feat: with sled db and capnp

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/churn-server/src/db.rs

@@ -1,3 +1,4 @@
+use core::slice::SlicePattern;
 use std::collections::HashMap;
 
 use std::path::{Path, PathBuf};
@@ -50,30 +51,29 @@ impl DefaultDb {
 
 #[async_trait]
 pub trait DbTrait {
-    async fn insert(&self, namespace: &str, key: &str, value: &str) -> anyhow::Result<()>;
-    async fn get_all(&self, namespace: &str) -> anyhow::Result<Vec<String>>;
+    async fn insert(&self, namespace: &str, key: &str, value: &[u8]) -> anyhow::Result<()>;
+    async fn get_all(&self, namespace: &str) -> anyhow::Result<Vec<Vec<u8>>>;
 }
 
 #[async_trait]
 impl DbTrait for DefaultDb {
-    async fn insert(&self, namespace: &str, key: &str, value: &str) -> anyhow::Result<()> {
+    async fn insert(&self, namespace: &str, key: &str, value: &[u8]) -> anyhow::Result<()> {
         let tree = self.db.open_tree(namespace)?;
 
         tree.insert(key, value)?;
 
-        tree.flush_async().await?;
+        //tree.flush_async().await?;
 
         Ok(())
     }
 
-    async fn get_all(&self, namespace: &str) -> anyhow::Result<Vec<String>> {
+    async fn get_all(&self, namespace: &str) -> anyhow::Result<Vec<Vec<u8>>> {
         let tree = self.db.open_tree(namespace)?;
 
         Ok(tree
             .iter()
             .flatten()
-            .map(|(_, val)| val)
-            .flat_map(|v| v.iter().map(|v| v.to_string()).collect::<Vec<String>>())
+            .map(|(_, val)| val.as_slice().to_vec())
             .collect::<Vec<_>>())
     }
 }