Mercurial > traipse_dev
annotate orpg/networking/meta_server_lib.py @ 231:cc7629ab526d alpha
Traipse Alpha 'OpenRPG' {100614-00}
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 (Closing/Closed)
New Features:
New to Map, can re-order Grid, Miniatures, and Whiteboard layer draw order
New to Server GUI, can now clear log
Fixes:
Fix to InterParse that was causing an Infernal Loop with Namespace Internal
Fix to XML data, removed old Minidom and switched to Element Tree
Fix to Server that was causing eternal attempt to find a Server ID, in Register Rooms thread
Fix to metaservers.xml file not being created
Fix to Single and Double quotes in Whiteboard text
Fix to Background images not showing when using the Image Server
Fix to Duplicate chat names appearing
Fix to Server GUI's logging output
Fix to FNB.COLORFUL_TABS bug.
| author | sirebral |
|---|---|
| date | Mon, 14 Jun 2010 15:20:08 -0500 |
| parents | 2e2281ed40a9 |
| children | 53ae14747ba7 |
| 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: |
| 195 | 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 |
| 228 | 32 META_DEBUG = False |
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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 |
| 96 | 37 from orpg.orpgCore import component |
| 38 from orpg.tools.validate import validate | |
| 39 from orpg.dirpath import dir_struct | |
| 124 | 40 |
| 41 import urllib, time, sys, traceback, re | |
| 42 | |
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43 from threading import * |
| 124 | 44 from random import uniform |
| 228 | 45 import urllib2 |
| 124 | 46 from urllib import urlopen, urlencode |
| 47 from orpg.tools.orpg_log import debug | |
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48 |
| 228 | 49 from xml.etree.ElementTree import Element, fromstring, parse, tostring |
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50 metacache_lock = RLock() |
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51 |
| 228 | 52 def get_server_dom(data=None, path=None, string=False): |
| 53 if path[len(path)-1] != "/": path += '/' | |
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54 |
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55 # POST the data |
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56 if META_DEBUG: |
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57 print |
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58 print "Sending the following POST info to Meta at " + path + ":" |
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59 print "==========================================" |
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60 print data |
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61 print |
| 228 | 62 #recvdata = urllib2.Request(path, data) |
| 63 response = urllib2.urlopen(path, data) | |
| 64 data = response.read() | |
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65 |
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66 # Remove any leading or trailing data. This can happen on some satellite connections |
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67 p = re.compile('(<servers>.*?</servers>)',re.DOTALL|re.IGNORECASE) |
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68 mo = p.search(data) |
| 96 | 69 if mo: data = mo.group(0) |
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70 |
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71 if META_DEBUG: |
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72 print |
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73 print "Got this string from the Meta at " + path + ":" |
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74 print "===============================================" |
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75 print data |
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76 print |
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77 # build dom |
| 228 | 78 if string: return data |
| 79 else: return fromstring(data) | |
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80 |
| 119 | 81 def post_server_data(name, realHostName=None): |
| 124 | 82 if realHostName: data = urlencode({"server_data[name]":name, |
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83 "server_data[version]":PROTOCOL_VERSION, |
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84 "act":"new", |
| 119 | 85 "REMOTE_ADDR": realHostName }) |
| 86 # print "Letting meta server decide the hostname to list..." | |
| 124 | 87 else: data = urlencode({"server_data[name]":name, |
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88 "server_data[version]":PROTOCOL_VERSION, |
| 119 | 89 "act":"new"}) |
| 228 | 90 path = component.get('settings').get('MetaServerBaseURL') #getMetaServerList() |
| 119 | 91 etreeEl = get_server_dom(data, path) |
| 92 return int(etreeEl.get('id')) | |
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93 |
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94 def post_failed_connection(id,meta=None,address=None,port=None): |
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95 # For now, turning this off. This needs to be re-vamped for |
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96 # handling multiple Metas. |
