// CopyKeyspaces will create the keyspaces in the destination topo
func CopyKeyspaces(ctx context.Context, fromTS, toTS topo.Impl) {
keyspaces, err := fromTS.GetKeyspaces(ctx)
if err != nil {
log.Fatalf("GetKeyspaces: %v", err)
}
wg := sync.WaitGroup{}
rec := concurrency.AllErrorRecorder{}
for _, keyspace := range keyspaces {
wg.Add(1)
go func(keyspace string) {
defer wg.Done()
k, _, err := fromTS.GetKeyspace(ctx, keyspace)
if err != nil {
rec.RecordError(fmt.Errorf("GetKeyspace(%v): %v", keyspace, err))
return
}
if err := toTS.CreateKeyspace(ctx, keyspace, k); err != nil {
if err == topo.ErrNodeExists {
log.Warningf("keyspace %v already exists", keyspace)
} else {
rec.RecordError(fmt.Errorf("CreateKeyspace(%v): %v", keyspace, err))
}
}
}(keyspace)
}
wg.Wait()
if rec.HasErrors() {
log.Fatalf("copyKeyspaces failed: %v", rec.Error())
}
}
// CopyShardReplications will create the ShardReplication objects in
// the destination topo
func CopyShardReplications(ctx context.Context, fromTS, toTS topo.Impl) {
keyspaces, err := fromTS.GetKeyspaces(ctx)
if err != nil {
log.Fatalf("fromTS.GetKeyspaces: %v", err)
}
tts := topo.Server{
Impl: toTS,
}
wg := sync.WaitGroup{}
rec := concurrency.AllErrorRecorder{}
for _, keyspace := range keyspaces {
wg.Add(1)
go func(keyspace string) {
defer wg.Done()
shards, err := fromTS.GetShardNames(ctx, keyspace)
if err != nil {
rec.RecordError(fmt.Errorf("GetShardNames(%v): %v", keyspace, err))
return
}
for _, shard := range shards {
wg.Add(1)
go func(keyspace, shard string) {
defer wg.Done()
// read the source shard to get the cells
s, _, err := fromTS.GetShard(ctx, keyspace, shard)
if err != nil {
rec.RecordError(fmt.Errorf("GetShard(%v, %v): %v", keyspace, shard, err))
return
}
for _, cell := range s.Cells {
sri, err := fromTS.GetShardReplication(ctx, cell, keyspace, shard)
if err != nil {
rec.RecordError(fmt.Errorf("GetShardReplication(%v, %v, %v): %v", cell, keyspace, shard, err))
continue
}
if err := tts.UpdateShardReplicationFields(ctx, cell, keyspace, shard, func(oldSR *topodatapb.ShardReplication) error {
*oldSR = *sri.ShardReplication
return nil
}); err != nil {
rec.RecordError(fmt.Errorf("UpdateShardReplicationFields(%v, %v, %v): %v", cell, keyspace, shard, err))
}
}
}(keyspace, shard)
}
}(keyspace)
}
wg.Wait()
if rec.HasErrors() {
log.Fatalf("copyShards failed: %v", rec.Error())
}
}
// CopyShards will create the shards in the destination topo
func CopyShards(ctx context.Context, fromTS, toTS topo.Impl) {
keyspaces, err := fromTS.GetKeyspaces(ctx)
if err != nil {
log.Fatalf("fromTS.GetKeyspaces: %v", err)
}
wg := sync.WaitGroup{}
rec := concurrency.AllErrorRecorder{}
for _, keyspace := range keyspaces {
wg.Add(1)
go func(keyspace string) {
defer wg.Done()
shards, err := fromTS.GetShardNames(ctx, keyspace)
if err != nil {
rec.RecordError(fmt.Errorf("GetShardNames(%v): %v", keyspace, err))
return
}
for _, shard := range shards {
wg.Add(1)
go func(keyspace, shard string) {
defer wg.Done()
if err := toTS.CreateShard(ctx, keyspace, shard, &topodatapb.Shard{}); err != nil {
if err == topo.ErrNodeExists {
log.Warningf("shard %v/%v already exists", keyspace, shard)
} else {
rec.RecordError(fmt.Errorf("CreateShard(%v, %v): %v", keyspace, shard, err))
return
}
}
s, _, err := fromTS.GetShard(ctx, keyspace, shard)
if err != nil {
rec.RecordError(fmt.Errorf("GetShard(%v, %v): %v", keyspace, shard, err))
return
}
_, toV, err := toTS.GetShard(ctx, keyspace, shard)
if err != nil {
rec.RecordError(fmt.Errorf("toTS.GetShard(%v, %v): %v", keyspace, shard, err))
return
}
if _, err := toTS.UpdateShard(ctx, keyspace, shard, s, toV); err != nil {
rec.RecordError(fmt.Errorf("UpdateShard(%v, %v): %v", keyspace, shard, err))
}
}(keyspace, shard)
}
}(keyspace)
}
wg.Wait()
if rec.HasErrors() {
log.Fatalf("copyShards failed: %v", rec.Error())
}
}
// checkKeyspace tests the keyspace part of the API
func checkKeyspace(t *testing.T, ts topo.Impl) {
ctx := context.Background()
keyspaces, err := ts.GetKeyspaces(ctx)
if err != nil {
t.Errorf("GetKeyspaces(empty): %v", err)
}
if len(keyspaces) != 0 {
t.Errorf("len(GetKeyspaces()) != 0: %v", keyspaces)
}
if err := ts.CreateKeyspace(ctx, "test_keyspace", &topodatapb.Keyspace{}); err != nil {
t.Errorf("CreateKeyspace: %v", err)
}
if err := ts.CreateKeyspace(ctx, "test_keyspace", &topodatapb.Keyspace{}); err != topo.ErrNodeExists {
t.Errorf("CreateKeyspace(again) is not ErrNodeExists: %v", err)
}
// Delete and re-create.
