001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to you under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.hadoop.hbase.quotas;
018
019import java.io.IOException;
020import org.apache.hadoop.hbase.TableName;
021import org.apache.hadoop.hbase.client.Connection;
022import org.apache.hadoop.hbase.client.Put;
023import org.apache.hadoop.hbase.client.Table;
024import org.apache.yetus.audience.InterfaceAudience;
025import org.slf4j.Logger;
026import org.slf4j.LoggerFactory;
027
028/**
029 * A {@link SpaceQuotaSnapshotNotifier} which uses the hbase:quota table.
030 */
031@InterfaceAudience.Private
032public class TableSpaceQuotaSnapshotNotifier implements SpaceQuotaSnapshotNotifier {
033  private static final Logger LOG = LoggerFactory.getLogger(TableSpaceQuotaSnapshotNotifier.class);
034
035  private Connection conn;
036
037  @Override
038  public void transitionTable(
039      TableName tableName, SpaceQuotaSnapshot snapshot) throws IOException {
040    final Put p = QuotaTableUtil.createPutForSpaceSnapshot(tableName, snapshot);
041    try (Table quotaTable = conn.getTable(QuotaTableUtil.QUOTA_TABLE_NAME)) {
042      if (LOG.isTraceEnabled()) {
043        LOG.trace("Persisting a space quota snapshot " + snapshot + " for " + tableName);
044      }
045      quotaTable.put(p);
046    }
047  }
048
049  @Override
050  public void initialize(Connection conn) {
051    this.conn = conn;
052  }
053}