author | Nicolas Chauvat <nicolas.chauvat@logilab.fr> |
Thu, 28 Oct 2010 19:37:59 +0200 | |
branch | stable |
changeset 6657 | 402bff898024 |
parent 5736 | 375819ec7d43 |
child 7815 | 2a164a9cf81c |
permissions | -rw-r--r-- |
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1 |
# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
8167de96c523
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parents:
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2 |
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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parents:
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3 |
# |
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parents:
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4 |
# This file is part of CubicWeb. |
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parents:
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5 |
# |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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6 |
# CubicWeb is free software: you can redistribute it and/or modify it under the |
8167de96c523
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parents:
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7 |
# terms of the GNU Lesser General Public License as published by the Free |
8167de96c523
proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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8 |
# Software Foundation, either version 2.1 of the License, or (at your option) |
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parents:
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9 |
# any later version. |
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parents:
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10 |
# |
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11 |
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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parents:
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12 |
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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13 |
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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14 |
# details. |
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parents:
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15 |
# |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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16 |
# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""Common utilies to format / semd emails.""" |
0 | 19 |
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20 |
__docformat__ = "restructuredtext en" |
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||
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from base64 import b64encode, b64decode |
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23 |
from time import time |
0 | 24 |
from email.MIMEMultipart import MIMEMultipart |
25 |
from email.MIMEText import MIMEText |
|
26 |
from email.MIMEImage import MIMEImage |
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27 |
from email.Header import Header |
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try: |
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from socket import gethostname |
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except ImportError: |
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31 |
def gethostname(): # gae |
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return 'XXX' |
0 | 33 |
|
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from cubicweb.view import EntityView |
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35 |
from cubicweb.entity import Entity |
0 | 36 |
|
37 |
def header(ustring): |
|
38 |
return Header(ustring.encode('UTF-8'), 'UTF-8') |
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39 |
||
40 |
def addrheader(uaddr, uname=None): |
|
41 |
# even if an email address should be ascii, encode it using utf8 since |
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# automatic tests may generate non ascii email address |
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delete-trailing-whitespace
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addr = uaddr.encode('UTF-8') |
0 | 44 |
if uname: |
45 |
return '%s <%s>' % (header(uname).encode(), addr) |
|
46 |
return addr |
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47 |
||
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def construct_message_id(appid, eid, withtimestamp=True): |
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if withtimestamp: |
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addrpart = 'eid=%s×tamp=%.10f' % (eid, time()) |
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52 |
else: |
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addrpart = 'eid=%s' % eid |
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# we don't want any equal sign nor trailing newlines |
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leftpart = b64encode(addrpart, '.-').rstrip().rstrip('=') |
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return '<%s@%s.%s>' % (leftpart, appid, gethostname()) |
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57 |
|
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58 |
|
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def parse_message_id(msgid, appid): |
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if msgid[0] == '<': |
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msgid = msgid[1:] |
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if msgid[-1] == '>': |
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msgid = msgid[:-1] |
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try: |
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values, qualif = msgid.split('@') |
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padding = len(values) % 4 |
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values = b64decode(str(values + '='*padding), '.-') |
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values = dict(v.split('=') for v in values.split('&')) |
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fromappid, host = qualif.split('.', 1) |
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except: |
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return None |
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if appid != fromappid or host != gethostname(): |
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return None |
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return values |
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75 |
|
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0 | 77 |
def format_mail(uinfo, to_addrs, content, subject="", |
78 |
cc_addrs=(), msgid=None, references=(), config=None): |
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"""Sends an Email to 'e_addr' with content 'content', and subject 'subject' |
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||
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to_addrs and cc_addrs are expected to be a list of email address without |
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name |
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""" |
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assert type(content) is unicode, repr(content) |
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msg = MIMEText(content.encode('UTF-8'), 'plain', 'UTF-8') |
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# safety: keep only the first newline |
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87 |
