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From git-site-r...@apache.org
Subject [21/51] [partial] hbase-site git commit: Published site at 130057f13774f6b213cdb06952c805a29d59396e.
Date Thu, 15 Nov 2018 14:55:03 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/68eae623/devapidocs/src-html/org/apache/hadoop/hbase/security/access/AuthManager.PermissionCache.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/security/access/AuthManager.PermissionCache.html b/devapidocs/src-html/org/apache/hadoop/hbase/security/access/AuthManager.PermissionCache.html
new file mode 100644
index 0000000..4d5cbc9
--- /dev/null
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/security/access/AuthManager.PermissionCache.html
@@ -0,0 +1,680 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<pre><span class="sourceLineNo">001</span>/**<a name="line.1"></a>
+<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * or more contributor license agreements.  See the NOTICE file<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * regarding copyright ownership.  The ASF licenses this file<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * with the License.  You may obtain a copy of the License at<a name="line.8"></a>
+<span class="sourceLineNo">009</span> *<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *     http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
+<span class="sourceLineNo">011</span> *<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
+<span class="sourceLineNo">017</span> */<a name="line.17"></a>
+<span class="sourceLineNo">018</span><a name="line.18"></a>
+<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.security.access;<a name="line.19"></a>
+<span class="sourceLineNo">020</span><a name="line.20"></a>
+<span class="sourceLineNo">021</span>import java.io.Closeable;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.io.IOException;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.util.HashMap;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.util.HashSet;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.util.Map;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.Set;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.conf.Configuration;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.AuthUtil;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.Cell;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.TableName;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.log.HBaseMarkers;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.security.Superusers;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.security.User;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.security.UserProvider;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.zookeeper.ZKWatcher;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.zookeeper.KeeperException;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.slf4j.Logger;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.slf4j.LoggerFactory;<a name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hbase.thirdparty.com.google.common.collect.ListMultimap;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hbase.thirdparty.com.google.common.collect.Lists;<a name="line.49"></a>
+<span class="sourceLineNo">050</span><a name="line.50"></a>
+<span class="sourceLineNo">051</span>/**<a name="line.51"></a>
+<span class="sourceLineNo">052</span> * Performs authorization checks for a given user's assigned permissions.<a name="line.52"></a>
+<span class="sourceLineNo">053</span> * &lt;p&gt;<a name="line.53"></a>
+<span class="sourceLineNo">054</span> *   There're following scopes: &lt;b&gt;Global&lt;/b&gt;, &lt;b&gt;Namespace&lt;/b&gt;, &lt;b&gt;Table&lt;/b&gt;, &lt;b&gt;Family&lt;/b&gt;,<a name="line.54"></a>
+<span class="sourceLineNo">055</span> *   &lt;b&gt;Qualifier&lt;/b&gt;, &lt;b&gt;Cell&lt;/b&gt;.<a name="line.55"></a>
+<span class="sourceLineNo">056</span> *   Generally speaking, higher scopes can overrides lower scopes,<a name="line.56"></a>
+<span class="sourceLineNo">057</span> *   except for Cell permission can be granted even a user has not permission on specified table,<a name="line.57"></a>
