH_INSTANCES_DESCRIPTION = {
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}
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def test_show_replication_cluster(connection):
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# Goal of this test is to check the SHOW REPLICATION CLUSTER command.
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# 1. We start all replicas, main and coordinator manually: we want to be able to kill them ourselves without relying on external tooling to kill processes.
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# 2. We check that all replicas and main have the correct state: they should all be alive.
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# 3. We kill one replica. It should not appear anymore in the SHOW REPLICATION CLUSTER command.
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# 4. We kill main. It should not appear anymore in the SHOW REPLICATION CLUSTER command.
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# def test_show_replication_cluster(connection):
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# # Goal of this test is to check the SHOW REPLICATION CLUSTER command.
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# # 1. We start all replicas, main and coordinator manually: we want to be able to kill them ourselves without relying on external tooling to kill processes.
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# # 2. We check that all replicas and main have the correct state: they should all be alive.
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# # 3. We kill one replica. It should not appear anymore in the SHOW REPLICATION CLUSTER command.
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# # 4. We kill main. It should not appear anymore in the SHOW REPLICATION CLUSTER command.
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#
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# # 1.
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# interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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#
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# cursor = connection(7690, "coordinator").cursor()
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#
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# # 2.
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#
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# # We leave some time for the coordinator to realise the replicas are down.
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# def retrieve_data():
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# return sorted(list(execute_and_fetch_all(cursor, "SHOW REPLICATION CLUSTER;")))
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#
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# expected_data = [
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# ("instance_1", "127.0.0.1:10011", True, "replica"),
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# ("instance_2", "127.0.0.1:10012", True, "replica"),
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# ("instance_3", "127.0.0.1:10013", True, "main"),
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# ]
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# mg_sleep_and_assert(expected_data, retrieve_data)
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#
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# # 3.
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# interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_1")
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#
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# expected_data = [
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# ("instance_1", "127.0.0.1:10011", False, ""),
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# ("instance_2", "127.0.0.1:10012", True, "replica"),
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# ("instance_3", "127.0.0.1:10013", True, "main"),
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# ]
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# mg_sleep_and_assert(expected_data, retrieve_data)
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#
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# # 4.
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# interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_2")
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#
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# expected_data = [
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# ("instance_1", "127.0.0.1:10011", False, ""),
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# ("instance_2", "127.0.0.1:10012", False, ""),
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# ("instance_3", "127.0.0.1:10013", True, "main"),
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# ]
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# mg_sleep_and_assert(expected_data, retrieve_data)
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#
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#
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# def test_simple_automatic_failover(connection):
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# interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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#
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# main_cursor = connection(7687, "instance_3").cursor()
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# expected_data_on_main = [
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# ("instance_1", "127.0.0.1:10001", "sync", 0, 0, "ready"),
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# ("instance_2", "127.0.0.1:10002", "sync", 0, 0, "ready"),
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# ]
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# actual_data_on_main = sorted(list(execute_and_fetch_all(main_cursor, "SHOW REPLICAS;")))
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# assert actual_data_on_main == expected_data_on_main
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#
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# interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_3")
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#
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# coord_cursor = connection(7690, "coordinator").cursor()
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#
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# def retrieve_data_show_repl_cluster():
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# return sorted(list(execute_and_fetch_all(coord_cursor, "SHOW REPLICATION CLUSTER;")))
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#
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# expected_data_on_coord = [
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# ("instance_1", "127.0.0.1:10011", True, "main"),
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# ("instance_2", "127.0.0.1:10012", True, "replica"),
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# ("instance_3", "127.0.0.1:10013", False, ""),
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# ]
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# mg_sleep_and_assert(expected_data_on_coord, retrieve_data_show_repl_cluster)
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#
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# new_main_cursor = connection(7688, "instance_1").cursor()
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#
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# def retrieve_data_show_replicas():
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# return sorted(list(execute_and_fetch_all(new_main_cursor, "SHOW REPLICAS;")))
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#
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# expected_data_on_new_main = [
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# ("instance_2", "127.0.0.1:10002", "sync", 0, 0, "ready"),
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# ]
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# mg_sleep_and_assert(expected_data_on_new_main, retrieve_data_show_replicas)
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#
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#
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# def test_registering_replica_fails_name_exists(connection):
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# interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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#
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# coord_cursor = connection(7690, "coordinator").cursor()
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# with pytest.raises(Exception) as e:
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# execute_and_fetch_all(
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# coord_cursor,
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# "REGISTER INSTANCE instance_1 ON '127.0.0.1:10051' WITH '127.0.0.1:10111';",
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# )
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# assert str(e.value) == "Couldn't register replica instance since instance with such name already exists!"
