Is it possible to access the aws lambda context from this R runtime layer?

[DaveParr]

I see that in the runtime you create the EVENT_DATA from event_response which is driven from the event_url:

https://github.com/bakdata/aws-lambda-r-runtime/blob/fd664b3027e578425be5cd1607a3d8522ca2913f/runtime/src/runtime.R#L91-L92

Would this also expose the context of the invocation? Specifically the log_stream_name as outlined here in python? How would I access that? What would the variable be called?

https://docs.aws.amazon.com/lambda/latest/dg/python-context-object.html

I have a use case where I need to pass this log_stream_name over to the client system to log to help them with bug fixing. I'm looking for a variable that is a string set at a cold start similar to: 2019/12/10/[$LATEST]dc1cbcfbd4a24f0e9abcd3c8d44bc041

Any suggestions as to how I can access that from my lambda logic?

N.B I don't believe (maybe wrongly), that this is the "requestContext" of the body of the event. I've only seen that have info about the account id, and request id, but never (yet) the cloud watch log stream name mentioned in the docs above.

This may not be helpful, but I've found a rust custom runtime which seems to be an example of what I'm looking for, creating a string called log_stream_name:

https://github.com/awslabs/aws-lambda-rust-runtime/blob/master/lambda-runtime-core/src/context.rs

[DaveParr]

DW, worked it out from how you treat EVENT_DATA and how rust pulls it from the environment variable. Looks like behind the actual python object I am used to using, the info I need is just accessible from System level variables like so:

print(Sys.getenv("AWS_LAMBDA_LOG_STREAM_NAME"))