try: |
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subject = subject.splitlines()[0] |
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89 |
msg['Subject'] = header(subject) |
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except IndexError: |
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pass # no subject |
0 | 92 |
if uinfo.get('email'): |
93 |
email = uinfo['email'] |
|
94 |
elif config and config['sender-addr']: |
|
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email = unicode(config['sender-addr']) |
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96 |
else: |
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email = u'' |
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98 |
if uinfo.get('name'): |
|
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name = uinfo['name'] |
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elif config and config['sender-addr']: |
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101 |
name = unicode(config['sender-name']) |
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else: |
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103 |
name = u'' |
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msg['From'] = addrheader(email, name) |
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if config and config['sender-addr'] and config['sender-addr'] != email: |
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appaddr = addrheader(config['sender-addr'], config['sender-name']) |
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107 |
msg['Reply-to'] = '%s, %s' % (msg['From'], appaddr) |
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elif email: |
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109 |
msg['Reply-to'] = msg['From'] |
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if config is not None: |
|
111 |
msg['X-CW'] = config.appid |
|
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112 |
unique_addrs = lambda addrs: sorted(set(addr for addr in addrs if addr is not None)) |
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113 |
msg['To'] = ', '.join(addrheader(addr) for addr in unique_addrs(to_addrs)) |
0 | 114 |
if cc_addrs: |
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msg['Cc'] = ', '.join(addrheader(addr) for addr in unique_addrs(cc_addrs)) |
0 | 116 |
if msgid: |
117 |
msg['Message-id'] = msgid |
|
118 |
if references: |
|
119 |
msg['References'] = ', '.join(references) |
|
120 |
return msg |
|
121 |
||
122 |
||
123 |
class HtmlEmail(MIMEMultipart): |
|
124 |
||
125 |
def __init__(self, subject, textcontent, htmlcontent, |
|
126 |
sendermail=None, sendername=None, recipients=None, ccrecipients=None): |
|
127 |
MIMEMultipart.__init__(self, 'related') |
|
128 |
self['Subject'] = header(subject) |
|
129 |
self.preamble = 'This is a multi-part message in MIME format.' |
|
130 |
# Attach alternative text message |
|
131 |
alternative = MIMEMultipart('alternative') |
|
132 |
self.attach(alternative) |
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133 |
msgtext = MIMEText(textcontent.encode('UTF-8'), 'plain', 'UTF-8') |
|
134 |
alternative.attach(msgtext) |
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135 |
# Attach html message |
|
136 |
msghtml = MIMEText(htmlcontent.encode('UTF-8'), 'html', 'UTF-8') |
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137 |
alternative.attach(msghtml) |
|
138 |
if sendermail or sendername: |
|
139 |
self['From'] = addrheader(sendermail, sendername) |
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140 |
if recipients: |
|
141 |
self['To'] = ', '.join(addrheader(addr) for addr in recipients if addr is not None) |
|
142 |
if ccrecipients: |
|
143 |
self['Cc'] = ', '.join(addrheader(addr) for addr in ccrecipients if addr is not None) |
|
144 |
||
145 |
def attach_image(self, data, htmlId): |
|
146 |
image = MIMEImage(data) |
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147 |
image.add_header('Content-ID', '<%s>' % htmlId) |
|
148 |
self.attach(image) |
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class NotificationView(EntityView): |
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"""abstract view implementing the "email" API (eg to simplify sending |
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153 |
notification) |
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154 |
""" |
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155 |
# XXX refactor this class to work with len(rset) > 1 |
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156 |
|
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157 |
msgid_timestamp = True |
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158 |
|
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159 |
# this is usually the method to call |
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160 |
def render_and_send(self, **kwargs): |
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161 |
"""generate and send an email message for this view""" |
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162 |
delayed = kwargs.pop('delay_to_commit', None) |
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163 |
for recipients, msg in self.render_emails(**kwargs): |
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164 |
if delayed is None: |
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165 |
self.send(recipients, msg) |
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166 |
elif delayed: |
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167 |
self.send_on_commit(recipients, msg) |
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168 |
else: |
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169 |
self.send_now(recipients, msg) |
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170 |
|
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171 |
def cell_call(self, row, col=0, **kwargs): |
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172 |
self.w(self._cw._(self.content) % self.context(**kwargs)) |
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173 |
|
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174 |
def render_emails(self, **kwargs): |
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175 |
"""generate and send emails for this view (one per recipient)""" |
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176 |
self._kwargs = kwargs |
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177 |
recipients = self.recipients() |
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178 |
if not recipients: |
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179 |
self.info('skipping %s notification, no recipients', self.__regid__) |
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180 |
return |
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181 |
if self.cw_rset is not None: |
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182 |
entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0) |
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183 |
# if the view is using timestamp in message ids, no way to reference |
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184 |
# previous email |
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185 |
if not self.msgid_timestamp: |
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186 |
refs = [self.construct_message_id(eid) |
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187 |
for eid in entity.cw_adapt_to('INotifiable').notification_references(self)] |
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188 |
else: |
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189 |
refs = () |
