From 60e2de212ee5a545e0c21d947841dc89d7199f49 Mon Sep 17 00:00:00 2001
From: galarragas <galarragas@gmail.com>
Date: Wed, 3 Sep 2014 10:40:13 +0100
Subject: Adding support for Kerberos Authentication

---
 .../spyglass/hbase/HBaseInputFormatBase.java       |  2 +-
 .../spyglass/hbase/HBaseInputFormatGranular.java   | 34 +++++-----------
 .../java/parallelai/spyglass/hbase/HBaseTap.java   | 45 +++++++++++++++++-----
 3 files changed, 46 insertions(+), 35 deletions(-)

(limited to 'src/main/java/parallelai')

diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseInputFormatBase.java b/src/main/java/parallelai/spyglass/hbase/HBaseInputFormatBase.java
index 6fa7fce..618bd51 100644
--- a/src/main/java/parallelai/spyglass/hbase/HBaseInputFormatBase.java
+++ b/src/main/java/parallelai/spyglass/hbase/HBaseInputFormatBase.java
@@ -78,7 +78,7 @@ public abstract class HBaseInputFormatBase implements InputFormat<ImmutableBytes
         sourceMode = HBaseConstants.SourceMode.valueOf(job.get(String.format(
                 HBaseConstants.SOURCE_MODE, getTableName(job))));
 
-        LOG.info(String.format("GOT SOURCE MODE (%s) as (%s) and finally", String
+        LOG.info(String.format("GOT SOURCE MODE (%s) as (%s) and finally (%s)", String
                 .format(HBaseConstants.SOURCE_MODE, getTableName(job)), job
                 .get(String.format(HBaseConstants.SOURCE_MODE, getTableName(job))),
                 sourceMode));
diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseInputFormatGranular.java b/src/main/java/parallelai/spyglass/hbase/HBaseInputFormatGranular.java
index 7b61047..753b27e 100644
--- a/src/main/java/parallelai/spyglass/hbase/HBaseInputFormatGranular.java
+++ b/src/main/java/parallelai/spyglass/hbase/HBaseInputFormatGranular.java
@@ -1,15 +1,5 @@
 package parallelai.spyglass.hbase;
 
-import java.io.IOException;
-import java.net.InetAddress;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Set;
-import java.util.TreeSet;
-
-import javax.naming.NamingException;
-
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.HConstants;
@@ -25,9 +15,17 @@ import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.RecordReader;
 import org.apache.hadoop.mapred.Reporter;
 import org.apache.hadoop.net.DNS;
-
 import parallelai.spyglass.hbase.HBaseConstants.SourceMode;
 
+import javax.naming.NamingException;
+import java.io.IOException;
+import java.net.InetAddress;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Set;
+import java.util.TreeSet;
+
 /**
  * See HBaseInputFormatRegional first (!)
  *
@@ -188,20 +186,6 @@ public class HBaseInputFormatGranular extends HBaseInputFormatBase {
 						byte[] rStart = cRegion.getRegionInfo().getStartKey();
 						byte[] rStop = cRegion.getRegionInfo().getEndKey();
 
-//						HServerAddress regionServerAddress = cRegion
-//								.getServerAddress();
-//						InetAddress regionAddress = regionServerAddress
-//								.getInetSocketAddress().getAddress();
-//						String regionLocation;
-//						try {
-//							regionLocation = reverseDNS(regionAddress);
-//                            regionLocation = cRegion.
-//						} catch (NamingException e) {
-//							LOG.error("Cannot resolve the host name for "
-//									+ regionAddress + " because of " + e);
-//							regionLocation = cRegion.getHostname();
-//						}
-
                         String regionName = cRegion.getRegionInfo().getRegionNameAsString();
 
