Mercurial > libervia-backend

annotate sat/bridge/bridge_constructor/constructors/dbus/constructor.py @ 2972:d1e4e702aa82

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Added tag 0.7.0b3 for changeset dbf24ba40396
author Goffi <goffi@goffi.org>
date Thu, 27 Jun 2019 20:28:10 +0200
parents 003b8b4b56a7
children ab2696e34d29
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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) 2009-2019 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.bridge.bridge_constructor import base_constructor
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21
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22
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23 class DbusConstructor(base_constructor.Constructor):
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24 NAME = "dbus"
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25 CORE_TEMPLATE = "dbus_core_template.py"
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26 CORE_DEST = "dbus_bridge.py"
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27 CORE_FORMATS = {
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28 "signals": """\
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29 @dbus.service.signal(const_INT_PREFIX+const_{category}_SUFFIX,
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30 signature='{sig_in}')
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31 def {name}(self, {args}):
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32 {body}\n""",
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33 "methods": """\
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34 @dbus.service.method(const_INT_PREFIX+const_{category}_SUFFIX,
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35 in_signature='{sig_in}', out_signature='{sig_out}',
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36 async_callbacks={async_callbacks})
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37 def {name}(self, {args}{async_comma}{async_args_def}):
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38 {debug}return self._callback("{name}", {args_result}{async_comma}{async_args_call})\n""",
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39 "signal_direct_calls": """\
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40 def {name}(self, {args}):
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41 self.dbus_bridge.{name}({args})\n""",
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42 }
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43
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44 FRONTEND_TEMPLATE = "dbus_frontend_template.py"
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45 FRONTEND_DEST = CORE_DEST
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46 FRONTEND_FORMATS = {
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47 "methods": """\
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48 def {name}(self, {args}{async_comma}{async_args}):
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49 {error_handler}{blocking_call}{debug}return {result}\n"""
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50 }
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51
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52 def core_completion_signal(self, completion, function, default, arg_doc, async_):
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53 completion["category"] = completion["category"].upper()
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54 completion["body"] = (
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55 "pass"
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56 if not self.args.debug
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57 else 'log.debug ("{}")'.format(completion["name"])
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58 )
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59
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60 def core_completion_method(self, completion, function, default, arg_doc, async_):
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61 completion.update(
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62 {
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63 "debug": ""
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64 if not self.args.debug
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65 else 'log.debug ("%s")\n%s' % (completion["name"], 8 * " "),
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66 "args_result": self.getArguments(
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67 function["sig_in"], name=arg_doc, unicode_protect=self.args.unicode
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68 ),
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69 "async_comma": ", " if async_ and function["sig_in"] else "",
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70 "async_args_def": "callback=None, errback=None" if async_ else "",
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71 "async_args_call": "callback=callback, errback=errback" if async_ else "",
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72 "async_callbacks": "('callback', 'errback')" if async_ else "None",
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73 "category": completion["category"].upper(),
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74 }
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75 )
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76
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77 def frontend_completion_method(self, completion, function, default, arg_doc, async_):
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78 completion.update(
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79 {
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80 # XXX: we can manage blocking call in the same way as async one: if callback is None the call will be blocking
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81 "debug": ""
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82 if not self.args.debug
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83 else 'log.debug ("%s")\n%s' % (completion["name"], 8 * " "),
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84 "args_result": self.getArguments(function["sig_in"], name=arg_doc),
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85 "async_args": "callback=None, errback=None",
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86 "async_comma": ", " if function["sig_in"] else "",
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87 "error_handler": """if callback is None:
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88 error_handler = None
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89 else:
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90 if errback is None:
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91 errback = log.error
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92 error_handler = lambda err:errback(dbus_to_bridge_exception(err))
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93 """,
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94 }
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95 )
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96 if async_:
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97 completion["blocking_call"] = ""
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98 completion[
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99 "async_args_result"
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100 ] = "timeout=const_TIMEOUT, reply_handler=callback, error_handler=error_handler"
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101 else:
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102 # XXX: To have a blocking call, we must have not reply_handler, so we test if callback exists, and add reply_handler only in this case
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103 completion[
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104 "blocking_call"
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105 ] = """kwargs={}
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106 if callback is not None:
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107 kwargs['timeout'] = const_TIMEOUT
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108 kwargs['reply_handler'] = callback
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109 kwargs['error_handler'] = error_handler
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110 """
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111 completion["async_args_result"] = "**kwargs"
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112 result = (
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113 "self.db_%(category)s_iface.%(name)s(%(args_result)s%(async_comma)s%(async_args_result)s)"
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114 % completion
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115 )
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116 completion["result"] = (
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117 "unicode(%s)" if self.args.unicode and function["sig_out"] == "s" else "%s"
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118 ) % result