How to make Eclipse see buildSrc/src/main/groovy as a Java project?


(Steve Cohen) #1

In the User’s Guide, under ‘Writing Custom Plugins’ is the suggestion to place the code in the buildSrc directory, and this works prettty well.

buildSrc project
You can put the source for the plugin in the
rootProjectDir/buildSrc/src/main/groovy directory.
Gradle will take care of compiling and testing the plugin and making it available on the
classpath of the build script. The plugin is visible to every build script used by the build.
However, it is not visible outside the build, and so you cannot reuse the plugin outside the
build it is defined in.

The one problem with this suggestion is that Eclipse does not allow you to treat the buildSrc/src/main/groovy directory as a sourceFolder if your Gradle project is not a Java project (or Groovy project).

It would a very nice to have if Buildship provided a way to overcome this limitation.


(Stefan Oehme) #2

buildSrc is a separate project, not a source folder. You can import it using the Gradle import wizard.

We plan to make this easier with composite builds at some point, so that Eclipse automatically imports the buildSrc project if present.


(mauromol) #3

Hi Stefan.
I was just migrating a project with a buildSrc/src/main/java source set from Buildship 1.x to Buildship 2.x.

With Buildship 1.x, after applying the Java plugin to the owning project, Buildship was adding buildSrc/src/main/java folder to the Eclipse source folders for the owning project.
With Buildship 2.x this does not happen any more.

Here you suggest that buildSrc should be an independent project and you suggest that it should be imported with the Gradle import wizard. However, if I import my Gradle multiproject by pointing the Gradle import wizard to the “master” project, the “buildSrc” subproject is not detected. Is it considered a completely independent project that I have to manually import on its own?

For me, it would be OK to have the old behaviour (i.e.: simply add buildSrc/src/main/java to the owning project buildpath): what is the easiest way to obtain this with the new Buildship? I suspect I have to work with the eclipse.classpath { } block, but I’m not sure how.

Thanks in advance.


(mauromol) #4

As an addition note, I tried to import the buildSrc project on its own with Buildship and I get an exception:

