René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"NullPointerException in DefaultThirdPartyTool#getProjectsWithNoLicense(...) after upgrade from 2.1.0 to 2.2.0","articleBody":"Hi,\r\n\r\nwe are trying to upgrade from `2.1.0` to `2.2.0` in our project.\r\n\r\nCurrently, we use \r\n\r\n```bash\r\nmvn license:aggregate-add-third-party@generate-and-check-licenses -Dlicense.skipAggregateAddThirdParty=false -Dlicense.thirdPartyFilename=DEPENDENCY-LICENSES -Dlicense.outputDirectory=target\r\n```\r\nin a CI env with a config as follows\r\n\r\n```bash\r\n   \u003cplugin>\r\n                        \u003cgroupId>org.codehaus.mojo\u003c/groupId>\r\n                        \u003cartifactId>license-maven-plugin\u003c/artifactId>\r\n                        \u003cinherited>false\u003c/inherited>\r\n                        \u003cconfiguration>\r\n                            \u003cmissingFile>${project.basedir}/THIRD-PARTY.properties\u003c/missingFile>\r\n                            \u003caggregateMissingLicensesFile>${project.basedir}/THIRD-PARTY.properties\u003c/aggregateMissingLicensesFile>\r\n                        \u003c/configuration>\r\n                        \u003cexecutions>\r\n                            \u003cexecution>\r\n                                \u003cid>generate-and-check-licenses\u003c/id>\r\n                                \u003cgoals>\r\n                                    \u003cgoal>aggregate-add-third-party\u003c/goal>\r\n                                \u003c/goals>\r\n                            \u003c/execution>\r\n                            \u003cexecution>\r\n                                \u003cid>download-licenses\u003c/id>\r\n                                \u003cgoals>\r\n                                    \u003cgoal>aggregate-download-licenses\u003c/goal>\r\n                                \u003c/goals>\r\n                            \u003c/execution>\r\n                        \u003c/executions>\r\n                    \u003c/plugin>\r\n```\r\nand\r\n\r\n\r\n```bash\r\n   \u003cplugin>\r\n                    \u003cgroupId>org.codehaus.mojo\u003c/groupId>\r\n                    \u003cartifactId>license-maven-plugin\u003c/artifactId>\r\n                    \u003cversion>${maven.mojo.license.plugin}\u003c/version>\r\n                    \u003cconfiguration>\r\n                        \u003cuseMissingFile>true\u003c/useMissingFile>\r\n                        \u003cfailOnMissing>true\u003c/failOnMissing>\r\n                        \u003cincludeTransitiveDependencies>true\u003c/includeTransitiveDependencies>\r\n                        \u003cfileTemplate>/org/codehaus/mojo/license/third-party-file-groupByMultiLicense.ftl\r\n                        \u003c/fileTemplate>\r\n                        \u003cexcludedScopes>system,test\u003c/excludedScopes>\r\n                        \u003cexcludedGroups>${project.groupId}\u003c/excludedGroups>\r\n                        \u003clicenseMerges>\r\n                            \u003clicenseMerge>\r\n                                Apache License, Version 2.0 |\r\n                                Apache License, version 2.0 |\r\n                                Apache License Version 2 |\r\n                                Apache License Version 2.0 |\r\n                                Apache License version 2.0 |\r\n                                Apache 2 |\r\n                                Apache 2.0 |\r\n                                Apache License, 2.0 |\r\n                                Apache License 2 |\r\n                                Apache License 2.0 |\r\n                                Apache Public License 2.0 |\r\n                                Apache Software License - Version 2.0 |\r\n                                Apache v2 |\r\n                                ASL, version 2 |\r\n                                The Apache License, Version 2.0 |\r\n                                The Apache Software License, Version 2.0\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                Apache License |\r\n                                Apache Software Licenses\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                BSD License |\r\n                                BSD license |\r\n                                BSD |\r\n                                The BSD License\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                BSD 3-Clause License |\r\n                                BSD 3-Clause |\r\n                                BSD 3-clause |\r\n                                The BSD 3-Clause License |\r\n                                New BSD License |\r\n                                New BSD license\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                Common Development and Distribution License (CDDL) v1.0 |\r\n                                COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0 |\r\n                                CDDL 1.0\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                Common Development and Distribution License (CDDL) v1.1 |\r\n                                COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.1 |\r\n                                CDDL 1.1 |\r\n                                Common Development and Distribution License (CDDL), Version 1.1\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                Common Development and Distribution License |\r\n                                \u003c!-- Multilicense, choosing CDDL -->\r\n                                CDDL+GPL |\r\n                                CDDL+GPL License |\r\n                                CDDL + GPLv2 with classpath exception\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                Eclipse Public License, Version 1.0 |\r\n                                Eclipse Public License 1.0 |\r\n                                Eclipse Public License - v 1.0\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                Eclipse Public License, Version 2.0 |\r\n                                EPL-2.0 |\r\n                                EPL 2.0\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                Eclipse Distribution License, Version 1.0 |\r\n                                Eclipse Distribution License - v 1.0 |\r\n                                EDL 1.0\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                MIT License |\r\n                                The MIT License |\r\n                                MIT