| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.hbase; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.hadoop.hbase.client.Result; |
| import org.apache.hadoop.hbase.util.Bytes; |
| |
| /** |
| * Mocking utility for common hbase:meta functionality |
| */ |
| public class MetaMockingUtil { |
| |
| /** |
| * Returns a Result object constructed from the given region information simulating |
| * a catalog table result. |
| * @param region the HRegionInfo object or null |
| * @return A mocked up Result that fakes a Get on a row in the <code>hbase:meta</code> table. |
| * @throws IOException |
| */ |
| public static Result getMetaTableRowResult(final HRegionInfo region) |
| throws IOException { |
| return getMetaTableRowResult(region, null, null, null); |
| } |
| |
| /** |
| * Returns a Result object constructed from the given region information simulating |
| * a catalog table result. |
| * @param region the HRegionInfo object or null |
| * @param sn to use making startcode and server hostname:port in meta or null |
| * @return A mocked up Result that fakes a Get on a row in the <code>hbase:meta</code> table. |
| * @throws IOException |
| */ |
| public static Result getMetaTableRowResult(final HRegionInfo region, final ServerName sn) |
| throws IOException { |
| return getMetaTableRowResult(region, sn, null, null); |
| } |
| |
| /** |
| * Returns a Result object constructed from the given region information simulating |
| * a catalog table result. |
| * @param region the HRegionInfo object or null |
| * @param sn to use making startcode and server hostname:port in meta or null |
| * @param splita daughter region or null |
| * @param splitb daughter region or null |
| * @return A mocked up Result that fakes a Get on a row in the <code>hbase:meta</code> table. |
| * @throws IOException |
| */ |
| public static Result getMetaTableRowResult(HRegionInfo region, final ServerName sn, |
| HRegionInfo splita, HRegionInfo splitb) throws IOException { |
| List<Cell> kvs = new ArrayList<Cell>(); |
| if (region != null) { |
| kvs.add(new KeyValue( |
| region.getRegionName(), |
| HConstants.CATALOG_FAMILY, HConstants.REGIONINFO_QUALIFIER, |
| region.toByteArray())); |
| } |
| |
| if (sn != null) { |
| kvs.add(new KeyValue(region.getRegionName(), |
| HConstants.CATALOG_FAMILY, HConstants.SERVER_QUALIFIER, |
| Bytes.toBytes(sn.getHostAndPort()))); |
| kvs.add(new KeyValue(region.getRegionName(), |
| HConstants.CATALOG_FAMILY, HConstants.STARTCODE_QUALIFIER, |
| Bytes.toBytes(sn.getStartcode()))); |
| } |
| |
| if (splita != null) { |
| kvs.add(new KeyValue( |
| region.getRegionName(), |
| HConstants.CATALOG_FAMILY, HConstants.SPLITA_QUALIFIER, |
| splita.toByteArray())); |
| } |
| |
| if (splitb != null) { |
| kvs.add(new KeyValue( |
| region.getRegionName(), |
| HConstants.CATALOG_FAMILY, HConstants.SPLITB_QUALIFIER, |
| splitb.toByteArray())); |
| } |
| |
| //important: sort the kvs so that binary search work |
| Collections.sort(kvs, CellComparator.META_COMPARATOR); |
| |
| return Result.create(kvs); |
| } |
| |
| /** |
| * @param sn ServerName to use making startcode and server in meta |
| * @param hri Region to serialize into HRegionInfo |
| * @return A mocked up Result that fakes a Get on a row in the <code>hbase:meta</code> table. |
| * @throws IOException |
| */ |
| public static Result getMetaTableRowResultAsSplitRegion(final HRegionInfo hri, |
| final ServerName sn) throws IOException { |
| hri.setOffline(true); |
| hri.setSplit(true); |
| return getMetaTableRowResult(hri, sn); |
| } |
| |
| } |