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 import java.util.concurrent.ExecutorService; 21 22 import org.apache.hadoop.conf.Configuration; 23 import org.apache.hadoop.hbase.client.HTableInterface; 24 25 /** 26 * Coprocessor environment state. 27 */ 28 public interface CoprocessorEnvironment { 29 30 /** @return the Coprocessor interface version */ 31 public int getVersion(); 32 33 /** @return the HBase version as a string (e.g. "0.21.0") */ 34 public String getHBaseVersion(); 35 36 /** @return the loaded coprocessor instance */ 37 public Coprocessor getInstance(); 38 39 /** @return the priority assigned to the loaded coprocessor */ 40 public int getPriority(); 41 42 /** @return the load sequence number */ 43 public int getLoadSequence(); 44 45 /** @return the configuration */ 46 public Configuration getConfiguration(); 47 48 /** 49 * @return an interface for accessing the given table 50 * @throws IOException 51 */ 52 public HTableInterface getTable(byte[] tableName) throws IOException; 53 54 /** 55 * @return an interface for accessing the given table using the passed executor to run batch 56 * operations 57 * @throws IOException 58 */ 59 public HTableInterface getTable(byte[] tableName, ExecutorService service) throws IOException; 60 }