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 <h2 title="Class ClientAuthUtils" class="title">Class ClientAuthUtils</h2>
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 <pre>public class <span class="typeNameLabel">ClientAuthUtils</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
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 <div class="block">Check if worker tokens should be enabled on the server side or not.</div>
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                <a href="../../../../../org/apache/storm/generated/WorkerTokenServiceType.html" title="enum in org.apache.storm.generated">WorkerTokenServiceType</a>&nbsp;type)</code>
 <div class="block">Find a worker token in a given subject with a given token type.</div>
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 <div class="block">Pull a the value given section and key from Configuration.</div>
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 <div class="block">Construct a JAAS configuration object per storm configuration file.</div>
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 <div class="block">Get all of the configured Credential Renewer Plugins.</div>
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 <tr id="i11" class="rowColor">
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 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/security/auth/ClientAuthUtils.html#serializeWorkerTokenInfo-org.apache.storm.generated.WorkerTokenInfo-">serializeWorkerTokenInfo</a></span>(<a href="../../../../../org/apache/storm/generated/WorkerTokenInfo.html" title="class in org.apache.storm.generated">WorkerTokenInfo</a>&nbsp;wti)</code>
 <div class="block">Turn a WorkerTokenInfo in a byte array.</div>
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 <div class="block">Store a worker token in some credentials.</div>
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 <div class="block">Update a subject from credentials using the IAutoCredentials.</div>
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 <div class="block"><p>Construct a JAAS configuration object per storm configuration file.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>topoConf</code> - Storm configuration</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>JAAS configuration object</dd>
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                                                  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;section)
                                           throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Get configurations for a section.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>configuration</code> - The config to pull the key/value pairs out of.</dd>
 <dd><code>section</code> - The app configuration entry name to get stuff from.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Return array of config entries or null if configuration is null</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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                                              <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;section)
                                       throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Pull a set of keys out of a Configuration.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>topoConf</code> - The config containing the jaas conf file.</dd>
 <dd><code>section</code> - The app configuration entry name to get stuff from.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Return a map of the configs in conf.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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                          <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;section,
                          <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)
                   throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
 <div class="block"><p>Pull a the value given section and key from Configuration.</p></div>
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 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>topoConf</code> - The config containing the jaas conf file.</dd>
 <dd><code>section</code> - The app configuration entry name to get stuff from.</dd>
 <dd><code>key</code> - The key to look up inside of the section</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Return a the String value of the configuration value</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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 <div class="block"><p>Construct a principal to local plugin.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>topoConf</code> - storm configuration</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the plugin</dd>
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 <div class="block"><p>Construct a group mapping service provider plugin.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - daemon configuration</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
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 <div class="block"><p>Get all of the configured Credential Renewer Plugins.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - the storm configuration to use.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the configured credential renewers.</dd>
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 <div class="block"><p>Get all the Nimbus Auto cred plugins.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>conf</code> - nimbus configuration to use.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>nimbus auto credential plugins.</dd>
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 <div class="block"><p>Get all of the configured AutoCredential Plugins.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>topoConf</code> - the storm configuration to use.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the configured auto credentials.</dd>
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 <div class="block"><p>Get the key used to store a WorkerToken in the credentials map.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>type</code> - the type of service to get.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the key as a String.</dd>
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                                           <a href="../../../../../org/apache/storm/generated/WorkerTokenServiceType.html" title="enum in org.apache.storm.generated">WorkerTokenServiceType</a>&nbsp;type)</pre>
