Class: Fog::Connection

Inherits:
Object
  • Object
show all
Defined in:
lib/fog/connection.rb,
lib/fog/connection.rb

Constant Summary collapse

CHUNK_SIZE =

1 megabyte

1048576

Instance Method Summary collapse

Constructor Details

#initialize(url) ⇒ Connection

Returns a new instance of Connection.



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# File 'lib/fog/connection.rb', line 18

def initialize(url)
  @uri = URI.parse(url)
  @connection = TCPSocket.open(@uri.host, @uri.port)
  if @uri.scheme == 'https'
    @ssl_context = OpenSSL::SSL::SSLContext.new
    @ssl_context.verify_mode = OpenSSL::SSL::VERIFY_NONE
    @connection = OpenSSL::SSL::SSLSocket.new(@connection, @ssl_context)
    @connection.sync_close = true
    @connection.connect
  end
end

Instance Method Details

#request(params) ⇒ Object 



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# File 'lib/fog/connection.rb', line 30

def request(params)
  params[:path] ||= ''
  unless params[:path][0] == '/'
    params[:path] = '/' + params[:path].to_s
  end
  if params[:query] && !params[:query].empty?
    params[:path] << "?#{params[:query]}"
  end
  request = "#{params[:method]} #{params[:path]} HTTP/1.1\r\n"
  params[:headers] ||= {}
  params[:headers]['Host'] = params[:host]
  if params[:body] && !params[:headers]['Content-Length']
    params[:headers]['Content-Length'] = params[:body].length
  end
  for key, value in params[:headers]
    request << "#{key}: #{value}\r\n"
  end
  request << "\r\n"
  @connection.write(request)

  if params[:body]
    if params[:body].is_a?(String)
      body = StringIO.new(params[:body])
    else
      body = params[:body]
    end
    while chunk = body.read(CHUNK_SIZE)
      @connection.write(chunk)
    end
  end

  response = Fog::Response.new
  response.request = params
  response.status = @connection.readline[9..11].to_i
  if params[:expects] && params[:expects] != response.status
    error = true
  end
  while true
    data = @connection.readline.chomp!
    if data == ""
      break
    end
    header = data.split(': ')
    response.headers[capitalize(header[0])] = header[1]
  end

  if error || params[:parser]
    if error
      parser = Fog::Errors::Parser.new
    elsif params[:parser]
      parser = params[:parser]
    end
    body = Nokogiri::XML::SAX::PushParser.new(parser)
  elsif params[:block]
    body = nil
  else
    body = ''
  end

  unless params[:method] == 'HEAD'
    if response.headers['Content-Length']
      if error || !params[:block]
        body << @connection.read(response.headers['Content-Length'].to_i)
      else
        remaining = response.headers['Content-Length'].to_i
        while remaining > 0
          params[:block].call(@connection.read([CHUNK_SIZE, remaining].min))
          remaining -= CHUNK_SIZE;
        end
      end
    elsif response.headers['Transfer-Encoding'] == 'chunked'
      while true
        # 2 == "/r/n".length
        chunk_size = @connection.readline.chomp!.to_i(16) + 2
        chunk = @connection.read(chunk_size)[0...-2]
        if error || !params[:block]
          body << chunk
        else
          params[:block].call(chunk)
        end
        if chunk_size == 2
          break
        end
      end
    end
  end

  if parser
    body.finish
    response.body = parser.response
  else
    response.body = body
  end

  if error
    raise(Fog::Errors.status_error(params[:expects], response.status, response))
  else
    response
  end
end