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Viewing changes to lib/lp/bugs/subscribers/bug.py

[r=stevenk][bug=52915] Notify new project maintainer when a private
        bugtask is re-targetted to the project.

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lib/lp/bugs/subscribers/bug.py
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from canonical.launchpad.webapp.publisher import canonical_url
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from lp.bugs.adapters.bugchange import (
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    BugDuplicateChange,
 
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    BugTaskTargetChange,
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    BugTaskAssigneeChange,
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    get_bug_changes,
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    )
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from lp.bugs.mail.newbug import generate_bug_add_email
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from lp.bugs.model.bug import get_also_notified_subscribers
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from lp.registry.interfaces.person import IPerson
 
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from lp.registry.interfaces.product import IProduct
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from lp.services.mail.sendmail import (
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    format_address,
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    sendmail,
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                        level=change.change_level,
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                        include_master_dupe_subscribers=False))
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                recipients.update(change_recipients)
 
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            # Additionally, if we are re-targetting a bugtask for a private
 
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            # bug, we need to ensure the new bug supervisor and maintainer are
 
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            # notified (if they can view the bug).
 
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            # If they are the same person, only send one notification.
 
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            if (isinstance(change, BugTaskTargetChange) and
 
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                  old_bugtask is not None and bug_delta.bug.private):
 
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                bugtask_deltas = bug_delta.bugtask_deltas
 
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                if not isinstance(bugtask_deltas, (list, tuple)):
 
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                    bugtask_deltas = [bugtask_deltas]
 
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                for bugtask_delta in bugtask_deltas:
 
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                    if not bugtask_delta.target:
 
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                        continue
 
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                    new_target = bugtask_delta.bugtask.target
 
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                    if not new_target or not IProduct.providedBy(new_target):
 
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                        continue
 
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                    if bug_delta.bug.userCanView(new_target.owner):
 
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                        recipients.addMaintainer(new_target.owner)
 
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                    if (new_target.bug_supervisor and not
 
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                        new_target.bug_supervisor.inTeam(new_target.owner) and
 
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                        bug_delta.bug.userCanView(new_target.bug_supervisor)):
 
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                            recipients.addBugSupervisor(
 
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                                new_target.bug_supervisor)
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            bug_delta.bug.addChange(change, recipients=recipients)
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