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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
migration interface
"""
from novaclient import base
from novaclient.openstack.common.gettextutils import _
from novaclient.openstack.common.py3kcompat import urlutils
from novaclient import utils
class Migration(base.Resource):
def __repr__(self):
return "<Migration: %s>" % self.id
class MigrationManager(base.ManagerWithFind):
resource_class = Migration
def list(self, host=None, status=None, cell_name=None):
"""
Get a list of migrations.
:param host: (optional) filter migrations by host name.
:param status: (optional) filter migrations by status.
:param cell_name: (optional) filter migrations for a cell.
"""
opts = {}
if host:
opts['host'] = host
if status:
opts['status'] = status
if cell_name:
opts['cell_name'] = cell_name
# Transform the dict to a sequence of two-element tuples in fixed
# order, then the encoded string will be consistent in Python 2&3.
new_opts = sorted(opts.items(), key=lambda x: x[0])
query_string = "?%s" % urlutils.urlencode(new_opts) if new_opts else ""
return self._list("/os-migrations%s" % query_string, "migrations")
@utils.arg('--host',
dest='host',
metavar='<host>',
help=_('Fetch migrations for the given host.'))
@utils.arg('--status',
dest='status',
metavar='<status>',
help=_('Fetch migrations for the given status.'))
@utils.arg('--cell_name',
dest='cell_name',
metavar='<cell_name>',
help=_('Fetch migrations for the given cell_name.'))
def do_migration_list(cs, args):
"""Print a list of migrations."""
_print_migrations(cs.migrations.list(args.host, args.status,
args.cell_name))
def _print_migrations(migrations):
fields = ['Source Node', 'Dest Node', 'Source Compute', 'Dest Compute',
'Dest Host', 'Status', 'Instance UUID', 'Old Flavor',
'New Flavor', 'Created At', 'Updated At']
def old_flavor(migration):
return migration.old_instance_type_id
def new_flavor(migration):
return migration.new_instance_type_id
formatters = {'Old Flavor': old_flavor, 'New Flavor': new_flavor}
utils.print_list(migrations, fields, formatters)
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