Handle S3 event in Lambda
- Create a function that can be triggered by a URL request passing in parameters like this: ?name="Foo Bar"
- Create an object in S3 called something like "in/time.json" (with the current time)
- Create another function that will be triggered by a newaobject with a perfix "in/"
- Load that object and creare a new object called "out/time.json" using the same object name, but adding 3 new fields to it called
new_time: the time portion of the name of the object
end_time: the time when we read the object in the second function.
elapsed: the difference.