Merge branch 'feature-wait-for-agent' into 'master'

Feature Wait For Agent

closes #280

circle/common/models.py

@@ -214,6 +214,14 @@ class ActivityModel(TimeStampedModel):
 
         self.result_data = None if value is None else value.to_dict()
 
+    @classmethod
+    def construct_activity_code(cls, code_suffix, sub_suffix=None):
+        code = join_activity_code(cls.ACTIVITY_CODE_BASE, code_suffix)
+        if sub_suffix:
+            return join_activity_code(code, sub_suffix)
+        else:
+            return code
+
 
 @celery.task()
 def compute_cached(method, instance, memcached_seconds,

circle/dashboard/forms.py

@@ -481,7 +481,7 @@ class TemplateForm(forms.ModelForm):
         else:
             self.allowed_fields = (
                 'name', 'access_method', 'description', 'system', 'tags',
-                'arch', 'lease')
+                'arch', 'lease', 'has_agent')
         if (self.user.has_perm('vm.change_template_resources')
                 or not self.instance.pk):
             self.allowed_fields += tuple(set(self.fields.keys()) -

circle/dashboard/templates/dashboard/template-edit.html

@@ -51,6 +51,7 @@
         {{ form.req_traits|as_crispy_field }}
         {{ form.description|as_crispy_field }}
         {{ form.system|as_crispy_field }}
+        {{ form.has_agent|as_crispy_field }}
         </fieldset>
         <fieldset>
           <legend>{% trans "External resources" %}</legend>

circle/vm/models/activity.py

@@ -24,7 +24,7 @@ from celery.signals import worker_ready
 from celery.contrib.abortable import AbortableAsyncResult
 
 from django.core.urlresolvers import reverse
-from django.db.models import CharField, ForeignKey
+from django.db.models import CharField, ForeignKey, BooleanField
 from django.utils import timezone
 from django.utils.translation import ugettext_lazy as _, ugettext_noop
 
@@ -70,6 +70,8 @@ class InstanceActivity(ActivityModel):
                           help_text=_('Instance this activity works on.'),
                           verbose_name=_('instance'))
     resultant_state = CharField(blank=True, max_length=20, null=True)
+    interruptible = BooleanField(default=False, help_text=_(
+        'Other activities can interrupt this one.'))
 
     class Meta:
         app_label = 'vm'
@@ -91,24 +93,30 @@ class InstanceActivity(ActivityModel):
     @classmethod
     def create(cls, code_suffix, instance, task_uuid=None, user=None,
                concurrency_check=True, readable_name=None,
-               resultant_state=None):
+               resultant_state=None, interruptible=False):
 
         readable_name = _normalize_readable_name(readable_name, code_suffix)
         # Check for concurrent activities
         active_activities = instance.activity_log.filter(finished__isnull=True)
         if concurrency_check and active_activities.exists():
-            raise ActivityInProgressError.create(active_activities[0])
+            for i in active_activities:
+                if i.interruptible:
+                    i.finish(False, result=ugettext_noop(
+                        "Interrupted by other activity."))
+                else:
+                    raise ActivityInProgressError.create(i)
 
-        activity_code = join_activity_code(cls.ACTIVITY_CODE_BASE, code_suffix)
+        activity_code = cls.construct_activity_code(code_suffix)
         act = cls(activity_code=activity_code, instance=instance, parent=None,
                   resultant_state=resultant_state, started=timezone.now(),
                   readable_name_data=readable_name.to_dict(),
-                  task_uuid=task_uuid, user=user)
+                  task_uuid=task_uuid, user=user, interruptible=interruptible)
         act.save()
         return act
 
     def create_sub(self, code_suffix, task_uuid=None, concurrency_check=True,
-                   readable_name=None, resultant_state=None):
+                   readable_name=None, resultant_state=None,
+                   interruptible=False):
 
         readable_name = _normalize_readable_name(readable_name, code_suffix)
         # Check for concurrent activities
@@ -119,7 +127,7 @@ class InstanceActivity(ActivityModel):
         act = InstanceActivity(
             activity_code=join_activity_code(self.activity_code, code_suffix),
             instance=self.instance, parent=self,
-            resultant_state=resultant_state,
+            resultant_state=resultant_state, interruptible=interruptible,
             readable_name_data=readable_name.to_dict(), started=timezone.now(),
             task_uuid=task_uuid, user=self.user)
         act.save()
@@ -183,13 +191,14 @@ class InstanceActivity(ActivityModel):
     @contextmanager
     def sub_activity(self, code_suffix, on_abort=None, on_commit=None,
                      readable_name=None, task_uuid=None,
-                     concurrency_check=True):
+                     concurrency_check=True, interruptible=False):
         """Create a transactional context for a nested instance activity.
         """
         if not readable_name:
             warn("Set readable_name", stacklevel=3)
         act = self.create_sub(code_suffix, task_uuid, concurrency_check,
-                              readable_name=readable_name)
+                              readable_name=readable_name,
+                              interruptible=interruptible)
         return activitycontextimpl(act, on_abort=on_abort, on_commit=on_commit)
 
     def get_operation(self):

circle/vm/models/instance.py

@@ -123,6 +123,10 @@ class VirtualMachineDescModel(BaseResourceConfigModel):
                                     'format like "%s".') %
                                   'Ubuntu 12.04 LTS Desktop amd64'))
     tags = TaggableManager(blank=True, verbose_name=_("tags"))
+    has_agent = BooleanField(verbose_name=_('has agent'), default=True,
+                             help_text=_(
+                                 'If the machine has agent installed, and '
+                                 'the manager should wait for its start.'))
 
