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)
end

Instance Method Details

#connection ⇒ Object 



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# File 'lib/fog/connection.rb', line 22

def connection
  if @connection && !@connection.closed?
    @connection
  else
    @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
end

#request(params) ⇒ Object 



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# File 'lib/fog/connection.rb', line 37

def request(params)
  params[:path] ||= ''
  unless params[:path][0..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)
      connection.write(params[:body])
    else
      while chunk = params[:body].read(CHUNK_SIZE)
        connection.write(chunk)
      end
    end
  end

  response = Fog::Response.new
  response.request = params
  response.status = connection.readline[9..11].to_i
  if params[:expects] && ![*params[:expects]].include?(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

  unless params[:method] == 'HEAD'
    if (error && params[:error_parser]) || params[:parser]
      if error
        parser = params[:error_parser]
      elsif params[:parser]
        parser = params[:parser]
      end
      body = Nokogiri::XML::SAX::PushParser.new(parser)
    elsif params[:block]
      body = nil
    else
      body = ''
    end

    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

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

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