// DeleteMeasurement removes a measurement and all associated series from a database.
func (s *Store) DeleteMeasurement(database, name string) error {
s.mu.Lock()
defer s.mu.Unlock()
// Find the database.
db := s.databaseIndexes[database]
if db == nil {
return nil
}
// Find the measurement.
m := db.Measurement(name)
if m == nil {
return influxql.ErrMeasurementNotFound(name)
}
// Remove measurement from index.
db.DropMeasurement(m.Name)
// Remove underlying data.
for _, sh := range s.shards {
if sh.database != database {
continue
}
if err := sh.DeleteMeasurement(m.Name, m.SeriesKeys()); err != nil {
return err
}
}
return nil
}
// DeleteMeasurement removes a measurement and all associated series from a database.
func (s *Store) DeleteMeasurement(database, name string) error {
// Find the database.
s.mu.RLock()
db := s.databaseIndexes[database]
s.mu.RUnlock()
if db == nil {
return nil
}
// Find the measurement.
m := db.Measurement(name)
if m == nil {
return influxql.ErrMeasurementNotFound(name)
}
seriesKeys := m.SeriesKeys()
s.mu.RLock()
shards := s.filterShards(func(sh *Shard) bool {
return sh.database == database
})
s.mu.RUnlock()
if err := s.walkShards(shards, func(sh *Shard) error {
if err := sh.DeleteMeasurement(m.Name, seriesKeys); err != nil {
return err
}
return nil
}); err != nil {
return err
}
// Remove measurement from index.
db.DropMeasurement(m.Name)
return nil
}