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, } pub(crate) fn do_conversion(args: ConvertDbOpt) -> Result<()> { let input = open_db(args.input_path, args.input_engine)?; let output = open_db(args.output_path, args.output_engine)?; output.import(&input)?; Ok(()) } fn open_db(path: PathBuf, engine: String) -> 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 = 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(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(), )), } }