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annotate pylons_app/lib/simplehg.py @ 171:52bbeb1e813f

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Added universal cache invalidator for two cached functions. added invalidation when repository was added or deleted, and another invalidation when there was a mercurial command involved.
author Marcin Kuzminski <marcin@python-works.com>
date Fri, 21 May 2010 02:44:40 +0200
parents f8ae5c1dfae2
children 93bd77e1f3c1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 import os
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2 from mercurial.hgweb import hgweb
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3 from mercurial.hgweb.request import wsgiapplication
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4 from pylons_app.lib.utils import make_ui, invalidate_cache
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5 from pylons.controllers.util import abort
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6 from webob.exc import HTTPNotFound
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7 class SimpleHg(object):
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8
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9 def __init__(self, application, config):
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10 self.application = application
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11 self.config = config
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12
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13 def __call__(self, environ, start_response):
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14 if not is_mercurial(environ):
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15 return self.application(environ, start_response)
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16 else:
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17 try:
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18 repo_name = environ['PATH_INFO'].split('/')[1]
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19 except:
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20 return HTTPNotFound()(environ, start_response)
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21
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22 #since we wrap into hgweb, just reset the path
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23 environ['PATH_INFO'] = '/'
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24 self.baseui = make_ui()
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25 self.basepath = self.baseui.configitems('paths')[0][1]\
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26 .replace('*', '')
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27 self.repo_path = os.path.join(self.basepath, repo_name)
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28 try:
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29 app = wsgiapplication(self._make_app)
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30 except Exception as e:
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31 return HTTPNotFound()(environ, start_response)
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32
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33 """we know that some change was made to repositories and we should
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34 invalidate the cache to see the changes right away"""
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35 invalidate_cache('full_changelog', repo_name)
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36 return app(environ, start_response)
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37
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38 def _make_app(self):
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39 hgserve = hgweb(self.repo_path)
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40 return self.load_web_settings(hgserve)
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43 def load_web_settings(self, hgserve):
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44 repoui = make_ui(os.path.join(self.repo_path, '.hg', 'hgrc'), False)
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45 #set the global ui for hgserve
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46 hgserve.repo.ui = self.baseui
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48 if repoui:
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49 #set the repository based config
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50 hgserve.repo.ui = repoui
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52 return hgserve
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53
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54 def is_mercurial(environ):
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55 """
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56 Returns True if request's target is mercurial server - header
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57 ``HTTP_ACCEPT`` of such request would start with ``application/mercurial``.
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58 """
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59 http_accept = environ.get('HTTP_ACCEPT')
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60 if http_accept and http_accept.startswith('application/mercurial'):
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61 return True
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62 return False
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