WIP Implement KVStore for VssStore

We implement the async `KVStore` trait for `VssStore`.

Author: tnull

src/io/vss_store.rs

@@ -10,7 +10,7 @@ use crate::runtime::Runtime;
 
 use bitcoin::hashes::{sha256, Hash, HashEngine, Hmac, HmacEngine};
 use lightning::io::{self, Error, ErrorKind};
-use lightning::util::persist::KVStoreSync;
+use lightning::util::persist::{KVStore, KVStoreSync};
 use prost::Message;
 use rand::RngCore;
 #[cfg(test)]
@@ -31,6 +31,10 @@ use vss_client::util::retry::{
 };
 use vss_client::util::storable_builder::{EntropySource, StorableBuilder};
 
+use std::boxed::Box;
+use std::future::Future;
+use std::pin::Pin;
+
 type CustomRetryPolicy = FilteredRetryPolicy<
 	JitteredRetryPolicy<
 		MaxTotalDelayRetryPolicy<MaxAttemptsRetryPolicy<ExponentialBackoffRetryPolicy<VssError>>>,
@@ -82,6 +86,50 @@ impl KVStoreSync for VssStore {
 	}
 }
 
+impl KVStore for VssStore {
+	fn read(
+		&self, primary_namespace: &str, secondary_namespace: &str, key: &str,
+	) -> Pin<Box<dyn Future<Output = Result<Vec<u8>, io::Error>> + Send>> {
+		let primary_namespace = primary_namespace.to_string();
+		let secondary_namespace = secondary_namespace.to_string();
+		let key = key.to_string();
+		let inner = Arc::clone(&self.inner);
+		Box::pin(async move {
+			inner.read_internal(&primary_namespace, &secondary_namespace, &key).await
+		})
+	}
+	fn write(
+		&self, primary_namespace: &str, secondary_namespace: &str, key: &str, buf: Vec<u8>,
+	) -> Pin<Box<dyn Future<Output = Result<(), io::Error>> + Send>> {
+		let primary_namespace = primary_namespace.to_string();
+		let secondary_namespace = secondary_namespace.to_string();
+		let key = key.to_string();
+		let inner = Arc::clone(&self.inner);
+		Box::pin(async move {
+			inner.write_internal(&primary_namespace, &secondary_namespace, &key, buf).await
+		})
+	}
+	fn remove(
+		&self, primary_namespace: &str, secondary_namespace: &str, key: &str, lazy: bool,
+	) -> Pin<Box<dyn Future<Output = Result<(), io::Error>> + Send>> {
+		let primary_namespace = primary_namespace.to_string();
+		let secondary_namespace = secondary_namespace.to_string();
+		let key = key.to_string();
+		let inner = Arc::clone(&self.inner);
+		Box::pin(async move {
+			inner.remove_internal(&primary_namespace, &secondary_namespace, &key, lazy).await
+		})
+	}
+	fn list(
+		&self, primary_namespace: &str, secondary_namespace: &str,
+	) -> Pin<Box<dyn Future<Output = Result<Vec<String>, io::Error>> + Send>> {
+		let primary_namespace = primary_namespace.to_string();
+		let secondary_namespace = secondary_namespace.to_string();
+		let inner = Arc::clone(&self.inner);
+		Box::pin(async move { inner.list_internal(&primary_namespace, &secondary_namespace).await })
+	}
+}
+
 struct VssStoreInner {
 	client: VssClient<CustomRetryPolicy>,
 	store_id: String,