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Merge pull request quarkusio#39032 from brunobat/otel-metrics
Otel metrics support
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101
.../deployment/src/main/java/io/quarkus/opentelemetry/deployment/metric/MetricProcessor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package io.quarkus.opentelemetry.deployment.metric; | ||
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| import java.util.Collection; | ||
| import java.util.HashSet; | ||
| import java.util.Set; | ||
| import java.util.function.BooleanSupplier; | ||
| import java.util.function.Function; | ||
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| import org.jboss.jandex.AnnotationInstance; | ||
| import org.jboss.jandex.AnnotationTarget; | ||
| import org.jboss.jandex.DotName; | ||
| import org.jboss.jandex.FieldInfo; | ||
| import org.jboss.jandex.IndexView; | ||
| import org.jboss.jandex.MethodInfo; | ||
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| import io.opentelemetry.sdk.metrics.export.MetricExporter; | ||
| import io.opentelemetry.sdk.metrics.export.MetricReader; | ||
| import io.quarkus.arc.deployment.AdditionalBeanBuildItem; | ||
| import io.quarkus.arc.deployment.UnremovableBeanBuildItem; | ||
| import io.quarkus.arc.processor.DotNames; | ||
| import io.quarkus.deployment.annotations.BuildProducer; | ||
| import io.quarkus.deployment.annotations.BuildStep; | ||
| import io.quarkus.deployment.annotations.BuildSteps; | ||
| import io.quarkus.deployment.builditem.CombinedIndexBuildItem; | ||
| import io.quarkus.opentelemetry.runtime.config.build.OTelBuildConfig; | ||
| import io.quarkus.opentelemetry.runtime.metrics.cdi.MetricsProducer; | ||
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| @BuildSteps(onlyIf = MetricProcessor.MetricEnabled.class) | ||
| public class MetricProcessor { | ||
| private static final DotName METRIC_EXPORTER = DotName.createSimple(MetricExporter.class.getName()); | ||
| private static final DotName METRIC_READER = DotName.createSimple(MetricReader.class.getName()); | ||
| private static final DotName METRIC_PROCESSOR = DotName.createSimple(MetricProcessor.class.getName()); | ||
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| @BuildStep | ||
| UnremovableBeanBuildItem ensureProducersAreRetained( | ||
| CombinedIndexBuildItem indexBuildItem, | ||
| BuildProducer<AdditionalBeanBuildItem> additionalBeans) { | ||
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| additionalBeans.produce(AdditionalBeanBuildItem.builder() | ||
| .setUnremovable() | ||
| .addBeanClass(MetricsProducer.class) | ||
| .build()); | ||
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| IndexView index = indexBuildItem.getIndex(); | ||
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| // Find all known SpanExporters and SpanProcessors | ||
| Collection<String> knownClasses = new HashSet<>(); | ||
| knownClasses.add(METRIC_EXPORTER.toString()); | ||
| index.getAllKnownImplementors(METRIC_EXPORTER) | ||
| .forEach(classInfo -> knownClasses.add(classInfo.name().toString())); | ||
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| knownClasses.add(METRIC_READER.toString()); | ||
| index.getAllKnownImplementors(METRIC_READER) | ||
| .forEach(classInfo -> knownClasses.add(classInfo.name().toString())); | ||
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| knownClasses.add(METRIC_PROCESSOR.toString()); | ||
| index.getAllKnownImplementors(METRIC_PROCESSOR) | ||
| .forEach(classInfo -> knownClasses.add(classInfo.name().toString())); | ||
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| Set<String> retainProducers = new HashSet<>(); | ||
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| for (AnnotationInstance annotation : index.getAnnotations(DotNames.PRODUCES)) { | ||
| AnnotationTarget target = annotation.target(); | ||
| switch (target.kind()) { | ||
| case METHOD: | ||
| MethodInfo method = target.asMethod(); | ||
| String returnType = method.returnType().name().toString(); | ||
| if (knownClasses.contains(returnType)) { | ||
| retainProducers.add(method.declaringClass().name().toString()); | ||
| } | ||
| break; | ||
| case FIELD: | ||
| FieldInfo field = target.asField(); | ||
| String fieldType = field.type().name().toString(); | ||
| if (knownClasses.contains(fieldType)) { | ||
| retainProducers.add(field.declaringClass().name().toString()); | ||
| } | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
| } | ||
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| return new UnremovableBeanBuildItem(new UnremovableBeanBuildItem.BeanClassNamesExclusion(retainProducers)); | ||
| } | ||
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| public static class MetricEnabled implements BooleanSupplier { | ||
| OTelBuildConfig otelBuildConfig; | ||
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| public boolean getAsBoolean() { | ||
| return otelBuildConfig.metrics().enabled() | ||
| .map(new Function<Boolean, Boolean>() { | ||
| @Override | ||
| public Boolean apply(Boolean enabled) { | ||
| return otelBuildConfig.enabled() && enabled; | ||
| } | ||
| }) | ||
| .orElseGet(() -> otelBuildConfig.enabled()); | ||
| } | ||
| } | ||
| } |
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