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190 |
msgid = self.construct_message_id(entity.eid) |
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191 |
else: |
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192 |
refs = () |
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193 |
msgid = None |
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194 |
req = self._cw |
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195 |
self.user_data = req.user_data() |
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196 |
origlang = req.lang |
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197 |
for something in recipients: |
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198 |
if isinstance(something, Entity): |
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199 |
# hi-jack self._cw to get a session for the returned user |
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200 |
self._cw = self._cw.hijack_user(something) |
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201 |
emailaddr = something.cw_adapt_to('IEmailable').get_email() |
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202 |
else: |
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203 |
emailaddr, lang = something |
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204 |
self._cw.set_language(lang) |
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205 |
# since the same view (eg self) may be called multiple time and we |
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206 |
# need a fresh stream at each iteration, reset it explicitly |
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207 |
self.w = None |
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208 |
# XXX call render before subject to set .row/.col attributes on the |
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209 |
# view |
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210 |
try: |
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211 |
content = self.render(row=0, col=0, **kwargs) |
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212 |
subject = self.subject() |
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213 |
except SkipEmail: |
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214 |
continue |
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215 |
except Exception, ex: |
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216 |
# shouldn't make the whole transaction fail because of rendering |
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# error (unauthorized or such) XXX check it doesn't actually |
218 |
# occurs due to rollback on such error |
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219 |
self.exception(str(ex)) |
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220 |
continue |
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221 |
msg = format_mail(self.user_data, [emailaddr], content, subject, |
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222 |
config=self._cw.vreg.config, msgid=msgid, references=refs) |
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223 |
yield [emailaddr], msg |
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224 |
# restore language |
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225 |
req.set_language(origlang) |
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226 |
|
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227 |
# recipients / email sending ############################################### |
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228 |
|
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229 |
def recipients(self): |
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230 |
"""return a list of either 2-uple (email, language) or user entity to |
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231 |
who this email should be sent |
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232 |
""" |
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233 |
finder = self._cw.vreg['components'].select( |
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234 |
'recipients_finder', self._cw, rset=self.cw_rset, |
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235 |
row=self.cw_row or 0, col=self.cw_col or 0) |
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236 |
return finder.recipients() |
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237 |
|
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238 |
def send_now(self, recipients, msg): |
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239 |
self._cw.vreg.config.sendmails([(msg, recipients)]) |
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240 |
|
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241 |
def send_on_commit(self, recipients, msg): |
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242 |
raise NotImplementedError |
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send = send_now |
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# email generation helpers ################################################# |
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def construct_message_id(self, eid): |
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return construct_message_id(self._cw.vreg.config.appid, eid, |
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self.msgid_timestamp) |
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def format_field(self, attr, value): |
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return ':%(attr)s: %(value)s' % {'attr': attr, 'value': value} |
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def format_section(self, attr, value): |
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return '%(attr)s\n%(ul)s\n%(value)s\n' % { |
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'attr': attr, 'ul': '-'*len(attr), 'value': value} |
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def subject(self): |
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entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0) |
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subject = self._cw._(self.message) |
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etype = entity.dc_type() |
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eid = entity.eid |
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login = self.user_data['login'] |
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return self._cw._('%(subject)s %(etype)s #%(eid)s (%(login)s)') % locals() |
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def context(self, **kwargs): |
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entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0) |
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for key, val in kwargs.iteritems(): |
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if val and isinstance(val, unicode) and val.strip(): |
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kwargs[key] = self._cw._(val) |
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kwargs.update({'user': self.user_data['login'], |
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'eid': entity.eid, |
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'etype': entity.dc_type(), |
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'url': entity.absolute_url(), |
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'title': entity.dc_long_title(),}) |
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return kwargs |
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class SkipEmail(Exception): |
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"""raise this if you decide to skip an email during its generation""" |