use std::path::PathBuf; use structopt::StructOpt; use garage_db::*; /// K2V command line interface #[derive(StructOpt, Debug)] pub struct ConvertDbOpt { /// Input database path (not the same as metadata_dir, see /// https://garagehq.deuxfleurs.fr/documentation/reference-manual/configuration/#db-engine-since-v0-8-0) #[structopt(short = "i")] input_path: PathBuf, /// Input database engine (sled, lmdb or sqlite; limited by db engines /// enabled in this build) #[structopt(short = "a")] input_engine: String, /// Output database path #[structopt(short = "o")] output_path: PathBuf, /// Output database engine #[structopt(short = "b")] output_engine: String, #[structopt(flatten)] output_open: OpenDbOpt, } /// Open database config overrides #[derive(StructOpt, Debug, Default)] pub struct OpenDbOpt { #[cfg(feature = "lmdb")] #[structopt(flatten)] lmdb: OpenLmdbOpt, } /// Output LMDB database config overrides #[cfg(feature = "lmdb")] #[derive(StructOpt, Debug, Default)] pub struct OpenLmdbOpt { /// Output LMDB map size override /// (supported suffixes: B, KiB, MiB, GiB, TiB, PiB) #[cfg(feature = "lmdb")] #[structopt(long = "lmdb-map-size", name = "bytes", display_order = 1_000)] map_size: Option, } pub(crate) fn do_conversion(args: ConvertDbOpt) -> Result<()> { let input = open_db(args.input_path, args.input_engine, OpenDbOpt::default())?; let output = open_db(args.output_path, args.output_engine, args.output_open)?; output.import(&input)?; Ok(()) } fn open_db(path: PathBuf, engine: String, open: OpenDbOpt) -> Result { match engine.as_str() { #[cfg(feature = "sled")] "sled" => { let db = sled_adapter::sled::Config::default().path(&path).open()?; Ok(sled_adapter::SledDb::init(db)) } #[cfg(feature = "sqlite")] "sqlite" | "sqlite3" | "rusqlite" => { let db = sqlite_adapter::rusqlite::Connection::open(&path)?; db.pragma_update(None, "journal_mode", &"WAL")?; db.pragma_update(None, "synchronous", &"NORMAL")?; Ok(sqlite_adapter::SqliteDb::init(db)) } #[cfg(feature = "lmdb")] "lmdb" | "heed" => { std::fs::create_dir_all(&path).map_err(|e| { Error(format!("Unable to create LMDB data directory: {}", e).into()) })?; let map_size = match open.lmdb.map_size { Some(c) => c.as_u64() as usize, None => lmdb_adapter::recommended_map_size(), }; let mut env_builder = lmdb_adapter::heed::EnvOpenOptions::new(); env_builder.max_dbs(100); env_builder.map_size(map_size); unsafe { env_builder.flag(lmdb_adapter::heed::flags::Flags::MdbNoMetaSync); } let db = env_builder.open(&path)?; Ok(lmdb_adapter::LmdbDb::init(db)) } e => Err(Error( format!("Invalid or unsupported DB engine: {}", e).into(), )), } }