[尝试使用AWS CodeGuru时出现此错误

Question

我正在尝试使用AWS CodeGuru Profiler，由于某种原因，我遇到以下异常

04-15-2020 11:51:09 [Amazon-Profiler] INFO  software.amazon.codeguruprofilerjavaagent.CodeGuruProfilerSDKClient [configureAgent:69]    - Exception while calling agent orchestration.
java.lang.NullPointerException: Credentials must not be null.
    at software.amazon.awssdk.utils.Validate.paramNotNull(Validate.java:117)
    at software.amazon.awssdk.auth.signer.params.Aws4SignerParams.<init>(Aws4SignerParams.java:42)
    at software.amazon.awssdk.auth.signer.params.Aws4SignerParams$BuilderImpl.build(Aws4SignerParams.java:206)
    at software.amazon.awssdk.auth.signer.internal.BaseAws4Signer.sign(BaseAws4Signer.java:34)
    at software.amazon.awssdk.core.internal.http.pipeline.stages.SigningStage.signRequest(SigningStage.java:63)```


This is my code

new Profiler.Builder()
   .profilingGroupName("codeguru-profiling")
   .build().start();

Answer 1

如果未设置awsCredentialsProvider，则应该获得默认值。默认值由AWS凭证链确定https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/credentials.html

仔细检查您的凭据可通过其中一种方法（例如设置环境变量）。

这可能是CodeGuru SDK中的错误，毕竟它是非常新的。在这种情况下，您可以直接设置凭据：

new Profiler.Builder().profilingGroupName("my-profiling-group")
  .awsCredentialsProvider(new EnvironmentVariableCredentialsProvider()).build().start();

Answer 2

因此将awssdk从2.11.12降级到2.10.28解决了这个问题。我不知道为什么！