Esempio n. 1
0
// normalizeMeasurement inserts the default database or policy into all measurement names,
// if required.
func (q *QueryExecutor) normalizeMeasurement(m *influxql.Measurement, defaultDatabase string) error {
	// Targets (measurements in an INTO clause) can have blank names, which means it will be
	// the same as the measurement name it came from in the FROM clause.
	if !m.IsTarget && m.Name == "" && m.Regex == nil {
		return errors.New("invalid measurement")
	}

	// Measurement does not have an explicit database? Insert default.
	if m.Database == "" {
		m.Database = defaultDatabase
	}

	// The database must now be specified by this point.
	if m.Database == "" {
		return errors.New("database name required")
	}

	// Find database.
	di, err := q.MetaStore.Database(m.Database)
	if err != nil {
		return err
	} else if di == nil {
		return ErrDatabaseNotFound(m.Database)
	}

	// If no retention policy was specified, use the default.
	if m.RetentionPolicy == "" {
		if di.DefaultRetentionPolicy == "" {
			return fmt.Errorf("default retention policy not set for: %s", di.Name)
		}
		m.RetentionPolicy = di.DefaultRetentionPolicy
	}

	return nil
}
Esempio n. 2
0
// normalizeMeasurement inserts the default database or policy into all measurement names,
// if required.
func (q *QueryExecutor) normalizeMeasurement(m *influxql.Measurement, defaultDatabase string) error {
	if m.Name == "" && m.Regex == nil {
		return errors.New("invalid measurement")
	}

	// Measurement does not have an explicit database? Insert default.
	if m.Database == "" {
		m.Database = defaultDatabase
	}

	// The database must now be specified by this point.
	if m.Database == "" {
		return errors.New("database name required")
	}

	// Find database.
	di, err := q.MetaStore.Database(m.Database)
	if err != nil {
		return err
	} else if di == nil {
		return ErrDatabaseNotFound(m.Database)
	}

	// If no retention policy was specified, use the default.
	if m.RetentionPolicy == "" {
		if di.DefaultRetentionPolicy == "" {
			return fmt.Errorf("default retention policy not set for: %s", di.Name)
		}
		m.RetentionPolicy = di.DefaultRetentionPolicy
	}

	return nil
}