Quarkus：使用 AWS 类执行本机构建时出错

Question

我正在使用 Quarkus 2.6.1 构建一个应用程序，它将使用 AWS 开发工具包在 AWS 中执行操作。特别是 DynamoDB，它同时使用标准 DynamoDB 调用，以及用于对象映射的 DynamoDB Mapper。该应用程序在 JVM 模式下运行良好。但是，当我尝试构建本机可执行文件时，出现以下错误：

Error: Unsupported features in 2 methods
Detailed message:
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  To see how this object got instantiated use --trace-object-instantiation=java.util.Random. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$EqualJitterBackoffStrategy.random of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$EqualJitterBackoffStrategy@2c620143 reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy.equalJitterBackoffStrategy of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy@689747af reached by 
    reading field com.amazonaws.retry.RetryPolicy.backoffStrategy of
        constant com.amazonaws.retry.RetryPolicy@7ba74380 reached by 
    reading field com.amazonaws.ClientConfiguration.DEFAULT_RETRY_POLICY
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  To see how this object got instantiated use --trace-object-instantiation=java.util.Random. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$FullJitterBackoffStrategy.random of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$FullJitterBackoffStrategy@22c9268f reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy.fullJitterBackoffStrategy of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy@689747af reached by 
    reading field com.amazonaws.retry.RetryPolicy.backoffStrategy of
        constant com.amazonaws.retry.RetryPolicy@7ba74380 reached by 
    reading field com.amazonaws.ClientConfiguration.DEFAULT_RETRY_POLICY

com.oracle.svm.core.util.UserError$UserException: Unsupported features in 2 methods
Detailed message:
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  To see how this object got instantiated use --trace-object-instantiation=java.util.Random. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$EqualJitterBackoffStrategy.random of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$EqualJitterBackoffStrategy@2c620143 reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy.equalJitterBackoffStrategy of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy@689747af reached by 
    reading field com.amazonaws.retry.RetryPolicy.backoffStrategy of
        constant com.amazonaws.retry.RetryPolicy@7ba74380 reached by 
    reading field com.amazonaws.ClientConfiguration.DEFAULT_RETRY_POLICY
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  To see how this object got instantiated use --trace-object-instantiation=java.util.Random. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$FullJitterBackoffStrategy.random of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$FullJitterBackoffStrategy@22c9268f reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy.fullJitterBackoffStrategy of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy@689747af reached by 
    reading field com.amazonaws.retry.RetryPolicy.backoffStrategy of
        constant com.amazonaws.retry.RetryPolicy@7ba74380 reached by 
    reading field com.amazonaws.ClientConfiguration.DEFAULT_RETRY_POLICY

    at com.oracle.svm.core.util.UserError.abort(UserError.java:87)
    at com.oracle.svm.hosted.FallbackFeature.reportAsFallback(FallbackFeature.java:233)
    at com.oracle.svm.hosted.NativeImageGenerator.runPointsToAnalysis(NativeImageGenerator.java:759)
    at com.oracle.svm.hosted.NativeImageGenerator.doRun(NativeImageGenerator.java:529)
    at com.oracle.svm.hosted.NativeImageGenerator.run(NativeImageGenerator.java:488)
    at com.oracle.svm.hosted.NativeImageGeneratorRunner.buildImage(NativeImageGeneratorRunner.java:403)
    at com.oracle.svm.hosted.NativeImageGeneratorRunner.build(NativeImageGeneratorRunner.java:569)
    at com.oracle.svm.hosted.NativeImageGeneratorRunner.main(NativeImageGeneratorRunner.java:122)
    at com.oracle.svm.hosted.NativeImageGeneratorRunner$JDK9Plus.main(NativeImageGeneratorRunner.java:599)
Caused by: com.oracle.graal.pointsto.constraints.UnsupportedFeatureException: Unsupported features in 2 methods
Detailed message:
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  To see how this object got instantiated use --trace-object-instantiation=java.util.Random. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$EqualJitterBackoffStrategy.random of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$EqualJitterBackoffStrategy@2c620143 reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy.equalJitterBackoffStrategy of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy@689747af reached by 
    reading field com.amazonaws.retry.RetryPolicy.backoffStrategy of
        constant com.amazonaws.retry.RetryPolicy@7ba74380 reached by 
    reading field com.amazonaws.ClientConfiguration.DEFAULT_RETRY_POLICY
Error: Detected an instance of Random/SplittableRandom class in the image heap. Instances created during image generation have cached seed values and don't behave as expected.  To see how this object got instantiated use --trace-object-instantiation=java.util.Random. The object was probably created by a class initializer and is reachable from a static field. You can request class initialization at image runtime by using the option --initialize-at-run-time=<class-name>. Or you can write your own initialization methods and call them explicitly from your main entry point.
Trace: Object was reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$FullJitterBackoffStrategy.random of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$FullJitterBackoffStrategy@22c9268f reached by 
    reading field com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy.fullJitterBackoffStrategy of
        constant com.amazonaws.retry.PredefinedBackoffStrategies$SDKDefaultBackoffStrategy@689747af reached by 
    reading field com.amazonaws.retry.RetryPolicy.backoffStrategy of
        constant com.amazonaws.retry.RetryPolicy@7ba74380 reached by 
    reading field com.amazonaws.ClientConfiguration.DEFAULT_RETRY_POLICY

    at com.oracle.graal.pointsto.constraints.UnsupportedFeatures.report(UnsupportedFeatures.java:129)
    at com.oracle.svm.hosted.NativeImageGenerator.runPointsToAnalysis(NativeImageGenerator.java:756)
    ... 6 more

我在 macOS 12.1 上使用 Quarkus 2.6.1、OpenJDK 11.0.7 和 GraalVM 21.3.0 Java 11 CE 进行构建。有什么我想念的吗？是否需要包含其他设置或编译器标志来支持这一点？

Answer 1

正如错误中所述，GraalVM 不喜欢某些功能。它可能不是您的问题，就像不支持 GraalVM 的底层库（可能是 AWS 开发工具包）一样。话虽如此，您可以：

1. 从代码中删除有问题的函数并找到另一种处理方式。
2. 忽略使用本机并坚持使用 JVM 模式。

无论哪种方式，我都可能会将问题报告给图书馆的作者。请记住，GraalVM 是相当新的，报告这些错误有助于使工具成熟。