HADOOP-8681. add support for HTTPS to the web UIs. (tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1372642 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -22,6 +22,8 @@ Release 2.0.1-alpha - UNRELEASED
 
     HADOOP-8644. AuthenticatedURL should be able to use SSLFactory. (tucu)
 
+    HADOOP-8681. add support for HTTPS to the web UIs. (tucu)
+
   IMPROVEMENTS
 
     HADOOP-8340. SNAPSHOT build versions should compare as less than their eventual

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java

@@ -237,5 +237,8 @@ public class CommonConfigurationKeysPublic {
   public static final String  HADOOP_SECURITY_AUTH_TO_LOCAL =
     "hadoop.security.auth_to_local";
 
+  public static final String HADOOP_SSL_ENABLED_KEY = "hadoop.ssl.enabled";
+  public static final boolean HADOOP_SSL_ENABLED_DEFAULT = false;
+
 }
 

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpConfig.java

@@ -0,0 +1,48 @@
+/**
+ * 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.http;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
+
+/**
+ * Singleton to get access to Http related configuration.
+ */
+@InterfaceAudience.Private
+@InterfaceStability.Unstable
+public class HttpConfig {
+  private static boolean sslEnabled;
+
+  static {
+    Configuration conf = new Configuration();
+    sslEnabled = conf.getBoolean(
+        CommonConfigurationKeysPublic.HADOOP_SSL_ENABLED_KEY,
+        CommonConfigurationKeysPublic.HADOOP_SSL_ENABLED_DEFAULT);
+  }
+
+  public static boolean isSecure() {
+    return sslEnabled;
+  }
+
+  public static String getSchemePrefix() {
+    return (isSecure()) ? "https://" : "http://";
+  }
+
+}

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer.java

@@ -23,12 +23,14 @@
 import java.net.BindException;
 import java.net.InetSocketAddress;
 import java.net.URL;
+import java.security.GeneralSecurityException;
 import java.util.ArrayList;
 import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import javax.net.ssl.SSLServerSocketFactory;
 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
 import javax.servlet.FilterConfig;
@@ -55,6 +57,7 @@
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authentication.server.AuthenticationFilter;
 import org.apache.hadoop.security.authorize.AccessControlList;
+import org.apache.hadoop.security.ssl.SSLFactory;
 import org.apache.hadoop.util.ReflectionUtils;
 import org.mortbay.io.Buffer;
 import org.mortbay.jetty.Connector;
@@ -104,6 +107,7 @@ public class HttpServer implements FilterContainer {
 
   private AccessControlList adminsAcl;
 
+  private SSLFactory sslFactory;
   protected final Server webServer;
   protected final Connector listener;
   protected final WebAppContext webAppContext;
@@ -207,7 +211,23 @@ public HttpServer(String name, String bindAddress, int port,
     
     if(connector == null) {
       listenerStartedExternally = false;
-      listener = createBaseListener(conf);
+      if (HttpConfig.isSecure()) {
+        sslFactory = new SSLFactory(SSLFactory.Mode.SERVER, conf);
+        try {
+          sslFactory.init();
+        } catch (GeneralSecurityException ex) {
+          throw new IOException(ex);
+        }
+        SslSocketConnector sslListener = new SslSocketConnector() {
+          @Override
+          protected SSLServerSocketFactory createFactory() throws Exception {
+            return sslFactory.createSSLServerSocketFactory();
+          }
+        };
+        listener = sslListener;
+      } else {
+        listener = createBaseListener(conf);
+      }
       listener.setHost(bindAddress);
       listener.setPort(port);
     } else {
@@ -708,6 +728,16 @@ public void stop() throws Exception {
       exception = addMultiException(exception, e);
     }
 
+    try {
+      if (sslFactory != null) {
+          sslFactory.destroy();
+      }
+    } catch (Exception e) {
+      LOG.error("Error while destroying the SSLFactory"
+          + webAppContext.getDisplayName(), e);
+      exception = addMultiException(exception, e);
+    }
+
     try {
       // clear & stop webAppContext attributes to avoid memory leaks.
       webAppContext.clearAttributes();

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/SecurityUtil.java

@@ -40,10 +40,12 @@
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.security.authentication.client.AuthenticatedURL;
 import org.apache.hadoop.security.authentication.client.AuthenticationException;
+import org.apache.hadoop.security.ssl.SSLFactory;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.security.token.TokenInfo;
 
