add sled

Cargo.toml

@@ -13,11 +13,12 @@ edition = "2021"
 build = "build.rs"
 
 [features]
-default = ["metrics", "rocksdb", "redb"]
+default = ["metrics", "rocksdb", "redb", "sled"]
 metrics = ["prometheus", "tiny_http"]
 metrics_process = ["prometheus/process"]
 rocksdb = ["dep:electrs-rocksdb"]
 redb = ["dep:redb"]
+sled = ["dep:sled"]
 
 [package.metadata.configure_me]
 spec = "internal/config_specification.toml"
@@ -41,6 +42,7 @@ serde_json = "1.0"
 signal-hook = "0.3"
 tiny_http = { version = "0.12", optional = true }
 redb = { version = "2.1.0", optional = true }
+sled = { version = "0.34.7", optional = true }
 
 [dependencies.electrs-rocksdb]
 version = "0.19.0-e3"

internal/config_specification.toml

@@ -149,5 +149,5 @@ doc = "network magic for custom signet network in hex format, as found in Bitcoi
 [[param]]
 name = "database"
 type = "crate::config::DatabaseType"
-doc = "Select database type ('rocksdb' or 'redb')"
+doc = "Select database type ('rocksdb', 'redb' or 'sled')"
 default = "Default::default()"

src/config.rs

@@ -126,6 +126,7 @@ pub enum DatabaseType {
     #[default]
     RocksDB,
     ReDB,
+    Sled,
 }
 
 impl FromStr for DatabaseType {
@@ -135,14 +136,15 @@ impl FromStr for DatabaseType {
         Ok(match s {
             "rocksdb" => Self::RocksDB,
             "redb" => Self::ReDB,
+            "sled" => Self::Sled,
             _ => return Err(UnknownDatabaseTypeError(s.to_owned())),
         })
     }
 }
 
 impl ::configure_me::parse_arg::ParseArgFromStr for DatabaseType {
     fn describe_type<W: fmt::Write>(mut writer: W) -> fmt::Result {
-        write!(writer, "either 'rocksdb' or 'redb'")
+        write!(writer, "either 'rocksdb', 'redb' or 'sled'")
     }
 }
 
@@ -151,6 +153,7 @@ impl fmt::Display for DatabaseType {
         match self {
             Self::RocksDB => write!(f, "rocksdb"),
             Self::ReDB => write!(f, "redb"),
+            Self::Sled => write!(f, "sled"),
         }
     }
 }

src/db/mod.rs

@@ -4,10 +4,13 @@ pub mod rocksdb;
 #[cfg(feature = "redb")]
 pub mod redb;
 
-#[cfg(not(any(feature = "rocksdb", feature = "redb",)))]
+#[cfg(feature = "sled")]
+pub mod sled;
+
+#[cfg(not(any(feature = "rocksdb", feature = "redb", feature = "sled",)))]
 compile_error!(
     "Tried to build electrs without database, but at least one is needed. \
-     Enable at least one of the following features: 'rocksdb', 'redb'."
+     Enable at least one of the following features: 'rocksdb', 'redb', 'sled'."
 );
 
 use anyhow::Result;