Add auto-migration from sled to sqlite on startup

swap/src/bin/asb.rs

@@ -29,12 +29,11 @@ use swap::asb::config::{
     initial_setup, query_user_for_initial_config, read_config, Config, ConfigNotInitialized,
 };
 use swap::asb::{cancel, punish, redeem, refund, safely_abort, EventLoop, Finality, KrakenRate};
-use swap::database::SledDatabase;
+use swap::database::open_db;
 use swap::monero::Amount;
 use swap::network::rendezvous::XmrBtcNamespace;
 use swap::network::swarm;
 use swap::protocol::alice::{run, AliceState};
-use swap::protocol::Database;
 use swap::seed::Seed;
 use swap::tor::AuthenticatedClient;
 use swap::{asb, bitcoin, kraken, monero, tor};
@@ -93,10 +92,9 @@ async fn main() -> Result<()> {
     }
 
     let db_path = config.data.dir.join("database");
+    let sled_path = config.data.dir.join(db_path);
 
-    let db = SledDatabase::open(config.data.dir.join(db_path).as_path())
-        .await
-        .context("Could not open database")?;
+    let db = open_db(sled_path, config.data.dir.join("sqlite"), true).await?;
 
     let seed =
         Seed::from_file_or_generate(&config.data.dir).expect("Could not retrieve/initialize seed");
@@ -180,7 +178,7 @@ async fn main() -> Result<()> {
                 env_config,
                 Arc::new(bitcoin_wallet),
                 Arc::new(monero_wallet),
-                Arc::new(db),
+                db,
                 kraken_rate.clone(),
                 config.maker.min_buy_btc,
                 config.maker.max_buy_btc,
@@ -252,7 +250,7 @@ async fn main() -> Result<()> {
         Command::Cancel { swap_id } => {
             let bitcoin_wallet = init_bitcoin_wallet(&config, &seed, env_config).await?;
 
-            let (txid, _) = cancel(swap_id, Arc::new(bitcoin_wallet), Arc::new(db)).await?;
+            let (txid, _) = cancel(swap_id, Arc::new(bitcoin_wallet), db).await?;
 
             tracing::info!("Cancel transaction successfully published with id {}", txid);
         }
@@ -264,7 +262,7 @@ async fn main() -> Result<()> {
                 swap_id,
                 Arc::new(bitcoin_wallet),
                 Arc::new(monero_wallet),
-                Arc::new(db),
+                db,
             )
             .await?;
 
@@ -273,12 +271,12 @@ async fn main() -> Result<()> {
         Command::Punish { swap_id } => {
             let bitcoin_wallet = init_bitcoin_wallet(&config, &seed, env_config).await?;
 
-            let (txid, _) = punish(swap_id, Arc::new(bitcoin_wallet), Arc::new(db)).await?;
+            let (txid, _) = punish(swap_id, Arc::new(bitcoin_wallet), db).await?;
 
             tracing::info!("Punish transaction successfully published with id {}", txid);
         }
         Command::SafelyAbort { swap_id } => {
-            safely_abort(swap_id, Arc::new(db)).await?;
+            safely_abort(swap_id, db).await?;
 
             tracing::info!("Swap safely aborted");
         }
@@ -291,7 +289,7 @@ async fn main() -> Result<()> {
             let (txid, _) = redeem(
                 swap_id,
                 Arc::new(bitcoin_wallet),
-                Arc::new(db),
+                db,
                 Finality::from_bool(do_not_await_finality),
             )
             .await?;

swap/src/bin/swap.rs

@@ -26,13 +26,13 @@ use std::time::Duration;
 use swap::bitcoin::TxLock;
 use swap::cli::command::{parse_args_and_apply_defaults, Arguments, Command, ParseResult};
 use swap::cli::{list_sellers, EventLoop, SellerStatus};
-use swap::database::SledDatabase;
+use swap::database::open_db;
 use swap::env::Config;
 use swap::libp2p_ext::MultiAddrExt;
 use swap::network::quote::BidQuote;
 use swap::network::swarm;
+use swap::protocol::bob;
 use swap::protocol::bob::{BobState, Swap};
-use swap::protocol::{bob, Database};
 use swap::seed::Seed;
 use swap::{bitcoin, cli, monero};
 use url::Url;
@@ -54,11 +54,7 @@ async fn main() -> Result<()> {
         }
     };
 
