annotate orpg/networking/meta_server_lib.py @ 212:13054be69834 beta

Traipse Beta 'OpenRPG' {100428-00} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc's main goal is to offer more advanced features and enhance the productivity of the user. Update Summary (Patch-2) New Features: New Namespace method with two new syntaxes New Namespace Internal is context sensitive, always! New Namespace External is 'as narrow as you make it' New Namespace FutureCheck helps ensure you don't receive an incorrect node New PluginDB access for URL2Link plugin New to Forms, they now show their content in Design Mode New to Update Manager, checks Repo for updates on software start Fixes: Fix to Server GUI startup errors Fix to Server GUI Rooms tab updating Fix to Chat and Settings if non existant die roller is picked Fix to Dieroller and .open() used with .vs(). Successes are correctly calculated Fix to Alias Lib's Export to Tree, Open, Save features Fix to alias node, now works properly Fix to Splitter node, minor GUI cleanup Fix to Backgrounds not loading through remote loader Fix to Node name errors Fix to rolling dice in chat Whispers Fix to Splitters Sizing issues Fix to URL2Link plugin, modified regex compilation should remove memory leak Fix to mapy.py, a roll back due to zoomed grid issues Fix to whiteboard_handler, Circles work by you clicking the center of the circle Fix to Servers parse_incoming_dom which was outdated and did not respect XML Fix to a broken link in the server welcome message Fix to InterParse and logger requiring traceback Fix to Update Manager Status Bar Fix to failed image and erroneous pop up
author sirebral
date Wed, 28 Apr 2010 08:08:09 -0500
parents dcae32e219f1
children 9230a33defd9
rev   line source
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1 #!/usr/bin/python2.1
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2 # Copyright (C) 2000-2001 The OpenRPG Project
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3 #
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4 # openrpg-dev@lists.sourceforge.net
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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 General Public License as published by
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8 # the Free Software Foundation; either version 2 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 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 General Public License
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17 # along with this program; if not, write to the Free Software
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18 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 # --
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20 #
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21 # File: meta_server_lib.py
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22 # Author: Chris Davis
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23 # Maintainer:
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24 # Version:
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25 # $Id: meta_server_lib.py,v Traipse 'Ornery-Orc' prof.ebral Exp $
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26 #
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27 # Description: A collection of functions to communicate with the meta server.
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28 #
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29
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30
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31 #added debug flag for meta messages to cut console server spam --Snowdog
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32 META_DEBUG = 0
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33
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34 __version__ = "$Id: meta_server_lib.py,v 1.40 2007/04/04 01:18:42 digitalxero Exp $"
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35
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36 from orpg.orpg_version import PROTOCOL_VERSION
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37 from orpg.orpgCore import component
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38 from orpg.tools.validate import validate
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39 from orpg.dirpath import dir_struct
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40
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41 import urllib, time, sys, traceback, re
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42
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43 from threading import *
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44 from random import uniform
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45 from urllib import urlopen, urlencode
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46 from orpg.tools.orpg_log import debug
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47
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48 from xml.etree.ElementTree import Element, fromstring
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49 metacache_lock = RLock()
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50
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51 def get_server_dom(data=None,path=None, string=False):
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52 # post data at server and get the resulting DOM
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53 if path == None:
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54 # get meta server URI
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55 path = getMetaServerBaseURL()
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56
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57 # POST the data
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58 if META_DEBUG:
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59 print
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60 print "Sending the following POST info to Meta at " + path + ":"
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61 print "=========================================="
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62 print data
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63 print
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64 file = urlopen(path, data)
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65 data = file.read()
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66 file.close()
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67
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68 # Remove any leading or trailing data. This can happen on some satellite connections
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69 p = re.compile('(<servers>.*?</servers>)',re.DOTALL|re.IGNORECASE)
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70 mo = p.search(data)
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71 if mo: data = mo.group(0)
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72
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73 if META_DEBUG:
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74 print
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75 print "Got this string from the Meta at " + path + ":"
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76 print "==============================================="
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77 print data
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78 print
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79 # build dom
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80 etreeEl = data
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81 if not string: return fromstring(etreeEl)
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82 else: return etreeEl
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83
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84 def post_server_data(name, realHostName=None):
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85 if realHostName: data = urlencode({"server_data[name]":name,
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86 "server_data[version]":PROTOCOL_VERSION,
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87 "act":"new",
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88 "REMOTE_ADDR": realHostName })
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89 # print "Letting meta server decide the hostname to list..."
