OpenTelemetry Logging

docs/src/main/asciidoc/opentelemetry-metrics.adoc

@@ -161,14 +161,14 @@ Also provides and OTel collector to receive the data.
 
 ==== Logging exporter
 
-You can output all metrics to the console by setting the exporter to `logging` in the `application.properties` file:
+You can output all metrics to the console by setting the exporter to `logs` in the `application.properties` file:
 [source, properties]
 ----
 quarkus.otel.metrics.exporter=logging <1>
 quarkus.otel.metric.export.interval=10000ms <2>
 ----
 
-<1> Set the exporter to `logging`.
+<1> Set the exporter to `logs`.
 Normally you don't need to set this.
 The default is `cdi`.
 <2> Set the interval to export the metrics.

docs/src/main/asciidoc/opentelemetry.adoc

@@ -273,17 +273,17 @@ implementation("io.opentelemetry:opentelemetry-exporter-logging")
 ----
 
 
-Then, setting the exporter to `logging` in the `application.properties` file:
+Then, setting the exporter to `logs` in the `application.properties` file:
 [source, properties]
 ----
 quarkus.otel.metrics.exporter=logging <1>
 quarkus.otel.metric.export.interval=10000ms <2>
 quarkus.otel.traces.exporter=logging <3>
 ----
 
-<1> Set the metrics exporter to `logging`. Normally you don't need to set this. The default is `cdi`.
+<1> Set the metrics exporter to `logs`. Normally you don't need to set this. The default is `cdi`.
 <2> Set the interval to export the metrics. The default is `1m`, which is too long for debugging.
-<3> Set the traces exporter to `logging`. Normally you don't need to set this. The default is `cdi`.
+<3> Set the traces exporter to `logs`. Normally you don't need to set this. The default is `cdi`.
 
 == Visualizing the data
 

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

@@ -23,14 +23,15 @@
 import org.jboss.jandex.Type;
 
 import io.opentelemetry.api.OpenTelemetry;
-import io.opentelemetry.api.trace.SpanKind;
+import io.opentelemetry.exporter.otlp.internal.OtlpLogRecordExporterProvider;
 import io.opentelemetry.exporter.otlp.internal.OtlpMetricExporterProvider;
 import io.opentelemetry.exporter.otlp.internal.OtlpSpanExporterProvider;
 import io.opentelemetry.instrumentation.annotations.AddingSpanAttributes;
 import io.opentelemetry.instrumentation.annotations.WithSpan;
 import io.opentelemetry.sdk.autoconfigure.spi.AutoConfigurationCustomizerProvider;
 import io.opentelemetry.sdk.autoconfigure.spi.ConfigurablePropagatorProvider;
 import io.opentelemetry.sdk.autoconfigure.spi.ResourceProvider;
+import io.opentelemetry.sdk.autoconfigure.spi.logs.ConfigurableLogRecordExporterProvider;
 import io.opentelemetry.sdk.autoconfigure.spi.metrics.ConfigurableMetricExporterProvider;
 import io.opentelemetry.sdk.autoconfigure.spi.traces.ConfigurableSamplerProvider;
 import io.opentelemetry.sdk.autoconfigure.spi.traces.ConfigurableSpanExporterProvider;
@@ -86,7 +87,6 @@ public boolean test(AnnotationInstance annotationInstance) {
             return annotationInstance.name().equals(ADD_SPAN_ATTRIBUTES);
         }
     };
-    private static final DotName SPAN_KIND = DotName.createSimple(SpanKind.class.getName());
     private static final DotName WITH_SPAN_INTERCEPTOR = DotName.createSimple(WithSpanInterceptor.class.getName());
     private static final DotName ADD_SPAN_ATTRIBUTES_INTERCEPTOR = DotName
             .createSimple(AddingSpanAttributesInterceptor.class.getName());
@@ -163,10 +163,30 @@ void handleServices(OTelBuildConfig config,
                     Set.of("META-INF/services/io.opentelemetry.sdk.autoconfigure.spi.metrics.ConfigurableMetricExporterProvider")));
         }
 
