HDFS-5334. Implement dfshealth.jsp in HTML pages. Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1532949 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -255,7 +255,9 @@ Release 2.3.0 - UNRELEASED
 
     HDFS-5342. Provide more information in the FSNamesystem JMX interfaces.
     (Haohui Mai via jing9)
- 
+
+    HDFS-5334. Implement dfshealth.jsp in HTML pages. (Haohui Mai via jing9)
+
   IMPROVEMENTS
 
     HDFS-5267. Remove volatile from LightWeightHashSet. (Junping Du via llu)

hadoop-hdfs-project/hadoop-hdfs/pom.xml

@@ -542,6 +542,9 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
             <exclude>src/main/docs/releasenotes.html</exclude>
             <exclude>src/contrib/**</exclude>
             <exclude>src/site/resources/images/*</exclude>
+            <exclude>src/main/webapps/static/dust-full-2.0.0.min.js</exclude>
+            <exclude>src/main/webapps/static/dust-helpers-1.1.1.min.js</exclude>
+            <exclude>src/main/webapps/hdfs/dfshealth.dust.html</exclude>
           </excludes>
         </configuration>
       </plugin>

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/dfs-dust.js

@@ -0,0 +1,116 @@
+/**
+ * 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.
+ */
+(function ($, dust, exports) {
+  "use strict";
+
+  var filters = {
+    'fmt_bytes': function (v) {
+      var UNITS = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'ZB'];
+      var prev = 0, i = 0;
+      while (Math.floor(v) > 0 && i < UNITS.length) {
+        prev = v;
+        v /= 1024;
+        i += 1;
+      }
+
+      if (i > 0 && i < UNITS.length) {
+        v = prev;
+        i -= 1;
+      }
+      return Math.round(v * 100) / 100 + ' ' + UNITS[i];
+    },
+
+    'fmt_percentage': function (v) {
+      return Math.round(v * 100) / 100 + '%';
+    },
+
+    'fmt_time': function (v) {
+      var s = Math.floor(v / 1000), h = Math.floor(s / 3600);
+      s -= h * 3600;
+      var m = Math.floor(s / 60);
+      s -= m * 60;
+
+      var res = s + " sec";
+      if (m !== 0) {
+        res = m + " mins, " + res;
+      }
+
+      if (h !== 0) {
+        res = h + " hrs, " + res;
+      }
+
+      return res;
+    }
+  };
+  $.extend(dust.filters, filters);
+
+  /**
+   * Load templates from external sources in sequential orders, and
+   * compile them. The loading order is important to resolve dependency.
+   *
+   * The code compile the templates on the client sides, which should be
+   * precompiled once we introduce the infrastructure in the building
+   * system.
+   *
+   * templates is an array of tuples in the format of {url, name}.
+   */
+  function load_templates(dust, templates, success_cb, error_cb) {
+    if (templates.length === 0) {
+      success_cb();
+      return;
+    }
+
+    var t = templates.shift();
+    $.get(t.url, function (tmpl) {
+      var c = dust.compile(tmpl, t.name);
+      dust.loadSource(c);
+      load_templates(dust, templates, success_cb, error_cb);
+    }).error(function (jqxhr, text, err) {
+      error_cb(t.url, jqxhr, text, err);
+    });
+  }
+
+  /**
+   * Load a sequence of JSON.
+   *
+   * beans is an array of tuples in the format of {url, name}.
+   */
+  function load_json(beans, success_cb, error_cb) {
+    var data = {}, error = false, to_be_completed = beans.length;
+
+    $.each(beans, function(idx, b) {
+      if (error) {
+        return false;
+      }
+      $.get(b.url, function (resp) {
+        data[b.name] = resp;
+        to_be_completed -= 1;
+        if (to_be_completed === 0) {
+          success_cb(data);
+        }
+      }).error(function (jqxhr, text, err) {
+        error = true;
+        error_cb(b.url, jqxhr, text, err);
+      });
+    });
+  }
+
+  exports.load_templates = load_templates;
+  exports.load_json = load_json;
+
+}($, dust, window));