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90 else: data = urlencode({"server_data[name]":name,
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91 "server_data[version]":PROTOCOL_VERSION,
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92 "act":"new"})
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93 path = component.get('settings').get('MetaServerBaseURL') #getMetaServerBaseURL()
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94 etreeEl = get_server_dom(data, path)
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95 return int(etreeEl.get('id'))
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96
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97 def post_failed_connection(id,meta=None,address=None,port=None):
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98 # For now, turning this off. This needs to be re-vamped for
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99 # handling multiple Metas.
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100 return 0
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101 #data = urlencode({"id":id,"act":"failed"});
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102 #xml_dom = get_server_dom(data)
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103 #ret_val = int(xml_dom.getAttribute("return"))
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104 #return ret_val
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105
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106 def remove_server(id):
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107 data = urlencode({"id":id,"act":"del"});
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108 etreeEl = get_server_dom(data)
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109 return int(etreeEl.get("return"))
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110
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111 def byStartAttribute(first, second):
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112 # This function is used to easily sort a list of nodes by their start time
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113 # Ensure there is something to sort with for each
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114
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115 first_start = int(first.get('start')) or 0
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116 second_start = int(second.get('start')) or 0
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117
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118 # Return the result of the cmp function on the two strings
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119 return cmp(first_start, second_start)
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120
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121 def byNameAttribute(first, second):
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122 # This function is used to easily sort a list of nodes by their name attribute
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123 # Ensure there is something to sort with for each
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124
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125 first_name = first.get('name') or ''
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126 second_name = second.get('name') or ''
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127
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128 # Return the result of the cmp function on the two strings
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129 return cmp(first_name,second_name)
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130
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131
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132 def get_server_list(versions = None, sort_by="start"):
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133 data = urlencode({"version":PROTOCOL_VERSION,"ports":"%"})
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134 all_metas = getMetaServers(versions, 1) # get the list of metas
0
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135 base_meta = getMetaServerBaseURL()
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136
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137 #all_metas.reverse() # The last one checked will take precedence, so reverse the order
135
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138 # so that the top one on the actual list is checked last
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139 return_hash = {} # this will end up with an amalgamated list of servers
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140
135
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141 for meta in all_metas: # check all of the metas
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142 #get the server's xml from the current meta
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143 bad_meta = 0
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144 #print "Getting server list from " + meta + "..."
135
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145 try: xml_dom = get_server_dom(data=data, path=meta)
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146 except: bad_meta = 1 #print "Trouble getting servers from " + meta + "..."
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147 if bad_meta: continue
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148 if base_meta == meta: updateMetaCache(xml_dom) #print "This is our base meta: " + meta
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149 node_list = xml_dom.findall('server')
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150 if len(node_list): # if there are entries in the node list
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151 # otherwise, just loop to next meta
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152
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153 # for each node found, we're going to check the nodes from prior
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154 # metas in the list. If a match is found, then use the new values.
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155 for n in node_list:
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156 # set them from current node
135
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157 if not n.get('name'): n.set('name','NO_NAME_GIVEN')
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158 name = n.get('name')
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159 if not n.get('num_users'): n.set('num_users','N/A')
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160 num_users = n.get('num_users')
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161 if not n.get('address'): n.set('address','NO_ADDRESS_GIVEN')
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162 address = n.get('address')
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163 if not n.get('port'): n.set('port','6774')
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164 port = n.get('port')
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165 n.set('meta',meta)
0
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166 end_point = str(address) + ":" + str(port)
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167 if return_hash.has_key(end_point):
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168 if META_DEBUG: print "Replacing duplicate server entry at " + end_point
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169 return_hash[end_point] = n
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170
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171 # At this point, we have an amalgamated list of servers
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172 # Now, we have to construct a new DOM to pass back.
