Mercurial > libervia-backend
annotate sat/bridge/bridge_constructor/constructors/pb/pb_core_template.py @ 2770:2d353b74010e
tools (common/data_objects): moved BlogItems._parseMetadata to a parsePubSubMetadata function, so it can be used in a more generic way
author | Goffi <goffi@goffi.org> |
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date | Fri, 11 Jan 2019 21:38:20 +0100 |
parents | 56f94936df1e |
children | 003b8b4b56a7 |
rev | line source |
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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 |
2483 | 5 # Copyright (C) 2009-2018 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 |
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23 log = getLogger(__name__) |
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24 from twisted.spread import jelly, pb |
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25 from twisted.internet import reactor |
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26 |
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27 |
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28 ## jelly hack |
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29 # we monkey patch jelly to handle namedtuple |
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30 ori_jelly = jelly._Jellier.jelly |
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31 |
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32 |
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33 def fixed_jelly(self, obj): |
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34 """this method fix handling of namedtuple""" |
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35 if isinstance(obj, tuple) and not obj is tuple: |
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36 obj = tuple(obj) |
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37 return ori_jelly(self, obj) |
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38 |
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39 |
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40 jelly._Jellier.jelly = fixed_jelly |
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41 |
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42 |
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43 class PBRoot(pb.Root): |
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44 def __init__(self): |
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45 self.signals_handlers = [] |
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46 |
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47 def remote_initBridge(self, signals_handler): |
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48 self.signals_handlers.append(signals_handler) |
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49 log.info(u"registered signal handler") |
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50 |
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51 def sendSignalEb(self, failure, signal_name): |
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52 log.error( |
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53 u"Error while sending signal {name}: {msg}".format( |
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54 name=signal_name, msg=failure |
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55 ) |
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56 ) |
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57 |
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58 def sendSignal(self, name, args, kwargs): |
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59 to_remove = [] |
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60 for handler in self.signals_handlers: |
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61 try: |
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62 d = handler.callRemote(name, *args, **kwargs) |
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63 except pb.DeadReferenceError: |
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64 to_remove.append(handler) |
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65 else: |
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66 d.addErrback(self.sendSignalEb, name) |
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67 if to_remove: |
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68 for handler in to_remove: |
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69 log.debug(u"Removing signal handler for dead frontend") |
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70 self.signals_handlers.remove(handler) |
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71 |
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72 |
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73 ##METHODS_PART## |
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74 |
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75 |
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76 class Bridge(object): |
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77 def __init__(self): |
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78 log.info("Init Perspective Broker...") |
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79 self.root = PBRoot() |
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80 reactor.listenTCP(8789, pb.PBServerFactory(self.root)) |
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81 |
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82 def sendSignal(self, name, *args, **kwargs): |
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83 self.root.sendSignal(name, args, kwargs) |
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84 |
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85 def remote_initBridge(self, signals_handler): |
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86 self.signals_handlers.append(signals_handler) |
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87 log.info(u"registered signal handler") |
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88 |
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89 def register_method(self, name, callback): |
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90 log.debug("registering PB bridge method [%s]" % name) |
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91 setattr(self.root, "remote_" + name, callback) |
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92 # self.root.register_method(name, callback) |
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93 |
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94 def addMethod(self, name, int_suffix, in_sign, out_sign, method, async=False, doc={}): |
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95 """Dynamically add a method to PB Bridge""" |
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96 # FIXME: doc parameter is kept only temporary, the time to remove it from calls |
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97 log.debug("Adding method {name} to PB bridge".format(name=name)) |
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98 self.register_method(name, method) |
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99 |
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100 def addSignal(self, name, int_suffix, signature, doc={}): |
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101 log.debug("Adding signal {name} to PB bridge".format(name=name)) |
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102 setattr( |
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103 self, name, lambda *args, **kwargs: self.sendSignal(name, *args, **kwargs) |
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104 ) |
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105 |
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106 |
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107 ##SIGNALS_PART## |