gradle: Cannot set property 'project' on null object

[t...@quarendon.net]

I've just created a new OSGi enRoute workspace to try something out, and when I build it using gradle I get the following error:

* Where:

Build file 'D:\work\simple-osgi\build.gradle' line: 29

* What went wrong:

A problem occurred evaluating root project 'simple-osgi'.

> Failed to apply plugin [id 'biz.aQute.bnd']

   > Cannot set property 'project' on null object

Literally all I've done is created a workspace, then created a project using the wizard, calling it "a.b".

Workspace https://github.com/tomq42/simple-osgi if you want to look.

Clearly I've done something wrong, but no idea what. Never seen this error before.

If it makes any difference, I've currently got Bnd-3.3.0.201608051629-SNAPSHOT as the version of bndtools in eclipse.

* Exception is:

org.gradle.api.GradleScriptException: A problem occurred evaluating root project 'simple-osgi'.

        at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:92)

        at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl$2.run(DefaultScriptPluginFactory.java:177)

        at org.gradle.configuration.ProjectScriptTarget.addConfiguration(ProjectScriptTarget.java:77)

        at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl.apply(DefaultScriptPluginFactory.java:182)

        at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:38)

        at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:25)

        at org.gradle.configuration.project.ConfigureActionsProjectEvaluator.evaluate(ConfigureActionsProjectEvaluator.java:34)

        at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(LifecycleProjectEvaluator.java:55)

        at org.gradle.api.internal.project.DefaultProject.evaluate(DefaultProject.java:573)

        at org.gradle.api.internal.project.DefaultProject.evaluate(DefaultProject.java:125)

        at org.gradle.execution.TaskPathProjectEvaluator.configureHierarchy(TaskPathProjectEvaluator.java:42)

        at org.gradle.configuration.DefaultBuildConfigurer.configure(DefaultBuildConfigurer.java:38)

        at org.gradle.initialization.DefaultGradleLauncher$2.run(DefaultGradleLauncher.java:124)

        at org.gradle.internal.Factories$1.create(Factories.java:22)

        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)

        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:53)

        at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:121)

        at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)

        at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:98)

        at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:92)

        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)

        at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:63)

        at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:92)

        at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:83)

        at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:94)

        at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)

        at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)

        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)

        at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:28)

        at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:82)

        at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:49)

        at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:59)

        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:49)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)

        at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)

        at org.gradle.util.Swapper.swap(Swapper.java:38)

        at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)

        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)

        at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.HintGCAfterBuild.execute(HintGCAfterBuild.java:44)

        at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)

        at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)

        at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:240)

        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)

        at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)

Caused by: org.gradle.api.internal.plugins.PluginApplicationException: Failed to apply plugin [id 'biz.aQute.bnd']

        at org.gradle.api.internal.plugins.DefaultPluginManager.doApply(DefaultPluginManager.java:155)

        at org.gradle.api.internal.plugins.DefaultPluginManager.addImperativePlugin(DefaultPluginManager.java:67)

        at org.gradle.api.internal.plugins.DefaultPluginContainer.apply(DefaultPluginContainer.java:55)

        at org.gradle.api.plugins.PluginContainer$apply.call(Unknown Source)

        at build_yjcm3r0xfy32kjn13yypmwzr$_run_closure1.doCall(D:\work\simple-osgi\build.gradle:29)

        at org.gradle.api.internal.ClosureBackedAction.execute(ClosureBackedAction.java:70)

        at org.gradle.util.ConfigureUtil.configureTarget(ConfigureUtil.java:160)

        at org.gradle.util.ConfigureUtil.configure(ConfigureUtil.java:106)

        at org.gradle.api.internal.project.DefaultProject.configure(DefaultProject.java:921)

        at org.gradle.api.internal.project.DefaultProject.configure(DefaultProject.java:926)

        at org.gradle.api.internal.project.DefaultProject.subprojects(DefaultProject.java:909)

        at org.gradle.internal.metaobject.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:382)

        at org.gradle.internal.metaobject.BeanDynamicObject.invokeMethod(BeanDynamicObject.java:170)

        at org.gradle.internal.metaobject.CompositeDynamicObject.invokeMethod(CompositeDynamicObject.java:96)

        at org.gradle.internal.metaobject.MixInClosurePropertiesAsMethodsDynamicObject.invokeMethod(MixInClosurePropertiesAsMethodsDynamicObject.java:30)

        at org.gradle.internal.metaobject.AbstractDynamicObject.invokeMethod(AbstractDynamicObject.java:163)

        at org.gradle.groovy.scripts.BasicScript.methodMissing(BasicScript.java:83)

        at build_yjcm3r0xfy32kjn13yypmwzr.run(D:\work\simple-osgi\build.gradle:26)

        at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:90)