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/dfshealth.dust.html

@@ -0,0 +1,266 @@
+<div class="page-header">
+  {#nnstat}
+  <h1>NameNode '{HostAndPort}' ({State})</h1>
+  {/nnstat}
+</div>
+
+{#nn}
+{@if cond="{DistinctVersionCount} > 1"}
+<div class="alert alert-dismissable alert-success">
+  <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
+
+  There are {DistinctVersionCount} versions of datanodes currently live: 
+  {#DistinctVersions}
+  {key} ({value}) {@sep},{/sep}
+  {/DistinctVersions}
+</div>
+{/if}
+
+{@if cond="{NumberOfMissingBlocks} > 0"}
+<div class="alert alert-dismissable alert-warning">
+  <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
+
+  <p>There are {NumberOfMissingBlocks} missing blocks. The following files may be corrupted:</p>
+  <br/>
+  <div class="well">
+    {#CorruptFiles}
+    {.}<br/>
+    {/CorruptFiles}
+  </div>
+  <p>Please check the logs or run fsck in order to identify the missing blocks. See the Hadoop FAQ for common causes and potential solutions.</p>
+</div>
+{/if}
+{/nn}
+
+<div class="panel panel-primary">
+  <div class="panel-heading">Overview</div>
+  <div class="panel-body">
+    {#nn}
+    <table class="table table-bordered">
+      <tr><th>Started:</th><td>{NNStarted}</td></tr>
+      <tr><th>Version:</th><td>{Version}</td></tr>
+      <tr><th>Compiled:</th><td>{CompileInfo}</td></tr>
+      <tr><th>Cluster ID:</th><td>{ClusterId}</td></tr>
+      <tr><th>Block Pool ID:</th><td>{BlockPoolId}</td></tr>
+    </table>
+    {/nn}
+  </div>
+</div>
+
+<a id="browse-dir-first" style="cursor:pointer">Browse the filesystem</a>  <a href="/logs/">NameNode Logs</a>
+
+<hr/>
+
+<div class="panel panel-primary">
+  <div class="panel-heading">Cluster Summary</div>
+  <div class="panel-body">
+
+    <p>
+      Security is {#nnstat}{#SecurityModeEnabled}on{:else}off{/SecurityModeEnabled}{/nnstat}.</p>
+    <p>{#nn}{#Safemode}{.}{:else}Safemode is off.{/Safemode}{/nn}</p>
+
+    <p>
+      {#fs}
+      {TotalLoad} files and directories, {BlocksTotal} blocks = {FilesTotal} total filesystem object(s).
+      {#helper_fs_max_objects/}
+      {/fs}
+    </p>
+    {#mem.HeapMemoryUsage}
+    <p>Heap Memory used {used|fmt_bytes} of {committed|fmt_bytes} Heap Memory. Max Heap Memory is {max|fmt_bytes}. </p>
+    {/mem.HeapMemoryUsage}
+
+    {#mem.NonHeapMemoryUsage}
+    <p>Non Heap Memory used {used|fmt_bytes} of {committed|fmt_bytes} Commited Non Heap Memory. Max Non Heap Memory is {max|fmt_bytes}. </p>
+    {/mem.NonHeapMemoryUsage}
+
+    {#nn}
+    <table class="table table-bordered table-striped">
+      <tr><th> Configured Capacity:</th><td>{Total|fmt_bytes}</td></tr>
+      <tr><th> DFS Used:</th><td>{Used|fmt_bytes}</td></tr>
+      <tr><th> Non DFS Used:</th><td>{NonDfsUsedSpace|fmt_bytes}</td></tr>
+      <tr><th> DFS Remaining:</th><td>{Free|fmt_bytes}</td></tr>
+      <tr><th> DFS Used%:</th><td>{PercentUsed|fmt_percentage}</td></tr>
+      <tr><th> DFS Remaining%:</th><td>{PercentRemaining|fmt_percentage}</td></tr>