+<span class="sourceLineNo">058</span> *   which means the user can get/scan only those granted cells parts.<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * &lt;/p&gt;<a name="line.59"></a>
+<span class="sourceLineNo">060</span> * e.g, if user A has global permission R(ead), he can<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * read table T without checking table scope permission, so authorization checks alway starts from<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * Global scope.<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * &lt;p&gt;<a name="line.63"></a>
+<span class="sourceLineNo">064</span> *   For each scope, not only user but also groups he belongs to will be checked.<a name="line.64"></a>
+<span class="sourceLineNo">065</span> * &lt;/p&gt;<a name="line.65"></a>
+<span class="sourceLineNo">066</span> */<a name="line.66"></a>
+<span class="sourceLineNo">067</span>@InterfaceAudience.Private<a name="line.67"></a>
+<span class="sourceLineNo">068</span>public final class AuthManager implements Closeable {<a name="line.68"></a>
+<span class="sourceLineNo">069</span><a name="line.69"></a>
+<span class="sourceLineNo">070</span>  /**<a name="line.70"></a>
+<span class="sourceLineNo">071</span>   * Cache of permissions, it is thread safe.<a name="line.71"></a>
+<span class="sourceLineNo">072</span>   * @param &lt;T&gt; T extends Permission<a name="line.72"></a>
+<span class="sourceLineNo">073</span>   */<a name="line.73"></a>
+<span class="sourceLineNo">074</span>  private static class PermissionCache&lt;T extends Permission&gt; {<a name="line.74"></a>
+<span class="sourceLineNo">075</span>    private final Object mutex = new Object();<a name="line.75"></a>
+<span class="sourceLineNo">076</span>    private Map&lt;String, Set&lt;T&gt;&gt; cache = new HashMap&lt;&gt;();<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span>    void put(String name, T perm) {<a name="line.78"></a>
+<span class="sourceLineNo">079</span>      synchronized (mutex) {<a name="line.79"></a>
+<span class="sourceLineNo">080</span>        Set&lt;T&gt; perms = cache.getOrDefault(name, new HashSet&lt;&gt;());<a name="line.80"></a>
+<span class="sourceLineNo">081</span>        perms.add(perm);<a name="line.81"></a>
+<span class="sourceLineNo">082</span>        cache.put(name, perms);<a name="line.82"></a>
+<span class="sourceLineNo">083</span>      }<a name="line.83"></a>
+<span class="sourceLineNo">084</span>    }<a name="line.84"></a>
+<span class="sourceLineNo">085</span><a name="line.85"></a>
+<span class="sourceLineNo">086</span>    Set&lt;T&gt; get(String name) {<a name="line.86"></a>
+<span class="sourceLineNo">087</span>      synchronized (mutex) {<a name="line.87"></a>
+<span class="sourceLineNo">088</span>        return cache.get(name);<a name="line.88"></a>
+<span class="sourceLineNo">089</span>      }<a name="line.89"></a>
+<span class="sourceLineNo">090</span>    }<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span>    void clear() {<a name="line.92"></a>
+<span class="sourceLineNo">093</span>      synchronized (mutex) {<a name="line.93"></a>
+<span class="sourceLineNo">094</span>        for (Map.Entry&lt;String, Set&lt;T&gt;&gt; entry : cache.entrySet()) {<a name="line.94"></a>
+<span class="sourceLineNo">095</span>          entry.getValue().clear();<a name="line.95"></a>
+<span class="sourceLineNo">096</span>        }<a name="line.96"></a>
+<span class="sourceLineNo">097</span>        cache.clear();<a name="line.97"></a>
+<span class="sourceLineNo">098</span>      }<a name="line.98"></a>
+<span class="sourceLineNo">099</span>    }<a name="line.99"></a>
+<span class="sourceLineNo">100</span>  }<a name="line.100"></a>
+<span class="sourceLineNo">101</span>  PermissionCache&lt;NamespacePermission&gt; NS_NO_PERMISSION = new PermissionCache&lt;&gt;();<a name="line.101"></a>
+<span class="sourceLineNo">102</span>  PermissionCache&lt;TablePermission&gt; TBL_NO_PERMISSION = new PermissionCache&lt;&gt;();<a name="line.102"></a>
+<span class="sourceLineNo">103</span><a name="line.103"></a>