+        final List<String> logRecordExporterProviders = ServiceUtil.classNamesNamedIn(
+                Thread.currentThread().getContextClassLoader(),
+                SPI_ROOT + ConfigurableLogRecordExporterProvider.class.getName())
+                .stream()
+                .filter(p -> !OtlpLogRecordExporterProvider.class.getName().equals(p))
+                .collect(toList()); // filter out OtlpLogRecordExporterProvider since it depends on OkHttp
+        if (!logRecordExporterProviders.isEmpty()) {
+            services.produce(
+                    new ServiceProviderBuildItem(ConfigurableLogRecordExporterProvider.class.getName(),
+                            logRecordExporterProviders));
+        }
+        if (config.logs().exporter().stream().noneMatch(ExporterType.Constants.OTLP_VALUE::equals)) {
+            removedResources.produce(new RemovedResourceBuildItem(
+                    ArtifactKey.fromString("io.opentelemetry:opentelemetry-exporter-otlp"),
+                    Set.of("META-INF/services/io.opentelemetry.sdk.autoconfigure.spi.logs.ConfigurableLogRecordExporterProvider")));
+        }
+
+        // TODO these classes don't exist!
         runtimeReinitialized.produce(
                 new RuntimeReinitializedClassBuildItem("io.opentelemetry.sdk.autoconfigure.TracerProviderConfiguration"));
         runtimeReinitialized.produce(
                 new RuntimeReinitializedClassBuildItem("io.opentelemetry.sdk.autoconfigure.MeterProviderConfiguration"));
+        runtimeReinitialized.produce(
+                new RuntimeReinitializedClassBuildItem("io.opentelemetry.sdk.autoconfigure.LogMeterProviderConfiguration"));
 
         services.produce(ServiceProviderBuildItem.allProvidersFromClassPath(
                 ConfigurableSamplerProvider.class.getName()));

extensions/opentelemetry/deployment/src/main/java/io/quarkus/opentelemetry/deployment/exporter/otlp/OtlpExporterProcessor.java

@@ -13,6 +13,7 @@
 import org.jboss.jandex.ParameterizedType;
 import org.jboss.jandex.Type;
 
+import io.opentelemetry.sdk.logs.export.LogRecordExporter;
 import io.opentelemetry.sdk.metrics.export.MetricExporter;
 import io.opentelemetry.sdk.trace.SpanProcessor;
 import io.opentelemetry.sdk.trace.export.SpanExporter;
@@ -34,6 +35,7 @@
 public class OtlpExporterProcessor {
 
     private static final DotName METRIC_EXPORTER = DotName.createSimple(MetricExporter.class.getName());
+    private static final DotName LOG_RECORD_EXPORTER = DotName.createSimple(LogRecordExporter.class.getName());
 
     static class OtlpTracingExporterEnabled implements BooleanSupplier {
         OtlpExporterBuildConfig exportBuildConfig;
@@ -59,6 +61,18 @@ public boolean getAsBoolean() {
         }
     }
 
