is_ecs()to check whether R is running in an Elastic Container Store (ECS) instance, and
ecs_metadata()to retrieve credentials from the container. (#2, h/t @jon-mago)
.onLoad()functionality added in 0.1.3 is now moved to
.onAttach()to comply with CRAN policy.
instance_document()that returns a list of the "instance identity document" information. This is useful for identifying the region an instance is running in.
is_ec2()during package load), the package attempts to set the
AWS_DEFAULT_REGIONenvironment variable if it has not already been specified. This helps handle request signing.
is_ec2()that returns a logical based on whether metadata is retrievable.
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