'''Manage notifications and subscriptions
When an artifact is modified:
- Notification generated by tool app
- Search is made for subscriptions matching the notification
- Notification is added to each matching subscriptions' queue
Periodically:
- For each subscriptions with notifications and direct delivery:
- For each notification, enqueue as a separate email message
- Clear subscription's notification list
- For each subscription with notifications and delivery due:
- Enqueue one email message with all notifications
- Clear subscription's notification list
Notifications are also available for use in feeds
'''
import logging
from datetime import datetime, timedelta
from collections import defaultdict
from pylons import c, g
from tg import config
import pymongo
from ming import schema as S
from ming.orm import MappedClass, FieldProperty, ForeignIdProperty, RelationProperty, session
from allura.lib import helpers as h
from .session import main_orm_session, project_orm_session
from .types import ArtifactReferenceType
log = logging.getLogger(__name__)
MAILBOX_QUIESCENT=timedelta(minutes=10)
class Notification(MappedClass):
class __mongometa__:
session = main_orm_session
name = 'notification'
_id = FieldProperty(str, if_missing=h.gen_message_id)
# Classify notifications
project_id = ForeignIdProperty('Project', if_missing=lambda:c.project._id)
app_config_id = ForeignIdProperty('AppConfig', if_missing=lambda:c.app.config._id)
artifact_reference = FieldProperty(ArtifactReferenceType)
topic = FieldProperty(str)
# Notification Content
in_reply_to=FieldProperty(str)
from_address=FieldProperty(str)
reply_to_address=FieldProperty(str)
subject=FieldProperty(str)
text=FieldProperty(str)
link=FieldProperty(str)
author_id=ForeignIdProperty('User')
feed_meta=FieldProperty(dict(
link=str,
created=S.DateTime(if_missing=datetime.utcnow),
unique_id=S.String(if_missing=lambda:h.nonce(40)),
author_name=S.String(if_missing=lambda:c.user.display_name),
author_link=S.String(if_missing=lambda:c.user.url())))
@classmethod
def post(cls, artifact, topic, **kw):
'''Create a notification and send the notify message'''
n = cls._make_notification(artifact, topic, **kw)
idx = artifact.index()
g.publish('react', 'forgemail.notify', dict(
notification_id=n._id,
artifact_index_id=idx['id'],
topic=topic))
return n
@classmethod
def post_user(cls, user, artifact, topic, **kw):
'''Create a notification and deliver directly to a user's flash
mailbox'''
try:
mbox = Mailbox(user_id=user._id, is_flash=True,
project_id=None,
app_config_id=None)
session(mbox).flush(mbox)
except pymongo.errors.DuplicateKeyError:
session(mbox).expunge(mbox)
mbox = Mailbox.query.get(user_id=user._id, is_flash=True)
n = cls._make_notification(artifact, topic, **kw)
mbox.queue.append(n._id)
return n
@classmethod
def _make_notification(cls, artifact, topic, **kwargs):
idx = artifact.index()
subject_prefix = '[%s:%s] ' % (
c.project.shortname, c.app.config.options.mount_point)
if topic == 'message':
post = kwargs.pop('post')
subject = post.subject or ''
if post.parent_id and not subject.lower().startswith('re:'):
subject = 'Re: ' + subject
author = post.author()
d = dict(
_id=post._id,
from_address='"%s" <%s>' % (
author.display_name, author.preferences.email_address),
reply_to_address='"%s" <%s>' % (
subject_prefix, getattr(artifact, 'email_address', 'noreply@in.sf.net')),
subject=subject_prefix + subject,
text=post.text,
in_reply_to=post.parent_id)
else:
subject = kwargs.pop('subject', '%s modified by %s' % (
idx['title_s'], c.user.display_name))
d = dict(
from_address='%s <%s>' % (
idx['title_s'], artifact.email_address),
reply_to_address='"%s" <%s>' % (
idx['title_s'], artifact.email_address),
subject=subject_prefix + subject,
text=kwargs.pop('text', subject))
if not d.get('text'):
d['text'] = ''
n = cls(artifact_reference=artifact.dump_ref(),
topic=topic,
link=kwargs.pop('link', artifact.url()),
**d)
return n
def footer(self):
prefix = config.get('forgemail.url', 'https://sourceforge.net')
return '''
---
