Add admin endpoint to fetch identifier from an alias

src/main.rs

@@ -954,6 +954,19 @@ async fn aliases<R: FullRepo>(
     })))
 }
 
+async fn identifier<R: FullRepo, S: Store>(
+    query: web::Query<AliasQuery>,
+    repo: web::Data<R>,
+) -> Result<HttpResponse, Error> {
+    let alias = query.into_inner().alias;
+    let identifier = repo.identifier_from_alias::<S::Identifier>(&alias).await?;
+
+    Ok(HttpResponse::Ok().json(&serde_json::json!({
+        "msg": "ok",
+        "identifier": identifier.string_repr(),
+    })))
+}
+
 fn transform_error(error: actix_form_data::Error) -> actix_web::Error {
     let error: Error = error.into();
     let error: actix_web::Error = error.into();
@@ -1070,7 +1083,11 @@ async fn launch<R: FullRepo + 'static, SC: StoreConfig + 'static>(
                         web::resource("/variants").route(web::delete().to(clean_variants::<R>)),
                     )
                     .service(web::resource("/purge").route(web::post().to(purge::<R>)))
-                    .service(web::resource("/aliases").route(web::get().to(aliases::<R>))),
+                    .service(web::resource("/aliases").route(web::get().to(aliases::<R>)))
+                    .service(
+                        web::resource("/identifier")
+                            .route(web::get().to(identifier::<R, SC::Store>)),
+                    ),
             )
     })
     .bind(CONFIG.server.address)?

src/repo.rs

@@ -850,6 +850,10 @@ impl Identifier for Vec<u8> {
     fn to_bytes(&self) -> Result<Vec<u8>, Error> {
         Ok(self.clone())
     }
+
+    fn string_repr(&self) -> String {
+        base64::encode(self.as_slice())
+    }
 }
 
 #[cfg(test)]

src/store.rs

@@ -13,6 +13,8 @@ pub(crate) trait Identifier: Send + Sync + Clone + Debug {
     fn from_bytes(bytes: Vec<u8>) -> Result<Self, Error>
     where
         Self: Sized;
+
+    fn string_repr(&self) -> String;
 }
 
 pub(crate) trait StoreConfig: Send + Sync + Clone {

src/store/file_store/file_id.rs

@@ -32,6 +32,10 @@ impl Identifier for FileId {
 
         Ok(id)
     }
+
+    fn string_repr(&self) -> String {
+        self.0.to_string_lossy().into_owned()
+    }
 }
 
 impl FileId {

src/store/object_store/object_id.rs

@@ -16,6 +16,10 @@ impl Identifier for ObjectId {
             String::from_utf8(bytes).map_err(ObjectError::from)?,
         ))
     }
+
+    fn string_repr(&self) -> String {
+        self.0.clone()
+    }
 }
 
 impl ObjectId {