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