        ... 58 more

Caused by: java.lang.NullPointerException: Cannot set property 'project' on null object

        at aQute.bnd.gradle.BndPlugin$_apply_closure1.doCall(BndPlugin.groovy:64)

        at org.gradle.api.internal.ClosureBackedAction.execute(ClosureBackedAction.java:70)

        at org.gradle.util.ConfigureUtil.configureTarget(ConfigureUtil.java:160)

        at org.gradle.util.ConfigureUtil.configure(ConfigureUtil.java:106)

        at org.gradle.api.internal.project.DefaultProject.configure(DefaultProject.java:921)

        at org.gradle.api.Project$configure.call(Unknown Source)

        at aQute.bnd.gradle.BndPlugin.apply(BndPlugin.groovy:42)

        at aQute.bnd.gradle.BndPlugin.apply(BndPlugin.groovy)

        at org.gradle.api.internal.plugins.ImperativeOnlyPluginApplicator.applyImperative(ImperativeOnlyPluginApplicator.java:35)

        at org.gradle.api.internal.plugins.RuleBasedPluginApplicator.applyImperative(RuleBasedPluginApplicator.java:43)

        at org.gradle.api.internal.plugins.DefaultPluginManager.doApply(DefaultPluginManager.java:139)

        ... 76 more

[BJ Hargrave]

Oops.

See https://github.com/bndtools/bnd/wiki/Changes-in-3.2.0#known-issues. The Bnd 3.2 gradle plugin does not work with Gradle 2.14 or later. And I upgraded the osgi/workspace gradlew to 3.0 before Bnd 3.3 was released.

So you can either:
- use a local gradle installation which is 2.13,

- change the gradle wrapper in the project to 2.13,

- or configure the workspace to use the Bnd 3.3 snapshot gradle plugin. (The details are in a previous email to this list announce the RC builds).

Once Bnd 3.3 is released, I'll fix the osgi/workspace to use the Bnd 3.3 gradle plugin.

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[t...@quarendon.net]

On Monday, 19 September 2016 15:53:19 UTC+1, BJ Hargrave wrote:

- or configure the workspace to use the Bnd 3.3 snapshot gradle plugin. (The details are in a previous email to this list announce the RC builds).

OK, I  replaced the existing "buildscript" bit in build.gradle with:

buildscript {

  repositories {

    maven {

      url 'https://bndtools.ci.cloudbees.com/job/bnd.next/588/artifact/dist/bundles/'

    }

  }

  dependencies {

    classpath 'biz.aQute.bnd:biz.aQute.bnd.gradle:3.3.0-SNAPSHOT'

  }

}

and it seemed to work.

Thanks.

[BJ Hargrave]

You should have changed that in settings.gradle, not build.gradle. build.gradle will use the buildscript classpath established by settings.gradle.

Also, for now, I reverted the commit in osgi/workspace to use gradlew 3.0.

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[t...@quarendon.net]

On Monday, 19 September 2016 16:12:46 UTC+1, BJ Hargrave wrote:

You should have changed that in settings.gradle, not build.gradle. build.gradle will use the buildscript classpath established by settings.gradle.

The settings.gradle file has:

/* Add bnd gradle plugin as a script dependency */

buildscript {

  repositories {

    mavenCentral()

  }

  dependencies {

    classpath bnd_plugin

  }

  /* Pass bnd gradle plugin classpath to rootProject once created */

  def bndPlugin = files(configurations.classpath.files)

  gradle.rootProject { rootProject ->

    rootProject.ext.bndPlugin = bndPlugin

  }

} 

So what should it look like? Replace the whole section? Leave the "Pass the bnd..." bit and all that follows?

[BJ Hargrave]

Add the cloudbees URL to the repositories section. Then you can either replace the classpath or edit the property in the gradle.properties file.

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BJ