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<h2 title="Class Cluster" class="title">Class Cluster</h2>
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<pre>public final class <span class="typeNameLabel">Cluster</span>
extends java.lang.Object</pre>
<div class="block">A representation of a subset of the nodes, topics, and partitions in the Kafka cluster.</div>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#Cluster-java.lang.String-java.util.Collection-java.util.Collection-java.util.Set-java.util.Set-">Cluster</a></span>&#8203;(java.lang.String&nbsp;clusterId,
java.util.Collection&lt;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&gt;&nbsp;nodes,
java.util.Collection&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;partitions,
java.util.Set&lt;java.lang.String&gt;&nbsp;unauthorizedTopics,
java.util.Set&lt;java.lang.String&gt;&nbsp;internalTopics)</code></th>
<td class="colLast">
<div class="block">Create a new cluster with the given id, nodes and partitions</div>
</td>
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<tr class="rowColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#Cluster-java.lang.String-java.util.Collection-java.util.Collection-java.util.Set-java.util.Set-org.apache.kafka.common.Node-">Cluster</a></span>&#8203;(java.lang.String&nbsp;clusterId,
java.util.Collection&lt;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&gt;&nbsp;nodes,
java.util.Collection&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;partitions,
java.util.Set&lt;java.lang.String&gt;&nbsp;unauthorizedTopics,
java.util.Set&lt;java.lang.String&gt;&nbsp;internalTopics,
<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&nbsp;controller)</code></th>
<td class="colLast">
<div class="block">Create a new cluster with the given id, nodes and partitions</div>
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<td class="colFirst"><code>java.util.List&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#availablePartitionsForTopic-java.lang.String-">availablePartitionsForTopic</a></span>&#8203;(java.lang.String&nbsp;topic)</code></th>
<td class="colLast">
<div class="block">Get the list of available partitions for this topic</div>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/kafka/common/Cluster.html" title="class in org.apache.kafka.common">Cluster</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#bootstrap-java.util.List-">bootstrap</a></span>&#8203;(java.util.List&lt;java.net.InetSocketAddress&gt;&nbsp;addresses)</code></th>
<td class="colLast">
<div class="block">Create a "bootstrap" cluster using the given list of host/ports</div>
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<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/kafka/common/ClusterResource.html" title="class in org.apache.kafka.common">ClusterResource</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#clusterResource--">clusterResource</a></span>&#8203;()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#controller--">controller</a></span>&#8203;()</code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code>static <a href="../../../../org/apache/kafka/common/Cluster.html" title="class in org.apache.kafka.common">Cluster</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#empty--">empty</a></span>&#8203;()</code></th>
<td class="colLast">
<div class="block">Create an empty cluster instance with no nodes and no topic-partitions.</div>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>java.util.Set&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#internalTopics--">internalTopics</a></span>&#8203;()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#isBootstrapConfigured--">isBootstrapConfigured</a></span>&#8203;()</code></th>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#leaderFor-org.apache.kafka.common.TopicPartition-">leaderFor</a></span>&#8203;(<a href="../../../../org/apache/kafka/common/TopicPartition.html" title="class in org.apache.kafka.common">TopicPartition</a>&nbsp;topicPartition)</code></th>
<td class="colLast">
<div class="block">Get the current leader for the given topic-partition</div>
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<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#nodeById-int-">nodeById</a></span>&#8203;(int&nbsp;id)</code></th>
<td class="colLast">
<div class="block">Get the node by the node id (or null if no such node exists)</div>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>java.util.List&lt;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&gt;</code></td>
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<td class="colFirst"><code><a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#partition-org.apache.kafka.common.TopicPartition-">partition</a></span>&#8203;(<a href="../../../../org/apache/kafka/common/TopicPartition.html" title="class in org.apache.kafka.common">TopicPartition</a>&nbsp;topicPartition)</code></th>
<td class="colLast">
<div class="block">Get the metadata for the specified partition</div>
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<tr id="i11" class="rowColor">
