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| <h2 title="Class RegistryUtils" class="title">Class RegistryUtils</h2> |
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| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Evolving |
| public class <span class="typeNameLabel">RegistryUtils</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 working with a registry.</div> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/registry/client/binding/RegistryUtils.html#RegistryUtils--">RegistryUtils</a></span>()</code> </td> |
| </tr> |
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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"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </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>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/registry/client/binding/RegistryUtils.html#componentListPath-java.lang.String-java.lang.String-java.lang.String-">componentListPath</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> user, |
| <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> serviceClass, |
| <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> serviceName)</code> |
| <div class="block">Create a path for listing components under a service</div> |
| </td> |
| </tr> |
| <tr id="i1" 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/registry/client/binding/RegistryUtils.html#componentPath-java.lang.String-java.lang.String-java.lang.String-java.lang.String-">componentPath</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> user, |
| <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> serviceClass, |
| <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> serviceName, |
| <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> componentName)</code> |
| <div class="block">Create the path to a service record for a component</div> |
| </td> |
| </tr> |
| <tr id="i2" 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/registry/client/binding/RegistryUtils.html#convertUsername-java.lang.String-">convertUsername</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> username)</code> |
| <div class="block">Convert the username to that which can be used for registry |
| entries.</div> |
| </td> |
| </tr> |
| <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/registry/client/binding/RegistryUtils.html#currentUser--">currentUser</a></span>()</code> |
| <div class="block">Get the current user path formatted for the registry</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static <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><<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="../../../../../../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/binding/RegistryUtils.html#extractServiceRecords-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-">extractServiceRecords</a></span>(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> operations, |
| <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> parentpath)</code> |
| <div class="block">Extract all service records under a list of stat operations...this |
| non-atomic action skips entries that are too short or simply not matching.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <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><<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="../../../../../../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/binding/RegistryUtils.html#extractServiceRecords-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-java.util.Collection-">extractServiceRecords</a></span>(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> operations, |
| <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> parentpath, |
| <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><<a href="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types">RegistryPathStatus</a>> stats)</code> |
| <div class="block">Extract all service records under a list of stat operations...this |
| skips entries that are too short or simply not matching</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <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><<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="../../../../../../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/binding/RegistryUtils.html#extractServiceRecords-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-java.util.Map-">extractServiceRecords</a></span>(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> operations, |
| <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> parentpath, |
| <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><<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="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types">RegistryPathStatus</a>> stats)</code> |
| <div class="block">Extract all service records under a list of stat operations...this |
| non-atomic action skips entries that are too short or simply not matching.</div> |
| </td> |
| </tr> |
| <tr id="i7" 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/registry/client/binding/RegistryUtils.html#getCurrentUsernameUnencoded-java.lang.String-">getCurrentUsernameUnencoded</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> env_hadoop_username)</code> |
| <div class="block">Get the current username, using the value of the parameter |
| <code>env_hadoop_username</code> if it is set on an insecure cluster.</div> |
| </td> |
| </tr> |
| <tr id="i8" 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/registry/client/binding/RegistryUtils.html#homePathForCurrentUser--">homePathForCurrentUser</a></span>()</code> |
| <div class="block">Get the home path of the current user.</div> |
| </td> |
| </tr> |
| <tr id="i9" 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/registry/client/binding/RegistryUtils.html#homePathForUser-java.lang.String-">homePathForUser</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> username)</code> |
| <div class="block">Buld the user path -switches to the system path if the user is "".</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static <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><<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="../../../../../../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/binding/RegistryUtils.html#listServiceRecords-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-">listServiceRecords</a></span>(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> registryOperations, |
| <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> path)</code> |
| <div class="block">List service records directly under a path</div> |
| </td> |
| </tr> |
| <tr id="i11" 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/registry/client/binding/RegistryUtils.html#registryUser-java.lang.String-">registryUser</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> shortUserName)</code> |
| <div class="block">Convert the given user name formatted for the registry.</div> |
| </td> |
| </tr> |
| <tr id="i12" 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/registry/client/binding/RegistryUtils.html#serviceclassPath-java.lang.String-java.lang.String-">serviceclassPath</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> user, |
| <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> serviceClass)</code> |
| <div class="block">Create a service classpath</div> |
| </td> |
| </tr> |
| <tr id="i13" 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/registry/client/binding/RegistryUtils.html#servicePath-java.lang.String-java.lang.String-java.lang.String-">servicePath</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> user, |
| <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> serviceClass, |
| <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> serviceName)</code> |
