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| <li>Summary: </li> |
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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.storm.loadgen</a></div> |
| <h1 title="Class LoadSpout" class="title">Class LoadSpout</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance"><a href="../topology/base/BaseComponent.html" title="class in org.apache.storm.topology.base">org.apache.storm.topology.base.BaseComponent</a> |
| <div class="inheritance"><a href="../topology/base/BaseRichSpout.html" title="class in org.apache.storm.topology.base">org.apache.storm.topology.base.BaseRichSpout</a> |
| <div class="inheritance">org.apache.storm.loadgen.LoadSpout</div> |
| </div> |
| </div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/Serializable.html" title="class or interface in java.io" class="external-link">Serializable</a></code>, <code><a href="../spout/ISpout.html" title="interface in org.apache.storm.spout">ISpout</a></code>, <code><a href="../topology/IComponent.html" title="interface in org.apache.storm.topology">IComponent</a></code>, <code><a href="../topology/IRichSpout.html" title="interface in org.apache.storm.topology">IRichSpout</a></code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="ThroughputVsLatency.FastRandomSentenceSpout.html" title="class in org.apache.storm.loadgen">ThroughputVsLatency.FastRandomSentenceSpout</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">LoadSpout</span> |
| <span class="extends-implements">extends <a href="../topology/base/BaseRichSpout.html" title="class in org.apache.storm.topology.base">BaseRichSpout</a></span></div> |
| <div class="block">A spout that simulates a real world spout based off of statistics about it.</div> |
| <dl class="notes"> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list"> |
| <li><a href="../../../../serialized-form.html#org.apache.storm.loadgen.LoadSpout">Serialized Form</a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <li> |
| <section class="constructor-summary" id="constructor-summary"> |
| <h2>Constructor Summary</h2> |
| <div class="caption"><span>Constructors</span></div> |
| <div class="summary-table two-column-summary"> |
| <div class="table-header col-first">Constructor</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(double)" class="member-name-link">LoadSpout</a><wbr>(double ratePerSecond)</code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Create a simple load spout with just a set rate per second on the default stream.</div> |
| </div> |
| <div class="col-constructor-name odd-row-color"><code><a href="#%3Cinit%3E(org.apache.storm.loadgen.LoadCompConf)" class="member-name-link">LoadSpout</a><wbr>(<a href="LoadCompConf.html" title="class in org.apache.storm.loadgen">LoadCompConf</a> conf)</code></div> |
| <div class="col-last odd-row-color"> </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
| <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div> |
| <div id="method-summary-table.tabpanel" role="tabpanel"> |
| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#ack(java.lang.Object)" class="member-name-link">ack</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> id)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Storm has determined that the tuple emitted by this spout with the msgId identifier has been fully processed.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#declareOutputFields(org.apache.storm.topology.OutputFieldsDeclarer)" class="member-name-link">declareOutputFields</a><wbr>(<a href="../topology/OutputFieldsDeclarer.html" title="interface in org.apache.storm.topology">OutputFieldsDeclarer</a> declarer)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Declare the output schema for all the streams of this topology.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#fail(java.lang.Object)" class="member-name-link">fail</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> id)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">The tuple emitted by this spout with the msgId identifier has failed to be fully processed.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected <a href="../tuple/Values.html" title="class in org.apache.storm.tuple">Values</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getNextValues(org.apache.storm.loadgen.OutputStreamEngine)" class="member-name-link">getNextValues</a><wbr>(<a href="OutputStreamEngine.html" title="class in org.apache.storm.loadgen">OutputStreamEngine</a> se)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#nextTuple()" class="member-name-link">nextTuple</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">When this method is called, Storm is requesting that the Spout emit tuples to the output collector.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#open(java.util.Map,org.apache.storm.task.TopologyContext,org.apache.storm.spout.SpoutOutputCollector)" class="member-name-link">open</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a><<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>> conf, |
| <a href="../task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context, |
| <a href="../spout/SpoutOutputCollector.html" title="class in org.apache.storm.spout">SpoutOutputCollector</a> collector)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Called when a task for this component is initialized within a worker on the cluster.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.storm.topology.base.BaseRichSpout">Methods inherited from class org.apache.storm.topology.base.<a href="../topology/base/BaseRichSpout.html" title="class in org.apache.storm.topology.base">BaseRichSpout</a></h3> |
| <code><a href="../topology/base/BaseRichSpout.html#activate()">activate</a>, <a href="../topology/base/BaseRichSpout.html#close()">close</a>, <a href="../topology/base/BaseRichSpout.html#deactivate()">deactivate</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.storm.topology.base.BaseComponent">Methods inherited from class org.apache.storm.topology.base.<a href="../topology/base/BaseComponent.html" title="class in org.apache.storm.topology.base">BaseComponent</a></h3> |
| <code><a href="../topology/base/BaseComponent.html#getComponentConfiguration()">getComponentConfiguration</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.storm.topology.IComponent">Methods inherited from interface org.apache.storm.topology.<a href="../topology/IComponent.html" title="interface in org.apache.storm.topology">IComponent</a></h3> |
| <code><a href="../topology/IComponent.html#getComponentConfiguration()">getComponentConfiguration</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor-detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>(double)"> |
