Add support for BatchLogRecordProcessor autoconfiguration

sdk-extensions/autoconfigure/README.md

@@ -11,8 +11,10 @@ environment variables, e.g., `OTEL_TRACES_EXPORTER=zipkin`.
 ## Contents
 
 * [General notes](#general-notes)
+* [Disabling OpenTelemetrySdk](#disabling-opentelemetrysdk)
 * [Exporters](#exporters)
   + [OTLP exporter (span, metric, and log exporters)](#otlp-exporter-span-metric-and-log-exporters)
+    + [OTLP exporter retry](#otlp-exporter-retry)
   + [Jaeger exporter](#jaeger-exporter)
   + [Zipkin exporter](#zipkin-exporter)
   + [Prometheus exporter](#prometheus-exporter)
@@ -23,8 +25,11 @@ environment variables, e.g., `OTEL_TRACES_EXPORTER=zipkin`.
   + [Disabling automatic ResourceProviders](#disabling-automatic-resourceproviders)
 * [Batch span processor](#batch-span-processor)
 * [Sampler](#sampler)
+* [Attribute limits](#attribute-limits)
 * [Span limits](#span-limits)
+* [Exemplars](#exemplars)
 * [Periodic Metric Reader](#periodic-metric-reader)
+* [Batch log record processor](#batch-log-record-processor)
 * [Customizing the OpenTelemetry SDK](#customizing-the-opentelemetry-sdk)
 
 ## General notes
@@ -276,6 +281,15 @@ These properties can be used to control the maximum size of spans by placing lim
 |-----------------------------|-----------------------------|----------------------------------------------------------------------------------------------|
 | otel.metric.export.interval | OTEL_METRIC_EXPORT_INTERVAL | The interval, in milliseconds, between the start of two export attempts. Default is `60000`. |
 
+## Batch log record processor
+
+| System property                 | Environment variable            | Description                                                                        |
+|---------------------------------|---------------------------------|------------------------------------------------------------------------------------|
+| otel.blrp.schedule.delay        | OTEL_BLRP_SCHEDULE_DELAY        | The interval, in milliseconds, between two consecutive exports. Default is `5000`. |
+| otel.blrp.max.queue.size        | OTEL_BLRP_MAX_QUEUE_SIZE        | The maximum queue size. Default is `2048`.                                         |
+| otel.blrp.max.export.batch.size | OTEL_BLRP_MAX_EXPORT_BATCH_SIZE | The maximum batch size. Default is `512`.                                          |
+| otel.blrp.export.timeout        | OTEL_BLRP_EXPORT_TIMEOUT        | The maximum allowed time, in milliseconds, to export data. Default is `30000`.     |
+
 ## Customizing the OpenTelemetry SDK
 
 Autoconfiguration exposes SPI [hooks](../autoconfigure-spi/src/main/java/io/opentelemetry/sdk/autoconfigure/spi) for customizing behavior programmatically as needed.

sdk-extensions/autoconfigure/build.gradle.kts

@@ -25,7 +25,7 @@ dependencies {
 
   annotationProcessor("com.google.auto.value:auto-value")
 
-  testImplementation(project(path = ":sdk:trace-shaded-deps"))
+  testImplementation(project(":sdk:trace-shaded-deps"))
 
   testImplementation(project(":sdk:testing"))
   testImplementation("com.linecorp.armeria:armeria-junit5")
@@ -86,6 +86,7 @@ testing {
         implementation(project(":exporters:zipkin"))
         implementation(project(":sdk-extensions:resources"))
         implementation(project(":sdk:testing"))
+        implementation(project(":sdk:trace-shaded-deps"))
         implementation(project(":semconv"))
 
         implementation("com.google.guava:guava")

sdk-extensions/autoconfigure/src/main/java/io/opentelemetry/sdk/autoconfigure/LoggerProviderConfiguration.java

@@ -14,8 +14,10 @@
 import io.opentelemetry.sdk.logs.LogRecordProcessor;
 import io.opentelemetry.sdk.logs.SdkLoggerProviderBuilder;
 import io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor;
+import io.opentelemetry.sdk.logs.export.BatchLogRecordProcessorBuilder;
 import io.opentelemetry.sdk.logs.export.LogRecordExporter;
 import io.opentelemetry.sdk.logs.export.SimpleLogRecordProcessor;
+import java.time.Duration;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -38,13 +40,15 @@ static void configureLoggerProvider(
         configureLogRecordExporters(
             config, serviceClassLoader, meterProvider, logRecordExporterCustomizer);
 
-    configureLogRecordProcessors(exportersByName, meterProvider)
+    configureLogRecordProcessors(config, exportersByName, meterProvider)
         .forEach(loggerProviderBuilder::addLogRecordProcessor);
   }
 
