Trait for all acceptable Snowplow platforms
Tracker-specific self-describing JSON
Class for an event subject, where we view events as of the form Subject -> Verb -> Object
Tracker class
Module with parsing EC2-metadata logic
Module with parsing EC2-metadata logic
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html
Module with parsing GCE-metadata logic
Module with parsing GCE-metadata logic
https://cloud.google.com/compute/docs/storing-retrieving-metadata Unlike EC2 instance document, GCE does not provide an excerpt, but instad this module collect only meaningful properties
Backward-compatibility