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173
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174 # Create a servers element
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175 server_list = Element('servers')
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176
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177 # get the nodes stored in return_hash
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178 sort_list = return_hash.values()
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179
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180 # sort them by their name attribute. Uses byNameAttribute()
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181 # defined above as a comparison function
135
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182 if sort_by == "start": sort_list.sort(byStartAttribute)
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183 elif sort_by == "name": sort_list.sort(byNameAttribute)
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184
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185 # Add each node to the DOM
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186 for n in sort_list: server_list.append(n)
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187 return server_list
0
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188
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189 ## List Format:
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190 ## <servers>
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191 ## <server address=? id=? name=? failed_count=? >
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192 ## </servers>
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193
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194 def updateMetaCache(xml_dom):
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195 try:
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196 if META_DEBUG: print "Updating Meta Server Cache"
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197 metaservers = xml_dom.findall('metaservers') # pull out the metaservers bit
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198 if len(metaservers) == 0:
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199 cmetalist = getRawMetaList()
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200 xml_dom = get_server_dom(cmetalist[0])
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201 metaservers = xml_dom.findall('metaservers')
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202 authoritative = metaservers[0].get('auth')
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203 if META_DEBUG: print " Authoritive Meta: "+str(authoritative)
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204 metas = metaservers[0].findall("meta") # get the list of metas
0
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205 if META_DEBUG: print " Meta List ("+str(len(metas))+" servers)"
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206 try:
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207 metacache_lock.acquire()
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208 ini = open(dir_struct["user"]+"metaservers.cache","w")
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209 for meta in metas:
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210 if META_DEBUG: print " Writing: "+str(meta.get('path'))
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211 ini.write(str(meta.get('path')) + " " + str(meta.get('versions')) + "\n")
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212 ini.close()
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213 finally:
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214 metacache_lock.release()
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215 except Exception, e:
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216 if META_DEBUG: traceback.print_exc()
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217 print "Meta Server Lib: UpdateMetaCache(): " + str(e)
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218
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219 def getRawMetaList(path=None):
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220 ### Alpha ###
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221 """This code will allow for a list of metas to be created. Future developement will more integrate the list of metas"""
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222 if path != None:
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223 metas = []
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224 data = urlencode({"version":PROTOCOL_VERSION,"ports":"%"})
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225 xml_dom = get_server_dom(data, path)
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226 node_list = fromstring(xml_dom).findall('meta_server')
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227 if len(node_list):
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228 for n in node_list:
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229 metas.append(n.get('path'))
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230 return metas
0
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231 try:
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232 try:
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233 metacache_lock.acquire()
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234 # Read in the metas
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235 validate.config_file("metaservers.cache","metaservers.cache")
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236 ini = open(dir_struct["user"]+"metaservers.cache","r")
0
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237 metas = ini.readlines()
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238 ini.close()
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239 return metas
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240 finally:
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241 metacache_lock.release()
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242 except Exception, e:
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243 if META_DEBUG: traceback.print_exc()
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244 print "Meta Server Lib: getRawMetaList(): " + str(e)
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245 return []
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246
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247 def getMetaServers(versions = None, pick_random=0):
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248 """
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249 get meta server URLs as a list
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250 versions is a list of acceptable version numbers.
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251 A False truth value will use getMetaServerBaseURL()
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252 set a default if we have weird reading problems
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253 default_url = "http://www.openrpg.com/openrpg_servers.php"
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254 """
0
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255
135
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256 ### Pre Alpha Design ###
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257 """ Here is how to handle Multiple Meta servers, and probably the best way to do it. Create an XML file that contains nodes with the various servers. Users will grab that meta data and have the option to connect to multiple meta servers which will allow them to find all the rooms. A check box should be used so if one server faile the users can continue without much lag. When creating a server hosts will need to select a meta to go too. This should be in the final of Ornery Orc."""
0
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258 meta_names = []
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259 if(versions): # If versions are supplied, then look in metaservers.conf
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260 try:
100
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261 """
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262 read in the metas from file
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263 format of file is one meta entry per line
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264 each entry will be the meta url, followed by one or more version numbers that it
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265 handle. Generally, this will be either a 1 for the original Meta format, or
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266 2 for the new one.