<td class="colFirst"><code>java.lang.Integer</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#partitionCountForTopic-java.lang.String-">partitionCountForTopic</a></span>&#8203;(java.lang.String&nbsp;topic)</code></th>
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<div class="block">Get the number of partitions for the given topic</div>
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<tr id="i12" class="altColor">
<td class="colFirst"><code>java.util.List&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#partitionsForNode-int-">partitionsForNode</a></span>&#8203;(int&nbsp;nodeId)</code></th>
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<div class="block">Get the list of partitions whose leader is this node</div>
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<tr id="i13" class="rowColor">
<td class="colFirst"><code>java.util.List&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#partitionsForTopic-java.lang.String-">partitionsForTopic</a></span>&#8203;(java.lang.String&nbsp;topic)</code></th>
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<div class="block">Get the list of partitions for this topic</div>
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<tr id="i14" class="altColor">
<td class="colFirst"><code>java.util.Set&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#topics--">topics</a></span>&#8203;()</code></th>
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<div class="block">Get all topics.</div>
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<tr id="i15" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#toString--">toString</a></span>&#8203;()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i16" class="altColor">
<td class="colFirst"><code>java.util.Set&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#unauthorizedTopics--">unauthorizedTopics</a></span>&#8203;()</code></th>
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<td class="colFirst"><code><a href="../../../../org/apache/kafka/common/Cluster.html" title="class in org.apache.kafka.common">Cluster</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/kafka/common/Cluster.html#withPartitions-java.util.Map-">withPartitions</a></span>&#8203;(java.util.Map&lt;<a href="../../../../org/apache/kafka/common/TopicPartition.html" title="class in org.apache.kafka.common">TopicPartition</a>,<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;partitions)</code></th>
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<div class="block">Return a copy of this cluster combined with `partitions`.</div>
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<h4>Cluster</h4>
<pre>public&nbsp;Cluster&#8203;(java.lang.String&nbsp;clusterId,
java.util.Collection&lt;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&gt;&nbsp;nodes,
java.util.Collection&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;partitions,
java.util.Set&lt;java.lang.String&gt;&nbsp;unauthorizedTopics,
java.util.Set&lt;java.lang.String&gt;&nbsp;internalTopics)</pre>
<div class="block">Create a new cluster with the given id, nodes and partitions</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>nodes</code> - The nodes in the cluster</dd>
<dd><code>partitions</code> - Information about a subset of the topic-partitions this cluster hosts</dd>
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<h4>Cluster</h4>
<pre>public&nbsp;Cluster&#8203;(java.lang.String&nbsp;clusterId,
java.util.Collection&lt;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&gt;&nbsp;nodes,
java.util.Collection&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;partitions,
java.util.Set&lt;java.lang.String&gt;&nbsp;unauthorizedTopics,
java.util.Set&lt;java.lang.String&gt;&nbsp;internalTopics,
<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&nbsp;controller)</pre>
<div class="block">Create a new cluster with the given id, nodes and partitions</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>nodes</code> - The nodes in the cluster</dd>
<dd><code>partitions</code> - Information about a subset of the topic-partitions this cluster hosts</dd>
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<pre>public static&nbsp;<a href="../../../../org/apache/kafka/common/Cluster.html" title="class in org.apache.kafka.common">Cluster</a>&nbsp;empty&#8203;()</pre>
<div class="block">Create an empty cluster instance with no nodes and no topic-partitions.</div>
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<h4>bootstrap</h4>
<pre>public static&nbsp;<a href="../../../../org/apache/kafka/common/Cluster.html" title="class in org.apache.kafka.common">Cluster</a>&nbsp;bootstrap&#8203;(java.util.List&lt;java.net.InetSocketAddress&gt;&nbsp;addresses)</pre>
<div class="block">Create a "bootstrap" cluster using the given list of host/ports</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>addresses</code> - The addresses</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A cluster for these hosts/ports</dd>
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<h4>withPartitions</h4>
