Use Synthetic bean for producing OpenTelemetry

extensions/opentelemetry/deployment/src/main/java/io/quarkus/opentelemetry/deployment/OpenTelemetryProcessor.java

@@ -9,13 +9,20 @@
 import java.util.Optional;
 import java.util.Set;
 
+import jakarta.enterprise.inject.Instance;
+import jakarta.inject.Singleton;
+
 import org.eclipse.microprofile.config.ConfigProvider;
 import org.eclipse.microprofile.config.ConfigValue;
 import org.jboss.jandex.AnnotationInstance;
 import org.jboss.jandex.AnnotationTarget;
 import org.jboss.jandex.AnnotationValue;
+import org.jboss.jandex.ClassType;
 import org.jboss.jandex.DotName;
+import org.jboss.jandex.ParameterizedType;
+import org.jboss.jandex.Type;
 
+import io.opentelemetry.api.OpenTelemetry;
 import io.opentelemetry.api.trace.SpanKind;
 import io.opentelemetry.exporter.otlp.internal.OtlpSpanExporterProvider;
 import io.opentelemetry.instrumentation.annotations.SpanAttribute;
@@ -31,6 +38,7 @@
 import io.quarkus.arc.deployment.AnnotationsTransformerBuildItem;
 import io.quarkus.arc.deployment.BeanContainerBuildItem;
 import io.quarkus.arc.deployment.InterceptorBindingRegistrarBuildItem;
+import io.quarkus.arc.deployment.SyntheticBeanBuildItem;
 import io.quarkus.arc.deployment.ValidationPhaseBuildItem.ValidationErrorBuildItem;
 import io.quarkus.arc.processor.AnnotationsTransformer;
 import io.quarkus.arc.processor.InterceptorBindingRegistrar;
@@ -49,10 +57,11 @@
 import io.quarkus.deployment.builditem.nativeimage.ServiceProviderBuildItem;
 import io.quarkus.deployment.util.ServiceUtil;
 import io.quarkus.maven.dependency.ArtifactKey;
+import io.quarkus.opentelemetry.OpenTelemetryDestroyer;
 import io.quarkus.opentelemetry.runtime.AutoConfiguredOpenTelemetrySdkBuilderCustomizer;
-import io.quarkus.opentelemetry.runtime.OpenTelemetryProducer;
 import io.quarkus.opentelemetry.runtime.OpenTelemetryRecorder;
 import io.quarkus.opentelemetry.runtime.QuarkusContextStorage;
+import io.quarkus.opentelemetry.runtime.config.runtime.OTelRuntimeConfig;
 import io.quarkus.opentelemetry.runtime.tracing.cdi.WithSpanInterceptor;
 import io.quarkus.opentelemetry.runtime.tracing.intrumentation.InstrumentationRecorder;
 import io.quarkus.runtime.LaunchMode;
@@ -73,14 +82,34 @@ public class OpenTelemetryProcessor {
     AdditionalBeanBuildItem ensureProducerIsRetained() {
         return AdditionalBeanBuildItem.builder()
                 .setUnremovable()
-                .addBeanClasses(OpenTelemetryProducer.class,
+                .addBeanClasses(
                         AutoConfiguredOpenTelemetrySdkBuilderCustomizer.ResourceCustomizer.class,
                         AutoConfiguredOpenTelemetrySdkBuilderCustomizer.SamplerCustomizer.class,
                         AutoConfiguredOpenTelemetrySdkBuilderCustomizer.TracerProviderCustomizer.class,
                         AutoConfiguredOpenTelemetrySdkBuilderCustomizer.TextMapPropagatorCustomizers.class)
                 .build();
     }
 
+    @BuildStep
+    @Record(ExecutionTime.RUNTIME_INIT)
+    SyntheticBeanBuildItem openTelemetryBean(OpenTelemetryRecorder recorder, OTelRuntimeConfig oTelRuntimeConfig) {
+        return SyntheticBeanBuildItem.configure(OpenTelemetry.class)
+                .defaultBean()
+                .setRuntimeInit()
+                .unremovable()
+                .scope(Singleton.class)
+                .addInjectionPoint(
+                        ParameterizedType.create(
+                                DotName.createSimple(Instance.class),
+                                new Type[] { ClassType.create(
+                                        DotName.createSimple(
+                                                AutoConfiguredOpenTelemetrySdkBuilderCustomizer.class.getName())) },
+                                null))
+                .createWith(recorder.opentelemetryBean(oTelRuntimeConfig))
+                .destroyer(OpenTelemetryDestroyer.class)
+                .done();
+    }
+
     @BuildStep
     void registerNativeImageResources(BuildProducer<ServiceProviderBuildItem> services,
             BuildProducer<RemovedResourceBuildItem> removedResources,

extensions/opentelemetry/runtime/src/main/java/io/quarkus/opentelemetry/OpenTelemetryDestroyer.java