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267 """
0
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268 # Read in the metas
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269 #Adding a path object will attempt to look for a meta_network.
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270 metas = getRawMetaList()
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271
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272 # go through each one to check if it should be returned, based on the
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273 # version numbers allowed.
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274 for meta in metas:
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275 # split the line on whitespace
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276 # obviously, your meta servers urls shouldn't contain whitespace. duh.
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277 words = meta.split()
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278 success = 0 # init success flag for version check
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279 for version in versions: # run through each allowed version from caller
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280 if version in words[1:]: # if the allowed version token was found
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281 success += 1 # then increment the success indicator
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282 if success: # if the meta entry is acceptable to the caller
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283 meta_names.append(words[0]) # add the entry
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284 if META_DEBUG: print "adding metaserver " + meta
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285
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286 # at this point, we should have at least one name from the cache. If not ...
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287 if not meta_names:
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288 default_meta = getMetaServerBaseURL() # grab the meta from ini.xml
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289 meta_names.append(default_meta) # add it to the return list
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290 # print "Warning!!\nNo valid metaservers cached."
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291 # print "Using meta from MetaServerBaseURL: " + default_meta + "\n"
0
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292 # if we have more than one and want a random one
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293 elif pick_random:
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294 if META_DEBUG: print "choosing random meta from: " + str(meta_names)
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295 i = int(uniform(0,len(meta_names)))
0
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296 #meta = meta_names[i]
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297 meta_names = [meta_names[i]]
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298 if META_DEBUG: print "using: " + str(meta_names)
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299 else:
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300 if META_DEBUG: print "using all metas: " + str(meta_names)
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301 return meta_names
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302 except Exception,e:
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303 print e
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304 #print "using default meta server URI: " + default_url
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305 metas = []
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306 #metas.append(default_url)
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307 return metas # return an empty list
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308 else: # otherwise, use MetaServerBaseURL()
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309 url = getMetaServerBaseURL()
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310 meta_names.append(url)
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311 return meta_names
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312
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313 def getMetaServerBaseURL():
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314 # get meta server URL
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315 url = "http://orpgmeta.appspot.com/"
0
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316 try:
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317 component.get('validate').config_file("settings.xml","default_settings.xml")
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318 ini = open(dir_struct["user"]+"settings.xml","r")
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319 txt = ini.read()
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320 xml = component.get('xml')
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321 tree = xml.parseXml(txt)._get_documentElement()
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322 ini.close()
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323 node_list = tree.getElementsByTagName("MetaServerBaseURL")
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324 if node_list:
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325 url = node_list[0].getAttribute("value")
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326 print url
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327 # allow tree to be collected
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328 try: tree.unlink()
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329 except: pass
0
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330
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331 except Exception,e:
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332 print e
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333 #print "using meta server URI: " + url
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334 return url
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335
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336 """
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337 Beginning of Class registerThread
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338
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339 A Class to Manage Registration with the Meta2
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340 Create an instance and call it's start() method
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341 if you want to be (and stay) registered. This class
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342 will take care of registering and re-registering as
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343 often as necessary to stay in the Meta list.
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344
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345 You may call register() yourself if you wish to change your
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346 server's name. It will immediately update the Meta. There
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347 is no need to unregister first.
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348
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349 Call unregister() when you no longer want to be registered.
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350 This will result in the registerThread dying after
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351 attempting to immediately remove itself from the Meta.
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352
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353 If you need to become registered again after that, you
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354 must create a new instance of class registerThread. Don't
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355 just try to call register() on the old, dead thread class.
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356 """
0
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357
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358 class registerThread(Thread):
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359 """
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360 Originally, I wrote this as a sub-class of wxThread, but
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361 A) I couldn't get it to import right
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362 B) I realized that I want this to be used in a server,
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363 which I don't want needing wxWindows to run!