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97 return 0 |
| 124 | 98 #data = urlencode({"id":id,"act":"failed"}); |
| 96 | 99 #xml_dom = get_server_dom(data) |
| 100 #ret_val = int(xml_dom.getAttribute("return")) | |
| 101 #return ret_val | |
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102 |
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103 def remove_server(id): |
| 124 | 104 data = urlencode({"id":id,"act":"del"}); |
| 119 | 105 etreeEl = get_server_dom(data) |
| 106 return int(etreeEl.get("return")) | |
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107 |
| 119 | 108 def byStartAttribute(first, second): |
| 109 # This function is used to easily sort a list of nodes by their start time | |
| 110 # Ensure there is something to sort with for each | |
| 111 first_start = int(first.get('start')) or 0 | |
| 112 second_start = int(second.get('start')) or 0 | |
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113 # Return the result of the cmp function on the two strings |
| 119 | 114 return cmp(first_start, second_start) |
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115 |
| 119 | 116 def byNameAttribute(first, second): |
| 117 # This function is used to easily sort a list of nodes by their name attribute | |
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118 # Ensure there is something to sort with for each |
| 119 | 119 first_name = first.get('name') or '' |
| 120 second_name = second.get('name') or '' | |
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121 # Return the result of the cmp function on the two strings |
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122 return cmp(first_name,second_name) |
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123 |
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124 |
| 228 | 125 def get_server_list(versions=None, sort_by="start"): |
| 124 | 126 data = urlencode({"version":PROTOCOL_VERSION,"ports":"%"}) |
| 228 | 127 #all_metas = getMetaServers(versions, False) # get the list of metas |
| 128 meta_list = getMetaServerList() | |
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129 #all_metas.reverse() # The last one checked will take precedence, so reverse the order |
| 119 | 130 # so that the top one on the actual list is checked last |
| 131 return_hash = {} # this will end up with an amalgamated list of servers | |
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132 |
| 228 | 133 for meta in meta_list: # check all of the metas |
| 96 | 134 #get the server's xml from the current meta |
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135 bad_meta = 0 |
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136 #print "Getting server list from " + meta + "..." |
| 228 | 137 try: xml_dom = get_server_dom(data, meta.get('url')) |
| 138 except: bad_meta = 1; print "Trouble getting servers from " + meta.get('url') + "..." | |
| 119 | 139 if bad_meta: continue |
| 124 | 140 node_list = xml_dom.findall('server') |
| 228 | 141 if len(node_list): |
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142 for n in node_list: |
| 122 | 143 if not n.get('name'): n.set('name','NO_NAME_GIVEN') |
| 119 | 144 name = n.get('name') |
| 122 | 145 if not n.get('num_users'): n.set('num_users','N/A') |
| 119 | 146 num_users = n.get('num_users') |
| 122 | 147 if not n.get('address'): n.set('address','NO_ADDRESS_GIVEN') |
| 119 | 148 address = n.get('address') |
| 122 | 149 if not n.get('port'): n.set('port','6774') |
| 119 | 150 port = n.get('port') |
| 151 n.set('meta',meta) | |
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152 end_point = str(address) + ":" + str(port) |
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153 if return_hash.has_key(end_point): |
| 228 | 154 print end_point |
| 155 print n | |
| 156 | |
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157 if META_DEBUG: print "Replacing duplicate server entry at " + end_point |
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158 return_hash[end_point] = n |
| 119 | 159 server_list = Element('servers') |
| 160 sort_list = return_hash.values() | |
| 161 if sort_by == "start": sort_list.sort(byStartAttribute) | |
| 162 elif sort_by == "name": sort_list.sort(byNameAttribute) | |
| 163 for n in sort_list: server_list.append(n) | |
| 164 return server_list | |
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165 |
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166 ## List Format: |
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167 ## <servers> |
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168 ## <server address=? id=? name=? failed_count=? > |
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169 ## </servers> |
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170 |
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171 def updateMetaCache(xml_dom): |
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172 try: |
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173 if META_DEBUG: print "Updating Meta Server Cache" |
| 119 | 174 metaservers = xml_dom.findall('metaservers') # pull out the metaservers bit |
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175 if len(metaservers) == 0: |
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176 cmetalist = getRawMetaList() |