| <h3>LoadSpout</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="element-name">LoadSpout</span><wbr><span class="parameters">(double ratePerSecond)</span></div> |
| <div class="block">Create a simple load spout with just a set rate per second on the default stream.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>ratePerSecond</code> - the rate to send messages at.</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="<init>(org.apache.storm.loadgen.LoadCompConf)"> |
| <h3>LoadSpout</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="element-name">LoadSpout</span><wbr><span class="parameters">(<a href="LoadCompConf.html" title="class in org.apache.storm.loadgen">LoadCompConf</a> conf)</span></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="open(java.util.Map,org.apache.storm.task.TopologyContext,org.apache.storm.spout.SpoutOutputCollector)"> |
| <h3>open</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">open</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a><<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>> conf, |
| <a href="../task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context, |
| <a href="../spout/SpoutOutputCollector.html" title="class in org.apache.storm.spout">SpoutOutputCollector</a> collector)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../spout/ISpout.html#open(java.util.Map,org.apache.storm.task.TopologyContext,org.apache.storm.spout.SpoutOutputCollector)">ISpout</a></code></span></div> |
| <div class="block">Called when a task for this component is initialized within a worker on the cluster. It provides the spout with the environment in |
| which the spout executes. |
| |
| <p>This includes the:</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>conf</code> - The Storm configuration for this spout. This is the configuration provided to the topology merged in with cluster |
| configuration on this machine.</dd> |
| <dd><code>context</code> - This object can be used to get information about this task's place within the topology, including the task id and |
| component id of this task, input and output information, etc.</dd> |
| <dd><code>collector</code> - The collector is used to emit tuples from this spout. Tuples can be emitted at any time, including the open and |
| close methods. The collector is thread-safe and should be saved as an instance variable of this spout object.</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="nextTuple()"> |
| <h3>nextTuple</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">nextTuple</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../spout/ISpout.html#nextTuple()">ISpout</a></code></span></div> |
| <div class="block">When this method is called, Storm is requesting that the Spout emit tuples to the output collector. This method should be |
| non-blocking, so if the Spout has no tuples to emit, this method should return. nextTuple, ack, and fail are all called in a tight |
| loop in a single thread in the spout task. When there are no tuples to emit, it is courteous to have nextTuple sleep for a short |
| amount of time (like a single millisecond) so as not to waste too much CPU.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getNextValues(org.apache.storm.loadgen.OutputStreamEngine)"> |
| <h3>getNextValues</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type"><a href="../tuple/Values.html" title="class in org.apache.storm.tuple">Values</a></span> <span class="element-name">getNextValues</span><wbr><span class="parameters">(<a href="OutputStreamEngine.html" title="class in org.apache.storm.loadgen">OutputStreamEngine</a> se)</span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="declareOutputFields(org.apache.storm.topology.OutputFieldsDeclarer)"> |
| <h3>declareOutputFields</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">declareOutputFields</span><wbr><span class="parameters">(<a href="../topology/OutputFieldsDeclarer.html" title="interface in org.apache.storm.topology">OutputFieldsDeclarer</a> declarer)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../topology/IComponent.html#declareOutputFields(org.apache.storm.topology.OutputFieldsDeclarer)">IComponent</a></code></span></div> |
| <div class="block">Declare the output schema for all the streams of this topology.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>declarer</code> - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="ack(java.lang.Object)"> |
| <h3>ack</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">ack</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> id)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../spout/ISpout.html#ack(java.lang.Object)">ISpout</a></code></span></div> |
| <div class="block">Storm has determined that the tuple emitted by this spout with the msgId identifier has been fully processed. Typically, an |
| implementation of this method will take that message off the queue and prevent it from being replayed.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="../spout/ISpout.html#ack(java.lang.Object)">ack</a></code> in interface <code><a href="../spout/ISpout.html" title="interface in org.apache.storm.spout">ISpout</a></code></dd> |
| <dt>Overrides:</dt> |
| <dd><code><a href="../topology/base/BaseRichSpout.html#ack(java.lang.Object)">ack</a></code> in class <code><a href="../topology/base/BaseRichSpout.html" title="class in org.apache.storm.topology.base">BaseRichSpout</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="fail(java.lang.Object)"> |
| <h3>fail</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">fail</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> id)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="../spout/ISpout.html#fail(java.lang.Object)">ISpout</a></code></span></div> |
| <div class="block">The tuple emitted by this spout with the msgId identifier has failed to be fully processed. Typically, an implementation of this |
| method will put that message back on the queue to be replayed at a later time.</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="../spout/ISpout.html#fail(java.lang.Object)">fail</a></code> in interface <code><a href="../spout/ISpout.html" title="interface in org.apache.storm.spout">ISpout</a></code></dd> |
| <dt>Overrides:</dt> |
| <dd><code><a href="../topology/base/BaseRichSpout.html#fail(java.lang.Object)">fail</a></code> in class <code><a href="../topology/base/BaseRichSpout.html" title="class in org.apache.storm.topology.base">BaseRichSpout</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
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