From f65546a23a2fbd404b9c5149ca400b62744bf0b3 Mon Sep 17 00:00:00 2001
From: Eunbin Son <thswlsqls@naver.com>
Date: Mon, 10 Aug 2026 09:22:16 +0900
Subject: [PATCH] Output severity text in SystemOutLogRecordExporter

---
 .../logging/SystemOutLogRecordExporter.java   |  4 +++
 .../SystemOutLogRecordExporterTest.java       | 28 +++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/exporters/logging/src/main/java/io/opentelemetry/exporter/logging/SystemOutLogRecordExporter.java b/exporters/logging/src/main/java/io/opentelemetry/exporter/logging/SystemOutLogRecordExporter.java
index 34cbbc91f2c..6ffc2a6f64b 100644
--- a/exporters/logging/src/main/java/io/opentelemetry/exporter/logging/SystemOutLogRecordExporter.java
+++ b/exporters/logging/src/main/java/io/opentelemetry/exporter/logging/SystemOutLogRecordExporter.java
@@ -65,6 +65,7 @@ public CompletableResultCode flush() {
   static void formatLog(StringBuilder stringBuilder, LogRecordData log) {
     InstrumentationScopeInfo instrumentationScopeInfo = log.getInstrumentationScopeInfo();
     Value<?> body = log.getBodyValue();
+    String severityText = log.getSeverityText();
     String eventName = log.getEventName();
     stringBuilder
         .append(
@@ -73,6 +74,9 @@ static void formatLog(StringBuilder stringBuilder, LogRecordData log) {
                     .atZone(ZoneOffset.UTC)))
         .append(" ")
         .append(log.getSeverity());
+    if (severityText != null && !severityText.isEmpty()) {
+      stringBuilder.append(" [severityText: ").append(severityText).append("]");
+    }
     if (eventName != null && !eventName.isEmpty()) {
       stringBuilder.append(" [eventName: ").append(eventName).append("]");
     }
diff --git a/exporters/logging/src/test/java/io/opentelemetry/exporter/logging/SystemOutLogRecordExporterTest.java b/exporters/logging/src/test/java/io/opentelemetry/exporter/logging/SystemOutLogRecordExporterTest.java
index 44f24dee00c..a939a797c25 100644
--- a/exporters/logging/src/test/java/io/opentelemetry/exporter/logging/SystemOutLogRecordExporterTest.java
+++ b/exporters/logging/src/test/java/io/opentelemetry/exporter/logging/SystemOutLogRecordExporterTest.java
@@ -53,6 +53,34 @@ void format() {
                 + "map=KeyValueList{{\"nested\":\"value\"}}}");
   }
 
+  @Test
+  void formatWithSeverityText() {
+    long timestamp =
+        LocalDateTime.of(1970, Month.AUGUST, 7, 10, 0).toInstant(ZoneOffset.UTC).toEpochMilli();
+    LogRecordData log =
+        TestLogRecordData.builder()
+            .setResource(Resource.empty())
+            .setInstrumentationScopeInfo(
+                InstrumentationScopeInfo.builder("logTest").setVersion("1.0").build())
+            .setBody("message")
+            .setSeverity(Severity.ERROR3)
+            .setSeverityText("SEVERE")
+            .setTimestamp(timestamp, TimeUnit.MILLISECONDS)
+            .setSpanContext(
+                SpanContext.create(
+                    "00000000000000010000000000000002",
+                    "0000000000000003",
+                    TraceFlags.getDefault(),
+                    TraceState.getDefault()))
+            .build();
+    StringBuilder output = new StringBuilder();
+    SystemOutLogRecordExporter.formatLog(output, log);
+    assertThat(output.toString())
+        .isEqualTo(
+            "1970-08-07T10:00:00Z ERROR3 [severityText: SEVERE] 'message' : "
+                + "00000000000000010000000000000002 0000000000000003 [scopeInfo: logTest:1.0] {}");
+  }
+
   @Test
   void formatWithEventName() {
     long timestamp =