# Copyright 2009-2013 Eucalyptus Systems, Inc.
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from euca2ools.commands.ec2 import EC2Request
from requestbuilder import Arg, Filter


class DescribeRegions(EC2Request):
    DESCRIPTION = 'Display information about regions'
    ARGS = [Arg('RegionName', nargs='*', metavar='REGION',
                help='limit results to specific regions')]
    FILTERS = [Filter('endpoint'),
               Filter('region-name')]
    LIST_TAGS = ['regionInfo']

    def print_result(self, result):
        for region in result.get('regionInfo', []):
            print self.tabify(('REGION', region.get('regionName'),
                               region.get('regionEndpoint')))