Mercurial > libervia-backend
annotate sat/bridge/bridge_constructor/constructors/pb/pb_frontend_template.py @ 3028:ab2696e34d29
Python 3 port:
/!\ this is a huge commit
/!\ starting from this commit, SàT is needs Python 3.6+
/!\ SàT maybe be instable or some feature may not work anymore, this will improve with time
This patch port backend, bridge and frontends to Python 3.
Roughly this has been done this way:
- 2to3 tools has been applied (with python 3.7)
- all references to python2 have been replaced with python3 (notably shebangs)
- fixed files not handled by 2to3 (notably the shell script)
- several manual fixes
- fixed issues reported by Python 3 that where not handled in Python 2
- replaced "async" with "async_" when needed (it's a reserved word from Python 3.7)
- replaced zope's "implements" with @implementer decorator
- temporary hack to handle data pickled in database, as str or bytes may be returned,
to be checked later
- fixed hash comparison for password
- removed some code which is not needed anymore with Python 3
- deactivated some code which needs to be checked (notably certificate validation)
- tested with jp, fixed reported issues until some basic commands worked
- ported Primitivus (after porting dependencies like urwid satext)
- more manual fixes
author | Goffi <goffi@goffi.org> |
---|---|
date | Tue, 13 Aug 2019 19:08:41 +0200 |
parents | 003b8b4b56a7 |
children | a1bc34f90fa5 |
rev | line source |
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3028 | 1 #!/usr/bin/env python3 |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # SAT communication bridge |
2771 | 5 # Copyright (C) 2009-2019 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 from sat.core.log import getLogger |
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21 |
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22 log = getLogger(__name__) |
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23 from sat.core import exceptions |
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24 from twisted.spread import 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 class SignalsHandler(pb.Referenceable): |
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29 def __getattr__(self, name): |
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30 if name.startswith("remote_"): |
3028 | 31 log.debug("calling an unregistered signal: {name}".format(name=name[7:])) |
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32 return lambda *args, **kwargs: None |
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33 |
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34 else: |
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35 raise AttributeError(name) |
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36 |
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37 def register_signal(self, name, handler, iface="core"): |
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38 log.debug("registering signal {name}".format(name=name)) |
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39 method_name = "remote_" + name |
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40 try: |
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41 self.__getattribute__(self, method_name) |
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42 except AttributeError: |
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43 pass |
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44 else: |
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45 raise exceptions.InternalError( |
3028 | 46 "{name} signal handler has been registered twice".format( |
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47 name=method_name |
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48 ) |
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49 ) |
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50 setattr(self, method_name, handler) |
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51 |
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52 |
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53 class Bridge(object): |
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54 def __init__(self): |
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55 self.signals_handler = SignalsHandler() |
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56 |
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57 def __getattr__(self, name): |
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58 return lambda *args, **kwargs: self.call(name, args, kwargs) |
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59 |
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60 def remoteCallback(self, result, callback): |
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61 """call callback with argument or None |
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62 |
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63 if result is not None not argument is used, |
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64 else result is used as argument |
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65 @param result: remote call result |
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66 @param callback(callable): method to call on result |
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67 """ |
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68 if result is None: |
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69 callback() |
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70 else: |
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71 callback(result) |
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72 |
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73 def call(self, name, args, kwargs): |
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74 """call a remote method |
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75 |
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76 @param name(str): name of the bridge method |
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77 @param args(list): arguments |
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78 may contain callback and errback as last 2 items |
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79 @param kwargs(dict): keyword arguments |
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80 may contain callback and errback |
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81 """ |
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82 callback = errback = None |
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83 if kwargs: |
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84 try: |
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85 callback = kwargs.pop("callback") |
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86 except KeyError: |
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87 pass |
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88 try: |
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89 errback = kwargs.pop("errback") |
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90 except KeyError: |
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91 pass |
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92 elif len(args) >= 2 and callable(args[-1]) and callable(args[-2]): |
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93 errback = args.pop() |
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94 callback = args.pop() |
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95 d = self.root.callRemote(name, *args, **kwargs) |
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96 if callback is not None: |
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97 d.addCallback(self.remoteCallback, callback) |
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98 if errback is not None: |
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99 d.addErrback(errback) |
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100 |
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101 def _initBridgeEb(self, failure): |
3028 | 102 log.error("Can't init bridge: {msg}".format(msg=failure)) |
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103 |
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104 def _set_root(self, root): |
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105 """set remote root object |
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106 |
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107 bridge will then be initialised |
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108 """ |
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109 self.root = root |
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110 d = root.callRemote("initBridge", self.signals_handler) |
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111 d.addErrback(self._initBridgeEb) |
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112 return d |
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113 |
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114 def _generic_errback(self, failure): |
3028 | 115 log.error("bridge failure: {}".format(failure)) |
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116 |
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117 def bridgeConnect(self, callback, errback): |
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118 factory = pb.PBClientFactory() |
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119 reactor.connectTCP("localhost", 8789, factory) |
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120 d = factory.getRootObject() |
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121 d.addCallback(self._set_root) |
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122 d.addCallback(lambda __: callback()) |
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123 d.addErrback(errback) |
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124 |
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125 def register_signal(self, functionName, handler, iface="core"): |
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126 self.signals_handler.register_signal(functionName, handler, iface) |
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127 |
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128 |
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129 ##METHODS_PART## |