// isIncluded returns true iff the tablet's keyspace and shard should be
// forwarded to the underlying TabletRecorder.
func (fbs *FilterByShard) isIncluded(tablet *topodatapb.Tablet) bool {
canonical, kr, err := topo.ValidateShardName(tablet.Shard)
if err != nil {
log.Errorf("Error parsing shard name %v, will ignore tablet: %v", tablet.Shard, err)
return false
}
for _, c := range fbs.filters[tablet.Keyspace] {
if canonical == c.shard {
// Exact match (probably a non-sharded keyspace).
return true
}
if kr != nil && c.keyRange != nil && key.KeyRangeIncludes(c.keyRange, kr) {
// Our filter's KeyRange includes the provided KeyRange
return true
}
}
return false
}
// getConn returns the right l2VTGateConn for a given keyspace / shard.
func (lg *l2VTGateGateway) getConn(keyspace, shard string) (*l2VTGateConn, error) {
lg.mu.RLock()
defer lg.mu.RUnlock()
canonical, kr, err := topo.ValidateShardName(shard)
if err != nil {
return nil, fmt.Errorf("invalid shard name: %v", shard)
}
for _, c := range lg.connMap[keyspace] {
if canonical == c.shard {
// Exact match (probably a non-sharded keyspace).
return c, nil
}
if kr != nil && c.keyRange != nil && key.KeyRangeIncludes(c.keyRange, kr) {
// The shard KeyRange is included in this destination's
// KeyRange, that's the destination we want.
return c, nil
}
}
return nil, fmt.Errorf("no configured destination for %v/%v", keyspace, shard)
}