我的Gradle版本通过ant.signjar任务签署了近200个罐子。为了加快速度，我决定尝试使用here和here中的信息对其进行多线程处理。仅供参考：我的Core Duo笔记本电脑在25分钟内降至7分钟（快4倍！）。
然而，有时它会成功运行，有时会失败，我无法解决原因。这可能与多线程有关，但我无法解释为什么每次都不会发生这种情况。
我的代码现在看起来像这样。
import groovy.io.FileType
import static groovyx.gpars.GParsPool.withPool
//This is so that we can use the Groovy parallel library in the build script
buildscript {
repositories {
mavenLocal()
mavenCentral()
//Change to this if you have your own repo
maven {
url "http://localhost:8081/nexus/content/groups/public/"
}
}
dependencies {
classpath group: 'org.codehaus.gpars', name: 'gpars', version: '1.2.1'
}
}
task signWebstartJars() << {
File unsignedFolder = new File('build/maven')
File signedFolder = new File('signed-libs')
signedFolder.mkdirs()
def list = []
unsignedFolder.eachFileRecurse(FileType.FILES) { file ->
list << file
}
list.sort()
//Create a closure that allows us to run the actual ant task multi-threaded later
def antClosure = {
println "Updating manifest: " + it
//Manifest needs extra attributes added for security
ant.jar(destfile: it, update: true) {
delegate.manifest {
attribute(name: 'permissions', value: 'all-permissions')
attribute(name: 'codebase', value: '*')
}
}
println "Signing the jar: " + it
ant.signjar(
destDir: signedFolder,
alias: alias,
sigfile: sigfile,
jar: it,
keystore: keystore,
storepass: storepass,
storetype: storetype,
preservelastmodified: "true",
verbose: "true"
)
}
//Use twice as many CPUs for no. of threads
result = withPool(Runtime.runtime.availableProcessors() * 2) {
list.collectParallel antClosure
}
}
有时会发生错误。
* What went wrong:
Execution failed for task ':signWebstartJars'.
> : manifest doesn't support the nested "jar" element.
* Try:
Run with --debug option to get more log output.
* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':signWebstartJars'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:42)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:296)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.executeTask(AbstractTaskPlanExecutor.java:79)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:63)
at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:51)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:23)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:86)
at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67)
at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54)
at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:148)
at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:105)
at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:85)
at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:81)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:39)
at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:45)
at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:35)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:24)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.StartStopIfBuildAndStop.execute(StartStopIfBuildAndStop.java:33)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.ReturnResult.execute(ReturnResult.java:34)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:71)
at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:69)
at org.gradle.util.Swapper.swap(Swapper.java:38)
at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:69)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:60)
at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:45)
at org.gradle.launcher.daemon.server.DaemonStateCoordinator.runCommand(DaemonStateCoordinator.java:184)
at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy.doBuild(StartBuildOrRespondWithBusy.java:49)
at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:34)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.HandleStop.execute(HandleStop.java:30)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.DaemonHygieneAction.execute(DaemonHygieneAction.java:39)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.CatchAndForwardDaemonFailure.execute(CatchAndForwardDaemonFailure.java:32)
at org.gradle.launcher.daemon.server.exec.DaemonCommandExecution.proceed(DaemonCommandExecution.java:125)
at org.gradle.launcher.daemon.server.exec.DefaultDaemonCommandExecuter.executeCommand(DefaultDaemonCommandExecuter.java:51)
at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.handleCommand(DefaultIncomingConnectionHandler.java:155)
at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.receiveAndHandleCommand(DefaultIncomingConnectionHandler.java:128)
at org.gradle.launcher.daemon.server.DefaultIncomingConnectionHandler$ConnectionWorker.run(DefaultIncomingConnectionHandler.java:116)
at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
Caused by: : manifest doesn't support the nested "jar" element.
