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+<span class="sourceLineNo">064</span>    conf = HBaseConfiguration.create();<a 
name="line.64"></a>
+<span class="sourceLineNo">065</span>    String principal = 
conf.get(Constants.REST_KERBEROS_PRINCIPAL);<a name="line.65"></a>
+<span class="sourceLineNo">066</span>    if (principal != null) {<a 
name="line.66"></a>
+<span class="sourceLineNo">067</span>      secure = true;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>    }<a name="line.68"></a>
+<span class="sourceLineNo">069</span>    if (args.length &gt;= 3) {<a 
name="line.69"></a>
+<span class="sourceLineNo">070</span>      secure = 
Boolean.parseBoolean(args[2]);<a name="line.70"></a>
+<span class="sourceLineNo">071</span>    }<a name="line.71"></a>
+<span class="sourceLineNo">072</span><a name="line.72"></a>
+<span class="sourceLineNo">073</span>    final RESTDemoClient client = new 
RESTDemoClient();<a name="line.73"></a>
+<span class="sourceLineNo">074</span>    Subject.doAs(getSubject(), new 
PrivilegedExceptionAction&lt;Void&gt;() {<a name="line.74"></a>
+<span class="sourceLineNo">075</span>      @Override<a name="line.75"></a>
+<span class="sourceLineNo">076</span>      public Void run() throws Exception 
{<a name="line.76"></a>
+<span class="sourceLineNo">077</span>        client.run();<a 
name="line.77"></a>
+<span class="sourceLineNo">078</span>        return null;<a name="line.78"></a>
+<span class="sourceLineNo">079</span>      }<a name="line.79"></a>
+<span class="sourceLineNo">080</span>    });<a name="line.80"></a>
+<span class="sourceLineNo">081</span>  }<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span>  public void run() throws Exception {<a 
name="line.83"></a>
+<span class="sourceLineNo">084</span>    Cluster cluster = new Cluster();<a 
name="line.84"></a>
+<span class="sourceLineNo">085</span>    cluster.add(host, port);<a 
name="line.85"></a>
+<span class="sourceLineNo">086</span>    Client restClient = new 
Client(cluster, conf.getBoolean(Constants.REST_SSL_ENABLED, false));<a 
name="line.86"></a>
+<span class="sourceLineNo">087</span>    try (RemoteHTable remoteTable = new 
RemoteHTable(restClient, conf, "example")) {<a name="line.87"></a>
+<span class="sourceLineNo">088</span>      // Write data to the table<a 
name="line.88"></a>
+<span class="sourceLineNo">089</span>      String rowKey = "row1";<a 
name="line.89"></a>
+<span class="sourceLineNo">090</span>      Put p = new 
Put(rowKey.getBytes());<a name="line.90"></a>
+<span class="sourceLineNo">091</span>      p.addColumn("family1".getBytes(), 
"qualifier1".getBytes(), "value1".getBytes());<a name="line.91"></a>
+<span class="sourceLineNo">092</span>      remoteTable.put(p);<a 
name="line.92"></a>
+<span class="sourceLineNo">093</span><a name="line.93"></a>
+<span class="sourceLineNo">094</span>      // Get the data from the table<a 
name="line.94"></a>
+<span class="sourceLineNo">095</span>      Get g = new 
Get(rowKey.getBytes());<a name="line.95"></a>
+<span class="sourceLineNo">096</span>      Result result = 
remoteTable.get(g);<a name="line.96"></a>
+<span class="sourceLineNo">097</span><a name="line.97"></a>
+<span class="sourceLineNo">098</span>      Preconditions.checkArgument(result 
!= null,<a name="line.98"></a>
+<span class="sourceLineNo">099</span>        
Bytes.toString(remoteTable.getTableName()) + " should have a row with key as " 
+ rowKey);<a name="line.99"></a>
+<span class="sourceLineNo">100</span>      System.out.println("row = " + new 
String(result.getRow()));<a name="line.100"></a>
+<span class="sourceLineNo">101</span>      for (Cell cell : result.rawCells()) 
{<a name="line.101"></a>
+<span class="sourceLineNo">102</span>        System.out.print("family = " + 
Bytes.toString(CellUtil.cloneFamily(cell)) + "\t");<a name="line.102"></a>
+<span class="sourceLineNo">103</span>        System.out.print("qualifier = " + 
Bytes.toString(CellUtil.cloneQualifier(cell)) + "\t");<a name="line.103"></a>
+<span class="sourceLineNo">104</span>        System.out.print("value = " + 
