// GetAllTablets returns a sorted list of tablets.
func GetAllTablets(ctx context.Context, ts topo.Server, cell string) ([]*topo.TabletInfo, error) {
aliases, err := ts.GetTabletsByCell(cell)
if err != nil {
return nil, err
}
sort.Sort(topo.TabletAliasList(aliases))
tabletMap, err := topo.GetTabletMap(ctx, ts, aliases)
if err != nil {
// we got another error than topo.ErrNoNode
return nil, err
}
tablets := make([]*topo.TabletInfo, 0, len(aliases))
for _, tabletAlias := range aliases {
tabletInfo, ok := tabletMap[tabletAlias]
if !ok {
// tablet disappeared on us (GetTabletMap ignores
// topo.ErrNoNode), just echo a warning
log.Warningf("failed to load tablet %v", tabletAlias)
} else {
tablets = append(tablets, tabletInfo)
}
}
return tablets, nil
}
// CopyTablets will create the tablets in the destination topo
func CopyTablets(fromTS, toTS topo.Server) {
cells, err := fromTS.GetKnownCells()
if err != nil {
log.Fatalf("fromTS.GetKnownCells: %v", err)
}
wg := sync.WaitGroup{}
rec := concurrency.AllErrorRecorder{}
for _, cell := range cells {
wg.Add(1)
go func(cell string) {
defer wg.Done()
tabletAliases, err := fromTS.GetTabletsByCell(cell)
if err != nil {
rec.RecordError(fmt.Errorf("GetTabletsByCell(%v): %v", cell, err))
} else {
for _, tabletAlias := range tabletAliases {
wg.Add(1)
go func(tabletAlias topo.TabletAlias) {
defer wg.Done()
// read the source tablet
ti, err := fromTS.GetTablet(tabletAlias)
if err != nil {
rec.RecordError(fmt.Errorf("GetTablet(%v): %v", tabletAlias, err))
return
}
// try to create the destination
err = toTS.CreateTablet(ti.Tablet)
if err == topo.ErrNodeExists {
// update the destination tablet
log.Warningf("tablet %v already exists, updating it", tabletAlias)
err = toTS.UpdateTabletFields(ti.Alias, func(t *topo.Tablet) error {
*t = *ti.Tablet
return nil
})
}
if err != nil {
rec.RecordError(fmt.Errorf("CreateTablet(%v): %v", tabletAlias, err))
return
}
}(tabletAlias)
}
}
}(cell)
}
wg.Wait()
if rec.HasErrors() {
log.Fatalf("copyTablets failed: %v", rec.Error())
}
}
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)
}
}