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Notification Customizations

Add or change email header
Add ticket fields to email headers
Attachments in Notification Emails
Reply-To Ticket Owner
Reply-To Ticket Notification Emails

TracNotification customizations can often be implemented with a short plugin. Some custom examples are given on this page. Trac ≥ 1.2 is needed for all of these examples.

Add or change email header

Some projects like to add or change special email headers to notification emails.

For example by default Trac sends notifications with email header Precedence: bulk, but some projects prefer to use Precedence: list:

Create a single file plugin that implements IEmailDecorator:

# -*- coding: utf-8 -*-
#
# Copyright (C) 2017 Edgewall Software
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://trac.edgewall.org/wiki/TracLicense.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at http://trac.edgewall.org/log/.

from trac.core import Component, implements
from trac.notification.api import IEmailDecorator
from trac.notification.mail import set_header

class ListPrecedenceEmailDecorator(Component):

    implements(IEmailDecorator)

    # IEmailDecorator methods
    
    def decorate_message(self, event, message, charset):
        set_header(message, 'Precedence', 'list', charset)

Add ticket fields to email headers

Some projects need email headers with the current or changed values of ticket fields:

Create a single file plugin that implements IEmailDecorator:

# -*- coding: utf-8 -*-
#
# Copyright (C) 2017 Edgewall Software
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://trac.edgewall.org/wiki/TracLicense.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at http://trac.edgewall.org/log/.

from trac.config import ListOption
from trac.core import Component, implements
from trac.notification.api import IEmailDecorator
from trac.notification.mail import set_header

class TicketFieldEmailDecorator(Component):

    implements(IEmailDecorator)

    smtp_x_trac_ticket_headers = ListOption('notification',
            'smtp_x_trac_ticket_headers', 'CHANGED',
            doc="""Possible values: ''ALL'', ''CHANGED'' or comma-separated
            list of ticket properties.

            Those properties are put into the e-mail headers when notifying
            about ticket updates.""")

    # IEmailDecorator methods
    
    def decorate_message(self, event, message, charset):
        if event.realm != 'ticket' or event.category == 'batchmodify':
            return
        def header(value, *parts):
            name = '-'.join(part.capitalize() for part in parts)
            set_header(message, name, value, charset)
        fields = list(self.smtp_x_trac_ticket_headers)
        prefix = 'X-Trac-Ticket'
        if fields == ['CHANGED']:
            for item, change in event.changes['fields'].iteritems():
                for type, value in change.iteritems():
                    header(value, prefix, item, type)
        elif fields == ['ALL']:
            for item in event.target.values:
                header(event.target.values[item], prefix, item)
        else:
            for item in fields:
                if item in event.target.values:
                    header(event.target.values[item], prefix, item)

Set the configuration [notification] smtp_x_trac_ticket_headers to ALL or to a list of ticket field names.

Attachments in Notification Emails

This email decorator can be used to send new ticket attachments as email attachments with the notification emails.

Create a single file plugin that implements IEmailDecorator:

# -*- coding: utf-8 -*-
#
# Copyright (C) 2017 Edgewall Software
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://trac.edgewall.org/wiki/TracLicense.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at http://trac.edgewall.org/log/.

from email.mime.application import MIMEApplication

from trac.core import Component, implements
from trac.notification.api import IEmailDecorator

class AttachmentEmailDecorator(Component):

    implements(IEmailDecorator)

    # IEmailDecorator methods
    
    def decorate_message(self, event, message, charset):
        if event.category == 'attachment added':
            attachment = event.attachment
            filename = attachment.filename
            with attachment.open() as fd:
                part = MIMEApplication(fd.read(), Name=filename)
            part['Content-Disposition'] = 'attachment; filename="%s"' % filename
            message.attach(part)

Reply-To Ticket Owner

Some projects want to replies to ticket email notifications to be directly sent to the ticket owner's email address.

Create a single file plugin that implements IEmailDecorator:

# -*- coding: utf-8 -*-
#
# Copyright (C) 2017 Edgewall Software
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://trac.edgewall.org/wiki/TracLicense.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at http://trac.edgewall.org/log/.

from trac.core import Component, implements
from trac.notification.api import IEmailDecorator
from trac.notification.mail import RecipientMatcher, set_header

class ReplyToTicketOwnerEmailDecorator(Component):
    """Use the ticket owner in the Reply-To header in notification emails."""

    implements(IEmailDecorator)

    def decorate_message(self, event, message, charset):
        if event.realm != 'ticket':
            return
        owner = event.target['owner']
        matcher = RecipientMatcher(self.env)
        owner = matcher.match_from_author(owner)
        if owner:
            set_header(message, 'Reply-To', owner, charset)

Variations

Reply to ticket updater by changing event.target['owner'] to event.author.

Reply-To Ticket Notification Emails

th:EmailtoTracScript and a small plugin to change the Reply-To address allow users to reply directly to notification emails to append comments to a ticket.

The Reply-To header is changed depending on the ticket id so replies are sent to for example 10044@trac-hacks.org and can be appended to ticket #10044:

Create a single file plugin that implements IEmailDecorator:

# -*- coding: utf-8 -*-
#
# Copyright (C) 2017 Edgewall Software
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://trac.edgewall.org/wiki/TracLicense.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at http://trac.edgewall.org/log/.

from trac.core import Component, implements
from trac.config import Option
from trac.notification.api import IEmailDecorator
from trac.notification.mail import set_header

class ReplyToTicketDecorator(Component):
    """Replaces the 'Reply-To' header for tickets with a dynamic email address.

    Uses a new config option 'ticket_smtp_replyto'.
    """
    implements(IEmailDecorator)

    ticket_smtp_replyto = Option('notification', 'ticket_smtp_replyto', '__id__@localhost',
                """Reply-To address for ticket notification emails.

                   ` __id__` is replaced with the ticket id.""")

    def decorate_message(self, event, message, charset):
        if event.realm == 'ticket':
            replyto = self.ticket_email_replyto.replace('__id__', str(event.target.id))
            set_header(message, 'Reply-To', replyto, charset)

Install and configure th:EmailtoTracScript.

Last modified 6 years ago Last modified on Sep 6, 2018, 3:39:36 AM

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