Mercurial > libervia-backend
annotate sat/bridge/bridge_constructor/constructors/dbus/constructor.py @ 3198:08151c103636
core (memory/cache): added some metadata:
- creation/last_access are now set
- use filename to guess MIME type when suitable
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 01 Mar 2020 18:31:45 +0100 |
| parents | 559a625a236b |
| children | be6d91572633 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
| 2085 | 3 |
| 4 # SàT: a XMPP client | |
| 3136 | 5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org) |
| 2085 | 6 |
| 7 # This program is free software: you can redistribute it and/or modify | |
| 8 # it under the terms of the GNU Affero General Public License as published by | |
| 9 # the Free Software Foundation, either version 3 of the License, or | |
| 10 # (at your option) any later version. | |
| 11 | |
| 12 # This program is distributed in the hope that it will be useful, | |
| 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 # GNU Affero General Public License for more details. | |
| 16 | |
| 17 # You should have received a copy of the GNU Affero General Public License | |
| 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 from sat.bridge.bridge_constructor import base_constructor | |
| 21 | |
| 22 | |
| 23 class DbusConstructor(base_constructor.Constructor): | |
| 24 NAME = "dbus" | |
| 25 CORE_TEMPLATE = "dbus_core_template.py" | |
| 2086 | 26 CORE_DEST = "dbus_bridge.py" |
| 2085 | 27 CORE_FORMATS = { |
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28 "signals": """\ |
| 2085 | 29 @dbus.service.signal(const_INT_PREFIX+const_{category}_SUFFIX, |
| 30 signature='{sig_in}') | |
| 31 def {name}(self, {args}): | |
| 32 {body}\n""", | |
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33 "methods": """\ |
| 2085 | 34 @dbus.service.method(const_INT_PREFIX+const_{category}_SUFFIX, |
| 35 in_signature='{sig_in}', out_signature='{sig_out}', | |
| 36 async_callbacks={async_callbacks}) | |
| 37 def {name}(self, {args}{async_comma}{async_args_def}): | |
| 38 {debug}return self._callback("{name}", {args_result}{async_comma}{async_args_call})\n""", | |
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39 "signal_direct_calls": """\ |
| 2085 | 40 def {name}(self, {args}): |
| 41 self.dbus_bridge.{name}({args})\n""", | |
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42 } |
| 2085 | 43 |
| 44 FRONTEND_TEMPLATE = "dbus_frontend_template.py" | |
| 45 FRONTEND_DEST = CORE_DEST | |
| 46 FRONTEND_FORMATS = { | |
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47 "methods": """\ |
| 2085 | 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 "async_methods": """\ |
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51 def {name}(self{async_comma}{args}): |
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52 loop = asyncio.get_running_loop() |
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53 fut = loop.create_future() |
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54 reply_handler = lambda ret=None: loop.call_soon_threadsafe(fut.set_result, ret) |
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55 error_handler = lambda err: loop.call_soon_threadsafe(fut.set_exception, dbus_to_bridge_exception(err)) |
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56 self.db_{category}_iface.{name}({args_result}{async_comma}timeout=const_TIMEOUT, reply_handler=reply_handler, error_handler=error_handler) |
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57 {debug}return fut\n""", |
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58 } |
| 2085 | 59 |
| 60 def core_completion_signal(self, completion, function, default, arg_doc, async_): | |
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61 completion["category"] = completion["category"].upper() |
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62 completion["body"] = ( |
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63 "pass" |
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64 if not self.args.debug |
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65 else 'log.debug ("{}")'.format(completion["name"]) |
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66 ) |
| 2085 | 67 |
| 68 def core_completion_method(self, completion, function, default, arg_doc, async_): | |
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69 completion.update( |
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70 { |
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71 "debug": "" |
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72 if not self.args.debug |
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73 else 'log.debug ("%s")\n%s' % (completion["name"], 8 * " "), |
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74 "args_result": self.getArguments( |
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75 function["sig_in"], name=arg_doc, unicode_protect=self.args.unicode |
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76 ), |
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77 "async_comma": ", " if async_ and function["sig_in"] else "", |
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78 "async_args_def": "callback=None, errback=None" if async_ else "", |
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79 "async_args_call": "callback=callback, errback=errback" if async_ else "", |
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80 "async_callbacks": "('callback', 'errback')" if async_ else "None", |
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81 "category": completion["category"].upper(), |
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82 } |
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83 ) |
| 2085 | 84 |
| 85 def frontend_completion_method(self, completion, function, default, arg_doc, async_): | |
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86 completion.update( |
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87 { |
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88 # 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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89 "debug": "" |
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90 if not self.args.debug |
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91 else 'log.debug ("%s")\n%s' % (completion["name"], 8 * " "), |
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92 "args_result": self.getArguments(function["sig_in"], name=arg_doc), |
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93 "async_args": "callback=None, errback=None", |
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94 "async_comma": ", " if function["sig_in"] else "", |
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95 "error_handler": """if callback is None: |
| 2085 | 96 error_handler = None |
| 97 else: | |
| 98 if errback is None: | |
| 99 errback = log.error | |
| 100 error_handler = lambda err:errback(dbus_to_bridge_exception(err)) | |
| 101 """, | |
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102 } |
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103 ) |
| 2085 | 104 if async_: |
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105 completion["blocking_call"] = "" |
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106 completion[ |
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107 "async_args_result" |
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108 ] = "timeout=const_TIMEOUT, reply_handler=callback, error_handler=error_handler" |
| 2085 | 109 else: |
| 110 # 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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111 completion[ |
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112 "blocking_call" |
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113 ] = """kwargs={} |
| 2085 | 114 if callback is not None: |
| 115 kwargs['timeout'] = const_TIMEOUT | |
| 116 kwargs['reply_handler'] = callback | |
| 117 kwargs['error_handler'] = error_handler | |
| 118 """ | |
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119 completion["async_args_result"] = "**kwargs" |
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120 result = ( |
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121 "self.db_%(category)s_iface.%(name)s(%(args_result)s%(async_comma)s%(async_args_result)s)" |
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122 % completion |
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123 ) |
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124 completion["result"] = ( |
| 3028 | 125 "str(%s)" if self.args.unicode and function["sig_out"] == "s" else "%s" |
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126 ) % result |