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delta-initial-value-minimum-project

This project provides the minimum configuration required to recreate the bug where the first set of counter metrics are not published.

This bug can be reproduced on v0.30.0 of AWS ODOT, which is v2 of the OpenTelemetry Lambda Extension. It can also be reproduced from a fresh build straight from the aws-otel-lambda repository.

The deployment is done via SAM CLI, with the following commands:

sam build --use-container
sam package --s3-prefix "delta-initial-value-minimum-project" --s3-bucket "s3-bucket-name-here" --output-template-file packaged.yaml
sam deploy --stack-name "delta-initial-value-minimum-project" --template packaged.yaml --capabilities CAPABILITY_IAM --s3-prefix "delta-initial-value-minimum-project" --s3-bucket "s3-bucket-name-here" --no-fail-on-empty-changeset

Expected Result

On the first invocation of the Lambda (cold), and with the emfexporter fixed as linked here, the line:

{"OTelLib":"james-otel-test","Version":"1","_aws":{"CloudWatchMetrics":[{"Namespace":"delta-initial-value-minimum-project-LambdaFunction-7Ee8R5yTPgdj","Dimensions":[["OTelLib"]],"Metrics":[{"Name":"arbitrary_counter","Unit":"count"}]}],"Timestamp":1688963396605},"arbitrary_counter":1}

the expected metrics are exported.

Actual Results

On the first invocation of the Lambda (cold) with v2 of the lambda layer, no metrics are logged in stdout.