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<div class="subTitle">org.apache.hadoop.security</div>
<h2 title="Class ProviderUtils" class="title">Class ProviderUtils</h2>
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<pre>public final class <span class="typeNameLabel">ProviderUtils</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>
<div class="block">Utility methods for both key and credential provider APIs.</div>
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<tr class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#NO_PASSWORD_CONT">NO_PASSWORD_CONT</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#NO_PASSWORD_ERROR">NO_PASSWORD_ERROR</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#NO_PASSWORD_INSTRUCTIONS_DOC">NO_PASSWORD_INSTRUCTIONS_DOC</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#NO_PASSWORD_WARN">NO_PASSWORD_WARN</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#excludeIncompatibleCredentialProviders-org.apache.hadoop.conf.Configuration-java.lang.Class-">excludeIncompatibleCredentialProviders</a></span>(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;config,
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<div class="block">There are certain integrations of the credential provider API in
which a recursive dependency between the provider and the hadoop
filesystem abstraction causes a problem.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static char[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#locatePassword-java.lang.String-java.lang.String-">locatePassword</a></span>(<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;envWithPass,
<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;fileWithPass)</code>
<div class="block">The password is either found in the environment or in a file.</div>
</td>
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<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/net/URI.html?is-external=true" title="class or interface in java.net">URI</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#nestURIForLocalJavaKeyStoreProvider-java.net.URI-">nestURIForLocalJavaKeyStoreProvider</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/net/URI.html?is-external=true" title="class or interface in java.net">URI</a>&nbsp;localFile)</code>
<div class="block">Mangle given local java keystore file URI to allow use as a
LocalJavaKeyStoreProvider.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#noPasswordError-java.lang.String-java.lang.String-">noPasswordError</a></span>(<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;envKey,
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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;fileKey)</code>&nbsp;</td>
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<td class="colFirst"><code>static <a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/security/ProviderUtils.html#unnestUri-java.net.URI-">unnestUri</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/net/URI.html?is-external=true" title="class or interface in java.net">URI</a>&nbsp;nestedUri)</code>
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<pre>public static final&nbsp;<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> NO_PASSWORD_WARN</pre>
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<pre>public static final&nbsp;<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> NO_PASSWORD_ERROR</pre>
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<pre>public static final&nbsp;<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> NO_PASSWORD_CONT</pre>
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<pre>public static final&nbsp;<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> NO_PASSWORD_INSTRUCTIONS_DOC</pre>
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<h4>unnestUri</h4>
<pre>public static&nbsp;<a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a>&nbsp;unnestUri(<a href="https://docs.oracle.com/javase/8/docs/api/java/net/URI.html?is-external=true" title="class or interface in java.net">URI</a>&nbsp;nestedUri)</pre>
<div class="block">Convert a nested URI to decode the underlying path. The translation takes
the authority and parses it into the underlying scheme and authority.
For example, "myscheme://hdfs@nn/my/path" is converted to
"hdfs://nn/my/path".</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>nestedUri</code> - the URI from the nested URI</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the unnested path</dd>
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<h4>nestURIForLocalJavaKeyStoreProvider</h4>
<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/net/URI.html?is-external=true" title="class or interface in java.net">URI</a>&nbsp;nestURIForLocalJavaKeyStoreProvider(<a href="https://docs.oracle.com/javase/8/docs/api/java/net/URI.html?is-external=true" title="class or interface in java.net">URI</a>&nbsp;localFile)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/net/URISyntaxException.html?is-external=true" title="class or interface in java.net">URISyntaxException</a></pre>
<div class="block">Mangle given local java keystore file URI to allow use as a
LocalJavaKeyStoreProvider.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>localFile</code> - absolute URI with file scheme and no authority component.
i.e. return of File.toURI,
e.g. file:///home/larry/creds.jceks</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>URI of the form localjceks://file/home/larry/creds.jceks</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if localFile isn't not a file uri or if it
has an authority component.</dd>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/net/URISyntaxException.html?is-external=true" title="class or interface in java.net">URISyntaxException</a></code> - if the wrapping process violates RFC 2396</dd>
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<h4>excludeIncompatibleCredentialProviders</h4>
<pre>public static&nbsp;<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;excludeIncompatibleCredentialProviders(<a href="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;config,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</a>&gt;&nbsp;fileSystemClass)
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">There are certain integrations of the credential provider API in
which a recursive dependency between the provider and the hadoop
filesystem abstraction causes a problem. These integration points
need to leverage this utility method to remove problematic provider
types from the existing provider path within the configuration.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>config</code> - the existing configuration with provider path</dd>
<dd><code>fileSystemClass</code> - the class which providers must be compatible</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Configuration clone with new provider path</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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<h4>locatePassword</h4>
<pre>public static&nbsp;char[]&nbsp;locatePassword(<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;envWithPass,
<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;fileWithPass)
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">The password is either found in the environment or in a file. This
routine implements the logic for locating the password in these
locations.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>envWithPass</code> - The name of the environment variable that might
contain the password. Must not be null.</dd>
<dd><code>fileWithPass</code> - The name of a file that could contain the password.
Can be null.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The password as a char []; null if not found.</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> - If fileWithPass is non-null and points to a
nonexistent file or a file that fails to open and be read properly.</dd>
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<h4>noPasswordWarning</h4>
<pre>public static&nbsp;<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;noPasswordWarning(<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;envKey,
<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;fileKey)</pre>
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<h4>noPasswordError</h4>
<pre>public static&nbsp;<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;noPasswordError(<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;envKey,
<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;fileKey)</pre>
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