<pre>public&nbsp;<a href="../../../../org/apache/kafka/common/Cluster.html" title="class in org.apache.kafka.common">Cluster</a>&nbsp;withPartitions&#8203;(java.util.Map&lt;<a href="../../../../org/apache/kafka/common/TopicPartition.html" title="class in org.apache.kafka.common">TopicPartition</a>,<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;partitions)</pre>
<div class="block">Return a copy of this cluster combined with `partitions`.</div>
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<h4>nodes</h4>
<pre>public&nbsp;java.util.List&lt;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&gt;&nbsp;nodes&#8203;()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The known set of nodes</dd>
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<h4>nodeById</h4>
<pre>public&nbsp;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&nbsp;nodeById&#8203;(int&nbsp;id)</pre>
<div class="block">Get the node by the node id (or null if no such node exists)</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>id</code> - The id of the node</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The node, or null if no such node exists</dd>
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<pre>public&nbsp;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&nbsp;leaderFor&#8203;(<a href="../../../../org/apache/kafka/common/TopicPartition.html" title="class in org.apache.kafka.common">TopicPartition</a>&nbsp;topicPartition)</pre>
<div class="block">Get the current leader for the given topic-partition</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>topicPartition</code> - The topic and partition we want to know the leader for</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The node that is the leader for this topic-partition, or null if there is currently no leader</dd>
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<pre>public&nbsp;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&nbsp;partition&#8203;(<a href="../../../../org/apache/kafka/common/TopicPartition.html" title="class in org.apache.kafka.common">TopicPartition</a>&nbsp;topicPartition)</pre>
<div class="block">Get the metadata for the specified partition</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>topicPartition</code> - The topic and partition to fetch info for</dd>
<dt><span class="returnLabel">Returns:</span></dt>
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<pre>public&nbsp;java.util.List&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;partitionsForTopic&#8203;(java.lang.String&nbsp;topic)</pre>
<div class="block">Get the list of partitions for this topic</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>topic</code> - The topic name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A list of partitions</dd>
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<pre>public&nbsp;java.lang.Integer&nbsp;partitionCountForTopic&#8203;(java.lang.String&nbsp;topic)</pre>
<div class="block">Get the number of partitions for the given topic</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>topic</code> - The topic to get the number of partitions for</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The number of partitions or null if there is no corresponding metadata</dd>
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<pre>public&nbsp;java.util.List&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;availablePartitionsForTopic&#8203;(java.lang.String&nbsp;topic)</pre>
<div class="block">Get the list of available partitions for this topic</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>topic</code> - The topic name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A list of partitions</dd>
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<pre>public&nbsp;java.util.List&lt;<a href="../../../../org/apache/kafka/common/PartitionInfo.html" title="class in org.apache.kafka.common">PartitionInfo</a>&gt;&nbsp;partitionsForNode&#8203;(int&nbsp;nodeId)</pre>
<div class="block">Get the list of partitions whose leader is this node</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>nodeId</code> - The node id</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A list of partitions</dd>
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<pre>public&nbsp;java.util.Set&lt;java.lang.String&gt;&nbsp;topics&#8203;()</pre>
<div class="block">Get all topics.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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<pre>public&nbsp;java.util.Set&lt;java.lang.String&gt;&nbsp;internalTopics&#8203;()</pre>
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<pre>public&nbsp;<a href="../../../../org/apache/kafka/common/ClusterResource.html" title="class in org.apache.kafka.common">ClusterResource</a>&nbsp;clusterResource&#8203;()</pre>
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<pre>public&nbsp;<a href="../../../../org/apache/kafka/common/Node.html" title="class in org.apache.kafka.common">Node</a>&nbsp;controller&#8203;()</pre>
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<pre>public&nbsp;java.lang.String&nbsp;toString&#8203;()</pre>
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