opentelemetry-instrumentation-aws-lambda: invocation span name and kind do not follow semantic conventions

[herin049]

Describe your environment

OS: Amazon Linux
Python version: Python 3.11
Package version: 0.60b0.dev

What happened?

The OpenTelemetry semantic conventions for AWS Lambda state that:

For all events, a span with kind SERVER SHOULD be created corresponding to the function invocation unless stated otherwise below.

Furthermore, it also states that

Span name MUST be set to the function name from the Lambda Context unless stated otherwise.

The current implementation violates both of these requirements, it sets the span name to the name of the Python handler function instead of the Lambda function name itself. It also occasionally sets the span kind to CONSUMER when receiving events from SQS, SNS, DynamoDB or S3. (source)

Steps to Reproduce

Invoke an AWS Lambda function with the opentelemetry-instrumentation-aws-lambda Python package installed and observe the resulting Span names.

Expected Result

The Span kind should be always marked as SERVER and the Span name should be the invoked function name provided in the Context argument provided in the Lambda handler.

Would you like to implement a fix?

Yes

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