Enhanced copy-object

[drewr]

I needed the ability to perform a copy-in-place for the purposes of updating metadata on an object. This is S3's sanctioned (and only) way to update, for example, x-amz-meta headers.

I don't love the impl mainly because the args to copy-object are getting a bit unwieldy, but functionally it does what I want. Would appreciate you considering it or something like it in the codebase.

[weavejester]

Apologies for taking a few days to reply to this.

My plan regarding copy-object was to switch to a map of objects after four arguments, so something like:

(copy-object
  {:src  {:bucket "foo" :key "bar"}
   :dest {:bucket "foo" :key "baz"}
   :metadata {...}})

With maybe a few shortcuts for common cases where the source and destination buckets are the same:

(copy-object
  {:bucket "foo" :src "bar" :dest "baz"})

I'm also avoiding any functions that deal with Java AWS objects directly, like your set-object-meta function. I want to ensure that all public functions just take Clojure data-structures.