1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.hadoop.hbase.master.procedure;
20
21 import org.apache.hadoop.hbase.TableName;
22 import org.apache.hadoop.hbase.classification.InterfaceAudience;
23 import org.apache.hadoop.hbase.classification.InterfaceStability;
24
25 /**
26 * Procedures that operates on a specific Table (e.g. create, delete, snapshot, ...)
27 * must implement this interface to allow the system handle the lock/concurrency problems.
28 */
29 @InterfaceAudience.Private
30 @InterfaceStability.Evolving
31 public interface TableProcedureInterface {
32 public enum TableOperationType {
33 CREATE, DELETE, DISABLE, EDIT, ENABLE, READ,
34 };
35
36 /**
37 * @return the name of the table the procedure is operating on
38 */
39 TableName getTableName();
40
41 /**
42 * Given an operation type we can take decisions about what to do with pending operations.
43 * e.g. if we get a delete and we have some table operation pending (e.g. add column)
44 * we can abort those operations.
45 * @return the operation type that the procedure is executing.
46 */
47 TableOperationType getTableOperationType();
48 }