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annotate src/pages/g/page_meta.py @ 995:f88325b56a6a

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server: dynamic pages first draft: /!\ new dependency: autobahn This patch introduce server part of dynamic pages. Dynamic pages use websockets to establish constant connection with a Libervia page, allowing to receive real time data or update it. The feature is activated by specifying "dynamic = true" in the page. Once activated, page can implement "on_data" method which will be called when data are sent by the page. To send data the other way, the page can use request.sendData. The new "registerSignal" method allows to use an "on_signal" method to be called each time given signal is received, with automatic (and optional) filtering on profile. New renderPartial and renderAndUpdate method allow to append new HTML elements to the dynamic page.
author Goffi <goffi@goffi.org>
date Wed, 03 Jan 2018 01:10:12 +0100
parents 5cdd77190a3b
children 01e95ec9df9e
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1 #!/usr/bin/env python2.7
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2 # -*- coding: utf-8 -*-
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3
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4 from libervia.server.constants import Const as C
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5 from sat.core.i18n import _
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6 from twisted.internet import defer
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7 from libervia.server import session_iface
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8 from sat.core.log import getLogger
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9 log = getLogger('pages/g')
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10
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11 access = C.PAGES_ACCESS_PUBLIC
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12 template = u"invitation/welcome.html"
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13
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14
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15 @defer.inlineCallbacks
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16 def parse_url(self, request):
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17 """check invitation id in URL and start session if needed
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18
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19 if a session already exists for an other guest/profile, it will be purged
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20 """
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21 try:
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22 invitation_id = self.nextPath(request)
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23 except IndexError:
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24 self.pageError(request)
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25
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26 sat_session, guest_session = self.host.getSessionData(request, session_iface.ISATSession, session_iface.ISATGuestSession)
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27 current_id = guest_session.id
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28
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29 if current_id is not None and current_id != invitation_id:
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30 log.info(_(u'killing guest session [{old_id}] because it is connecting with an other ID [{new_id}]').format(
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31 old_id = current_id,
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32 new_id = invitation_id))
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33 self.host.purgeSession(request)
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34 sat_session, guest_session = self.host.getSessionData(request, session_iface.ISATSession, session_iface.ISATGuestSession)
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35 current_id = None # FIXME: id non mis à zéro ici
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36 profile = None
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37
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38 profile = sat_session.profile
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39 if profile is not None and current_id is None:
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40 log.info(_(u'killing current profile session [{profile}] because a guest id is used').format(
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41 profile = profile))
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42 self.host.purgeSession(request)
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43 sat_session, guest_session = self.host.getSessionData(request, session_iface.ISATSession, session_iface.ISATGuestSession)
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44 profile = None
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45
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46 if current_id is None:
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47 log.debug(_(u"checking invitation [{id}]").format(id=invitation_id))
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48 try:
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49 data = yield self.host.bridge.invitationGet(invitation_id)
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50 except Exception:
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51 self.pageError(request, C.HTTP_UNAUTHORIZED)
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52 else:
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53 guest_session.id = invitation_id
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54 guest_session.data = data
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55 else:
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56 data = guest_session.data
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57
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58 if profile is None:
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59 log.debug(_(u"connecting profile [{}]").format(profile))
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60 # we need to connect the profile
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61 profile = data['guest_profile']
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62 password = data['password']
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63 try:
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64 yield self.host.bridge.connect(profile, password, {})
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65 except Exception as e:
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66 log.warning(_(u"Can't connect profile: {msg}").format(
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67 msg=e))
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68 # FIXME: no good error code correspond
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69 # maybe use a custom one?
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70 self.pageError(request, code=C.HTTP_SERVICE_UNAVAILABLE)
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71
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72 log.info(_(u"guest session started, connected with profile [{profile}]".format(
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73 profile = profile)))
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74 sat_session.profile = profile
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75
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76 # we copy data useful in templates
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77 template_data = request.template_data
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78 template_data['norobots'] = True
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79 if u'name' in data:
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80 template_data[u'name'] = data[u'name']
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81 if u'language' in data:
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82 template_data[u'locale'] = data[u'language']
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83
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84
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85 def prepare_render(self, request):
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86 template_data = request.template_data
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87 guest_session = self.host.getSessionData(request, session_iface.ISATGuestSession)
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88 main_uri = guest_session.data.get('main_uri')
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89 template_data[u"include_url"] = self.getPagePathFromURI(main_uri)