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