class Goliath::Rack::Cache

Public Instance Methods

post_process(env, status, headers, body) click to toggle source
# File lib/grass/goliath/rack/cache.rb, line 11
def post_process(env, status, headers, body)
  if body.is_a?(String) && (Grass.env == "production" || env.config['enable_cache_for_development'])
    # Generate ETag for body
    etag = etag_for(body)
    
    # Add ETag header
    headers['ETag'] = etag
    
    # Response with status 304 without body
    if env['HTTP_IF_NONE_MATCH'] == etag
      status = 304
      body = nil
    end
  end
  [status,headers,body]
end

Private Instance Methods

etag_for(content) click to toggle source

Generates ETag for given string

# File lib/grass/goliath/rack/cache.rb, line 31
def etag_for content
  Digest::MD5.hexdigest(content)
end