+    static class OtlpLogRecordExporterEnabled implements BooleanSupplier {
+        OtlpExporterBuildConfig exportBuildConfig;
+        OTelBuildConfig otelBuildConfig;
+
+        public boolean getAsBoolean() {
+            return otelBuildConfig.enabled() &&
+                    otelBuildConfig.logs().enabled().orElse(Boolean.TRUE) &&
+                    otelBuildConfig.logs().exporter().contains(CDI_VALUE) &&
+                    exportBuildConfig.enabled();
+        }
+    }
+
     @SuppressWarnings("deprecation")
     @BuildStep(onlyIf = OtlpExporterProcessor.OtlpTracingExporterEnabled.class)
     @Record(ExecutionTime.RUNTIME_INIT)
@@ -123,4 +137,41 @@ void createMetricsExporterProcessor(
                         vertxBuildItem.getVertx()))
                 .done());
     }
+
+    @BuildStep(onlyIf = OtlpLogRecordExporterEnabled.class)
+    @Record(ExecutionTime.RUNTIME_INIT)
+    @Consume(TlsRegistryBuildItem.class)
+    void createLogRecordExporterProcessor(
+            BeanDiscoveryFinishedBuildItem beanDiscovery,
+            OTelExporterRecorder recorder,
+            List<ExternalOtelExporterBuildItem> externalOtelExporterBuildItem,
+            OTelRuntimeConfig otelRuntimeConfig,
+            OtlpExporterRuntimeConfig exporterRuntimeConfig,
+            CoreVertxBuildItem vertxBuildItem,
+            BuildProducer<SyntheticBeanBuildItem> syntheticBeanBuildItemBuildProducer) {
+
+        if (!externalOtelExporterBuildItem.isEmpty()) {
+            // if there is an external exporter, we don't want to create the default one.
+            // External exporter also use synthetic beans. However, synthetic beans don't show in the BeanDiscoveryFinishedBuildItem
+            return;
+        }
+
+        if (!beanDiscovery.beanStream().withBeanType(LOG_RECORD_EXPORTER).isEmpty()) {
+            // if there is a MetricExporter bean impl around, we don't want to create the default one
+            return;
+        }
+
+        syntheticBeanBuildItemBuildProducer.produce(SyntheticBeanBuildItem
+                .configure(LogRecordExporter.class)
+                .types(LogRecordExporter.class)
+                .setRuntimeInit()
+                .scope(Singleton.class)
+                .unremovable()
+                .addInjectionPoint(ParameterizedType.create(DotName.createSimple(Instance.class),
+                        new Type[] { ClassType.create(DotName.createSimple(LogRecordExporter.class.getName())) }, null))
+                .addInjectionPoint(ClassType.create(DotName.createSimple(TlsConfigurationRegistry.class)))
+                .createWith(recorder.createLogRecordExporter(otelRuntimeConfig, exporterRuntimeConfig,
+                        vertxBuildItem.getVertx()))
+                .done());
+    }
 }

extensions/opentelemetry/deployment/src/main/java/io/quarkus/opentelemetry/deployment/logging/LogHandlerProcessor.java

@@ -0,0 +1,17 @@
+package io.quarkus.opentelemetry.deployment.logging;
+
+import io.quarkus.deployment.annotations.BuildStep;
+import io.quarkus.deployment.annotations.ExecutionTime;
+import io.quarkus.deployment.annotations.Record;
+import io.quarkus.deployment.builditem.LogHandlerBuildItem;
+import io.quarkus.opentelemetry.runtime.logs.OpenTelemetryLogConfig;
+import io.quarkus.opentelemetry.runtime.logs.OpenTelemetryLogRecorder;
+
+class LogHandlerProcessor {
+
+    @BuildStep
+    @Record(ExecutionTime.RUNTIME_INIT)
+    LogHandlerBuildItem build(OpenTelemetryLogRecorder recorder, OpenTelemetryLogConfig config) {
+        return new LogHandlerBuildItem(recorder.initializeHandler(config));
+    }
+}

extensions/opentelemetry/runtime/src/main/java/io/quarkus/opentelemetry/runtime/config/build/LogsBuildConfig.java

@@ -0,0 +1,27 @@
+package io.quarkus.opentelemetry.runtime.config.build;
+
+import static io.quarkus.opentelemetry.runtime.config.build.ExporterType.Constants.CDI_VALUE;
+
+import java.util.List;
+import java.util.Optional;
+
+import io.smallrye.config.WithDefault;
+
+public interface LogsBuildConfig {
+    /**
+     * Enable logs with OpenTelemetry.
+     * <p>
+     * This property is not available in the Open Telemetry SDK. It's Quarkus specific.
+     * <p>
+     * Support for logs will be enabled if OpenTelemetry support is enabled
+     * and either this value is true, or this value is unset.
+     */
+    @WithDefault("false")
+    Optional<Boolean> enabled();
+
+    /**
+     * The Logs exporter to use.
+     */
+    @WithDefault(CDI_VALUE)
+    List<String> exporter();
+}

extensions/opentelemetry/runtime/src/main/java/io/quarkus/opentelemetry/runtime/config/build/OTelBuildConfig.java

@@ -48,6 +48,11 @@ public interface OTelBuildConfig {
      */
     MetricsBuildConfig metrics();
 
+    /**
+     * Logs exporter configurations.
+     */
+    LogsBuildConfig logs();
+
     /**
      * No Log exporter for now.
      */

extensions/opentelemetry/runtime/src/main/java/io/quarkus/opentelemetry/runtime/config/runtime/exporter/OtlpExporterLogsConfig.java

