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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 CreateVolume(euca2ools.commands.eucacommand.EucaCommand):

    Description = 'Creates a volume in a specified availability zone.'
    Options = [Param(name='size', short_name='s', long_name='size',
                     optional=True, ptype='integer',
                     doc='size of the volume (in GiB).'),
               Param(name='snapshot', long_name='snapshot',
                     optional=True, ptype='string',
                     doc="""snapshot id to create the volume from.
                     Either size or snapshot can be specified (not both)."""),
               Param(name='zone', short_name='z', long_name='zone',
                     optional=False, ptype='string',
                     doc='availability zone to create the volume in')]

    def display_volume(self, volume):
        if not volume.id:
            return
        volume_string = '%s' % volume.id
        if volume.size:
            volume_string += '\t%d' % volume.size
        if volume.snapshot_id:
            volume_string += '\t%s' % volume.snapshot_id
        if volume.zone:
            volume_string += '\t%s' % volume.zone
        volume_string += '\t%s\t%s' % (volume.status, volume.create_time)
        print 'VOLUME\t%s' % volume_string

    def main(self):
        if (self.size or self.snapshot) and self.zone:
            conn = self.make_connection_cli()
            return self.make_request_cli(conn, 'create_volume',
                                         size=self.size, zone=self.zone,
                                         snapshot=self.snapshot)
        else:
            msg = 'Either size or snapshot_id must be specified'
            self.display_error_and_exit(msg)

    def main_cli(self):
        volume = self.main()
        if volume:
            self.display_volume(volume)