Merge branch 'feature-abortable-operations-rebased'

Feature Abortable Operations
Make possible the implementation of abortable operations. Implement it for
shutdown.

circle/common/models.py

@@ -18,6 +18,7 @@
 from collections import deque
 from collections import deque
 from contextlib import contextmanager
 from contextlib import contextmanager
 from hashlib import sha224
 from hashlib import sha224
+from itertools import chain, imap
 from logging import getLogger
 from logging import getLogger
 from time import time
 from time import time
 
 
@@ -56,12 +57,52 @@ activity_context = contextmanager(activitycontextimpl)
 activity_code_separator = '.'
 activity_code_separator = '.'
 
 
 
 
+def has_prefix(activity_code, *prefixes):
+    """Determine whether the activity code has the specified prefix.
+
+    E.g.: has_prefix('foo.bar.buz', 'foo.bar') == True
+          has_prefix('foo.bar.buz', 'foo', 'bar') == True
+          has_prefix('foo.bar.buz', 'foo.bar', 'buz') == True
+          has_prefix('foo.bar.buz', 'foo', 'bar', 'buz') == True
+          has_prefix('foo.bar.buz', 'foo', 'buz') == False
+    """
+    equal = lambda a, b: a == b
+    act_code_parts = split_activity_code(activity_code)
+    prefixes = chain(*imap(split_activity_code, prefixes))
+    return all(imap(equal, act_code_parts, prefixes))
+
+
+def has_suffix(activity_code, *suffixes):
+    """Determine whether the activity code has the specified suffix.
+
+    E.g.: has_suffix('foo.bar.buz', 'bar.buz') == True
+          has_suffix('foo.bar.buz', 'bar', 'buz') == True
+          has_suffix('foo.bar.buz', 'foo.bar', 'buz') == True
+          has_suffix('foo.bar.buz', 'foo', 'bar', 'buz') == True
+          has_suffix('foo.bar.buz', 'foo', 'buz') == False
+    """
+    equal = lambda a, b: a == b
+    act_code_parts = split_activity_code(activity_code)
+    suffixes = list(chain(*imap(split_activity_code, suffixes)))
+    return all(imap(equal, reversed(act_code_parts), reversed(suffixes)))
+
+
 def join_activity_code(*args):
 def join_activity_code(*args):
     """Join the specified parts into an activity code.
     """Join the specified parts into an activity code.
+
+    :returns: Activity code string.
     """
     """
     return activity_code_separator.join(args)
     return activity_code_separator.join(args)
 
 
 
 
+def split_activity_code(activity_code):
+    """Split the specified activity code into its parts.
+
+    :returns: A list of activity code parts.
+    """
+    return activity_code.split(activity_code_separator)
+
+
 class ActivityModel(TimeStampedModel):
 class ActivityModel(TimeStampedModel):
     activity_code = CharField(max_length=100, verbose_name=_('activity code'))
     activity_code = CharField(max_length=100, verbose_name=_('activity code'))
     parent = ForeignKey('self', blank=True, null=True, related_name='children')
     parent = ForeignKey('self', blank=True, null=True, related_name='children')

circle/common/operations.py

@@ -15,9 +15,10 @@
 # You should have received a copy of the GNU General Public License along
 # You should have received a copy of the GNU General Public License along
 # with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
 # with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
 
 
+from inspect import getargspec
 from logging import getLogger
 from logging import getLogger
 
 
-from .models import activity_context
+from .models import activity_context, has_suffix
 
 
 from django.core.exceptions import PermissionDenied
 from django.core.exceptions import PermissionDenied
 
 
@@ -31,6 +32,7 @@ class Operation(object):
     async_queue = 'localhost.man'
     async_queue = 'localhost.man'
     required_perms = ()
     required_perms = ()
     do_not_call_in_templates = True
     do_not_call_in_templates = True
+    abortable = False
 