+<span class="sourceLineNo">104</span>  /**<a name="line.104"></a>
+<span class="sourceLineNo">105</span>   * Cache for global permission.<a name="line.105"></a>
+<span class="sourceLineNo">106</span>   * Since every user/group can only have one global permission, no need to user PermissionCache.<a name="line.106"></a>
+<span class="sourceLineNo">107</span>   */<a name="line.107"></a>
+<span class="sourceLineNo">108</span>  private volatile Map&lt;String, GlobalPermission&gt; globalCache;<a name="line.108"></a>
+<span class="sourceLineNo">109</span>  /** Cache for namespace permission. */<a name="line.109"></a>
+<span class="sourceLineNo">110</span>  private ConcurrentHashMap&lt;String, PermissionCache&lt;NamespacePermission&gt;&gt; namespaceCache =<a name="line.110"></a>
+<span class="sourceLineNo">111</span>    new ConcurrentHashMap&lt;&gt;();<a name="line.111"></a>
+<span class="sourceLineNo">112</span>  /** Cache for table permission. */<a name="line.112"></a>
+<span class="sourceLineNo">113</span>  private ConcurrentHashMap&lt;TableName, PermissionCache&lt;TablePermission&gt;&gt; tableCache =<a name="line.113"></a>
+<span class="sourceLineNo">114</span>    new ConcurrentHashMap&lt;&gt;();<a name="line.114"></a>
+<span class="sourceLineNo">115</span><a name="line.115"></a>
+<span class="sourceLineNo">116</span>  private static final Logger LOG = LoggerFactory.getLogger(AuthManager.class);<a name="line.116"></a>
+<span class="sourceLineNo">117</span><a name="line.117"></a>
+<span class="sourceLineNo">118</span>  private Configuration conf;<a name="line.118"></a>
+<span class="sourceLineNo">119</span>  private ZKPermissionWatcher zkperms;<a name="line.119"></a>
+<span class="sourceLineNo">120</span>  private final AtomicLong mtime = new AtomicLong(0L);<a name="line.120"></a>
+<span class="sourceLineNo">121</span><a name="line.121"></a>
+<span class="sourceLineNo">122</span>  private AuthManager(ZKWatcher watcher, Configuration conf)<a name="line.122"></a>
+<span class="sourceLineNo">123</span>      throws IOException {<a name="line.123"></a>
+<span class="sourceLineNo">124</span>    this.conf = conf;<a name="line.124"></a>
+<span class="sourceLineNo">125</span>    // initialize global permissions based on configuration<a name="line.125"></a>
+<span class="sourceLineNo">126</span>    globalCache = initGlobal(conf);<a name="line.126"></a>
+<span class="sourceLineNo">127</span><a name="line.127"></a>
+<span class="sourceLineNo">128</span>    this.zkperms = new ZKPermissionWatcher(watcher, this, conf);<a name="line.128"></a>
+<span class="sourceLineNo">129</span>    try {<a name="line.129"></a>
+<span class="sourceLineNo">130</span>      this.zkperms.start();<a name="line.130"></a>
+<span class="sourceLineNo">131</span>    } catch (KeeperException ke) {<a name="line.131"></a>
+<span class="sourceLineNo">132</span>      LOG.error("ZooKeeper initialization failed", ke);<a name="line.132"></a>
+<span class="sourceLineNo">133</span>    }<a name="line.133"></a>
+<span class="sourceLineNo">134</span>  }<a name="line.134"></a>
+<span class="sourceLineNo">135</span><a name="line.135"></a>
+<span class="sourceLineNo">136</span>  @Override<a name="line.136"></a>
+<span class="sourceLineNo">137</span>  public void close() {<a name="line.137"></a>
+<span class="sourceLineNo">138</span>    this.zkperms.close();<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>  /**<a name="line.141"></a>
+<span class="sourceLineNo">142</span>   * Initialize with global permission assignments<a name="line.142"></a>
+<span class="sourceLineNo">143</span>   * from the {@code hbase.superuser} configuration key.<a name="line.143"></a>
+<span class="sourceLineNo">144</span>   */<a name="line.144"></a>
+<span class="sourceLineNo">145</span>  private Map&lt;String, GlobalPermission&gt; initGlobal(Configuration conf) throws IOException {<a name="line.145"></a>
+<span class="sourceLineNo">146</span>    UserProvider userProvider = UserProvider.instantiate(conf);<a name="line.146"></a>
+<span class="sourceLineNo">147</span>    User user = userProvider.getCurrent();<a name="line.147"></a>
