Mercurial > libervia-backend
annotate src/bridge/bridge_constructor/constructors/pb/pb_core_template.py @ 2248:a81261cee29b
jp (output/template): initialize template rendered only if a rendering is actually needed
author | Goffi <goffi@goffi.org> |
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date | Sun, 21 May 2017 15:52:23 +0200 |
parents | 5e79ba00c1e2 |
children | 8b37a62336c3 |
rev | line source |
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2092
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1 #!/usr/bin/env python2 |
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2 #-*- coding: utf-8 -*- |
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3 |
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4 # SAT: a jabber client |
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5 # Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org) |
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6 |
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7 # This program is free software: you can redistribute it and/or modify |
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8 # it under the terms of the GNU Affero General Public License as published by |
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9 # the Free Software Foundation, either version 3 of the License, or |
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10 # (at your option) any later version. |
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11 |
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12 # This program is distributed in the hope that it will be useful, |
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU Affero General Public License for more details. |
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16 |
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17 # You should have received a copy of the GNU Affero General Public License |
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 |
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21 from sat.core.log import getLogger |
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22 log = getLogger(__name__) |
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23 from twisted.spread import jelly, pb |
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24 from twisted.internet import reactor |
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25 |
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26 |
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27 ## jelly hack |
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28 # we monkey patch jelly to handle namedtuple |
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29 ori_jelly = jelly._Jellier.jelly |
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30 |
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31 def fixed_jelly(self, obj): |
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32 """this method fix handling of namedtuple""" |
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33 if isinstance(obj, tuple) and not obj is tuple: |
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34 obj = tuple(obj) |
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35 return ori_jelly(self, obj) |
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36 |
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37 jelly._Jellier.jelly = fixed_jelly |
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38 |
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39 |
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40 class PBRoot(pb.Root): |
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41 |
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42 def __init__(self): |
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43 self.signals_handlers = [] |
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44 |
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45 def remote_initBridge(self, signals_handler): |
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46 self.signals_handlers.append(signals_handler) |
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47 log.info(u"registered signal handler") |
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48 |
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49 def sendSignalEb(self, failure, signal_name): |
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50 log.error(u"Error while sending signal {name}: {msg}".format( |
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51 name = signal_name, |
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52 msg = failure, |
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53 )) |
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54 |
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55 def sendSignal(self, name, args, kwargs): |
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56 to_remove = [] |
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57 for handler in self.signals_handlers: |
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58 try: |
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59 d = handler.callRemote(name, *args, **kwargs) |
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60 except pb.DeadReferenceError: |
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61 to_remove.append(handler) |
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62 else: |
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63 d.addErrback(self.sendSignalEb, name) |
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64 if to_remove: |
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65 for handler in to_remove: |
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66 log.debug(u"Removing signal handler for dead frontend") |
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67 self.signals_handlers.remove(handler) |
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68 |
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69 ##METHODS_PART## |
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70 |
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71 |
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72 class Bridge(object): |
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73 |
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74 def __init__(self): |
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75 log.info("Init Perspective Broker...") |
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76 self.root = PBRoot() |
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77 reactor.listenTCP(8789, pb.PBServerFactory(self.root)) |
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78 |
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79 def sendSignal(self, name, *args, **kwargs): |
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80 self.root.sendSignal(name, args, kwargs) |
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81 |
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82 def remote_initBridge(self, signals_handler): |
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83 self.signals_handlers.append(signals_handler) |
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84 log.info(u"registered signal handler") |
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85 |
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86 def register_method(self, name, callback): |
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87 log.debug("registering PB bridge method [%s]" % name) |
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88 setattr(self.root, "remote_"+name, callback) |
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89 # self.root.register_method(name, callback) |
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90 |
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91 def addMethod(self, name, int_suffix, in_sign, out_sign, method, async=False, doc={}): |
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92 """Dynamically add a method to PB Bridge""" |
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93 #FIXME: doc parameter is kept only temporary, the time to remove it from calls |
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94 log.debug("Adding method {name} to PB bridge".format(name=name)) |
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95 self.register_method(name, method) |
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96 |
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97 def addSignal(self, name, int_suffix, signature, doc={}): |
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98 log.debug("Adding signal {name} to PB bridge".format(name=name)) |
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99 setattr(self, name, lambda *args, **kwargs: self.sendSignal(name, *args, **kwargs)) |
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100 |
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101 ##SIGNALS_PART## |