I'm kicking the tires on animal-sniffer & I've hit a problem with the enforcer rule. The stack trace is below.
In my tire kicker, I have a 1.0 module with a few classes, a 2.0 module
with the same classes, containing both compatible & incompatible changes.
The 1.0 module builds a signature file, the 2.0 module uses the enforcer
rule to check that the 2.0 version of the API is compatible with the 1.0
signature file. I can zip up the whole thing and send it along if it would
be helpful.
I pulled down the animal-sniffer code to investigate...it looks like
SignatureChecker.java:268 is trying to do something with the source path;
I couldn't see how the source path was being set in the enforcer rule...
Stack trace follows:
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-enforcer-plugin:1.2:enforce
(check-api-signature) on project sniffer-test: Execution
check-api-signature of goal
org.apache.maven.plugins:maven-enforcer-plugin:1.2:enforce failed.
NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
goal org.apache.maven.plugins:maven-enforcer-plugin:1.2:enforce
(check-api-signature) on project sniffer-test: Execution
check-api-signature of goal
org.apache.maven.plugins:maven-enforcer-plugin:1.2:enforce failed.
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
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:84)
at
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:611)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution
check-api-signature of goal
org.apache.maven.plugins:maven-enforcer-plugin:1.2:enforce failed.
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 19 more
Caused by: java.lang.NullPointerException
at
org.codehaus.mojo.animal_sniffer.SignatureChecker$CheckingVisitor.visitSource(SignatureChecker.java:268)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at
org.codehaus.mojo.animal_sniffer.SignatureChecker.process(SignatureChecker.java:156)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.processClassFile(ClassFileVisitor.java:178)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:103)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:83)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.processDirectory(ClassFileVisitor.java:121)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:99)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:83)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.processDirectory(ClassFileVisitor.java:121)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:99)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:83)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.processDirectory(ClassFileVisitor.java:121)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:99)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:83)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.processDirectory(ClassFileVisitor.java:121)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:99)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:83)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.processDirectory(ClassFileVisitor.java:121)
at
org.codehaus.mojo.animal_sniffer.ClassFileVisitor.process(ClassFileVisitor.java:99)
at
org.codehaus.mojo.animal_sniffer.enforcer.CheckSignatureRule.execute(CheckSignatureRule.java:127)
at
org.apache.maven.plugins.enforcer.EnforceMojo.execute(EnforceMojo.java:178)
at
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
... 20 more
Jeffrey E. (Jeff) Care
Advisory Software Engineer | IBM Watson Solutions Release Engineering
email: ca...@us.ibm.com | External: 919-543-4907 | Tie line: 441-4907
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