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177 xml_dom = get_server_dom(cmetalist[0]) |
| 119 | 178 metaservers = xml_dom.findall('metaservers') |
| 179 authoritative = metaservers[0].get('auth') | |
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180 if META_DEBUG: print " Authoritive Meta: "+str(authoritative) |
| 119 | 181 metas = metaservers[0].findall("meta") # get the list of metas |
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182 if META_DEBUG: print " Meta List ("+str(len(metas))+" servers)" |
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183 try: |
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184 metacache_lock.acquire() |
| 96 | 185 ini = open(dir_struct["user"]+"metaservers.cache","w") |
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186 for meta in metas: |
| 119 | 187 if META_DEBUG: print " Writing: "+str(meta.get('path')) |
| 188 ini.write(str(meta.get('path')) + " " + str(meta.get('versions')) + "\n") | |
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189 ini.close() |
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190 finally: |
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191 metacache_lock.release() |
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192 except Exception, e: |
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193 if META_DEBUG: traceback.print_exc() |
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194 print "Meta Server Lib: UpdateMetaCache(): " + str(e) |
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195 |
| 228 | 196 |
| 197 def getMetaServerList(): | |
| 198 # get meta server URL | |
| 199 meta_list = fromstring(""" | |
| 200 <metaservers> | |
| 201 <meta url="http://orpgmeta.appspot.com" versions="1 2" /> | |
| 202 <meta url="http://traipsemeta.madmathlabs.info" versions="1 2" /> | |
| 203 </metaservers>""" | |
| 204 ) | |
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205 try: |
| 228 | 206 component.get('validate').config_file("metaservers.xml","default_metaservers.xml") |
| 96 | 207 component.get('validate').config_file("settings.xml","default_settings.xml") |
| 228 | 208 setting = parse(dir_struct["user"]+"settings.xml") |
| 209 tree = setting.getroot() | |
| 210 node_list = tree.getiterator("MetaServers") | |
| 211 if len(node_list) == 0: | |
| 212 component.get('frame').add_setting('Meta Servers') | |
| 213 setting = parse(dir_struct["user"]+"settings.xml") | |
| 214 metas = parse(dir_struct["user"]+'metaservers.xml').getroot() | |
| 215 else: | |
| 216 meta = node_list[0].get("value") | |
| 217 metas = parse(dir_struct["user"]+meta).getroot() | |
| 218 meta_list = metas.findall('meta') | |
| 219 return meta_list | |
| 220 except Exception,e: print e | |
| 221 return meta_list | |
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222 |
| 96 | 223 """ |
| 224 Beginning of Class registerThread | |
| 225 | |
| 226 A Class to Manage Registration with the Meta2 | |
| 227 Create an instance and call it's start() method | |
| 228 if you want to be (and stay) registered. This class | |
| 229 will take care of registering and re-registering as | |
| 230 often as necessary to stay in the Meta list. | |
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231 |
| 96 | 232 You may call register() yourself if you wish to change your |
| 233 server's name. It will immediately update the Meta. There | |
| 234 is no need to unregister first. | |
| 235 | |
| 236 Call unregister() when you no longer want to be registered. | |
| 237 This will result in the registerThread dying after | |
| 238 attempting to immediately remove itself from the Meta. | |
| 239 | |
| 240 If you need to become registered again after that, you | |
| 241 must create a new instance of class registerThread. Don't | |
| 242 just try to call register() on the old, dead thread class. | |
| 243 """ | |
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244 |
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245 class registerThread(Thread): |
| 96 | 246 """ |
| 247 Originally, I wrote this as a sub-class of wxThread, but | |
| 248 A) I couldn't get it to import right | |
| 249 B) I realized that I want this to be used in a server, | |
| 250 which I don't want needing wxWindows to run! | |
| 251 | |
| 252 Because of this fact, there are some methods from wxThread | |
| 253 that I implemented to minimize changes to the code I had | |
| 254 just written, i.e. TestDeleteStatus() and Delete() | |
| 255 """ | |
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256 |
| 119 | 257 def __init__(self, name=None, realHostName=None, num_users="0", |
| 258 MetaPath=None, port=6774, register_callback=None): | |
| 259 Thread.__init__(self, name="registerThread") | |
| 260 self.rlock = RLock() # Re-entrant lock used to make this class thread safe | |
| 261 self.die_event = Event() # The main loop in run() will wait with timeout on this | |
| 262 self.name = name or 'Unnamed Server' # Name that the server want's displayed on the Meta | |
| 263 # But use Unnamed Server if for some crazy reason | |
| 264 # no name is passed to the constructor | |
| 265 self.num_users = num_users # the number of users currently on this server | |
