Add empty postgres KvStore implementation.

Author: G8XSU

rust/impls/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "impls"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+async-trait = "0.1.77"
+api = { path = "../api" }

rust/impls/src/lib.rs

@@ -0,0 +1 @@
+pub mod postgres_store;

rust/impls/src/postgres_store.rs

@@ -0,0 +1,43 @@
+use api::error::VssError;
+use api::kv_store::KvStore;
+use api::types::{
+	DeleteObjectRequest, DeleteObjectResponse, GetObjectRequest, GetObjectResponse,
+	ListKeyVersionsRequest, ListKeyVersionsResponse, PutObjectRequest, PutObjectResponse,
+};
+use async_trait::async_trait;
+use std::io::Error;
+
+pub struct PostgresBackendImpl {}
+
+impl PostgresBackendImpl {
+	pub async fn new(dsn: &str) -> Result<Self, Error> {
+		todo!("pending implementation.");
+	}
+}
+
+#[async_trait]
+impl KvStore for PostgresBackendImpl {
+	async fn get(
+		&self, user_token: String, request: GetObjectRequest,
+	) -> Result<GetObjectResponse, VssError> {
+		todo!("pending implementation.");
+	}
+
+	async fn put(
+		&self, user_token: String, request: PutObjectRequest,
+	) -> Result<PutObjectResponse, VssError> {
+		todo!("pending implementation.");
+	}
+
+	async fn delete(
+		&self, user_token: String, request: DeleteObjectRequest,
+	) -> Result<DeleteObjectResponse, VssError> {
+		todo!("pending implementation.");
+	}
+
+	async fn list_key_versions(
+		&self, user_token: String, request: ListKeyVersionsRequest,
+	) -> Result<ListKeyVersionsResponse, VssError> {
+		todo!("pending implementation.");
+	}
+}