1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to you under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.hadoop.hbase.quotas.policies;
18
19 import org.apache.hadoop.hbase.classification.InterfaceAudience;
20 import org.apache.hadoop.hbase.client.Append;
21 import org.apache.hadoop.hbase.client.Increment;
22 import org.apache.hadoop.hbase.client.Mutation;
23 import org.apache.hadoop.hbase.client.Put;
24 import org.apache.hadoop.hbase.quotas.SpaceLimitingException;
25 import org.apache.hadoop.hbase.quotas.SpaceViolationPolicy;
26 import org.apache.hadoop.hbase.quotas.SpaceViolationPolicyEnforcement;
27
28 /**
29 * A {@link SpaceViolationPolicyEnforcement} which disallows any inserts to the table. The
30 * enforcement counterpart to {@link SpaceViolationPolicy#NO_INSERTS}.
31 */
32 @InterfaceAudience.Private
33 public class NoInsertsViolationPolicyEnforcement extends DefaultViolationPolicyEnforcement {
34
35 @Override
36 public void enable() {}
37
38 @Override
39 public void disable() {}
40
41 @Override
42 public void check(Mutation m) throws SpaceLimitingException {
43 // Disallow all "new" data flowing into HBase, but allow Deletes (even though we know they will
44 // temporarily increase utilization).
45 if (m instanceof Append || m instanceof Increment || m instanceof Put) {
46 throw new SpaceLimitingException(getPolicyName(),
47 m.getClass().getSimpleName() + "s are disallowed due to a space quota.");
48 }
49 }
50
51 @Override
52 public String getPolicyName() {
53 return SpaceViolationPolicy.NO_INSERTS.name();
54 }
55 }