text: #   Copyright 2013 OpenStack Foundation
  #
  #   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.
  
  import uuid
  
  from oslo.config import cfg
  import webob
  
  from nova.compute import api as compute_api
  from nova.compute import vm_states
  from nova import context
  from nova import exception
  from nova.openstack.common import jsonutils
  from nova import test
  from nova.tests.api.openstack import fakes
  
  CONF = cfg.CONF
  CONF.import_opt('password_length', 'nova.utils')
  
  
  def fake_compute_api(*args, **kwargs):
      return True
  
  
  def fake_compute_api_get(self, context, instance_id):
      # BAD_UUID is something that does not exist
      if instance_id == 'BAD_UUID':
          raise exception.InstanceNotFound(instance_id=instance_id)
      else:
          return {
              'id': 1,
              'uuid': instance_id,
              'vm_state': vm_states.ACTIVE,
              'task_state': None, 'host': 'host1'
          }
  
  
  def fake_service_get_by_compute_host(self, context, host):
      if host == 'bad-host':
          raise exception.ComputeHostNotFound(host=host)
      else:
          return {
              'host_name': host,
              'service': 'compute',
              'zone': 'nova'
              }
  
  
  class EvacuateTest(test.NoDBTestCase):
  
      _methods = ('resize', 'evacuate')
  
      def setUp(self):
          super(EvacuateTest, self).setUp()
          self.stubs.Set(compute_api.API, 'get', fake_compute_api_get)
          self.stubs.Set(compute_api.HostAPI, 'service_get_by_compute_host',
                         fake_service_get_by_compute_host)
          self.UUID = uuid.uuid4()
          for _method in self._methods:
              self.stubs.Set(compute_api.API, _method, fake_compute_api)
  
      def _get_admin_context(self, user_id='fake', project_id='fake'):
          ctxt = context.get_admin_context()
          ctxt.user_id = user_id
          ctxt.project_id = project_id
          return ctxt
  
      def test_evacuate_with_valid_instance(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          req = webob.Request.blank('/v2/fake/servers/%s/action' % self.UUID)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'onSharedStorage': 'false',
                  'adminPass': 'MyNewPass'
                  }
              })
          req.content_type = 'application/json'
          res = req.get_response(app)
          self.assertEqual(res.status_int, 200)
  
      def test_evacuate_with_underscore_in_hostname(self):
          ctxt = context.get_admin_context()
          ctxt.user_id = 'fake'
          ctxt.project_id = 'fake'
          ctxt.is_admin = True
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          req = webob.Request.blank('/v2/fake/servers/%s/action' % self.UUID)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  # NOTE: The hostname grammar in RFC952 does not allow for
                  # underscores in hostnames. However, we should test that it
                  # is supported because it sometimes occurs in real systems.
                  'host': 'underscore_hostname',
                  'onSharedStorage': 'false',
                  'adminPass': 'MyNewPass'
                  }
              })
          req.content_type = 'application/json'
          res = req.get_response(app)
          self.assertEqual(res.status_int, 200)
  
      def test_evacuate_with_invalid_instance(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          req = webob.Request.blank('/v2/fake/servers/%s/action' % 'BAD_UUID')
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'onSharedStorage': 'false',
                  'adminPass': 'MyNewPass'
                  }
              })
          req.content_type = 'application/json'
          res = req.get_response(app)
          self.assertEqual(res.status_int, 404)
  
      def test_evacuate_with_active_service(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          req = webob.Request.blank('/v2/fake/servers/%s/action' % self.UUID)
          req.method = 'POST'
          req.content_type = 'application/json'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'onSharedStorage': 'false',
                  'adminPass': 'MyNewPass'
                  }
              })
  
          def fake_evacuate(*args, **kwargs):
              raise exception.ComputeServiceInUse("Service still in use")
  
          self.stubs.Set(compute_api.API, 'evacuate', fake_evacuate)
  
          res = req.get_response(app)
          self.assertEqual(res.status_int, 400)
  