if err := ts.DeleteKeyspace(ctx, "test_keyspace"); err != nil {
t.Errorf("DeleteKeyspace: %v", err)
}
if err := ts.CreateKeyspace(ctx, "test_keyspace", &topodatapb.Keyspace{}); err != nil {
t.Errorf("CreateKeyspace: %v", err)
}
keyspaces, err = ts.GetKeyspaces(ctx)
if err != nil {
t.Errorf("GetKeyspaces: %v", err)
}
if len(keyspaces) != 1 || keyspaces[0] != "test_keyspace" {
t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace"}, keyspaces)
}
k := &topodatapb.Keyspace{
ShardingColumnName: "user_id",
ShardingColumnType: topodatapb.KeyspaceIdType_UINT64,
ServedFroms: []*topodatapb.Keyspace_ServedFrom{
{
TabletType: topodatapb.TabletType_REPLICA,
Cells: []string{"c1", "c2"},
Keyspace: "test_keyspace3",
},
{
TabletType: topodatapb.TabletType_MASTER,
Cells: nil,
Keyspace: "test_keyspace3",
},
},
}
if err := ts.CreateKeyspace(ctx, "test_keyspace2", k); err != nil {
t.Errorf("CreateKeyspace: %v", err)
}
keyspaces, err = ts.GetKeyspaces(ctx)
if err != nil {
t.Errorf("GetKeyspaces: %v", err)
}
if len(keyspaces) != 2 ||
keyspaces[0] != "test_keyspace" ||
keyspaces[1] != "test_keyspace2" {
t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace", "test_keyspace2"}, keyspaces)
}
// re-read and update.
storedK, storedVersion, err := ts.GetKeyspace(ctx, "test_keyspace2")
if err != nil {
t.Fatalf("GetKeyspace: %v", err)
}
storedK.ShardingColumnName = "other_id"
var newServedFroms []*topodatapb.Keyspace_ServedFrom
for _, ksf := range storedK.ServedFroms {
if ksf.TabletType == topodatapb.TabletType_MASTER {
continue
}
if ksf.TabletType == topodatapb.TabletType_REPLICA {
ksf.Keyspace = "test_keyspace4"
}
newServedFroms = append(newServedFroms, ksf)
}
storedK.ServedFroms = newServedFroms
_, err = ts.UpdateKeyspace(ctx, "test_keyspace2", storedK, storedVersion)
if err != nil {
t.Fatalf("UpdateKeyspace: %v", err)
}
// unconditional update
storedK.ShardingColumnType = topodatapb.KeyspaceIdType_BYTES
_, err = ts.UpdateKeyspace(ctx, "test_keyspace2", storedK, -1)
if err != nil {
t.Fatalf("UpdateKeyspace(-1): %v", err)
}
storedK, storedVersion, err = ts.GetKeyspace(ctx, "test_keyspace2")
if err != nil {
t.Fatalf("GetKeyspace: %v", err)
}
if storedK.ShardingColumnName != "other_id" ||
storedK.ShardingColumnType != topodatapb.KeyspaceIdType_BYTES ||
len(storedK.ServedFroms) != 1 ||
storedK.ServedFroms[0].TabletType != topodatapb.TabletType_REPLICA ||
storedK.ServedFroms[0].Keyspace != "test_keyspace4" {
t.Errorf("GetKeyspace: unexpected keyspace, got %v", *storedK)
}
}
// CheckKeyspace tests the keyspace part of the API
func CheckKeyspace(ctx context.Context, t *testing.T, ts topo.Impl) {
keyspaces, err := ts.GetKeyspaces(ctx)
if err != nil {
t.Errorf("GetKeyspaces(empty): %v", err)
}
if len(keyspaces) != 0 {
t.Errorf("len(GetKeyspaces()) != 0: %v", keyspaces)
}
if err := ts.CreateKeyspace(ctx, "test_keyspace", &pb.Keyspace{}); err != nil {
t.Errorf("CreateKeyspace: %v", err)
}
if err := ts.CreateKeyspace(ctx, "test_keyspace", &pb.Keyspace{}); err != topo.ErrNodeExists {
t.Errorf("CreateKeyspace(again) is not ErrNodeExists: %v", err)
}
// Delete and re-create.
