/*
    * Copyright 2017 LINE Corporation
    *
    * LINE Corporation 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:
    *
    *   https://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 com.linecorp.centraldogma.server.command;
  
  import static java.util.Objects.requireNonNull;
  
  import java.util.concurrent.CompletableFuture;
  
  import com.linecorp.centraldogma.internal.Util;
  import com.linecorp.centraldogma.server.QuotaConfig;
  
  /**
   * A {@link CommandExecutor} which forwards all its method calls to another {@link CommandExecutor}.
   */
  public class ForwardingCommandExecutor implements CommandExecutor {
  
      private final CommandExecutor delegate;
  
      protected ForwardingCommandExecutor(CommandExecutor delegate) {
          this.delegate = requireNonNull(delegate, "delegate");
      }
  
      protected final <T extends CommandExecutor> T delegate() {
          return Util.unsafeCast(delegate);
      }
  
      @Override
      public int replicaId() {
          return delegate().replicaId();
      }
  
      @Override
      public boolean isStarted() {
          return delegate().isStarted();
      }
  
      @Override
      public CompletableFuture<Void> start() {
          return delegate().start();
      }
  
      @Override
      public CompletableFuture<Void> stop() {
          return delegate().stop();
      }
  
      @Override
      public boolean isWritable() {
          return delegate().isWritable();
      }
  
      @Override
      public void setWritable(boolean writable) {
          delegate().setWritable(writable);
      }
  
      @Override
      public void setWriteQuota(String projectName, String repoName, QuotaConfig writeQuota) {
          delegate().setWriteQuota(projectName, repoName, writeQuota);
      }
  
      @Override
      public <T> CompletableFuture<T> execute(Command<T> command) {
          return delegate().execute(command);
      }
  
      @Override
      public CommandExecutorStatusManager statusManager() {
          return delegate().statusManager();
      }
  
      @Override
      public String toString() {
          return getClass().getSimpleName() + '(' + delegate() + ')';
      }
  }