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<div class="subTitle">org.apache.storm.messaging.netty</div>
<h2 title="Class Client" class="title">Class Client</h2>
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<li>org.apache.storm.messaging.netty.Client</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a>, <a href="../../../../../org/apache/storm/messaging/IConnection.html" title="interface in org.apache.storm.messaging">IConnection</a>, <a href="../../../../../org/apache/storm/messaging/netty/ISaslClient.html" title="interface in org.apache.storm.messaging.netty">ISaslClient</a></dd>
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<pre>public class <span class="typeNameLabel">Client</span>
extends <a href="../../../../../org/apache/storm/messaging/ConnectionWithStatus.html" title="class in org.apache.storm.messaging">ConnectionWithStatus</a>
implements <a href="../../../../../org/apache/storm/messaging/netty/ISaslClient.html" title="interface in org.apache.storm.messaging.netty">ISaslClient</a></pre>
<div class="block"><p>A Netty client for sending task messages to a remote destination (Netty server).</p><p><p>Implementation details:</p><p><p>Sending messages, i.e. writing to the channel, is performed asynchronously. Messages are sent in batches to optimize for network throughput at the expense of network latency. The message batch size is configurable. Connecting and reconnecting are performed asynchronously. Note: The current implementation drops any messages that are being enqueued for sending if the connection to the remote destination is currently unavailable.</p></div>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.storm.messaging.<a href="../../../../../org/apache/storm/messaging/ConnectionWithStatus.html" title="class in org.apache.storm.messaging">ConnectionWithStatus</a></h3>
<code><a href="../../../../../org/apache/storm/messaging/ConnectionWithStatus.Status.html" title="enum in org.apache.storm.messaging">ConnectionWithStatus.Status</a></code></li>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>protected <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/storm/messaging/netty/Client.html#dstAddressPrefixedName">dstAddressPrefixedName</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#channelReady-org.apache.storm.shade.io.netty.channel.Channel-">channelReady</a></span>(org.apache.storm.shade.io.netty.channel.Channel&nbsp;channel)</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#close--">close</a></span>()</code>
<div class="block">Gracefully close this client.</div>
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<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#getConfig--">getConfig</a></span>()</code>&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/net/InetSocketAddress.html?is-external=true" title="class or interface in java.net">InetSocketAddress</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#getDstAddress--">getDstAddress</a></span>()</code>&nbsp;</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="../../../../../org/apache/storm/grouping/Load.html" title="class in org.apache.storm.grouping">Load</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#getLoad-java.util.Collection-">getLoad</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;tasks)</code>
<div class="block">Get the current load for the given tasks.</div>
</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#getPort--">getPort</a></span>()</code>
<div class="block">Get the port for this connection.</div>
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<tr id="i6" class="altColor">
<td class="colFirst"><code><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/storm/messaging/netty/Client.html#name--">name</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code><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/storm/messaging/netty/Client.html#secretKey--">secretKey</a></span>()</code>&nbsp;</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#send-java.util.Iterator-">send</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/storm/messaging/TaskMessage.html" title="class in org.apache.storm.messaging">TaskMessage</a>&gt;&nbsp;msgs)</code>
<div class="block">Enqueue task messages to be sent to the remote destination (cf.</div>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#sendBackPressureStatus-org.apache.storm.messaging.netty.BackPressureStatus-">sendBackPressureStatus</a></span>(<a href="../../../../../org/apache/storm/messaging/netty/BackPressureStatus.html" title="class in org.apache.storm.messaging.netty">BackPressureStatus</a>&nbsp;bpStatus)</code>
<div class="block">Sends the back pressure metrics to all downstream connections.</div>
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<tr id="i10" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#sendLoadMetrics-java.util.Map-">sendLoadMetrics</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a>&gt;&nbsp;taskToLoad)</code>
<div class="block">Send load metrics to all downstream connections.</div>
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<td class="colFirst"><code><a href="../../../../../org/apache/storm/messaging/ConnectionWithStatus.Status.html" title="enum in org.apache.storm.messaging">ConnectionWithStatus.Status</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/messaging/netty/Client.html#status--">status</a></span>()</code>
<div class="block">Note: Storm will check via this method whether a worker can be activated safely during the initial startup of a topology.</div>
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<td class="colFirst"><code><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/storm/messaging/netty/Client.html#toString--">toString</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;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#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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<pre>protected 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> dstAddressPrefixedName</pre>