org.gradle.tooling.BuildException: Could not fetch model of type 'GradleBuild' using Gradle distribution 'https://services.gradle.org/distributions/gradle-4.1-bin.zip'.
    at org.gradle.tooling.internal.consumer.ExceptionTransformer.transform(ExceptionTransformer.java:51)
    at org.gradle.tooling.internal.consumer.ExceptionTransformer.transform(ExceptionTransformer.java:29)
    at org.gradle.tooling.internal.consumer.ResultHandlerAdapter.onFailure(ResultHandlerAdapter.java:41)
    at org.gradle.tooling.internal.consumer.async.DefaultAsyncConsumerActionExecutor$1$1.run(DefaultAsyncConsumerActionExecutor.java:57)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
    at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:46)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    at org.gradle.tooling.internal.consumer.BlockingResultHandler.getResult(BlockingResultHandler.java:46)
    at org.gradle.tooling.internal.consumer.DefaultModelBuilder.get(DefaultModelBuilder.java:50)
    at sun.reflect.GeneratedMethodAccessor184.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.buildship.core.workspace.internal.ConnectionAwareLauncherProxy.invokeRun(ConnectionAwareLauncherProxy.java:170)
    at org.eclipse.buildship.core.workspace.internal.ConnectionAwareLauncherProxy.invoke(ConnectionAwareLauncherProxy.java:160)
    at com.sun.proxy.$Proxy30.get(Unknown Source)
    at org.eclipse.buildship.core.workspace.internal.DefaultModelProvider$2.get(DefaultModelProvider.java:122)
    at org.eclipse.buildship.core.workspace.internal.DefaultModelProvider$3.call(DefaultModelProvider.java:142)
    at com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4724)
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3522)
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2315)
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2278)
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2193)
    at com.google.common.cache.LocalCache.get(LocalCache.java:3932)
    at com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4721)
    at org.eclipse.buildship.core.workspace.internal.DefaultModelProvider.getFromCache(DefaultModelProvider.java:153)
    at org.eclipse.buildship.core.workspace.internal.DefaultModelProvider.executeOperation(DefaultModelProvider.java:138)
    at org.eclipse.buildship.core.workspace.internal.DefaultModelProvider.executeModelBuilder(DefaultModelProvider.java:118)
    at org.eclipse.buildship.core.workspace.internal.DefaultModelProvider.fetchModel(DefaultModelProvider.java:69)
    at org.eclipse.buildship.core.workspace.internal.DefaultModelProvider.fetchGradleBuild(DefaultModelProvider.java:93)
    at org.eclipse.buildship.core.projectimport.ProjectPreviewJob.fetchGradleBuildStructure(ProjectPreviewJob.java:86)
    at org.eclipse.buildship.core.projectimport.ProjectPreviewJob.runToolingApiJobInWorkspace(ProjectPreviewJob.java:75)
    at org.eclipse.buildship.core.util.progress.ToolingApiWorkspaceJob$1.run(ToolingApiWorkspaceJob.java:79)
    at org.eclipse.buildship.core.util.progress.ToolingApiInvoker.invoke(ToolingApiInvoker.java:62)
    at org.eclipse.buildship.core.util.progress.ToolingApiWorkspaceJob.runInWorkspace(ToolingApiWorkspaceJob.java:76)
    at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:39)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
Caused by: org.gradle.internal.exceptions.LocationAwareException: Build file 'D:\co\DCS-SHOP-development\master\buildSrc\build.gradle' line: 7
A problem occurred evaluating root project 'buildSrc'.
    at org.gradle.initialization.DefaultExceptionAnalyser.transform(DefaultExceptionAnalyser.java:74)
    at org.gradle.initialization.MultipleBuildFailuresExceptionAnalyser.transform(MultipleBuildFailuresExceptionAnalyser.java:47)
    at org.gradle.initialization.StackTraceSanitizingExceptionAnalyser.transform(StackTraceSanitizingExceptionAnalyser.java:30)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:135)
    at org.gradle.initialization.DefaultGradleLauncher.getConfiguredBuild(DefaultGradleLauncher.java:102)
    at org.gradle.internal.invocation.GradleBuildController$2.call(GradleBuildController.java:87)
    at org.gradle.internal.invocation.GradleBuildController$2.call(GradleBuildController.java:84)
    at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:152)
    at org.gradle.internal.invocation.GradleBuildController.doBuild(GradleBuildController.java:100)
    at org.gradle.internal.invocation.GradleBuildController.configure(GradleBuildController.java:84)
    at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:55)
    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
    at org.gradle.tooling.internal.provider.ValidatingBuildActionRunner.run(ValidatingBuildActionRunner.java:32)
    at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$1.run(RunAsBuildOperationBuildActionRunner.java:43)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
    at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:40)
    at org.gradle.tooling.internal.provider.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:51)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:45)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:29)
    at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:39)
    at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:25)
    at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:71)
    at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:45)
    at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:51)
    at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:32)
    at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:36)
    at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:25)
    at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:43)
    at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:29)
    at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:64)
