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.hfile;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertNotEquals;
022import static org.junit.Assert.assertTrue;
023
024import java.io.ByteArrayOutputStream;
025import java.io.PrintStream;
026
027import org.apache.hadoop.conf.Configuration;
028import org.apache.hadoop.fs.FileSystem;
029import org.apache.hadoop.fs.Path;
030import org.apache.hadoop.hbase.HBaseClassTestRule;
031import org.apache.hadoop.hbase.HBaseTestingUtility;
032import org.apache.hadoop.hbase.regionserver.TestHRegionServerBulkLoad;
033import org.apache.hadoop.hbase.testclassification.IOTests;
034import org.apache.hadoop.hbase.testclassification.SmallTests;
035import org.apache.hadoop.hbase.util.Bytes;
036import org.apache.hadoop.hbase.util.FSUtils;
037import org.junit.After;
038import org.junit.Before;
039import org.junit.ClassRule;
040import org.junit.Test;
041import org.junit.experimental.categories.Category;
042import org.slf4j.Logger;
043import org.slf4j.LoggerFactory;
044
045@Category({IOTests.class, SmallTests.class})
046public class TestHFilePrettyPrinter {
047
048  @ClassRule
049  public static final HBaseClassTestRule CLASS_RULE =
050      HBaseClassTestRule.forClass(TestHFilePrettyPrinter.class);
051
052  private static final Logger LOG = LoggerFactory.getLogger(TestHFilePrettyPrinter.class);
053
054  private final static HBaseTestingUtility UTIL = new HBaseTestingUtility();
055  private static FileSystem fs;
056  private static Configuration conf;
057  private static byte [] cf = Bytes.toBytes("cf");
058  private static byte [] fam = Bytes.toBytes("fam");
059  private static byte [] value = Bytes.toBytes("val");
060  private static PrintStream original;
061  private static PrintStream ps;
062  private static ByteArrayOutputStream stream;
063
064  @Before
065  public void setup() throws Exception {
066    conf = UTIL.getConfiguration();
067    fs = UTIL.getTestFileSystem();
068    stream = new ByteArrayOutputStream();
069    ps = new PrintStream(stream);
070  }
071
072  @After
073  public void teardown() {
074    original = System.out;
075    System.setOut(original);
076  }
077
078  @Test
079  public void testHFilePrettyPrinterNonRootDir() throws Exception {
080    Path fileNotInRootDir =  UTIL.getDataTestDir("hfile");
081    TestHRegionServerBulkLoad.createHFile(fs, fileNotInRootDir, cf, fam, value, 1000);
082    assertNotEquals("directory used is not an HBase root dir",
083      UTIL.getDefaultRootDirPath(), fileNotInRootDir);
084
085    System.setOut(ps);
086    new HFilePrettyPrinter(conf).run(new String[]{"-v", String.valueOf(fileNotInRootDir)});
087    String result = new String(stream.toByteArray());
088    String expectedResult = "Scanning -> " + fileNotInRootDir + "\n" + "Scanned kv count -> 1000\n";
089    assertEquals(expectedResult, result);
090  }
091
092  @Test
093  public void testHFilePrettyPrinterRootDir() throws Exception {
094    Path rootPath = FSUtils.getRootDir(conf);
095    String rootString = rootPath + rootPath.SEPARATOR;
096    Path fileInRootDir = new Path(rootString + "hfile");
097    TestHRegionServerBulkLoad.createHFile(fs, fileInRootDir, cf, fam, value, 1000);
098    assertTrue("directory used is a root dir",
099      fileInRootDir.toString().startsWith(rootString));
100
101    System.setOut(ps);
102    HFilePrettyPrinter printer = new HFilePrettyPrinter();
103    printer.setConf(conf);
104    printer.processFile(fileInRootDir, true);
105    printer.run(new String[]{"-v", String.valueOf(fileInRootDir)});
106    String result = new String(stream.toByteArray());
107    String expectedResult = "Scanning -> " + fileInRootDir + "\n" + "Scanned kv count -> 1000\n";
108    assertEquals(expectedResult, result);
109  }
110}