s3 user-metadata is inconsistent

[mthvedt]

So Amazonica is a really slick library, particularly the bean-to-Clojure map mapping. I'm writing a s3sync utility that I hope will be more flexible/functional than the commonly used s3sync.rb. Being able to express things as Clojure maps makes things work really well, but user-metadata requires a workaround if you're updating metadata that you pulled from s3.

In particular, :user-metadata is a keyword -> String mapping when downloaded, but must be a String -> String mapping when uploaded.

Example below

user=> (amazonica.aws.s3/get-object-metadata my-credentials my-website "404.html")
{:content-length 6452, :last-modified #<DateTime 2013-04-04T13:21:30.000-05:00>, :content-type "text/html", :raw-metadata {:Content-Type "text/html", :Accept-Ranges "bytes", :Last-Modified #<DateTime 2013-04-04T13:21:30.000-05:00>, :Content-Length 6452, :ETag "2d477e36be6f149b4c559591a6201774"}, :etag "2d477e36be6f149b4c559591a6201774", :user-metadata {:foo "bar"}}

user=> (amazonica.aws.s3/copy-object my-credentials :source-bucket-name my-website :destination-bucket-name my-website :source-key "404.html" :destination-key "404.html" :new-object-metadata {:content-type "text/html" :user-metadata {:foo "bar"}})
ClassCastException clojure.lang.Keyword cannot be cast to java.lang.String  com.amazonaws.services.s3.AmazonS3Client.populateRequestMetadata (AmazonS3Client.java:2634)

user=> (amazonica.aws.s3/copy-object my-credentials :source-bucket-name my-website :destination-bucket-name my-website :source-key "404.html" :destination-key "404.html" :new-object-metadata {:content-type "text/html" :user-metadata {"foo" "bar"}})
{:etag "2d477e36be6f149b4c559591a6201774", :last-modified-date #<DateTime 2013-04-04T13:21:58.000-05:00>}

[mcohen01]

fixed in version 0.1.5