Context is metadata associated with each invocation. If the handler
function accepts a context argument then it will
automatically receive at runtime a named list consisting of these values
along with the arguments in the body (if any). For example, a function
such as my_func(x, context) will receive the context
argument automatically. The context argument must be named
(... will not work).
The following context is made available as a named list:
aws_request_id - The identifier of the invocation
requestinvoked_function_arn – The Amazon Resource Name (ARN)
that’s used to invoke the function. Indicates if the invoker specified a
version number or alias.function_namefunction_versionmemory_limit_in_mblog_group_namelog_stream_nameThis section concerns future functionality for the
lambdr package. It is not yet implemented.
A particular event class (determined by invocation method)
can implement an extract_context method. This could be used
to say, include details about the HTTP request if an invocation is
coming via an API Gateway.
In all cases the context should be a named list. The new context is appended to the default values listed above.
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