 
     def __call__(self, **kwargs):
     def __call__(self, **kwargs):
         return self.call(**kwargs)
         return self.call(**kwargs)
@@ -46,23 +48,50 @@ class Operation(object):
     def __prelude(self, kwargs):
     def __prelude(self, kwargs):
         """This method contains the shared prelude of call and async.
         """This method contains the shared prelude of call and async.
         """
         """
-        skip_auth_check = kwargs.setdefault('system', False)
-        user = kwargs.setdefault('user', None)
-        parent_activity = kwargs.pop('parent_activity', None)
+        defaults = {'parent_activity': None, 'system': False, 'user': None}
+
+        allargs = dict(defaults, **kwargs)  # all arguments
+        auxargs = allargs.copy()  # auxiliary (i.e. only for _operation) args
+        # NOTE: consumed items should be removed from auxargs, and no new items
+        # should be added to it
+
+        skip_auth_check = auxargs.pop('system')
+        user = auxargs.pop('user')
+        parent_activity = auxargs.pop('parent_activity')
+
+        # check for unexpected keyword arguments
+        argspec = getargspec(self._operation)
+        if argspec.keywords is None:  # _operation doesn't take ** args
+            unexpected_kwargs = set(auxargs) - set(argspec.args)
+            if unexpected_kwargs:
+                raise TypeError("Operation got unexpected keyword arguments: "
+                                "%s" % ", ".join(unexpected_kwargs))
 
 
         if not skip_auth_check:
         if not skip_auth_check:
             self.check_auth(user)
             self.check_auth(user)
         self.check_precond()
         self.check_precond()
-        return self.create_activity(parent=parent_activity, user=user)
 
 
-    def _exec_op(self, activity, user, **kwargs):
+        activity = self.create_activity(parent=parent_activity, user=user)
+
+        return activity, allargs, auxargs
+
+    def _exec_op(self, allargs, auxargs):
         """Execute the operation inside the specified activity's context.
         """Execute the operation inside the specified activity's context.
         """
         """
-        with activity_context(activity, on_abort=self.on_abort,
+        # compile arguments for _operation
+        argspec = getargspec(self._operation)
+        if argspec.keywords is not None:  # _operation takes ** args
+            arguments = allargs.copy()
+        else:  # _operation doesn't take ** args
+            arguments = {k: v for (k, v) in allargs.iteritems()
+                         if k in argspec.args}
+        arguments.update(auxargs)
+
+        with activity_context(allargs['activity'], on_abort=self.on_abort,
                               on_commit=self.on_commit):
                               on_commit=self.on_commit):
-            return self._operation(activity=activity, user=user, **kwargs)
+            return self._operation(**arguments)
 
 
-    def _operation(self, activity, user, system, **kwargs):
+    def _operation(self, **kwargs):
         """This method is the operation's particular implementation.
         """This method is the operation's particular implementation.
 
 
         Deriving classes should implement this method.
         Deriving classes should implement this method.
@@ -82,12 +111,10 @@ class Operation(object):
         logger.info("%s called asynchronously on %s with the following "
         logger.info("%s called asynchronously on %s with the following "
                     "parameters: %r", self.__class__.__name__, self.subject,
                     "parameters: %r", self.__class__.__name__, self.subject,
                     kwargs)
                     kwargs)
-        activity = self.__prelude(kwargs)
-        return self.async_operation.apply_async(args=(self.id,
-                                                      self.subject.pk,
-                                                      activity.pk),
-                                                kwargs=kwargs,
-                                                queue=self.async_queue)
+        activity, allargs, auxargs = self.__prelude(kwargs)
+        return self.async_operation.apply_async(
+            args=(self.id, self.subject.pk, activity.pk, allargs, auxargs, ),
+            queue=self.async_queue)
 
 
     def call(self, **kwargs):
     def call(self, **kwargs):
         """Execute the operation (synchronously).
         """Execute the operation (synchronously).
@@ -105,8 +132,9 @@ class Operation(object):
         logger.info("%s called (synchronously) on %s with the following "
         logger.info("%s called (synchronously) on %s with the following "
                     "parameters: %r", self.__class__.__name__, self.subject,
                     "parameters: %r", self.__class__.__name__, self.subject,
                     kwargs)
                     kwargs)
-        activity = self.__prelude(kwargs)
-        return self._exec_op(activity=activity, **kwargs)
+        activity, allargs, auxargs = self.__prelude(kwargs)
+        allargs['activity'] = activity
+        return self._exec_op(allargs, auxargs)
 
 
     def check_precond(self):
     def check_precond(self):
         pass
         pass
@@ -160,6 +188,19 @@ class OperatedMixin(object):
             else:
             else:
                 yield op
                 yield op
 
