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annotate rhodecode/controllers/feed.py @ 3018:023f7873ef59 beta

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added caching layer into RSS/ATOM feeds - updated code for new LimitedDiffContainers - invalidate rss/atom cache keys on push -
author Marcin Kuzminski <marcin@python-works.com>
date Fri, 23 Nov 2012 11:54:14 +0100
parents 234435584a0d
children 30a226406fa4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # -*- coding: utf-8 -*-
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2 """
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3 rhodecode.controllers.feed
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4 ~~~~~~~~~~~~~~~~~~~~~~~~~~
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5
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6 Feed controller for rhodecode
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7
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8 :created_on: Apr 23, 2010
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9 :author: marcink
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89efedac4e6c 2012 copyrights
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10 :copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com>
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11 :license: GPLv3, see COPYING for more details.
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12 """
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13 # This program is free software: you can redistribute it and/or modify
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14 # it under the terms of the GNU General Public License as published by
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15 # the Free Software Foundation, either version 3 of the License, or
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16 # (at your option) any later version.
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17 #
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18 # This program is distributed in the hope that it will be useful,
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19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 # GNU General Public License for more details.
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22 #
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23 # You should have received a copy of the GNU General Public License
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24 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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25
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26 import logging
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27
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28 from pylons import url, response, tmpl_context as c
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29 from pylons.i18n.translation import _
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30
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31 from beaker.cache import cache_region, region_invalidate
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32 from webhelpers.feedgenerator import Atom1Feed, Rss201rev2Feed
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33
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34 from rhodecode.lib import helpers as h
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35 from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
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36 from rhodecode.lib.base import BaseRepoController
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37 from rhodecode.lib.diffs import DiffProcessor, LimitedDiffContainer
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38 from rhodecode.model.db import CacheInvalidation
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39
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40 log = logging.getLogger(__name__)
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41
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42
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43 class FeedController(BaseRepoController):
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44
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45 @LoginRequired(api_access=True)
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46 @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
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47 'repository.admin')
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48 def __before__(self):
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49 super(FeedController, self).__before__()
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50 #common values for feeds
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51 self.description = _('Changes on %s repository')
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52 self.title = self.title = _('%s %s feed') % (c.rhodecode_name, '%s')
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53 self.language = 'en-us'
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54 self.ttl = "5"
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55 self.feed_nr = 20
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56 # we need to protect from parsing huge diffs here other way
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57 # we can kill the server, 32*1024 chars is a reasonable limit
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58 self.feed_diff_limit = 32 * 1024
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59
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60 def _get_title(self, cs):
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61 return "%s" % (
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62 h.shorter(cs.message, 160)
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63 )
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64
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65 def __changes(self, cs):
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66 changes = []
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67 diff_processor = DiffProcessor(cs.diff(),
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68 diff_limit=self.feed_diff_limit)
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69 _parsed = diff_processor.prepare(inline_diff=False)
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70 limited_diff = False
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71 if isinstance(_parsed, LimitedDiffContainer):
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72 limited_diff = True
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73
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74 for st in _parsed:
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75 st.update({'added': st['stats'][0],
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76 'removed': st['stats'][1]})
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77 changes.append('\n %(operation)s %(filename)s '
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78 '(%(added)s lines added, %(removed)s lines removed)'
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79 % st)
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80 if limited_diff:
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81 changes = changes + ['\n ' +
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82 _('Changeset was too big and was cut off...')]
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83 return changes
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84
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85 def __get_desc(self, cs):
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86 desc_msg = []
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87 desc_msg.append('%s %s %s<br/>' % (h.person(cs.author),
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88 _('commited on'),
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89 h.fmt_date(cs.date)))
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90 #branches, tags, bookmarks
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91 if cs.branch:
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92 desc_msg.append('branch: %s<br/>' % cs.branch)
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93 if h.is_hg(c.rhodecode_repo):
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94 for book in cs.bookmarks:
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95 desc_msg.append('bookmark: %s<br/>' % book)
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96 for tag in cs.tags:
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97 desc_msg.append('tag: %s<br/>' % tag)
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98 # rev link
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99 _url = url('changeset_home', repo_name=cs.repository.name,
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100 revision=cs.raw_id, qualified=True)
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101 desc_msg.append('changesest: <a href="%s">%s</a>' % (_url, cs.raw_id[:8]))
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102
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103 desc_msg.append('<pre>')
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104 desc_msg.append(cs.message)
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105 desc_msg.append('\n')
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106 desc_msg.extend(self.__changes(cs))
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107 desc_msg.append('</pre>')
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108 return desc_msg
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109
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110 def atom(self, repo_name):
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111 """Produce an atom-1.0 feed via feedgenerator module"""
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112
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113 @cache_region('long_term')
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114 def _get_feed_from_cache(key):
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115 feed = Atom1Feed(
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116 title=self.title % repo_name,
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117 link=url('summary_home', repo_name=repo_name,
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118 qualified=True),
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119 description=self.description % repo_name,
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120 language=self.language,
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121 ttl=self.ttl
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122 )
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123
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124 for cs in reversed(list(c.rhodecode_repo[-self.feed_nr:])):
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125 feed.add_item(title=self._get_title(cs),
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126 link=url('changeset_home', repo_name=repo_name,
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127 revision=cs.raw_id, qualified=True),
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128 author_name=cs.author,
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129 description=''.join(self.__get_desc(cs)),
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130 pubdate=cs.date,
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131 )
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133 response.content_type = feed.mime_type
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134 return feed.writeString('utf-8')
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136 key = repo_name + '_ATOM'
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137 inv = CacheInvalidation.invalidate(key)
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138 if inv is not None:
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139 region_invalidate(_get_feed_from_cache, None, key)
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140 CacheInvalidation.set_valid(inv.cache_key)
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141 return _get_feed_from_cache(key)
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143 def rss(self, repo_name):
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144 """Produce an rss2 feed via feedgenerator module"""
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145
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146 @cache_region('long_term')
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147 def _get_feed_from_cache(key):
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148 feed = Rss201rev2Feed(
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149 title=self.title % repo_name,
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150 link=url('summary_home', repo_name=repo_name,
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151 qualified=True),
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152 description=self.description % repo_name,
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153 language=self.language,
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154 ttl=self.ttl
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155 )
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156
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157 for cs in reversed(list(c.rhodecode_repo[-self.feed_nr:])):
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158 feed.add_item(title=self._get_title(cs),
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159 link=url('changeset_home', repo_name=repo_name,
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160 revision=cs.raw_id, qualified=True),
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161 author_name=cs.author,
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162 description=''.join(self.__get_desc(cs)),
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163 pubdate=cs.date,
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164 )
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165
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166 response.content_type = feed.mime_type
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167 return feed.writeString('utf-8')
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168
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169 key = repo_name + '_RSS'
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170 inv = CacheInvalidation.invalidate(key)
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171 if inv is not None:
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172 region_invalidate(_get_feed_from_cache, None, key)
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173 CacheInvalidation.set_valid(inv.cache_key)
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174 return _get_feed_from_cache(key)
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175