if err := ts.DeleteKeyspace(ctx, "test_keyspace"); err != nil {
t.Errorf("DeleteKeyspace: %v", err)
}
if err := ts.CreateKeyspace(ctx, "test_keyspace", &pb.Keyspace{}); err != nil {
t.Errorf("CreateKeyspace: %v", err)
}
keyspaces, err = ts.GetKeyspaces(ctx)
if err != nil {
t.Errorf("GetKeyspaces: %v", err)
}
if len(keyspaces) != 1 || keyspaces[0] != "test_keyspace" {
t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace"}, keyspaces)
}
k := &pb.Keyspace{
ShardingColumnName: "user_id",
ShardingColumnType: pb.KeyspaceIdType_UINT64,
ServedFroms: []*pb.Keyspace_ServedFrom{
&pb.Keyspace_ServedFrom{
TabletType: pb.TabletType_REPLICA,
Cells: []string{"c1", "c2"},
Keyspace: "test_keyspace3",
},
&pb.Keyspace_ServedFrom{
TabletType: pb.TabletType_MASTER,
Cells: nil,
Keyspace: "test_keyspace3",
},
},
SplitShardCount: 64,
}
if err := ts.CreateKeyspace(ctx, "test_keyspace2", k); err != nil {
t.Errorf("CreateKeyspace: %v", err)
}
keyspaces, err = ts.GetKeyspaces(ctx)
if err != nil {
t.Errorf("GetKeyspaces: %v", err)
}
if len(keyspaces) != 2 ||
keyspaces[0] != "test_keyspace" ||
keyspaces[1] != "test_keyspace2" {
t.Errorf("GetKeyspaces: want %v, got %v", []string{"test_keyspace", "test_keyspace2"}, keyspaces)
}
// Call delete shards and make sure the keyspace still exists.
if err := ts.DeleteKeyspaceShards(ctx, "test_keyspace2"); err != nil {
t.Errorf("DeleteKeyspaceShards: %v", err)
}
storedK, storedVersion, err := ts.GetKeyspace(ctx, "test_keyspace2")
if err != nil {
t.Fatalf("GetKeyspace: %v", err)
}
if !reflect.DeepEqual(storedK, k) {
t.Fatalf("returned keyspace doesn't match: got %v expected %v", storedK, k)
}
storedK.ShardingColumnName = "other_id"
storedK.ShardingColumnType = pb.KeyspaceIdType_BYTES
var newServedFroms []*pb.Keyspace_ServedFrom
for _, ksf := range storedK.ServedFroms {
if ksf.TabletType == pb.TabletType_MASTER {
continue
}
if ksf.TabletType == pb.TabletType_REPLICA {
ksf.Keyspace = "test_keyspace4"
}
newServedFroms = append(newServedFroms, ksf)
}
storedK.ServedFroms = newServedFroms
_, err = ts.UpdateKeyspace(ctx, "test_keyspace2", storedK, storedVersion)
if err != nil {
t.Fatalf("UpdateKeyspace: %v", err)
}
storedK, storedVersion, err = ts.GetKeyspace(ctx, "test_keyspace2")
if err != nil {
t.Fatalf("GetKeyspace: %v", err)
}
if storedK.ShardingColumnName != "other_id" ||
storedK.ShardingColumnType != pb.KeyspaceIdType_BYTES ||
len(storedK.ServedFroms) != 1 ||
storedK.ServedFroms[0].TabletType != pb.TabletType_REPLICA ||
storedK.ServedFroms[0].Keyspace != "test_keyspace4" {
t.Errorf("GetKeyspace: unexpected keyspace, got %v", *storedK)
}
}