license |\r\n                                MIT X11 License |\r\n                                MIT\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                The GNU General Public License (GPL), Version 2, With Classpath Exception |\r\n                                GPL2 w/ CPE\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                GNU Lesser General Public License (LGPL), Version 2.1 |\r\n                                LGPL, version 2.1 |\r\n                                GNU Lesser General Public License Version 2.1 |\r\n                                GNU Lesser General Public License, version 2.1\r\n                            \u003c/licenseMerge>\r\n                            \u003clicenseMerge>\r\n                                Common Public License Version 1.0 |\r\n                                Common Public License - v 1.0\r\n                            \u003c/licenseMerge>\r\n                        \u003c/licenseMerges>\r\n                    \u003c/configuration>\r\n                \u003c/plugin>\r\n```\r\n\r\nThis works fine with **2.1.0** but now fails with a NullPointerException in **2.2.0**:\r\n\r\n```bash\r\n[ERROR] Failed to execute goal org.codehaus.mojo:license-maven-plugin:2.2.0:aggregate-add-third-party (generate-and-check-licenses) on project XXX could not execute goal AggregatorAddThirdPartyMojo for reason : null: NullPointerException -> [Help 1]\r\norg.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:license-maven-plugin:2.2.0:aggregate-add-third-party (generate-and-check-licenses) on project XXX: could not execute goal AggregatorAddThirdPartyMojo for reason : null\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:375)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)\r\n    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)\r\n    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)\r\n    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)\r\n    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)\r\n    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:298)\r\n    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)\r\n    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)\r\n    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)\r\n    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)\r\n    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)\r\n    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)\r\n    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)\r\n    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)\r\n    at java.lang.reflect.Method.invoke (Method.java:566)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)\r\nCaused by: org.apache.maven.plugin.MojoExecutionException: could not execute goal AggregatorAddThirdPartyMojo for reason : null\r\n    at org.codehaus.mojo.license.AbstractLicenseMojo.execute (AbstractLicenseMojo.java:187)\r\n    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)\r\n    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)\r\n    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)\r\n    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)\r\n    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)\r\n    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:298)\r\n    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)\r\n    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)\r\n    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)\r\n    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)\r\n    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)\r\n    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)\r\n    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)\r\n    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)\r\n    at java.lang.reflect.Method.invoke (Method.java:566)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)\r\nCaused by: java.lang.NullPointerException\r\n    at org.codehaus.mojo.license.api.DefaultThirdPartyTool.getProjectsWithNoLicense (DefaultThirdPartyTool.java:168)\r\n    at org.codehaus.mojo.license.api.DefaultThirdPartyHelper.getProjectsWithNoLicense (DefaultThirdPartyHelper.java:214)\r\n    at org.codehaus.mojo.license.AbstractAddThirdPartyMojo.consolidate (AbstractAddThirdPartyMojo.java:775)\r\n    at org.codehaus.mojo.license.AddThirdPartyMojo.initFromMojo (AddThirdPartyMojo.java:440)\r\n    at org.codehaus.mojo.license.AggregatorAddThirdPartyMojo.doAction (AggregatorAddThirdPartyMojo.java:221)\r\n    at org.codehaus.mojo.license.AbstractLicenseMojo.execute (AbstractLicenseMojo.java:180)\r\n    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute2 (MojoExecutor.java:370)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:351)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:171)\r\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:163)\r\n    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)\r\n    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)\r\n    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)\r\n    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)\r\n    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:298)\r\n    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)\r\n    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)\r\n    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)\r\n    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)\r\n    at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)\r\n    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)\r\n    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)\r\n    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)\r\n    at java.lang.reflect.Method.invoke (Method.java:566)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)\r\n    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)\r\n[ERROR] \r\n[ERROR] Re-run Maven using the -X switch to enable full debug logging.\r\n[ERROR] \r\n[ERROR] For more information about the errors and possible solutions, please read the following articles:\r\n[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException\r\n\r\n```\r\n\r\nObviously, after looking into the code it seems that `licenseMap` is `NULL`.  \r\n\r\nAny idea what I am missing here or anything we are doing wrong in the related config? \r\n\r\nThanks in advance!\r\n","author":{"url":"https://github.com/rzo1","@type":"Person","name":"rzo1"},"datePublished":"2023-07-04T12:27:52Z","url":"https://github.com/mojohaus/license-maven-plugin/issues/508"}