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annotate src/browser/sat_browser/json.py @ 845:a5b5178ef6b9

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browser (json): display a warning when connection with server is lost, and count down until the next try
author Goffi <goffi@goffi.org>
date Fri, 15 Jan 2016 15:42:37 +0100
parents 83a40d786e7a
children c1907a460f6a
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # Libervia: a Salut à Toi frontend
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5 # Copyright (C) 2011-2016 Jérôme Poisson <goffi@goffi.org>
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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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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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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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20
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21 ### logging configuration ###
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22 from sat.core.log import getLogger
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23 log = getLogger(__name__)
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24 ###
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25
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26 from pyjamas.Timer import Timer
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27 from pyjamas import Window
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28 from pyjamas import JSONService
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29 import time
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30 from sat_browser import main_panel
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31
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32 from sat_browser.constants import Const as C
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33
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34
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35 class LiberviaMethodProxy(object):
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36 """This class manage calling for one method"""
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37
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38 def __init__(self, parent, method):
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39 self._parent = parent
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40 self._method = method
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41
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42 def call(self, *args, **kwargs):
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43 """Method called when self._method attribue is used in JSON_PROXY_PARENT
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44
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45 This method manage callback/errback in kwargs, and profile(_key) removing
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46 @param *args: positional arguments of self._method
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47 @param **kwargs: keyword arguments of self._method
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48 """
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49 callback=kwargs.pop('callback', None)
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50 errback=kwargs.pop('errback', None)
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51
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52 # as profile is linked to browser session and managed server side, we remove them
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53 profile_removed = False
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54 try:
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55 kwargs['profile'] # FIXME: workaround for pyjamas bug: KeyError is not raised with del
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56 del kwargs['profile']
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57 profile_removed = True
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58 except KeyError:
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59 pass
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61 try:
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62 kwargs['profile_key'] # FIXME: workaround for pyjamas bug: KeyError is not raised iwith del
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63 del kwargs['profile_key']
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64 profile_removed = True
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65 except KeyError:
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66 pass
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67
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68 if not profile_removed and args:
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69 # if profile was not in kwargs, there is most probably one in args
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70 args = list(args)
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71 assert isinstance(args[-1], basestring) # Detect when we want to remove a callback (or something else) instead of the profile
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72 del args[-1]
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73
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74 if kwargs:
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75 # kwargs should be empty here, we don't manage keyword arguments on bridge calls
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76 log.error(u"kwargs is not empty after treatment on method call: kwargs={}".format(kwargs))
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78 id_ = self._parent.callMethod(self._method, args)
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79
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80 # callback or errback are managed in parent LiberviaJsonProxy with call id
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81 if callback is not None:
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82 self._parent.cb[id_] = callback
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83 if errback is not None:
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84 self._parent.eb[id_] = errback
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87 class LiberviaJsonProxy(JSONService.JSONService):
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88
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89 def __init__(self, url, methods):
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90 self._serviceURL = url
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91 self.methods = methods
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92 JSONService.JSONService.__init__(self, url, self)
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93 self.cb = {}
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94 self.eb = {}
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95 self._registerMethods(methods)
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96
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97 def _registerMethods(self, methods):
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98 if methods:
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99 for method in methods:
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100 log.debug(u"Registering JSON method call [{}]".format(method))
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101 setattr(self,
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102 method,
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103 getattr(LiberviaMethodProxy(self, method), 'call')
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104 )
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105
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106 def callMethod(self, method, params, handler = None):
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107 ret = super(LiberviaJsonProxy, self).callMethod(method, params, handler)
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108 return ret
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110 def call(self, method, cb, *args):
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111 # FIXME: deprecated call method, must be removed once it's not used anymore
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112 id_ = self.callMethod(method, args)
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113 log.debug(u"call: method={} [id={}], args={}".format(method, id_, args))
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114 if cb:
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115 if isinstance(cb, tuple):
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116 if len(cb) != 2:
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117 log.error("tuple syntax for bridge.call is (callback, errback), aborting")
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118 return
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119 if cb[0] is not None:
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120 self.cb[id_] = cb[0]
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121 self.eb[id_] = cb[1]
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122 else:
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123 self.cb[id_] = cb
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124
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125 def onRemoteResponse(self, response, request_info):
