Example #1
0
// CheckServingGraph makes sure the serving graph functions work properly.
func CheckServingGraph(ctx context.Context, t *testing.T, ts topo.Impl) {
	cell := getLocalCell(ctx, t, ts)

	// test individual cell/keyspace/shard/type entries
	if _, err := ts.GetSrvTabletTypesPerShard(ctx, cell, "test_keyspace", "-10"); err != topo.ErrNoNode {
		t.Errorf("GetSrvTabletTypesPerShard(invalid): %v", err)
	}
	if _, _, err := ts.GetEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER); err != topo.ErrNoNode {
		t.Errorf("GetEndPoints(invalid): %v", err)
	}

	endPoints := &topodatapb.EndPoints{
		Entries: []*topodatapb.EndPoint{
			&topodatapb.EndPoint{
				Uid:  1,
				Host: "host1",
				PortMap: map[string]int32{
					"vt":    1234,
					"mysql": 1235,
					"grpc":  1236,
				},
			},
		},
	}

	if err := ts.CreateEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, endPoints); err != nil {
		t.Fatalf("CreateEndPoints(master): %v", err)
	}
	// Try to create again.
	if err := ts.CreateEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, endPoints); err != topo.ErrNodeExists {
		t.Fatalf("CreateEndPoints(master): err = %v, want topo.ErrNodeExists", err)
	}

	// Get version.
	_, version, err := ts.GetEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER)
	if err != nil {
		t.Fatalf("GetEndPoints(master): %v", err)
	}
	// Make a change.
	tmp := endPoints.Entries[0].Uid
	endPoints.Entries[0].Uid = tmp + 1
	if err := ts.UpdateEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, endPoints, -1); err != nil {
		t.Fatalf("UpdateEndPoints(master): %v", err)
	}
	endPoints.Entries[0].Uid = tmp
	// Try to delete with the wrong version.
	if err := ts.DeleteEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, version); err != topo.ErrBadVersion {
		t.Fatalf("DeleteEndPoints: err = %v, want topo.ErrBadVersion", err)
	}
	// Delete with the correct version.
	_, version, err = ts.GetEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER)
	if err != nil {
		t.Fatalf("GetEndPoints(master): %v", err)
	}
	if err := ts.DeleteEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, version); err != nil {
		t.Fatalf("DeleteEndPoints: %v", err)
	}
	// Recreate it with an unconditional update.
	if err := ts.UpdateEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, endPoints, -1); err != nil {
		t.Fatalf("UpdateEndPoints(master): %v", err)
	}

	if types, err := ts.GetSrvTabletTypesPerShard(ctx, cell, "test_keyspace", "-10"); err != nil || len(types) != 1 || types[0] != topodatapb.TabletType_MASTER {
		t.Errorf("GetSrvTabletTypesPerShard(1): %v %v", err, types)
	}

	// Delete it unconditionally.
	if err := ts.DeleteEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, -1); err != nil {
		t.Fatalf("DeleteEndPoints: %v", err)
	}

	// Delete the SrvShard.
	if err := ts.DeleteSrvShard(ctx, cell, "test_keyspace", "-10"); err != nil {
		t.Fatalf("DeleteSrvShard: %v", err)
	}
	if _, err := ts.GetSrvShard(ctx, cell, "test_keyspace", "-10"); err != topo.ErrNoNode {
		t.Errorf("GetSrvShard(deleted) got %v, want ErrNoNode", err)
	}

	// Re-add endpoints.
	if err := ts.UpdateEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, endPoints, -1); err != nil {
		t.Fatalf("UpdateEndPoints(master): %v", err)
	}

	addrs, version, err := ts.GetEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER)
	if err != nil {
		t.Errorf("GetEndPoints: %v", err)
	}
	if len(addrs.Entries) != 1 || addrs.Entries[0].Uid != 1 {
		t.Errorf("GetEndPoints(1): %v", addrs)
	}
	if pm := addrs.Entries[0].PortMap; pm["vt"] != 1234 || pm["mysql"] != 1235 || pm["grpc"] != 1236 {
		t.Errorf("GetSrcTabletType(1).PortMap: want %v, got %v", endPoints.Entries[0].PortMap, pm)
	}

	// Update with the wrong version.
	if err := ts.UpdateEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, endPoints, version+1); err != topo.ErrBadVersion {
		t.Fatalf("UpdateEndPoints(master): err = %v, want topo.ErrBadVersion", err)
	}
	// Update with the right version.
	if err := ts.UpdateEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, endPoints, version); err != nil {
		t.Fatalf("UpdateEndPoints(master): %v", err)
	}
	// Update existing EndPoints unconditionally.
	if err := ts.UpdateEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, endPoints, -1); err != nil {
		t.Fatalf("UpdateEndPoints(master): %v", err)
	}

	if err := ts.DeleteEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_REPLICA, -1); err != topo.ErrNoNode {
		t.Errorf("DeleteEndPoints(unknown): %v", err)
	}
	if err := ts.DeleteEndPoints(ctx, cell, "test_keyspace", "-10", topodatapb.TabletType_MASTER, -1); err != nil {
		t.Errorf("DeleteEndPoints(master): %v", err)
	}