Sent from sourceforge.net because you indicated interest in <%s%s>
To unsubscribe from further messages, please visit <%s/auth/prefs/>
''' % (prefix, self.link, prefix)
def send_direct(self, user_id):
g.publish('audit', 'forgemail.send_email', {
'destinations':[str(user_id)],
'from':self.from_address,
'reply_to':self.reply_to_address,
'subject':self.subject,
'message_id':self._id,
'in_reply_to':self.in_reply_to,
'text':(self.text or '') + self.footer()},
serializer='pickle')
@classmethod
def send_digest(self, user_id, from_address, subject, notifications,
reply_to_address=None):
if not notifications: return
if reply_to_address is None:
reply_to_address = from_address
text = [ 'Digest of %s' % subject ]
for n in notifications:
text.append('From: %s' % n.from_address)
text.append('Subject: %s' % (n.subject or '(no subject)'))
text.append('Message-ID: %s' % n._id)
text.append('')
text.append(n.text or '-no text-')
text.append(n.footer())
text = '\n'.join(text)
g.publish('audit', 'forgemail.send_email', {
'destinations':[str(user_id)],
'from':from_address,
'reply_to':from_address,
'subject':subject,
'message_id':h.gen_message_id(),
'text':text},
serializer='pickle')
@classmethod
def send_summary(self, user_id, from_address, subject, notifications):
if not notifications: return
text = [ 'Digest of %s' % subject ]
for n in notifications:
text.append('From: %s' % n.from_address)
text.append('Subject: %s' % (n.subject or '(no subject)'))
text.append('Message-ID: %s' % n._id)
text.append('')
text.append(h.text.truncate(n.text or '-no text-', 128))
text.append(n.footer())
text = '\n'.join(text)
g.publish('audit', 'forgemail.send_email', {
'destinations':[str(user_id)],
'from':from_address,
'reply_to':from_address,
'subject':subject,
'message_id':h.gen_message_id(),
'text':text},
serializer='pickle')
class Mailbox(MappedClass):
class __mongometa__:
session = main_orm_session
name = 'mailbox'
unique_indexes = [
('user_id', 'project_id', 'app_config_id',
'artifact_index_id', 'topic', 'is_flash'),
]
_id = FieldProperty(S.ObjectId)
user_id = ForeignIdProperty('User', if_missing=lambda:c.user._id)
project_id = ForeignIdProperty('Project', if_missing=lambda:c.project._id)
app_config_id = ForeignIdProperty('AppConfig', if_missing=lambda:c.app.config._id)
# Subscription filters
artifact_title = FieldProperty(str)
artifact_url = FieldProperty(str)
artifact_index_id = FieldProperty(str)
topic = FieldProperty(str)
# Subscription type
is_flash = FieldProperty(bool, if_missing=False)
type = FieldProperty(S.OneOf, 'direct', 'digest', 'summary', 'flash')
frequency = FieldProperty(dict(
n=int,unit=S.OneOf('day', 'week', 'month')))
next_scheduled = FieldProperty(datetime, if_missing=datetime.utcnow)
# Actual notification IDs
last_modified = FieldProperty(datetime, if_missing=datetime(2000,1,1))
queue = FieldProperty([str])
project = RelationProperty('Project')
app_config = RelationProperty('AppConfig')
@classmethod
def subscribe(
cls,
user_id=None, project_id=None, app_config_id=None,
artifact=None, topic=None,
type='direct', n=1, unit='day'):
if user_id is None: user_id = c.user._id
if project_id is None: project_id = c.project._id
if app_config_id is None: app_config_id = c.app.config._id
if artifact is None:
artifact_title = 'All artifacts'
artifact_url = None
artifact_index_id = None
else:
i = artifact.index()
artifact_title = i['title_s']
artifact_url = artifact.url()
artifact_index_id = i['id']
if cls.query.get(
user_id=user_id, project_id=project_id, app_config_id=app_config_id,
artifact_index_id=None):
# don't subscribe to individual artifacts when already
# subscribed to tool
log.warning('Tried to subscribe to artifact %s, while there is a tool subscription', artifact_url)
return
d = dict(user_id=user_id, project_id=project_id, app_config_id=app_config_id,
artifact_index_id=artifact_index_id, topic=topic)
sess = session(cls)
try:
mbox = cls(
type=type, frequency=dict(n=n, unit=unit),
artifact_title=artifact_title,
artifact_url=artifact_url,
**d)
sess.flush(mbox)
