tom-leahy
commented
9 years ago Here's what I see of the S3 code doing the web response parsing to S3Object (and metadata): https://github.com/aws/aws-sdk-java/blob/master/aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/internal/AbstractS3ResponseHandler.java (protected void populateObjectMetadata(HttpResponse response, ObjectMetadata metadata)) And what is in the Headers.S3_USER_METADATA_PREFIX variable (https://github.com/aws/aws-sdk-java/blob/master/aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/Headers.java): "x-amz-meta-"
I threw a breakpoint in and I'm seeing headers come back from fake-s3 in the format of "X-Amz-Meta-Foobar" - and this caps doesn't match AWS's startsWith check using the lowercase value and that's why I don't see any user metadata come through. Looking at the server.rb it looks like this header is being written as lowercase, is it possible that WEBrick is somehow doing something to the headers on the way out?
declension
pickhardt
gaul
l15k4
per https://github.com/aws/aws-sdk-java/issues/436
https://github.com/aws/aws-sdk-java/blob/master/aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/Headers.java#L34 and https://github.com/aws/aws-sdk-java/blob/master/aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/ObjectMetadata.java#L625
the aws java sdk expects headers to be in a particular case (not lowercase), even though headers are supposed to be case insensitive, and webrick makes all header keys lowercase.
I can't see how to get webrick to not lowercase all headers, and I'm unfamiliar with ruby generally, so I'm going to add a proxy for my own use that sets the case but it's pretty lame.