@@ -65,12 +67,23 @@ public class SecurityUtil {
   static boolean useIpForTokenService;
   @VisibleForTesting
   static HostResolver hostResolver;
-  
+
+  private static SSLFactory sslFactory;
+
   static {
-    boolean useIp = new Configuration().getBoolean(
+    Configuration conf = new Configuration();
+    boolean useIp = conf.getBoolean(
       CommonConfigurationKeys.HADOOP_SECURITY_TOKEN_SERVICE_USE_IP,
       CommonConfigurationKeys.HADOOP_SECURITY_TOKEN_SERVICE_USE_IP_DEFAULT);
     setTokenServiceUseIp(useIp);
+    if (HttpConfig.isSecure()) {
+      sslFactory = new SSLFactory(SSLFactory.Mode.CLIENT, conf);
+      try {
+        sslFactory.init();
+      } catch (Exception ex) {
+        throw new RuntimeException(ex);
+      }
+    }
   }
   
   /**
@@ -456,7 +469,7 @@ public static URLConnection openSecureHttpConnection(URL url) throws IOException
 
     AuthenticatedURL.Token token = new AuthenticatedURL.Token();
     try {
-      return new AuthenticatedURL().openConnection(url, token);
+      return new AuthenticatedURL(null, sslFactory).openConnection(url, token);
     } catch (AuthenticationException e) {
       throw new IOException("Exception trying to open authenticated connection to "
               + url, e);

hadoop-common-project/hadoop-common/src/main/resources/core-default.xml

@@ -1068,4 +1068,14 @@
   </description>
 </property>
 
+<property>
+  <name>hadoop.ssl.enabled</name>
+  <value>false</value>
+  <description>
+    Whether to use SSL for the HTTP endpoints. If set to true, the
+    NameNode, DataNode, ResourceManager, NodeManager, HistoryServer and
+    MapReduceAppMaster web UIs will be served over HTTPS instead HTTP.
+  </description>
+</property>
+
 </configuration>

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/http/TestSSLHttpServer.java

@@ -0,0 +1,114 @@
+/**
+ * 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.http;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
+import org.apache.hadoop.fs.FileUtil;
+import org.apache.hadoop.security.ssl.KeyStoreTestUtil;
+import org.apache.hadoop.security.ssl.SSLFactory;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import javax.net.ssl.HttpsURLConnection;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.InputStream;
+import java.io.Writer;
+import java.net.URL;
+
+/**
+ * This testcase issues SSL certificates configures the HttpServer to serve
+ * HTTPS using the created certficates and calls an echo servlet using the
+ * corresponding HTTPS URL.
+ */
+public class TestSSLHttpServer extends HttpServerFunctionalTest {
+  private static final String BASEDIR =
+      System.getProperty("test.build.dir", "target/test-dir") + "/" +
+      TestSSLHttpServer.class.getSimpleName();
+
+  static final Log LOG = LogFactory.getLog(TestSSLHttpServer.class);
+  private static HttpServer server;
+  private static URL baseUrl;
+
+  @Before
+  public void setup() throws Exception {
+    File base = new File(BASEDIR);
+    FileUtil.fullyDelete(base);
+    base.mkdirs();
+    String classpathDir =
+        KeyStoreTestUtil.getClasspathDir(TestSSLHttpServer.class);
+    Configuration conf = new Configuration();
+    String keystoresDir = new File(BASEDIR).getAbsolutePath();
+    String sslConfsDir =
+        KeyStoreTestUtil.getClasspathDir(TestSSLHttpServer.class);
+    KeyStoreTestUtil.setupSSLConfig(keystoresDir, sslConfsDir, conf, false);
+    conf.setBoolean(CommonConfigurationKeysPublic.HADOOP_SSL_ENABLED_KEY, true);
+
+    //we do this trick because the MR AppMaster is started in another VM and
+    //the HttpServer configuration is not loaded from the job.xml but from the
+    //site.xml files in the classpath
+    Writer writer = new FileWriter(classpathDir + "/core-site.xml");
+    conf.writeXml(writer);
+    writer.close();
+
+    conf.setInt(HttpServer.HTTP_MAX_THREADS, 10);
+    server = createServer("test", conf);
+    server.addServlet("echo", "/echo", TestHttpServer.EchoServlet.class);
+    server.start();
+    baseUrl = new URL("https://localhost:" + server.getPort() + "/");
+    LOG.info("HTTP server started: "+ baseUrl);
+  }
+
+  @After
+  public void cleanup() throws Exception {
+    server.stop();
+    String classpathDir =
+        KeyStoreTestUtil.getClasspathDir(TestSSLHttpServer.class);
+    new File(classpathDir + "/core-site.xml").delete();
+  }
+  
+
+  @Test
+  public void testEcho() throws Exception {
+    assertEquals("a:b\nc:d\n", 
+        readOut(new URL(baseUrl, "/echo?a=b&c=d")));
+    assertEquals("a:b\nc<:d\ne:>\n", 
+        readOut(new URL(baseUrl, "/echo?a=b&c<=d&e=>")));
+  }
+
+  private static String readOut(URL url) throws Exception {
+    StringBuilder out = new StringBuilder();
+    HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
+    SSLFactory sslf = new SSLFactory(SSLFactory.Mode.CLIENT, new Configuration());
+    sslf.init();
+    conn.setSSLSocketFactory(sslf.createSSLSocketFactory());
+    InputStream in = conn.getInputStream();
+    byte[] buffer = new byte[64 * 1024];
+    int len = in.read(buffer);
+    while (len > 0) {
+      out.append(new String(buffer, 0, len));
+      len = in.read(buffer);
+    }
+    return out.toString();
+  }
+
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DatanodeJspHelper.java

