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1   /**
2    * Copyright 2010 The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  package org.apache.hadoop.hbase.master;
21  
22  import java.io.IOException;
23  
24  import org.apache.hadoop.hbase.HTableDescriptor;
25  import org.apache.hadoop.hbase.Server;
26  import org.apache.hadoop.hbase.TableDescriptors;
27  import org.apache.hadoop.hbase.TableNotDisabledException;
28  import org.apache.hadoop.hbase.TableNotFoundException;
29  import org.apache.hadoop.hbase.executor.ExecutorService;
30  
31  /**
32   * Services Master supplies
33   */
34  public interface MasterServices extends Server {
35    /**
36     * @return Master's instance of the {@link AssignmentManager}
37     */
38    public AssignmentManager getAssignmentManager();
39  
40    /**
41     * @return Master's filesystem {@link MasterFileSystem} utility class.
42     */
43    public MasterFileSystem getMasterFileSystem();
44  
45    /**
46     * @return Master's {@link ServerManager} instance.
47     */
48    public ServerManager getServerManager();
49  
50    /**
51     * @return Master's instance of {@link ExecutorService}
52     */
53    public ExecutorService getExecutorService();
54  
55    /**
56     * Check table is modifiable; i.e. exists and is offline.
57     * @param tableName Name of table to check.
58     * @throws TableNotDisabledException
59     * @throws TableNotFoundException 
60     */
61    public void checkTableModifiable(final byte [] tableName) throws IOException;
62  
63    /**
64     * Create a table using the given table definition.
65     * @param desc The table definition
66     * @param splitKeys Starting row keys for the initial table regions.  If null
67     *     a single region is created.
68     */
69    public void createTable(HTableDescriptor desc, byte [][] splitKeys)
70        throws IOException;
71  
72    /**
73     * @return Return table descriptors implementation.
74     */
75    public TableDescriptors getTableDescriptors();
76  }