2

backend/src/storage.rs

@@ -16,6 +16,8 @@ pub trait ObjectStorage: Send + Sync + 'static {
     ) -> Result<()>;
 
     async fn presign_get_object(&self, key: &str, expires_in: Duration) -> Result<String>;
+
+    async fn get_object(&self, key: &str) -> Result<Vec<u8>>;
 }
 
 pub struct S3Storage {
@@ -76,4 +78,25 @@ impl ObjectStorage for S3Storage {
 
         Ok(presigned.uri().to_string())
     }
+
+    async fn get_object(&self, key: &str) -> Result<Vec<u8>> {
+        let response = self
+            .client
+            .get_object()
+            .bucket(&self.bucket)
+            .key(key)
+            .send()
+            .await
+            .context("failed to download object from S3")?;
+
+        let bytes = response
+            .body
+            .collect()
+            .await
+            .context("failed to read object stream")?
+            .into_bytes()
+            .to_vec();
+
+        Ok(bytes)
+    }
 }