# Path: ddserver/utils/deps.py
# def require(**requirements):
#   ''' Decorator to inject requirements into a function.
# 
#       The decorated function is called with a named argument for each
#       specified requirement containing the exported instances.
#   '''
# 
#   exports = {name : Export.load(requirement)
#              for name, requirement
#              in requirements.iteritems()}
# 
#   def wrapper(func):
#     def wrapped(*args, **kwargs):
#       # Update the keyword arguments with the required instances
#       kwargs.update({name : export.instance
#                      for name, export
#                      in exports.iteritems()
#                      if name not in kwargs})
# 
#       return func(*args,
#                   **kwargs)
# 
#     wrapped.__name__ = func.__name__
# 
#     return wrapped
#   return wrapper
# 
# def extend(self, extend):
#   ''' Extends this export.
# 
#       The instance created by the wrapped factory is extended by passing the
#       created instance to the given extend function after creation.
# 
#       The extend function must accept the instance as its only argument. If
#       the function returns a value which is not None, the instance is replaced
#       with the returned value.
#   '''
# 
#   assert self.__instance is None
# 
#   self.__extends.append(extend)
# 
# Path: ddserver/utils/txtprot.py
# class LexerDeclaration(object):
#   ''' Declaration of a lexer. '''
# 
#   def __init__(self, messages, splitter = ' '):
#     ''' Declares a protocol.
# 
#         @param splitter: the character used to separate field in messages
#         @param messages: the messages declared for this protocol
#     '''
# 
#     self.__splitter = splitter
#     self.__messages = {message.tag : message
#                        for message
#                        in messages}
# 
# 
#   def __call__(self, line):
#     ''' Lex the line. '''
# 
#     # Strip of surrounding white spaces and tailing new line and split the
#     # message into parts separated by the splitting character
#     message = line.strip().split(self.__splitter)
# 
#     # Split message in tag and values
#     tag, values = message[0], message[1:]
# 
#     # Find message declaration for tag and lex the values using this message
#     # declaration or return None if the tag is unknown
#     if tag in self.__messages:
#       return self.__messages[tag].lex(values)
# 
#     else:
#       return None
# 
# 
#   def __getattr__(self, key):
#     ''' Returns a message declaration for the given key. '''
# 
#     return self.__messages[key]
# 
# class FormatterDeclaration(object):
#   def __init__(self, messages, splitter = ' '):
#     self.__splitter = splitter
#     self.__messages = {message.tag : message
#                        for message
#                        in messages}
# 
# 
#   def __call__(self, message):
#     # Find the message declaration for tag and format the values using this
#     # message declaration
#     load = self.__messages[message.tag].format(message)
# 
#     # Join the message parts separated by the splitter character
#     return self.__splitter.join([message.tag] + load)
# 
# 
# 
#   def __getattr__(self, key):
#     ''' Returns a message declaration for the given key. '''
# 
#     return self.__messages[key]
# 
# class MessageDeclaration(object):
#   ''' Declaration of a message type. '''
# 
# 
#   def __init__(self, tag, *fields):
#     ''' Declares a message.
# 
#         @param tag: the tag used to identify the message type
#         @param fields: the fields declared for the message
#     '''
# 
#     self.__tag = tag
#     self.__fields = fields
# 
#     self.__type = collections.namedtuple(self.__tag, ['tag'] + [field.name
#                                                                 for field
#                                                                 in self.__fields])
# 
# 
#   @property
#   def tag(self):
#     ''' Returns the tag. '''
# 
#     return self.__tag
# 
# 
#   def lex(self, load):
#     ''' Lex the message. '''
# 
#     return self(**{field.name : field.lex(value)
#                    for field, value
#                    in itertools.izip(self.__fields,
#                                      load)})
# 
# 
#   def format(self, message):
#     ''' Format the message. '''
# 
#     # Format the values in the message skipping the first value as it is the tag
#     return [field.format(value)
#             for field, value
#             in itertools.izip(self.__fields,
#                               message[1:])]
# 
# 
#   def __call__(self, *args, **kwargs):
#     return self.__type(tag = self.__tag, *args, **kwargs)
# 
# class FieldDeclaration(object):
#   ''' Declaration of a message field. '''
# 
#   def __init__(self, name, conv):
#     ''' Declares a field.
# 
#         @param name: the name of the field - this name is used as property name
#                      of parsed messages
#         @param conv: the type converter function used to parse the field - the
#                      function must accept a string and return a value
#     '''
# 
#     self.__name = name
#     self.__conv = conv
# 
# 
#   @property
#   def name(self):
#     ''' Returns the name of the field. '''
#     return self.__name
# 
# 
#   def lex(self, value):
#     ''' Lex the field. '''
# 
#     return self.__conv(value)
# 
# 
#   def format(self, value):
#     ''' Format the field. '''
# 
#     return str(value)


import sys
from ddserver.utils.deps import require, extend
from ddserver.utils.txtprot import (LexerDeclaration,
                                    FormatterDeclaration,
                                    MessageDeclaration,
                                    FieldDeclaration)
    if message is None:
      logger.error('recursor: Unknown tag: %s', line)
      continue

    logger.debug('recursor: Received message: %s', message)

    # Forward the message
    yield message


@require(logger='ddserver.utils.logger:Logger')
def send(cls,
         logger,
         **kwargs):
  """ Send responses to PowerDNS
  """

  # Create message
  message = cls(**kwargs)

  logger.debug('recursor: Responding message: %s', message)