+      <tr><th> Block Pool Used:</th><td>{BlockPoolUsedSpace|fmt_bytes}</td></tr>
+      <tr><th> Block Pool Used%:</th><td>{PercentBlockPoolUsed|fmt_percentage}</td></tr>
+      <tr><th> DataNodes usages% (Min/Median/Max/stdDev): </th>
+	<td>{#NodeUsage.nodeUsage}{min} / {median} / {max} / {stdDev}{/NodeUsage.nodeUsage}</td></tr>
+      {/nn}
+
+      {#fs}
+      <tr><th><a href="dfsnodelist.jsp?whatNodes=LIVE">Live Nodes</a></th><td>{NumLiveDataNodes} (Decommissioned: {NumDecomLiveDataNodes})</td></tr>
+      <tr><th><a href="dfsnodelist.jsp?whatNodes=DEAD">Dead Nodes</a></th><td>{NumDeadDataNodes} (Decommissioned: {NumDecomDeadDataNodes})</td></tr>
+      <tr><th><a href="dfsnodelist.jsp?whatNodes=DECOMMISSIONING">Decommissioning Nodes</a></th><td>{NumDecommissioningDataNodes}</td></tr>
+      <tr><th title="Excludes missing blocks.">Number of Under-Replicated Blocks</th><td>{UnderReplicatedBlocks}</td></tr>
+      {/fs}
+    </table>
+  </div>
+</div>
+
+<hr/>
+<div class="panel panel-primary">
+  <div class="panel-heading">NameNode Journal Status</div>
+  <div class="panel-body">
+    <p><b>Current transaction ID:</b> {nn.JournalTransactionInfo.LastAppliedOrWrittenTxId}</p>
+    <table class="table" title="NameNode Journals">
+      <thead>
+	<tr><th>Journal Manager</th><th>State</th></tr>
+      </thead>
+      <tbody>
+	{#nn.NameJournalStatus}
+	<tr><td>{manager}</td><td>{stream}</td></tr>
+	{/nn.NameJournalStatus}
+      </tbody>
+    </table>
+  </div>
+</div>
+
+<hr/>
+<div class="panel panel-primary">
+  <div class="panel-heading">NameNode Storage</div>
+  <div class="panel-body">
+    <table class="table" title="NameNode Storage">
+      <thead><tr><td><b>Storage Directory</b></td><td><b>Type</b></td><td><b>State</b></td></tr></thead>
+      {#nn.NameDirStatuses}
+      {#active}{#helper_dir_status type="Active"/}{/active}
+      {#failed}{#helper_dir_status type="Failed"/}{/failed}
+      {/nn.NameDirStatuses}
+    </table>
+  </div>
+</div>
+<hr/>
+
+<div class="panel panel-primary">
+  <div class="panel-heading">Snapshot Summary</div>
+  <div class="panel-body">
+    {#fs.SnapshotStats}
+    <table class="table" title="Snapshot Summary">
+      <thead><tr><td><b>Snapshottable directories</b></td>
+	  <td><b>Snapshotted directories</b></td></tr>
+      </thead>
+      <tbody>
+	<tr>
+	  <td>{SnapshottableDirectories}</td>
+	  <td>{Snapshots}</td>
+	</tr>
+      </tbody>
+    </table>
+    {/fs.SnapshotStats}
+  </div>
+</div>
+<hr/>
+
+{#startup}
+<div class="panel panel-primary">
+  <div class="panel-heading">Startup Progress</div>
+  <div class="panel-body">
+    <p>Elapsed Time: {elapsedTime|fmt_time}, Percent Complete: {percentComplete|fmt_percentage}</p>
+    <table class="table">
+      <thead>
+	<tr>
+	  <th>Phase</th>
+	  <th>Completion</th>
+	  <th>Elapsed Time</th>
+	</tr>
+      </thead>
+      <tbody>
+	{#phases}
+	<tr class="phase">
+	  <td class="startupdesc">{desc} {file} {size|fmt_bytes}</td>
+	  <td>{percentComplete|fmt_percentage}</td>