+<span class="sourceLineNo">148</span>    if (user == null) {<a name="line.148"></a>
+<span class="sourceLineNo">149</span>      throw new IOException("Unable to obtain the current user, " +<a name="line.149"></a>
+<span class="sourceLineNo">150</span>        "authorization checks for internal operations will not work correctly!");<a name="line.150"></a>
+<span class="sourceLineNo">151</span>    }<a name="line.151"></a>
+<span class="sourceLineNo">152</span>    String currentUser = user.getShortName();<a name="line.152"></a>
+<span class="sourceLineNo">153</span><a name="line.153"></a>
+<span class="sourceLineNo">154</span>    Map&lt;String, GlobalPermission&gt; global = new HashMap&lt;&gt;();<a name="line.154"></a>
+<span class="sourceLineNo">155</span>    // the system user is always included<a name="line.155"></a>
+<span class="sourceLineNo">156</span>    List&lt;String&gt; superusers = Lists.asList(currentUser, conf.getStrings(<a name="line.156"></a>
+<span class="sourceLineNo">157</span>        Superusers.SUPERUSER_CONF_KEY, new String[0]));<a name="line.157"></a>
+<span class="sourceLineNo">158</span>    for (String name : superusers) {<a name="line.158"></a>
+<span class="sourceLineNo">159</span>      GlobalPermission globalPermission = new GlobalPermission(Permission.Action.values());<a name="line.159"></a>
+<span class="sourceLineNo">160</span>      global.put(name, globalPermission);<a name="line.160"></a>
+<span class="sourceLineNo">161</span>    }<a name="line.161"></a>
+<span class="sourceLineNo">162</span>    return global;<a name="line.162"></a>
+<span class="sourceLineNo">163</span>  }<a name="line.163"></a>
+<span class="sourceLineNo">164</span><a name="line.164"></a>
+<span class="sourceLineNo">165</span>  public ZKPermissionWatcher getZKPermissionWatcher() {<a name="line.165"></a>
+<span class="sourceLineNo">166</span>    return this.zkperms;<a name="line.166"></a>
+<span class="sourceLineNo">167</span>  }<a name="line.167"></a>
+<span class="sourceLineNo">168</span><a name="line.168"></a>
+<span class="sourceLineNo">169</span>  /**<a name="line.169"></a>
+<span class="sourceLineNo">170</span>   * Update acl info for table.<a name="line.170"></a>
+<span class="sourceLineNo">171</span>   * @param table name of table<a name="line.171"></a>
+<span class="sourceLineNo">172</span>   * @param data updated acl data<a name="line.172"></a>
+<span class="sourceLineNo">173</span>   * @throws IOException exception when deserialize data<a name="line.173"></a>
+<span class="sourceLineNo">174</span>   */<a name="line.174"></a>
+<span class="sourceLineNo">175</span>  public void refreshTableCacheFromWritable(TableName table, byte[] data) throws IOException {<a name="line.175"></a>
+<span class="sourceLineNo">176</span>    if (data != null &amp;&amp; data.length &gt; 0) {<a name="line.176"></a>
+<span class="sourceLineNo">177</span>      try {<a name="line.177"></a>
+<span class="sourceLineNo">178</span>        ListMultimap&lt;String, Permission&gt; perms =<a name="line.178"></a>
+<span class="sourceLineNo">179</span>          AccessControlLists.readPermissions(data, conf);<a name="line.179"></a>
+<span class="sourceLineNo">180</span>        if (perms != null) {<a name="line.180"></a>
+<span class="sourceLineNo">181</span>          if (Bytes.equals(table.getName(), AccessControlLists.ACL_GLOBAL_NAME)) {<a name="line.181"></a>
+<span class="sourceLineNo">182</span>            updateGlobalCache(perms);<a name="line.182"></a>
+<span class="sourceLineNo">183</span>          } else {<a name="line.183"></a>
+<span class="sourceLineNo">184</span>            updateTableCache(table, perms);<a name="line.184"></a>
+<span class="sourceLineNo">185</span>          }<a name="line.185"></a>
+<span class="sourceLineNo">186</span>        }<a name="line.186"></a>
+<span class="sourceLineNo">187</span>      } catch (DeserializationException e) {<a name="line.187"></a>
+<span class="sourceLineNo">188</span>        throw new IOException(e);<a name="line.188"></a>
+<span class="sourceLineNo">189</span>      }<a name="line.189"></a>
