/**
*
* 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.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.UUID;
import java.util.Set;
import java.util.HashSet;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.wal.WALSplitter;
import org.junit.*;
import org.junit.experimental.categories.Category;
/**
* Test {@link FSUtils}.
*/
@Category(MediumTests.class)
public class TestFSVisitor {
final Log LOG = LogFactory.getLog(getClass());
private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private final String TABLE_NAME = "testtb";
private Set<String> tableFamilies;
private Set<String> tableRegions;
private Set<String> recoveredEdits;
private Set<String> tableHFiles;
private Set<String> regionServers;
private Set<String> serverLogs;
private FileSystem fs;
private Path tableDir;
private Path logsDir;
private Path rootDir;
@Before
public void setUp() throws Exception {
fs = FileSystem.get(TEST_UTIL.getConfiguration());
rootDir = TEST_UTIL.getDataTestDir("hbase");
logsDir = new Path(rootDir, HConstants.HREGION_LOGDIR_NAME);
tableFamilies = new HashSet<String>();
tableRegions = new HashSet<String>();
recoveredEdits = new HashSet<String>();
tableHFiles = new HashSet<String>();
regionServers = new HashSet<String>();
serverLogs = new HashSet<String>();
tableDir = createTableFiles(rootDir, TABLE_NAME, tableRegions, tableFamilies, tableHFiles);
createRecoverEdits(tableDir, tableRegions, recoveredEdits);
createLogs(logsDir, regionServers, serverLogs);
FSUtils.logFileSystemState(fs, rootDir, LOG);
}
@After
public void tearDown() throws Exception {
fs.delete(rootDir, true);
}
@Test
public void testVisitStoreFiles() throws IOException {
final Set<String> regions = new HashSet<String>();
final Set<String> families = new HashSet<String>();
final Set<String> hfiles = new HashSet<String>();
FSVisitor.visitTableStoreFiles(fs, tableDir, new FSVisitor.StoreFileVisitor() {
public void storeFile(final String region, final String family, final String hfileName)
throws IOException {
regions.add(region);
families.add(family);
hfiles.add(hfileName);
}
});
assertEquals(tableRegions, regions);
assertEquals(tableFamilies, families);
assertEquals(tableHFiles, hfiles);
}
@Test
public void testVisitRecoveredEdits() throws IOException {
final Set<String> regions = new HashSet<String>();
final Set<String> edits = new HashSet<String>();
FSVisitor.visitTableRecoveredEdits(fs, tableDir, new FSVisitor.RecoveredEditsVisitor() {
public void recoveredEdits (final String region, final String logfile)
throws IOException {
regions.add(region);
edits.add(logfile);
}
});
assertEquals(tableRegions, regions);
assertEquals(recoveredEdits, edits);
}
@Test
public void testVisitLogFiles() throws IOException {
final Set<String> servers = new HashSet<String>();
final Set<String> logs = new HashSet<String>();
FSVisitor.visitLogFiles(fs, rootDir, new FSVisitor.LogFileVisitor() {
public void logFile (final String server, final String logfile) throws IOException {
servers.add(server);
logs.add(logfile);
}
});
assertEquals(regionServers, servers);
assertEquals(serverLogs, logs);
}
/*
* |-testtb/
* |----f1d3ff8443297732862df21dc4e57262/
* |-------f1/
* |----------d0be84935ba84b66b1e866752ec5d663
* |----------9fc9d481718f4878b29aad0a597ecb94
* |-------f2/
* |----------4b0fe6068c564737946bcf4fd4ab8ae1
*/
private Path createTableFiles(final Path rootDir, final String tableName,
final Set<String> tableRegions, final Set<String> tableFamilies,
final Set<String> tableHFiles) throws IOException {
Path tableDir = new Path(rootDir, tableName);
for (int r = 0; r < 10; ++r) {
String regionName = MD5Hash.getMD5AsHex(Bytes.toBytes(r));
tableRegions.add(regionName);
Path regionDir = new Path(tableDir, regionName);
for (int f = 0; f < 3; ++f) {
String familyName = "f" + f;
tableFamilies.add(familyName);
Path familyDir = new Path(regionDir, familyName);
fs.mkdirs(familyDir);
for (int h = 0; h < 5; ++h) {
String hfileName = UUID.randomUUID().toString().replaceAll("-", "");
tableHFiles.add(hfileName);
fs.createNewFile(new Path(familyDir, hfileName));
}
}
}
return tableDir;
}
/*
* |-testtb/
* |----f1d3ff8443297732862df21dc4e57262/
* |-------recovered.edits/
* |----------0000001351969633479
* |----------0000001351969633481
*/
private void createRecoverEdits(final Path tableDir, final Set<String> tableRegions,
final Set<String> recoverEdits) throws IOException {
for (String region: tableRegions) {
Path regionEditsDir = WALSplitter.getRegionDirRecoveredEditsDir(new Path(tableDir, region));
long seqId = System.currentTimeMillis();
for (int i = 0; i < 3; ++i) {
String editName = String.format("%019d", seqId + i);
recoverEdits.add(editName);
FSDataOutputStream stream = fs.create(new Path(regionEditsDir, editName));
stream.write(Bytes.toBytes("test"));
stream.close();
}
}
}
/*
* Old style
* |-.logs/
* |----server5,5,1351969633508/
* |-------server5,5,1351969633508.0
* |----server6,6,1351969633512/
* |-------server6,6,1351969633512.0
* |-------server6,6,1351969633512.3
* New style
* |-.logs/
* |----server3,5,1351969633508/
* |-------server3,5,1351969633508.default.0
* |----server4,6,1351969633512/
* |-------server4,6,1351969633512.default.0
* |-------server4,6,1351969633512.some_provider.3
*/
private void createLogs(final Path logDir, final Set<String> servers,
final Set<String> logs) throws IOException {
for (int s = 0; s < 7; ++s) {
String server = String.format("server%d,%d,%d", s, s, System.currentTimeMillis());
servers.add(server);
Path serverLogDir = new Path(logDir, server);
if (s % 2 == 0) {
if (s % 3 == 0) {
server += ".default";
} else {
server += "." + s;
}
}
fs.mkdirs(serverLogDir);
for (int i = 0; i < 5; ++i) {
String logfile = server + '.' + i;
logs.add(logfile);
FSDataOutputStream stream = fs.create(new Path(serverLogDir, logfile));
stream.write(Bytes.toBytes("test"));
stream.close();
}
}
}
}