   // Visible for testing
   static List<LogRecordProcessor> configureLogRecordProcessors(
-      Map<String, LogRecordExporter> exportersByName, MeterProvider meterProvider) {
+      ConfigProperties config,
+      Map<String, LogRecordExporter> exportersByName,
+      MeterProvider meterProvider) {
     Map<String, LogRecordExporter> exportersByNameCopy = new HashMap<>(exportersByName);
     List<LogRecordProcessor> logRecordProcessors = new ArrayList<>();
 
@@ -57,14 +61,41 @@ static List<LogRecordProcessor> configureLogRecordProcessors(
       LogRecordExporter compositeLogRecordExporter =
           LogRecordExporter.composite(exportersByNameCopy.values());
       logRecordProcessors.add(
-          BatchLogRecordProcessor.builder(compositeLogRecordExporter)
-              .setMeterProvider(meterProvider)
-              .build());
+          configureBatchLogRecordProcessor(config, compositeLogRecordExporter, meterProvider));
     }
 
     return logRecordProcessors;
   }
 
+  // VisibleForTesting
+  static BatchLogRecordProcessor configureBatchLogRecordProcessor(
+      ConfigProperties config, LogRecordExporter exporter, MeterProvider meterProvider) {
+    BatchLogRecordProcessorBuilder builder =
+        BatchLogRecordProcessor.builder(exporter).setMeterProvider(meterProvider);
+
+    Duration scheduleDelay = config.getDuration("otel.blrp.schedule.delay");
+    if (scheduleDelay != null) {
+      builder.setScheduleDelay(scheduleDelay);
+    }
+
+    Integer maxQueue = config.getInt("otel.blrp.max.queue.size");
+    if (maxQueue != null) {
+      builder.setMaxQueueSize(maxQueue);
+    }
+
+    Integer maxExportBatch = config.getInt("otel.blrp.max.export.batch.size");
+    if (maxExportBatch != null) {
+      builder.setMaxExportBatchSize(maxExportBatch);
+    }
+
+    Duration timeout = config.getDuration("otel.blrp.export.timeout");
+    if (timeout != null) {
+      builder.setExporterTimeout(timeout);
+    }
+
+    return builder.build();
+  }
+
   // Visible for testing
   static LogLimits configureLogLimits(ConfigProperties config) {
     LogLimitsBuilder builder = LogLimits.builder();

sdk-extensions/autoconfigure/src/testFullConfig/java/io/opentelemetry/sdk/autoconfigure/LoggerProviderConfigurationTest.java

@@ -16,8 +16,11 @@
 import io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor;
 import io.opentelemetry.sdk.logs.export.LogRecordExporter;
 import io.opentelemetry.sdk.logs.export.SimpleLogRecordProcessor;
+import io.opentelemetry.sdk.trace.internal.JcTools;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.Map;
+import java.util.Queue;
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.TimeUnit;
 import org.junit.jupiter.api.Test;
@@ -73,10 +76,50 @@ void configureLogRecordProcessors_multipleExportersWithLogging() {
 
     assertThat(
             LoggerProviderConfiguration.configureLogRecordProcessors(
+                DefaultConfigProperties.createForTest(Collections.emptyMap()),
                 ImmutableMap.of("logging", loggingExporter, "otlp", otlpExporter),
                 MeterProvider.noop()))
         .hasSize(2)
         .hasAtLeastOneElementOfType(SimpleLogRecordProcessor.class)
         .hasAtLeastOneElementOfType(BatchLogRecordProcessor.class);
   }
+
+  @Test
+  void configureBatchLogRecordProcessor() {
+    Map<String, String> properties = new HashMap<>();
+    properties.put("otel.blrp.schedule.delay", "100000");
+    properties.put("otel.blrp.max.queue.size", "2");
+    properties.put("otel.blrp.max.export.batch.size", "3");
+    properties.put("otel.blrp.export.timeout", "4");
+
+    BatchLogRecordProcessor processor =
+        LoggerProviderConfiguration.configureBatchLogRecordProcessor(
+            DefaultConfigProperties.createForTest(properties),
+            SystemOutLogRecordExporter.create(),
+            MeterProvider.noop());
+
+    try {
+      assertThat(processor)
+          .extracting("worker")
+          .satisfies(
+              worker -> {
+                assertThat(worker)
+                    .extracting("scheduleDelayNanos")
+                    .isEqualTo(TimeUnit.MILLISECONDS.toNanos(100000));
+                assertThat(worker)
+                    .extracting("exporterTimeoutNanos")
+                    .isEqualTo(TimeUnit.MILLISECONDS.toNanos(4));
+                assertThat(worker).extracting("maxExportBatchSize").isEqualTo(3);
+                assertThat(worker)
+                    .extracting("queue")
+                    .isInstanceOfSatisfying(
+                        Queue.class, queue -> assertThat(JcTools.capacity(queue)).isEqualTo(2));
+                assertThat(worker)
+                    .extracting("logRecordExporter")
+                    .isInstanceOf(SystemOutLogRecordExporter.class);
+              });
+    } finally {
+      processor.shutdown();
+    }
+  }
 }