add command cache

# by command module

from cccli.command.list import Command_list

from cccli.command.expert import Command_expert

from cccli.command.cache import Command_cache

#!/usr/bin/env python

#coding=utf8

'''

CloudControl cache command

'''

from cccli.exception import *

from sjrpc.core.exceptions import *

from cccli.printer import Printer, color

from cccli.command.command import Command

class Command_cache(Command):

    '''Show server cache statistics'''

    def __call__(self, argv):

        try:

            d = self.cli.rpc.call("dbstats")

            for i,v in d.items():

                self.printer.out("%s: %s"%(i,v))

        except RpcError as e:

            raise cmdError("RPCError: %s"%str(e))