From 14f932b06cffdec538cf8824f6cdc522496a525f Mon Sep 17 00:00:00 2001
From: syaojun <libevent@yeah.net>
Date: Wed, 4 Mar 2026 12:07:56 +0800
Subject: [PATCH 1/2] feat: add Spotless plugin configuration for code
 formatting in Maven

---
 .pre-commit-config.yaml |  9 +++++++++
 pom.xml                 | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 .pre-commit-config.yaml

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 000000000..a72573935
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,9 @@
+repos:
+  - repo: local
+    hooks:
+      - id: maven-spotless-check
+        name: Spotless check (Maven)
+        entry: bash -c 'mvn -DspotlessFiles=\"$@\" spotless:check' --
+        language: system
+        pass_filenames: true
+        files: "\\.java$"
diff --git a/pom.xml b/pom.xml
index 66d19baee..76fba71e8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -264,6 +264,43 @@
                 <artifactId>versions-maven-plugin</artifactId>
                 <version>2.8.1</version>
             </plugin>
+            <!-- spotless -->
+            <plugin>
+                <groupId>com.diffplug.spotless</groupId>
+                <artifactId>spotless-maven-plugin</artifactId>
+                <version>2.43.0</version>
+                <configuration>
+                    <java>
+                        <includes>
+                            <include>src/main/java/**/*.java</include>
+                            <include>src/test/java/**/*.java</include>
+                        </includes>
+                        <excludes>
+                            <exclude>**/generated/**/*</exclude>
+                            <exclude>**/proto/**/*</exclude>
+                        </excludes>
+                        <googleJavaFormat>
+                            <version>1.17.0</version>
+                            <style>GOOGLE</style>
+                            <reflowLongStrings>true</reflowLongStrings>
+                            <formatJavadoc>true</formatJavadoc>
+                        </googleJavaFormat>
+                        <importOrder>
+                            <order>java,javax,org,com,</order>
+                        </importOrder>
+                        <removeUnusedImports/>
+                        <formatAnnotations/>
+                    </java>
+                </configuration>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                        <phase>validate</phase>
+                    </execution>
+                </executions>
+            </plugin>
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>

From f3e95992aa8443349339a07681b5e0303932b730 Mon Sep 17 00:00:00 2001
From: syaojun <libevent@yeah.net>
Date: Fri, 6 Mar 2026 22:11:24 +0800
Subject: [PATCH 2/2] chore: add license in header

---
 .pre-commit-config.yaml | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a72573935..06a8f4cf8 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,3 +1,22 @@
+#  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.
+
+# See: https://cwiki.apache.org/confluence/display/INFRA/git+-+.asf.yaml+features
+
 repos:
   - repo: local
     hooks: