feat: redb localstore

crates/cashu-sdk/Cargo.toml

@@ -35,6 +35,7 @@ gloo = { version = "0.10.0", optional = true, features = ["net"] }
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 tokio = { workspace = true, features = ["rt-multi-thread", "time", "macros", "sync"] }
 minreq = { version = "2.7.0", optional = true, features = ["json-using-serde", "https"] }
+redb = "1.4.0"
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 tokio = { workspace = true, features = ["rt", "macros", "sync", "time"] }

crates/cashu-sdk/src/lib.rs

@@ -20,6 +20,8 @@ pub mod wallet;
 
 pub use bip39::Mnemonic;
 pub use cashu::{self, *};
+#[cfg(not(target_arch = "wasm32"))]
+pub use localstore::redb_store::RedbLocalStore;
 
 #[cfg(feature = "blocking")]
 static RUNTIME: Lazy<Runtime> = Lazy::new(|| Runtime::new().expect("Can't start Tokio runtime"));

crates/cashu-sdk/src/localstore/mod.rs

@@ -1,4 +1,8 @@
 mod memory;
+
+#[cfg(not(target_arch = "wasm32"))]
+pub mod redb_store;
+
 use async_trait::async_trait;
 use cashu::nuts::{Id, KeySetInfo, Keys, MintInfo, Proofs};
 use cashu::types::{MeltQuote, MintQuote};
@@ -6,7 +10,22 @@ use cashu::url::UncheckedUrl;
 use thiserror::Error;
 
 #[derive(Debug, Error)]
-pub enum Error {}
+pub enum Error {
+    #[error("`{0}`")]
+    Redb(#[from] redb::Error),
+    #[error("`{0}`")]
+    Database(#[from] redb::DatabaseError),
+    #[error("`{0}`")]
+    Transaction(#[from] redb::TransactionError),
+    #[error("`{0}`")]
+    Commit(#[from] redb::CommitError),
+    #[error("`{0}`")]
+    Table(#[from] redb::TableError),
+    #[error("`{0}`")]
+    Storage(#[from] redb::StorageError),
+    #[error("`{0}`")]
+    Serde(#[from] serde_json::Error),
+}
 
