Added some debugging print statements

api/src/config.rs

@@ -102,16 +102,19 @@ impl ConfigV2 {
             return false;
         }
         if let Some(backend_cfg) = self.backend.as_ref() {
+            log::info!("validating backend config: {:?}", backend_cfg);
             if !backend_cfg.validate() {
                 return false;
             }
         }
         if let Some(cache_cfg) = self.cache.as_ref() {
+            log::info!("validating cache config: {:?}", cache_cfg);
             if !cache_cfg.validate() {
                 return false;
             }
         }
         if let Some(rafs_cfg) = self.rafs.as_ref() {
+            log::info!("validating rafs config: {:?}", rafs_cfg);
             if !rafs_cfg.validate() {
                 return false;
             }

storage/src/backend/registry.rs

@@ -336,9 +336,9 @@ impl RegistryState {
             ("password", self.password.as_str()),
             ("client_id", REGISTRY_CLIENT_ID),
         ];
-    
+
         let mut headers = HeaderMap::new();
-    
+
         // Insert the basic auth header to ensure the compatibility (e.g. Harbor registry)
         // of fetching token by HTTP GET method.
         // This refers containerd implementation: https://github.com/containerd/containerd/blob/dc7dba9c20f7210c38e8255487fc0ee12692149d/remotes/docker/auth/fetch.go#L187
@@ -348,7 +348,7 @@ impl RegistryState {
                 format!("Basic {}", auth).parse().unwrap(),
             );
         }
-    
+
         // Print out the GET request details
         let query_string: Vec<String> = query.iter().map(|(k, v)| format!("{}={}", k, v)).collect();
         let curl_command = format!(
@@ -358,7 +358,7 @@ impl RegistryState {
             query_string.join("&")
         );
         println!("Invoke the following curl command:\n{}", curl_command);
-    
+
         let token_resp = connection
             .call::<&[u8]>(
                 Method::GET,