content/docs/r3.3.1/api/org/apache/hadoop/registry/client/api/RegistryOperations.html - hadoop-site - Git at Google

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 <div class="subTitle">org.apache.hadoop.registry.client.api</div>
 <h2 title="Interface RegistryOperations" class="title">Interface RegistryOperations</h2>
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 </dl>
 <dl>
 <dt>All Known Implementing Classes:</dt>
 <dd><a href="../../../../../../org/apache/hadoop/registry/client/impl/RegistryOperationsClient.html" title="class in org.apache.hadoop.registry.client.impl">RegistryOperationsClient</a>, <a href="../../../../../../org/apache/hadoop/registry/client/impl/zk/RegistryOperationsService.html" title="class in org.apache.hadoop.registry.client.impl.zk">RegistryOperationsService</a></dd>
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 <pre>@InterfaceAudience.Public
  @InterfaceStability.Evolving
 public interface <span class="typeNameLabel">RegistryOperations</span>
 extends <a href="../../../../../../org/apache/hadoop/service/Service.html" title="interface in org.apache.hadoop.service">Service</a></pre>
 <div class="block">Registry Operations</div>
 </li>
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 <h3>Method Summary</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
 <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Method and Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#addWriteAccessor-java.lang.String-java.lang.String-">addWriteAccessor</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;id,
                 <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;pass)</code>
 <div class="block">Add a new write access entry to be added to node permissions in all
  future write operations of a session connected to a secure registry.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#bind-java.lang.String-org.apache.hadoop.registry.client.types.ServiceRecord-int-">bind</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;path,
     <a href="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types">ServiceRecord</a>&nbsp;record,
     int&nbsp;flags)</code>
 <div class="block">Bind a path in the registry to a service record</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#clearWriteAccessors--">clearWriteAccessors</a></span>()</code>
 <div class="block">Clear all write accessors.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code>void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#delete-java.lang.String-boolean-">delete</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;path,
       boolean&nbsp;recursive)</code>
 <div class="block">Delete a path.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#exists-java.lang.String-">exists</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;path)</code>
 <div class="block">Probe for a path existing.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#list-java.lang.String-">list</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;path)</code>
 <div class="block">List all entries under a registry path, returning the relative names
  of the entries.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#mknode-java.lang.String-boolean-">mknode</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;path,
       boolean&nbsp;createParents)</code>
 <div class="block">Create a path.</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types">ServiceRecord</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#resolve-java.lang.String-">resolve</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;path)</code>
 <div class="block">Resolve the record at a path</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types">RegistryPathStatus</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#stat-java.lang.String-">stat</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;path)</code>
 <div class="block">Get the status of a path</div>
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 <h3>Methods inherited from interface&nbsp;org.apache.hadoop.service.<a href="../../../../../../org/apache/hadoop/service/Service.html" title="interface in org.apache.hadoop.service">Service</a></h3>
 <code><a href="../../../../../../org/apache/hadoop/service/Service.html#close--">close</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#getBlockers--">getBlockers</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#getConfig--">getConfig</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#getFailureCause--">getFailureCause</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#getFailureState--">getFailureState</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#getLifecycleHistory--">getLifecycleHistory</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#getName--">getName</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#getServiceState--">getServiceState</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#getStartTime--">getStartTime</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#init-org.apache.hadoop.conf.Configuration-">init</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#isInState-org.apache.hadoop.service.Service.STATE-">isInState</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#registerServiceListener-org.apache.hadoop.service.ServiceStateChangeListener-">registerServiceListener</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#start--">start</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#stop--">stop</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#unregisterServiceListener-org.apache.hadoop.service.ServiceStateChangeListener-">unregisterServiceListener</a>, <a href="../../../../../../org/apache/hadoop/service/Service.html#waitForServiceToStop-long-">waitForServiceToStop</a></code></li>
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 <h4>mknode</h4>
 <pre>boolean&nbsp;mknode(<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;path,
                boolean&nbsp;createParents)
         throws org.apache.hadoop.fs.PathNotFoundException,
                <a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a>,
                <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">Create a path.

  It is not an error if the path exists already, be it empty or not.