     class Meta:
         abstract = True
@@ -424,7 +428,8 @@ class Instance(AclBase, VirtualMachineDescModel, StatusModel, OperatedMixin,
         # prepare parameters
         common_fields = ['name', 'description', 'num_cores', 'ram_size',
                          'max_ram_size', 'arch', 'priority', 'boot_menu',
-                         'raw_data', 'lease', 'access_method', 'system']
+                         'raw_data', 'lease', 'access_method', 'system',
+                         'has_agent']
         params = dict(template=template, owner=owner, pw=pwgen())
         params.update([(f, getattr(template, f)) for f in common_fields])
         params.update(kwargs)  # override defaults w/ user supplied values

circle/vm/operations.py

@@ -299,16 +299,20 @@ class DeployOperation(InstanceOperation):
                 "deploy network")):
             self.instance.deploy_net()
 
+        try:
+            self.instance.renew(parent_activity=activity)
+        except:
+            pass
+
         # Resume vm
         with activity.sub_activity(
             'booting', readable_name=ugettext_noop(
                 "boot virtual machine")):
             self.instance.resume_vm(timeout=timeout)
 
-        try:
-            self.instance.renew(parent_activity=activity)
-        except:
-            pass
+        if self.instance.has_agent:
+            activity.sub_activity('os_boot', readable_name=ugettext_noop(
+                "wait operating system loading"), interruptible=True)
 
 
 register_operation(DeployOperation)
@@ -425,8 +429,11 @@ class RebootOperation(InstanceOperation):
     required_perms = ()
     accept_states = ('RUNNING', )
 
-    def _operation(self, timeout=5):
+    def _operation(self, activity, timeout=5):
         self.instance.reboot_vm(timeout=timeout)
+        if self.instance.has_agent:
+            activity.sub_activity('os_boot', readable_name=ugettext_noop(
+                "wait operating system loading"), interruptible=True)
 
 
 register_operation(RebootOperation)
@@ -499,8 +506,11 @@ class ResetOperation(InstanceOperation):
     required_perms = ()
     accept_states = ('RUNNING', )
 
-    def _operation(self, timeout=5):
+    def _operation(self, activity, timeout=5):
         self.instance.reset_vm(timeout=timeout)
+        if self.instance.has_agent:
+            activity.sub_activity('os_boot', readable_name=ugettext_noop(
+                "wait operating system loading"), interruptible=True)
 
 register_operation(ResetOperation)
 

circle/vm/tasks/local_agent_tasks.py

@@ -85,16 +85,22 @@ def agent_started(vm, version=None):
     from vm.models import Instance, instance_activity, InstanceActivity
     instance = Instance.objects.get(id=int(vm.split('-')[-1]))
     queue = instance.get_remote_queue_name("agent")
-    initialized = InstanceActivity.objects.filter(
-        instance=instance, activity_code='vm.Instance.agent.cleanup').exists()
+    initialized = instance.activity_log.filter(
+        activity_code='vm.Instance.agent.cleanup').exists()
 
     with instance_activity(code_suffix='agent',
                            readable_name=ugettext_noop('agent'),
+                           concurrency_check=False,
                            instance=instance) as act:
         with act.sub_activity('starting',
                               readable_name=ugettext_noop('starting')):
             pass
 
+        for i in InstanceActivity.objects.filter(
+                instance=instance, activity_code__endswith='.os_boot',
+                finished__isnull=True):
+            i.finish(True)
+
         if version and version != settings.AGENT_VERSION:
             try:
                 update_agent(instance, act)
@@ -108,10 +114,9 @@ def agent_started(vm, version=None):
             send_init_commands(instance, act)
 
         send_networking_commands(instance, act)
-        with act.sub_activity(
-            'start_access_server',
-            readable_name=ugettext_noop('start access server')
-        ):
+        with act.sub_activity('start_access_server',
+                              readable_name=ugettext_noop(
+                                  'start access server')):
             start_access_server.apply_async(queue=queue, args=(vm, ))
 
 

circle/vm/tests/test_models.py

@@ -217,6 +217,8 @@ class InstanceActivityTestCase(TestCase):
 
     def test_create_concurrency_check(self):
         instance = MagicMock(spec=Instance)
+        instance.activity_log.filter.return_value.__iter__.return_value = iter(
+            [MagicMock(spec=InstanceActivity, interruptible=False)])
         instance.activity_log.filter.return_value.exists.return_value = True
 
         with self.assertRaises(ActivityInProgressError):