HBASE-22561 modify HFilePrettyPrinter to accept non-rootdir directories

Signed-off-by: huzheng <openinx@gmail.com>

hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFilePrettyPrinter.java

@@ -174,7 +174,7 @@ public class HFilePrettyPrinter extends Configured implements Tool {
       IOException {
     if (args.length == 0) {
       HelpFormatter formatter = new HelpFormatter();
-      formatter.printHelp("HFile", options, true);
+      formatter.printHelp("hfile", options, true);
       return false;
     }
     CommandLineParser parser = new PosixParser();
@@ -267,7 +267,7 @@ public class HFilePrettyPrinter extends Configured implements Tool {
     // iterate over all files found
     for (Path fileName : files) {
       try {
-        int exitCode = processFile(fileName);
+        int exitCode = processFile(fileName, false);
         if (exitCode != 0) {
           return exitCode;
         }
@@ -284,10 +284,13 @@ public class HFilePrettyPrinter extends Configured implements Tool {
     return 0;
   }
 
-  public int processFile(Path file) throws IOException {
+  // HBASE-22561 introduces boolean checkRootDir for WebUI specificly
-    if (verbose)
+  public int processFile(Path file, boolean checkRootDir) throws IOException {
+    if (verbose) {
       out.println("Scanning -> " + file);
+    }
 
+    if (checkRootDir) {
       Path rootPath = FSUtils.getRootDir(getConf());
       String rootString = rootPath + rootPath.SEPARATOR;
       if (!file.toString().startsWith(rootString)) {
@@ -297,11 +300,12 @@ public class HFilePrettyPrinter extends Configured implements Tool {
         FileSystem rootFS = rootPath.getFileSystem(getConf());
         String qualifiedFile = rootFS.getUri().toString() + file.toString();
         if (!qualifiedFile.startsWith(rootString)) {
-        err.println("ERROR, file (" + file +
+          err.println(
-            ") is not in HBase's root directory (" + rootString + ")");
+            "ERROR, file (" + file + ") is not in HBase's root directory (" + rootString + ")");
           return -2;
         }
       }
+    }
 
     FileSystem fs = file.getFileSystem(getConf());
     if (!fs.exists(file)) {

hbase-server/src/main/resources/hbase-webapps/regionserver/storeFile.jsp

@@ -51,7 +51,7 @@
      printer.setConf(conf);
      String[] options = {"-s"};
      printer.parseOptions(options);
-     printer.processFile(new Path(storeFile));
+     printer.processFile(new Path(storeFile), true);
      String text = byteStream.toString();%>
      <%=
        text

hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFilePrettyPrinter.java

@@ -0,0 +1,110 @@
+/**
+ * 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.io.hfile;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hbase.HBaseClassTestRule;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.regionserver.TestHRegionServerBulkLoad;
+import org.apache.hadoop.hbase.testclassification.IOTests;
+import org.apache.hadoop.hbase.testclassification.SmallTests;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.util.FSUtils;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@Category({IOTests.class, SmallTests.class})
+public class TestHFilePrettyPrinter {
+
+  @ClassRule
+  public static final HBaseClassTestRule CLASS_RULE =
+      HBaseClassTestRule.forClass(TestHFilePrettyPrinter.class);
+
+  private static final Logger LOG = LoggerFactory.getLogger(TestHFilePrettyPrinter.class);
+
+  private final static HBaseTestingUtility UTIL = new HBaseTestingUtility();
+  private static FileSystem fs;
+  private static Configuration conf;
+  private static byte [] cf = Bytes.toBytes("cf");
+  private static byte [] fam = Bytes.toBytes("fam");
+  private static byte [] value = Bytes.toBytes("val");
+  private static PrintStream original;
+  private static PrintStream ps;
+  private static ByteArrayOutputStream stream;
+
+  @Before
+  public void setup() throws Exception {
+    conf = UTIL.getConfiguration();
+    fs = UTIL.getTestFileSystem();
+    stream = new ByteArrayOutputStream();
+    ps = new PrintStream(stream);
+  }
+
+  @After
+  public void teardown() {
+    original = System.out;
+    System.setOut(original);
+  }
+
+  @Test
+  public void testHFilePrettyPrinterNonRootDir() throws Exception {
+    Path fileNotInRootDir =  UTIL.getDataTestDir("hfile");
+    TestHRegionServerBulkLoad.createHFile(fs, fileNotInRootDir, cf, fam, value, 1000);
+    assertNotEquals("directory used is not an HBase root dir",
+      UTIL.getDefaultRootDirPath(), fileNotInRootDir);
+
+    System.setOut(ps);
+    new HFilePrettyPrinter(conf).run(new String[]{"-v", String.valueOf(fileNotInRootDir)});
+    String result = new String(stream.toByteArray());
+    String expectedResult = "Scanning -> " + fileNotInRootDir + "\n" + "Scanned kv count -> 1000\n";
+    assertEquals(expectedResult, result);
+  }
+
+  @Test
+  public void testHFilePrettyPrinterRootDir() throws Exception {
+    Path rootPath = FSUtils.getRootDir(conf);
+    String rootString = rootPath + rootPath.SEPARATOR;
+    Path fileInRootDir = new Path(rootString + "hfile");
+    TestHRegionServerBulkLoad.createHFile(fs, fileInRootDir, cf, fam, value, 1000);
+    assertTrue("directory used is a root dir",
+      fileInRootDir.toString().startsWith(rootString));
+
+    System.setOut(ps);
+    HFilePrettyPrinter printer = new HFilePrettyPrinter();
+    printer.setConf(conf);
+    printer.processFile(fileInRootDir, true);
+    printer.run(new String[]{"-v", String.valueOf(fileInRootDir)});
+    String result = new String(stream.toByteArray());
+    String expectedResult = "Scanning -> " + fileInRootDir + "\n" + "Scanned kv count -> 1000\n";
+    assertEquals(expectedResult, result);
+  }
+}