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#
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#
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# def test_registering_replica_fails_endpoint_exists(connection):
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# interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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#
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# coord_cursor = connection(7690, "coordinator").cursor()
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# with pytest.raises(Exception) as e:
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# execute_and_fetch_all(
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# coord_cursor,
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# "REGISTER INSTANCE instance_5 ON '127.0.0.1:10001' WITH '127.0.0.1:10013';",
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# )
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# assert (
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# str(e.value)
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# == "Couldn't register replica because promotion on replica failed! Check logs on replica to find out more info!"
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# )
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#
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#
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# def test_replica_instance_restarts(connection):
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# interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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#
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# cursor = connection(7690, "coordinator").cursor()
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#
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# def retrieve_data():
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# return sorted(list(execute_and_fetch_all(cursor, "SHOW REPLICATION CLUSTER;")))
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#
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# expected_data_up = [
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# ("instance_1", "127.0.0.1:10011", True, "replica"),
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# ("instance_2", "127.0.0.1:10012", True, "replica"),
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# ("instance_3", "127.0.0.1:10013", True, "main"),
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# ]
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# mg_sleep_and_assert(expected_data_up, retrieve_data)
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#
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# interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_1")
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#
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# expected_data_down = [
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# ("instance_1", "127.0.0.1:10011", False, ""),
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# ("instance_2", "127.0.0.1:10012", True, "replica"),
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# ("instance_3", "127.0.0.1:10013", True, "main"),
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# ]
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# mg_sleep_and_assert(expected_data_down, retrieve_data)
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#
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# interactive_mg_runner.start(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_1")
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#
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# mg_sleep_and_assert(expected_data_up, retrieve_data)
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# 1.
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def test_automatic_failover_main_back_as_replica(connection):
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interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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cursor = connection(7690, "coordinator").cursor()
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# 2.
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# We leave some time for the coordinator to realise the replicas are down.
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def retrieve_data():
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return sorted(list(execute_and_fetch_all(cursor, "SHOW REPLICATION CLUSTER;")))
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expected_data = [
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("instance_1", "127.0.0.1:10011", True, "replica"),
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("instance_2", "127.0.0.1:10012", True, "replica"),
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("instance_3", "127.0.0.1:10013", True, "main"),
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]
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mg_sleep_and_assert(expected_data, retrieve_data)
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# 3.
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interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_1")
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expected_data = [
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("instance_1", "127.0.0.1:10011", False, ""),
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("instance_2", "127.0.0.1:10012", True, "replica"),
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("instance_3", "127.0.0.1:10013", True, "main"),
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]
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mg_sleep_and_assert(expected_data, retrieve_data)
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# 4.
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interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_2")
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expected_data = [
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("instance_1", "127.0.0.1:10011", False, ""),
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("instance_2", "127.0.0.1:10012", False, ""),
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("instance_3", "127.0.0.1:10013", True, "main"),
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]
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mg_sleep_and_assert(expected_data, retrieve_data)
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def test_simple_automatic_failover(connection):
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interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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main_cursor = connection(7687, "instance_3").cursor()
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expected_data_on_main = [
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("instance_1", "127.0.0.1:10001", "sync", 0, 0, "ready"),
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("instance_2", "127.0.0.1:10002", "sync", 0, 0, "ready"),
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]
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actual_data_on_main = sorted(list(execute_and_fetch_all(main_cursor, "SHOW REPLICAS;")))
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assert actual_data_on_main == expected_data_on_main
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interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_3")
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coord_cursor = connection(7690, "coordinator").cursor()
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@ -117,78 +201,61 @@ def test_simple_automatic_failover(connection):
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def retrieve_data_show_repl_cluster():
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return sorted(list(execute_and_fetch_all(coord_cursor, "SHOW REPLICATION CLUSTER;")))
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expected_data_on_coord = [
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expected_data_after_failover = [
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("instance_1", "127.0.0.1:10011", True, "main"),