at jsr166y.ForkJoinTask.getThrowableException(ForkJoinTask.java:504)
at jsr166y.ForkJoinTask.reportResult(ForkJoinTask.java:567)
at jsr166y.ForkJoinTask.join(ForkJoinTask.java:611)
at jsr166y.ForkJoinPool.invoke(ForkJoinPool.java:1492)
at groovyx.gpars.extra166y.AbstractParallelAnyArray.allObjects(AbstractParallelAnyArray.java:306)
at groovyx.gpars.extra166y.ParallelArrayWithMapping.all(ParallelArrayWithMapping.java:141)
at groovyx.gpars.GParsPoolUtil.collectParallel(GParsPoolUtil.java:495)
at setup_g7k3p5ae0k79s0m3i6ril71p5$_run_closure10_closure45.doCall(D:\Calypso\clients\v14Build\setup.gradle:863)
at groovyx.gpars.GParsPool$_withExistingPool_closure1.doCall(GParsPool.groovy:174)
at groovyx.gpars.GParsPool$_withExistingPool_closure1.doCall(GParsPool.groovy)
at groovyx.gpars.GParsPool.withExistingPool(GParsPool.groovy:173)
at groovyx.gpars.GParsPool$withExistingPool$1.callStatic(Unknown Source)
at groovyx.gpars.GParsPool$withExistingPool$1.callStatic(Unknown Source)
at groovyx.gpars.GParsPool.withPool(GParsPool.groovy:145)
at groovyx.gpars.GParsPool$withPool$0.callStatic(Unknown Source)
at groovyx.gpars.GParsPool$withPool$0.callStatic(Unknown Source)
at groovyx.gpars.GParsPool.withPool(GParsPool.groovy:121)
at groovyx.gpars.GParsPool$withPool.callStatic(Unknown Source)
at setup_g7k3p5ae0k79s0m3i6ril71p5$_run_closure10.doCall(D:\Calypso\clients\v14Build\setup.gradle:862)
at org.gradle.api.internal.AbstractTask$ClosureTaskAction.execute(AbstractTask.java:539)
at org.gradle.api.internal.AbstractTask$ClosureTaskAction.execute(AbstractTask.java:520)
at org.gradle.api.internal.tasks.TaskMutator$1.execute(TaskMutator.java:77)
at org.gradle.api.internal.tasks.TaskMutator$1.execute(TaskMutator.java:73)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
... 66 more
Caused by: : manifest doesn't support the nested "jar" element.
at jsr166y.ForkJoinTask.getThrowableException(ForkJoinTask.java:504)
at jsr166y.ForkJoinTask.reportResult(ForkJoinTask.java:567)
at jsr166y.ForkJoinTask.join(ForkJoinTask.java:611)
at groovyx.gpars.extra166y.PAS$FJBase.internalCompute(PAS.java:120)
at groovyx.gpars.extra166y.PAS$FJBase.compute(PAS.java:106)
at jsr166y.RecursiveAction.exec(RecursiveAction.java:148)
at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:305)
at jsr166y.ForkJoinWorkerThread.execTask(ForkJoinWorkerThread.java:575)
at jsr166y.ForkJoinPool.scan(ForkJoinPool.java:755)
at jsr166y.ForkJoinPool.work(ForkJoinPool.java:617)
at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:369)
Caused by: : manifest doesn't support the nested "jar" element.
at org.apache.tools.ant.UnknownElement.handleChildren(UnknownElement.java:371)
at org.apache.tools.ant.UnknownElement.handleChild(UnknownElement.java:593)
at org.apache.tools.ant.UnknownElement.handleChildren(UnknownElement.java:358)
at org.apache.tools.ant.UnknownElement.configure(UnknownElement.java:204)
at org.apache.tools.ant.UnknownElement.maybeConfigure(UnknownElement.java:163)
at org.gradle.api.internal.project.ant.BasicAntBuilder.nodeCompleted(BasicAntBuilder.java:71)
at org.gradle.api.internal.project.ant.BasicAntBuilder.doInvokeMethod(BasicAntBuilder.java:86)
at setup_g7k3p5ae0k79s0m3i6ril71p5$_run_closure10_closure44.doCall(D:\Calypso\clients\v14Build\setup.gradle:840)
at groovyx.gpars.pa.CallClosure.call(CallClosure.java:47)
at groovyx.gpars.pa.ClosureMapper.op(ClosureMapper.java:36)
at groovyx.gpars.extra166y.AbstractParallelAnyArray$OOMPap.leafTransfer(AbstractParallelAnyArray.java:2255)
at groovyx.gpars.extra166y.PAS$FJOMap.atLeaf(PAS.java:258)
at groovyx.gpars.extra166y.PAS$FJBase.internalCompute(PAS.java:120)
at groovyx.gpars.extra166y.PAS$FJBase.compute(PAS.java:106)
at jsr166y.RecursiveAction.exec(RecursiveAction.java:148)
at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:305)
at jsr166y.ForkJoinWorkerThread.execTask(ForkJoinWorkerThread.java:575)
at jsr166y.ForkJoinPool.scan(ForkJoinPool.java:733)
... 2 more
Caused by: class org.apache.tools.ant.taskdefs.Manifest doesn't support the nested "jar" element.
at org.apache.tools.ant.IntrospectionHelper.throwNotSupported(IntrospectionHelper.java:509)
at org.apache.tools.ant.UnknownElement.handleChildren(UnknownElement.java:361)
... 19 more
答案 0 :(得分：1)
它seems like AntBuilder不是线程安全的。在闭包中创建一个新的AntBuilder修复了它。我已经从Gradle论坛粘贴了下面的片段，因为它比我在原帖中的示例短。
import groovyx.gpars.GParsPool
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath group: 'org.codehaus.gpars', name: 'gpars', version: '1.1.0'
}
}
task signMyJars {
doLast {
List filesToSign = [
file('file1.jar'),file('file2.jar'),file('file3.jar')
]
GParsPool.withPool {
filesToSign.eachParallel { f ->
def antLocal = project.createAntBuilder()
antLocal.signjar(
alias: "my key alias",
jar: f,
keystore: "my_key_store",
storepass: "key_store_pass",
storetype: "pkcs12",
)
}
}
}
}