Stash post-validated fields of the task in the TaskResult

This allows us to have a snapshot of the fields, which we can restore
on the pre-fork side so as to avoid having to re-template fields.

lib/ansible/executor/process/worker.py

@@ -115,7 +115,12 @@ class WorkerProcess(multiprocessing.Process):
             display.debug("done running TaskExecutor() for %s/%s" % (self._host, self._task))
             self._host.vars = dict()
             self._host.groups = []
-            task_result = TaskResult(self._host.name, self._task._uuid, executor_result)
+            task_result = TaskResult(
+                self._host.name,
+                self._task._uuid,
+                executor_result,
+                task_fields=self._task.dump_attrs(),
+            )
 
             # put the result on the result queue
             display.debug("sending task result")
@@ -125,7 +130,12 @@ class WorkerProcess(multiprocessing.Process):
         except AnsibleConnectionFailure:
             self._host.vars = dict()
             self._host.groups = []
-            task_result = TaskResult(self._host.name, self._task._uuid, dict(unreachable=True))
+            task_result = TaskResult(
+                self._host.name,
+                self._task._uuid,
+                dict(unreachable=True),
+                task_fields=self._task.dump_attrs(),
+            )
             self._rslt_q.put(task_result, block=False)
 
         except Exception as e:
@@ -133,7 +143,12 @@ class WorkerProcess(multiprocessing.Process):
                 try:
                     self._host.vars = dict()
                     self._host.groups = []
-                    task_result = TaskResult(self._host.name, self._task._uuid, dict(failed=True, exception=to_text(traceback.format_exc()), stdout=''))
+                    task_result = TaskResult(
+                        self._host.name,
+                        self._task._uuid,
+                        dict(failed=True, exception=to_text(traceback.format_exc()), stdout=''),
+                        task_fields=self._task.dump_attrs(),
+                    )
                     self._rslt_q.put(task_result, block=False)
                 except:
                     display.debug(u"WORKER EXCEPTION: %s" % to_text(e))

lib/ansible/executor/task_executor.py

@@ -291,7 +291,15 @@ class TaskExecutor:
                 templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=self._job_vars)
                 res['_ansible_item_label'] = templar.template(label)
 
-            self._rslt_q.put(TaskResult(self._host.name, self._task._uuid, res), block=False)
+            self._rslt_q.put(
+                TaskResult(
+                    self._host.name,
+                    self._task._uuid,
+                    res,
+                    task_fields=self._task.dump_attrs(),
+                ),
+                block=False,
+            )
             results.append(res)
             del task_vars[loop_var]
 
@@ -565,7 +573,7 @@ class TaskExecutor:
                         result['_ansible_retry'] = True
                         result['retries'] = retries
                         display.debug('Retrying task, attempt %d of %d' % (attempt, retries))
-                        self._rslt_q.put(TaskResult(self._host.name, self._task._uuid, result), block=False)
+                        self._rslt_q.put(TaskResult(self._host.name, self._task._uuid, result, task_fields=self._task.dump_attrs()), block=False)
                         time.sleep(delay)
         else:
             if retries > 1:

lib/ansible/executor/task_result.py

@@ -28,14 +28,20 @@ class TaskResult:
     the result of a given task.
     '''
 
-    def __init__(self, host, task, return_data):
+    def __init__(self, host, task, return_data, task_fields=None):
         self._host = host
         self._task = task
+
         if isinstance(return_data, dict):
             self._result = return_data.copy()
         else:
             self._result = DataLoader().load(return_data)
 
+        if task_fields is None:
+            self._task_fields = dict()
+        else:
+            self._task_fields = task_fields
+
     def is_changed(self):
         return self._check_key('changed')
 

lib/ansible/playbook/base.py

@@ -500,6 +500,15 @@ class Base(with_metaclass(BaseMeta, object)):
 
         return [i for i,_ in itertools.groupby(combined) if i is not None]
 
+    def dump_attrs(self):
+        '''
+        Dumps all attributes to a dictionary
+        '''
+        attrs = dict()
+        for name in self._valid_attrs.keys():
+            attrs[name] = getattr(self, name)
+        return attrs
+
     def serialize(self):
         '''
         Serializes the object derived from the base object into
@@ -509,10 +518,7 @@ class Base(with_metaclass(BaseMeta, object)):
         as field attributes.
         '''
 
-        repr = dict()
+        repr = self.dump_attrs()
-
-        for name in self._valid_attrs.keys():
-            repr[name] = getattr(self, name)
 
         # serialize the uuid field
         repr['uuid'] = self._uuid

lib/ansible/plugins/strategy/__init__.py

@@ -304,11 +304,6 @@ class StrategyBase:
             else:
                 return False
 
-        # a Templar class to use for templating things later, as we're using
-        # original/non-validated objects here on the manager side. We set the
-        # variables in use later inside the loop below
-        templar = Templar(loader=self._loader)
-
         cur_pass = 0
         while True:
             try:
@@ -321,7 +316,11 @@ class StrategyBase:
 
             # get the original host and task. We then assign them to the TaskResult for use in callbacks/etc.
             original_host = get_original_host(task_result._host)
-            original_task = iterator.get_original_task(original_host, task_result._task)
+            found_task = iterator.get_original_task(original_host, task_result._task)
+            original_task = found_task.copy(exclude_parent=True, exclude_tasks=True)
+            original_task._parent = found_task._parent
+            for (attr, val) in iteritems(task_result._task_fields):
+                setattr(original_task, attr, val)
 
             task_result._host = original_host
             task_result._task = original_task
@@ -348,12 +347,6 @@ class StrategyBase:
                     self._tqm.send_callback('v2_runner_item_on_ok', task_result)
                 continue
 
-            # get the vars for this task/host pair, make them the active set of vars for our templar above
-            task_vars = self._variable_manager.get_vars(loader=self._loader, play=iterator._play, host=original_host, task=original_task)
-            self.add_tqm_variables(task_vars, play=iterator._play)
-            templar.set_available_variables(task_vars)
-
-            run_once = templar.template(original_task.run_once)
             if original_task.register:
                 host_list = self.get_task_hosts(iterator, original_host, original_task)
 
@@ -368,10 +361,10 @@ class StrategyBase:
             role_ran = False
             if task_result.is_failed():
                 role_ran = True
-                ignore_errors = templar.template(original_task.ignore_errors)
+                ignore_errors = original_task.ignore_errors
                 if not ignore_errors:
                     display.debug("marking %s as failed" % original_host.name)
-                    if run_once:
+                    if original_task.run_once:
                         # if we're using run_once, we have to fail every host here
                         for h in self._inventory.get_hosts(iterator._play.hosts):
                             if h.name not in self._tqm._unreachable_hosts:
@@ -488,7 +481,7 @@ class StrategyBase:
                             item = result_item.get(loop_var, None)
                             if item is not None:
                                 task_vars[loop_var] = item
-                            host_name = templar.template(original_task.delegate_to)
+                            host_name = original_task.delegate_to
                             actual_host = self._inventory.get_host(host_name)
                             if actual_host is None:
                                 actual_host = Host(name=host_name)