Bytes.toString(CellUtil.cloneValue(cell)) + "\t");<a name="line.104"></a>
+<span class="sourceLineNo">105</span>        System.out.println("timestamp = " 
+ Long.toString(cell.getTimestamp()));<a name="line.105"></a>
+<span class="sourceLineNo">106</span>      }<a name="line.106"></a>
+<span class="sourceLineNo">107</span>    }<a name="line.107"></a>
+<span class="sourceLineNo">108</span>  }<a name="line.108"></a>
+<span class="sourceLineNo">109</span><a name="line.109"></a>
+<span class="sourceLineNo">110</span>  static Subject getSubject() throws 
Exception {<a name="line.110"></a>
+<span class="sourceLineNo">111</span>    if (!secure) {<a name="line.111"></a>
+<span class="sourceLineNo">112</span>      return new Subject();<a 
name="line.112"></a>
+<span class="sourceLineNo">113</span>    }<a name="line.113"></a>
+<span class="sourceLineNo">114</span><a name="line.114"></a>
+<span class="sourceLineNo">115</span>    /*<a name="line.115"></a>
+<span class="sourceLineNo">116</span>     * To authenticate the demo client, 
kinit should be invoked ahead. Here we try to get the<a name="line.116"></a>
+<span class="sourceLineNo">117</span>     * Kerberos credential from the 
ticket cache.<a name="line.117"></a>
+<span class="sourceLineNo">118</span>     */<a name="line.118"></a>
+<span class="sourceLineNo">119</span>    LoginContext context = new 
LoginContext("", new Subject(), null, new Configuration() {<a 
name="line.119"></a>
+<span class="sourceLineNo">120</span>      @Override<a name="line.120"></a>
+<span class="sourceLineNo">121</span>      public AppConfigurationEntry[] 
getAppConfigurationEntry(String name) {<a name="line.121"></a>
+<span class="sourceLineNo">122</span>        Map&lt;String, String&gt; options 
= new HashMap&lt;&gt;();<a name="line.122"></a>
+<span class="sourceLineNo">123</span>        options.put("useKeyTab", 
"false");<a name="line.123"></a>
+<span class="sourceLineNo">124</span>        options.put("storeKey", 
"false");<a name="line.124"></a>
+<span class="sourceLineNo">125</span>        options.put("doNotPrompt", 
"true");<a name="line.125"></a>
+<span class="sourceLineNo">126</span>        options.put("useTicketCache", 
"true");<a name="line.126"></a>
+<span class="sourceLineNo">127</span>        options.put("renewTGT", 
"true");<a name="line.127"></a>
+<span class="sourceLineNo">128</span>        options.put("refreshKrb5Config", 
"true");<a name="line.128"></a>
+<span class="sourceLineNo">129</span>        options.put("isInitiator", 
"true");<a name="line.129"></a>
+<span class="sourceLineNo">130</span>        String ticketCache = 
System.getenv("KRB5CCNAME");<a name="line.130"></a>
+<span class="sourceLineNo">131</span>        if (ticketCache != null) {<a 
name="line.131"></a>
+<span class="sourceLineNo">132</span>          options.put("ticketCache", 
ticketCache);<a name="line.132"></a>
+<span class="sourceLineNo">133</span>        }<a name="line.133"></a>
+<span class="sourceLineNo">134</span>        options.put("debug", "true");<a 
name="line.134"></a>
+<span class="sourceLineNo">135</span><a name="line.135"></a>
+<span class="sourceLineNo">136</span>        return new 
AppConfigurationEntry[] {<a name="line.136"></a>
+<span class="sourceLineNo">137</span>          new 
AppConfigurationEntry("com.sun.security.auth.module.Krb5LoginModule",<a 
name="line.137"></a>
+<span class="sourceLineNo">138</span>                
AppConfigurationEntry.LoginModuleControlFlag.REQUIRED, options) };<a 
name="line.138"></a>
+<span class="sourceLineNo">139</span>      }<a name="line.139"></a>
+<span class="sourceLineNo">140</span>    });<a name="line.140"></a>
+<span class="sourceLineNo">141</span>    context.login();<a 
name="line.141"></a>
+<span class="sourceLineNo">142</span>    return context.getSubject();<a 
name="line.142"></a>
+<span class="sourceLineNo">143</span>  }<a name="line.143"></a>
+<span class="sourceLineNo">144</span>}<a name="line.144"></a>
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+</pre>
+</div>
+</body>
+</html>

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