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# Author: Neil Soman neil@eucalyptus.com
#         Mitch Garnaat mgarnaat@eucalyptus.com

import euca2ools.commands.eucacommand
from boto.roboto.param import Param

class CreateSnapshot(euca2ools.commands.eucacommand.EucaCommand):

    Description = 'Creates a snapshot from an existing volume.'
    Options = [Param(name='description',
                     short_name='d', long_name='description',
                     optional=True, ptype='string',
                     doc='A description of the new snapshot')]
    Args = [Param(name='volume_id', ptype='string',
                  doc='unique name for a volume to snapshot.',
                  cardinality=1, optional=False)]

    def display_snapshot(self, snapshot):
        if not snapshot.id:
            return
        snapshot_string = '%s\t%s\t%s\t%s\t%s\t%s' % (snapshot.id,
                snapshot.volume_id, snapshot.status, snapshot.start_time,
                snapshot.progress, snapshot.description)
        print 'SNAPSHOT\t%s' % snapshot_string

    def main(self):
        conn = self.make_connection_cli()
        return self.make_request_cli(conn, 'create_snapshot',
                                     volume_id=self.volume_id,
                                     description=self.description)

    def main_cli(self):
        snapshot = self.main()
        self.display_snapshot(snapshot)