81 lines
3.5 KiB
Python
81 lines
3.5 KiB
Python
# Copyright 2013 Kylin OS, Inc
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from django.urls import reverse
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from django.utils.translation import ugettext_lazy as _
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from horizon import exceptions
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from horizon import forms
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from horizon import messages
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from openstack_dashboard import api
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class LiveMigrateForm(forms.SelfHandlingForm):
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current_host = forms.CharField(label=_("Current Host"),
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required=False,
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widget=forms.TextInput(
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attrs={'readonly': 'readonly'}))
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host = forms.ThemableChoiceField(
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label=_("New Host"),
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help_text=_("Choose a Host to migrate to."))
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disk_over_commit = forms.BooleanField(label=_("Disk Over Commit"),
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initial=False, required=False)
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block_migration = forms.BooleanField(label=_("Block Migration"),
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initial=False, required=False)
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def __init__(self, request, *args, **kwargs):
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super(LiveMigrateForm, self).__init__(request, *args, **kwargs)
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initial = kwargs.get('initial', {})
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instance_id = initial.get('instance_id')
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self.fields['instance_id'] = forms.CharField(widget=forms.HiddenInput,
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initial=instance_id)
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self.fields['host'].choices = self.populate_host_choices(request,
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initial)
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def populate_host_choices(self, request, initial):
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hosts = initial.get('hosts')
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current_host = initial.get('current_host')
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host_list = [(host, host) for host in hosts if host != current_host]
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if host_list:
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host_list.insert(0, ("AUTO_SCHEDULE",
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_("Automatically schedule new host.")))
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else:
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host_list.insert(0, ("", _("No other hosts available")))
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return sorted(host_list)
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def handle(self, request, data):
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try:
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block_migration = data['block_migration']
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disk_over_commit = data['disk_over_commit']
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host = None if data['host'] == 'AUTO_SCHEDULE' else data['host']
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api.nova.server_live_migrate(request,
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data['instance_id'],
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host,
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block_migration=block_migration,
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disk_over_commit=disk_over_commit)
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msg = _('The instance is preparing the live migration '
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'to a new host.')
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messages.info(request, msg)
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return True
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except Exception:
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if data['host']:
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msg = _('Failed to live migrate instance to '
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'host "%s".') % data['host']
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else:
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msg = _('Failed to live migrate instance to a new host.')
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redirect = reverse('horizon:admin:instances:index')
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exceptions.handle(request, msg, redirect=redirect)
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