@@ -19,7 +19,6 @@
 
 import java.io.File;
 import java.io.IOException;
-import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.URL;
 import java.net.URLEncoder;
@@ -37,7 +36,6 @@
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hdfs.DFSClient;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
-import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
 import org.apache.hadoop.hdfs.protocol.DirectoryListing;
 import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
@@ -45,6 +43,7 @@
 import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
 import org.apache.hadoop.hdfs.security.token.block.BlockTokenSecretManager;
 import org.apache.hadoop.hdfs.server.common.JspHelper;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.token.Token;
@@ -140,7 +139,7 @@ static void generateDirectoryStructure(JspWriter out,
           DatanodeInfo chosenNode = JspHelper.bestNode(firstBlock, conf);
           String fqdn = canonicalize(chosenNode.getIpAddr());
           int datanodePort = chosenNode.getXferPort();
-          String redirectLocation = "http://" + fqdn + ":"
+          String redirectLocation = HttpConfig.getSchemePrefix() + fqdn + ":"
               + chosenNode.getInfoPort() + "/browseBlock.jsp?blockId="
               + firstBlock.getBlock().getBlockId() + "&blockSize="
               + firstBlock.getBlock().getNumBytes() + "&genstamp="
@@ -220,7 +219,7 @@ static void generateDirectoryStructure(JspWriter out,
         JspHelper.addTableFooter(out);
       }
     }
-    out.print("<br><a href=\"http://"
+    out.print("<br><a href=\"" + HttpConfig.getSchemePrefix()
         + canonicalize(nnAddr) + ":"
         + namenodeInfoPort + "/dfshealth.jsp\">Go back to DFS home</a>");
     dfs.close();
@@ -296,7 +295,7 @@ static void generateFileDetails(JspWriter out,
         Long.MAX_VALUE).getLocatedBlocks();
     // Add the various links for looking at the file contents
     // URL for downloading the full file
-    String downloadUrl = "http://" + req.getServerName() + ":"
+    String downloadUrl = HttpConfig.getSchemePrefix() + req.getServerName() + ":"
         + req.getServerPort() + "/streamFile" + ServletUtil.encodePath(filename)
         + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr, true)
         + JspHelper.getDelegationTokenUrlParam(tokenString);
@@ -314,7 +313,7 @@ static void generateFileDetails(JspWriter out,
       return;
     }
     String fqdn = canonicalize(chosenNode.getIpAddr());
-    String tailUrl = "http://" + fqdn + ":" + chosenNode.getInfoPort()
+    String tailUrl = HttpConfig.getSchemePrefix() + fqdn + ":" + chosenNode.getInfoPort()
         + "/tail.jsp?filename=" + URLEncoder.encode(filename, "UTF-8")
         + "&namenodeInfoPort=" + namenodeInfoPort
         + "&chunkSizeToView=" + chunkSizeToView
@@ -363,7 +362,7 @@ static void generateFileDetails(JspWriter out,
         String datanodeAddr = locs[j].getXferAddr();
         datanodePort = locs[j].getXferPort();
         fqdn = canonicalize(locs[j].getIpAddr());
-        String blockUrl = "http://" + fqdn + ":" + locs[j].getInfoPort()
+        String blockUrl = HttpConfig.getSchemePrefix() + fqdn + ":" + locs[j].getInfoPort()
             + "/browseBlock.jsp?blockId=" + blockidstring
             + "&blockSize=" + blockSize
             + "&filename=" + URLEncoder.encode(filename, "UTF-8")
@@ -374,7 +373,7 @@ static void generateFileDetails(JspWriter out,
             + JspHelper.getDelegationTokenUrlParam(tokenString)
             + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnAddr);
 
