Mercurial > libervia-backend

annotate sat_frontends/jp/cmd_debug.py @ 2854:eb9fa72eb62b

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core: added a "_debug" signal: this signal is a generic debugging signal which can be implemented in frontends to do specific actions, like printing data dumps.
author Goffi <goffi@goffi.org>
date Sun, 10 Mar 2019 18:04:01 +0100
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 # jp: a SàT command line tool
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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
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21 import base
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22 from sat.core.i18n import _
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23 from sat_frontends.jp.constants import Const as C
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24 from sat.tools.common.ansi import ANSI as A
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25 import json
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26
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27 __commands__ = ["Debug"]
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28
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29
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30 class BridgeCommon(object):
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31 def evalArgs(self):
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32 if self.args.arg:
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33 try:
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34 return eval(u"[{}]".format(u",".join(self.args.arg)))
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35 except SyntaxError as e:
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36 self.disp(
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37 u"Can't evaluate arguments: {mess}\n{text}\n{offset}^".format(
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38 mess=e, text=e.text.decode("utf-8"), offset=u" " * (e.offset - 1)
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39 ),
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40 error=True,
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41 )
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42 self.host.quit(C.EXIT_BAD_ARG)
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43 else:
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44 return []
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45
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46
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47 class Method(base.CommandBase, BridgeCommon):
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48 def __init__(self, host):
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49 base.CommandBase.__init__(self, host, "method", help=_(u"call a bridge method"))
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50 BridgeCommon.__init__(self)
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51 self.need_loop = True
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52
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53 def add_parser_options(self):
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54 self.parser.add_argument(
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55 "method", type=str, help=_(u"name of the method to execute")
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56 )
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57 self.parser.add_argument(
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58 "arg", type=base.unicode_decoder, nargs="*", help=_(u"argument of the method")
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59 )
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60
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61 def method_cb(self, ret=None):
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62 if ret is not None:
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63 self.disp(unicode(ret))
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64 self.host.quit()
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65
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66 def method_eb(self, failure):
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67 self.disp(
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68 _(u"Error while executing {}: {}".format(self.args.method, failure)),
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69 error=True,
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70 )
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71 self.host.quit(C.EXIT_ERROR)
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72
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73 def start(self):
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74 method = getattr(self.host.bridge, self.args.method)
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75 args = self.evalArgs()
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76 try:
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77 method(
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78 *args,
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79 profile=self.profile,
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80 callback=self.method_cb,
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81 errback=self.method_eb
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82 )
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83 except TypeError:
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84 # maybe the method doesn't need a profile ?
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85 try:
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86 method(*args, callback=self.method_cb, errback=self.method_eb)
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87 except TypeError:
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88 self.method_eb(_(u"bad arguments"))
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89
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90
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91 class Signal(base.CommandBase, BridgeCommon):
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92 def __init__(self, host):
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93 base.CommandBase.__init__(
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94 self, host, "signal", help=_(u"send a fake signal from backend")
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95 )
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96 BridgeCommon.__init__(self)
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97
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98 def add_parser_options(self):
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99 self.parser.add_argument(
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100 "signal", type=str, help=_(u"name of the signal to send")
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101 )
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102 self.parser.add_argument(
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103 "arg", type=base.unicode_decoder, nargs="*", help=_(u"argument of the signal")
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104 )
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105
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106 def start(self):
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107 args = self.evalArgs()
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108 json_args = json.dumps(args)
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109 # XXX: we use self.args.profile and not self.profile
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110 # because we want the raw profile_key (so plugin handle C.PROF_KEY_NONE)
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111 self.host.bridge.debugFakeSignal(self.args.signal, json_args, self.args.profile)
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112
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113
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114 class Bridge(base.CommandBase):
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115 subcommands = (Method, Signal)
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116
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117 def __init__(self, host):
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118 super(Bridge, self).__init__(
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119 host, "bridge", use_profile=False, help=_("bridge s(t)imulation")
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120 )
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121
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122
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123 class Monitor(base.CommandBase):
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124 def __init__(self, host):
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125 super(Monitor, self).__init__(
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126 host,
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127 "monitor",
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128 use_verbose=True,
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129 use_profile=False,
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130 use_output=C.OUTPUT_XML,
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131 help=_("monitor XML stream"),
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132 )
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133 self.need_loop = True
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134
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135 def add_parser_options(self):
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136 self.parser.add_argument(
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137 "-d",
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138 "--direction",
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139 choices=("in", "out", "both"),
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140 default="both",
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141 help=_(u"stream direction filter"),
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142 )
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143
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144 def printXML(self, direction, xml_data, profile):
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145 if self.args.direction == "in" and direction != "IN":
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146 return
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147 if self.args.direction == "out" and direction != "OUT":
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148 return
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149 verbosity = self.host.verbosity
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150 if not xml_data.strip():
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151 if verbosity <= 2:
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152 return
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153 whiteping = True
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154 else:
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155 whiteping = False
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156
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157 if verbosity:
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158 profile_disp = u" ({})".format(profile) if verbosity > 1 else u""
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159 if direction == "IN":
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160 self.disp(
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161 A.color(
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162 A.BOLD, A.FG_YELLOW, "<<<===== IN ====", A.FG_WHITE, profile_disp
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163 )
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164 )
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165 else:
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166 self.disp(
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167 A.color(
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168 A.BOLD, A.FG_CYAN, "==== OUT ====>>>", A.FG_WHITE, profile_disp
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169 )
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170 )
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171 if whiteping:
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172 self.disp("[WHITESPACE PING]")
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173 else:
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174 try:
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175 self.output(xml_data)
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176 except Exception:
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177 #  initial stream is not valid XML,
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178 # in this case we print directly to data
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179 #  FIXME: we should test directly lxml.etree.XMLSyntaxError
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180 # but importing lxml directly here is not clean
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181 # should be wrapped in a custom Exception
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182 self.disp(xml_data)
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183 self.disp(u"")
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184
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185 def start(self):
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186 self.host.bridge.register_signal("xmlLog", self.printXML, "plugin")
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187
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188
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189 class Debug(base.CommandBase):
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190 subcommands = (Bridge, Monitor)
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191
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192 def __init__(self, host):
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193 super(Debug, self).__init__(
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194 host, "debug", use_profile=False, help=_("debugging tools")
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195 )