Update to license-maven-plugin:4.1

CONTRIBUTING.md

@@ -98,12 +98,46 @@ Source Code Style
 -----------------
 
 Please follow the style used by the existing code in the repository.
-
 Rules are enforced by [checkstyle](src/checkstyle/checkstyle.xml).
 
+Java source files must include the following header at the top of the file, before the _package_ declaration:
+
+```
+/*
+ * Copyright 2013-${year} the original author or authors.
+ *
+ * Licensed 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.
+ */
+```
+
+The project makes use of the great https://github.com/mathieucarbou/license-maven-plugin[Mycila Maven License Plugin] to check for the presence of a valid header in source files during the build process.
+
+You can manually check your source files by invoking the plugin manually on the command line as follows:
+
+```
+mvn license:check
+```
+
+You can also ask the plugin to automatically update the header for you like this:
+
+```
+mvn license:format
+```
+
 
 License
 -------
 
 By contributing, you agree that the contributions will be licensed under the
 [Apache License 2.0](https://github.com/logstash/logstash-logback-encoder/blob/main/LICENSE).
+

license-header.txt

@@ -1,3 +1,5 @@
+Copyright 2013-${year} the original author or authors.
+
 Licensed 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

pom.xml

@@ -9,6 +9,7 @@
     <name>Logstash Logback Encoder</name>
     <description>Provides logback encoders, layouts, and appenders to log in JSON and other formats supported by Jackson</description>
     <url>https://github.com/logstash/logstash-logback-encoder</url>
+    <inceptionYear>2013</inceptionYear>
 
     <scm>
         <url>https://github.com/logstash/logstash-logback-encoder</url>
@@ -36,15 +37,14 @@
 
         <!-- maven plugins -->
         <animal-sniffer-maven-plugin.version>1.20</animal-sniffer-maven-plugin.version>
-        <lifecycle-mapping.version>1.0.0</lifecycle-mapping.version>
+        <license-maven-plugin.version>4.1</license-maven-plugin.version>
         <maven-bundle-plugin.version>5.1.2</maven-bundle-plugin.version>
         <maven-checkstyle-plugin.version>3.1.2</maven-checkstyle-plugin.version>
         <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
         <maven-enforcer-plugin.version>1.4.1</maven-enforcer-plugin.version>
         <maven-gpg-plugin.version>3.0.1</maven-gpg-plugin.version>
         <maven-jar-plugin.version>3.2.0</maven-jar-plugin.version>
         <maven-javadoc-plugin.version>3.3.0</maven-javadoc-plugin.version>
-        <maven-license-plugin.version>1.9.0</maven-license-plugin.version>
         <maven-release-plugin.version>2.5.3</maven-release-plugin.version>
         <maven-shade-plugin.version>3.2.4</maven-shade-plugin.version>
         <maven-source-plugin.version>3.2.1</maven-source-plugin.version>
@@ -268,26 +268,13 @@
                 <version>${maven-release-plugin.version}</version>
             </plugin>
             <plugin>
-                <groupId>com.mycila.maven-license-plugin</groupId>
-                <artifactId>maven-license-plugin</artifactId>
-                <version>${maven-license-plugin.version}</version>
-                <configuration>
-                    <header>license-header.txt</header>
-                    <strictCheck>true</strictCheck>
-                    <aggregate>true</aggregate>
-                    <encoding>UTF-8</encoding>
-                    <failIfMissing>true</failIfMissing>
-                    <skipExistingHeaders>true</skipExistingHeaders>
-                    <includes>
-                        <include>**/src/main/java/**</include>
-                        <include>**/src/test/java/**</include>
-                    </includes>
-                </configuration>
+                <groupId>com.mycila</groupId>
+                <artifactId>license-maven-plugin</artifactId>
                 <executions>
                     <execution>
                         <phase>process-sources</phase>
                         <goals>
-                            <goal>format</goal>
+                            <goal>check</goal>
                         </goals>
                     </execution>
                 </executions>
@@ -421,31 +408,22 @@
                     </dependencies>
                 </plugin>
 
-                <!-- This plugin's configuration is used to store Eclipse m2e settings only. 
-                     It has no influence on the Maven build itself.
-                -->
                 <plugin>
-                    <groupId>org.eclipse.m2e</groupId>
-                    <artifactId>lifecycle-mapping</artifactId>
-                    <version>${lifecycle-mapping.version}</version>
+                    <groupId>com.mycila</groupId>
+                    <artifactId>license-maven-plugin</artifactId>
+                    <version>${license-maven-plugin.version}</version>
                     <configuration>
-                        <lifecycleMappingMetadata>
-                            <pluginExecutions>
-                                <pluginExecution>
-                                    <pluginExecutionFilter>
-                                        <groupId>com.mycila.maven-license-plugin</groupId>
-                                        <artifactId>maven-license-plugin</artifactId>
-                                        <versionRange>[1.9.0,)</versionRange>
-                                        <goals>
-                                            <goal>format</goal>
-                                        </goals>
-                                    </pluginExecutionFilter>
-                                    <action>
-                                        <ignore></ignore>
-                                    </action>
-                                </pluginExecution>
-                            </pluginExecutions>
-                        </lifecycleMappingMetadata>
+                        <header>license-header.txt</header>
+                        <mapping>
+                            <java>SLASHSTAR_STYLE</java>
+                        </mapping>
+                        <includes>
+                            <include>src/main/java/**</include>
+                            <include>src/test/java/**</include>
+                        </includes>
+                        <defaultProperties>
+                            <year>2021</year>
+                        </defaultProperties>
                     </configuration>
                 </plugin>
             </plugins>

src/checkstyle/checkstyle.xml

@@ -85,6 +85,6 @@
         <module name="UpperEll"/>
     </module>
     <module name="RegexpHeader">
-        <property name="header" value="^/\*\*\n^ \* Licensed under the Apache License, Version 2\.0 \(the &quot;License&quot;\);"/>
+        <property name="header" value="^/\*\n^ \* Copyright .* the original author or authors\.\n^ *\n^ \* Licensed under the Apache License, Version 2\.0 \(the &quot;License&quot;\);"/>
     </module>
 </module>

src/main/java/net/logstash/logback/CachingAbbreviator.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/LogstashAccessFormatter.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/LogstashFormatter.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/NullAbbreviator.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/AbstractLogstashTcpSocketAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/AbstractLogstashUdpSocketAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/AccessEventAsyncDisruptorAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/AsyncDisruptorAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/DelegatingAsyncDisruptorAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/LoggingEventAsyncDisruptorAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/LogstashAccessTcpSocketAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/LogstashAccessUdpSocketAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/LogstashTcpSocketAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/LogstashUdpSocketAppender.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/NotConnectedException.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/RingBufferFullException.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/ShutdownInProgressException.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/WaitStrategyFactory.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/destination/DelegateDestinationConnectionStrategy.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/destination/DestinationConnectionStrategy.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/destination/DestinationConnectionStrategyWithTtl.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/destination/DestinationParser.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/destination/PreferPrimaryDestinationConnectionStrategy.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/destination/RandomDestinationConnectionStrategy.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/destination/RoundRobinDestinationConnectionStrategy.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/listener/AccessEventAppenderListenerImpl.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/listener/AccessEventTcpAppenderListenerImpl.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/listener/AppenderListener.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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

src/main/java/net/logstash/logback/appender/listener/FailureSummaryAppenderListener.java

@@ -1,4 +1,6 @@
-/**
+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
  * Licensed 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