+	  <td>{elapsedTime|fmt_time}</td>
+	</tr>
+	{#steps root_file=file}
+	<tr class="step">
+	  <td class="startupdesc">{stepDesc} {stepFile} {stepSize|fmt_bytes} ({count}/{total})</td>
+	  <td>{percentComplete|fmt_percentage}</td>
+	  <td></td>
+	</tr>
+	{/steps}
+	{/phases}
+    </table>
+  </div>
+</div>
+{/startup}
+
+<hr/>
+<div class="panel panel-primary">
+  <div class="panel-heading">Datanode Information</div>
+  <div class="panel-body">
+    <div class="panel panel-default" id="nodelist-operation">
+      <div class="panel-heading">Nodes in operation</div>
+      <div class="panel-body">
+        <table class="table">
+          <thead>
+            <tr>
+              <th>Node</th>
+              <th>Last contact</th>
+              <th>Admin State</th>
+              <th>Capacity</th>
+              <th>Used</th>
+              <th>Non DFS Used</th>
+              <th>Remaining</th>
+              <th>Blocks</th>
+              <th>Block pool used</th>
+              <th>Failed Volumes</th>
+            </tr>
+          </thead>
+          {#nn.LiveNodes}
+          <tr>
+            <td><a class="browse-dir-links" info-http-addr="{infoAddr}" info-https-addr="{infoSecureAddr}">{name}</a> ({xferaddr})</td>
+            <td>{lastContact}</td>
+            <td>{adminState}</td>
+            <td>{capacity|fmt_bytes}</td>
+            <td>{used|fmt_bytes}</td>
+            <td>{nonDfsUsedSpace|fmt_bytes}</td>
+            <td>{remaining|fmt_bytes}</td>
+            <td>{numBlocks}</td>
+            <td>{blockPoolUsed|fmt_bytes} ({blockPoolUsedPercent|fmt_percentage})</td>
+            <td>{volfails}</td>
+          </tr>
+          {/nn.LiveNodes}
+          {#nn.DeadNodes}
+          <tr class="danger">
+            <td>{name} ({xferaddr})</td>
+            <td>{lastContact}</td>
+            <td>Dead{?decomissioned}, Decomissioned{/decomissioned}</td>
+            <td>-</td>
+            <td>-</td>
+            <td>-</td>
+            <td>-</td>
+            <td>-</td>
+            <td>-</td>
+            <td>-</td>
+          </tr>
+          {/nn.DeadNodes}
+        </table>
+      </div>
+    </div>
+    <div class="panel panel-default" id="nodelist-decom">
+      <div class="panel-heading">Nodes being decomissioned</div>
+      <div class="panel-body">
+        <table class="table">
+          <thead>
+            <tr>
+              <th>Node</th>
+              <th>Last contact</th>
+              <th>Under replicated blocks</th>
+              <th>Blocks with no live replicas</th>
+              <th>Under Replicated Blocks <br/>In files under construction</th>
+            </tr>
+          </thead>
+          {#nn.DecomNodes}
+          <tr>
+            <td>{name} ({xferaddr})</td>
+            <td>{lastContact}</td>
+            <td>{underReplicatedBlocks}</td>
+            <td>{decommissionOnlyReplicas}</td>
+	    <td>{underReplicateInOpenFiles}</td>
+	  </tr>
+	  {/nn.DecomNodes}
+	</table>
+      </div>
+    </div>
+  </div>
+</div>
+>>>>>>> 801ea4f... Fix for dfshealth

