Configure logstash to read logs from Amazon S3 bucket

I have been trying to configure logstash to read logs which are getting generated in my amazon S3 bucket, but have not been successful. Below are the details :

1. I have installed logstash on an ec2 instance
2. My logs are all gz files in the s3 bucket

3. The conf file looks like below :

   input { s3 { access_key_id => "MY_ACCESS_KEY_ID" bucket => "MY_BUCKET" region => "MY_REGION" secret_access_key => "MY_SECRET_ACESS_KEY" prefix => "/" type => "s3" add_field => { source => gzfiles } } }

   filter { if [type] == "s3" { csv { columns => [ "date", "time", "x-edge-location", "sc-bytes", "c-ip", "cs-method", "Host", "cs-uri-stem", "sc-status", "Referer", "User-Agent", "cs-uri-query", "Cookie", "x-edge-result-type", "x-edge-request-id" ] } } if([message] =~ /^#/) { drop{} } } output { elasticsearch { host => "ELASTICSEARCH_URL" protocol => "http" } }