001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.security.access;
019
020import java.io.IOException;
021import java.util.Optional;
022import org.apache.hadoop.hbase.HBaseInterfaceAudience;
023import org.apache.hadoop.hbase.coprocessor.CoreCoprocessor;
024import org.apache.hadoop.hbase.coprocessor.EndpointObserver;
025import org.apache.hadoop.hbase.coprocessor.ObserverContext;
026import org.apache.hadoop.hbase.coprocessor.RegionCoprocessor;
027import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
028import org.apache.yetus.audience.InterfaceAudience;
029
030import org.apache.hbase.thirdparty.com.google.protobuf.Message;
031import org.apache.hbase.thirdparty.com.google.protobuf.Service;
032
033@CoreCoprocessor
034@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)
035public class EndpointReadOnlyController extends AbstractReadOnlyController
036  implements EndpointObserver, RegionCoprocessor {
037
038  @Override
039  public Optional<EndpointObserver> getEndpointObserver() {
040    return Optional.of(this);
041  }
042
043  @Override
044  public Message preEndpointInvocation(ObserverContext<? extends RegionCoprocessorEnvironment> ctx,
045    Service service, String methodName, Message request) throws IOException {
046    internalReadOnlyGuard();
047    return EndpointObserver.super.preEndpointInvocation(ctx, service, methodName, request);
048  }
049
050}