-        String blockInfoUrl = "http://" + nnCanonicalName + ":"
+        String blockInfoUrl = HttpConfig.getSchemePrefix() + nnCanonicalName + ":"
             + namenodeInfoPort
             + "/block_info_xml.jsp?blockId=" + blockidstring;
         out.print("<td>&nbsp</td><td><a href=\"" + blockUrl + "\">"
@@ -385,7 +384,7 @@ static void generateFileDetails(JspWriter out,
     }
     out.println("</table>");
     out.print("<hr>");
-    out.print("<br><a href=\"http://"
+    out.print("<br><a href=\"" + HttpConfig.getSchemePrefix()
         + nnCanonicalName + ":"
         + namenodeInfoPort + "/dfshealth.jsp\">Go back to DFS home</a>");
     dfs.close();
@@ -485,7 +484,7 @@ static void generateFileChunks(JspWriter out, HttpServletRequest req,
     String parent = new File(filename).getParent();
     JspHelper.printGotoForm(out, namenodeInfoPort, tokenString, parent, nnAddr);
     out.print("<hr>");
-    out.print("<a href=\"http://"
+    out.print("<a href=\"" + HttpConfig.getSchemePrefix()
         + req.getServerName() + ":" + req.getServerPort()
         + "/browseDirectory.jsp?dir=" + URLEncoder.encode(parent, "UTF-8")
         + "&namenodeInfoPort=" + namenodeInfoPort
@@ -533,7 +532,7 @@ static void generateFileChunks(JspWriter out, HttpServletRequest req,
     }
     String nextUrl = null;
     if (nextBlockIdStr != null) {
-      nextUrl = "http://" + canonicalize(nextHost) + ":" + nextPort
+      nextUrl = HttpConfig.getSchemePrefix() + canonicalize(nextHost) + ":" + nextPort
           + "/browseBlock.jsp?blockId=" + nextBlockIdStr
           + "&blockSize=" + nextBlockSize
           + "&startOffset=" + nextStartOffset
@@ -588,7 +587,7 @@ static void generateFileChunks(JspWriter out, HttpServletRequest req,
 
     String prevUrl = null;
     if (prevBlockIdStr != null) {
-      prevUrl = "http://" + canonicalize(prevHost) + ":" + prevPort
+      prevUrl = HttpConfig.getSchemePrefix() + canonicalize(prevHost) + ":" + prevPort
           + "/browseBlock.jsp?blockId=" + prevBlockIdStr
           + "&blockSize=" + prevBlockSize
           + "&startOffset=" + prevStartOffset

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ClusterJspHelper.java

@@ -41,6 +41,7 @@
 import org.apache.hadoop.hdfs.DFSUtil;
 import org.apache.hadoop.hdfs.DFSUtil.ConfiguredNNAddress;
 import org.apache.hadoop.hdfs.protocol.DatanodeInfo.AdminStates;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.util.StringUtils;
 import org.codehaus.jackson.JsonNode;
 import org.codehaus.jackson.map.ObjectMapper;
@@ -823,7 +824,7 @@ private static void toXmlItemBlockWithLink(XMLOutputter doc, String value,
     doc.startTag("item");
     doc.attribute("label", label);
     doc.attribute("value", value);
-    doc.attribute("link", "http://" + url);
+    doc.attribute("link", HttpConfig.getSchemePrefix() + url);
     doc.endTag(); // item
   }
 
@@ -883,7 +884,7 @@ private static String readOutput(URL url) throws IOException {
 
   private static String queryMbean(String httpAddress, Configuration conf) 
     throws IOException {
-    URL url = new URL("http://"+httpAddress+JMX_QRY);
+    URL url = new URL(HttpConfig.getSchemePrefix() + httpAddress+JMX_QRY);
     return readOutput(url);
   }
   /**

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeJspHelper.java

@@ -51,6 +51,7 @@
 import org.apache.hadoop.hdfs.server.common.Storage.StorageDirectory;
 import org.apache.hadoop.hdfs.server.common.UpgradeStatusReport;
 import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.io.Text;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.net.NodeBase;
@@ -413,7 +414,7 @@ static void redirectToRandomDataNode(ServletContext context,
     }
     String addr = NetUtils.getHostPortString(nn.getNameNodeAddress());
     String fqdn = InetAddress.getByName(nodeToRedirect).getCanonicalHostName();
-    redirectLocation = "http://" + fqdn + ":" + redirectPort
+    redirectLocation = HttpConfig.getSchemePrefix() + fqdn + ":" + redirectPort
         + "/browseDirectory.jsp?namenodeInfoPort="
         + nn.getHttpAddress().getPort() + "&dir=/"
         + (tokenString == null ? "" :
@@ -462,7 +463,8 @@ private void generateNodeDataHeader(JspWriter out, DatanodeDescriptor d,
         String suffix, boolean alive, int nnHttpPort, String nnaddr)
         throws IOException {
       // from nn_browsedfscontent.jsp:
-      String url = "http://" + d.getHostName() + ":" + d.getInfoPort()
+      String url = HttpConfig.getSchemePrefix() + d.getHostName() + ":"
+          + d.getInfoPort()
           + "/browseDirectory.jsp?namenodeInfoPort=" + nnHttpPort + "&dir="
           + URLEncoder.encode("/", "UTF-8")
           + JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, nnaddr);

