per-jt most recent fact scan gathering

* Remove system tracking piggybacked most-recent-fact-gathering
* Add explicit per-jobtemplate configurable fact gathering
* Continue to support system tracking
* Fixed a bug where we weren't ack()ing system tracking rabbit msgs

awx/api/serializers.py

@@ -2088,7 +2088,7 @@ class JobOptionsSerializer(LabelsListMixin, BaseSerializer):
         fields = ('*', 'job_type', 'inventory', 'project', 'playbook',
                   'credential', 'cloud_credential', 'network_credential', 'forks', 'limit',
                   'verbosity', 'extra_vars', 'job_tags',  'force_handlers',
-                  'skip_tags', 'start_at_task', 'timeout')
+                  'skip_tags', 'start_at_task', 'timeout', 'gather_facts',)
 
     def get_related(self, obj):
         res = super(JobOptionsSerializer, self).get_related(obj)

awx/main/management/commands/run_fact_cache_receiver.py

@@ -111,7 +111,7 @@ class FactBrokerWorker(ConsumerMixin):
                 analytics_logger.info('Received message with fact data', extra=dict(
                     module_name=module_name, facts_data=facts))
             ret = fact_obj
-        else:
+        if job.gather_facts is True:
             host_obj.update_ansible_facts(module=module_name, facts=facts, timestamp=self.timestamp)
 
         message.ack()

awx/main/migrations/0038_v320_release.py

@@ -48,10 +48,21 @@ class Migration(migrations.Migration):
             name='ansible_facts',
             field=awx.main.fields.JSONBField(default={}, help_text='Arbitrary JSON structure of most recent ansible_facts, per-host.', blank=True),
         ),
+        migrations.AddField(
+            model_name='job',
+            name='gather_facts',
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AddField(
+            model_name='jobtemplate',
+            name='gather_facts',
+            field=models.BooleanField(default=False),
+        ),
         migrations.RunSQL([("CREATE INDEX host_ansible_facts_default_gin ON %s USING gin"
                             "(ansible_facts jsonb_path_ops);", [AsIs(Host._meta.db_table)])],
                           [('DROP INDEX host_ansible_facts_default_gin;', None)]),
 
+
         # SCM file-based inventories
         migrations.AddField(
             model_name='inventorysource',

awx/main/models/fact.py

@@ -7,7 +7,6 @@ from django.db import models
 from django.utils.translation import ugettext_lazy as _
 
 from awx.main.fields import JSONBField
-from awx.main.models import Host
 
 __all__ = ('Fact',)
 
@@ -65,14 +64,6 @@ class Fact(models.Model):
 
     @staticmethod
     def add_fact(host_id, module, timestamp, facts):
-        try:
-            host = Host.objects.get(id=host_id)
-        except Host.DoesNotExist as e:
-            logger.warn("Host with id %s not found while trying to update latest fact set." % host_id)
-            raise e
-
-        host.update_ansible_facts(module=module, facts=facts, timestamp=timestamp)
-
         fact_obj = Fact.objects.create(host_id=host_id, module=module, timestamp=timestamp, facts=facts)
         fact_obj.save()
         return fact_obj

awx/main/models/jobs.py

@@ -159,6 +159,9 @@ class JobOptions(BaseModel):
         blank=True,
         default=0,
     )
+    gather_facts = models.BooleanField(
+        default=False,
+    )
 
     extra_vars_dict = VarsDictProperty('extra_vars', True)
 
@@ -261,7 +264,8 @@ class JobTemplate(UnifiedJobTemplate, JobOptions, SurveyJobTemplateMixin, Resour
                 'playbook', 'credential', 'cloud_credential', 'network_credential', 'forks', 'schedule',
                 'limit', 'verbosity', 'job_tags', 'extra_vars', 'launch_type',
                 'force_handlers', 'skip_tags', 'start_at_task', 'become_enabled',
-                'labels', 'survey_passwords', 'allow_simultaneous', 'timeout']
+                'labels', 'survey_passwords', 'allow_simultaneous', 'timeout',
+                'gather_facts',]
 
     def resource_validation_data(self):
         '''

awx/main/tasks.py

@@ -944,11 +944,12 @@ class RunJob(BaseTask):
                 env['ANSIBLE_NET_AUTH_PASS'] = decrypt_field(network_cred, 'authorize_password')
 
         # Set environment variables related to gathering facts from the cache
-        env['FACT_QUEUE'] = settings.FACT_QUEUE
+        if job.job_type == PERM_INVENTORY_SCAN or job.gather_facts is True:
-        env['ANSIBLE_LIBRARY'] = self.get_path_to('..', 'plugins', 'library')
+            env['FACT_QUEUE'] = settings.FACT_QUEUE
-        env['ANSIBLE_CACHE_PLUGINS'] = self.get_path_to('..', 'plugins', 'fact_caching')
+            env['ANSIBLE_LIBRARY'] = self.get_path_to('..', 'plugins', 'library')
-        env['ANSIBLE_CACHE_PLUGIN'] = "tower"
+            env['ANSIBLE_CACHE_PLUGINS'] = self.get_path_to('..', 'plugins', 'fact_caching')
-        env['ANSIBLE_CACHE_PLUGIN_CONNECTION'] = "tcp://127.0.0.1:%s" % str(settings.FACT_CACHE_PORT)
+            env['ANSIBLE_CACHE_PLUGIN'] = "tower"
+            env['ANSIBLE_CACHE_PLUGIN_CONNECTION'] = "tcp://127.0.0.1:%s" % str(settings.FACT_CACHE_PORT)
         return env
 
     def build_args(self, job, **kwargs):