 
+    def get_operation_from_activity_code(self, activity_code):
+        """Get an instance of the Operation corresponding to the specified
+           activity code.
+
+        :returns: A bound instance of an operation, or None if no matching
+                  operation could be found.
+        """
+        for op in getattr(self, operation_registry_name, {}).itervalues():
+            if has_suffix(activity_code, op.activity_code_suffix):
+                return op(self)
+        else:
+            return None
+
 
 
 def register_operation(op_cls, op_id=None, target_cls=None):
 def register_operation(op_cls, op_id=None, target_cls=None):
     """Register the specified operation with the target class.
     """Register the specified operation with the target class.

circle/common/tests/test_operations.py

@@ -75,3 +75,41 @@ class OperationTestCase(TestCase):
                     patch.object(Operation, 'create_activity'), \
                     patch.object(Operation, 'create_activity'), \
                     patch.object(Operation, '_exec_op'):
                     patch.object(Operation, '_exec_op'):
                 op.call(system=True)
                 op.call(system=True)
+
+    def test_no_exception_for_more_arguments_when_operation_takes_kwargs(self):
+        class KwargOp(Operation):
+            activity_code_suffix = 'test'
+            id = 'test'
+
+            def _operation(self, **kwargs):
+                pass
+
+        op = KwargOp(MagicMock())
+        with patch.object(KwargOp, 'create_activity'), \
+                patch.object(KwargOp, '_exec_op'):
+            op.call(system=True, foo=42)
+
+    def test_exception_for_unexpected_arguments(self):
+        class TestOp(Operation):
+            activity_code_suffix = 'test'
+            id = 'test'
+
+            def _operation(self):
+                pass
+
+        op = TestOp(MagicMock())
+        with patch.object(TestOp, 'create_activity'), \
+                patch.object(TestOp, '_exec_op'):
+            self.assertRaises(TypeError, op.call, system=True, foo=42)
+
+    def test_exception_for_missing_arguments(self):
+        class TestOp(Operation):
+            activity_code_suffix = 'test'
+            id = 'test'
+
+            def _operation(self, foo):
+                pass
+
+        op = TestOp(MagicMock())
+        with patch.object(TestOp, 'create_activity'):
+            self.assertRaises(TypeError, op.call, system=True)

circle/dashboard/templates/dashboard/vm-detail/_activity-timeline.html

@@ -9,6 +9,14 @@
     {{ a.get_readable_name }}{% if user.is_superuser %}</a>{% endif %}
     {{ a.get_readable_name }}{% if user.is_superuser %}</a>{% endif %}
 </strong>
 </strong>
 {{ a.started|date:"Y-m-d H:i" }}{% if a.user %}, {{ a.user }}{% endif %}
 {{ a.started|date:"Y-m-d H:i" }}{% if a.user %}, {{ a.user }}{% endif %}
+{% if a.is_abortable_for_user %}
+<form action="{{ a.instance.get_absolute_url }}" method="POST" class="pull-right">
+  {% csrf_token %}
+  <input type="hidden" name="abort_operation"/>
+  <input type="hidden" name="activity" value="{{ a.pk }}"/>
+  <button class="btn btn-danger btn-xs"><i class="icon-bolt"></i> {% trans "Abort" %}</button>
+</form>
+{% endif %}
   {% if a.children.count > 0 %}
   {% if a.children.count > 0 %}
     <div class="sub-timeline">
     <div class="sub-timeline">
       {% for s in a.children.all %}
       {% for s in a.children.all %}

circle/dashboard/views.py

@@ -224,11 +224,7 @@ class VmDetailView(CheckedDetailView):
         })
         })
 
