Undocumented requirement on arm64 architecture.

[daiglej]

When trying to run the lambda on the default x86_64 lambda architecture, it will crash with this error message.

[ERROR] Runtime.ImportModuleError: Unable to import module 'lambda_function': No module named 'ujson'
Traceback (most recent call last):
INIT_REPORT Init Duration: 586.43 ms	Phase: init	Status: error	Error Type: Runtime.ImportModuleError
[ERROR] Runtime.ImportModuleError: Unable to import module 'lambda_function': No module named 'ujson'
Traceback (most recent call last):
INIT_REPORT Init Duration: 1686.05 ms	Phase: invoke	Status: error	Error Type: Runtime.ImportModuleError
START RequestId: 44a81ead-dd98-4639-8081-b148d26de940 Version: $LATEST
END RequestId: 44a81ead-dd98-4639-8081-b148d26de940
REPORT RequestId: 44a81ead-dd98-4639-8081-b148d26de940	Duration: 1697.63 ms	Billed Duration: 1698 ms	Memory Size: 512 MB	Max Memory Used: 75 MB	Status: error	Error Type: Runtime.ImportModuleError

But as soon as you set the architecture to arm64 it works fine.
The last version that is working in x86_64 is 4.0.2, at the time of this writing the latest version is 4.5.0.

IMO, the issue is not much that it does not work with x86_64, but more that it is not documented in the manual installation guide.

Cheers!

[daiglej]

Example terraformcode that works :

resource "aws_lambda_function" "datadog_logs_forwarder_test" {
  filename         = "./content/aws-dd-forwarder-4.5.0.zip"
  function_name    = "datadog_logs_forwarder_test"
  role             = aws_iam_role.datadog_logs_forwarder.arn
  handler          = "lambda_function.lambda_handler"
  source_code_hash = filebase64sha256("./content/aws-dd-forwarder-4.5.0.zip")
  runtime          = "python3.12"
  memory_size      = "512"
  timeout          = "60"
  architectures    = ["arm64"] // This is required or else the function crash

  environment {
    variables = {
      DD_API_KEY_SECRET_ARN  = aws_secretsmanager_secret.dd_api_key.arn
      DD_SITE                = local.datadog_host
      DD_ENHANCED_METRICS    = "false"
      DD_S3_BUCKET_NAME      = module.datadog_logs_forwarder_cache.computed_bucket_name
      DD_STORE_FAILED_EVENTS = "true"
    }
  }
}

[james-devincentis-mfp]

Confirmed this is true with 4.5.0 and the x86_64 arch. Applied the same fix (using arm64) and no errors.

[niccrane]

We have also confirmed the same. Upgrading to 4.5.0 caused the import error. Forcing arm64 architecture resolved the issue.

[neovatar]

We encountered the same problem.

[raben2]

Confirming the same issue