<s> from itertools import chain <EOL> from django . conf import settings <EOL> from django . contrib . auth import get_user_model <EOL> from django . contrib . contenttypes . models import ContentType <EOL> from django . template import TemplateDoesNotExist <EOL> from guardian . shortcuts import get_users_with_perms <EOL> from core . models import Department , Application <EOL> from event . models import EventLog <EOL> from django . template . loader import render_to_string <EOL> class Event ( object ) : <EOL> """<STR_LIT>""" <EOL> context = { } <EOL> def __init__ ( self , department_id , ** kwargs ) : <EOL> self . department_id = department_id <EOL> for key , value in kwargs . items ( ) : <EOL> self . __setattr__ ( key , value ) <EOL> def __setattr__ ( self , key , value ) : <EOL> self . context [ key ] = value <EOL> def __getattr__ ( self , item ) : <EOL> return self . context [ item ] if item in self . context else None <EOL> @ property <EOL> def type ( self ) : <EOL> return self . __class__ . __name__ <EOL> class EventDispatcher ( object ) : <EOL> handlers = [ ] <EOL> @ classmethod <EOL> def add_handler ( cls , handler ) : <EOL> """<STR_LIT>""" <EOL> cls . handlers . append ( handler ) <EOL> @ classmethod <EOL> def trigger ( cls , event ) : <EOL> """<STR_LIT>""" <EOL> for handler in cls . handlers : <EOL> handler . process ( event ) <EOL> class EventHandler ( object ) : <EOL> """<STR_LIT>""" <EOL> subscribe_to = list ( ) <EOL> def __init__ ( self ) : <EOL> self . event = None <EOL> def process ( self , event ) : <EOL> self . event = event <EOL> print len ( self . subscribe_to ) == <NUM_LIT:0> or self . event . type in self . subscribe_to <EOL> if len ( self . subscribe_to ) == <NUM_LIT:0> or self . event . type in self . subscribe_to : <EOL> self . _process ( event ) <EOL> def _process ( self , event ) : <EOL> pass <EOL> def _render ( self , filename ) : <EOL> try : <EOL> return render_to_string ( '<STR_LIT>' % ( self . event . type , filename ) , self . event . context ) <EOL> except TemplateDoesNotExist : <EOL> raise Exception ( '<STR_LIT>' % ( filename , self . event . type ) ) <EOL> def get_subject ( self ) : <EOL> """<STR_LIT>""" <EOL> return self . _render ( '<STR_LIT>' ) <EOL> def get_full ( self ) : <EOL> """<STR_LIT>""" <EOL> return self . _render ( '<STR_LIT>' ) <EOL> def get_full_plain ( self ) : <EOL> """<STR_LIT>""" <EOL> return self . _render ( '<STR_LIT>' ) <EOL> class LogHandler ( EventHandler ) : <EOL> """<STR_LIT>""" <EOL> def _process ( self , event ) : <EOL> EventLog ( department_id = event . department_id , type = event . type , message = self . get_subject ( ) ) . save ( ) <EOL> EventDispatcher . add_handler ( LogHandler ( ) ) <EOL> class UserNotificationHandler ( EventHandler ) : <EOL> """<STR_LIT>""" <EOL> subscribe_to = ( '<STR_LIT>' , ) <EOL> def _process ( self , event ) : <EOL> users = get_users_with_perms ( Department ( id = event . department_id ) ) . prefetch_related ( '<STR_LIT>' ) <EOL> admins = get_user_model ( ) . objects . filter ( is_superuser = True ) <EOL> users = set ( chain ( users , admins ) ) <EOL> application_content_type = ContentType . objects . get_for_model ( Application ) <EOL> from backend . tasks import SendEmailTask <EOL> for user in users : <EOL> if not user . has_perm ( '<STR_LIT>' , event . execution . environment ) : <EOL> continue <EOL> if not user . has_perm ( '<STR_LIT>' , event . execution . task ) : <EOL> continue <EOL> notification_preference = user . notifications . filter ( content_type = application_content_type . id , <EOL> object_id = event . execution . environment . application_id , <EOL> event_type = event . type ) . first ( ) <EOL> if notification_preference and notification_preference . is_active : <EOL> SendEmailTask ( ) . delay ( subject = self . get_subject ( ) , <EOL> message = self . get_full_plain ( ) , <EOL> message_html = self . get_full ( ) , <EOL> recipient = user . email ) <EOL> EventDispatcher . add_handler ( UserNotificationHandler ( ) ) </s>