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("instance_2", "127.0.0.1:10012", True, "replica"),
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("instance_3", "127.0.0.1:10013", False, ""),
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]
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mg_sleep_and_assert(expected_data_on_coord, retrieve_data_show_repl_cluster)
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mg_sleep_and_assert(expected_data_after_failover, retrieve_data_show_repl_cluster)
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new_main_cursor = connection(7688, "instance_1").cursor()
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def retrieve_data_show_replicas():
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return sorted(list(execute_and_fetch_all(new_main_cursor, "SHOW REPLICAS;")))
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expected_data_on_new_main = [
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("instance_2", "127.0.0.1:10002", "sync", 0, 0, "ready"),
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expected_data_after_main_coming_back = [
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("instance_1", "127.0.0.1:10011", True, "main"),
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("instance_2", "127.0.0.1:10012", True, "replica"),
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("instance_3", "127.0.0.1:10013", True, "replica"),
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]
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mg_sleep_and_assert(expected_data_on_new_main, retrieve_data_show_replicas)
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interactive_mg_runner.start(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_3")
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mg_sleep_and_assert(expected_data_after_main_coming_back, retrieve_data_show_repl_cluster)
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def test_registering_replica_fails_name_exists(connection):
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def test_automatic_failover_main_back_as_main(connection):
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interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_1")
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interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_2")
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interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_3")
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coord_cursor = connection(7690, "coordinator").cursor()
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with pytest.raises(Exception) as e:
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execute_and_fetch_all(
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coord_cursor,
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"REGISTER INSTANCE instance_1 ON '127.0.0.1:10051' WITH '127.0.0.1:10111';",
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)
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assert str(e.value) == "Couldn't register replica instance since instance with such name already exists!"
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def retrieve_data_show_repl_cluster():
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return sorted(list(execute_and_fetch_all(coord_cursor, "SHOW REPLICATION CLUSTER;")))
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def test_registering_replica_fails_endpoint_exists(connection):
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interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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expected_data_all_down = [
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("instance_1", "127.0.0.1:10011", False, ""),
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("instance_2", "127.0.0.1:10012", False, ""),
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("instance_3", "127.0.0.1:10013", False, ""),
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]
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coord_cursor = connection(7690, "coordinator").cursor()
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with pytest.raises(Exception) as e:
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execute_and_fetch_all(
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coord_cursor,
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"REGISTER INSTANCE instance_5 ON '127.0.0.1:10001' WITH '127.0.0.1:10013';",
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)
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assert (
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str(e.value)
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== "Couldn't register replica because promotion on replica failed! Check logs on replica to find out more info!"
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)
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mg_sleep_and_assert(expected_data_all_down, retrieve_data_show_repl_cluster)
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interactive_mg_runner.start(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_3")
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expected_data_main_back = [
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("instance_1", "127.0.0.1:10011", False, ""),
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("instance_2", "127.0.0.1:10012", False, ""),
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("instance_3", "127.0.0.1:10013", True, "main"),
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]
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mg_sleep_and_assert(expected_data_main_back, retrieve_data_show_repl_cluster)
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def test_replica_instance_restarts(connection):
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interactive_mg_runner.start_all(MEMGRAPH_INSTANCES_DESCRIPTION)
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interactive_mg_runner.start(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_1")
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interactive_mg_runner.start(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_2")
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cursor = connection(7690, "coordinator").cursor()
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def retrieve_data():
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return sorted(list(execute_and_fetch_all(cursor, "SHOW REPLICATION CLUSTER;")))
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expected_data_up = [
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expected_data_replicas_back = [
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("instance_1", "127.0.0.1:10011", True, "replica"),
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("instance_2", "127.0.0.1:10012", True, "replica"),
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("instance_3", "127.0.0.1:10013", True, "main"),
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]
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mg_sleep_and_assert(expected_data_up, retrieve_data)
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interactive_mg_runner.kill(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_1")
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expected_data_down = [
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("instance_1", "127.0.0.1:10011", False, ""),
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("instance_2", "127.0.0.1:10012", True, "replica"),
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("instance_3", "127.0.0.1:10013", True, "main"),
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]
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mg_sleep_and_assert(expected_data_down, retrieve_data)
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interactive_mg_runner.start(MEMGRAPH_INSTANCES_DESCRIPTION, "instance_1")
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mg_sleep_and_assert(expected_data_up, retrieve_data)
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mg_sleep_and_assert(expected_data_replicas_back, retrieve_data_show_repl_cluster)
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if __name__ == "__main__":
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