# Mitaka NOVA API 接口开发
背景： OpenStack官方默认Resize接口支持local storage 不是很好，问题很多，因此重新定
制Resize接口,实现云主机套餐变更,比之前的接口提高了很多时间
### 配置 Resize 路由 vim /usr/lib/python2.7/site-packages/nova-13.1.0-py2.7.egg-info/entry_points.txt [nova.api.v21.extensions] instance_resize = nova.api.openstack.compute.instance_resize:InstanceResize access_ips = nova.api.openstack.compute.access_ips:AccessIPs admin_actions = nova.api.openstack.compute.admin_actions:AdminActions admin_password = nova.api.openstack.compute.admin_password:AdminPassword agents = nova.api.openstack.compute.agents:Agents aggregates = nova.api.openstack.compute.aggregates:Aggregates assisted_volume_snapshots = nova.api.openstack.compute.assisted_volume_snapshots:AssistedVolumeSnapshots attach_interfaces = nova.api.openstack.compute.attach_interfaces:AttachInterfaces availability_zone = nova.api.openstack.compute.availability_zone:AvailabilityZone baremetal_nodes = nova.api.openstack.compute.baremetal_nodes:BareMetalNodes block_device_mapping = nova.api.openstack.compute.block_device_mapping:BlockDeviceMapping cells = nova.api.openstack.compute.cells:Cells certificates = nova.api.openstack.compute.certificates:Certificates cloudpipe = nova.api.openstack.compute.cloudpipe:Cloudpipe config_drive = nova.api.openstack.compute.config_drive:ConfigDrive console_auth_tokens = nova.api.openstack.compute.console_auth_tokens:ConsoleAuthTokens console_output = nova.api.openstack.compute.console_output:ConsoleOutput### 定制API 接口
* Mitaka 接口开发目录与Havana 版本发生变化，所有的接口放在nova/api/openstack/compute/目录中，在此目录中创建Resize 接口
# Copyright 2013 Rackspace Hosting # All Rights Reserved. # # 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 # # # # 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. from webob import exc from nova.api.openstack import common from nova.api.openstack import extensions from nova.api.openstack import wsgi from nova import compute #from nova.i18n import _ from oslo_log import log as logging from nova.extend import api as extend_api from nova import utils LOG = logging.getLogger(__name__) ALIAS = "os-instance-resize" authorize = extensions.os_compute_authorizer(ALIAS) class InstanceResizeController(wsgi.Controller): def __init__(self): #super(InstanceResizeController, self).__init__() self.compute_api = compute.API(skip_policy_check=True) @wsgi.Controller.api_version("2.1", "2.20") def _get_instance(self, req, context, server_id): return common.get_instance(self.compute_api, context, server_id) @extensions.expected_errors(404) def index(self,req): """Returns the list of actions recorded for a given instance.""" context = req.environ["nova.context"] LOG.info("index.dir %s" %context) LOG.info("index.InstanceResizeController is ok") return "True" @extensions.expected_errors(404) def create(self,req,body): try: """Return data about the given instance action.""" context = req.environ["nova.context"] flavor = body[‘flavor‘] instance_uuid = body[‘instance_uuid‘] resize_api = extend_api.LocalAPI() result = resize_api.instance_resize(context,req,flavor,instance_uuid) #Reboot to instances body = {‘reboot‘: {‘type‘: ‘SOFT‘}} reboot_type = body[‘reboot‘][‘type‘].upper() instance = self._get_instance(req, context, instance_uuid) try: self.compute_api.reboot(context, instance, reboot_type) except exception.InstanceIsLocked as e: raise exc.HTTPConflict(explanation=e.format_message()) except exception.InstanceInvalidState as state_error: common.raise_http_conflict_for_instance_invalid_state(state_error, ‘reboot‘, id) LOG.info("create.InstanceResizeController is ok %s.%s.%s" % (result,flavor,instance_uuid)) return str(result ) except: return "False" LOG.error(traceback.format_exc()) @extensions.expected_errors(404) def delete(self,req): """Return data about the given instance action.""" LOG.info("delete.InstanceResizeController is ok") return "True" @extensions.expected_errors(404) def update(self,req): """Return data about the given instance action.""" LOG.info("update.InstanceResizeController is ok") return "True" @extensions.expected_errors(404) def show(self,req): """Return data about the given instance action.""" LOG.info("show.InstanceResizeController is ok") return "True" class InstanceResize(extensions.V21APIExtensionBase): """View a log of actions and events taken on an instance.""" name = "InstanceResize" alias = ALIAS version = 1 def get_resources(self): ext = extensions.ResourceExtension(ALIAS, InstanceResizeController(),) return [ext] def get_controller_extensions(self): """It‘s an abstract function V21APIExtensionBase and the extension will not be loaded without it. """ return []