chore: skip force unstage if app node is not found

Signed-off-by: Abhinandan Purkait <[email protected]>

control-plane/csi-driver/src/bin/controller/controller.rs

@@ -592,8 +592,12 @@ impl rpc::csi::controller_server::Controller for CsiControllerSvc {
                     }?;
 
                     // Issue a cleanup rpc to csi node to ensure the subsystem doesn't have any path present before publishing
-                    let app_node = RestApiClient::get_client().get_app_node(&args.node_id).await?;
-                    force_unstage(app_node, volume_id.to_string()).await?;
+                    match RestApiClient::get_client().get_app_node(&args.node_id).await {
+                        Ok(app_node) => force_unstage(app_node, volume_id.to_string()).await?,
+                        Err(ApiClientError::ResourceNotExists(..)) => warn!("App node: {}, not found, skipping force unstage volume", args.node_id),
+                        Err(error) => return Err(error.into())
+                    }
+
 
                     // Volume is not published.
                     let v = RestApiClient::get_client()