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| <h2 title="Class NCPrometheusExporter" class="title">Class NCPrometheusExporter</h2> |
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| <li>org.apache.nlpcraft.model.opencensus.NCPrometheusExporter</li> |
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| <pre>public class <span class="typeNameLabel">NCPrometheusExporter</span> |
| extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> |
| implements <a href="../NCLifecycle.html" title="interface in org.apache.nlpcraft.model">NCLifecycle</a></pre> |
| <div class="block">Probe lifecycle component that manages OpenCensus <a target=_ href="https://prometheus.io">Prometheus</a> stats exporter. See |
| <a target=_ href="https://opencensus.io/exporters/supported-exporters/java/prometheus/">https://opencensus.io/exporters/supported-exporters/java/prometheus/</a> |
| for more details. This is a probe lifecycle component - see <a href="../NCLifecycle.html" title="interface in org.apache.nlpcraft.model"><code>NCLifecycle</code></a> for usage information. |
| <p> |
| When running Prometheus you will need to supply it a configuration file. Here's an example of the minimal |
| YAML configuration you can use to monitor both the server and the probe: |
| <pre class="brush: js"> |
| global: |
| scrape_interval: 5s |
| |
| external_labels: |
| monitor: 'nlpcraft' |
| |
| scrape_configs: |
| - job_name: 'prometheus' |
| scrape_interval: 5s |
| static_configs: |
| - targets: ['localhost:9090'] |
| - job_name: 'nlpcraft-server' |
| scrape_interval: 5s |
| static_configs: |
| - targets: ['localhost:8888'] |
| - job_name: 'nlpcraft-probe' |
| scrape_interval: 5s |
| static_configs: |
| - targets: ['localhost:8889'] |
| </pre> |
| See <a target=_ href="https://nlpcraft.apache.org/server-and-probe.html">documentation</a> on how to configure probe life cycle |
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| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onInit()">onInit</a></span>()</code></th> |
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| <div class="block">Called before lifecycle component is used and just after its creation.</div> |
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| <code><a href="../NCLifecycle.html#onDiscard()">onDiscard</a></code></li> |
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| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../NCLifecycle.html#onInit()">NCLifecycle</a></code></span></div> |
| <div class="block">Called before lifecycle component is used and just after its creation. This method is guaranteed to be |
| called. Default implementation is no-op.</div> |
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