1 /*
2 * Copyright 2010 The Apache Software Foundation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.apache.hadoop.hbase;
18
19 import java.io.IOException;
20
21 import org.apache.hadoop.conf.Configuration;
22 import org.apache.hadoop.hbase.client.HTableInterface;
23
24 /**
25 * Coprocessor environment state.
26 */
27 public interface CoprocessorEnvironment {
28
29 /** @return the Coprocessor interface version */
30 public int getVersion();
31
32 /** @return the HBase version as a string (e.g. "0.21.0") */
33 public String getHBaseVersion();
34
35 /** @return the loaded coprocessor instance */
36 public Coprocessor getInstance();
37
38 /** @return the priority assigned to the loaded coprocessor */
39 public int getPriority();
40
41 /** @return the load sequence number */
42 public int getLoadSequence();
43
44 /** @return the configuration */
45 public Configuration getConfiguration();
46
47 /**
48 * @return an interface for accessing the given table
49 * @throws IOException
50 */
51 public HTableInterface getTable(byte[] tableName) throws IOException;
52 }