  The createParents flag also requests creating the parents.
  As entries in the registry can hold data while still having
  child entries, it is not an error if any of the parent path
  elements have service records.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>path</code> - path to create</dd>
 <dd><code>createParents</code> - also create the parents.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if the path was created, false if it existed.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.fs.PathNotFoundException</code> - parent path is not in the registry.</dd>
 <dd><code><a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a></code> - path name is invalid.</dd>
 <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> - Any other IO Exception.</dd>
 </dl>
 </li>
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 <!--   -->
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 <h4>bind</h4>
 <pre>void&nbsp;bind(<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;path,
           <a href="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types">ServiceRecord</a>&nbsp;record,
           int&nbsp;flags)
    throws org.apache.hadoop.fs.PathNotFoundException,
           <a href="../../../../../../org/apache/hadoop/fs/FileAlreadyExistsException.html" title="class in org.apache.hadoop.fs">FileAlreadyExistsException</a>,
           <a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a>,
           <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">Bind a path in the registry to a service record</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>path</code> - path to service record</dd>
 <dd><code>record</code> - service record service record to create/update</dd>
 <dd><code>flags</code> - bind flags</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.fs.PathNotFoundException</code> - the parent path does not exist</dd>
 <dd><code><a href="../../../../../../org/apache/hadoop/fs/FileAlreadyExistsException.html" title="class in org.apache.hadoop.fs">FileAlreadyExistsException</a></code> - path exists but create flags
  do not include "overwrite"</dd>
 <dd><code><a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a></code> - path name is invalid.</dd>
 <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> - Any other IO Exception.</dd>
 </dl>
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 <h4>resolve</h4>
 <pre><a href="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types">ServiceRecord</a>&nbsp;resolve(<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;path)
                throws org.apache.hadoop.fs.PathNotFoundException,
                       <a href="../../../../../../org/apache/hadoop/registry/client/exceptions/NoRecordException.html" title="class in org.apache.hadoop.registry.client.exceptions">NoRecordException</a>,
                       <a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidRecordException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidRecordException</a>,
                       <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">Resolve the record at a path</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>path</code> - path to an entry containing a <a href="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types"><code>ServiceRecord</code></a></dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the record</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.fs.PathNotFoundException</code> - path is not in the registry.</dd>
 <dd><code><a href="../../../../../../org/apache/hadoop/registry/client/exceptions/NoRecordException.html" title="class in org.apache.hadoop.registry.client.exceptions">NoRecordException</a></code> - if there is not a service record</dd>
 <dd><code><a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidRecordException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidRecordException</a></code> - if there was a service record but it could
  not be parsed.</dd>
 <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> - Any other IO Exception</dd>
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 <h4>stat</h4>
 <pre><a href="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types">RegistryPathStatus</a>&nbsp;stat(<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;path)
                  throws org.apache.hadoop.fs.PathNotFoundException,
                         <a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a>,
                         <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">Get the status of a path</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>path</code> - path to query</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the status of the path</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.fs.PathNotFoundException</code> - path is not in the registry.</dd>
 <dd><code><a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a></code> - the path is invalid.</dd>
 <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> - Any other IO Exception</dd>
 </dl>
 </li>
 </ul>
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 <h4>exists</h4>
 <pre>boolean&nbsp;exists(<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;path)
         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">Probe for a path existing.
  This is equivalent to <a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#stat-java.lang.String-"><code>stat(String)</code></a> with
  any failure downgraded to a</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>path</code> - path to query</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if the path was 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></dd>
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 <h4>list</h4>
 <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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>&gt;&nbsp;list(<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;path)
            throws org.apache.hadoop.fs.PathNotFoundException,
                   <a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a>,
                   <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">List all entries under a registry path, returning the relative names
  of the entries.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>path</code> - path to query</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>a possibly empty list of the short path names of
  child entries.</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.fs.PathNotFoundException</code></dd>
 <dd><code><a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a></code></dd>
 <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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 <pre>void&nbsp;delete(<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;path,
             boolean&nbsp;recursive)
      throws org.apache.hadoop.fs.PathNotFoundException,
             org.apache.hadoop.fs.PathIsNotEmptyDirectoryException,
             <a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a>,
             <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">Delete a path.

  If the operation returns without an error then the entry has been
  deleted.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>path</code> - path delete recursively</dd>
 <dd><code>recursive</code> - recursive flag</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code>org.apache.hadoop.fs.PathNotFoundException</code> - path is not in the registry.</dd>
 <dd><code><a href="../../../../../../org/apache/hadoop/registry/client/exceptions/InvalidPathnameException.html" title="class in org.apache.hadoop.registry.client.exceptions">InvalidPathnameException</a></code> - the path is invalid.</dd>
 <dd><code>org.apache.hadoop.fs.PathIsNotEmptyDirectoryException</code> - path has child entries, but
  recursive is false.</dd>
 <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> - Any other IO Exception</dd>
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 <pre>boolean&nbsp;addWriteAccessor(<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;id,
                          <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;pass)
                   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">Add a new write access entry to be added to node permissions in all
  future write operations of a session connected to a secure registry.

  This does not grant the session any more rights: if it lacked any write
  access, it will still be unable to manipulate the registry.

  In an insecure cluster, this operation has no effect.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>id</code> - ID to use</dd>
 <dd><code>pass</code> - password</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>true if the accessor was added: that is, the registry connection
  uses permissions to manage access</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> - on any failure to build the digest</dd>
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 <h4>clearWriteAccessors</h4>
 <pre>void&nbsp;clearWriteAccessors()</pre>
 <div class="block">Clear all write accessors.

  At this point all standard permissions/ACLs are retained,
  including any set on behalf of the user
  Only  accessors added via <a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html#addWriteAccessor-java.lang.String-java.lang.String-"><code>addWriteAccessor(String, String)</code></a>
  are removed.</div>
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