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364
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365 Because of this fact, there are some methods from wxThread
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366 that I implemented to minimize changes to the code I had
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367 just written, i.e. TestDeleteStatus() and Delete()
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368 """
0
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369
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370 def __init__(self, name=None, realHostName=None, num_users="0",
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371 MetaPath=None, port=6774, register_callback=None):
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372 Thread.__init__(self, name="registerThread")
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373 self.rlock = RLock() # Re-entrant lock used to make this class thread safe
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374 self.die_event = Event() # The main loop in run() will wait with timeout on this
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375 self.name = name or 'Unnamed Server' # Name that the server want's displayed on the Meta
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376 # But use Unnamed Server if for some crazy reason
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377 # no name is passed to the constructor
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378 self.num_users = num_users # the number of users currently on this server
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379 self.realHostName = realHostName # Name to advertise for connection
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380 self.id = "0" # id returned from Meta. Defaults to "0", which
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381 # indicates a new registration.
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382 self.cookie = "0" # cookie returned from Meta. Defaults to "0", which
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383 # indicates a new registration.
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384 self.interval = 0 # interval returned from Meta. Is how often to
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385 # re-register, in minutes.
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386 self.destroy = 0 # Used to flag that this thread should die
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387 self.port = str(port)
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388 self.register_callback = register_callback # set a method to call to report result of register
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389 """
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390 This thread will communicate with one and only one
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391 Meta. If the Meta in ini.xml is changed after
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392 instantiation, then this instance must be
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393 unregistered and a new instance instantiated.
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394
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395 Also, if MetaPath is specified, then use that. Makes
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396 it easier to have multiple registerThreads going to keep the server registered
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397 on multiple (compatible) Metas.
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398 """
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399 if MetaPath == None: self.path = getMetaServerBaseURL() # Do this if no Meta specified
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400 else: self.path = MetaPath
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401
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402 def getIdAndCookie(self):
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403 return self.id, self.cookie
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404
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405 def TestDeleteStatus(self):
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406 try:
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407 self.rlock.acquire()
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408 return self.die_event.isSet()
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409 finally: self.rlock.release()
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410
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411 def Delete(self):
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412 try:
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413 self.rlock.acquire()
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414 self.die_event.set()
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415 finally: self.rlock.release()
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416
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417 def run(self):
100
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parents: 92
diff changeset
418 """
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parents: 92
diff changeset
419 This method gets called by Thread implementation
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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parents: 92
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420 when self.start() is called to begin the thread's
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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parents: 92
diff changeset
421 execution
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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parents: 92
diff changeset
422
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sirebral
parents: 92
diff changeset
423 We will basically enter a loop that continually
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
424 re-registers this server and sleeps Interval
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sirebral
parents: 92
diff changeset
425 minutes until the thread is ordered to die in place
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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parents: 92
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426 """
135
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
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parents: 100
diff changeset
427 while(not self.TestDeleteStatus()): # Loop while until told to die
0
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428 # Otherwise, call thread safe register().
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429 self.register(self.name, self.realHostName, self.num_users)
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parents:
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430 if META_DEBUG: print "Sent Registration Data"
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parents:
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431 # register() will end up setting the state variables
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432 # for us, including self.interval.
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parents:
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433 try:
135
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434 self.rlock.acquire() # Serialize access to this state information
0
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435
135
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436 if self.interval >= 3: # If the number of minutes is one or greater
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437 self.interval -= 1 # wake up with 30 seconds left to re-register
0
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438 else:
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439 self.interval = .5 # Otherwise, we probably experienced some kind
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440 # of error from the Meta in register(). Sleep
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441 # for 6 seconds and start from scratch.
0
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442
135
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443 finally: self.rlock.release() # no matter what, release the lock
0
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444 # Wait interval minutes for a command to die
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445 die_signal = self.die_event.wait(self.interval*60)
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446
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447 # If we get past the while loop, it's because we've been asked to die,
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448 # so just let run() end. Once this occurs, the thread is dead and
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449 # calls to Thread.isAlive() return False.
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450
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451 def unregister(self):
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452 """
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453 This method can (I hope) be called from both within the thread
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454 and from other threads. It will attempt to unregister this
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455 server from the Meta database
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parents: 92
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456 When this is either accomplished or has been tried hard enough
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457 (after which it just makes sense to let the Meta remove the
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sirebral
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diff changeset
458 entry itself when we don't re-register using this id),
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459 this method will either cause the thread to immediately die
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460 (if called from this thread's context) or set the Destroy flag
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sirebral
parents: 92
diff changeset
461 (if called from the main thread), a positive test for which will cause
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sirebral
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462 the code in Entry() to exit() when the thread wakes up and
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parents: 92
diff changeset
463 checks TestDeleteStatus().
