Class: S3Proxy::App

Inherits:
Object
  • Object
show all
Defined in:
lib/s3_proxy/app.rb

Defined Under Namespace

Modules: Errors

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ App

Returns a new instance of App.



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# File 'lib/s3_proxy/app.rb', line 6

def initialize(options={})
  @options = options
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/s3_proxy/app.rb', line 10

def call(env)
  return Errors.method_not_allowed unless %w(GET HEAD).include?(env['REQUEST_METHOD'])
  return Errors.not_found if env['PATH_INFO'].empty?

  # When used as a forward proxy
  if env['HTTP_HOST'] =~ /(.+)\.s3\.amazonaws\.com/
    bucket = $1
    _, key = env['PATH_INFO'].split('/', 2)
  else
    _, bucket, key = env['PATH_INFO'].split('/', 3)
  end

  return Errors.not_found unless bucket && key

  req = {bucket: bucket, key: key}

  req[:if_match] = env['HTTP_IF_MATCH'] if env['HTTP_IF_MATCH']
  req[:if_none_match] = env['HTTP_IF_NONE_MATCH'] if env['HTTP_IF_NONE_MATCH']
  req[:if_modified_since] = env['HTTP_IF_MODIFIED_SINCE'] if env['HTTP_IF_MODIFIED_SINCE']
  req[:if_unmodified_since] = env['HTTP_IF_UNMODIFIED_SINCE'] if env['HTTP_UNMODIFIED_SINCE']

  head = s3.head_object(req)

  return Errors.not_found unless head

  case env['REQUEST_METHOD']
  when 'HEAD'
    gentle env, req, head
  when 'GET'
    if env['rack.hijack?']
      hijack env, req, head
    else
      gentle env, req, head
    end
  end

rescue Aws::S3::Errors::NoSuchKey, Aws::S3::Errors::NotFound
  return Errors.not_found

rescue Aws::S3::Errors::NotModified
  return Errors.not_modified

rescue Aws::S3::Errors::PreconditionFailed
  return Errors.precondition_failed

rescue NameError => e
  # https://github.com/aws/aws-sdk-core-ruby/pull/65
  raise e unless e.message == "wrong constant name 412Error"

  return Errors.precondition_failed
end