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vy pushed a commit to branch release/2.25.2
in repository https://gitbox.apache.org/repos/asf/logging-log4j2.git
commit 3a57060b94acad5835ccaa726fabdc7565dccc95
Author: Ryan Schmitt <rschm...@apache.org>
AuthorDate: Thu Jul 24 06:30:19 2025 -0700
DefaultLayout: Append a newline to the serialized LogEvent (#3851)
Fixes #3835.
---
.../log4j/core/appender/DefaultLayoutTest.java | 50 ++++++++++++++++++++++
.../logging/log4j/core/config/DefaultLayout.java | 13 +++---
src/changelog/.2.x.x/3835-default-layout.xml | 12 ++++++
3 files changed, 69 insertions(+), 6 deletions(-)
diff --git
a/log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/DefaultLayoutTest.java
b/log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/DefaultLayoutTest.java
new file mode 100644
index 0000000000..9bfb563f1d
--- /dev/null
+++
b/log4j-core-test/src/test/java/org/apache/logging/log4j/core/appender/DefaultLayoutTest.java
@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.logging.log4j.core.appender;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import java.nio.charset.Charset;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.junit.jupiter.api.Test;
+
+class DefaultLayoutTest {
+ @Test
+ void testDefaultLayout() {
+ PrintStream standardOutput = System.out;
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+ System.setOut(new PrintStream(baos));
+ try {
+ Logger log = LogManager.getLogger(getClass());
+ log.fatal("This is a fatal message");
+ log.error("This is an error message");
+ log.warn("This is a warning message");
+
+ String actualOutput = new String(baos.toByteArray(),
Charset.defaultCharset());
+ assertTrue(actualOutput.contains("FATAL This is a fatal message" +
System.lineSeparator()));
+ assertTrue(actualOutput.contains("ERROR This is an error message"
+ System.lineSeparator()));
+ assertFalse(actualOutput.contains("This is a warning message"));
+ } finally {
+ System.setOut(standardOutput);
+ }
+ }
+}
diff --git
a/log4j-core/src/main/java/org/apache/logging/log4j/core/config/DefaultLayout.java
b/log4j-core/src/main/java/org/apache/logging/log4j/core/config/DefaultLayout.java
index 5aabbec39b..a425d9ac11 100644
---
a/log4j-core/src/main/java/org/apache/logging/log4j/core/config/DefaultLayout.java
+++
b/log4j-core/src/main/java/org/apache/logging/log4j/core/config/DefaultLayout.java
@@ -42,12 +42,13 @@ final class DefaultLayout implements StringLayout {
@Override
public String toSerializable(LogEvent event) {
return new StatusData(
- event.getSource(),
- event.getLevel(),
- event.getMessage(),
- event.getThrown(),
- event.getThreadName())
- .getFormattedStatus();
+ event.getSource(),
+ event.getLevel(),
+ event.getMessage(),
+ event.getThrown(),
+ event.getThreadName())
+ .getFormattedStatus()
+ + System.lineSeparator();
}
@Override
diff --git a/src/changelog/.2.x.x/3835-default-layout.xml
b/src/changelog/.2.x.x/3835-default-layout.xml
new file mode 100644
index 0000000000..877631c902
--- /dev/null
+++ b/src/changelog/.2.x.x/3835-default-layout.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entry xmlns="https://logging.apache.org/xml/ns";
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+ xsi:schemaLocation="
+ https://logging.apache.org/xml/ns
+ https://logging.apache.org/xml/ns/log4j-changelog-0.xsd";
+ type="fixed">
+ <issue id="3835"
link="https://github.com/apache/logging-log4j2/issues/3835"/>
+ <description format="asciidoc">
+ Fix missing newlines in default logging configuration for log4j-core.
+ </description>
+</entry>
