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authorAlex <alex@adnab.me>2024-01-24 08:19:45 +0000
committerAlex <alex@adnab.me>2024-01-24 08:19:45 +0000
commit08a871390e44751eb03f75189aa40ea2f84a9ffb (patch)
tree497787389b379bea8a858d5f587d834f0921b262 /src/db/lib.rs
parent7a3b863150bfbf1d681cab673b8c99307cf9d5d2 (diff)
parent0eef8a69f0006de305281dd374cc63e7a46e4b80 (diff)
downloadgarage-08a871390e44751eb03f75189aa40ea2f84a9ffb.tar.gz
garage-08a871390e44751eb03f75189aa40ea2f84a9ffb.zip
Merge pull request 'convert_db: allow LMDB map size override' (#691) from zdenek.crha/garage:convert_db_lmdb_map_size into main
Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/691
Diffstat (limited to 'src/db/lib.rs')
-rw-r--r--src/db/lib.rs42
1 files changed, 42 insertions, 0 deletions
diff --git a/src/db/lib.rs b/src/db/lib.rs
index fe44b01e..eef3e177 100644
--- a/src/db/lib.rs
+++ b/src/db/lib.rs
@@ -171,6 +171,48 @@ impl Db {
}
}
+/// List of supported database engine types
+///
+/// The `enum` holds list of *all* database engines that are are be supported by crate, no matter
+/// if relevant feature is enabled or not. It allows us to distinguish between invalid engine
+/// and valid engine, whose support is not enabled via feature flag.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum Engine {
+ Lmdb,
+ Sqlite,
+ Sled,
+}
+
+impl Engine {
+ /// Return variant name as static `&str`
+ pub fn as_str(&self) -> &'static str {
+ match self {
+ Self::Lmdb => "lmdb",
+ Self::Sqlite => "sqlite",
+ Self::Sled => "sled",
+ }
+ }
+}
+
+impl std::fmt::Display for Engine {
+ fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
+ self.as_str().fmt(fmt)
+ }
+}
+
+impl std::str::FromStr for Engine {
+ type Err = Error;
+
+ fn from_str(text: &str) -> Result<Engine> {
+ match text {
+ "lmdb" | "heed" => Ok(Self::Lmdb),
+ "sqlite" | "sqlite3" | "rusqlite" => Ok(Self::Sqlite),
+ "sled" => Ok(Self::Sled),
+ kind => Err(Error(format!("Invalid DB engine: {}", kind).into())),
+ }
+ }
+}
+
#[allow(clippy::len_without_is_empty)]
impl Tree {
#[inline]