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.io;
019
020import static org.junit.jupiter.api.Assertions.assertEquals;
021import static org.junit.jupiter.api.Assertions.assertTrue;
022
023import java.util.regex.Matcher;
024import org.apache.hadoop.fs.Path;
025import org.apache.hadoop.hbase.TableName;
026import org.apache.hadoop.hbase.regionserver.HRegion;
027import org.apache.hadoop.hbase.testclassification.IOTests;
028import org.apache.hadoop.hbase.testclassification.SmallTests;
029import org.apache.hadoop.hbase.util.CommonFSUtils;
030import org.apache.hadoop.hbase.util.Pair;
031import org.junit.jupiter.api.Tag;
032import org.junit.jupiter.api.Test;
033import org.junit.jupiter.api.TestInfo;
034
035/**
036 * Test that FileLink switches between alternate locations when the current location moves or gets
037 * deleted.
038 */
039@Tag(IOTests.TAG)
040@Tag(SmallTests.TAG)
041public class TestHFileLink {
042
043  @Test
044  public void testValidLinkNames(TestInfo testInfo) {
045    String validLinkNames[] = { "foo=fefefe-0123456", "ns=foo=abababa-fefefefe" };
046
047    for (String name : validLinkNames) {
048      assertTrue(name.matches(HFileLink.LINK_NAME_REGEX), "Failed validating:" + name);
049    }
050
051    for (String name : validLinkNames) {
052      assertTrue(HFileLink.isHFileLink(name), "Failed validating:" + name);
053    }
054
055    String testName = testInfo.getTestMethod().get().getName() + "=fefefe-0123456";
056    assertEquals(TableName.valueOf(testInfo.getTestMethod().get().getName()),
057      HFileLink.getReferencedTableName(testName));
058    assertEquals("fefefe", HFileLink.getReferencedRegionName(testName));
059    assertEquals("0123456", HFileLink.getReferencedHFileName(testName));
060    assertEquals(testName, HFileLink.createHFileLinkName(
061      TableName.valueOf(testInfo.getTestMethod().get().getName()), "fefefe", "0123456"));
062
063    testName = "ns=" + testInfo.getTestMethod().get().getName() + "=fefefe-0123456";
064    assertEquals(TableName.valueOf("ns", testInfo.getTestMethod().get().getName()),
065      HFileLink.getReferencedTableName(testName));
066    assertEquals("fefefe", HFileLink.getReferencedRegionName(testName));
067    assertEquals("0123456", HFileLink.getReferencedHFileName(testName));
068    assertEquals(testName, HFileLink.createHFileLinkName(
069      TableName.valueOf("ns", testInfo.getTestMethod().get().getName()), "fefefe", "0123456"));
070
071    for (String name : validLinkNames) {
072      Matcher m = HFileLink.LINK_NAME_PATTERN.matcher(name);
073      assertTrue(m.matches());
074      assertEquals(HFileLink.getReferencedTableName(name),
075        TableName.valueOf(m.group(1), m.group(2)));
076      assertEquals(HFileLink.getReferencedRegionName(name), m.group(3));
077      assertEquals(HFileLink.getReferencedHFileName(name), m.group(4));
078    }
079  }
080
081  @Test
082  public void testBackReference(TestInfo testInfo) {
083    Path rootDir = new Path("/root");
084    Path archiveDir = new Path(rootDir, ".archive");
085    String storeFileName = "121212";
086    String linkDir = FileLink.BACK_REFERENCES_DIRECTORY_PREFIX + storeFileName;
087    String encodedRegion = "FEFE";
088    String cf = "cf1";
089
090    TableName refTables[] = { TableName.valueOf(testInfo.getTestMethod().get().getName()),
091      TableName.valueOf("ns", testInfo.getTestMethod().get().getName()) };
092
093    for (TableName refTable : refTables) {
094      Path refTableDir = CommonFSUtils.getTableDir(archiveDir, refTable);
095      Path refRegionDir = HRegion.getRegionDir(refTableDir, encodedRegion);
096      Path refDir = new Path(refRegionDir, cf);
097      Path refLinkDir = new Path(refDir, linkDir);
098      String refStoreFileName = refTable.getNameAsString().replace(TableName.NAMESPACE_DELIM, '=')
099        + "=" + encodedRegion + "-" + storeFileName;
100
101      TableName tableNames[] = { TableName.valueOf(testInfo.getTestMethod().get().getName() + "1"),
102        TableName.valueOf("ns", testInfo.getTestMethod().get().getName() + "2"),
103        TableName.valueOf(testInfo.getTestMethod().get().getName() + ":"
104          + testInfo.getTestMethod().get().getName()) };
105
106      for (TableName tableName : tableNames) {
107        Path tableDir = CommonFSUtils.getTableDir(rootDir, tableName);
108        Path regionDir = HRegion.getRegionDir(tableDir, encodedRegion);
109        Path cfDir = new Path(regionDir, cf);
110
111        assertEquals(
112          encodedRegion + "." + tableName.getNameAsString().replace(TableName.NAMESPACE_DELIM, '='),
113          HFileLink.createBackReferenceName(CommonFSUtils.getTableName(tableDir).getNameAsString(),
114            encodedRegion));
115
116        Pair<TableName, String> parsedRef = HFileLink.parseBackReferenceName(encodedRegion + "."
117          + tableName.getNameAsString().replace(TableName.NAMESPACE_DELIM, '='));
118        assertEquals(parsedRef.getFirst(), tableName);
119        assertEquals(encodedRegion, parsedRef.getSecond());
120
121        Path storeFileDir = new Path(refLinkDir, encodedRegion + "."
122          + tableName.getNameAsString().replace(TableName.NAMESPACE_DELIM, '='));
123        Path linkPath = new Path(cfDir, refStoreFileName);
124        assertEquals(linkPath, HFileLink.getHFileFromBackReference(rootDir, storeFileDir));
125      }
126    }
127  }
128
129}