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# Copyright 2011 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Code for handling bug notification recipients in bug mail."""
__metaclass__ = type
__all__ = [
'BugNotificationRecipients',
]
from zope.interface import implements
from lp.services.mail.interfaces import INotificationRecipientSet
from lp.services.mail.notificationrecipientset import NotificationRecipientSet
class BugNotificationRecipients(NotificationRecipientSet):
"""A set of emails and rationales notified for a bug change.
Each email address registered in a BugNotificationRecipients is
associated to a string and a header that explain why the address is
being emailed. For instance, if the email address is that of a
distribution bug supervisor for a bug, the string and header will make
that fact clear.
The string is meant to be rendered in the email footer. The header
is meant to be used in an X-Launchpad-Message-Rationale header.
The first rationale registered for an email address is the one
which will be used, regardless of other rationales being added
for it later. This gives us a predictable policy of preserving
the first reason added to the registry; the callsite should
ensure that the manipulation of the BugNotificationRecipients
instance is done in preferential order.
Instances of this class are meant to be returned by
IBug.getBugNotificationRecipients().
"""
implements(INotificationRecipientSet)
def __init__(self, duplicateof=None):
"""Constructs a new BugNotificationRecipients instance.
If this bug is a duplicate, duplicateof should be used to
specify which bug ID it is a duplicate of.
Note that there are two duplicate situations that are
important:
- One is when this bug is a duplicate of another bug:
the subscribers to the main bug get notified of our
changes.
- Another is when the bug we are changing has
duplicates; in that case, direct subscribers of
duplicate bugs get notified of our changes.
These two situations are catered respectively by the
duplicateof parameter above and the addDupeSubscriber method.
Don't confuse them!
"""
NotificationRecipientSet.__init__(self)
self.duplicateof = duplicateof
self.subscription_filters = set()
def _addReason(self, person, reason, header):
"""Adds a reason (text and header) for a person.
It takes care of modifying the message when the person is notified
via a duplicate.
"""
if self.duplicateof is not None:
reason = reason + " (via bug %s)" % self.duplicateof.id
header = header + " via Bug %s" % self.duplicateof.id
reason = "You received this bug notification because you %s." % reason
self.add(person, reason, header)
def addDupeSubscriber(self, person, duplicate_bug=None):
"""Registers a subscriber of a duplicate of this bug."""
reason = "Subscriber of Duplicate"
if person.is_team:
text = ("are a member of %s, which is subscribed "
"to a duplicate bug report" % person.displayname)
reason += " @%s" % person.name
else:
text = "are subscribed to a\nduplicate bug report"
if duplicate_bug is not None:
text += " (%s)" % duplicate_bug.id
self._addReason(person, text, reason)
def addDirectSubscriber(self, person):
"""Registers a direct subscriber of this bug."""
reason = "Subscriber"
if person.is_team:
text = ("are a member of %s, which is subscribed "
"to the bug report" % person.displayname)
reason += " @%s" % person.name
else:
text = "are subscribed to the bug report"
self._addReason(person, text, reason)
def addAssignee(self, person):
"""Registers an assignee of a bugtask of this bug."""
reason = "Assignee"
if person.is_team:
text = ("are a member of %s, which is a bug assignee"
% person.displayname)
reason += " @%s" % person.name
else:
text = "are a bug assignee"
self._addReason(person, text, reason)
def addBugSupervisor(self, person):
"""Registers a bug supervisor of a bugtask's pillar of this bug."""
reason = "Bug Supervisor"
if person.is_team:
text = ("are a member of %s, which is a bug supervisor"
% person.displayname)
reason += " @%s" % person.name
else:
text = "are a bug supervisor"
self._addReason(person, text, reason)
def addSecurityContact(self, person):
"""Registers a security contact of a bugtask's pillar of this bug."""
reason = "Security Contact"
if person.is_team:
text = ("are a member of %s, which is a security contact"
% person.displayname)
reason += " @%s" % person.name
else:
text = "are a security contact"
self._addReason(person, text, reason)
def addMaintainer(self, person):
"""Registers a maintainer of a bugtask's pillar of this bug."""
reason = "Maintainer"
if person.is_team:
text = ("are a member of %s, which is a maintainer"
% person.displayname)
reason += " @%s" % person.name
else:
text = "are a maintainer"
self._addReason(person, text, reason)
def addStructuralSubscriber(self, person, target):
"""Registers a structural subscriber to this bug's target."""
reason = "Subscriber (%s)" % target.displayname
if person.is_team:
text = ("are a member of %s, which is subscribed to %s" %
(person.displayname, target.displayname))
reason += " @%s" % person.name
else:
text = "are subscribed to %s" % target.displayname
self._addReason(person, text, reason)
def addRegistrant(self, person, upstream):
"""Registers an upstream product registrant for this bug."""
reason = "Registrant (%s)" % upstream.displayname
if person.is_team:
text = ("are a member of %s, which is the registrant for %s" %
(person.displayname, upstream.displayname))
reason += " @%s" % person.name
else:
text = "are the registrant for %s" % upstream.displayname
self._addReason(person, text, reason)
def update(self, recipient_set):
"""See `INotificationRecipientSet`."""
super(BugNotificationRecipients, self).update(recipient_set)
self.subscription_filters.update(
recipient_set.subscription_filters)
def addFilter(self, subscription_filter):
if subscription_filter is not None:
self.subscription_filters.add(subscription_filter)
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