@@ -0,0 +1,21 @@
+package io.quarkus.opentelemetry;
+
+import java.util.Map;
+
+import jakarta.enterprise.context.spi.CreationalContext;
+
+import io.opentelemetry.api.OpenTelemetry;
+import io.opentelemetry.sdk.OpenTelemetrySdk;
+import io.quarkus.arc.BeanDestroyer;
+
+public class OpenTelemetryDestroyer implements BeanDestroyer<OpenTelemetry> {
+    @Override
+    public void destroy(OpenTelemetry openTelemetry, CreationalContext<OpenTelemetry> creationalContext,
+            Map<String, Object> params) {
+        if (openTelemetry instanceof OpenTelemetrySdk) {
+            var openTelemetrySdk = ((OpenTelemetrySdk) openTelemetry);
+            openTelemetrySdk.getSdkTracerProvider().forceFlush();
+            openTelemetrySdk.getSdkTracerProvider().shutdown();
+        }
+    }
+}

extensions/opentelemetry/runtime/src/main/java/io/quarkus/opentelemetry/runtime/OpenTelemetryRecorder.java

@@ -1,12 +1,27 @@
 package io.quarkus.opentelemetry.runtime;
 
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Function;
 import java.util.function.Supplier;
 
+import jakarta.enterprise.inject.Instance;
+import jakarta.enterprise.util.TypeLiteral;
+
+import org.eclipse.microprofile.config.ConfigProvider;
+
 import io.opentelemetry.api.GlobalOpenTelemetry;
+import io.opentelemetry.api.OpenTelemetry;
 import io.opentelemetry.api.events.GlobalEventEmitterProvider;
 import io.opentelemetry.api.logs.GlobalLoggerProvider;
 import io.opentelemetry.context.ContextStorage;
+import io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk;
+import io.quarkus.arc.SyntheticCreationalContext;
+import io.quarkus.opentelemetry.runtime.config.runtime.OTelRuntimeConfig;
 import io.quarkus.runtime.annotations.Recorder;
+import io.smallrye.config.ConfigValue;
+import io.smallrye.config.NameIterator;
+import io.smallrye.config.SmallRyeConfig;
 import io.vertx.core.Vertx;
 
 @Recorder
@@ -31,4 +46,60 @@ public void storeVertxOnContextStorage(Supplier<Vertx> vertx) {
         QuarkusContextStorage.vertx = vertx.get();
     }
 
+    /* RUNTIME INIT */
+    public Function<SyntheticCreationalContext<OpenTelemetry>, OpenTelemetry> opentelemetryBean(
+            OTelRuntimeConfig oTelRuntimeConfig) {
+        return new Function<>() {
+            @Override
+            public OpenTelemetry apply(SyntheticCreationalContext<OpenTelemetry> context) {
+                Instance<AutoConfiguredOpenTelemetrySdkBuilderCustomizer> builderCustomizers = context
+                        .getInjectedReference(new TypeLiteral<>() {
+                        });
+
+                final Map<String, String> oTelConfigs = getOtelConfigs();
+
+                if (oTelRuntimeConfig.sdkDisabled()) {
+                    return AutoConfiguredOpenTelemetrySdk.builder()
+                            .setResultAsGlobal(true)
+                            .registerShutdownHook(false)
+                            .addPropertiesSupplier(() -> oTelConfigs)
+                            .build()
+                            .getOpenTelemetrySdk();
+                }
+
+                var builder = AutoConfiguredOpenTelemetrySdk.builder()
+                        .setResultAsGlobal(true)
+                        .registerShutdownHook(false)
+                        .addPropertiesSupplier(() -> oTelConfigs)
+                        .setServiceClassLoader(Thread.currentThread().getContextClassLoader());
+                for (var customizer : builderCustomizers) {
+                    customizer.customize(builder);
+                }
+
+                return builder.build().getOpenTelemetrySdk();
+            }
+
+            private Map<String, String> getOtelConfigs() {
+                Map<String, String> oTelConfigs = new HashMap<>();
+                SmallRyeConfig config = ConfigProvider.getConfig().unwrap(SmallRyeConfig.class);
+
+                // instruct OTel that we are using the AutoConfiguredOpenTelemetrySdk
+                oTelConfigs.put("otel.java.global-autoconfigure.enabled", "true");
+
+                // load new properties
+                for (String propertyName : config.getPropertyNames()) {
+                    if (propertyName.startsWith("quarkus.otel.")) {
+                        ConfigValue configValue = config.getConfigValue(propertyName);
+                        if (configValue.getValue() != null) {
+                            NameIterator name = new NameIterator(propertyName);
+                            name.next();
+                            oTelConfigs.put(name.getName().substring(name.getPosition() + 1), configValue.getValue());
+                        }
+                    }
+                }
+                return oTelConfigs;
+            }
+        };
+    }
+
 }

extensions/opentelemetry/runtime/src/main/java/io/quarkus/opentelemetry/runtime/exporter/otlp/RemoveableLateBoundBatchSpanProcessor.java

@@ -1,12 +1,10 @@
 package io.quarkus.opentelemetry.runtime.exporter.otlp;
 
-import io.quarkus.opentelemetry.runtime.OpenTelemetryProducer;
+import io.quarkus.opentelemetry.runtime.AutoConfiguredOpenTelemetrySdkBuilderCustomizer.TracerProviderCustomizer;
 
 /**
- * The only point in having this class is to allow {@link OpenTelemetryProducer}
+ * The only point in having this class is to allow {@link TracerProviderCustomizer}
  * to easily ignore the configured {@link LateBoundBatchSpanProcessor}.
- * <p>
- * In the future when {@link OpenTelemetryProducer} is replaced by a synthetic bean, this class will no longer be necessary
  */
 public final class RemoveableLateBoundBatchSpanProcessor extends LateBoundBatchSpanProcessor {