# Copyright 2014 Eucalyptus Systems, Inc.
#
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from requestbuilder import Arg, MutuallyExclusiveArgList

from euca2ools.commands.ec2 import EC2Request


class ResetInstanceAttribute(EC2Request):
    DESCRIPTION = 'Reset an attribute of an instance to its default value'
    ARGS = [Arg('InstanceId', metavar='INSTANCE',
                help='ID of the instance to modify (required)'),
            MutuallyExclusiveArgList(
                Arg('--kernel', dest='Attribute', action='store_const',
                    const='kernel',
                    help="reset the instance's kernel image ID"),
                Arg('--ramdisk', dest='Attribute', action='store_const',
                    const='ramdisk',
                    help="reset the instance's ramdisk image ID"),
                Arg('--source-dest-check', dest='Attribute',
                    action='store_const', const='sourceDestCheck',
                    help="reset the instance's SourceDestCheck to true"))
            .required()]