                         byte[] sStart = (startRow == HConstants.EMPTY_START_ROW
diff --git a/src/main/java/parallelai/spyglass/hbase/HBaseTap.java b/src/main/java/parallelai/spyglass/hbase/HBaseTap.java
index 0b1ee98..1224179 100644
--- a/src/main/java/parallelai/spyglass/hbase/HBaseTap.java
+++ b/src/main/java/parallelai/spyglass/hbase/HBaseTap.java
@@ -12,37 +12,36 @@
 
 package parallelai.spyglass.hbase;
 
-import parallelai.spyglass.hbase.HBaseConstants.SplitType;
-
-import parallelai.spyglass.hbase.HBaseConstants.SourceMode;
 import cascading.flow.FlowProcess;
 import cascading.tap.SinkMode;
 import cascading.tap.Tap;
 import cascading.tap.hadoop.io.HadoopTupleEntrySchemeIterator;
 import cascading.tuple.TupleEntryCollector;
 import cascading.tuple.TupleEntryIterator;
-
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.HBaseConfiguration;
 import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HTableDescriptor;
-import org.apache.hadoop.hbase.MasterNotRunningException;
-import org.apache.hadoop.hbase.ZooKeeperConnectionException;
 import org.apache.hadoop.hbase.client.HBaseAdmin;
+import org.apache.hadoop.hbase.security.User;
 import org.apache.hadoop.mapred.FileInputFormat;
 import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapred.OutputCollector;
 import org.apache.hadoop.mapred.RecordReader;
+import org.apache.hadoop.security.Credentials;
+import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.security.token.Token;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import parallelai.spyglass.hbase.HBaseConstants.SourceMode;
+import parallelai.spyglass.hbase.HBaseConstants.SplitType;
 
 import java.io.IOException;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.UUID;
-
 /**
  * The HBaseTap class is a {@link Tap} subclass. It is used in conjunction with
  * the {@HBaseFullScheme} to allow for the reading and writing
@@ -125,6 +124,28 @@ public class HBaseTap extends Tap<JobConf, RecordReader, OutputCollector> {
     this.tableName = tableName;
   }
 
+
+  private void obtainToken(JobConf conf) {
+    if (User.isHBaseSecurityEnabled(conf)) {
+        String user = conf.getUser();
+        LOG.info("obtaining HBase token for: {}", user);
+        try {
+            UserGroupInformation currentUser = UserGroupInformation.getCurrentUser();
+            user = currentUser.getUserName();
+            Credentials credentials = conf.getCredentials();
+            for (Token t : currentUser.getTokens()) {
+                LOG.debug("Token {} is available", t);
+                //there must be HBASE_AUTH_TOKEN exists, if not bad thing will happen, it's must be generated when job submission.
+                if ("HBASE_AUTH_TOKEN".equalsIgnoreCase(t.getKind().toString())) {
+                    credentials.addToken(t.getKind(), t);
+                }
+            }
+        } catch (IOException e) {
+            throw new RuntimeException("Unable to obtain HBase auth token for " + user, e);
+        }
+    }
+  }
+
   /**
    * Method getTableName returns the tableName of this HBaseTap object.
    *
@@ -153,6 +174,8 @@ public class HBaseTap extends Tap<JobConf, RecordReader, OutputCollector> {
       conf.set("hbase.zookeeper.quorum", quorumNames);
     }
 
+
+
     LOG.debug("sinking to table: {}", tableName);
 
     if (isReplace() && conf.get("mapred.task.partition") == null) {
@@ -179,7 +202,9 @@ public class HBaseTap extends Tap<JobConf, RecordReader, OutputCollector> {
     for( SinkConfig sc : sinkConfigList) {
         sc.configure(conf);
     }
-    
+
+    obtainToken(conf);
+
     super.sinkConfInit(process, conf);
   }
 
@@ -277,7 +302,9 @@ public class HBaseTap extends Tap<JobConf, RecordReader, OutputCollector> {
     for( SourceConfig sc : sourceConfigList) {
       sc.configure(conf);
     }
-    
+
+    obtainToken(conf);
+
     super.sourceConfInit(process, conf);
   }
 
-- 
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