def read()

in redis/cluster.py [0:0]

• 12 lines of code
• 11 McCabe index (conditional complexity)

    def read(self):
        """ """
        connection = self.connection
        for c in self.commands:
            # if there is a result on this command,
            # it means we ran into an exception
            # like a connection error. Trying to parse
            # a response on a connection that
            # is no longer open will result in a
            # connection error raised by redis-py.
            # but redis-py doesn't check in parse_response
            # that the sock object is
            # still set and if you try to
            # read from a closed connection, it will
            # result in an AttributeError because
            # it will do a readline() call on None.
            # This can have all kinds of nasty side-effects.
            # Treating this case as a connection error
            # is fine because it will dump
            # the connection object back into the
            # pool and on the next write, it will
            # explicitly open the connection and all will be well.
            if c.result is None:
                try:
                    c.result = self.parse_response(connection, c.args[0], **c.options)
                except (ConnectionError, TimeoutError) as e:
                    for c in self.commands:
                        c.result = e
                    return
                except RedisError:
                    c.result = sys.exc_info()[1]