 
         # activity data
         # activity data
-        context['activities'] = (
-            InstanceActivity.objects.filter(
-                instance=self.object, parent=None).
-            order_by('-started').
-            select_related('user').prefetch_related('children'))
+        context['activities'] = self.object.get_activities(self.request.user)
 
 
         context['vlans'] = Vlan.get_objects_with_level(
         context['vlans'] = Vlan.get_objects_with_level(
             'user', self.request.user
             'user', self.request.user
@@ -260,6 +256,7 @@ class VmDetailView(CheckedDetailView):
             'to_remove': self.__remove_tag,
             'to_remove': self.__remove_tag,
             'port': self.__add_port,
             'port': self.__add_port,
             'new_network_vlan': self.__new_network,
             'new_network_vlan': self.__new_network,
+            'abort_operation': self.__abort_operation,
         }
         }
         for k, v in options.iteritems():
         for k, v in options.iteritems():
             if request.POST.get(k) is not None:
             if request.POST.get(k) is not None:
@@ -445,6 +442,16 @@ class VmDetailView(CheckedDetailView):
         return redirect("%s#network" % reverse_lazy(
         return redirect("%s#network" % reverse_lazy(
             "dashboard.views.detail", kwargs={'pk': self.object.pk}))
             "dashboard.views.detail", kwargs={'pk': self.object.pk}))
 
 
+    def __abort_operation(self, request):
+        self.object = self.get_object()
+
+        activity = get_object_or_404(InstanceActivity,
+                                     pk=request.POST.get("activity"))
+        if not activity.is_abortable_for(request.user):
+            raise PermissionDenied()
+        activity.abort()
+        return redirect("%s#activity" % self.object.get_absolute_url())
+
 
 
 class OperationView(DetailView):
 class OperationView(DetailView):
 
 
@@ -1736,9 +1743,7 @@ def vm_activity(request, pk):
     if only_status == "false":  # instance activity
     if only_status == "false":  # instance activity
         context = {
         context = {
             'instance': instance,
             'instance': instance,
-            'activities': InstanceActivity.objects.filter(
-                instance=instance, parent=None
-            ).order_by('-started').select_related(),
+            'activities': instance.get_activities(request.user),
             'ops': get_operations(instance, request.user),
             'ops': get_operations(instance, request.user),
         }
         }
 
 
@@ -2343,10 +2348,8 @@ class InstanceActivityDetail(SuperuserRequiredMixin, DetailView):
 
 
     def get_context_data(self, **kwargs):
     def get_context_data(self, **kwargs):
         ctx = super(InstanceActivityDetail, self).get_context_data(**kwargs)
         ctx = super(InstanceActivityDetail, self).get_context_data(**kwargs)
-        ctx['activities'] = (
-            self.object.instance.activity_log.filter(parent=None).
-            order_by('-started').select_related('user').
-            prefetch_related('children'))
+        ctx['activities'] = self.object.instance.get_activities(
+            self.request.user)
         return ctx
         return ctx
 
 
 
 

circle/vm/models/activity.py

@@ -20,15 +20,19 @@ from contextlib import contextmanager
 from logging import getLogger
 from logging import getLogger
 
 
 from celery.signals import worker_ready
 from celery.signals import worker_ready
+from celery.contrib.abortable import AbortableAsyncResult
+
 from django.core.urlresolvers import reverse
 from django.core.urlresolvers import reverse
 from django.db.models import CharField, ForeignKey
 from django.db.models import CharField, ForeignKey
 from django.utils import timezone
 from django.utils import timezone
 from django.utils.translation import ugettext_lazy as _
 from django.utils.translation import ugettext_lazy as _
 
 
 from common.models import (
 from common.models import (
-    ActivityModel, activitycontextimpl, join_activity_code,
+    ActivityModel, activitycontextimpl, join_activity_code, split_activity_code
 )
 )
 
 
+from manager.mancelery import celery
+
 
 
 logger = getLogger(__name__)
 logger = getLogger(__name__)
 
 
@@ -66,19 +70,8 @@ class InstanceActivity(ActivityModel):
             return '{}({})'.format(self.activity_code,
             return '{}({})'.format(self.activity_code,
                                    self.instance)
                                    self.instance)
 
 
-    def get_absolute_url(self):
-        return reverse('dashboard.views.vm-activity', args=[self.pk])
-
-    def get_readable_name(self):
-        return self.activity_code.split('.')[-1].replace('_', ' ').capitalize()
-
-    def get_status_id(self):
-        if self.succeeded is None:
-            return 'wait'
-        elif self.succeeded:
-            return 'success'
-        else:
-            return 'failed'
+    def abort(self):
+        AbortableAsyncResult(self.task_uuid, backend=celery.backend).abort()
 