@@ -0,0 +1,7 @@
+package io.quarkus.opentelemetry.runtime.config.runtime.exporter;
+
+import io.quarkus.runtime.annotations.ConfigGroup;
+
+@ConfigGroup
+public interface OtlpExporterLogsConfig extends OtlpExporterConfig {
+}

extensions/opentelemetry/runtime/src/main/java/io/quarkus/opentelemetry/runtime/config/runtime/exporter/OtlpExporterRuntimeConfig.java

@@ -22,7 +22,11 @@ public interface OtlpExporterRuntimeConfig extends OtlpExporterConfig {
      * OTLP metrics exporter configuration.
      */
     OtlpExporterMetricsConfig metrics();
-    // TODO logs();
+
+    /**
+     * OTLP logs exporter configuration.
+     */
+    OtlpExporterLogsConfig logs();
     // TODO additional global exporter configuration
 
 }

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

@@ -22,10 +22,12 @@
 import io.opentelemetry.exporter.internal.ExporterBuilderUtil;
 import io.opentelemetry.exporter.internal.grpc.GrpcExporter;
 import io.opentelemetry.exporter.internal.http.HttpExporter;
+import io.opentelemetry.exporter.internal.otlp.logs.LogsRequestMarshaler;
 import io.opentelemetry.exporter.internal.otlp.metrics.MetricsRequestMarshaler;
 import io.opentelemetry.exporter.internal.otlp.traces.TraceRequestMarshaler;
 import io.opentelemetry.exporter.otlp.internal.OtlpUserAgent;
 import io.opentelemetry.sdk.autoconfigure.spi.ConfigurationException;
+import io.opentelemetry.sdk.logs.export.LogRecordExporter;
 import io.opentelemetry.sdk.metrics.Aggregation;
 import io.opentelemetry.sdk.metrics.InstrumentType;
 import io.opentelemetry.sdk.metrics.export.AggregationTemporalitySelector;
@@ -37,11 +39,10 @@
 import io.opentelemetry.sdk.trace.export.SpanExporter;
 import io.quarkus.arc.SyntheticCreationalContext;
 import io.quarkus.opentelemetry.runtime.config.runtime.OTelRuntimeConfig;
-import io.quarkus.opentelemetry.runtime.config.runtime.exporter.CompressionType;
-import io.quarkus.opentelemetry.runtime.config.runtime.exporter.OtlpExporterConfig;
-import io.quarkus.opentelemetry.runtime.config.runtime.exporter.OtlpExporterMetricsConfig;
-import io.quarkus.opentelemetry.runtime.config.runtime.exporter.OtlpExporterRuntimeConfig;
-import io.quarkus.opentelemetry.runtime.config.runtime.exporter.OtlpExporterTracesConfig;
+import io.quarkus.opentelemetry.runtime.config.runtime.exporter.*;
+import io.quarkus.opentelemetry.runtime.exporter.otlp.logs.NoopLogRecordExporter;
+import io.quarkus.opentelemetry.runtime.exporter.otlp.logs.VertxGrpcLogRecordExporter;
+import io.quarkus.opentelemetry.runtime.exporter.otlp.logs.VertxHttpLogRecordExporter;
 import io.quarkus.opentelemetry.runtime.exporter.otlp.metrics.NoopMetricExporter;
 import io.quarkus.opentelemetry.runtime.exporter.otlp.metrics.VertxGrpcMetricExporter;
 import io.quarkus.opentelemetry.runtime.exporter.otlp.metrics.VertxHttpMetricsExporter;
@@ -196,7 +197,7 @@ public MetricExporter apply(SyntheticCreationalContext<MetricExporter> context)
                     OtlpExporterMetricsConfig metricsConfig = exporterRuntimeConfig.metrics();
                     if (metricsConfig.protocol().isEmpty()) {
                         throw new IllegalStateException("No OTLP protocol specified. " +
-                                "Please check `quarkus.otel.exporter.otlp.traces.protocol` property");
+                                "Please check `quarkus.otel.exporter.otlp.metrics.protocol` property");
                     }
 