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/TransferFsImage.java

@@ -32,12 +32,12 @@
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.util.Time;
 import org.apache.hadoop.hdfs.protocol.HdfsConstants;
 import org.apache.hadoop.hdfs.server.common.StorageErrorReporter;
 import org.apache.hadoop.hdfs.server.common.Storage;
-import org.apache.hadoop.hdfs.server.common.Util;
 import org.apache.hadoop.hdfs.server.namenode.NNStorage.NameNodeDirType;
 import org.apache.hadoop.hdfs.server.protocol.RemoteEditLog;
 import org.apache.hadoop.hdfs.util.DataTransferThrottler;
@@ -207,7 +207,8 @@ static MD5Hash getFileClient(String nnHostPort,
       Storage dstStorage, boolean getChecksum) throws IOException {
     byte[] buf = new byte[HdfsConstants.IO_FILE_BUFFER_SIZE];
 
-    String str = "http://" + nnHostPort + "/getimage?" + queryString;
+    String str = HttpConfig.getSchemePrefix() + nnHostPort + "/getimage?" +
+        queryString;
     LOG.info("Opening connection to " + str);
     //
     // open connection to remote server

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

@@ -36,6 +36,7 @@
 import org.apache.hadoop.hdfs.HAUtil;
 import org.apache.hadoop.hdfs.HdfsConfiguration;
 import org.apache.hadoop.hdfs.server.namenode.NamenodeFsck;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.util.StringUtils;
@@ -226,7 +227,7 @@ private String getCurrentNamenodeAddress() throws IOException {
   }
 
   private int doWork(final String[] args) throws IOException {
-    final StringBuilder url = new StringBuilder("http://");
+    final StringBuilder url = new StringBuilder(HttpConfig.getSchemePrefix());
     
     String namenodeAddress = getCurrentNamenodeAddress();
     if (namenodeAddress == null) {

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/webapp/JobBlock.java

@@ -20,7 +20,6 @@
 
 import static org.apache.hadoop.mapreduce.v2.app.webapp.AMParams.JOB_ID;
 import static org.apache.hadoop.yarn.util.StringHelper.join;
-import static org.apache.hadoop.yarn.util.StringHelper.ujoin;
 import static org.apache.hadoop.yarn.webapp.view.JQueryUI._EVEN;
 import static org.apache.hadoop.yarn.webapp.view.JQueryUI._INFO_WRAP;
 import static org.apache.hadoop.yarn.webapp.view.JQueryUI._ODD;
@@ -31,6 +30,7 @@
 import java.util.Date;
 import java.util.List;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.mapreduce.v2.api.records.AMInfo;
 import org.apache.hadoop.mapreduce.v2.api.records.JobId;
 import org.apache.hadoop.mapreduce.v2.app.AppContext;
@@ -40,8 +40,6 @@
 import org.apache.hadoop.mapreduce.v2.util.MRApps;
 import org.apache.hadoop.mapreduce.v2.util.MRApps.TaskAttemptStateUI;
 import org.apache.hadoop.util.StringUtils;
-import org.apache.hadoop.yarn.api.records.NodeId;
-import org.apache.hadoop.yarn.util.BuilderUtils;
 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet;
 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet.DIV;
 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet.TABLE;
@@ -106,7 +104,8 @@ public class JobBlock extends HtmlBlock {
       table.tr().
         td(String.valueOf(attempt.getAttemptId())).
         td(new Date(attempt.getStartTime()).toString()).
-        td().a(".nodelink", url("http://", attempt.getNodeHttpAddress()), 
+        td().a(".nodelink", url(HttpConfig.getSchemePrefix(),
+            attempt.getNodeHttpAddress()),
             attempt.getNodeHttpAddress())._().
         td().a(".logslink", url(attempt.getLogsLink()), 
             "logs")._().

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/webapp/NavBlock.java

@@ -24,6 +24,7 @@
 
 import static org.apache.hadoop.mapreduce.v2.app.webapp.AMWebApp.*;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.mapreduce.v2.api.records.AMInfo;
 import org.apache.hadoop.mapreduce.v2.util.MRApps;
 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet;
@@ -62,7 +63,8 @@ public class NavBlock extends HtmlBlock {
           li().a(url("conf", jobid), "Configuration")._().
           li().a(url("tasks", jobid, "m"), "Map tasks")._().
           li().a(url("tasks", jobid, "r"), "Reduce tasks")._().
-          li().a(".logslink", url("http://", nodeHttpAddress, "node",
+          li().a(".logslink", url(HttpConfig.getSchemePrefix(),
+              nodeHttpAddress, "node",
               "containerlogs", thisAmInfo.getContainerId().toString(), 
               app.getJob().getUserName()), 
               "AM Logs")._()._();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/webapp/TaskPage.java

