Add ReadOnly function that returns Option that enables read-only mode in DB.
RO mode can be used by processes that won't modify the DB in order to not
acquire write flock.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Set timeout option of BoltDB Open operation to 3s in order to prevent
indefinite waiting for file lock.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Define NeoFS location database based on BoltDB. Implement methods to save
the record by key (Put) and to read the record by key (Get).
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Define database of Earth's polygons in GeoJSON format. Implement resolving
of geo point to continent in which it is located through point-in-polygon
calculation.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Implement airport database based on csv OpenFlights table. Implement
UN/LOCODE entry matcher. Implement country namespace.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Define structure of keys and records of the location database. Define the
interfaces of all components necessary for the formation of the database.
Implement the function of filling the database.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Define the data types needed to work with LOCODE's in NeoFS (country code,
location code, coordinates). Implement string parsers for new types.
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
