feat: introduce ApiError for improved error handling in upstream routes

apps/api/src/errors.rs

@@ -1 +1,2 @@
+pub mod api_error;
 pub mod service_error;

apps/api/src/errors/api_error.rs

@@ -0,0 +1,21 @@
+use axum::response::IntoResponse;
+
+use crate::errors::service_error::ServiceError;
+
+pub enum ApiError {
+    ServiceError(ServiceError),
+}
+
+impl From<ServiceError> for ApiError {
+    fn from(err: ServiceError) -> Self {
+        ApiError::ServiceError(err)
+    }
+}
+
+impl IntoResponse for ApiError {
+    fn into_response(self) -> axum::response::Response {
+        match self {
+            ApiError::ServiceError(service_error) => service_error.into_response(),
+        }
+    }
+}

apps/api/src/routes/api/restricted/nginx/upstream/get_upstream.rs

@@ -9,7 +9,7 @@ use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 
 use crate::{
-    errors::service_error::ServiceError,
+    errors::{api_error::ApiError, service_error::ServiceError},
     routes::{
         AppState,
         api::{
@@ -64,7 +64,7 @@ pub async fn get_upstream(
     Path(upstream_id): Path<Uuid>,
     Query(params): Query<GetUpstreamParams>,
     State(_state): State<Arc<AppState>>,
-) -> AxumResult<Json<UpstreamInfoResponse>, ServiceError> {
+) -> AxumResult<Json<UpstreamInfoResponse>, ApiError> {
     let concrete_params: ConcreteGetUpstreamParams = params.into();
     let upstream_service = &_state.service.nginx.get_upstream_service();
     let upstream_info = if concrete_params.include_targets {

apps/api/src/routes/api/restricted/nginx/upstream/get_upstream_target.rs

@@ -9,7 +9,7 @@ use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 
 use crate::{
-    errors::service_error::ServiceError,
+    errors::{api_error::ApiError, service_error::ServiceError},
     routes::{AppState, api::restricted::nginx::upstream::info::response::UpstreamTargetInfo},
 };
 
@@ -34,7 +34,7 @@ pub async fn get_upstream_target(
     Path(upstream_target_id): Path<Uuid>,
     Query(params): Query<GetUpstreamTargetsParams>,
     State(_state): State<Arc<AppState>>,
-) -> AxumResult<Json<UpstreamTargetInfo>, ServiceError> {
+) -> AxumResult<Json<UpstreamTargetInfo>, ApiError> {
     let concrete_params: ConcreteGetUpstreamTargetsParams = params.into();
     let upstream_service = &_state.service.nginx.get_upstream_service();
     let upstream_target_info = upstream_service