| <div class="block">Create a path to a service under a user and service class</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>static <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><<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="../../../../../../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/binding/RegistryUtils.html#statChildren-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-">statChildren</a></span>(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> registryOperations, |
| <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> path)</code> |
| <div class="block">List children of a directory and retrieve their |
| <a href="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types"><code>RegistryPathStatus</code></a> values.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.<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></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| </ul> |
| </li> |
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| <div class="details"> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <h3>Constructor Detail</h3> |
| <a name="RegistryUtils--"> |
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| <h4>RegistryUtils</h4> |
| <pre>public RegistryUtils()</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <li class="blockList"><a name="method.detail"> |
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| </a> |
| <h3>Method Detail</h3> |
| <a name="homePathForUser-java.lang.String-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>homePathForUser</h4> |
| <pre>public 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> homePathForUser(<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> username)</pre> |
| <div class="block">Buld the user path -switches to the system path if the user is "". |
| It also cross-converts the username to ascii via punycode</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>username</code> - username or ""</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the path to the user</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="convertUsername-java.lang.String-"> |
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| <ul class="blockList"> |
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| <h4>convertUsername</h4> |
| <pre>public 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> convertUsername(<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> username)</pre> |
| <div class="block">Convert the username to that which can be used for registry |
| entries. Lower cases it, |
| Strip the kerberos realm off a username if needed, and any "/" hostname |
| entries</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>username</code> - user</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the converted username</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="serviceclassPath-java.lang.String-java.lang.String-"> |
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| <h4>serviceclassPath</h4> |
| <pre>public 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> serviceclassPath(<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> user, |
| <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> serviceClass)</pre> |
| <div class="block">Create a service classpath</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>user</code> - username or ""</dd> |
| <dd><code>serviceClass</code> - service name</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a full path</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="servicePath-java.lang.String-java.lang.String-java.lang.String-"> |
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| <h4>servicePath</h4> |
| <pre>public 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> servicePath(<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> user, |
| <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> serviceClass, |
| <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> serviceName)</pre> |
| <div class="block">Create a path to a service under a user and service class</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>user</code> - username or ""</dd> |
| <dd><code>serviceClass</code> - service name</dd> |
| <dd><code>serviceName</code> - service name unique for that user and service class</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a full path</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="componentListPath-java.lang.String-java.lang.String-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>componentListPath</h4> |
| <pre>public 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> componentListPath(<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> user, |
| <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> serviceClass, |
| <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> serviceName)</pre> |
| <div class="block">Create a path for listing components under a service</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>user</code> - username or ""</dd> |
| <dd><code>serviceClass</code> - service name</dd> |
| <dd><code>serviceName</code> - service name unique for that user and service class</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a full path</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="componentPath-java.lang.String-java.lang.String-java.lang.String-java.lang.String-"> |
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| </a> |
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| <h4>componentPath</h4> |
| <pre>public 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> componentPath(<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> user, |
| <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> serviceClass, |
| <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> serviceName, |
| <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> componentName)</pre> |
| <div class="block">Create the path to a service record for a component</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>user</code> - username or ""</dd> |
| <dd><code>serviceClass</code> - service name</dd> |
| <dd><code>serviceName</code> - service name unique for that user and service class</dd> |
| <dd><code>componentName</code> - unique name/ID of the component</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a full path</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="listServiceRecords-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-"> |
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| <h4>listServiceRecords</h4> |
| <pre>public static <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><<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="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types">ServiceRecord</a>> listServiceRecords(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> registryOperations, |
| <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> 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">List service records directly under a path</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>registryOperations</code> - registry operations instance</dd> |
| <dd><code>path</code> - path to list</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a mapping of the service records that were resolved, indexed |
| by their full 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> |
| </dl> |
| </li> |
| </ul> |
| <a name="statChildren-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>statChildren</h4> |
| <pre>public static <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><<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="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types">RegistryPathStatus</a>> statChildren(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> registryOperations, |
| <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> 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 children of a directory and retrieve their |
| <a href="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types"><code>RegistryPathStatus</code></a> values. |
| <p> |