+<span class="sourceLineNo">190</span>    } else {<a name="line.190"></a>
+<span class="sourceLineNo">191</span>      LOG.info("Skipping permission cache refresh because writable data is empty");<a name="line.191"></a>
+<span class="sourceLineNo">192</span>    }<a name="line.192"></a>
+<span class="sourceLineNo">193</span>  }<a name="line.193"></a>
+<span class="sourceLineNo">194</span><a name="line.194"></a>
+<span class="sourceLineNo">195</span>  /**<a name="line.195"></a>
+<span class="sourceLineNo">196</span>   * Update acl info for namespace.<a name="line.196"></a>
+<span class="sourceLineNo">197</span>   * @param namespace namespace<a name="line.197"></a>
+<span class="sourceLineNo">198</span>   * @param data updated acl data<a name="line.198"></a>
+<span class="sourceLineNo">199</span>   * @throws IOException exception when deserialize data<a name="line.199"></a>
+<span class="sourceLineNo">200</span>   */<a name="line.200"></a>
+<span class="sourceLineNo">201</span>  public void refreshNamespaceCacheFromWritable(String namespace, byte[] data) throws IOException {<a name="line.201"></a>
+<span class="sourceLineNo">202</span>    if (data != null &amp;&amp; data.length &gt; 0) {<a name="line.202"></a>
+<span class="sourceLineNo">203</span>      try {<a name="line.203"></a>
+<span class="sourceLineNo">204</span>        ListMultimap&lt;String, Permission&gt; perms =<a name="line.204"></a>
+<span class="sourceLineNo">205</span>          AccessControlLists.readPermissions(data, conf);<a name="line.205"></a>
+<span class="sourceLineNo">206</span>        if (perms != null) {<a name="line.206"></a>
+<span class="sourceLineNo">207</span>          updateNamespaceCache(namespace, perms);<a name="line.207"></a>
+<span class="sourceLineNo">208</span>        }<a name="line.208"></a>
+<span class="sourceLineNo">209</span>      } catch (DeserializationException e) {<a name="line.209"></a>
+<span class="sourceLineNo">210</span>        throw new IOException(e);<a name="line.210"></a>
+<span class="sourceLineNo">211</span>      }<a name="line.211"></a>
+<span class="sourceLineNo">212</span>    } else {<a name="line.212"></a>
+<span class="sourceLineNo">213</span>      LOG.debug("Skipping permission cache refresh because writable data is empty");<a name="line.213"></a>
+<span class="sourceLineNo">214</span>    }<a name="line.214"></a>
+<span class="sourceLineNo">215</span>  }<a name="line.215"></a>
+<span class="sourceLineNo">216</span><a name="line.216"></a>
+<span class="sourceLineNo">217</span>  /**<a name="line.217"></a>
+<span class="sourceLineNo">218</span>   * Updates the internal global permissions cache.<a name="line.218"></a>
+<span class="sourceLineNo">219</span>   * @param globalPerms new global permissions<a name="line.219"></a>
+<span class="sourceLineNo">220</span>   */<a name="line.220"></a>
+<span class="sourceLineNo">221</span>  private void updateGlobalCache(ListMultimap&lt;String, Permission&gt; globalPerms) {<a name="line.221"></a>
+<span class="sourceLineNo">222</span>    try {<a name="line.222"></a>
+<span class="sourceLineNo">223</span>      Map&lt;String, GlobalPermission&gt; global = initGlobal(conf);<a name="line.223"></a>
+<span class="sourceLineNo">224</span>      for (String name : globalPerms.keySet()) {<a name="line.224"></a>
+<span class="sourceLineNo">225</span>        for (Permission permission : globalPerms.get(name)) {<a name="line.225"></a>
+<span class="sourceLineNo">226</span>          global.put(name, (GlobalPermission) permission);<a name="line.226"></a>
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+<span class="sourceLineNo">471</span>      TBL_NO_PERMISSION);<a name="line.471"></a>
+<span class="sourceLineNo">472</span>    if (authorizeFamily(tblPermissions.get(user.getShortName()), table, family, action)) {<a name="line.472"></a>
+<span class="sourceLineNo">473</span>      return true;<a name="line.473"></a>
+<span class="sourceLineNo">474</span>    }<a name="line.474"></a>
+<span class="sourceLineNo">475</span>    for (String group : user.getGroupNames()) {<a name="line.475"></a>
