refactoring in remote routing table service

Signed-off-by: Arpit Bandejiya <abandeji@amazon.com>

Author: alchemist51

server/src/main/java/org/opensearch/cluster/routing/remote/RemoteRoutingTableService.java

@@ -237,7 +237,7 @@ private String getIndexRoutingFileName() {
     public CheckedRunnable<IOException> getAsyncIndexMetadataReadAction(
         String uploadedFilename,
         Index index,
-        LatchedActionListener<RemoteIndexRoutingResult> latchedActionListener) {
+        LatchedActionListener<IndexRoutingTable> latchedActionListener) {
         int idx = uploadedFilename.lastIndexOf("/");
         String blobFileName = uploadedFilename.substring(idx+1);
         BlobContainer blobContainer = blobStoreRepository.blobStore().blobContainer( BlobPath.cleanPath().add(uploadedFilename.substring(0,idx)));
@@ -246,7 +246,7 @@ public CheckedRunnable<IOException> getAsyncIndexMetadataReadAction(
             blobContainer,
             blobFileName,
             threadPool.executor(ThreadPool.Names.GENERIC),
-            ActionListener.wrap(response -> latchedActionListener.onResponse(new RemoteIndexRoutingResult(index.getName(), response.readIndexRoutingTable(index))), latchedActionListener::onFailure)
+            ActionListener.wrap(response -> latchedActionListener.onResponse(response.readIndexRoutingTable(index)), latchedActionListener::onFailure)
         );
     }
 
@@ -255,7 +255,6 @@ public void readAsync(BlobContainer blobContainer, String name, ExecutorService
             try {
                 listener.onResponse(read(blobContainer, name));
             } catch (Exception e) {
-                logger.error("routing table download failed : ", e);
                 listener.onFailure(e);
             }
         });
@@ -307,22 +306,4 @@ public void start() {
         blobStoreRepository = (BlobStoreRepository) repository;
     }
 
-    public static class RemoteIndexRoutingResult {
-        String indexName;
-        IndexRoutingTable indexRoutingTable;
-
-        public RemoteIndexRoutingResult(String indexName, IndexRoutingTable indexRoutingTable) {
-            this.indexName = indexName;
-            this.indexRoutingTable = indexRoutingTable;
-        }
-
-       public String getIndexName() {
-           return indexName;
-       }
-
-       public IndexRoutingTable  getIndexRoutingTable() {
-           return indexRoutingTable;
-       }
-    }
-
 }

server/src/main/java/org/opensearch/gateway/remote/RemoteClusterStateService.java

@@ -985,7 +985,7 @@ private ClusterState readClusterStateInParallel(
         CountDownLatch latch = new CountDownLatch(totalReadTasks);
         List<CheckedRunnable<IOException>> asyncMetadataReadActions = new ArrayList<>();
         List<RemoteReadResult> readResults = new ArrayList<>();
-        List<RemoteRoutingTableService.RemoteIndexRoutingResult> readIndexRoutingTableResults = new ArrayList<>();
+        List<IndexRoutingTable> readIndexRoutingTableResults = new ArrayList<>();
         List<Exception> exceptionList = Collections.synchronizedList(new ArrayList<>(totalReadTasks));
 
         LatchedActionListener<RemoteReadResult> listener = new LatchedActionListener<>(
@@ -1012,7 +1012,7 @@ private ClusterState readClusterStateInParallel(
             );
         }
 
-        LatchedActionListener<RemoteRoutingTableService.RemoteIndexRoutingResult> routingTableLatchedActionListener = new LatchedActionListener<>(
+        LatchedActionListener<IndexRoutingTable> routingTableLatchedActionListener = new LatchedActionListener<>(
             ActionListener.wrap(
                 response -> {
                     logger.debug("Successfully read cluster state component from remote");
@@ -1187,8 +1187,8 @@ private ClusterState readClusterStateInParallel(
             }
         });
 
-        readIndexRoutingTableResults.forEach(remoteIndexRoutingResult -> {
-            indicesRouting.put(remoteIndexRoutingResult.getIndexName(), remoteIndexRoutingResult.getIndexRoutingTable());
+        readIndexRoutingTableResults.forEach(indexRoutingTable -> {
+            indicesRouting.put(indexRoutingTable.getIndex().getName(), indexRoutingTable);
         });
 
         metadataBuilder.indices(indexMetadataMap);