chapeau/django_kepi/models.py

143 wiersze
3.6 KiB
Python

from django.db import models
from django_kepi import object_type_registry, find, register_type, logger
from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
from django.conf import settings
import django_kepi.tasks
import logging
import random
import json
import datetime
import warnings
import uuid
from django_kepi.activity_model import *
from django_kepi.cache_model import *
from django_kepi.something_model import *
#######################
class CachedText(models.Model):
key = models.UUIDField(
primary_key = True,
default = uuid.uuid4,
)
source = models.URLField(
)
contents = models.TextField(
default = None,
null = True,
)
# FIXME expiry datetime
#######################
class QuarantinedMessage(models.Model):
username = models.CharField(
max_length=255,
blank=True,
null=True,
default=None)
headers = models.TextField()
body = models.TextField()
signature_verified = models.BooleanField(
default=False,
)
def deploy(self,
retrying=False):
if retrying:
logger.debug('%s: re-attempting to deploy', self)
remaining_qmns = QuarantinedMessageNeeds.objects.filter(
message=self.pk,
)
if remaining_qmns.exists():
logger.debug('%s: -- but there are dependencies remaining: %s',
self, remaining_qmns)
return None
else:
logger.debug('%s: attempting to deploy', self)
try:
value = json.loads(self.body)
except json.decoder.JSONDecodeError:
logger.info('%s: JSON was invalid; deleting', self)
self.delete()
return None
activity = Activity.create(
value = value,
from_message = self,
)
if activity is None:
logger.debug('%s: deployment failed because dependencies remain',
self)
if retrying:
logger.error("%s: dependencies remaining when all dependency records were gone; this should never happen")
raise RuntimeError("dependencies remaining on retry")
return None
else:
logger.info('%s: deployment was successful', self)
self.delete()
return activity
def __str__(self):
return 'QM{}'.format(self.pk)
class QuarantinedMessageNeeds(models.Model):
class Meta:
index_together = ["message", "needs_to_fetch"]
id = models.UUIDField(
primary_key=True,
default=uuid.uuid4,
editable=False,
)
message = models.ForeignKey(QuarantinedMessage,
on_delete=models.CASCADE)
# TODO: add indexing when we have tests working
needs_to_fetch = models.URLField()
def start_looking(self):
django_kepi.tasks.fetch.delay(
fetch_url = self.needs_to_fetch,
post_data = None,
result_url = 'https://localhost/async_result', # XXX
result_id = self.id,
)
def __str__(self):
return 'QM{} needs {}'.format(
self.message.pk,
self.needs_to_fetch,
)
#######################
__all__ = [
'Activity',
'Cache',
'Person',
'QuarantinedMessage',
'QuarantinedMessageNeeds',
'new_activity_identifier',
]