| This is not an atomic operation; A child may be deleted |
| during the iteration through the child entries. If this happens, |
| the <code>PathNotFoundException</code> is caught and that child |
| entry ommitted.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>path</code> - path</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a possibly empty map of child entries listed by |
| their short name.</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>homePathForCurrentUser</h4> |
| <pre>public 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> homePathForCurrentUser()</pre> |
| <div class="block">Get the home path of the current user. |
| <p> |
| In an insecure cluster, the environment variable |
| <code>HADOOP_USER_NAME</code> is queried <i>first</i>. |
| <p> |
| This means that in a YARN container where the creator set this |
| environment variable to propagate their identity, the defined |
| user name is used in preference to the actual user. |
| <p> |
| In a secure cluster, the kerberos identity of the current user is used.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a path for the current user's home dir.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a></code> - if the current user identity cannot be determined |
| from the OS/kerberos.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getCurrentUsernameUnencoded-java.lang.String-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getCurrentUsernameUnencoded</h4> |
| <pre>public 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> getCurrentUsernameUnencoded(<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> env_hadoop_username)</pre> |
| <div class="block">Get the current username, using the value of the parameter |
| <code>env_hadoop_username</code> if it is set on an insecure cluster. |
| This ensures that the username propagates correctly across processes |
| started by YARN. |
| <p> |
| This method is primarly made visible for testing.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>env_hadoop_username</code> - the environment variable</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the selected username</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a></code> - if there is a problem getting the short user |
| name of the current user.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="currentUser--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>currentUser</h4> |
| <pre>public 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> currentUser()</pre> |
| <div class="block">Get the current user path formatted for the registry |
| <p> |
| In an insecure cluster, the environment variable |
| <code>HADOOP_USER_NAME </code> is queried <i>first</i>. |
| <p> |
| This means that in a YARN container where the creator set this |
| environment variable to propagate their identity, the defined |
| user name is used in preference to the actual user. |
| <p> |
| In a secure cluster, the kerberos identity of the current user is used.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the encoded shortname of the current user</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a></code> - if the current user identity cannot be determined |
| from the OS/kerberos.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="registryUser-java.lang.String-"> |
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| <h4>registryUser</h4> |
| <pre>public 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> registryUser(<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> shortUserName)</pre> |
| <div class="block">Convert the given user name formatted for the registry.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>shortUserName</code> - </dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>converted user name</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>extractServiceRecords</h4> |
| <pre>public static <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><<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="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types">ServiceRecord</a>> extractServiceRecords(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> operations, |
| <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> parentpath, |
| <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><<a href="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types">RegistryPathStatus</a>> stats) |
| 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">Extract all service records under a list of stat operations...this |
| skips entries that are too short or simply not matching</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>operations</code> - operation support for fetches</dd> |
| <dd><code>parentpath</code> - path of the parent of all the entries</dd> |
| <dd><code>stats</code> - Collection of stat results</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a possibly empty map of fullpath:record.</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> - for any IO Operation that wasn't ignored.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="extractServiceRecords-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-java.util.Map-"> |
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| </a> |
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| <h4>extractServiceRecords</h4> |
| <pre>public static <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><<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="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types">ServiceRecord</a>> extractServiceRecords(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> operations, |
| <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> parentpath, |
| <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><<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="../../../../../../org/apache/hadoop/registry/client/types/RegistryPathStatus.html" title="class in org.apache.hadoop.registry.client.types">RegistryPathStatus</a>> stats) |
| 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">Extract all service records under a list of stat operations...this |
| non-atomic action skips entries that are too short or simply not matching. |
| <p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>operations</code> - operation support for fetches</dd> |
| <dd><code>parentpath</code> - path of the parent of all the entries</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a possibly empty map of fullpath:record.</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> - for any IO Operation that wasn't ignored.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="extractServiceRecords-org.apache.hadoop.registry.client.api.RegistryOperations-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>extractServiceRecords</h4> |
| <pre>public static <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><<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="../../../../../../org/apache/hadoop/registry/client/types/ServiceRecord.html" title="class in org.apache.hadoop.registry.client.types">ServiceRecord</a>> extractServiceRecords(<a href="../../../../../../org/apache/hadoop/registry/client/api/RegistryOperations.html" title="interface in org.apache.hadoop.registry.client.api">RegistryOperations</a> operations, |
| <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> parentpath) |
| 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">Extract all service records under a list of stat operations...this |
| non-atomic action skips entries that are too short or simply not matching. |
| <p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>operations</code> - operation support for fetches</dd> |
| <dd><code>parentpath</code> - path of the parent of all the entries</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a possibly empty map of fullpath:record.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
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