+<span class="sourceLineNo">476</span>      if (authorizeFamily(tblPermissions.get(AuthUtil.toGroupEntry(group)),<a name="line.476"></a>
+<span class="sourceLineNo">477</span>          table, family, action)) {<a name="line.477"></a>
+<span class="sourceLineNo">478</span>        return true;<a name="line.478"></a>
+<span class="sourceLineNo">479</span>      }<a name="line.479"></a>
+<span class="sourceLineNo">480</span>    }<a name="line.480"></a>
+<span class="sourceLineNo">481</span>    return false;<a name="line.481"></a>
+<span class="sourceLineNo">482</span>  }<a name="line.482"></a>
+<span class="sourceLineNo">483</span><a name="line.483"></a>
+<span class="sourceLineNo">484</span>  private boolean authorizeFamily(Set&lt;TablePermission&gt; permissions,<a name="line.484"></a>
+<span class="sourceLineNo">485</span>      TableName table, byte[] family, Permission.Action action) {<a name="line.485"></a>
+<span class="sourceLineNo">486</span>    if (permissions == null) {<a name="line.486"></a>
+<span class="sourceLineNo">487</span>      return false;<a name="line.487"></a>
+<span class="sourceLineNo">488</span>    }<a name="line.488"></a>
+<span class="sourceLineNo">489</span>    for (TablePermission permission : permissions) {<a name="line.489"></a>
+<span class="sourceLineNo">490</span>      if (permission.implies(table, family, action)) {<a name="line.490"></a>
+<span class="sourceLineNo">491</span>        return true;<a name="line.491"></a>
+<span class="sourceLineNo">492</span>      }<a name="line.492"></a>
+<span class="sourceLineNo">493</span>    }<a name="line.493"></a>
+<span class="sourceLineNo">494</span>    return false;<a name="line.494"></a>
+<span class="sourceLineNo">495</span>  }<a name="line.495"></a>
+<span class="sourceLineNo">496</span><a name="line.496"></a>
+<span class="sourceLineNo">497</span>  /**<a name="line.497"></a>
+<span class="sourceLineNo">498</span>   * Check if user has given action privilige in cell scope.<a name="line.498"></a>
+<span class="sourceLineNo">499</span>   * @param user user name<a name="line.499"></a>
+<span class="sourceLineNo">500</span>   * @param table table name<a name="line.500"></a>
+<span class="sourceLineNo">501</span>   * @param cell cell to be checked<a name="line.501"></a>
+<span class="sourceLineNo">502</span>   * @param action one of action in [Read, Write, Create, Exec, Admin]<a name="line.502"></a>
+<span class="sourceLineNo">503</span>   * @return true if user has, false otherwise<a name="line.503"></a>
+<span class="sourceLineNo">504</span>   */<a name="line.504"></a>
+<span class="sourceLineNo">505</span>  public boolean authorizeCell(User user, TableName table, Cell cell, Permission.Action action) {<a name="line.505"></a>
+<span class="sourceLineNo">506</span>    try {<a name="line.506"></a>
+<span class="sourceLineNo">507</span>      List&lt;Permission&gt; perms = AccessControlLists.getCellPermissionsForUser(user, cell);<a name="line.507"></a>
+<span class="sourceLineNo">508</span>      if (LOG.isTraceEnabled()) {<a name="line.508"></a>
+<span class="sourceLineNo">509</span>        LOG.trace("Perms for user " + user.getShortName() + " in cell " + cell + ": " +<a name="line.509"></a>
+<span class="sourceLineNo">510</span>          (perms != null ? perms : ""));<a name="line.510"></a>
+<span class="sourceLineNo">511</span>      }<a name="line.511"></a>
+<span class="sourceLineNo">512</span>      if (perms != null) {<a name="line.512"></a>
+<span class="sourceLineNo">513</span>        for (Permission p: perms) {<a name="line.513"></a>
+<span class="sourceLineNo">514</span>          if (p.implies(action)) {<a name="line.514"></a>
+<span class="sourceLineNo">515</span>            return true;<a name="line.515"></a>
+<span class="sourceLineNo">516</span>          }<a name="line.516"></a>
+<span class="sourceLineNo">517</span>        }<a name="line.517"></a>
+<span class="sourceLineNo">518</span>      }<a name="line.518"></a>
+<span class="sourceLineNo">519</span>    } catch (IOException e) {<a name="line.519"></a>
+<span class="sourceLineNo">520</span>      // We failed to parse the KV tag<a name="line.520"></a>
