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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 AttachVolume(euca2ools.commands.eucacommand.EucaCommand):

    Description = 'Attaches an EBS volume to an instance.'
    Options = [Param(name='instance_id', short_name='i', long_name='instance',
                     optional=False, ptype='string',
                     doc="""unique id of a running instance to attach
                     the volume to."""),
               Param(name='device', short_name='d', long_name='device',
                     optional=False, ptype='string',
                     doc='local device name (inside the guest VM) to use.')]
    Args = [Param(name='volume_id', ptype='string',
                  doc='unique id for the volume to be attached',
                  cardinality=1, optional=False)]

    def main(self):
        conn = self.make_connection_cli()
        return self.make_request_cli(conn, 'attach_volume',
                                     volume_id=self.volume_id,
                                     instance_id=self.instance_id,
                                     device=self.device)

    def main_cli(self):
        status = self.main()
        if status:
            print 'VOLUME\t%s' % self.volume_id
        else:
            self.error_exit()