Class: Protocol::Rack::Rewindable

Inherits:
HTTP::Middleware
  • Object
show all
Defined in:
lib/protocol/rack/rewindable.rb

Overview

Content-type driven input buffering, specific to the needs of ‘rack`.

Constant Summary collapse

BUFFERED_MEDIA_TYPES =

Media types that require buffering.

%r{
  application/x-www-form-urlencoded|
  multipart/form-data|
  multipart/related|
  multipart/mixed
}x
POST = 
'POST'

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Rewindable

Initialize the rewindable middleware.



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# File 'lib/protocol/rack/rewindable.rb', line 25

def initialize(app)
  super(app)
end

Instance Method Details

#call(request) ⇒ Object

Wrap the request body in a rewindable buffer if required.



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# File 'lib/protocol/rack/rewindable.rb', line 53

def call(request)
  if body = request.body and needs_rewind?(request)
    request.body = Protocol::HTTP::Body::Rewindable.new(body)
  end
  
  return super
end

#make_environment(request) ⇒ Object 



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# File 'lib/protocol/rack/rewindable.rb', line 46

def make_environment(request)
  @delegate.make_environment(request)
end

#needs_rewind?(request) ⇒ Boolean

Determine whether the request needs a rewindable body.

Returns:

  • (Boolean) 


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# File 'lib/protocol/rack/rewindable.rb', line 32

def needs_rewind?(request)
  content_type = request.headers['content-type']
  
  if request.method == POST and content_type.nil?
    return true
  end
  
  if BUFFERED_MEDIA_TYPES =~ content_type
    return true
  end
  
  return false
end