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266 self.realHostName = realHostName # Name to advertise for connection |
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267 self.id = "0" # id returned from Meta. Defaults to "0", which |
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268 # indicates a new registration. |
| 119 | 269 self.cookie = "0" # cookie returned from Meta. Defaults to "0", which |
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270 # indicates a new registration. |
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271 self.interval = 0 # interval returned from Meta. Is how often to |
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272 # re-register, in minutes. |
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273 self.destroy = 0 # Used to flag that this thread should die |
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274 self.port = str(port) |
| 96 | 275 self.register_callback = register_callback # set a method to call to report result of register |
| 230 | 276 self.IdAttempts = 0 |
| 96 | 277 """ |
| 278 This thread will communicate with one and only one | |
| 279 Meta. If the Meta in ini.xml is changed after | |
| 280 instantiation, then this instance must be | |
| 281 unregistered and a new instance instantiated. | |
| 282 | |
| 283 Also, if MetaPath is specified, then use that. Makes | |
| 284 it easier to have multiple registerThreads going to keep the server registered | |
| 285 on multiple (compatible) Metas. | |
| 286 """ | |
| 228 | 287 if MetaPath == None: self.path = getMetaServerList() # Do this if no Meta specified |
| 119 | 288 else: self.path = MetaPath |
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289 |
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290 def getIdAndCookie(self): |
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291 return self.id, self.cookie |
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292 |
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293 def TestDeleteStatus(self): |
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294 try: |
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295 self.rlock.acquire() |
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296 return self.die_event.isSet() |
| 119 | 297 finally: self.rlock.release() |
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298 |
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299 def Delete(self): |
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300 try: |
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301 self.rlock.acquire() |
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302 self.die_event.set() |
| 119 | 303 finally: self.rlock.release() |
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304 |
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305 def run(self): |
| 96 | 306 """ |
| 307 This method gets called by Thread implementation | |
| 308 when self.start() is called to begin the thread's | |
| 309 execution | |
| 310 | |
| 311 We will basically enter a loop that continually | |
| 312 re-registers this server and sleeps Interval | |
| 313 minutes until the thread is ordered to die in place | |
| 314 """ | |
| 119 | 315 while(not self.TestDeleteStatus()): # Loop while until told to die |
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316 # Otherwise, call thread safe register(). |
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317 self.register(self.name, self.realHostName, self.num_users) |
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318 if META_DEBUG: print "Sent Registration Data" |
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319 # register() will end up setting the state variables |
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320 # for us, including self.interval. |
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321 try: |
| 119 | 322 self.rlock.acquire() # Serialize access to this state information |
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323 |
| 119 | 324 if self.interval >= 3: # If the number of minutes is one or greater |
| 325 self.interval -= 1 # wake up with 30 seconds left to re-register | |
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326 else: |
| 119 | 327 self.interval = .5 # Otherwise, we probably experienced some kind |
| 328 # of error from the Meta in register(). Sleep | |
| 329 # for 6 seconds and start from scratch. | |
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330 |
| 119 | 331 finally: self.rlock.release() # no matter what, release the lock |
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332 # Wait interval minutes for a command to die |
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333 die_signal = self.die_event.wait(self.interval*60) |
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334 |
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335 # If we get past the while loop, it's because we've been asked to die, |
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336 # so just let run() end. Once this occurs, the thread is dead and |
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337 # calls to Thread.isAlive() return False. |
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338 |