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<h4>status</h4>
<pre>public&nbsp;<a href="../../../../../org/apache/storm/messaging/ConnectionWithStatus.Status.html" title="enum in org.apache.storm.messaging">ConnectionWithStatus.Status</a>&nbsp;status()</pre>
<div class="block"><p>Note: Storm will check via this method whether a worker can be activated safely during the initial startup of a topology. The worker will only be activated once all of the its connections are ready.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/storm/messaging/ConnectionWithStatus.html#status--">status</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/storm/messaging/ConnectionWithStatus.html" title="class in org.apache.storm.messaging">ConnectionWithStatus</a></code></dd>
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<h4>sendLoadMetrics</h4>
<pre>public&nbsp;void&nbsp;sendLoadMetrics(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a>&gt;&nbsp;taskToLoad)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html#sendLoadMetrics-java.util.Map-">IConnection</a></code></span></div>
<div class="block"><p>Send load metrics to all downstream connections.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/storm/messaging/IConnection.html#sendLoadMetrics-java.util.Map-">sendLoadMetrics</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html" title="interface in org.apache.storm.messaging">IConnection</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>taskToLoad</code> - a map from the task id to the load for that task.</dd>
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<pre>public&nbsp;void&nbsp;sendBackPressureStatus(<a href="../../../../../org/apache/storm/messaging/netty/BackPressureStatus.html" title="class in org.apache.storm.messaging.netty">BackPressureStatus</a>&nbsp;bpStatus)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html#sendBackPressureStatus-org.apache.storm.messaging.netty.BackPressureStatus-">IConnection</a></code></span></div>
<div class="block"><p>Sends the back pressure metrics to all downstream connections.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/storm/messaging/IConnection.html#sendBackPressureStatus-org.apache.storm.messaging.netty.BackPressureStatus-">sendBackPressureStatus</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html" title="interface in org.apache.storm.messaging">IConnection</a></code></dd>
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<h4>send</h4>
<pre>public&nbsp;void&nbsp;send(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/storm/messaging/TaskMessage.html" title="class in org.apache.storm.messaging">TaskMessage</a>&gt;&nbsp;msgs)</pre>
<div class="block"><p>Enqueue task messages to be sent to the remote destination (cf. <code>host</code> and <code>port</code>).</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/storm/messaging/IConnection.html#send-java.util.Iterator-">send</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html" title="interface in org.apache.storm.messaging">IConnection</a></code></dd>
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<h4>getDstAddress</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/net/InetSocketAddress.html?is-external=true" title="class or interface in java.net">InetSocketAddress</a>&nbsp;getDstAddress()</pre>
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<pre>public&nbsp;int&nbsp;getPort()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html#getPort--">IConnection</a></code></span></div>
<div class="block"><p>Get the port for this connection.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/storm/messaging/IConnection.html#getPort--">getPort</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html" title="interface in org.apache.storm.messaging">IConnection</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The port this connection is using</dd>
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<h4>close</h4>
<pre>public&nbsp;void&nbsp;close()</pre>
<div class="block"><p>Gracefully close this client.</p></div>
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<dd><code><a href="../../../../../org/apache/storm/messaging/IConnection.html#close--">close</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html" title="interface in org.apache.storm.messaging">IConnection</a></code></dd>
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<h4>getLoad</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="../../../../../org/apache/storm/grouping/Load.html" title="class in org.apache.storm.grouping">Load</a>&gt;&nbsp;getLoad(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;tasks)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html#getLoad-java.util.Collection-">IConnection</a></code></span></div>
<div class="block"><p>Get the current load for the given tasks.</p></div>
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<dd><code><a href="../../../../../org/apache/storm/messaging/IConnection.html#getLoad-java.util.Collection-">getLoad</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/storm/messaging/IConnection.html" title="interface in org.apache.storm.messaging">IConnection</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>tasks</code> - the tasks to look for.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a Load for each of the tasks it knows about.</dd>
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<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;getConfig()</pre>
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<pre>public&nbsp;void&nbsp;channelReady(org.apache.storm.shade.io.netty.channel.Channel&nbsp;channel)</pre>
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<pre>public&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;name()</pre>
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<pre>public&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;secretKey()</pre>
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<pre>public&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;toString()</pre>
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