 
     @classmethod
     @classmethod
     def create(cls, code_suffix, instance, task_uuid=None, user=None,
     def create(cls, code_suffix, instance, task_uuid=None, user=None,
@@ -108,6 +101,51 @@ class InstanceActivity(ActivityModel):
         act.save()
         act.save()
         return act
         return act
 
 
+    def get_absolute_url(self):
+        return reverse('dashboard.views.vm-activity', args=[self.pk])
+
+    def get_readable_name(self):
+        activity_code_last_suffix = split_activity_code(self.activity_code)[-1]
+        return activity_code_last_suffix.replace('_', ' ').capitalize()
+
+    def get_status_id(self):
+        if self.succeeded is None:
+            return 'wait'
+        elif self.succeeded:
+            return 'success'
+        else:
+            return 'failed'
+
+    @property
+    def is_abortable(self):
+        """Can the activity be aborted?
+
+        :returns: True if the activity can be aborted; otherwise, False.
+        """
+        op = self.instance.get_operation_from_activity_code(self.activity_code)
+        return self.task_uuid and op and op.abortable and not self.finished
+
+    def is_abortable_for(self, user):
+        """Can the given user abort the activity?
+        """
+
+        return self.is_abortable and (
+            user.is_superuser or user in (self.instance.owner, self.user))
+
+    @property
+    def is_aborted(self):
+        """Has the activity been aborted?
+
+        :returns: True if the activity has been aborted; otherwise, False.
+        """
+        return self.task_uuid and AbortableAsyncResult(self.task_uuid
+                                                       ).is_aborted()
+
+    def save(self, *args, **kwargs):
+        ret = super(InstanceActivity, self).save(*args, **kwargs)
+        self.instance._update_status()
+        return ret
+
     @contextmanager
     @contextmanager
     def sub_activity(self, code_suffix, on_abort=None, on_commit=None,
     def sub_activity(self, code_suffix, on_abort=None, on_commit=None,
                      task_uuid=None, concurrency_check=True):
                      task_uuid=None, concurrency_check=True):
@@ -116,11 +154,6 @@ class InstanceActivity(ActivityModel):
         act = self.create_sub(code_suffix, task_uuid, concurrency_check)
         act = self.create_sub(code_suffix, task_uuid, concurrency_check)
         return activitycontextimpl(act, on_abort=on_abort, on_commit=on_commit)
         return activitycontextimpl(act, on_abort=on_abort, on_commit=on_commit)
 
 
-    def save(self, *args, **kwargs):
-        ret = super(InstanceActivity, self).save(*args, **kwargs)
-        self.instance._update_status()
-        return ret
-
 
 
 @contextmanager
 @contextmanager
 def instance_activity(code_suffix, instance, on_abort=None, on_commit=None,
 def instance_activity(code_suffix, instance, on_abort=None, on_commit=None,

circle/vm/models/instance.py

@@ -17,11 +17,14 @@
 
 
 from __future__ import absolute_import, unicode_literals
 from __future__ import absolute_import, unicode_literals
 from datetime import timedelta
 from datetime import timedelta
+from functools import partial
 from importlib import import_module
 from importlib import import_module
 from logging import getLogger
 from logging import getLogger
 from string import ascii_lowercase
 from string import ascii_lowercase
 from warnings import warn
 from warnings import warn
 
 
+from celery.exceptions import TimeoutError
+from celery.contrib.abortable import AbortableAsyncResult
 import django.conf
 import django.conf
 from django.contrib.auth.models import User
 from django.contrib.auth.models import User
 from django.core import signing
 from django.core import signing
@@ -832,13 +835,20 @@ class Instance(AclBase, VirtualMachineDescModel, StatusModel, OperatedMixin,
                                            queue=queue_name
                                            queue=queue_name
                                            ).get(timeout=timeout)
                                            ).get(timeout=timeout)
 
