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-rw-r--r--src/garage/cli/convert_db.rs69
1 files changed, 69 insertions, 0 deletions
diff --git a/src/garage/cli/convert_db.rs b/src/garage/cli/convert_db.rs
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+++ b/src/garage/cli/convert_db.rs
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+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<Db> {
+ 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(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(),
+ )),
+ }
+}