具有Micronaut和AWS SDK-V2的GraalVM本机映像

问题描述

使用micronaut和aws sdk-v2构建GraalVM本机映像时遇到问题。在详细说明错误之前，我要指出，在使用sdk-v2之前，本机映像已正确构建。

一旦我更新到aws sdk-v2（通过micronaut依赖性）：

...
implementation "io.micronaut.aws:micronaut-aws-sdk-v2:2.0.2"
...

尝试构建图片时出现错误

Fatal error:java.lang.NoSuchMethodError
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
    at java.base/java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:603)
    at java.base/java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1006)
    at com.oracle.svm.hosted.NativeImageGenerator.run(NativeImageGenerator.java:480)
    at com.oracle.svm.hosted.NativeImageGeneratorRunner.buildImage(NativeImageGeneratorRunner.java:349)
    at com.oracle.svm.hosted.NativeImageGeneratorRunner.build(NativeImageGeneratorRunner.java:508)
    at com.oracle.svm.hosted.NativeImageGeneratorRunner.main(NativeImageGeneratorRunner.java:114)
    at com.oracle.svm.hosted.NativeImageGeneratorRunner$JDK9Plus.main(NativeImageGeneratorRunner.java:537)
Caused by: java.lang.NoSuchMethodError: 'void io.micronaut.core.graal.AutomaticFeatureUtils.initializeAtBuildTime(org.graalvm.nativeimage.hosted.Feature$BeforeAnalysisAccess,java.lang.String)'
    at io.micronaut.aws.sdk.v2.graal.AwsSdkAutomaticFeature.beforeAnalysis(AwsSdkAutomaticFeature.java:41)
    at com.oracle.svm.hosted.NativeImageGenerator.lambda$runPointsToAnalysis$7(NativeImageGenerator.java:693)
    at com.oracle.svm.hosted.FeatureHandler.forEachFeature(FeatureHandler.java:70)
    at com.oracle.svm.hosted.NativeImageGenerator.runPointsToAnalysis(NativeImageGenerator.java:693)
    at com.oracle.svm.hosted.NativeImageGenerator.doRun(NativeImageGenerator.java:555)
    at com.oracle.svm.hosted.NativeImageGenerator.lambda$run$0(NativeImageGenerator.java:468)
    at java.base/java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1407)
    at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
    at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
    at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
    at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
    at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)
Error: Image build request failed with exit status 1
com.oracle.svm.driver.NativeImage$NativeImageError: Image build request failed with exit status 1
    at com.oracle.svm.driver.NativeImage.showError(NativeImage.java:1558)
    at com.oracle.svm.driver.NativeImage.build(NativeImage.java:1308)
    at com.oracle.svm.driver.NativeImage.performBuild(NativeImage.java:1269)
    at com.oracle.svm.driver.NativeImage.main(NativeImage.java:1228)
    at com.oracle.svm.driver.NativeImage$JDK9Plus.main(NativeImage.java:1740)
...

我的假设是，micronaut必须在内部进行一些反射，这会使构建过程失败。 我添加了以下json文件来设置反射配置

[
  {
    "name" : "io.micronaut.core.graal.AutomaticFeatureUtils","allDeclaredConstructors" : true,"allPublicConstructors" : true,"allDeclaredMethods" : true,"allPublicMethods" : true
  },{
    "name":"io.micronaut.core.graal.AutomaticFeatureUtils","methods":[{"name":"initializeAtBuildTime","parameterTypes":["org.graalvm.nativeimage.hosted.Feature$BeforeAnalysisAccess","java.lang.String[]"] }]
  }
]

但是错误仍然存​​在。不确定是否是由于 AutomaticFeatureUtils.initializeAtBuildTime 期望使用字符串的可变参数，但是在堆栈跟踪中我只能看到传递了一个String，或者该错误与反射完全无关

无论我尝试什么，构建图像时都找不到该方法。

对我可能在这里丢失的东西有任何想法吗？

谢谢！

解决方法

此错误与反射无关。

Feature和AutomaticFeature是GraalVM本机映像概念，允许对本机iamge进行编程配置，例如，可以在javadoc中找到更多详细信息：https://github.com/oracle/graal/blob/master/sdk/src/org.graalvm.nativeimage/src/org/graalvm/nativeimage/hosted/Feature.java#L59

您显示的错误发生在图像生成过程中，这是一个正常的Java进程，不需要配置反射等。这些是运行时行为的配置。

错误的意思是AwsSdkAutomaticFeature（source试图调用void io.micronaut.core.graal.AutomaticFeatureUtils.initializeAtBuildTime(org.graalvm.nativeimage.hosted.Feature$BeforeAnalysisAccess,java.lang.String)，但是没有这种方法。最可能的原因是两个版本之间的版本不匹配依赖项以及包含graal support的核心micronaut库。