589
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126 try:
132
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127 _cb = self.cb[request_info.id]
589
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128 except KeyError:
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129 pass
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130 else:
203
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131 _cb(response)
33
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132 del self.cb[request_info.id]
589
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133
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134 try:
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135 del self.eb[request_info.id]
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136 except KeyError:
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137 pass
226
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diff changeset
138
0
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139 def onRemoteError(self, code, errobj, request_info):
62
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140 """def dump(obj):
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141 print "\n\nDUMPING %s\n\n" % obj
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142 for i in dir(obj):
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143 print "%s: %s" % (i, getattr(obj,i))"""
589
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144 try:
203
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145 _eb = self.eb[request_info.id]
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146 except KeyError:
203
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147 if code != 0:
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148 log.error("Internal server error")
203
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149 """for o in code, error, request_info:
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150 dump(o)"""
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151 else:
226
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152 if isinstance(errobj['message'], dict):
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153 log.error(u"Error %s: %s" % (errobj['message']['faultCode'], errobj['message']['faultString']))
203
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154 else:
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155 log.error(u"%s" % errobj['message'])
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156 else:
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157 _eb((code, errobj))
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158 del self.eb[request_info.id]
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159
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160 try:
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161 del self.cb[request_info.id]
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162 except KeyError:
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163 pass
239
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164
0
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165
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166 class RegisterCall(LiberviaJsonProxy):
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167 def __init__(self):
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168 LiberviaJsonProxy.__init__(self, "/register_api",
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169 ["isRegistered", "isConnected", "asyncConnect", "registerParams", "getMenus"])
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170
239
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171
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172 class BridgeCall(LiberviaJsonProxy):
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173 def __init__(self):
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174 LiberviaJsonProxy.__init__(self, "/json_api",
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175 ["getContacts", "addContact", "sendMessage",
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176 "psDeleteNode", "psRetractItem", "psRetractItems",
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177 "mbSend", "mbRetract", "mbGet", "mbGetFromMany", "mbGetFromManyRTResult",
716
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178 "mbGetFromManyWithComments", "mbGetFromManyWithCommentsRTResult",
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179 "getHistory", "getPresenceStatuses", "joinMUC", "mucLeave", "getRoomsJoined",
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180 "getRoomsSubjects", "inviteMUC", "launchTarotGame", "getTarotCardsPaths", "tarotGameReady",
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181 "tarotGamePlayCards", "launchRadioCollective",
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182 "getWaitingSub", "subscription", "delContact", "updateContact", "getCard",
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183 "getEntityData", "getParamsUI", "asyncGetParamA", "setParam", "launchAction",
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184 "disconnect", "chatStateComposing", "getNewAccountDomain", "confirmationAnswer",
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185 "syntaxConvert", "getAccountDialogUI", "getMainResource", "getWaitingConf", "getEntitiesData",
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186 "getVersion", "getLiberviaVersion", "getDefaultMUC", "getFeatures",
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187 ])
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188
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189 def __call__(self, *args, **kwargs):
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190 return LiberviaJsonProxy.__call__(self, *args, **kwargs)
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191
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192 def getConfig(self, dummy1, dummy2): # FIXME
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193 log.warning("getConfig is not implemeted in Libervia yet")
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194 return ''
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195
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196 def isConnected(self, dummy): # FIXME
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197 log.warning("isConnected is not implemeted in Libervia as for now profile is connected if session is opened")
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198 return True
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199
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200 def getAvatarFile(self, hash_, callback=None):
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201 log.warning("getAvatarFile only return hash in Libervia")
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202 if callback is not None:
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203 callback(hash_)
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204 return hash_
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205
242
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206
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207 class BridgeSignals(LiberviaJsonProxy):
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208
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209 def __init__(self, host):
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210 self.host = host
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211 self.retry_time = None
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212 self.retry_nb = 0
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213 self.retry_warning = None
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214 self.retry_timer = None
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215 LiberviaJsonProxy.__init__(self, "/json_signal_api",
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216 ["getSignals"])
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217 self._signals = {} # key: signal name, value: callback
210
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218
157
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219 def onRemoteResponse(self, response, request_info):
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220 if self.retry_time:
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221 log.info("Connection with server restablished")
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222 self.retry_nb = 0
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223 self.retry_time = None
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224 LiberviaJsonProxy.onRemoteResponse(self, response, request_info)
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diff changeset
225
99
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226 def onRemoteError(self, code, errobj, request_info):
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227 if errobj['message'] == 'Empty Response':
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228 log.warning(u"Empty reponse bridgeSignal\ncode={}\nrequest_info: id={} method={} handler={}".format(code, request_info.id, request_info.method, request_info.handler))
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229 # FIXME: to check/replace by a proper session end on disconnected signal
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230 # Window.getLocation().reload() # XXX: reset page in case of session ended.
