content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.bookkeeper.stream.storage.impl.service;
  
  import io.grpc.Status;
  import io.grpc.StatusRuntimeException;
  import java.util.concurrent.CompletableFuture;
  import org.apache.bookkeeper.common.concurrent.FutureUtils;
  import org.apache.bookkeeper.common.util.OrderedScheduler;
  import org.apache.bookkeeper.stream.proto.kv.rpc.DeleteRangeRequest;
  import org.apache.bookkeeper.stream.proto.kv.rpc.DeleteRangeResponse;
  import org.apache.bookkeeper.stream.proto.kv.rpc.IncrementRequest;
  import org.apache.bookkeeper.stream.proto.kv.rpc.IncrementResponse;
  import org.apache.bookkeeper.stream.proto.kv.rpc.PutRequest;
  import org.apache.bookkeeper.stream.proto.kv.rpc.PutResponse;
  import org.apache.bookkeeper.stream.proto.kv.rpc.RangeRequest;
  import org.apache.bookkeeper.stream.proto.kv.rpc.RangeResponse;
  import org.apache.bookkeeper.stream.proto.kv.rpc.TxnRequest;
  import org.apache.bookkeeper.stream.proto.kv.rpc.TxnResponse;
  import org.apache.bookkeeper.stream.proto.storage.CreateNamespaceRequest;
  import org.apache.bookkeeper.stream.proto.storage.CreateNamespaceResponse;
  import org.apache.bookkeeper.stream.proto.storage.CreateStreamRequest;
  import org.apache.bookkeeper.stream.proto.storage.CreateStreamResponse;
  import org.apache.bookkeeper.stream.proto.storage.DeleteNamespaceRequest;
  import org.apache.bookkeeper.stream.proto.storage.DeleteNamespaceResponse;
  import org.apache.bookkeeper.stream.proto.storage.DeleteStreamRequest;
  import org.apache.bookkeeper.stream.proto.storage.DeleteStreamResponse;
  import org.apache.bookkeeper.stream.proto.storage.GetActiveRangesRequest;
  import org.apache.bookkeeper.stream.proto.storage.GetActiveRangesResponse;
  import org.apache.bookkeeper.stream.proto.storage.GetNamespaceRequest;
  import org.apache.bookkeeper.stream.proto.storage.GetNamespaceResponse;
  import org.apache.bookkeeper.stream.proto.storage.GetStreamRequest;
  import org.apache.bookkeeper.stream.proto.storage.GetStreamResponse;
  import org.apache.bookkeeper.stream.storage.api.metadata.RangeStoreService;
  
  /**
   * It is a single-ton implementation that fails all requests.
   */
  final class FailRequestRangeStoreService implements RangeStoreService {
  
      static RangeStoreService of(OrderedScheduler scheduler) {
          return new FailRequestRangeStoreService(scheduler);
      }
  
      private final OrderedScheduler scheduler;
  
      private FailRequestRangeStoreService(OrderedScheduler scheduler) {
          this.scheduler = scheduler;
      }
  
      private <T> CompletableFuture<T> failWrongGroupRequest() {
          CompletableFuture<T> future = FutureUtils.createFuture();
          scheduler.execute(() ->
              future.completeExceptionally(new StatusRuntimeException(Status.NOT_FOUND)));
          return future;
      }
  
      @Override
      public CompletableFuture<Void> start() {
          return FutureUtils.Void();
      }
  
      @Override
      public CompletableFuture<Void> stop() {
          return FutureUtils.Void();
      }
  
      //
      // Namespace API
      //
  
      @Override
      public CompletableFuture<CreateNamespaceResponse> createNamespace(CreateNamespaceRequest request) {
          return failWrongGroupRequest();
      }
  
      @Override
      public CompletableFuture<DeleteNamespaceResponse> deleteNamespace(DeleteNamespaceRequest request) {
          return failWrongGroupRequest();
      }
  
      @Override
      public CompletableFuture<GetNamespaceResponse> getNamespace(GetNamespaceRequest request) {
          return failWrongGroupRequest();
      }
  
      //
      // Stream API
      //
  
      @Override
      public CompletableFuture<CreateStreamResponse> createStream(CreateStreamRequest request) {
          return failWrongGroupRequest();
      }
  
      @Override
      public CompletableFuture<DeleteStreamResponse> deleteStream(DeleteStreamRequest request) {
          return failWrongGroupRequest();
      }
  
      @Override
      public CompletableFuture<GetStreamResponse> getStream(GetStreamRequest request) {
          return failWrongGroupRequest();
      }
  
      //
      // Stream Meta Range API.
      //
  
      @Override
      public CompletableFuture<GetActiveRangesResponse> getActiveRanges(GetActiveRangesRequest request) {
          return failWrongGroupRequest();
      }
  
      //
      // Table API
      //
  
  
      @Override
      public CompletableFuture<RangeResponse> range(RangeRequest request) {
          return failWrongGroupRequest();
      }
  
      @Override
      public CompletableFuture<PutResponse> put(PutRequest request) {
          return failWrongGroupRequest();
      }
  
      @Override
      public CompletableFuture<DeleteRangeResponse> delete(DeleteRangeRequest request) {
          return failWrongGroupRequest();
      }
  
      @Override
      public CompletableFuture<TxnResponse> txn(TxnRequest request) {
          return failWrongGroupRequest();
      }
  
      @Override
      public CompletableFuture<IncrementResponse> incr(IncrementRequest request) {
          return failWrongGroupRequest();
      }
  }
  