 #[async_trait(?Send)]
 pub trait LocalStore {

crates/cashu-sdk/src/localstore/redb_store.rs

@@ -0,0 +1,301 @@
+use std::sync::Arc;
+
+use async_trait::async_trait;
+use cashu::nuts::{Id, KeySetInfo, Keys, MintInfo, Proofs};
+use cashu::types::{MeltQuote, MintQuote};
+use cashu::url::UncheckedUrl;
+use redb::{
+    Database, MultimapTableDefinition, ReadableMultimapTable, ReadableTable, TableDefinition,
+};
+use tokio::sync::Mutex;
+
+use super::{Error, LocalStore};
+
+const MINTS_TABLE: TableDefinition<&str, &str> = TableDefinition::new("mints_table");
+const MINT_KEYSETS_TABLE: MultimapTableDefinition<&str, &str> =
+    MultimapTableDefinition::new("mint_keysets");
+const MINT_QUOTES_TABLE: TableDefinition<&str, &str> = TableDefinition::new("mint_quotes");
+const MELT_QUOTES_TABLE: TableDefinition<&str, &str> = TableDefinition::new("melt_quotes");
+const MINT_KEYS_TABLE: TableDefinition<&str, &str> = TableDefinition::new("mint_keys");
+const PROOFS_TABLE: MultimapTableDefinition<&str, &str> = MultimapTableDefinition::new("proofs");
+
+#[derive(Debug, Clone)]
+pub struct RedbLocalStore {
+    db: Arc<Mutex<Database>>,
+}
+
+impl RedbLocalStore {
+    pub fn new(path: &str) -> Result<Self, Error> {
+        let db = Database::create(path)?;
+
+        let write_txn = db.begin_write()?;
+        {
+            let _ = write_txn.open_table(MINTS_TABLE)?;
+            let _ = write_txn.open_multimap_table(MINT_KEYSETS_TABLE)?;
+            let _ = write_txn.open_table(MINT_QUOTES_TABLE)?;
+            let _ = write_txn.open_table(MELT_QUOTES_TABLE)?;
+            let _ = write_txn.open_table(MINT_KEYS_TABLE)?;
+            let _ = write_txn.open_multimap_table(PROOFS_TABLE)?;
+        }
+        write_txn.commit()?;
+
+        Ok(Self {
+            db: Arc::new(Mutex::new(db)),
+        })
+    }
+}
+
+#[async_trait(?Send)]
+impl LocalStore for RedbLocalStore {
+    async fn add_mint(
+        &self,
+        mint_url: UncheckedUrl,
+        mint_info: Option<MintInfo>,
+    ) -> Result<(), Error> {
+        let db = self.db.lock().await;
+
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_table(MINTS_TABLE)?;
+            table.insert(
+                mint_url.to_string().as_str(),
+                serde_json::to_string(&mint_info)?.as_str(),
+            )?;
+        }
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn get_mint(&self, mint_url: UncheckedUrl) -> Result<Option<MintInfo>, Error> {
+        let db = self.db.lock().await;
+        let read_txn = db.begin_read()?;
+        let table = read_txn.open_table(MINTS_TABLE)?;
+
+        if let Some(mint_info) = table.get(mint_url.to_string().as_str())? {
+            return Ok(serde_json::from_str(mint_info.value())?);
+        }
+
+        Ok(None)
+    }
+
+    async fn add_mint_keysets(
+        &self,
+        mint_url: UncheckedUrl,
+        keysets: Vec<KeySetInfo>,
+    ) -> Result<(), Error> {
+        let db = self.db.lock().await;
+
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_multimap_table(MINT_KEYSETS_TABLE)?;
+
+            for keyset in keysets {
+                table.insert(
+                    mint_url.to_string().as_str(),
+                    serde_json::to_string(&keyset)?.as_str(),
+                )?;
+            }
+        }
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn get_mint_keysets(
+        &self,
+        mint_url: UncheckedUrl,
+    ) -> Result<Option<Vec<KeySetInfo>>, Error> {
+        let db = self.db.lock().await;
+        let read_txn = db.begin_read()?;
+        let table = read_txn.open_multimap_table(MINT_KEYSETS_TABLE)?;
+
+        let keysets = table
+            .get(mint_url.to_string().as_str())?
+            .flatten()
+            .flat_map(|k| serde_json::from_str(k.value()))
+            .collect();
+
+        Ok(keysets)
+    }
+
+    async fn add_mint_quote(&self, quote: MintQuote) -> Result<(), Error> {
+        let db = self.db.lock().await;
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_table(MINT_QUOTES_TABLE)?;
+            table.insert(quote.id.as_str(), serde_json::to_string(&quote)?.as_str())?;
+        }
+
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn get_mint_quote(&self, quote_id: &str) -> Result<Option<MintQuote>, Error> {
+        let db = self.db.lock().await;
+        let read_txn = db.begin_read()?;
+        let table = read_txn.open_table(MINT_QUOTES_TABLE)?;
+
+        if let Some(mint_info) = table.get(quote_id)? {
+            return Ok(serde_json::from_str(mint_info.value())?);
+        }
+
+        Ok(None)
+    }
+
+    async fn remove_mint_quote(&self, quote_id: &str) -> Result<(), Error> {
+        let db = self.db.lock().await;
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_table(MINT_QUOTES_TABLE)?;
+            table.remove(quote_id)?;
+        }
+
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn add_melt_quote(&self, quote: MeltQuote) -> Result<(), Error> {
+        let db = self.db.lock().await;
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_table(MELT_QUOTES_TABLE)?;
+            table.insert(quote.id.as_str(), serde_json::to_string(&quote)?.as_str())?;
+        }
+
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn get_melt_quote(&self, quote_id: &str) -> Result<Option<MeltQuote>, Error> {
+        let db = self.db.lock().await;
+        let read_txn = db.begin_read()?;
+        let table = read_txn.open_table(MELT_QUOTES_TABLE)?;
+
+        if let Some(mint_info) = table.get(quote_id)? {
+            return Ok(serde_json::from_str(mint_info.value())?);
+        }
+
+        Ok(None)
+    }
+
+    async fn remove_melt_quote(&self, quote_id: &str) -> Result<(), Error> {
+        let db = self.db.lock().await;
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_table(MELT_QUOTES_TABLE)?;
+            table.remove(quote_id)?;
+        }
+
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn add_keys(&self, keys: Keys) -> Result<(), Error> {
+        let db = self.db.lock().await;
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_table(MINT_KEYS_TABLE)?;
+            table.insert(
+                Id::from(&keys).to_string().as_str(),
+                serde_json::to_string(&keys)?.as_str(),
+            )?;
+        }
+
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn get_keys(&self, id: &Id) -> Result<Option<Keys>, Error> {
+        let db = self.db.lock().await;
+        let read_txn = db.begin_read()?;
+        let table = read_txn.open_table(MINT_KEYS_TABLE)?;
+
+        if let Some(mint_info) = table.get(id.to_string().as_str())? {
+            return Ok(serde_json::from_str(mint_info.value())?);
+        }
+
+        Ok(None)
+    }
+
+    async fn remove_keys(&self, id: &Id) -> Result<(), Error> {
+        let db = self.db.lock().await;
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_table(MINT_KEYS_TABLE)?;
+
+            table.remove(id.to_string().as_str())?;
+        }
+
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn add_proofs(&self, mint_url: UncheckedUrl, proofs: Proofs) -> Result<(), Error> {
+        let db = self.db.lock().await;
+
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_multimap_table(PROOFS_TABLE)?;
+
+            for proof in proofs {
+                table.insert(
+                    mint_url.to_string().as_str(),
+                    serde_json::to_string(&proof)?.as_str(),
+                )?;
+            }
+        }
+        write_txn.commit()?;
+
+        Ok(())
+    }
+
+    async fn get_proofs(&self, mint_url: UncheckedUrl) -> Result<Option<Proofs>, Error> {
+        let db = self.db.lock().await;
+        let read_txn = db.begin_read()?;
+        let table = read_txn.open_multimap_table(PROOFS_TABLE)?;
+
+        let proofs = table
+            .get(mint_url.to_string().as_str())?
+            .flatten()
+            .flat_map(|k| serde_json::from_str(k.value()))
+            .collect();
+
+        Ok(proofs)
+    }
+
+    async fn remove_proofs(&self, mint_url: UncheckedUrl, proofs: &Proofs) -> Result<(), Error> {
+        let db = self.db.lock().await;
+
+        let write_txn = db.begin_write()?;
+
+        {
+            let mut table = write_txn.open_multimap_table(PROOFS_TABLE)?;
+
+            for proof in proofs {
+                table.remove(
+                    mint_url.to_string().as_str(),
+                    serde_json::to_string(&proof)?.as_str(),
+                )?;
+            }
+        }
+        write_txn.commit()?;
+
+        Ok(())
+    }
+}