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339 def unregister(self): |
| 96 | 340 """ |
| 341 This method can (I hope) be called from both within the thread | |
| 342 and from other threads. It will attempt to unregister this | |
| 343 server from the Meta database | |
| 344 When this is either accomplished or has been tried hard enough | |
| 345 (after which it just makes sense to let the Meta remove the | |
| 346 entry itself when we don't re-register using this id), | |
| 347 this method will either cause the thread to immediately die | |
| 348 (if called from this thread's context) or set the Destroy flag | |
| 349 (if called from the main thread), a positive test for which will cause | |
| 350 the code in Entry() to exit() when the thread wakes up and | |
| 351 checks TestDeleteStatus(). | |
| 352 lock the critical section. The unlock will | |
| 353 automatically occur at the end of the function in the finally clause | |
| 354 """ | |
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355 try: |
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356 self.rlock.acquire() |
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357 if not self.isAlive(): # check to see if this thread is dead |
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358 return 1 # If so, return an error result |
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359 # Do the actual unregistering here |
| 228 | 360 data = urlencode( { "server_data[id]":self.id, |
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361 "server_data[cookie]":self.cookie, |
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362 "server_data[version]":PROTOCOL_VERSION, |
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363 "act":"unregister"} ) |
| 228 | 364 for path in getMetaServerList(): |
| 365 try: # this POSTS the request and returns the result | |
| 366 etreeEl = get_server_dom(data, path.get('url')) | |
| 367 if etreeEl.get("errmsg") != None: | |
| 368 print "Error durring unregistration: " + etreeEl.get("errmsg") | |
| 369 except Exception, e: | |
| 370 if META_DEBUG: print "Problem talking to Meta. Will go ahead and die, letting Meta remove us." | |
| 371 if META_DEBUG: print e | |
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372 # If there's an error, echo it to the console |
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373 |
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374 # No special handling is required. If the de-registration worked we're done. If |
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375 # not, then it's because we've already been removed or have a bad cookie. Either |
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376 # way, we can't do anything else, so die. |
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377 self.Delete() # This will cause the registerThread to die in register() |
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378 # prep xml_dom for garbage collection |
| 96 | 379 try: xml_dom.unlink() |
| 380 except: pass | |
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381 return 0 |
| 96 | 382 finally: self.rlock.release() |
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383 |
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384 def register(self, name=None, realHostName=None, num_users=None): |
| 96 | 385 """ |
| 386 Designed to handle the registration, both new and | |
| 387 repeated. | |
| 388 | |
| 389 It is intended to be called once every interval | |
| 390 (or interval - delta) minutes. | |
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391 |
| 96 | 392 lock the critical section. The unlock will |
| 393 automatically occur at the end of the function in the finally clause | |
| 394 """ | |
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395 try: |
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396 self.rlock.acquire() |
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397 if not self.isAlive(): # check to see if this thread is dead |
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398 return 1 # If so, return an error result |
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399 |
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400 # Set the server's attibutes, if specified. |
| 96 | 401 if name: self.name = name |
| 228 | 402 if num_users != None: |
| 403 try: self.num_users = len(num_users) | |
| 231 | 404 except: self.num_users = num_users |
| 228 | 405 else: self.num_users = 0 |
| 96 | 406 if realHostName: self.realHostName = realHostName |
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407 # build POST data |
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408 if self.realHostName: |
| 228 | 409 data = urlencode( { "server_data[id]":self.id, |
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410 "server_data[cookie]":self.cookie, |
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411 "server_data[name]":self.name, |
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412 "server_data[port]":self.port, |
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413 "server_data[version]":PROTOCOL_VERSION, |
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414 "server_data[num_users]":self.num_users, |
