Mercurial > libervia-backend

annotate sat/bridge/bridge_constructor/constructors/embedded/embedded_template.py @ 3200:5c3bf37f2202

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tools (images): max_size can now be manually specified in checkImage and dest in resizeImage: `context` has been removed as it is not used and doesn't seem that useful.
author Goffi <goffi@goffi.org>
date Sun, 01 Mar 2020 18:47:05 +0100
parents 559a625a236b
children be6d91572633
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python3
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2
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3
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4 # SàT: a XMPP client
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5 # Copyright (C) 2009-2020 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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25
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26 class _Bridge(object):
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27 def __init__(self):
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28 log.debug("Init embedded bridge...")
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29 self._methods_cbs = {}
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30 self._signals_cbs = {"core": {}, "plugin": {}}
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31
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32 def bridgeConnect(self, callback, errback):
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33 callback()
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34
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35 def register_method(self, name, callback):
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36 log.debug("registering embedded bridge method [{}]".format(name))
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37 if name in self._methods_cbs:
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38 raise exceptions.ConflictError("method {} is already regitered".format(name))
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39 self._methods_cbs[name] = callback
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40
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41 def register_signal(self, functionName, handler, iface="core"):
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42 iface_dict = self._signals_cbs[iface]
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43 if functionName in iface_dict:
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44 raise exceptions.ConflictError(
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45 "signal {name} is already regitered for interface {iface}".format(
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46 name=functionName, iface=iface
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47 )
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48 )
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49 iface_dict[functionName] = handler
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50
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51 def call_method(self, name, out_sign, async_, args, kwargs):
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52 callback = kwargs.pop("callback", None)
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53 errback = kwargs.pop("errback", None)
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54 if async_:
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55 d = self._methods_cbs[name](*args, **kwargs)
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56 if callback is not None:
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57 d.addCallback(callback if out_sign else lambda __: callback())
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58 if errback is None:
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59 d.addErrback(lambda failure_: log.error(failure_))
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60 else:
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61 d.addErrback(errback)
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62 return d
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63 else:
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64 try:
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65 ret = self._methods_cbs[name](*args, **kwargs)
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66 except Exception as e:
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67 if errback is not None:
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68 errback(e)
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69 else:
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70 raise e
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71 else:
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72 if callback is None:
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73 return ret
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74 else:
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75 if out_sign:
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76 callback(ret)
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77 else:
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78 callback()
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79
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80 def send_signal(self, name, args, kwargs):
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81 try:
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82 cb = self._signals_cbs["plugin"][name]
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83 except KeyError:
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84 log.debug("ignoring signal {}: no callback registered".format(name))
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85 else:
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86 cb(*args, **kwargs)
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87
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88 def addMethod(self, name, int_suffix, in_sign, out_sign, method, async_=False, doc={}):
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89 # FIXME: doc parameter is kept only temporary, the time to remove it from calls
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90 log.debug("Adding method [{}] to embedded bridge".format(name))
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91 self.register_method(name, method)
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92 setattr(
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93 self.__class__,
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94 name,
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95 lambda self_, *args, **kwargs: self.call_method(
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96 name, out_sign, async_, args, kwargs
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97 ),
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98 )
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99
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100 def addSignal(self, name, int_suffix, signature, doc={}):
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101 setattr(
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102 self.__class__,
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103 name,
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104 lambda self_, *args, **kwargs: self.send_signal(name, args, kwargs),
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105 )
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106
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107 ## signals ##
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108
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109
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110 ##SIGNALS_PART##
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111 ## methods ##
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112
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113 ##METHODS_PART##
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114
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115 # we want the same instance for both core and frontend
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116 bridge = None
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117
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118
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119 def Bridge():
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120 global bridge
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121 if bridge is None:
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122 bridge = _Bridge()
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123 return bridge