	// test cell/keyspace/shard entries (SrvShard)
	srvShard := &topodatapb.SrvShard{
		Name:       "-10",
		KeyRange:   newKeyRange("-10"),
		MasterCell: "test",
	}
	if err := ts.UpdateSrvShard(ctx, cell, "test_keyspace", "-10", srvShard); err != nil {
		t.Fatalf("UpdateSrvShard(1): %v", err)
	}
	if _, err := ts.GetSrvShard(ctx, cell, "test_keyspace", "666"); err != topo.ErrNoNode {
		t.Errorf("GetSrvShard(invalid): %v", err)
	}
	if s, err := ts.GetSrvShard(ctx, cell, "test_keyspace", "-10"); err != nil ||
		s.Name != "-10" ||
		!key.KeyRangeEqual(s.KeyRange, newKeyRange("-10")) ||
		s.MasterCell != "test" {
		t.Errorf("GetSrvShard(valid): %v", err)
	}

	// test cell/keyspace entries (SrvKeyspace)
	srvKeyspace := topodatapb.SrvKeyspace{
		Partitions: []*topodatapb.SrvKeyspace_KeyspacePartition{
			&topodatapb.SrvKeyspace_KeyspacePartition{
				ServedType: topodatapb.TabletType_MASTER,
				ShardReferences: []*topodatapb.ShardReference{
					&topodatapb.ShardReference{
						Name: "-80",
						KeyRange: &topodatapb.KeyRange{
							End: []byte{0x80},
						},
					},
				},
			},
		},
		ShardingColumnName: "video_id",
		ShardingColumnType: topodatapb.KeyspaceIdType_UINT64,
		ServedFrom: []*topodatapb.SrvKeyspace_ServedFrom{
			&topodatapb.SrvKeyspace_ServedFrom{
				TabletType: topodatapb.TabletType_REPLICA,
				Keyspace:   "other_keyspace",
			},
		},
	}
	if err := ts.UpdateSrvKeyspace(ctx, cell, "test_keyspace", &srvKeyspace); err != nil {
		t.Errorf("UpdateSrvKeyspace(1): %v", err)
	}
	if _, err := ts.GetSrvKeyspace(ctx, cell, "test_keyspace666"); err != topo.ErrNoNode {
		t.Errorf("GetSrvKeyspace(invalid): %v", err)
	}
	if k, err := ts.GetSrvKeyspace(ctx, cell, "test_keyspace"); err != nil ||
		len(k.Partitions) != 1 ||
		k.Partitions[0].ServedType != topodatapb.TabletType_MASTER ||
		len(k.Partitions[0].ShardReferences) != 1 ||
		k.Partitions[0].ShardReferences[0].Name != "-80" ||
		key.KeyRangeString(k.Partitions[0].ShardReferences[0].KeyRange) != "-80" ||
		k.ShardingColumnName != "video_id" ||
		k.ShardingColumnType != topodatapb.KeyspaceIdType_UINT64 ||
		len(k.ServedFrom) != 1 ||
		k.ServedFrom[0].TabletType != topodatapb.TabletType_REPLICA ||
		k.ServedFrom[0].Keyspace != "other_keyspace" {
		t.Errorf("GetSrvKeyspace(valid): %v %v", err, k)
	}
	if k, err := ts.GetSrvKeyspaceNames(ctx, cell); err != nil || len(k) != 1 || k[0] != "test_keyspace" {
		t.Errorf("GetSrvKeyspaceNames(): %v", err)
	}

	// check that updating a SrvKeyspace out of the blue works
	if err := ts.UpdateSrvKeyspace(ctx, cell, "unknown_keyspace_so_far", &srvKeyspace); err != nil {
		t.Fatalf("UpdateSrvKeyspace(2): %v", err)
	}
	if k, err := ts.GetSrvKeyspace(ctx, cell, "unknown_keyspace_so_far"); err != nil ||
		len(k.Partitions) != 1 ||
		k.Partitions[0].ServedType != topodatapb.TabletType_MASTER ||
		len(k.Partitions[0].ShardReferences) != 1 ||
		k.Partitions[0].ShardReferences[0].Name != "-80" ||
		key.KeyRangeString(k.Partitions[0].ShardReferences[0].KeyRange) != "-80" ||
		k.ShardingColumnName != "video_id" ||
		k.ShardingColumnType != topodatapb.KeyspaceIdType_UINT64 ||
		len(k.ServedFrom) != 1 ||
		k.ServedFrom[0].TabletType != topodatapb.TabletType_REPLICA ||
		k.ServedFrom[0].Keyspace != "other_keyspace" {
		t.Errorf("GetSrvKeyspace(out of the blue): %v %v", err, *k)
	}

	// Delete the SrvKeyspace.
	if err := ts.DeleteSrvKeyspace(ctx, cell, "unknown_keyspace_so_far"); err != nil {
		t.Fatalf("DeleteSrvShard: %v", err)
	}
	if _, err := ts.GetSrvKeyspace(ctx, cell, "unknown_keyspace_so_far"); err != topo.ErrNoNode {
		t.Errorf("GetSrvKeyspace(deleted) got %v, want ErrNoNode", err)
	}
}