@@ -27,6 +27,7 @@
 
 import java.util.Collection;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.mapreduce.v2.app.job.TaskAttempt;
 import org.apache.hadoop.mapreduce.v2.app.webapp.dao.TaskAttemptInfo;
 import org.apache.hadoop.util.StringUtils;
@@ -93,13 +94,15 @@ protected void render(Block html) {
           nodeTd._("N/A");
         } else {
           nodeTd.
-            a(".nodelink", url("http://", nodeHttpAddr), nodeHttpAddr);
+            a(".nodelink", url(HttpConfig.getSchemePrefix(),
+                               nodeHttpAddr), nodeHttpAddr);
         }
         nodeTd._();
         if (containerId != null) {
           String containerIdStr = ta.getAssignedContainerIdStr();
           row.td().
-            a(".logslink", url("http://", nodeHttpAddr, "node", "containerlogs",
+              a(".logslink", url(HttpConfig.getSchemePrefix(),
+              nodeHttpAddr, "node", "containerlogs",
               containerIdStr, app.getJob().getUserName()), "logs")._();
         } else {
           row.td()._("N/A")._();

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/webapp/dao/AMAttemptInfo.java

@@ -24,6 +24,7 @@
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlRootElement;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.mapreduce.v2.api.records.AMInfo;
 import org.apache.hadoop.yarn.api.records.ContainerId;
 import org.apache.hadoop.yarn.api.records.NodeId;
@@ -63,7 +64,7 @@ public AMAttemptInfo(AMInfo amInfo, String jobId, String user) {
     ContainerId containerId = amInfo.getContainerId();
     if (containerId != null) {
       this.containerId = containerId.toString();
-      this.logsLink = join("http://" + nodeHttpAddress,
+      this.logsLink = join(HttpConfig.getSchemePrefix() + nodeHttpAddress,
           ujoin("node", "containerlogs", this.containerId, user));
     }
   }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/HostUtil.java

@@ -20,6 +20,7 @@
 
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
+import org.apache.hadoop.http.HttpConfig;
 
 @Private
 @Unstable
@@ -33,9 +34,9 @@ public class HostUtil {
    * @return the taskLogUrl
    */
   public static String getTaskLogUrl(String taskTrackerHostName,
-      String httpPort, String taskAttemptID) {
+    String httpPort, String taskAttemptID) {
-    return ("http://" + taskTrackerHostName + ":" + httpPort
+    return (HttpConfig.getSchemePrefix() + taskTrackerHostName + ":" +
-        + "/tasklog?attemptid=" + taskAttemptID);
+        httpPort + "/tasklog?attemptid=" + taskAttemptID);
   }
 
   public static String convertTrackerNameToHostName(String trackerName) {

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/webapp/HsJobBlock.java

@@ -21,28 +21,18 @@
 import com.google.inject.Inject;
 import java.util.Date;
 import java.util.List;
-import java.util.Map;
 
-import org.apache.hadoop.mapreduce.JobACL;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.mapreduce.v2.api.records.AMInfo;
 import org.apache.hadoop.mapreduce.v2.api.records.JobId;
-import org.apache.hadoop.mapreduce.v2.api.records.JobReport;
-import org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptId;
-import org.apache.hadoop.mapreduce.v2.api.records.TaskAttemptState;
-import org.apache.hadoop.mapreduce.v2.api.records.TaskId;
 import org.apache.hadoop.mapreduce.v2.app.AppContext;
 import org.apache.hadoop.mapreduce.v2.app.job.Job;
-import org.apache.hadoop.mapreduce.v2.app.job.Task;
-import org.apache.hadoop.mapreduce.v2.app.job.TaskAttempt;
 import org.apache.hadoop.mapreduce.v2.app.webapp.dao.ConfEntryInfo;
 import org.apache.hadoop.mapreduce.v2.hs.webapp.dao.AMAttemptInfo;
 import org.apache.hadoop.mapreduce.v2.hs.webapp.dao.JobInfo;
 import org.apache.hadoop.mapreduce.v2.util.MRApps;
 import org.apache.hadoop.mapreduce.v2.util.MRApps.TaskAttemptStateUI;
-import org.apache.hadoop.security.authorize.AccessControlList;
 import org.apache.hadoop.util.StringUtils;
-import org.apache.hadoop.yarn.api.records.NodeId;
-import org.apache.hadoop.yarn.util.BuilderUtils;
 import org.apache.hadoop.yarn.util.Times;
 import org.apache.hadoop.yarn.webapp.ResponseInfo;
 import org.apache.hadoop.yarn.webapp.hamlet.Hamlet;
@@ -142,7 +132,8 @@ public class HsJobBlock extends HtmlBlock {
             table.tr((odd = !odd) ? _ODD : _EVEN).
               td(String.valueOf(attempt.getAttemptId())).
               td(new Date(attempt.getStartTime()).toString()).
-              td().a(".nodelink", url("http://", attempt.getNodeHttpAddress()), 
+              td().a(".nodelink", url(HttpConfig.getSchemePrefix(),
+                  attempt.getNodeHttpAddress()),
                   attempt.getNodeHttpAddress())._().
               td().a(".logslink", url(attempt.getShortLogsLink()), 
                       "logs")._().