      def test_evacuate_instance_with_no_target(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          req = webob.Request.blank('/v2/fake/servers/%s/action' % self.UUID)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'onSharedStorage': 'False',
                  'adminPass': 'MyNewPass'
              }
          })
          req.content_type = 'application/json'
          res = req.get_response(app)
          self.assertEqual(res.status_int, 400)
  
      def test_evacuate_instance_without_on_shared_storage(self):
          ctxt = context.get_admin_context()
          ctxt.user_id = 'fake'
          ctxt.project_id = 'fake'
          ctxt.is_admin = True
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          req = webob.Request.blank('/v2/fake/servers/%s/action' % self.UUID)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'adminPass': 'MyNewPass'
              }
          })
          req.content_type = 'application/json'
          res = req.get_response(app)
          self.assertEqual(res.status_int, 400)
  
      def test_evacuate_instance_with_bad_target(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          req = webob.Request.blank('/v2/fake/servers/%s/action' % self.UUID)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'bad-host',
                  'onSharedStorage': 'false',
                  'adminPass': 'MyNewPass'
                  }
              })
          req.content_type = 'application/json'
          res = req.get_response(app)
          self.assertEqual(res.status_int, 404)
  
      def test_evacuate_instance_with_target(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          uuid1 = self.UUID
          req = webob.Request.blank('/v2/fake/servers/%s/action' % uuid1)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'onSharedStorage': 'false',
                  'adminPass': 'MyNewPass'
              }
          })
          req.content_type = 'application/json'
  
          def fake_update(inst, context, instance,
                          task_state, expected_task_state):
              return None
  
          self.stubs.Set(compute_api.API, 'update', fake_update)
  
          resp = req.get_response(app)
          self.assertEqual(resp.status_int, 200)
          resp_json = jsonutils.loads(resp.body)
          self.assertEqual("MyNewPass", resp_json['adminPass'])
  
      def test_evacuate_shared_and_pass(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          uuid1 = self.UUID
          req = webob.Request.blank('/v2/fake/servers/%s/action' % uuid1)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'onSharedStorage': 'True',
                  'adminPass': 'MyNewPass'
              }
          })
          req.content_type = 'application/json'
  
          def fake_update(inst, context, instance,
                          task_state, expected_task_state):
              return None
  
          self.stubs.Set(compute_api.API, 'update', fake_update)
  
          res = req.get_response(app)
          self.assertEqual(res.status_int, 400)
  
      def test_evacuate_not_shared_pass_generated(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          uuid1 = self.UUID
          req = webob.Request.blank('/v2/fake/servers/%s/action' % uuid1)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'onSharedStorage': 'False',
              }
          })
  
          req.content_type = 'application/json'
  
          def fake_update(inst, context, instance,
                          task_state, expected_task_state):
              return None
  
          self.stubs.Set(compute_api.API, 'update', fake_update)
  
          resp = req.get_response(app)
          self.assertEqual(resp.status_int, 200)
          resp_json = jsonutils.loads(resp.body)
          self.assertEqual(CONF.password_length, len(resp_json['adminPass']))
  
      def test_evacuate_shared(self):
          ctxt = self._get_admin_context()
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          uuid1 = self.UUID
          req = webob.Request.blank('/v2/fake/servers/%s/action' % uuid1)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'onSharedStorage': 'True',
              }
          })
          req.content_type = 'application/json'
  
          def fake_update(inst, context, instance,
                          task_state, expected_task_state):
              return None
  
          self.stubs.Set(compute_api.API, 'update', fake_update)
  
          res = req.get_response(app)
          self.assertEqual(res.status_int, 200)
  
      def test_not_admin(self):
          ctxt = context.RequestContext('fake', 'fake', is_admin=False)
          app = fakes.wsgi_app(fake_auth_context=ctxt)
          uuid1 = self.UUID
          req = webob.Request.blank('/v2/fake/servers/%s/action' % uuid1)
          req.method = 'POST'
          req.body = jsonutils.dumps({
              'evacuate': {
                  'host': 'my-host',
                  'onSharedStorage': 'True',
              }
          })
          req.content_type = 'application/json'
          res = req.get_response(app)
          self.assertEqual(res.status_int, 403)
  