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| <div class="subTitle">org.apache.ignite</div> |
| <h2 title="Interface IgniteStreamer" class="title">Interface IgniteStreamer</h2> |
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| <pre>public interface <span class="strong">IgniteStreamer</span></pre> |
| <div class="block">Streamer interface. Streamer provides an easy way to process large (possibly infinite) stream of |
| events. Event can be of any object type, different types of events can be submitted to streamer. Each event |
| is processed by one or more <a href="../../../org/apache/ignite/streamer/StreamerStage.html" title="interface in org.apache.ignite.streamer"><code>StreamerStage</code></a>, a set of stages event passed through is called pipeline. |
| <p> |
| For each submitted group of events streamer determines one or more execution nodes that will process this |
| group of events. Execution nodes are determined by <a href="../../../org/apache/ignite/streamer/StreamerEventRouter.html" title="interface in org.apache.ignite.streamer"><code>StreamerEventRouter</code></a>. Execution nodes run stages |
| with received events. After stage execution streamer gets an optional set of events that should be processed |
| further. The process is repeated until stage returns empty map. After stage returned empty map pipeline execution |
| for given group of events is finished. |
| <p> |
| It is guaranteed that group of events returned by router will be neither split nor concatenated with |
| any other group of events and will be passed to stage as is. Event processing order is not guaranteed, group that |
| was submitted second can be processed earlier then first submitted group. |
| <p> |
| If <a href="../../../org/apache/ignite/streamer/StreamerConfiguration.html#isAtLeastOnce()"><code>StreamerConfiguration.isAtLeastOnce()</code></a> is set to <code>false</code>, then event execution is not tracked |
| by streamer and any occurred failure will be reported to failure listener on node on which failure happened. If |
| this configuration property is set to <code>true</code>, then streamer will cancel current pipeline execution in case |
| of failure and will try to execute pipeline from the beginning. If failover cannot be succeeded or maximum number |
| of failover attempts is exceeded, then listener will be notified on node which originated pipeline execution.</div> |
| <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/ignite/streamer/StreamerStage.html" title="interface in org.apache.ignite.streamer"><code>StreamerStage</code></a>, |
| <a href="../../../org/apache/ignite/streamer/StreamerEventRouter.html" title="interface in org.apache.ignite.streamer"><code>StreamerEventRouter</code></a></dd></dl> |
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| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#addEvent(java.lang.Object, java.lang.Object...)">addEvent</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> evt, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>... evts)</code> |
| <div class="block">Submits group of events for processing.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#addEvents(java.util.Collection)">addEvents</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span> evts)</code> |
| <div class="block">Submits group of events for processing.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#addEventsToStage(java.lang.String, java.util.Collection)">addEventsToStage</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> stageName, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span> evts)</code> |
| <div class="block">Submits events to streamer.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#addEventToStage(java.lang.String, java.lang.Object, java.lang.Object...)">addEventToStage</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> stageName, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> evt, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>... evts)</code> |
| <div class="block">Submits group of events to streamer.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#addStreamerFailureListener(org.apache.ignite.streamer.StreamerFailureListener)">addStreamerFailureListener</a></strong>(<a href="../../../org/apache/ignite/streamer/StreamerFailureListener.html" title="interface in org.apache.ignite.streamer">StreamerFailureListener</a> lsnr)</code> |
| <div class="block">Adds streamer failure listener.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../org/apache/ignite/streamer/StreamerConfiguration.html" title="class in org.apache.ignite.streamer">StreamerConfiguration</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#configuration()">configuration</a></strong>()</code> |
| <div class="block">Gets streamer configuration.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../org/apache/ignite/streamer/StreamerContext.html" title="interface in org.apache.ignite.streamer">StreamerContext</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#context()">context</a></strong>()</code> |
| <div class="block">Gets streamer context.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#deployClass(java.lang.Class)">deployClass</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span> depCls)</code> |
| <div class="block">Explicitly sets deployment class.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../org/apache/ignite/streamer/StreamerMetrics.html" title="interface in org.apache.ignite.streamer">StreamerMetrics</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#metrics()">metrics</a></strong>()</code> |
| <div class="block">Gets current streamer metrics.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#name()">name</a></strong>()</code> |
| <div class="block">Gets streamer name.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#removeStreamerFailureListener(org.apache.ignite.streamer.StreamerFailureListener)">removeStreamerFailureListener</a></strong>(<a href="../../../org/apache/ignite/streamer/StreamerFailureListener.html" title="interface in org.apache.ignite.streamer">StreamerFailureListener</a> lsnr)</code> |
| <div class="block">Removes streamer failure listener.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#reset()">reset</a></strong>()</code> |
| <div class="block">Resets all configured streamer windows by calling <a href="../../../org/apache/ignite/streamer/StreamerWindow.html#reset()"><code>StreamerWindow.reset()</code></a> on each and |
| clears local space.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/IgniteStreamer.html#resetMetrics()">resetMetrics</a></strong>()</code> |
| <div class="block">Resets all streamer metrics.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <h3>Method Detail</h3> |
| <a name="configuration()"> |
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| <h4>configuration</h4> |
| <pre><a href="../../../org/apache/ignite/streamer/StreamerConfiguration.html" title="class in org.apache.ignite.streamer">StreamerConfiguration</a> configuration()</pre> |
| <div class="block">Gets streamer configuration.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Streamer configuration.</dd></dl> |
| </li> |
| </ul> |
| <a name="name()"> |
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| <h4>name</h4> |
| <pre><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name()</pre> |
