Add copyright check plug-in

Signed-off-by: Mark Thomas <markt@apache.org>

api/etc/config/copyright-exclude

@@ -0,0 +1 @@
+speclicense.html

api/etc/config/copyright.txt

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) YYYY Oracle and/or its affiliates and others.
+ * All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+

api/pom.xml

@@ -131,7 +131,30 @@
                     <compilerArgument>-Xlint:unchecked</compilerArgument>
                 </configuration>
             </plugin>
-
+
+            <!-- Checks copyright / license headers -->        
+            <plugin>
+                <groupId>org.glassfish.copyright</groupId>
+                <artifactId>glassfish-copyright-maven-plugin</artifactId>
+                <version>2.3</version>
+                <configuration>
+                    <excludeFile>etc/config/copyright-exclude</excludeFile>
+                    <!--svn|mercurial|git - defaults to svn-->
+                    <scm>git</scm>
+                    <!-- turn on/off debugging -->
+                    <debug>off</debug>
+                    <!-- skip files not under SCM-->
+                    <scmOnly>true</scmOnly>
+                    <!-- turn off warnings -->
+                    <warn>true</warn>
+                    <!-- for use with repair -->
+                    <update>false</update>
+                    <!-- check that year is correct -->
+                    <ignoreYear>false</ignoreYear>
+                    <templateFile>etc/config/copyright.txt</templateFile>
+                </configuration>
+            </plugin>
+
             <!-- Creates the OSGi MANIFEST.MF file -->        
             <plugin>
                 <groupId>org.apache.felix</groupId>
@@ -219,7 +242,7 @@
                             <bottom><![CDATA[
 Comments to: <a href="mailto:el-dev@eclipse.org">el-dev@eclipse.org</a>.<br>
 Copyright &#169; 2020 Eclipse Foundation. All rights reserved.<br>
-Use is subject to <a href="{@docRoot}/doc-files/speclicense.html" target="_top">license terms</a>.]]>
+Use is subject to <a href="{@docRoot}/doc-files/EFSL.html" target="_top">license terms</a>.]]>
                             </bottom>
                             <docfilessubdirs>true</docfilessubdirs>
                             <groups>