except pymongo.errors.DuplicateKeyError:
sess.expunge(mbox)
mbox = cls.query.get(**d)
mbox.artifact_title = artifact_title
mbox.artifact_url = artifact_url
mbox.type = type
mbox.frequency.n = n
mbox.frequency.unit = unit
sess.flush(mbox)
if not artifact_index_id:
# Unsubscribe from individual artifacts when subscribing to the tool
for other_mbox in cls.query.find(dict(
user_id=user_id, project_id=project_id, app_config_id=app_config_id)):
if other_mbox is not mbox:
other_mbox.delete()
@classmethod
def unsubscribe(
cls,
user_id=None, project_id=None, app_config_id=None,
artifact_index_id=None, topic=None):
if user_id is None: user_id = c.user._id
if project_id is None: project_id = c.project._id
if app_config_id is None: app_config_id = c.app.config._id
cls.query.remove(dict(
user_id=user_id,
project_id=project_id,
app_config_id=app_config_id,
artifact_index_id=artifact_index_id,
topic=topic))
@classmethod
def subscribed(
cls, user_id=None, project_id=None, app_config_id=None,
artifact=None, topic=None):
if user_id is None: user_id = c.user._id
if project_id is None: project_id = c.project._id
if app_config_id is None: app_config_id = c.app.config._id
if artifact is None:
artifact_index_id = None
else:
i = artifact.index()
artifact_index_id = i['id']
return cls.query.find(dict(
user_id=user_id,
project_id=project_id,
app_config_id=app_config_id,
artifact_index_id=artifact_index_id)).count() != 0
@classmethod
def deliver(cls, nid, artifact_index_id, topic):
'''Called in the notification message handler to deliver notification IDs
to the appropriate mailboxes. Atomically appends the nids
to the appropriate mailboxes.
'''
d = {
'project_id':c.project._id,
'app_config_id':c.app.config._id,
'artifact_index_id':{'$in':[None, artifact_index_id]},
'topic':{'$in':[None, topic]}
}
for mbox in cls.query.find(d):
mbox.query.update(
dict(_id=mbox._id),
{'$push':dict(queue=nid),
'$set':dict(last_modified=datetime.utcnow())})
# Make sure the mbox doesn't stick around to be flush()ed
session(mbox).expunge(mbox)
@classmethod
def fire_ready(cls):
'''Fires all direct subscriptions with notifications as well as
all summary & digest subscriptions with notifications that are ready
'''
now = datetime.utcnow()
# Queries to find all matching subscription objects
q_direct = dict(
type='direct',
queue={'$ne':[]})
if MAILBOX_QUIESCENT:
q_direct['last_modified']={'$lt':now - MAILBOX_QUIESCENT}
q_digest = dict(
type={'$in': ['digest', 'summary']},
next_scheduled={'$lt':now})
for mbox in cls.query.find(q_direct):
mbox = mbox.query.find_and_modify(
query=dict(_id=mbox._id),
update={'$set': dict(
queue=[])})
mbox.fire(now)
for mbox in cls.query.find(q_digest):
next_scheduled = now
if mbox.frequency.unit == 'day':
next_scheduled += timedelta(days=mbox.frequency.n)
elif mbox.frequency.unit == 'week':
next_scheduled += timedelta(days=7 * mbox.frequency.n)
elif mbox.frequency.unit == 'month':
next_scheduled += timedelta(days=30 * mbox.frequency.n)
mbox = mbox.query.find_and_modify(
query=dict(_id=mbox._id),
update={'$set': dict(
next_scheduled=next_scheduled,
queue=[])})
mbox.fire(now)
def fire(self, now):
notifications = Notification.query.find(dict(_id={'$in':self.queue}))
if self.type == 'direct':
ngroups = defaultdict(list)
for n in notifications:
if n.topic == 'message':
n.send_direct(self.user_id)
# Messages must be sent individually so they can be replied
# to individually
else:
key = (n.subject, n.from_address, n.reply_to_address, n.author_id)
ngroups[key].append(n)
# Accumulate messages from same address with same subject
for (subject, from_address, reply_to_address, author_id), ns in ngroups.iteritems():
if len(ns) == 1:
n.send_direct(self.user_id)
else:
Notification.send_digest(
self.user_id, from_address, subject, ns, reply_to_address)
elif self.type == 'digest':
Notification.send_digest(
self.user_id, 'noreply@in.sf.net', 'Digest Email',
notifications)
elif self.type == 'summary':
Notification.send_summary(
self.user_id, 'noreply@in.sf.net', 'Digest Email',
notifications)