 <div class="block"><p>Read a WorkerToken out of credentials for the given type.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>credentials</code> - the credentials map.</dd>
 <dd><code>type</code> - the type of service we are looking for.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the deserialized WorkerToken or null if none could be found.</dd>
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                                   <a href="../../../../../org/apache/storm/generated/WorkerToken.html" title="class in org.apache.storm.generated">WorkerToken</a>&nbsp;token)</pre>
 <div class="block"><p>Store a worker token in some credentials. It can be pulled back out by calling readWorkerToken.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>credentials</code> - the credentials map.</dd>
 <dd><code>token</code> - the token you want to store.</dd>
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                                           <a href="../../../../../org/apache/storm/generated/WorkerTokenServiceType.html" title="enum in org.apache.storm.generated">WorkerTokenServiceType</a>&nbsp;type)</pre>
 <div class="block"><p>Find a worker token in a given subject with a given token type.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>subject</code> - what to look in.</dd>
 <dd><code>type</code> - the type of token to look for.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the token or null.</dd>
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                                                    <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;conf)</pre>
 <div class="block"><p>Check if worker tokens should be enabled on the server side or not.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>server</code> - a Thrift server to know if the transport support tokens or not. No need to create a token if the transport does not  support it.</dd>
 <dd><code>conf</code> - the daemon configuration to be sure the tokens are secure.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if we can enable them, else false.</dd>
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                                                    <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;conf)</pre>
 <div class="block"><p>Check if worker tokens should be enabled on the server side or not (for a given server).</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>connectionType</code> - the type of server this is for.</dd>
 <dd><code>conf</code> - the daemon configuration to be sure the tokens are secure.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if we can enable them, else false.</dd>
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 <div class="block"><p>Turn a WorkerTokenInfo in a byte array.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>wti</code> - what to serialize.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the resulting byte array.</dd>
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 <div class="block"><p>Get and deserialize the WorkerTokenInfo in the worker token.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>wt</code> - the token.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the deserialized info.</dd>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/javax/security/auth/Subject.html?is-external=true" title="class or interface in javax.security.auth">Subject</a>&nbsp;populateSubject(<a href="https://docs.oracle.com/javase/8/docs/api/javax/security/auth/Subject.html?is-external=true" title="class or interface in javax.security.auth">Subject</a>&nbsp;subject,
                                       <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../../org/apache/storm/security/auth/IAutoCredentials.html" title="interface in org.apache.storm.security.auth">IAutoCredentials</a>&gt;&nbsp;autos,
                                       <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;credentials)</pre>
 <div class="block"><p>Populate a subject from credentials using the IAutoCredentials.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>subject</code> - the subject to populate or null if a new Subject should be created.</dd>
 <dd><code>autos</code> - the IAutoCredentials to call to populate the subject.</dd>
 <dd><code>credentials</code> - the credentials to pull from</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the populated subject.</dd>
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 <pre>public static&nbsp;void&nbsp;updateSubject(<a href="https://docs.oracle.com/javase/8/docs/api/javax/security/auth/Subject.html?is-external=true" title="class or interface in javax.security.auth">Subject</a>&nbsp;subject,
                                  <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../../org/apache/storm/security/auth/IAutoCredentials.html" title="interface in org.apache.storm.security.auth">IAutoCredentials</a>&gt;&nbsp;autos,
                                  <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;credentials)</pre>
 <div class="block"><p>Update a subject from credentials using the IAutoCredentials.</p></div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>subject</code> - the subject to update</dd>
 <dd><code>autos</code> - the IAutoCredentials to call to update the subject.</dd>
 <dd><code>credentials</code> - the credentials to pull from</dd>
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 <pre>public static&nbsp;<a href="../../../../../org/apache/storm/security/auth/ITransportPlugin.html" title="interface in org.apache.storm.security.auth">ITransportPlugin</a>&nbsp;getTransportPlugin(<a href="../../../../../org/apache/storm/security/auth/ThriftConnectionType.html" title="enum in org.apache.storm.security.auth">ThriftConnectionType</a>&nbsp;type,
                                                   <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;topoConf)</pre>
 <div class="block"><p>Construct a transport plugin per storm configuration.</p></div>
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                                        <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;configSection)</pre>
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                                       throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre>
 <dl>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd>
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