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/main/java/org/apache/hadoop/mapreduce/v2/hs/webapp/HsTaskPage.java

@@ -29,6 +29,7 @@
 
 import java.util.Collection;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskId;
 import org.apache.hadoop.mapreduce.v2.api.records.TaskType;
 import org.apache.hadoop.mapreduce.v2.app.job.TaskAttempt;
@@ -143,7 +144,7 @@ protected void render(Block html) {
 
         td.br().$title(String.valueOf(sortId))._(). // sorting
             _(taid)._().td(ta.getState().toString()).td().a(".nodelink",
-                "http://"+ nodeHttpAddr,
+                HttpConfig.getSchemePrefix()+ nodeHttpAddr,
                 nodeRackName + "/" + nodeHttpAddr);
         td._();
         row.td().

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/main/java/org/apache/hadoop/mapred/ClientServiceDelegate.java

@@ -32,6 +32,7 @@
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeysPublic;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.mapreduce.JobID;
 import org.apache.hadoop.mapreduce.JobStatus;
 import org.apache.hadoop.mapreduce.MRJobConfig;
@@ -393,7 +394,7 @@ public JobStatus getJobStatus(JobID oldJobID) throws IOException {
       String url = StringUtils.isNotEmpty(historyTrackingUrl)
           ? historyTrackingUrl : trackingUrl;
       if (!UNAVAILABLE.equals(url)) {
-        url = "http://" + url;
+        url = HttpConfig.getSchemePrefix() + url;
       }
       jobStatus = TypeConverter.fromYarn(report, url);
     }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmapp/attempt/RMAppAttemptImpl.java

@@ -33,6 +33,7 @@
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
 import org.apache.hadoop.yarn.api.records.ApplicationResourceUsageReport;
 import org.apache.hadoop.yarn.api.records.FinalApplicationStatus;
@@ -393,13 +394,13 @@ private String generateProxyUriWithoutScheme(
       final String trackingUriWithoutScheme) {
     this.readLock.lock();
     try {
-      URI trackingUri = trackingUriWithoutScheme == null ? null : 
+      URI trackingUri = trackingUriWithoutScheme == null ? null :
         ProxyUriUtils.getUriFromAMUrl(trackingUriWithoutScheme);
       URI proxyUri = ProxyUriUtils.getUriFromAMUrl(proxy);
-      URI result = ProxyUriUtils.getProxyUri(trackingUri, proxyUri, 
+      URI result = ProxyUriUtils.getProxyUri(trackingUri, proxyUri,
           applicationAttemptId.getApplicationId());
       //We need to strip off the scheme to have it match what was there before
-      return result.toASCIIString().substring(7);
+      return result.toASCIIString().substring(HttpConfig.getSchemePrefix().length());
     } catch (URISyntaxException e) {
       LOG.warn("Could not proxify "+trackingUriWithoutScheme,e);
       return trackingUriWithoutScheme;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/AppBlock.java

@@ -30,6 +30,7 @@
 
 import com.google.inject.Inject;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.util.StringUtils;
 import org.apache.hadoop.yarn.api.records.ApplicationAccessType;
@@ -137,7 +138,8 @@ protected void render(Block html) {
       table.tr((odd = !odd) ? _ODD : _EVEN).
         td(String.valueOf(attemptInfo.getAttemptId())).
         td(Times.format(attemptInfo.getStartTime())).
-        td().a(".nodelink", url("http://", attemptInfo.getNodeHttpAddress()),
+        td().a(".nodelink", url(HttpConfig.getSchemePrefix(),
+            attemptInfo.getNodeHttpAddress()),
             attemptInfo.getNodeHttpAddress())._().
         td().a(".logslink", url(attemptInfo.getLogsLink()), "logs")._().
       _();

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/NodesPage.java

@@ -26,6 +26,7 @@
 
 import java.util.Collection;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.util.StringUtils;
 import org.apache.hadoop.yarn.api.records.NodeState;
 import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
@@ -118,7 +119,8 @@ protected void render(Block html) {
           row.td()._("N/A")._();
         } else {
           String httpAddress = info.getNodeHTTPAddress();
-          row.td().a("http://" + httpAddress, httpAddress)._();
+          row.td().a(HttpConfig.getSchemePrefix() + httpAddress,
+              httpAddress)._();
         }
         row.td(info.getHealthStatus()).
             td().br().$title(String.valueOf(info.getLastHealthUpdate()))._().