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/dfshealth.html

@@ -0,0 +1,43 @@
+<!--
+   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.
+-->
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<link rel="stylesheet" type="text/css" href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" />
+<link rel="stylesheet" type="text/css" href="/static/hadoop.css" />
+<title>Namenode information</title>
+</head>
+<body>
+<div class="container">
+<div class="alert alert-danger" id="alert-panel" style="display:none">
+<button type="button" class="close" onclick="$('#alert-panel').hide();">&times;</button>
+<div class="alert-body" id="alert-panel-body"></div>
+</div>
+<div id="panel"></div>
+</div>
+<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js">
+</script><script type="text/javascript" src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js">
+</script><script type="text/javascript" src="/static/dust-full-2.0.0.min.js">
+</script><script type="text/javascript" src="/static/dust-helpers-1.1.1.min.js">
+</script><script type="text/javascript" src="dfs-dust.js">
+</script><script type="text/javascript" src="dfshealth.js">
+</script>
+<hr />
+<p><a href="http://hadoop.apache.org/core">Hadoop</a>, 2013.</p>
+</body>
+</html>

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/hdfs/dfshealth.js

@@ -0,0 +1,156 @@
+/**
+ * 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.
+ */
+(function () {
+  "use strict";
+
+  var data = {};
+  function generate_browse_dn_link(info_http_addr, info_https_addr) {
+    var is_https = window.location.protocol === 'https:';
+    var authority = is_https ? info_https_addr : info_http_addr;
+
+    var nn_info_port = window.location.port;
+    if (nn_info_port === "") {
+      nn_info_port = is_https ? 443 : 80;
+    }
+
+    var l = '//' + authority + '/browseDirectory.jsp?dir=%2F&namenodeInfoPort=' +
+      nn_info_port + '&nnaddr=' + data.nnstat.HostAndPort;
+    return l;
+  }
+
+  function render() {
+    var helpers = {
+      'helper_fs_max_objects': function (chunk, ctx, bodies, params) {
+        var o = ctx.current();
+        if (o.MaxObjects > 0) {
+          chunk.write('(' + Math.round((o.FilesTotal + o.BlockTotal) / o.MaxObjects * 100) * 100 + ')%');
+        }
+      },
+
+      'helper_dir_status': function (chunk, ctx, bodies, params) {
+        var j = ctx.current();
+        for (var i in j) {
+          chunk.write('<tr><td>' + i + '</td><td>' + j[i] + '</td><td>' + params.type + '</td></tr>');
+        }
+      }
+    };
+
+    var base = dust.makeBase(helpers);
+
+    var TEMPLATES = [ { 'name': 'dfshealth', 'url': 'dfshealth.dust.html' } ];
+
+    load_templates(dust, TEMPLATES, function() {
+      dust.render('dfshealth', base.push(data), function(err, out) {
+
+        $('#panel').append(out);
+
+        $('#browse-dir-first').click(function () {
+          var len = data.nn.LiveNodes.length;
+          if (len < 1) {
+            show_err_msg('Cannot browse the DFS since there are no live nodes available.');
+            return false;
+          }
