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 org.apache.hadoop.hbase.client.Mutation;
022import org.apache.hadoop.hbase.quotas.SpaceLimitingException;
023import org.apache.hadoop.hbase.quotas.SpaceViolationPolicy;
024import org.apache.hadoop.hbase.quotas.SpaceViolationPolicyEnforcement;
025import org.apache.yetus.audience.InterfaceAudience;
026
027/**
028 * A {@link SpaceViolationPolicyEnforcement} which disables the table. The enforcement counterpart
029 * to {@link SpaceViolationPolicy#DISABLE}. This violation policy is different from others as it
030 * doesn't take action (i.e. enable/disable table) local to the RegionServer, like the other
031 * ViolationPolicies do. In case of violation, the appropriate action is initiated by the master.
032 */
033@InterfaceAudience.Private
034public class DisableTableViolationPolicyEnforcement extends DefaultViolationPolicyEnforcement {
035
036  @Override
037  public void enable() throws IOException {
038    // do nothing
039  }
040
041  @Override
042  public void disable() throws IOException {
043    // do nothing
044  }
045
046  @Override
047  public void check(Mutation m) throws SpaceLimitingException {
048    // If this policy is enacted, then the table is (or should be) disabled.
049    throw new SpaceLimitingException(getPolicyName(),
050      "This table is disabled due to violating a space quota.");
051  }
052
053  @Override
054  public String getPolicyName() {
055    return SpaceViolationPolicy.DISABLE.name();
056  }
057}