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| <h2 title="Interface ReadOnlyMetricRegistry" class="title">Interface ReadOnlyMetricRegistry</h2> |
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| <pre>public interface <span class="typeNameLabel">ReadOnlyMetricRegistry</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><span class='angle_bracket'><</span><a href="../../../../../org/apache/ignite/spi/metric/Metric.html" title="interface in org.apache.ignite.spi.metric">Metric</a><span class='angle_bracket'>></span></pre> |
| <div class="block">Read only metric registry. |
| <p> |
| |
| <h2>Java example</h2> |
| See the example below of how the internal metrics can be obtained through your application |
| using <a href="../../../../../org/apache/ignite/spi/metric/ReadOnlyMetricRegistry.html" title="interface in org.apache.ignite.spi.metric"><code>ReadOnlyMetricRegistry</code></a>. |
| |
| <pre> |
| JmxMetricExporterSpi jmxSpi = new JmxMetricExporterSpi(); |
| |
| Ignite ignite = Ignition.start(new IgniteConfiguration() |
| .setDataStorageConfiguration(new DataStorageConfiguration() |
| .setDefaultDataRegionConfiguration( |
| new DataRegionConfiguration() |
| .setMaxSize(12_000_000))) |
| .setIgniteInstanceName("jmxExampleInstanceName") |
| .setMetricExporterSpi(jmxSpi)); |
| |
| |
| ReadOnlyMetricRegistry ioReg = jmxSpi.getSpiContext().getOrCreateMetricRegistry("io.dataregion.default"); |
| |
| Set<String> listOfMetrics = StreamSupport.stream(ioReg.spliterator(), false) |
| .map(Metric::name) |
| .collect(toSet()); |
| |
| System.out.println("The list of available data region metrics: " + listOfMetrics); |
| System.out.println("The 'default' data region MaxSize: " + ioReg.findMetric("MaxSize")); |
| </pre></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/ignite/spi/metric/jmx/JmxMetricExporterSpi.html" title="class in org.apache.ignite.spi.metric.jmx"><code>JmxMetricExporterSpi</code></a>, |
| <a href="../../../../../org/apache/ignite/spi/metric/MetricExporterSpi.html" title="interface in org.apache.ignite.spi.metric"><code>MetricExporterSpi</code></a></dd> |
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| <td class="colFirst"><code><span class='angle_bracket'><</span>M extends <a href="../../../../../org/apache/ignite/spi/metric/Metric.html" title="interface in org.apache.ignite.spi.metric">Metric</a><span class='angle_bracket'>></span><br>M</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/spi/metric/ReadOnlyMetricRegistry.html#findMetric-java.lang.String-">findMetric</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> name)</code> </td> |
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| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/ignite/spi/metric/ReadOnlyMetricRegistry.html#name--">name</a></span>()</code> </td> |
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| <h4>name</h4> |
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| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Registry name.</dd> |
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| <h4>findMetric</h4> |
| <pre>@Nullable |
| <span class='angle_bracket'><</span>M extends <a href="../../../../../org/apache/ignite/spi/metric/Metric.html" title="interface in org.apache.ignite.spi.metric">Metric</a><span class='angle_bracket'>></span> M findMetric(<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> name)</pre> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - Name of the metric.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Metric with specified name if exists. Null otherwise.</dd> |
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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://ignite.apache.org"><nobr>2021 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> </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>Ignite Database and Caching Platform</b> </td> <td>: ver. <strong>2.11.1</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: December 20 2021 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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