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231 # FIXME: Should be done more properly without hard reload
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232 LiberviaJsonProxy.onRemoteError(self, code, errobj, request_info)
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233 #we now try to reconnect
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234 if isinstance(errobj['message'], dict) and errobj['message']['faultCode'] == 0:
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235 Window.alert('You are not allowed to connect to server')
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236 else:
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237 def _timerCb(dummy):
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238 current = time.time()
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239 if current > self.retry_time:
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240 msg = "Trying to reconnect to server..."
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241 log.info(msg)
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242 self.retry_warning.showWarning("INFO", msg)
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243 self.retry_timer.cancel()
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244 self.retry_warning = self.retry_timer = None
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245 self.getSignals(callback=self.signalHandler, profile=None)
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246 else:
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247 remaining = int(self.retry_time - current)
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248 msg_html = u"Connection with server lost. Retrying in <strong>{}</strong> s".format(remaining)
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249 self.retry_warning.showWarning("WARNING", msg_html, None)
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250
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251 retry_delay = 2**self.retry_nb
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252 self.retry_nb += 1
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253 log.warning(u"Lost connection, trying to reconnect in {} s".format(retry_delay))
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254 self.retry_time = time.time() + retry_delay
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255 self.retry_warning = main_panel.WarningPopup()
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256 self.retry_timer = Timer(notify=_timerCb)
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257 self.retry_timer.scheduleRepeating(1000)
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258 _timerCb(None)
2
669c531a857e signals handling and first draft of microblogging
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parents: 1
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259
589
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260 def register(self, name, callback, with_profile=True):
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261 """Register a signal
226
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262
589
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263 @param: name of the signal to register
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264 @param callback: method to call
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265 @param with_profile: True if the original bridge method need a profile
267
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266 """
694
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parents: 692
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267 log.debug(u"Registering signal {}".format(name))
589
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parents: 584
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268 if name in self._signals:
694
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parents: 692
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269 log.error(u"Trying to register and already registered signal ({})".format(name))
267
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270 else:
589
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271 self._signals[name] = (callback, with_profile)
426
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diff changeset
272
589
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273 def signalHandler(self, signal_data):
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274 self.getSignals(callback=self.signalHandler, profile=None)
548
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275 if len(signal_data) == 1:
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276 signal_data.append([])
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277 log.debug(u"Got signal ==> name: %s, params: %s" % (signal_data[0], signal_data[1]))
226
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278 name, args = signal_data
589
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279 try:
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280 callback, with_profile = self._signals[name]
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281 except KeyError:
694
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parents: 692
diff changeset
282 log.warning(u"Ignoring {} signal: no handler registered !".format(name))
205
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Goffi <goffi@goffi.org>
parents: 204
diff changeset
283 return
589
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284 if with_profile:
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diff changeset
285 args.append(C.PROF_KEY_NONE)
700
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parents: 697
diff changeset
286 if not self.host._profile_plugged:
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parents: 697
diff changeset
287 log.debug("Profile is not plugged, we cache the signal")
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parents: 697
diff changeset
288 self.host.signals_cache[C.PROF_KEY_NONE].append((name, callback, args, {}))
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289 else:
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diff changeset
290 callback(*args)