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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parents: 92
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464 lock the critical section. The unlock will
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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parents: 92
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465 automatically occur at the end of the function in the finally clause
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466 """
0
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467 try:
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468 self.rlock.acquire()
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diff changeset
469 if not self.isAlive(): # check to see if this thread is dead
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470 return 1 # If so, return an error result
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471 # Do the actual unregistering here
135
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472 data = urlencode( {"server_data[id]":self.id,
0
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473 "server_data[cookie]":self.cookie,
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parents:
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474 "server_data[version]":PROTOCOL_VERSION,
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475 "act":"unregister"} )
135
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diff changeset
476 try: # this POSTS the request and returns the result
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diff changeset
477 xml_dom = get_server_dom(data=data, path=self.path)
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
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parents: 100
diff changeset
478 if xml_dom.get("errmsg"):
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
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479 print "Error durring unregistration: " + xml_dom.get("errmsg")
0
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parents:
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480 except:
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481 if META_DEBUG: print "Problem talking to Meta. Will go ahead and die, letting Meta remove us."
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parents:
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482 # If there's an error, echo it to the console
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483
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484 # No special handling is required. If the de-registration worked we're done. If
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parents:
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485 # not, then it's because we've already been removed or have a bad cookie. Either
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parents:
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486 # way, we can't do anything else, so die.
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487 self.Delete() # This will cause the registerThread to die in register()
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parents:
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488 # prep xml_dom for garbage collection
100
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diff changeset
489 try: xml_dom.unlink()
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490 except: pass
0
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491 return 0
100
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492 finally: self.rlock.release()
0
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parents:
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493
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494 def register(self, name=None, realHostName=None, num_users=None):
100
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parents: 92
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495 """
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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diff changeset
496 Designed to handle the registration, both new and
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
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diff changeset
497 repeated.
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diff changeset
498
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499 It is intended to be called once every interval
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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parents: 92
diff changeset
500 (or interval - delta) minutes.
0
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sirebral
parents:
diff changeset
501
100
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parents: 92
diff changeset
502 lock the critical section. The unlock will
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
503 automatically occur at the end of the function in the finally clause
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
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504 """
0
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sirebral
parents:
diff changeset
505 try:
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parents:
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506 self.rlock.acquire()
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parents:
diff changeset
507 if not self.isAlive(): # check to see if this thread is dead
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parents:
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508 return 1 # If so, return an error result
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sirebral
parents:
diff changeset
509
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parents:
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510 # Set the server's attibutes, if specified.
100
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parents: 92
diff changeset
511 if name: self.name = name
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
512 if num_users != None: self.num_users = num_users
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diff changeset
513 if realHostName: self.realHostName = realHostName
0
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sirebral
parents:
diff changeset
514 # build POST data
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parents:
diff changeset
515 if self.realHostName:
135
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
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diff changeset
516 data = urlencode( {"server_data[id]":self.id,
0
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parents:
diff changeset
517 "server_data[cookie]":self.cookie,
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sirebral
parents:
diff changeset
518 "server_data[name]":self.name,
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parents:
diff changeset
519 "server_data[port]":self.port,
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sirebral
parents:
diff changeset
520 "server_data[version]":PROTOCOL_VERSION,
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sirebral
parents:
diff changeset
521 "server_data[num_users]":self.num_users,
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sirebral
parents:
diff changeset
522 "act":"register",
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parents:
diff changeset
523 "server_data[address]": self.realHostName } )
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sirebral
parents:
diff changeset
524 else:
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sirebral
parents:
diff changeset
525 if META_DEBUG: print "Letting meta server decide the hostname to list..."
