Mercurial > libervia-backend

annotate src/bridge/bridge_constructor/constructors/embedded/embedded_template.py @ 2309:c7a72b75232b

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jp (shell): shell command (REPL mode), first draft: This command launch jp in REPL mode, allowing do normal jp commands with some facilities. Command can be selected with "cmd" (e.g. "cmd blog"). An argument can be fixed with "use" (e.g. "use output fancy"). Command is launched with "do", or directly with its name if it doesn't conflict with a shell command. Arguments completion is still TODO (only shell commands are completed so far).
author Goffi <goffi@goffi.org>
date Thu, 06 Jul 2017 20:28:25 +0200
parents 442423faf220
children 8b37a62336c3
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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 # SàT: a XMPP 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 from sat.core.log import getLogger
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21 log = getLogger(__name__)
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22 from sat.core import exceptions
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23
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24
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25 class _Bridge(object):
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26 def __init__(self):
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27 log.debug(u"Init embedded bridge...")
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28 self._methods_cbs = {}
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29 self._signals_cbs = {
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30 "core": {},
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31 "plugin": {}
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32 }
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33
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34 def bridgeConnect(self, callback, errback):
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35 callback()
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36
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37 def register_method(self, name, callback):
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38 log.debug(u"registering embedded bridge method [{}]".format(name))
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39 if name in self._methods_cbs:
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40 raise exceptions.ConflictError(u"method {} is already regitered".format(name))
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41 self._methods_cbs[name] = callback
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42
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43 def register_signal(self, functionName, handler, iface="core"):
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44 iface_dict = self._signals_cbs[iface]
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45 if functionName in iface_dict:
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46 raise exceptions.ConflictError(u"signal {name} is already regitered for interface {iface}".format(name=functionName, iface=iface))
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47 iface_dict[functionName] = handler
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48
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49 def call_method(self, name, out_sign, async_, args, kwargs):
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50 callback = kwargs.pop("callback", None)
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51 errback = kwargs.pop("errback", None)
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52 if async_:
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53 d = self._methods_cbs[name](*args, **kwargs)
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54 if callback is not None:
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55 d.addCallback(callback if out_sign else lambda dummy: callback())
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56 if errback is None:
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57 d.addErrback(lambda failure_: log.error(failure_))
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58 else:
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59 d.addErrback(errback)
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60 return d
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61 else:
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62 try:
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63 ret = self._methods_cbs[name](*args, **kwargs)
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64 except Exception as e:
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65 if errback is not None:
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66 errback(e)
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67 else:
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68 raise e
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69 else:
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70 if callback is None:
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71 return ret
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72 else:
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73 if out_sign:
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74 callback(ret)
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75 else:
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76 callback()
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77
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78 def send_signal(self, name, args, kwargs):
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79 try:
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80 cb = self._signals_cbs["plugin"][name]
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81 except KeyError:
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82 log.debug(u"ignoring signal {}: no callback registered".format(name))
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83 else:
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84 cb(*args, **kwargs)
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85
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86 def addMethod(self, name, int_suffix, in_sign, out_sign, method, async=False, doc={}):
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87 #FIXME: doc parameter is kept only temporary, the time to remove it from calls
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88 log.debug("Adding method [{}] to embedded bridge".format(name))
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89 self.register_method(name, method)
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90 setattr(self.__class__, name, lambda self_, *args, **kwargs: self.call_method(name, out_sign, async, args, kwargs))
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91
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92 def addSignal(self, name, int_suffix, signature, doc={}):
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93 setattr(self.__class__, name, lambda self_, *args, **kwargs: self.send_signal(name, args, kwargs))
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94
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95 ## signals ##
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96
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97 ##SIGNALS_PART##
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98 ## methods ##
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99
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100 ##METHODS_PART##
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101
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102 # we want the same instance for both core and frontend
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103 bridge = None
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104 def Bridge():
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105 global bridge
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106 if bridge is None:
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107 bridge = _Bridge()
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108 return bridge