// UpdateTabletEndpoints fixes up any entries in the serving graph that relate
// to a given tablet.
func UpdateTabletEndpoints(ctx context.Context, ts topo.Server, tablet *topo.Tablet) (err error) {
if *lockSrvShard {
// This lock is only necessary until all tablets are upgraded to lock-free.
actionNode := actionnode.RebuildSrvShard()
lockPath, err := actionNode.LockSrvShard(ctx, ts, tablet.Alias.Cell, tablet.Keyspace, tablet.Shard)
if err != nil {
return fmt.Errorf("can't lock shard for UpdateTabletEndpoints(%v): %v", tablet, err)
}
defer func() {
actionNode.UnlockSrvShard(ctx, ts, tablet.Alias.Cell, tablet.Keyspace, tablet.Shard, lockPath, err)
}()
}
srvTypes, err := ts.GetSrvTabletTypesPerShard(ctx, tablet.Alias.Cell, tablet.Keyspace, tablet.Shard)
if err != nil {
if err != topo.ErrNoNode {
return err
}
// It's fine if there are no existing types.
srvTypes = nil
}
wg := sync.WaitGroup{}
errs := concurrency.AllErrorRecorder{}
// Update the list that the tablet is supposed to be in (if any).
if tablet.IsInServingGraph() {
endpoint, err := tablet.EndPoint()
if err != nil {
return err
}
wg.Add(1)
go func() {
defer wg.Done()
errs.RecordError(
updateEndpoint(ctx, ts, tablet.Alias.Cell, tablet.Keyspace, tablet.Shard,
tablet.Type, endpoint))
}()
}
// Remove it from any other lists it isn't supposed to be in.
for _, srvType := range srvTypes {
if srvType != tablet.Type {
wg.Add(1)
go func(tabletType topo.TabletType) {
defer wg.Done()
errs.RecordError(
removeEndpoint(ctx, ts, tablet.Alias.Cell, tablet.Keyspace, tablet.Shard,
tabletType, tablet.Alias.Uid))
}(srvType)
}
}
wg.Wait()
return errs.Error()
}
// UpdateTabletEndpoints fixes up any entries in the serving graph that relate
// to a given tablet.
func UpdateTabletEndpoints(ctx context.Context, ts topo.Server, tablet *topo.Tablet) (err error) {
srvTypes, err := ts.GetSrvTabletTypesPerShard(ctx, tablet.Alias.Cell, tablet.Keyspace, tablet.Shard)
if err != nil {
if err != topo.ErrNoNode {
return err
}
// It's fine if there are no existing types.
srvTypes = nil
}
wg := sync.WaitGroup{}
errs := concurrency.AllErrorRecorder{}
// Update the list that the tablet is supposed to be in (if any).
if tablet.IsInServingGraph() {
endpoint, err := tablet.EndPoint()
if err != nil {
return err
}
wg.Add(1)
go func() {
defer wg.Done()
errs.RecordError(
updateEndpoint(ctx, ts, tablet.Alias.Cell, tablet.Keyspace, tablet.Shard,
tablet.Type, endpoint))
}()
}
// Remove it from any other lists it isn't supposed to be in.
for _, srvType := range srvTypes {
if srvType != tablet.Type {
wg.Add(1)
go func(tabletType topo.TabletType) {
defer wg.Done()
errs.RecordError(
removeEndpoint(ctx, ts, tablet.Alias.Cell, tablet.Keyspace, tablet.Shard,
tabletType, tablet.Alias.Uid))
}(srvType)
}
}
wg.Wait()
return errs.Error()
}