+
+          var dn = data.nn.LiveNodes[Math.floor(Math.random() * len)];
+          window.location.href = generate_browse_dn_link(dn.infoAddr, dn.infoSecureAddr);
+        });
+
+        $('.browse-dir-links').click(function () {
+          var http_addr = $(this).attr('info-http-addr'), https_addr = $(this).attr('info-https-addr');
+          window.location.href = generate_browse_dn_link(http_addr, https_addr);
+        });
+      });
+    }, function () {
+      show_err_msg('Failed to load the page.');
+    });
+  }
+
+  var BEANS = [
+    {"name": "nn",      "url": "/jmx?qry=Hadoop:service=NameNode,name=NameNodeInfo"},
+    {"name": "nnstat",  "url": "/jmx?qry=Hadoop:service=NameNode,name=NameNodeStatus"},
+    {"name": "fs",      "url": "/jmx?qry=Hadoop:service=NameNode,name=FSNamesystemState"},
+    {"name": "mem",     "url": "/jmx?qry=java.lang:type=Memory"},
+    {"name": "startup", "url": "/startupProgress"}
+  ];
+
+  // Workarounds for the fact that JMXJsonServlet returns non-standard JSON strings
+  function data_workaround(d) {
+    function node_map_to_array(nodes) {
+      var res = [];
+      for (var n in nodes) {
+        var p = nodes[n];
+        p.name = n;
+        res.push(p);
+      }
+      return res;
+    }
+
+    function startup_progress_workaround(r) {
+      function rename_property(o, s, d) {
+        if (o[s] !== undefined) {
+          o[d] = o[s];
+          delete o[s];
+        }
+      }
+      r.percentComplete *= 100;
+      $.each(r.phases, function (idx, p) {
+        p.percentComplete *= 100;
+        $.each(p.steps, function (idx2, s) {
+          s.percentComplete *= 100;
+          // dust.js is confused by these optional keys in nested
+          // structure, rename them
+          rename_property(s, "desc", "stepDesc");
+          rename_property(s, "file", "stepFile");
+          rename_property(s, "size", "stepSize");
+        });
+      });
+      return r;
+    }
+
+    d.nn.JournalTransactionInfo = JSON.parse(d.nn.JournalTransactionInfo);
+    d.nn.NameJournalStatus = JSON.parse(d.nn.NameJournalStatus);
+    d.nn.NameDirStatuses = JSON.parse(d.nn.NameDirStatuses);
+    d.nn.NodeUsage = JSON.parse(d.nn.NodeUsage);
+    d.nn.LiveNodes = node_map_to_array(JSON.parse(d.nn.LiveNodes));
+    d.nn.DeadNodes = node_map_to_array(JSON.parse(d.nn.DeadNodes));
+    d.nn.DecomNodes = node_map_to_array(JSON.parse(d.nn.DecomNodes));
+    d.nn.CorruptFiles = JSON.parse(d.nn.CorruptFiles);
+
+    d.fs.SnapshotStats = JSON.parse(d.fs.SnapshotStats);
+    d.startup = startup_progress_workaround(d.startup);
+    return d;
+  }
+
+  function show_err_msg(msg) {
+    $('#alert-panel-body').html(msg);
+    $('#alert-panel').show();
+  }
+
+  load_json(
+    BEANS,
+    function(d) {
+      for (var k in d) {
+        data[k] = k === "startup" ? d[k] : d[k].beans[0];
+      }
+      data = data_workaround(data);
+      render();
+    },
+    function (url, jqxhr, text, err) {
+      show_err_msg('<p>Failed to retrieve data from ' + url + ', cause: ' + err + '</p>');
+    });
+})();