 
-    def shutdown_vm(self, timeout=120):
+    def shutdown_vm(self, task=None, step=5):
         queue_name = self.get_remote_queue_name('vm')
         queue_name = self.get_remote_queue_name('vm')
         logger.debug("RPC Shutdown at queue: %s, for vm: %s.", queue_name,
         logger.debug("RPC Shutdown at queue: %s, for vm: %s.", queue_name,
                      self.vm_name)
                      self.vm_name)
-        return vm_tasks.shutdown.apply_async(kwargs={'name': self.vm_name},
-                                             queue=queue_name
-                                             ).get(timeout=timeout)
+        remote = vm_tasks.shutdown.apply_async(kwargs={'name': self.vm_name},
+                                               queue=queue_name)
+
+        while True:
+            try:
+                return remote.get(timeout=step)
+            except TimeoutError:
+                if task is not None and task.is_aborted():
+                    AbortableAsyncResult(remote.id).abort()
+                    raise Exception("Shutdown aborted by user.")
 
 
     def suspend_vm(self, timeout=60):
     def suspend_vm(self, timeout=60):
         queue_name = self.get_remote_queue_name('vm')
         queue_name = self.get_remote_queue_name('vm')
@@ -891,3 +901,13 @@ class Instance(AclBase, VirtualMachineDescModel, StatusModel, OperatedMixin,
             'PENDING': 'icon-rocket',
             'PENDING': 'icon-rocket',
             'DESTROYED': 'icon-trash',
             'DESTROYED': 'icon-trash',
             'MIGRATING': 'icon-truck'}.get(self.status, 'icon-question-sign')
             'MIGRATING': 'icon-truck'}.get(self.status, 'icon-question-sign')
+
+    def get_activities(self, user=None):
+        acts = (self.activity_log.filter(parent=None).
+                order_by('-started').
+                select_related('user').prefetch_related('children'))
+        if user is not None:
+            for i in acts:
+                i.is_abortable_for_user = partial(i.is_abortable_for,
+                                                  user=user)
+        return acts

circle/vm/operations.py

@@ -26,7 +26,9 @@ from django.utils.translation import ugettext_lazy as _
 from celery.exceptions import TimeLimitExceeded
 from celery.exceptions import TimeLimitExceeded
 
 
 from common.operations import Operation, register_operation
 from common.operations import Operation, register_operation
-from .tasks.local_tasks import async_instance_operation, async_node_operation
+from .tasks.local_tasks import (
+    abortable_async_instance_operation, abortable_async_node_operation,
+)
 from .models import (
 from .models import (
     Instance, InstanceActivity, InstanceTemplate, Interface, Node,
     Instance, InstanceActivity, InstanceTemplate, Interface, Node,
     NodeActivity,
     NodeActivity,
@@ -38,7 +40,7 @@ logger = getLogger(__name__)
 
 
 class InstanceOperation(Operation):
 class InstanceOperation(Operation):
     acl_level = 'owner'
     acl_level = 'owner'
-    async_operation = async_instance_operation
+    async_operation = abortable_async_instance_operation
     host_cls = Instance
     host_cls = Instance
 
 
     def __init__(self, instance):
     def __init__(self, instance):
@@ -126,7 +128,7 @@ class DeployOperation(InstanceOperation):
     def on_commit(self, activity):
     def on_commit(self, activity):
         activity.resultant_state = 'RUNNING'
         activity.resultant_state = 'RUNNING'
 
 
-    def _operation(self, activity, user, system, timeout=15):
+    def _operation(self, activity, timeout=15):
         # Allocate VNC port and host node
         # Allocate VNC port and host node
         self.instance.allocate_vnc_port()
         self.instance.allocate_vnc_port()
         self.instance.allocate_node()
         self.instance.allocate_node()
@@ -162,7 +164,7 @@ class DestroyOperation(InstanceOperation):
     def on_commit(self, activity):
     def on_commit(self, activity):
         activity.resultant_state = 'DESTROYED'
         activity.resultant_state = 'DESTROYED'
 
 
-    def _operation(self, activity, user, system):
+    def _operation(self, activity):
         if self.instance.node:
         if self.instance.node:
             # Destroy networks
             # Destroy networks
             with activity.sub_activity('destroying_net'):
             with activity.sub_activity('destroying_net'):
@@ -200,7 +202,7 @@ class MigrateOperation(InstanceOperation):
     name = _("migrate")
     name = _("migrate")
     description = _("Live migrate running VM to another node.")
     description = _("Live migrate running VM to another node.")
 