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415 "act":"register", |
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416 "server_data[address]": self.realHostName } ) |
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417 else: |
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418 if META_DEBUG: print "Letting meta server decide the hostname to list..." |
| 228 | 419 data = urlencode( { "server_data[id]":self.id, |
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420 "server_data[cookie]":self.cookie, |
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421 "server_data[name]":self.name, |
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422 "server_data[port]":self.port, |
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423 "server_data[version]":PROTOCOL_VERSION, |
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424 "server_data[num_users]":self.num_users, |
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425 "act":"register"} ) |
| 228 | 426 for path in getMetaServerList(): |
| 427 try: # this POSTS the request and returns the result | |
| 428 etreeEl = get_server_dom(data, path.get('url')) | |
| 429 except Exception, e: | |
| 430 if META_DEBUG: print "Problem talking to server. Setting interval for retry ..." | |
| 431 if META_DEBUG: print data | |
| 432 if META_DEBUG: print e | |
| 433 self.interval = 0 | |
| 434 """ | |
| 435 If we are in the registerThread thread, then setting interval to 0 | |
| 436 will end up causing a retry in about 6 seconds (see self.run()) | |
| 437 If we are in the main thread, then setting interval to 0 will do one | |
| 438 of two things: | |
| 439 1) Do the same as if we were in the registerThread | |
| 440 2) Cause the next, normally scheduled register() call to use the values | |
| 441 provided in this call. | |
| 442 | |
| 443 Which case occurs depends on where the registerThread thread is when | |
| 444 the main thread calls register(). | |
| 445 """ | |
| 446 return 0 # indicates that it was okay to call, not that no errors occurred | |
| 96 | 447 |
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448 # If there is a DOM returned .... |
| 228 | 449 if etreeEl != None: |
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450 # If there's an error, echo it to the console |
| 228 | 451 if etreeEl.get("errmsg") != None: |
| 231 | 452 print "Error durring registration at: " +path.get('url')+ " Error: " +etreeEl.get("errmsg") |
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453 if META_DEBUG: print data |
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454 if META_DEBUG: print |
| 96 | 455 """ |
| 456 No special handling is required. If the registration worked, id, cookie, and interval | |
| 457 can be stored and used for the next time. | |
| 458 If an error occurred, then the Meta will delete us and we need to re-register as | |
| 459 a new server. The way to indicate this is with a "0" id and "0" cookie sent to | |
| 460 the server during the next registration. Since that's what the server returns to | |
| 461 us on an error anyway, we just store them and the next registration will | |
| 462 automatically be set up as a new one. | |
| 463 | |
| 464 Unless the server calls register() itself in the meantime. Of course, that's okay | |
| 465 too, because a success on THAT register() call will set up the next one to use | |
| 466 the issued id and cookie. | |
| 467 | |
| 468 The interval is stored unconditionally for similar reasons. If there's an error, | |
| 469 the interval will be less than 1, and the main thread's while loop will reset it | |
| 470 to 6 seconds for the next retry. | |
| 471 Is it wrong to have a method where there's more comments than code? :) | |
| 472 """ | |
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473 try: |
| 119 | 474 self.interval = int(etreeEl.get("interval")) |
| 475 self.id = etreeEl.get("id") | |
| 476 self.cookie = etreeEl.get("cookie") | |
| 228 | 477 #if etreeEl.get("errmsg") == None: updateMetaCache(xml_dom) |
| 478 except Exception, e: | |
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479 if META_DEBUG: print |
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480 if META_DEBUG: print "OOPS! Is the Meta okay? It should be returning an id, cookie, and interval." |
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481 if META_DEBUG: print "Check to see what it really returned.\n" |
| 228 | 482 if META_DEBUG: print e |
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483 # Let xml_dom get garbage collected |
| 119 | 484 try: xml_dom.unlink() |
| 485 except: pass | |
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486 else: # else if no DOM is returned from get_server_dom() |
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487 print "Error - no DOM constructed from Meta message!" |
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488 return 0 # Let caller know it was okay to call us |
| 119 | 489 finally: self.rlock.release() |
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490 # End of class registerThread |
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491 ################################################################################ |