AWS 加载客户端凭证

Question

我正在尝试编写我的第一个 Scala lambda，并在尝试加载我的 Phoenix Db 查询凭据时遇到问题。

我正在使用以下内容（已被其他开发人员使用）自动加载凭据。

    libraryDependencies += "org.scalikejdbc" %% "scalikejdbc" % "3.4.0"

    import software.amazon.awssdk.services.ec2.Ec2Client._

    val client = Ec2Client.builder()
              .region(Region.US_EAST_1)
              .build()
    val response = Try(client.describeInstances(request))

无论如何尝试引用客户端时，这会给我带来以下错误：

DEBUG software.amazon.awssdk.auth.credentials.AwsCredentialsProviderChain - Unable to load credentials from SystemPropertyCredentialsProvider(): Unable to load credentials from system settings. Access key must be specified either via environment variable (AWS_ACCESS_KEY_ID) or system property (aws.accessKeyId).
software.amazon.awssdk.core.exception.SdkClientException: Unable to load credentials from system settings. Access key must be specified either via environment variable (AWS_ACCESS_KEY_ID) or system property (aws.accessKeyId).
    at software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:97)
    at software.amazon.awssdk.auth.credentials.internal.SystemSettingsCredentialsProvider.resolveCredentials(SystemSettingsCredentialsProvider.java:58)
    at software.amazon.awssdk.auth.credentials.AwsCredentialsProviderChain.resolveCredentials(AwsCredentialsProviderChain.java:91)
    at software.amazon.awssdk.auth.credentials.internal.LazyAwsCredentialsProvider.resolveCredentials(LazyAwsCredentialsProvider.java:52)
    at software.amazon.awssdk.auth.credentials.DefaultCredentialsProvider.resolveCredentials(DefaultCredentialsProvider.java:98)
    at software.amazon.awssdk.awscore.client.handler.AwsClientHandlerUtils.createExecutionContext(AwsClientHandlerUtils.java:70)
    at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.createExecutionContext(AwsSyncClientHandler.java:68)
    at software.amazon.awssdk.core.client.handler.BaseSyncClientHandler.execute(BaseSyncClientHandler.java:68)
    at software.amazon.awssdk.core.client.handler.SdkSyncClientHandler.execute(SdkSyncClientHandler.java:44)
    at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.execute(AwsSyncClientHandler.java:55)
    at software.amazon.awssdk.services.ec2.DefaultEc2Client.describeInstances(DefaultEc2Client.java:9557)
...
...
...

现在，奇怪的是我可以为 DynamoDb 加载并查询就好了。

  val client: AmazonDynamoDB = AmazonDynamoDBClientBuilder.standard().build()
  val dynamoDB = new DynamoDB(client)  //this works just fine.

谁能建议我可能缺少什么来加载凭据？

谢谢

Answer 1

这不是错误，它是来自 AWS SDK 的内部调试消息。 它被记录在这里，如果你看上面几行，你会看到这个评论：

// Ignore any exceptions and move onto the next provider

不一定是最佳编码实践，但您不必担心。 我建议对software.amazon.awssdk禁用 DEBUG 级日志记录。

现在，奇怪的是我可以为 DynamoDb 加载并查询就好了

这是因为 SDK 在您创建 EC2 客户端时找到了凭证提供程序，并重用它来创建 DynamoDB 客户端。