HDFS-6249. Output AclEntry in PBImageXmlWriter. Contributed by surendra singh lilhore.

(cherry picked from commit cc432885ad)

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -306,6 +306,9 @@ Release 2.8.0 - UNRELEASED
     HDFS-8589. Fix unused imports in BPServiceActor and BlockReportLeaseManager
     (cmccabe)
 
+    HDFS-6249. Output AclEntry in PBImageXmlWriter.
+    (surendra singh lilhore via aajisaka)
+
   OPTIMIZATIONS
 
     HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/PBImageXmlWriter.java

@@ -29,6 +29,7 @@ import java.util.Comparator;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.permission.AclEntry;
 import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.CacheDirectiveInfoExpirationProto;
 import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.CacheDirectiveInfoProto;
 import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.CachePoolInfoProto;
@@ -41,6 +42,7 @@ import org.apache.hadoop.hdfs.server.namenode.FsImageProto.FileSummary;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.FilesUnderConstructionSection.FileUnderConstructionEntry;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeDirectorySection;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection;
+import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection.AclFeatureProto;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection.INodeDirectory;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeSection.INodeSymlink;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.INodeReferenceSection;
@@ -51,7 +53,7 @@ import org.apache.hadoop.hdfs.server.namenode.FsImageProto.SnapshotSection;
 import org.apache.hadoop.hdfs.server.namenode.FsImageProto.StringTableSection;
 import org.apache.hadoop.hdfs.util.XMLUtils;
 import org.apache.hadoop.util.LimitInputStream;
-
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 
 /**
@@ -188,7 +190,7 @@ public final class PBImageXmlWriter {
   private void dumpINodeDirectory(INodeDirectory d) {
     o("mtime", d.getModificationTime()).o("permission",
         dumpPermission(d.getPermission()));
-
+    dumpAcls(d.getAcl());
     if (d.hasDsQuota() && d.hasNsQuota()) {
       o("nsquota", d.getNsQuota()).o("dsquota", d.getDsQuota());
     }
@@ -242,7 +244,7 @@ public final class PBImageXmlWriter {
         .o("atime", f.getAccessTime())
         .o("perferredBlockSize", f.getPreferredBlockSize())
         .o("permission", dumpPermission(f.getPermission()));
-
+    dumpAcls(f.getAcl());
     if (f.getBlocksCount() > 0) {
       out.print("<blocks>");
       for (BlockProto b : f.getBlocksList()) {
@@ -263,6 +265,18 @@ public final class PBImageXmlWriter {
     }
   }
 
+  private void dumpAcls(AclFeatureProto aclFeatureProto) {
+    ImmutableList<AclEntry> aclEntryList = FSImageFormatPBINode.Loader
+        .loadAclEntries(aclFeatureProto, stringTable);
+    if (aclEntryList.size() > 0) {
+      out.print("<acls>");
+      for (AclEntry aclEntry : aclEntryList) {
+        o("acl", aclEntry.toString());
+      }
+      out.print("</acls>");
+    }
+  }
+
   private void dumpINodeSection(InputStream in) throws IOException {
     INodeSection s = INodeSection.parseDelimitedFrom(in);
     out.print("<INodeSection>");

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/TestOfflineImageViewerForAcl.java

@@ -17,14 +17,23 @@
  */
 package org.apache.hadoop.hdfs.tools.offlineImageViewer;
 
+import java.io.ByteArrayOutputStream;
 import java.io.File;
+import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.io.PrintStream;
+import java.io.RandomAccessFile;
+import java.io.StringReader;
 import java.net.HttpURLConnection;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.HashMap;
 
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -42,6 +51,9 @@ import org.apache.hadoop.net.NetUtils;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
 
 import static org.apache.hadoop.fs.permission.AclEntryScope.ACCESS;
 import static org.apache.hadoop.fs.permission.AclEntryScope.DEFAULT;
@@ -202,4 +214,16 @@ public class TestOfflineImageViewerForAcl {
       viewer.close();
     }
   }
+
+  @Test
+  public void testPBImageXmlWriterForAcl() throws Exception{
+    ByteArrayOutputStream output = new ByteArrayOutputStream();
+    PrintStream o = new PrintStream(output);
+    PBImageXmlWriter v = new PBImageXmlWriter(new Configuration(), o);
+    v.visit(new RandomAccessFile(originalFsimage, "r"));
+    SAXParserFactory spf = SAXParserFactory.newInstance();
+    SAXParser parser = spf.newSAXParser();
+    final String xml = output.toString();
+    parser.parse(new InputSource(new StringReader(xml)), new DefaultHandler());
+  }
 }