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notifications-api/app/serialised_models.py
Chris Hill-Scott 9189a5520d WIP
2021-01-08 14:38:38 +00:00

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from collections import defaultdict
from functools import partial
from threading import RLock
import cachetools
from notifications_utils.clients.redis import RequestCache
from notifications_utils.serialised_model import (
SerialisedModel,
SerialisedModelCollection,
)
from werkzeug.utils import cached_property
from app import db, redis_store
from app.dao.api_key_dao import get_model_api_keys
from app.dao.services_dao import dao_fetch_service_by_id
caches = defaultdict(partial(cachetools.TTLCache, maxsize=1024, ttl=2))
locks = defaultdict(RLock)
redis_cache = RequestCache(redis_store)
def memory_cache(func):
@cachetools.cached(
cache=caches[func.__qualname__],
lock=locks[func.__qualname__],
key=ignore_first_argument_cache_key,
)
def wrapper(*args, **kwargs):
return func(*args, **kwargs)
return wrapper
def ignore_first_argument_cache_key(cls, *args, **kwargs):
return cachetools.keys.hashkey(*args, **kwargs)
class SerialisedTemplate(SerialisedModel):
ALLOWED_PROPERTIES = {
'archived',
'content',
'id',
'postage',
'process_type',
'reply_to_text',
'subject',
'template_type',
'version',
}
@classmethod
@memory_cache
def from_id_and_service_id(cls, template_id, service_id):
return cls(cls.get_dict(template_id, service_id)['data'])
@staticmethod
@redis_cache.set('service-{service_id}-template-{template_id}-version-None')
def get_dict(template_id, service_id):
from app.dao import templates_dao
from app.schemas import template_schema
fetched_template = templates_dao.dao_get_template_by_id_and_service_id(
template_id=template_id,
service_id=service_id
)
template_dict = template_schema.dump(fetched_template).data
db.session.commit()
return {'data': template_dict}
class SerialisedService(SerialisedModel):
ALLOWED_PROPERTIES = {
'id',
'active',
'contact_link',
'email_from',
'message_limit',
'permissions',
'rate_limit',
'research_mode',
'restricted',
}
@classmethod
@memory_cache
def from_id(cls, service_id):
return cls(cls.get_dict(service_id)['data'])
@staticmethod
@redis_cache.set('service-{service_id}')
def get_dict(service_id):
from app.schemas import service_schema
service_dict = service_schema.dump(dao_fetch_service_by_id(service_id)).data
db.session.commit()
return {'data': service_dict}
@cached_property
def api_keys(self):
return SerialisedAPIKeyCollection.from_service_id(self.id)
class SerialisedAPIKey(SerialisedModel):
ALLOWED_PROPERTIES = {
'id',
'secret',
'expiry_date',
'key_type',
}
class SerialisedAPIKeyCollection(SerialisedModelCollection):
model = SerialisedAPIKey
@classmethod
@memory_cache
def from_service_id(cls, service_id):
keys = [
{k: getattr(key, k) for k in SerialisedAPIKey.ALLOWED_PROPERTIES}
for key in get_model_api_keys(service_id)
]
db.session.commit()
return cls(keys)
class SerialisedServiceCallbackApi(SerialisedModel):
@classmethod
@memory_cache
def from_service_id(cls, service_id):
service_callback_api_dict = cls.get_dict(service_id)
if service_callback_api_dict:
return cls(cls.get_dict(service_id))
return None
@staticmethod
# Dont cache this because we probably dont wanna put peoples
# bearer tokens in Redis
def get_dict(service_id):
service_callback_api = get_service_delivery_status_callback_api_for_service(
service_id
)
if service_callback_api:
return service_callback_api.serialize()
return None