                     String protocol = metricsConfig.protocol().get();
@@ -237,7 +238,7 @@ public MetricExporter apply(SyntheticCreationalContext<MetricExporter> context)
                                 aggregationResolver(metricsConfig));
                     } else {
                         throw new IllegalArgumentException(String.format("Unsupported OTLP protocol %s specified. " +
-                                "Please check `quarkus.otel.exporter.otlp.traces.protocol` property", protocol));
+                                "Please check `quarkus.otel.exporter.otlp.metrics.protocol` property", protocol));
                     }
 
                 } catch (IllegalArgumentException iae) {
@@ -248,6 +249,74 @@ public MetricExporter apply(SyntheticCreationalContext<MetricExporter> context)
         };
     }
 
+    public Function<SyntheticCreationalContext<LogRecordExporter>, LogRecordExporter> createLogRecordExporter(
+            OTelRuntimeConfig otelRuntimeConfig, OtlpExporterRuntimeConfig exporterRuntimeConfig, Supplier<Vertx> vertx) {
+        final URI baseUri = getMetricsUri(exporterRuntimeConfig);
+
+        return new Function<>() {
+            @Override
+            public LogRecordExporter apply(SyntheticCreationalContext<LogRecordExporter> context) {
+
+                if (otelRuntimeConfig.sdkDisabled() || baseUri == null) {
+                    return NoopLogRecordExporter.INSTANCE;
+                }
+
+                LogRecordExporter logRecordExporter;
+
+                try {
+                    TlsConfigurationRegistry tlsConfigurationRegistry = context
+                            .getInjectedReference(TlsConfigurationRegistry.class);
+                    OtlpExporterLogsConfig logsConfig = exporterRuntimeConfig.logs();
+                    if (logsConfig.protocol().isEmpty()) {
+                        throw new IllegalStateException("No OTLP protocol specified. " +
+                                "Please check `quarkus.otel.exporter.otlp.logs.protocol` property");
+                    }
+
+                    String protocol = logsConfig.protocol().get();
+                    if (GRPC.equals(protocol)) {
+                        logRecordExporter = new VertxGrpcLogRecordExporter(
+                                new GrpcExporter<LogsRequestMarshaler>(
+                                        OTLP_VALUE, // use the same as OTel does
+                                        "log", // use the same as OTel does
+                                        new VertxGrpcSender(
+                                                baseUri,
+                                                VertxGrpcSender.GRPC_LOG_SERVICE_NAME,
+                                                determineCompression(logsConfig),
+                                                logsConfig.timeout(),
+                                                populateTracingExportHttpHeaders(logsConfig),
+                                                new HttpClientOptionsConsumer(logsConfig, baseUri, tlsConfigurationRegistry),
+                                                vertx.get()),
+                                        MeterProvider::noop));
+                    } else if (HTTP_PROTOBUF.equals(protocol)) {
+                        boolean exportAsJson = false; //TODO: this will be enhanced in the future
+                        logRecordExporter = new VertxHttpLogRecordExporter(
+                                new HttpExporter<LogsRequestMarshaler>(
+                                        OTLP_VALUE, // use the same as OTel does
+                                        "log", // use the same as OTel does
+                                        new VertxHttpSender(
+                                                baseUri,
+                                                VertxHttpSender.LOGS_PATH,
+                                                determineCompression(logsConfig),
+                                                logsConfig.timeout(),
+                                                populateTracingExportHttpHeaders(logsConfig),
+                                                exportAsJson ? "application/json" : "application/x-protobuf",
+                                                new HttpClientOptionsConsumer(logsConfig, baseUri, tlsConfigurationRegistry),
+                                                vertx.get()),
+                                        MeterProvider::noop,
+                                        exportAsJson));
+                    } else {
+                        throw new IllegalArgumentException(String.format("Unsupported OTLP protocol %s specified. " +
+                                "Please check `quarkus.otel.exporter.otlp.logs.protocol` property", protocol));
+                    }
+
+                } catch (IllegalArgumentException iae) {
+                    throw new IllegalStateException("Unable to install OTLP Exporter", iae);
+                }
+                return logRecordExporter;
+            }
+        };
+    }
+
     private static DefaultAggregationSelector aggregationResolver(OtlpExporterMetricsConfig metricsConfig) {
         String defaultHistogramAggregation = metricsConfig.defaultHistogramAggregation()
                 .map(s -> s.toLowerCase(Locale.ROOT))