    at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:29)
    at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:55)
    at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:42)
    at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:58)
    at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:33)
    at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:67)
    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:37)
    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:62)
    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:82)
    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.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
    at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:297)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
    at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
Caused by: org.gradle.api.GradleScriptException: A problem occurred evaluating root project 'buildSrc'.
    at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:92)
    at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl$2.run(DefaultScriptPluginFactory.java:187)
    at org.gradle.configuration.ProjectScriptTarget.addConfiguration(ProjectScriptTarget.java:77)
    at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl.apply(DefaultScriptPluginFactory.java:192)
    at org.gradle.configuration.BuildOperationScriptPlugin$1.run(BuildOperationScriptPlugin.java:61)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
    at org.gradle.configuration.BuildOperationScriptPlugin.apply(BuildOperationScriptPlugin.java:58)
    at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:39)
    at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:26)
    at org.gradle.configuration.project.ConfigureActionsProjectEvaluator.evaluate(ConfigureActionsProjectEvaluator.java:34)
    at org.gradle.configuration.project.LifecycleProjectEvaluator.doConfigure(LifecycleProjectEvaluator.java:63)
    at org.gradle.configuration.project.LifecycleProjectEvaluator.access$100(LifecycleProjectEvaluator.java:33)
    at org.gradle.configuration.project.LifecycleProjectEvaluator$ConfigureProject.run(LifecycleProjectEvaluator.java:103)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
    at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(LifecycleProjectEvaluator.java:49)
    at org.gradle.api.internal.project.DefaultProject.evaluate(DefaultProject.java:651)
    at org.gradle.api.internal.project.DefaultProject.evaluate(DefaultProject.java:133)
    at org.gradle.execution.TaskPathProjectEvaluator.configure(TaskPathProjectEvaluator.java:35)
    at org.gradle.execution.TaskPathProjectEvaluator.configureHierarchy(TaskPathProjectEvaluator.java:60)
    at org.gradle.configuration.DefaultBuildConfigurer.configure(DefaultBuildConfigurer.java:38)
    at org.gradle.initialization.DefaultGradleLauncher$ConfigureBuild.run(DefaultGradleLauncher.java:246)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
    at org.gradle.initialization.DefaultGradleLauncher.configureBuild(DefaultGradleLauncher.java:165)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:124)
    ... 62 more
Caused by: org.gradle.internal.metaobject.AbstractDynamicObject$CustomMessageMissingMethodException: Could not find method compile() for arguments [org.flywaydb:flyway-core:3.2.1] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
    at org.gradle.internal.metaobject.AbstractDynamicObject.methodMissingException(AbstractDynamicObject.java:179)
    at org.gradle.internal.metaobject.ConfigureDelegate.invokeMethod(ConfigureDelegate.java:89)
    at build_3d5ocayf8j1cq14ju8zd0a9t6$_run_closure2.doCall(D:\co\DCS-SHOP-development\master\buildSrc\build.gradle:7)
    at org.gradle.api.internal.ClosureBackedAction.execute(ClosureBackedAction.java:71)
    at org.gradle.util.ConfigureUtil.configureTarget(ConfigureUtil.java:160)
    at org.gradle.util.ConfigureUtil.configure(ConfigureUtil.java:106)
    at org.gradle.api.internal.project.DefaultProject.dependencies(DefaultProject.java:1146)
    at org.gradle.internal.metaobject.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:479)
    at org.gradle.internal.metaobject.BeanDynamicObject.tryInvokeMethod(BeanDynamicObject.java:191)
    at org.gradle.internal.metaobject.CompositeDynamicObject.tryInvokeMethod(CompositeDynamicObject.java:98)
    at org.gradle.internal.metaobject.MixInClosurePropertiesAsMethodsDynamicObject.tryInvokeMethod(MixInClosurePropertiesAsMethodsDynamicObject.java:30)
    at org.gradle.groovy.scripts.BasicScript$ScriptDynamicObject.tryInvokeMethod(BasicScript.java:134)
    at org.gradle.internal.metaobject.AbstractDynamicObject.invokeMethod(AbstractDynamicObject.java:160)
    at org.gradle.groovy.scripts.BasicScript.invokeMethod(BasicScript.java:83)
    at build_3d5ocayf8j1cq14ju8zd0a9t6.run(D:\co\DCS-SHOP-development\master\buildSrc\build.gradle:5)
    at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:90)
    ... 94 more

I suspect it’s due to the buildSrc project not applying the Java plugin, but it seems it should not be necessary (Gradle works perfectly with this, I think it’s implicitely applied).


(Stefan Oehme) #5

This was never intended and I haven’t seen that happening. We might have had a bug there.

If you import buildSrc as its own project, it loses it’s “special” status and is just treated like any other independent build. So you’ll have to apply the plugin explicitly.


(mauromol) #6

I understand. So, any suggested way to avoid the need to alter the buildSrc/build.gradle file just to make Buildship happy? Any thought of how this should be correctly handled by Buildship in the long run?


(Stefan Oehme) #7

No, just add apply plugin: 'groovy'

We’ll make buildSrc an implicit included build and it’ll be imported just like other included builds in a composite would be.


(mauromol) #8

Ok, thank you! Is there any GitHub issue that tracks this plan?


(Stefan Oehme) #9