 
-    def _operation(self, activity, user, system, to_node=None, timeout=120):
+    def _operation(self, activity, to_node=None, timeout=120):
         if not to_node:
         if not to_node:
             with activity.sub_activity('scheduling') as sa:
             with activity.sub_activity('scheduling') as sa:
                 to_node = self.instance.select_node()
                 to_node = self.instance.select_node()
@@ -230,7 +232,7 @@ class RebootOperation(InstanceOperation):
     name = _("reboot")
     name = _("reboot")
     description = _("Reboot virtual machine with Ctrl+Alt+Del signal.")
     description = _("Reboot virtual machine with Ctrl+Alt+Del signal.")
 
 
-    def _operation(self, activity, user, system, timeout=5):
+    def _operation(self, timeout=5):
         self.instance.reboot_vm(timeout=timeout)
         self.instance.reboot_vm(timeout=timeout)
 
 
 
 
@@ -280,7 +282,7 @@ class ResetOperation(InstanceOperation):
     name = _("reset")
     name = _("reset")
     description = _("Reset virtual machine (reset button).")
     description = _("Reset virtual machine (reset button).")
 
 
-    def _operation(self, activity, user, system, timeout=5):
+    def _operation(self, timeout=5):
         self.instance.reset_vm(timeout=timeout)
         self.instance.reset_vm(timeout=timeout)
 
 
 register_operation(ResetOperation)
 register_operation(ResetOperation)
@@ -295,6 +297,7 @@ class SaveAsTemplateOperation(InstanceOperation):
         Template can be shared with groups and users.
         Template can be shared with groups and users.
         Users can instantiate Virtual Machines from Templates.
         Users can instantiate Virtual Machines from Templates.
         """)
         """)
+    abortable = True
 
 
     @staticmethod
     @staticmethod
     def _rename(name):
     def _rename(name):
@@ -307,11 +310,11 @@ class SaveAsTemplateOperation(InstanceOperation):
         return "%s v%d" % (name, v)
         return "%s v%d" % (name, v)
 
 
     def _operation(self, activity, user, system, timeout=300, name=None,
     def _operation(self, activity, user, system, timeout=300, name=None,
-                   with_shutdown=True, **kwargs):
+                   with_shutdown=True, task=None, **kwargs):
         if with_shutdown:
         if with_shutdown:
             try:
             try:
                 ShutdownOperation(self.instance).call(parent_activity=activity,
                 ShutdownOperation(self.instance).call(parent_activity=activity,
-                                                      user=user)
+                                                      user=user, task=task)
             except Instance.WrongStateError:
             except Instance.WrongStateError:
                 pass
                 pass
 
 
@@ -370,23 +373,18 @@ class ShutdownOperation(InstanceOperation):
     id = 'shutdown'
     id = 'shutdown'
     name = _("shutdown")
     name = _("shutdown")
     description = _("Shutdown virtual machine with ACPI signal.")
     description = _("Shutdown virtual machine with ACPI signal.")
+    abortable = True
 
 
     def check_precond(self):
     def check_precond(self):
         super(ShutdownOperation, self).check_precond()
         super(ShutdownOperation, self).check_precond()
         if self.instance.status not in ['RUNNING']:
         if self.instance.status not in ['RUNNING']:
             raise self.instance.WrongStateError(self.instance)
             raise self.instance.WrongStateError(self.instance)
 
 
-    def on_abort(self, activity, error):
-        if isinstance(error, TimeLimitExceeded):
-            activity.resultant_state = None
-        else:
-            activity.resultant_state = 'ERROR'
-
     def on_commit(self, activity):
     def on_commit(self, activity):
         activity.resultant_state = 'STOPPED'
         activity.resultant_state = 'STOPPED'
 
 
-    def _operation(self, activity, user, system, timeout=120):
-        self.instance.shutdown_vm(timeout=timeout)
+    def _operation(self, task=None):
+        self.instance.shutdown_vm(task=task)
         self.instance.yield_node()
         self.instance.yield_node()
         self.instance.yield_vnc_port()
         self.instance.yield_vnc_port()
 
 
@@ -403,7 +401,7 @@ class ShutOffOperation(InstanceOperation):
     def on_commit(self, activity):
     def on_commit(self, activity):
         activity.resultant_state = 'STOPPED'
         activity.resultant_state = 'STOPPED'
 
 
-    def _operation(self, activity, user, system):