  # Format the response
  line = formatter(message)

  # Send line to standard output
  sys.stdout.write(line + '\n')
  sys.stdout.flush()



# Path: ddserver/utils/deps.py
# def require(**requirements):
#   ''' Decorator to inject requirements into a function.
# 
#       The decorated function is called with a named argument for each
#       specified requirement containing the exported instances.
#   '''
# 
#   exports = {name : Export.load(requirement)
#              for name, requirement
#              in requirements.iteritems()}
# 
#   def wrapper(func):
#     def wrapped(*args, **kwargs):
#       # Update the keyword arguments with the required instances
#       kwargs.update({name : export.instance
#                      for name, export
#                      in exports.iteritems()
#                      if name not in kwargs})
# 
#       return func(*args,
#                   **kwargs)
# 
#     wrapped.__name__ = func.__name__
# 
#     return wrapped
#   return wrapper
# 
# def extend(self, extend):
#   ''' Extends this export.
# 
#       The instance created by the wrapped factory is extended by passing the
#       created instance to the given extend function after creation.
# 
#       The extend function must accept the instance as its only argument. If
#       the function returns a value which is not None, the instance is replaced
#       with the returned value.
#   '''
# 
#   assert self.__instance is None
# 
#   self.__extends.append(extend)
# 
# Path: ddserver/utils/txtprot.py
# class LexerDeclaration(object):
#   ''' Declaration of a lexer. '''
# 
#   def __init__(self, messages, splitter = ' '):
#     ''' Declares a protocol.
# 
#         @param splitter: the character used to separate field in messages
#         @param messages: the messages declared for this protocol
#     '''
# 
#     self.__splitter = splitter
#     self.__messages = {message.tag : message
#                        for message
#                        in messages}
# 
# 
#   def __call__(self, line):
#     ''' Lex the line. '''
# 
#     # Strip of surrounding white spaces and tailing new line and split the
#     # message into parts separated by the splitting character
#     message = line.strip().split(self.__splitter)
# 
#     # Split message in tag and values
#     tag, values = message[0], message[1:]
# 
#     # Find message declaration for tag and lex the values using this message
#     # declaration or return None if the tag is unknown
#     if tag in self.__messages:
#       return self.__messages[tag].lex(values)
# 
#     else:
#       return None
# 
# 
#   def __getattr__(self, key):
#     ''' Returns a message declaration for the given key. '''
# 
#     return self.__messages[key]
# 
# class FormatterDeclaration(object):
#   def __init__(self, messages, splitter = ' '):
#     self.__splitter = splitter
#     self.__messages = {message.tag : message
#                        for message
#                        in messages}
# 
# 
#   def __call__(self, message):
#     # Find the message declaration for tag and format the values using this
#     # message declaration
#     load = self.__messages[message.tag].format(message)
# 
#     # Join the message parts separated by the splitter character
#     return self.__splitter.join([message.tag] + load)
# 
# 
# 
#   def __getattr__(self, key):
#     ''' Returns a message declaration for the given key. '''
# 
#     return self.__messages[key]
# 
# class MessageDeclaration(object):
#   ''' Declaration of a message type. '''
# 
# 
#   def __init__(self, tag, *fields):
#     ''' Declares a message.
# 
#         @param tag: the tag used to identify the message type
#         @param fields: the fields declared for the message
#     '''
# 
#     self.__tag = tag
#     self.__fields = fields
# 
#     self.__type = collections.namedtuple(self.__tag, ['tag'] + [field.name
#                                                                 for field
#                                                                 in self.__fields])
# 
# 
#   @property
#   def tag(self):
#     ''' Returns the tag. '''
# 
#     return self.__tag
# 
# 
#   def lex(self, load):
#     ''' Lex the message. '''
# 
#     return self(**{field.name : field.lex(value)
#                    for field, value
#                    in itertools.izip(self.__fields,
#                                      load)})
# 
# 
#   def format(self, message):
#     ''' Format the message. '''
# 
#     # Format the values in the message skipping the first value as it is the tag
#     return [field.format(value)
#             for field, value
#             in itertools.izip(self.__fields,
#                               message[1:])]
# 
# 
#   def __call__(self, *args, **kwargs):
#     return self.__type(tag = self.__tag, *args, **kwargs)
# 
# class FieldDeclaration(object):
#   ''' Declaration of a message field. '''
# 
#   def __init__(self, name, conv):
#     ''' Declares a field.
# 
#         @param name: the name of the field - this name is used as property name
#                      of parsed messages
#         @param conv: the type converter function used to parse the field - the
#                      function must accept a string and return a value
#     '''
# 
#     self.__name = name
#     self.__conv = conv
# 
# 
#   @property
#   def name(self):
#     ''' Returns the name of the field. '''
#     return self.__name
# 
# 
#   def lex(self, value):
#     ''' Lex the field. '''
# 
#     return self.__conv(value)
# 
# 
#   def format(self, value):
#     ''' Format the field. '''
# 
#     return str(value)


# Path: ddserver/recursor/__main__.py
import sys
from ddserver.utils.deps import require, extend
from ddserver.utils.txtprot import (LexerDeclaration,
                                    FormatterDeclaration,
                                    MessageDeclaration,
                                    FieldDeclaration)

    if message is None:
      logger.error('recursor: Unknown tag: %s', line)
      continue

    logger.debug('recursor: Received message: %s', message)

    # Forward the message
    yield message


@require(logger='ddserver.utils.logger:Logger')
def send(cls,
         logger,
         **kwargs):
  """ Send responses to PowerDNS
  """

  # Create message
  message = cls(**kwargs)

  logger.debug('recursor: Responding message: %s', message)

  # Format the response
  line = formatter(message)

  # Send line to standard output
  sys.stdout.write(line + '\n')
  sys.stdout.flush()



@require(db='ddserver.db:Database')