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.quotas;
019
020import java.util.List;
021import org.apache.hadoop.hbase.Cell;
022import org.apache.hadoop.hbase.client.Mutation;
023import org.apache.hadoop.hbase.client.Result;
024import org.apache.yetus.audience.InterfaceAudience;
025import org.apache.yetus.audience.InterfaceStability;
026
027import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos;
028
029/**
030 * Noop operation quota returned when no quota is associated to the user/table
031 */
032@InterfaceAudience.Private
033@InterfaceStability.Evolving
034class NoopOperationQuota implements OperationQuota {
035  private static OperationQuota instance = new NoopOperationQuota();
036
037  private NoopOperationQuota() {
038    // no-op
039  }
040
041  public static OperationQuota get() {
042    return instance;
043  }
044
045  @Override
046  public void checkBatchQuota(int numWrites, int numReads) throws RpcThrottlingException {
047    // no-op
048  }
049
050  @Override
051  public void checkScanQuota(ClientProtos.ScanRequest scanRequest, long maxScannerResultSize,
052    long maxBlockBytesScanned, long prevBlockBytesScannedDifference) throws RpcThrottlingException {
053    // no-op
054  }
055
056  @Override
057  public void close() {
058    // no-op
059  }
060
061  @Override
062  public void addGetResult(final Result result) {
063    // no-op
064  }
065
066  @Override
067  public void addScanResult(final List<Result> results) {
068    // no-op
069  }
070
071  @Override
072  public void addMutation(final Mutation mutation) {
073    // no-op
074  }
075
076  @Override
077  public long getReadAvailable() {
078    return Long.MAX_VALUE;
079  }
080
081  @Override
082  public long getReadConsumed() {
083    return 0L;
084  }
085
086  @Override
087  public void addScanResultCells(List<Cell> cells) {
088    // no-op
089  }
090}