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.policies;
019
020import java.io.IOException;
021import java.util.List;
022import org.apache.hadoop.fs.FileSystem;
023import org.apache.hadoop.hbase.client.Mutation;
024import org.apache.hadoop.hbase.quotas.SpaceLimitingException;
025import org.apache.hadoop.hbase.quotas.SpaceViolationPolicyEnforcement;
026import org.apache.yetus.audience.InterfaceAudience;
027
028/**
029 * A {@link SpaceViolationPolicyEnforcement} which can be treated as a singleton. When a quota is
030 * not defined on a table or we lack quota information, we want to avoid creating a policy, keeping
031 * this path fast.
032 */
033@InterfaceAudience.Private
034public final class MissingSnapshotViolationPolicyEnforcement
035  extends AbstractViolationPolicyEnforcement {
036  private static final MissingSnapshotViolationPolicyEnforcement SINGLETON =
037    new MissingSnapshotViolationPolicyEnforcement();
038
039  private MissingSnapshotViolationPolicyEnforcement() {
040  }
041
042  public static SpaceViolationPolicyEnforcement getInstance() {
043    return SINGLETON;
044  }
045
046  @Override
047  public boolean shouldCheckBulkLoads() {
048    return false;
049  }
050
051  @Override
052  public long computeBulkLoadSize(FileSystem fs, List<String> paths) throws SpaceLimitingException {
053    long size = 0;
054    for (String path : paths) {
055      size += getFileSize(fs, path);
056    }
057    return size;
058  }
059
060  @Override
061  public void enable() throws IOException {
062  }
063
064  @Override
065  public void disable() throws IOException {
066  }
067
068  @Override
069  public void check(Mutation m) throws SpaceLimitingException {
070  }
071
072  @Override
073  public String getPolicyName() {
074    return "NoQuota";
075  }
076}