Files
awx/awx/main/management/commands/run_fact_cache_receiver.py
2016-11-18 10:23:07 -05:00

103 lines
3.4 KiB
Python

# Copyright (c) 2015 Ansible, Inc.
# All Rights Reserved
# Python
import logging
from datetime import datetime
from kombu import Connection, Exchange, Queue
from kombu.mixins import ConsumerMixin
# Django
from django.core.management.base import NoArgsCommand
from django.conf import settings
from django.utils import timezone
# AWX
from awx.main.models.fact import Fact
from awx.main.models.inventory import Host
logger = logging.getLogger('awx.main.commands.run_fact_cache_receiver')
class FactBrokerWorker(ConsumerMixin):
def __init__(self, connection):
self.connection = connection
self.timestamp = None
def get_consumers(self, Consumer, channel):
return [Consumer(queues=[Queue(settings.FACT_QUEUE,
Exchange(settings.FACT_QUEUE, type='direct'),
routing_key=settings.FACT_QUEUE)],
accept=['json'],
callbacks=[self.process_fact_message])]
def _determine_module(self, facts):
# Symantically determine the module type
if len(facts) == 1:
return facts.iterkeys().next()
return 'ansible'
def _extract_module_facts(self, module, facts):
if module in facts:
f = facts[module]
return f
return facts
def process_facts(self, facts):
module = self._determine_module(facts)
facts = self._extract_module_facts(module, facts)
return (module, facts)
def process_fact_message(self, body, message):
print body
print type(body)
hostname = body['host']
inventory_id = body['inventory_id']
facts_data = body['facts']
date_key = body['date_key']
try:
host_obj = Host.objects.get(name=hostname, inventory__id=inventory_id)
except Fact.DoesNotExist:
logger.warn('Failed to intake fact. Host does not exist <hostname, inventory_id> <%s, %s>' % (hostname, inventory_id))
return
except Fact.MultipleObjectsReturned:
logger.warn('Database inconsistent. Multiple Hosts found for <hostname, inventory_id> <%s, %s>.' % (hostname, inventory_id))
return None
except Exception as e:
logger.error("Exception communicating with Fact Cache Database: %s" % str(e))
return None
(module_name, facts) = self.process_facts(facts_data)
self.timestamp = datetime.fromtimestamp(date_key, timezone.utc)
# Update existing Fact entry
try:
fact_obj = Fact.objects.get(host__id=host_obj.id, module=module_name, timestamp=self.timestamp)
fact_obj.facts = facts
fact_obj.save()
logger.info('Updated existing fact <%s>' % (fact_obj.id))
except Fact.DoesNotExist:
# Create new Fact entry
fact_obj = Fact.add_fact(host_obj.id, module_name, self.timestamp, facts)
logger.info('Created new fact <fact_id, module> <%s, %s>' % (fact_obj.id, module_name))
return fact_obj
class Command(NoArgsCommand):
'''
Save Fact Event packets to the database as emitted from a Tower Scan Job
'''
help = 'Launch the Fact Cache Receiver'
def handle_noargs(self, **options):
with Connection(settings.BROKER_URL) as conn:
try:
worker = FactBrokerWorker(conn)
worker.run()
except KeyboardInterrupt:
pass