| <div class="block">Gets streamer name.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Streamer name, or <code>null</code> for default no-name streamer.</dd></dl> |
| </li> |
| </ul> |
| <a name="addEvent(java.lang.Object, java.lang.Object...)"> |
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| <h4>addEvent</h4> |
| <pre>void addEvent(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> evt, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>... evts) |
| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Submits group of events for processing. This group of events will be processed on default stage, |
| i.e. stage that is the first in the streamer stages list.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>evt</code> - Event to add.</dd><dd><code>evts</code> - Optional events to add.</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If event submission failed.</dd></dl> |
| </li> |
| </ul> |
| <a name="addEventToStage(java.lang.String, java.lang.Object, java.lang.Object...)"> |
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| </a> |
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| <h4>addEventToStage</h4> |
| <pre>void addEventToStage(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> stageName, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> evt, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>... evts) |
| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Submits group of events to streamer. Events will be processed from a stage with specified name.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>stageName</code> - Stage name to start with.</dd><dd><code>evt</code> - Event tp process.</dd><dd><code>evts</code> - Optional events.</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If event submission failed.</dd></dl> |
| </li> |
| </ul> |
| <a name="addEvents(java.util.Collection)"> |
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| </a> |
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| <h4>addEvents</h4> |
| <pre>void addEvents(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span> evts) |
| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Submits group of events for processing. This group of events will be processed on default stage, |
| i.e. stage that is the first in the streamer stages list.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>evts</code> - Events to add.</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If event submission failed.</dd></dl> |
| </li> |
| </ul> |
| <a name="addEventsToStage(java.lang.String, java.util.Collection)"> |
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| <h4>addEventsToStage</h4> |
| <pre>void addEventsToStage(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> stageName, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span> evts) |
| throws <a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre> |
| <div class="block">Submits events to streamer. Events will be processed from a stage with specified name.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>stageName</code> - Stage name to start with.</dd><dd><code>evts</code> - Events to process.</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - If event submission failed.</dd></dl> |
| </li> |
| </ul> |
| <a name="context()"> |
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| </a> |
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| <h4>context</h4> |
| <pre><a href="../../../org/apache/ignite/streamer/StreamerContext.html" title="interface in org.apache.ignite.streamer">StreamerContext</a> context()</pre> |
| <div class="block">Gets streamer context. Streamer context provides access to streamer local space on this node, configured |
| streamer windows and provides various methods to run streamer queries.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Streamer context.</dd></dl> |
| </li> |
| </ul> |
| <a name="addStreamerFailureListener(org.apache.ignite.streamer.StreamerFailureListener)"> |
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| <h4>addStreamerFailureListener</h4> |
| <pre>void addStreamerFailureListener(<a href="../../../org/apache/ignite/streamer/StreamerFailureListener.html" title="interface in org.apache.ignite.streamer">StreamerFailureListener</a> lsnr)</pre> |
| <div class="block">Adds streamer failure listener. Listener will be notified on node on which failure occurred in case if |
| <a href="../../../org/apache/ignite/streamer/StreamerConfiguration.html#isAtLeastOnce()"><code>StreamerConfiguration.isAtLeastOnce()</code></a> is set to <code>false</code> and on node which originated |
| pipeline execution otherwise.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>lsnr</code> - Listener to add.</dd></dl> |
| </li> |
| </ul> |
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| <h4>removeStreamerFailureListener</h4> |
| <pre>void removeStreamerFailureListener(<a href="../../../org/apache/ignite/streamer/StreamerFailureListener.html" title="interface in org.apache.ignite.streamer">StreamerFailureListener</a> lsnr)</pre> |
| <div class="block">Removes streamer failure listener.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>lsnr</code> - Listener to remove.</dd></dl> |
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| <h4>metrics</h4> |
| <pre><a href="../../../org/apache/ignite/streamer/StreamerMetrics.html" title="interface in org.apache.ignite.streamer">StreamerMetrics</a> metrics()</pre> |
| <div class="block">Gets current streamer metrics.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Streamer metrics.</dd></dl> |
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| <h4>reset</h4> |
| <pre>void reset()</pre> |
| <div class="block">Resets all configured streamer windows by calling <a href="../../../org/apache/ignite/streamer/StreamerWindow.html#reset()"><code>StreamerWindow.reset()</code></a> on each and |
| clears local space. |
| <p> |
| This is local method, it will clear only local windows and local space. Note that windows and |
| space will not be cleaned while stages are executing, i.e. all currently running stages will |
| have to complete before streamer can be reset.</div> |
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| <h4>resetMetrics</h4> |
| <pre>void resetMetrics()</pre> |
| <div class="block">Resets all streamer metrics.</div> |
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| <h4>deployClass</h4> |
| <pre>void deployClass(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><span class='angle_bracket'><</span>?<span class='angle_bracket'>></span> depCls)</pre> |
| <div class="block">Explicitly sets deployment class. Will be used only if peer-to-peer class loading |
| is enabled.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>depCls</code> - Deployment class.</dd></dl> |
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| <div class="aboutLanguage"><em>Apache Ignite - In-Memory Data Fabric</em></div> |
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| <p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://incubator.apache.org/projects/ignite.html"><nobr>2015 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Apache Ignite Fabric</b> </td> <td>: ver. <strong>1.0.0-RC3</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: March 24 2015 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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