Mercurial > libervia-web
view src/pages/g/page_meta.py @ 995:f88325b56a6a
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> |
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date | Wed, 03 Jan 2018 01:10:12 +0100 |
parents | 5cdd77190a3b |
children | 01e95ec9df9e |
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#!/usr/bin/env python2.7 # -*- coding: utf-8 -*- from libervia.server.constants import Const as C from sat.core.i18n import _ from twisted.internet import defer from libervia.server import session_iface from sat.core.log import getLogger log = getLogger('pages/g') access = C.PAGES_ACCESS_PUBLIC template = u"invitation/welcome.html" @defer.inlineCallbacks def parse_url(self, request): """check invitation id in URL and start session if needed if a session already exists for an other guest/profile, it will be purged """ try: invitation_id = self.nextPath(request) except IndexError: self.pageError(request) sat_session, guest_session = self.host.getSessionData(request, session_iface.ISATSession, session_iface.ISATGuestSession) current_id = guest_session.id if current_id is not None and current_id != invitation_id: log.info(_(u'killing guest session [{old_id}] because it is connecting with an other ID [{new_id}]').format( old_id = current_id, new_id = invitation_id)) self.host.purgeSession(request) sat_session, guest_session = self.host.getSessionData(request, session_iface.ISATSession, session_iface.ISATGuestSession) current_id = None # FIXME: id non mis à zéro ici profile = None profile = sat_session.profile if profile is not None and current_id is None: log.info(_(u'killing current profile session [{profile}] because a guest id is used').format( profile = profile)) self.host.purgeSession(request) sat_session, guest_session = self.host.getSessionData(request, session_iface.ISATSession, session_iface.ISATGuestSession) profile = None if current_id is None: log.debug(_(u"checking invitation [{id}]").format(id=invitation_id)) try: data = yield self.host.bridge.invitationGet(invitation_id) except Exception: self.pageError(request, C.HTTP_UNAUTHORIZED) else: guest_session.id = invitation_id guest_session.data = data else: data = guest_session.data if profile is None: log.debug(_(u"connecting profile [{}]").format(profile)) # we need to connect the profile profile = data['guest_profile'] password = data['password'] try: yield self.host.bridge.connect(profile, password, {}) except Exception as e: log.warning(_(u"Can't connect profile: {msg}").format( msg=e)) # FIXME: no good error code correspond # maybe use a custom one? self.pageError(request, code=C.HTTP_SERVICE_UNAVAILABLE) log.info(_(u"guest session started, connected with profile [{profile}]".format( profile = profile))) sat_session.profile = profile # we copy data useful in templates template_data = request.template_data template_data['norobots'] = True if u'name' in data: template_data[u'name'] = data[u'name'] if u'language' in data: template_data[u'locale'] = data[u'language'] def prepare_render(self, request): template_data = request.template_data guest_session = self.host.getSessionData(request, session_iface.ISATGuestSession) main_uri = guest_session.data.get('main_uri') template_data[u"include_url"] = self.getPagePathFromURI(main_uri)