-    let db = Arc::new(
-        SledDatabase::open(data_dir.join("database").as_path())
-            .await
-            .context("Failed to open database")?,
-    );
+    let db = open_db(data_dir.join("database"), data_dir.join("sqlite"), true).await?;
 
     match cmd {
         Command::BuyXmr {

swap/src/database.rs

@@ -3,10 +3,13 @@ pub use alice::Alice;
 pub use bob::Bob;
 pub use sqlite::SqliteDatabase;
 
-use crate::protocol::State;
+use crate::fs::ensure_directory_exists;
+use crate::protocol::{Database, State};
 use anyhow::{bail, Result};
 use serde::{Deserialize, Serialize};
 use std::fmt::Display;
+use std::path::Path;
+use std::sync::Arc;
 
 mod alice;
 mod bob;
@@ -81,3 +84,75 @@ impl Swap {
         }
     }
 }
+
+pub async fn open_db(
+    sled_path: impl AsRef<Path>,
+    sqlite_path: impl AsRef<Path>,
+    force_sled: bool,
+) -> Result<Arc<dyn Database + Send + Sync>> {
+    // if sled exists and sqlite doesnt exist try and migrate
+    // if sled and sqlite exists and the sled flag is set, use sled
+    // if sled and sqlite exists, use sqlite
+    match (
+        sled_path.as_ref().exists(),
+        sqlite_path.as_ref().exists(),
+        force_sled,
+    ) {
+        (true, false, false) => {
+            tracing::info!("Attempting to migrate old data to the new sqlite database...");
+            let sled_db = SledDatabase::open(sled_path.as_ref()).await?;
+
+            ensure_directory_exists(sqlite_path.as_ref())?;
+            tokio::fs::File::create(&sqlite_path).await?;
+            let sqlite = SqliteDatabase::open(sqlite_path).await?;
+
+            let swap_states = sled_db.all().await?;
+            for (swap_id, state) in swap_states.iter() {
+                sqlite.insert_latest_state(*swap_id, state.clone()).await?;
+            }
+
+            let monero_addresses = sled_db.get_all_monero_addresses();
+            for (swap_id, monero_address) in monero_addresses.flatten() {
+                sqlite
+                    .insert_monero_address(swap_id, monero_address)
+                    .await?;
+            }
+
+            let peer_addresses = sled_db.get_all_addresses();
+            for (peer_id, addresses) in peer_addresses.flatten() {
+                for address in addresses {
+                    sqlite.insert_address(peer_id, address).await?;
+                }
+            }
+
+            let peers = sled_db.get_all_peers();
+            for (swap_id, peer_id) in peers.flatten() {
+                sqlite.insert_peer_id(swap_id, peer_id).await?;
+            }
+
+            tracing::info!("Sucessfully migrated data to sqlite! Using sqlite.");
+
+            Ok(Arc::new(sqlite))
+        }
+        (_, false, false) => {
+            tracing::debug!("Creating and using new sqlite database.");
+            ensure_directory_exists(sqlite_path.as_ref())?;
+            tokio::fs::File::create(&sqlite_path).await?;
+            let sqlite = SqliteDatabase::open(sqlite_path).await?;
+            Ok(Arc::new(sqlite))
+        }
+        (_, true, false) => {
+            tracing::debug!("Using existing sqlite database.");
+            let sqlite = SqliteDatabase::open(sqlite_path).await?;
+            Ok(Arc::new(sqlite))
+        }
+        (false, _, true) => {
+            bail!("Sled database does not exist at specified location")
+        }
+        (true, _, true) => {
+            tracing::debug!("Sled flag set. Using sled database.");
+            let sled = SledDatabase::open(sled_path.as_ref()).await?;
+            Ok(Arc::new(sled))
+        }
+    }
+}

swap/src/database/sqlite.rs

@@ -22,10 +22,12 @@ impl SqliteDatabase {
     {
         let path_str = format!("sqlite:{}", path.as_ref().display());
         let pool = SqlitePool::connect(&path_str).await?;
-        Ok(Self { pool })
+        let mut sqlite = Self { pool };
+        sqlite.run_migrations().await?;
+        Ok(sqlite)
     }
 
-    pub async fn run_migrations(&mut self) -> anyhow::Result<()> {
+    async fn run_migrations(&mut self) -> anyhow::Result<()> {
         sqlx::migrate!("./migrations").run(&self.pool).await?;
         Ok(())
     }
@@ -374,9 +376,7 @@ mod tests {
         // file has to exist in order to connect with sqlite
         File::create(temp_db.clone()).unwrap();
 
-        let mut db = SqliteDatabase::open(temp_db).await?;
-
-        db.run_migrations().await.unwrap();
+        let db = SqliteDatabase::open(temp_db).await?;
 
         Ok(db)
     }