hadoop-hdfs-project/hadoop-hdfs/src/main/webapps/static/dust-helpers-1.1.1.min.js

@@ -0,0 +1,8 @@
+(function(k){function n(b){b=b.f();return"object"===typeof b&&!0===b.h}function p(b,c){return"function"===typeof c?c.toString():c}function l(b,c,d,a,e){a=a||{};var m=d.a,g,f,l=a.d||"";if("undefined"!==typeof a.key)g=k.b.c(a.key,b,c);else if(n(c))g=c.f().i,c.f().g&&(e=function(){return!1});else return h.log("No key specified for filter in:"+l+" helper "),b;f=k.b.c(a.value,b,c);if(e(q(f,a.type,c),q(g,a.type,c))){n(c)&&(c.f().g=!0);if(m)return b.e(m,c);h.log("Missing body block in the "+l+" helper ")}else if(d["else"])return b.e(d["else"],
+c);return b}function q(b,c,d){if(b)switch(c||typeof b){case "number":return+b;case "string":return String(b);case "boolean":return Boolean("false"===b?!1:b);case "date":return new Date(b);case "context":return d.get(b)}return b}var h="undefined"!==typeof console?console:{log:function(){}};k.b={tap:function(b,c,d){var a=b;"function"===typeof b&&(!0===b.l?a=b():(a="",c.c(function(b){a+=b;return""}).e(b,d).p(),""===a&&(a=!1)));return a},sep:function(b,c,d){return c.stack.index===c.stack.m-1?b:d.a?d.a(b,
+c):b},idx:function(b,c,d){return d.a?d.a(b,c.push(c.stack.index)):b},contextDump:function(b,c,d,a){a=a||{};d=a.o||"output";a=a.key||"current";d=k.b.c(d,b,c);a=k.b.c(a,b,c);c="full"===a?JSON.stringify(c.stack,p,2):JSON.stringify(c.stack.head,p,2);return"console"===d?(h.log(c),b):b.write(c)},"if":function(b,c,d,a){var e=d.a,m=d["else"];if(a&&a.j){a=a.j;a=k.b.c(a,b,c);if(eval(a)){if(e)return b.e(d.a,c);h.log("Missing body block in the if helper!");return b}if(m)return b.e(d["else"],c)}else h.log("No condition given in the if helper!");
+return b},math:function(b,c,d,a){if(a&&"undefined"!==typeof a.key&&a.method){var e=a.key,m=a.method,g=a.n;a=a.round;var f=null,e=k.b.c(e,b,c),g=k.b.c(g,b,c);switch(m){case "mod":0!==g&&-0!==g||h.log("operand for divide operation is 0/-0: expect Nan!");f=parseFloat(e)%parseFloat(g);break;case "add":f=parseFloat(e)+parseFloat(g);break;case "subtract":f=parseFloat(e)-parseFloat(g);break;case "multiply":f=parseFloat(e)*parseFloat(g);break;case "divide":0!==g&&-0!==g||h.log("operand for divide operation is 0/-0: expect Nan/Infinity!");
+f=parseFloat(e)/parseFloat(g);break;case "ceil":f=Math.ceil(parseFloat(e));break;case "floor":f=Math.floor(parseFloat(e));break;case "round":f=Math.round(parseFloat(e));break;case "abs":f=Math.abs(parseFloat(e));break;default:h.log("method passed is not supported")}if(null!==f)return a&&(f=Math.round(f)),d&&d.a?b.e(d.a,c.push({h:!0,g:!1,i:f})):b.write(f)}else h.log("Key is a required parameter for math helper along with method/operand!");return b},select:function(b,c,d,a){var e=d.a;if(a&&"undefined"!==
+typeof a.key){a=k.b.c(a.key,b,c);if(e)return b.e(d.a,c.push({h:!0,g:!1,i:a}));h.log("Missing body block in the select helper ")}else h.log("No key given in the select helper!");return b},eq:function(b,c,d,a){a&&(a.d="eq");return l(b,c,d,a,function(a,b){return b===a})},ne:function(b,c,d,a){return a?(a.d="ne",l(b,c,d,a,function(a,b){return b!==a})):b},lt:function(b,c,d,a){if(a)return a.d="lt",l(b,c,d,a,function(a,b){return b<a})},lte:function(b,c,d,a){return a?(a.d="lte",l(b,c,d,a,function(a,b){return b<=
+a})):b},gt:function(b,c,d,a){return a?(a.d="gt",l(b,c,d,a,function(a,b){return b>a})):b},gte:function(b,c,d,a){return a?(a.d="gte",l(b,c,d,a,function(a,b){return b>=a})):b},"default":function(b,c,d,a){a&&(a.d="default");return l(b,c,d,a,function(){return!0})},size:function(b,c,d,a){c=0;var e;a=a||{};if((a=a.key)&&!0!==a)if(k.isArray(a))c=a.length;else if(!isNaN(parseFloat(a))&&isFinite(a))c=a;else if("object"===typeof a)for(e in c=0,a)Object.hasOwnProperty.call(a,e)&&c++;else c=(a+"").length;else c=
+0;return b.write(c)}}})("undefined"!==typeof exports?module.k=require("dustjs-linkedin"):dust);