135
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sirebral
parents: 100
diff changeset
526 data = urlencode( {"server_data[id]":self.id,
0
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sirebral
parents:
diff changeset
527 "server_data[cookie]":self.cookie,
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sirebral
parents:
diff changeset
528 "server_data[name]":self.name,
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sirebral
parents:
diff changeset
529 "server_data[port]":self.port,
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sirebral
parents:
diff changeset
530 "server_data[version]":PROTOCOL_VERSION,
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sirebral
parents:
diff changeset
531 "server_data[num_users]":self.num_users,
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sirebral
parents:
diff changeset
532 "act":"register"} )
135
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parents: 100
diff changeset
533 try: # this POSTS the request and returns the result
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
534 etreeEl = get_server_dom(data=data, path=self.path)
0
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sirebral
parents:
diff changeset
535 except:
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sirebral
parents:
diff changeset
536 if META_DEBUG: print "Problem talking to server. Setting interval for retry ..."
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sirebral
parents:
diff changeset
537 if META_DEBUG: print data
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sirebral
parents:
diff changeset
538 if META_DEBUG: print
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sirebral
parents:
diff changeset
539 self.interval = 0
100
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
540 """
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
541 If we are in the registerThread thread, then setting interval to 0
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
542 will end up causing a retry in about 6 seconds (see self.run())
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
543 If we are in the main thread, then setting interval to 0 will do one
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
544 of two things:
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
545 1) Do the same as if we were in the registerThread
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
546 2) Cause the next, normally scheduled register() call to use the values
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
547 provided in this call.
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
548
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sirebral
parents: 92
diff changeset
549 Which case occurs depends on where the registerThread thread is when
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
550 the main thread calls register().
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
551 """
0
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sirebral
parents:
diff changeset
552 return 0 # indicates that it was okay to call, not that no errors occurred
100
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sirebral
parents: 92
diff changeset
553
0
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sirebral
parents:
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554 # If there is a DOM returned ....
135
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sirebral
parents: 100
diff changeset
555 if etreeEl:
0
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parents:
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556 # If there's an error, echo it to the console
135
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parents: 100
diff changeset
557 if etreeEl.get("errmsg"):
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
558 print "Error durring registration: " + etreeEl.get("errmsg")
0
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sirebral
parents:
diff changeset
559 if META_DEBUG: print data
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sirebral
parents:
diff changeset
560 if META_DEBUG: print
100
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
561 """
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
562 No special handling is required. If the registration worked, id, cookie, and interval
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
563 can be stored and used for the next time.
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
564 If an error occurred, then the Meta will delete us and we need to re-register as
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
565 a new server. The way to indicate this is with a "0" id and "0" cookie sent to
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
566 the server during the next registration. Since that's what the server returns to
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
567 us on an error anyway, we just store them and the next registration will
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
568 automatically be set up as a new one.
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
569
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
570 Unless the server calls register() itself in the meantime. Of course, that's okay
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
571 too, because a success on THAT register() call will set up the next one to use
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
572 the issued id and cookie.
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
573
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
574 The interval is stored unconditionally for similar reasons. If there's an error,
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
575 the interval will be less than 1, and the main thread's while loop will reset it
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
576 to 6 seconds for the next retry.
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
577 Is it wrong to have a method where there's more comments than code? :)
7ed4979cc1cf Traipse Beta 'OpenRPG' {090925-00}
sirebral
parents: 92
diff changeset
578 """
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
579 try:
135
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
580 self.interval = int(etreeEl.get("interval"))
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
581 self.id = etreeEl.get("id")
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
582 self.cookie = etreeEl.get("cookie")
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
583 if not etreeEl.get("errmsg"): updateMetaCache(xml_dom)
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
584 except:
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
585 if META_DEBUG: print
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
586 if META_DEBUG: print "OOPS! Is the Meta okay? It should be returning an id, cookie, and interval."
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
587 if META_DEBUG: print "Check to see what it really returned.\n"
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
588 # Let xml_dom get garbage collected
135
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
589 try: xml_dom.unlink()
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
590 except: pass
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
591 else: # else if no DOM is returned from get_server_dom()
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
592 print "Error - no DOM constructed from Meta message!"
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
593 return 0 # Let caller know it was okay to call us
135
dcf4fbe09b70 Traipse Beta 'OpenRPG' {091010-00}
sirebral
parents: 100
diff changeset
594 finally: self.rlock.release()
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
595 # End of class registerThread
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
596 ################################################################################