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; 18 19 import java.io.IOException; 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 import org.apache.hadoop.hbase.client.Connection; 25 26 /** 27 * An interface which abstract away the action taken to enable or disable 28 * a space quota violation policy across the HBase cluster. Implementations 29 * must have a no-args constructor. 30 */ 31 @InterfaceAudience.Private 32 @InterfaceStability.Evolving 33 public interface SpaceQuotaSnapshotNotifier { 34 35 /** 36 * Initializes the notifier. 37 */ 38 void initialize(Connection conn); 39 40 /** 41 * Instructs the cluster that the given table is in violation of a space quota. The 42 * provided violation policy is the action which should be taken on the table. 43 * 44 * @param tableName The name of the table in violation of the quota. 45 * @param snapshot The details of the violation of the quota. 46 */ 47 void transitionTable(TableName tableName, SpaceQuotaSnapshot snapshot) throws IOException; 48 }