Add GenAI exception event extractor helper

Author: trask

instrumentation-api-incubator/src/main/java/io/opentelemetry/instrumentation/api/incubator/semconv/genai/GenAiExceptionEventExtractors.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.instrumentation.api.incubator.semconv.genai;
+
+import io.opentelemetry.api.logs.Severity;
+import io.opentelemetry.instrumentation.api.instrumenter.InstrumenterBuilder;
+import io.opentelemetry.instrumentation.api.internal.Experimental;
+
+/** Utilities for configuring GenAI exception events. */
+public final class GenAiExceptionEventExtractors {
+
+  /** Configures the GenAI client operation exception event name and severity. */
+  public static <REQUEST> void setGenAiClientExceptionEventExtractor(
+      InstrumenterBuilder<REQUEST, ?> builder) {
+    Experimental.setExceptionEventExtractor(
+        builder,
+        (logRecordBuilder, context, request) -> {
+          logRecordBuilder.setEventName("gen_ai.client.operation.exception");
+          logRecordBuilder.setSeverity(Severity.WARN);
+        });
+  }
+
+  private GenAiExceptionEventExtractors() {}
+}