+<span class="sourceLineNo">521</span>      LOG.error("Failed parse of ACL tag in cell " + cell);<a name="line.521"></a>
+<span class="sourceLineNo">522</span>      // Fall through to check with the table and CF perms we were able<a name="line.522"></a>
+<span class="sourceLineNo">523</span>      // to collect regardless<a name="line.523"></a>
+<span class="sourceLineNo">524</span>    }<a name="line.524"></a>
+<span class="sourceLineNo">525</span>    return false;<a name="line.525"></a>
+<span class="sourceLineNo">526</span>  }<a name="line.526"></a>
+<span class="sourceLineNo">527</span><a name="line.527"></a>
+<span class="sourceLineNo">528</span>  /**<a name="line.528"></a>
+<span class="sourceLineNo">529</span>   * Remove given namespace from AuthManager's namespace cache.<a name="line.529"></a>
+<span class="sourceLineNo">530</span>   * @param ns namespace<a name="line.530"></a>
+<span class="sourceLineNo">531</span>   */<a name="line.531"></a>
+<span class="sourceLineNo">532</span>  public void removeNamespace(byte[] ns) {<a name="line.532"></a>
+<span class="sourceLineNo">533</span>    namespaceCache.remove(Bytes.toString(ns));<a name="line.533"></a>
+<span class="sourceLineNo">534</span>  }<a name="line.534"></a>
+<span class="sourceLineNo">535</span><a name="line.535"></a>
+<span class="sourceLineNo">536</span>  /**<a name="line.536"></a>
+<span class="sourceLineNo">537</span>   * Remove given table from AuthManager's table cache.<a name="line.537"></a>
+<span class="sourceLineNo">538</span>   * @param table table name<a name="line.538"></a>
+<span class="sourceLineNo">539</span>   */<a name="line.539"></a>
+<span class="sourceLineNo">540</span>  public void removeTable(TableName table) {<a name="line.540"></a>
+<span class="sourceLineNo">541</span>    tableCache.remove(table);<a name="line.541"></a>
+<span class="sourceLineNo">542</span>  }<a name="line.542"></a>
+<span class="sourceLineNo">543</span><a name="line.543"></a>
+<span class="sourceLineNo">544</span>  /**<a name="line.544"></a>
+<span class="sourceLineNo">545</span>   * Last modification logical time<a name="line.545"></a>
+<span class="sourceLineNo">546</span>   * @return time<a name="line.546"></a>
+<span class="sourceLineNo">547</span>   */<a name="line.547"></a>
+<span class="sourceLineNo">548</span>  public long getMTime() {<a name="line.548"></a>
+<span class="sourceLineNo">549</span>    return mtime.get();<a name="line.549"></a>
+<span class="sourceLineNo">550</span>  }<a name="line.550"></a>
+<span class="sourceLineNo">551</span><a name="line.551"></a>
+<span class="sourceLineNo">552</span>  private static Map&lt;ZKWatcher, AuthManager&gt; managerMap = new HashMap&lt;&gt;();<a name="line.552"></a>
+<span class="sourceLineNo">553</span><a name="line.553"></a>
+<span class="sourceLineNo">554</span>  private static Map&lt;AuthManager, Integer&gt; refCount = new HashMap&lt;&gt;();<a name="line.554"></a>
+<span class="sourceLineNo">555</span><a name="line.555"></a>
+<span class="sourceLineNo">556</span>  /**<a name="line.556"></a>
+<span class="sourceLineNo">557</span>   * Returns a AuthManager from the cache. If not cached, constructs a new one.<a name="line.557"></a>
+<span class="sourceLineNo">558</span>   * Returned instance should be released back by calling {@link #release(AuthManager)}.<a name="line.558"></a>
+<span class="sourceLineNo">559</span>   * @param watcher zk watcher<a name="line.559"></a>
+<span class="sourceLineNo">560</span>   * @param conf configuration<a name="line.560"></a>
+<span class="sourceLineNo">561</span>   * @return an AuthManager<a name="line.561"></a>
+<span class="sourceLineNo">562</span>   * @throws IOException zookeeper initialization failed<a name="line.562"></a>
+<span class="sourceLineNo">563</span>   */<a name="line.563"></a>
+<span class="sourceLineNo">564</span>  public synchronized static AuthManager getOrCreate(<a name="line.564"></a>
+<span class="sourceLineNo">565</span>      ZKWatcher watcher, Configuration conf) throws IOException {<a name="line.565"></a>
+<span class="sourceLineNo">566</span>    AuthManager instance = managerMap.get(watcher);<a name="line.566"></a>