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/AppAttemptInfo.java

@@ -23,6 +23,7 @@
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlRootElement;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttempt;
 import org.apache.hadoop.yarn.util.ConverterUtils;
@@ -55,7 +56,8 @@ public AppAttemptInfo(RMAppAttempt attempt) {
         this.containerId = masterContainer.getId().toString();
         this.nodeHttpAddress = masterContainer.getNodeHttpAddress();
         this.nodeId = masterContainer.getNodeId().toString();
-        this.logsLink = join("http://", masterContainer.getNodeHttpAddress(),
+        this.logsLink = join(HttpConfig.getSchemePrefix(),
+            masterContainer.getNodeHttpAddress(),
             "/node", "/containerlogs/",
             ConverterUtils.toString(masterContainer.getId()),
             "/", attempt.getSubmissionContext().getUser());

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/dao/AppInfo.java

@@ -24,6 +24,7 @@
 import javax.xml.bind.annotation.XmlRootElement;
 import javax.xml.bind.annotation.XmlTransient;
 
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.api.records.Container;
 import org.apache.hadoop.yarn.api.records.FinalApplicationStatus;
@@ -87,10 +88,10 @@ public AppInfo(RMApp app, Boolean hasAccess) {
       this.trackingUI = this.trackingUrlIsNotReady ? "UNASSIGNED" : (app
           .getFinishTime() == 0 ? "ApplicationMaster" : "History");
       if (!trackingUrlIsNotReady) {
-        this.trackingUrl = join("http://", trackingUrl);
+        this.trackingUrl = join(HttpConfig.getSchemePrefix(), trackingUrl);
       }
       this.trackingUrlPretty = trackingUrlIsNotReady ? "UNASSIGNED" : join(
-          "http://", trackingUrl);
+          HttpConfig.getSchemePrefix(), trackingUrl);
       this.applicationId = app.getApplicationId();
       this.appIdNum = String.valueOf(app.getApplicationId().getId());
       this.id = app.getApplicationId().toString();
@@ -104,7 +105,6 @@ public AppInfo(RMApp app, Boolean hasAccess) {
       }
       this.finalStatus = app.getFinalApplicationStatus();
       this.clusterId = ResourceManager.clusterTimeStamp;
-
       if (hasAccess) {
         this.startedTime = app.getStartTime();
         this.finishedTime = app.getFinishTime();
@@ -116,7 +116,8 @@ public AppInfo(RMApp app, Boolean hasAccess) {
           Container masterContainer = attempt.getMasterContainer();
           if (masterContainer != null) {
             this.amContainerLogsExist = true;
-            String url = join("http://", masterContainer.getNodeHttpAddress(),
+            String url = join(HttpConfig.getSchemePrefix(),
+                masterContainer.getNodeHttpAddress(),
                 "/node", "/containerlogs/",
                 ConverterUtils.toString(masterContainer.getId()),
                 "/", app.getUser());

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-web-proxy/src/main/java/org/apache/hadoop/yarn/server/webproxy/ProxyUriUtils.java

@@ -27,6 +27,7 @@
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
 
 public class ProxyUriUtils {
@@ -138,8 +139,8 @@ public static URI getProxyUri(URI originalUri, URI proxyUri,
    * @return a URI with an http scheme
    * @throws URISyntaxException if the url is not formatted correctly.
    */
-  public static URI getUriFromAMUrl(String noSchemeUrl) 
+  public static URI getUriFromAMUrl(String noSchemeUrl)
     throws URISyntaxException {
-    return new URI("http://"+noSchemeUrl);
+      return new URI(HttpConfig.getSchemePrefix() + noSchemeUrl);
   }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-web-proxy/src/main/java/org/apache/hadoop/yarn/server/webproxy/amfilter/AmFilterInitializer.java

@@ -24,6 +24,7 @@
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.http.FilterContainer;
 import org.apache.hadoop.http.FilterInitializer;
+import org.apache.hadoop.http.HttpConfig;
 import org.apache.hadoop.yarn.api.ApplicationConstants;
 import org.apache.hadoop.yarn.conf.YarnConfiguration;
 
@@ -37,7 +38,8 @@ public void initFilter(FilterContainer container, Configuration conf) {
     String proxy = YarnConfiguration.getProxyHostAndPort(conf);
     String[] parts = proxy.split(":");
     params.put(AmIpFilter.PROXY_HOST, parts[0]);
-    params.put(AmIpFilter.PROXY_URI_BASE, "http://"+proxy+
+    params.put(AmIpFilter.PROXY_URI_BASE,
+        HttpConfig.getSchemePrefix() + proxy +
         System.getenv(ApplicationConstants.APPLICATION_WEB_PROXY_BASE_ENV));
     container.addFilter(FILTER_NAME, FILTER_CLASS, params);
   }