func CheckTablet(ctx context.Context, t *testing.T, ts topo.Server) { cell := getLocalCell(t, ts) tablet := &topo.Tablet{ Alias: topo.TabletAlias{Cell: cell, Uid: 1}, Hostname: "localhost", IPAddr: "10.11.12.13", Portmap: map[string]int{ "vt": 3333, "mysql": 3334, }, Tags: map[string]string{"tag": "value"}, Keyspace: "test_keyspace", Type: topo.TYPE_MASTER, State: topo.STATE_READ_WRITE, KeyRange: newKeyRange("-10"), } if err := ts.CreateTablet(tablet); err != nil { t.Errorf("CreateTablet: %v", err) } if err := ts.CreateTablet(tablet); err != topo.ErrNodeExists { t.Errorf("CreateTablet(again): %v", err) } if _, err := ts.GetTablet(topo.TabletAlias{Cell: cell, Uid: 666}); err != topo.ErrNoNode { t.Errorf("GetTablet(666): %v", err) } ti, err := ts.GetTablet(tablet.Alias) if err != nil { t.Errorf("GetTablet %v: %v", tablet.Alias, err) } if eq, err := tabletEqual(ti.Tablet, tablet); err != nil { t.Errorf("cannot compare tablets: %v", err) } else if !eq { t.Errorf("put and got tablets are not identical:\n%#v\n%#v", tablet, ti.Tablet) } if _, err := ts.GetTabletsByCell("666"); err != topo.ErrNoNode { t.Errorf("GetTabletsByCell(666): %v", err) } inCell, err := ts.GetTabletsByCell(cell) if err != nil { t.Errorf("GetTabletsByCell: %v", err) } if len(inCell) != 1 || inCell[0] != tablet.Alias { t.Errorf("GetTabletsByCell: want [%v], got %v", tablet.Alias, inCell) } ti.State = topo.STATE_READ_ONLY if err := topo.UpdateTablet(ctx, ts, ti); err != nil { t.Errorf("UpdateTablet: %v", err) } ti, err = ts.GetTablet(tablet.Alias) if err != nil { t.Errorf("GetTablet %v: %v", tablet.Alias, err) } if want := topo.STATE_READ_ONLY; ti.State != want { t.Errorf("ti.State: want %v, got %v", want, ti.State) } if err := ts.UpdateTabletFields(tablet.Alias, func(t *topo.Tablet) error { t.State = topo.STATE_READ_WRITE return nil }); err != nil { t.Errorf("UpdateTabletFields: %v", err) } ti, err = ts.GetTablet(tablet.Alias) if err != nil { t.Errorf("GetTablet %v: %v", tablet.Alias, err) } if want := topo.STATE_READ_WRITE; ti.State != want { t.Errorf("ti.State: want %v, got %v", want, ti.State) } if err := ts.DeleteTablet(tablet.Alias); err != nil { t.Errorf("DeleteTablet: %v", err) } if err := ts.DeleteTablet(tablet.Alias); err != topo.ErrNoNode { t.Errorf("DeleteTablet(again): %v", err) } if _, err := ts.GetTablet(tablet.Alias); err != topo.ErrNoNode { t.Errorf("GetTablet: expected error, tablet was deleted: %v", err) } }