+<span class="sourceLineNo">567</span>    if (instance == null) {<a name="line.567"></a>
+<span class="sourceLineNo">568</span>      instance = new AuthManager(watcher, conf);<a name="line.568"></a>
+<span class="sourceLineNo">569</span>      managerMap.put(watcher, instance);<a name="line.569"></a>
+<span class="sourceLineNo">570</span>    }<a name="line.570"></a>
+<span class="sourceLineNo">571</span>    int ref = refCount.get(instance) == null ? 0 : refCount.get(instance);<a name="line.571"></a>
+<span class="sourceLineNo">572</span>    refCount.put(instance, ref + 1);<a name="line.572"></a>
+<span class="sourceLineNo">573</span>    return instance;<a name="line.573"></a>
+<span class="sourceLineNo">574</span>  }<a name="line.574"></a>
+<span class="sourceLineNo">575</span><a name="line.575"></a>
+<span class="sourceLineNo">576</span>  @VisibleForTesting<a name="line.576"></a>
+<span class="sourceLineNo">577</span>  public static int getTotalRefCount() {<a name="line.577"></a>
+<span class="sourceLineNo">578</span>    int total = 0;<a name="line.578"></a>
+<span class="sourceLineNo">579</span>    for (int count : refCount.values()) {<a name="line.579"></a>
+<span class="sourceLineNo">580</span>      total += count;<a name="line.580"></a>
+<span class="sourceLineNo">581</span>    }<a name="line.581"></a>
+<span class="sourceLineNo">582</span>    return total;<a name="line.582"></a>
+<span class="sourceLineNo">583</span>  }<a name="line.583"></a>
+<span class="sourceLineNo">584</span><a name="line.584"></a>
+<span class="sourceLineNo">585</span>  /**<a name="line.585"></a>
+<span class="sourceLineNo">586</span>   * Releases the resources for the given AuthManager if the reference count is down to 0.<a name="line.586"></a>
+<span class="sourceLineNo">587</span>   * @param instance AuthManager to be released<a name="line.587"></a>
+<span class="sourceLineNo">588</span>   */<a name="line.588"></a>
+<span class="sourceLineNo">589</span>  public synchronized static void release(AuthManager instance) {<a name="line.589"></a>
+<span class="sourceLineNo">590</span>    if (refCount.get(instance) == null || refCount.get(instance) &lt; 1) {<a name="line.590"></a>
+<span class="sourceLineNo">591</span>      String msg = "Something wrong with the AuthManager reference counting: " + instance<a name="line.591"></a>
+<span class="sourceLineNo">592</span>          + " whose count is " + refCount.get(instance);<a name="line.592"></a>
+<span class="sourceLineNo">593</span>      LOG.error(HBaseMarkers.FATAL, msg);<a name="line.593"></a>
+<span class="sourceLineNo">594</span>      instance.close();<a name="line.594"></a>
+<span class="sourceLineNo">595</span>      managerMap.remove(instance.getZKPermissionWatcher().getWatcher());<a name="line.595"></a>
+<span class="sourceLineNo">596</span>      instance.getZKPermissionWatcher().getWatcher().abort(msg, null);<a name="line.596"></a>
+<span class="sourceLineNo">597</span>    } else {<a name="line.597"></a>
+<span class="sourceLineNo">598</span>      int ref = refCount.get(instance);<a name="line.598"></a>
+<span class="sourceLineNo">599</span>      --ref;<a name="line.599"></a>
+<span class="sourceLineNo">600</span>      refCount.put(instance, ref);<a name="line.600"></a>
+<span class="sourceLineNo">601</span>      if (ref == 0) {<a name="line.601"></a>
+<span class="sourceLineNo">602</span>        instance.close();<a name="line.602"></a>
+<span class="sourceLineNo">603</span>        managerMap.remove(instance.getZKPermissionWatcher().getWatcher());<a name="line.603"></a>
+<span class="sourceLineNo">604</span>        refCount.remove(instance);<a name="line.604"></a>
+<span class="sourceLineNo">605</span>      }<a name="line.605"></a>
+<span class="sourceLineNo">606</span>    }<a name="line.606"></a>
+<span class="sourceLineNo">607</span>  }<a name="line.607"></a>
+<span class="sourceLineNo">608</span>}<a name="line.608"></a>
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+</pre>
+</div>
+</body>
+</html>


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