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https://issues.apache.org/jira/browse/MPLUGIN-312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15439708#comment-15439708
]
Yegor Borovikov commented on MPLUGIN-312:
-----------------------------------------
[~rfscholte], thank you for quick resolution!
> maven-plugin-tools-annotations visitors fail scanning java8 annotations
> -----------------------------------------------------------------------
>
> Key: MPLUGIN-312
> URL: https://issues.apache.org/jira/browse/MPLUGIN-312
> Project: Maven Plugin Tools
> Issue Type: Bug
> Components: maven-plugin-tools-annotations
> Affects Versions: 3.4
> Reporter: Yegor Borovikov
> Assignee: Robert Scholte
> Fix For: 3.5
>
> Attachments: MPLUGIN-312-maven-plugin-tools-annotations.patch,
> java6-plugin.zip
>
>
> Custom (Java 6) Maven plugin (relying on Java 5 annotations to generate the
> plugin descriptor file) with dependencies that have Java 8 classes (not
> necessarily referenced by plugin code - just present in the jars) which use
> Java 8 type-use or type-parameter annotations fails on `generate:descriptor`
> goal:
> {noformat}
> $ mvn plugin:descriptor -e
> [INFO] Error stacktraces are turned on.
> [INFO] Scanning for projects...
> [INFO]
>
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Building java6-plugin 0.0-SNAPSHOT
> [INFO]
> ------------------------------------------------------------------------
> [INFO]
> [INFO] --- maven-plugin-plugin:3.4:descriptor (default-cli) @ java6-plugin ---
> [INFO] Using 'UTF-8' encoding to read mojo metadata.
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD FAILURE
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 1.022 s
> [INFO] Finished at: 2016-08-25T17:14:54-07:00
> [INFO] Final Memory: 10M/245M
> [INFO]
> ------------------------------------------------------------------------
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-plugin-plugin:3.4:descriptor (default-cli) on
> project java6-plugin: Execution default-cli of goal
> org.apache.maven.plugins:maven-plugin-plugin:3.4:descriptor failed.
> RuntimeException -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
> goal org.apache.maven.plugins:maven-plugin-plugin:3.4:descriptor
> (default-cli) on project java6-plugin: Execution default-cli of goal
> org.apache.maven.plugins:maven-plugin-plugin:3.4:descriptor failed.
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
> at
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
> at
> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
> at
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
> at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
> at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
> at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862)
> at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
> at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
> at
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
> Caused by: org.apache.maven.plugin.PluginExecutionException: Execution
> default-cli of goal
> org.apache.maven.plugins:maven-plugin-plugin:3.4:descriptor failed.
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
> at
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
> ... 20 more
> Caused by: java.lang.RuntimeException
> at org.objectweb.asm.FieldVisitor.visitTypeAnnotation(Unknown Source)
> at org.objectweb.asm.ClassReader.a(Unknown Source)
> at org.objectweb.asm.ClassReader.accept(Unknown Source)
> at org.objectweb.asm.ClassReader.accept(Unknown Source)
> at
> org.apache.maven.tools.plugin.extractor.annotations.scanner.DefaultMojoAnnotationsScanner.analyzeClassStream(DefaultMojoAnnotationsScanner.java:202)
> at
> org.apache.maven.tools.plugin.extractor.annotations.scanner.DefaultMojoAnnotationsScanner.scanArchive(DefaultMojoAnnotationsScanner.java:139)
> at
> org.apache.maven.tools.plugin.extractor.annotations.scanner.DefaultMojoAnnotationsScanner.scan(DefaultMojoAnnotationsScanner.java:108)
> at
> org.apache.maven.tools.plugin.extractor.annotations.scanner.DefaultMojoAnnotationsScanner.scan(DefaultMojoAnnotationsScanner.java:75)
> at
> org.apache.maven.tools.plugin.extractor.annotations.JavaAnnotationsMojoDescriptorExtractor.scanAnnotations(JavaAnnotationsMojoDescriptorExtractor.java:124)
> at
> org.apache.maven.tools.plugin.extractor.annotations.JavaAnnotationsMojoDescriptorExtractor.execute(JavaAnnotationsMojoDescriptorExtractor.java:103)
> at
> org.apache.maven.tools.plugin.scanner.DefaultMojoScanner.populatePluginDescriptor(DefaultMojoScanner.java:96)
> at
> org.apache.maven.plugin.plugin.AbstractGeneratorMojo.execute(AbstractGeneratorMojo.java:245)
> at
> org.apache.maven.plugin.plugin.DescriptorGeneratorMojo.execute(DescriptorGeneratorMojo.java:90)
> at
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
> ... 21 more
> [ERROR]
> [ERROR] Re-run Maven using the -X switch to enable full debug logging.
> [ERROR]
> [ERROR] For more information about the errors and possible solutions, please
> read the following articles:
> [ERROR] [Help 1]
> http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
> $
> {noformat}
> Failure happens in
> {{org.objectweb.asm.FieldVisitor.visitTypeAnnotation(...)}} method:
> {code}
> if (api < Opcodes.ASM5) {
> throw new RuntimeException();
> }
> {code}
> Simple fix is to pass {{Opcodes.ASM5}} (instead of {{Opcodes.-ASM4-}}) to
> super constructors of
> {{org.apache.maven.tools.plugin.extractor.annotations.scanner.visitors.MojoClassVisitor,
> MojoFieldVisitor, and MojoAnnotationVisitor}} classes, e.g.:
> {code}
> MojoFieldVisitor( Logger logger, String fieldName, String className )
> {
> super( Opcodes.ASM5 );
> this.logger = logger;
> this.fieldName = fieldName;
> this.className = className;
> }
> {code}
> {{mvn integration-test}} passes on {{maven-plugin-tools-3.4}} with the change
> applied to these three classes, and {{plugin:descriptor}} works flawlessly.
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