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annotate sat_frontends/jp/cmd_application.py @ 3374:47755614b82a

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jp (application): new `application` (or `app`) commands: those commands allow to: - list available SàT applications - start an application - stop an application - display/get exposed values
author Goffi <goffi@goffi.org>
date Mon, 28 Sep 2020 21:10:33 +0200
parents
children 297389b1563c
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3374
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1 #!/usr/bin/env python3
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2
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3 # jp: a SàT command line tool
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4 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 from . import base
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20 from sat.core.i18n import _
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21 from sat.tools.common import data_format
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22 from sat_frontends.jp.constants import Const as C
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23
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24 __commands__ = ["Application"]
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25
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26
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27 class List(base.CommandBase):
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28 """List available applications"""
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29
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30 def __init__(self, host):
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31 super(List, self).__init__(
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32 host, "list", use_profile=False, use_output=C.OUTPUT_LIST,
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33 help=_("list available applications")
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34 )
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35
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36 def add_parser_options(self):
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37 self.parser.add_argument(
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38 "-f",
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39 "--filters",
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40 action="extend",
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41 nargs="+",
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42 choices=["available", "running"],
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43 default=["available"],
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44 help=_("show applications with this status"),
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45 )
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46
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47 async def start(self):
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48 try:
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49 found_apps = await self.host.bridge.applicationsList(self.args.filters)
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50 except Exception as e:
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51 self.disp(f"can't get applications list: {e}", error=True)
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52 self.host.quit(C.EXIT_BRIDGE_ERRBACK)
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53 else:
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54 await self.output(found_apps)
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55 self.host.quit()
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56
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57
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58 class Start(base.CommandBase):
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59 """Start an application"""
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60
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61 def __init__(self, host):
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62 super(Start, self).__init__(
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63 host, "start", use_profile=False, help=_("start an application")
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64 )
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65
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66 def add_parser_options(self):
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67 self.parser.add_argument(
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68 "name",
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69 help=_("name of the application to start"),
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70 )
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71
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72 async def start(self):
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73 try:
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74 await self.host.bridge.applicationStart(
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75 self.args.name,
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76 "",
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77 )
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78 except Exception as e:
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79 self.disp(f"can't start {self.args.name}: {e}", error=True)
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80 self.host.quit(C.EXIT_BRIDGE_ERRBACK)
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81 else:
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82 self.host.quit()
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83
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84
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85 class Stop(base.CommandBase):
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86
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87 def __init__(self, host):
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88 super(Stop, self).__init__(
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89 host, "stop", use_profile=False, help=_("stop a running application")
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90 )
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91
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92 def add_parser_options(self):
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93 id_group = self.parser.add_mutually_exclusive_group(required=True)
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94 id_group.add_argument(
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95 "name",
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96 nargs="?",
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97 help=_("name of the application to stop"),
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98 )
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99 id_group.add_argument(
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100 "-i",
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101 "--id",
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102 help=_("identifier of the instance to stop"),
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103 )
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104
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105 async def start(self):
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106 try:
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107 if self.args.name is not None:
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108 args = [self.args.name, "name"]
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109 else:
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110 args = [self.args.id, "instance"]
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111 await self.host.bridge.applicationStop(
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112 *args,
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113 "",
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114 )
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115 except Exception as e:
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116 if self.args.name is not None:
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117 self.disp(
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118 f"can't stop application {self.args.name!r}: {e}", error=True)
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119 else:
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120 self.disp(
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121 f"can't stop application instance with id {self.args.id!r}: {e}",
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122 error=True)
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123 self.host.quit(C.EXIT_BRIDGE_ERRBACK)
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124 else:
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125 self.host.quit()
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126
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127
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128 class Exposed(base.CommandBase):
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129
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130 def __init__(self, host):
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131 super(Exposed, self).__init__(
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132 host, "exposed", use_profile=False, use_output=C.OUTPUT_DICT,
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133 help=_("show data exposed by a running application")
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134 )
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135
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136 def add_parser_options(self):
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137 id_group = self.parser.add_mutually_exclusive_group(required=True)
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138 id_group.add_argument(
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139 "name",
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140 nargs="?",
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141 help=_("name of the application to stop"),
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142 )
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143 id_group.add_argument(
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144 "-i",
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145 "--id",
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146 help=_("identifier of the instance to stop"),
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147 )
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148
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149 async def start(self):
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150 try:
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151 if self.args.name is not None:
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152 args = [self.args.name, "name"]
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153 else:
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154 args = [self.args.id, "instance"]
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155 exposed_data_raw = await self.host.bridge.applicationExposedGet(
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156 *args,
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157 "",
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158 )
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159 except Exception as e:
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160 if self.args.name is not None:
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161 self.disp(
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162 f"can't get values exposed from application {self.args.name!r}: {e}",
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163 error=True)
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164 else:
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165 self.disp(
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166 f"can't values exposed from application instance with id {self.args.id!r}: {e}",
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167 error=True)
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168 self.host.quit(C.EXIT_BRIDGE_ERRBACK)
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169 else:
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170 exposed_data = data_format.deserialise(exposed_data_raw)
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171 await self.output(exposed_data)
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172 self.host.quit()
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173
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174
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175 class Application(base.CommandBase):
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176 subcommands = (List, Start, Stop, Exposed)
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177
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178 def __init__(self, host):
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179 super(Application, self).__init__(
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180 host, "application", use_profile=False, help=_("manage applications"),
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181 aliases=['app'],
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182 )