xonstat/models.py

   1 import json
   2 import logging
   3 import math
   4 import sqlalchemy
   5 import sqlalchemy.sql.functions as sfunc
   6 from datetime import timedelta
   7 from sqlalchemy.orm import mapper
   8 from sqlalchemy.orm import scoped_session
   9 from sqlalchemy.orm import sessionmaker
  10 from sqlalchemy.ext.declarative import declarative_base
  11 from xonstat.elo import ELOPARMS, KREDUCTION
  12 from xonstat.util import strip_colors, html_colors, pretty_date
  13
  14 log = logging.getLogger(__name__)
  15
  16 DBSession = scoped_session(sessionmaker())
  17 Base = declarative_base()
  18
  19 # define objects for all tables
  20 class Player(object):
  21     def nick_html_colors(self):
  22         if self.nick is None:
  23             return "Anonymous Player"
  24         else:
  25             return html_colors(self.nick)
  26
  27     def nick_strip_colors(self):
  28         if self.nick is None:
  29             return "Anonymous Player"
  30         else:
  31             return strip_colors(self.nick)
  32
  33     def joined_pretty_date(self):
  34         return pretty_date(self.create_dt)
  35
  36     def __repr__(self):
  37         return "<Player(%s, %s)>" % (self.player_id, self.nick.encode('utf-8'))
  38
  39     def to_dict(self):
  40         return {'player_id':self.player_id, 'name':self.nick.encode('utf-8')}
  41
  42
  43 class GameType(object):
  44     def __repr__(self):
  45         return "<GameType(%s, %s, %s)>" % (self.game_type_cd, self.descr, self.active_ind)
  46
  47     def to_dict(self):
  48         return {'game_type_cd':self.game_type_cd, 'name':self.descr, 'active':self.active_ind}
  49
  50
  51 class Weapon(object):
  52     def __repr__(self):
  53         return "<Weapon(%s, %s, %s)>" % (self.weapon_cd, self.descr, self.active_ind)
  54
  55     def to_dict(self):
  56         return {'weapon_cd':self.weapon_cd, 'name':self.descr, 'active':self.active_ind}
  57
  58
  59 class Server(object):
  60     def __init__(self, name=None, hashkey=None, ip_addr=None):
  61         self.name = name
  62         self.hashkey = hashkey
  63         self.ip_addr = ip_addr
  64
  65     def __repr__(self):
  66         return "<Server(%s, %s)>" % (self.server_id, self.name.encode('utf-8'))
  67
  68     def to_dict(self):
  69         return {'server_id':self.server_id, 'name':self.name.encode('utf-8')}
  70
  71
  72 class Map(object):
  73     def __init__(self, name=None):
  74         self.name = name
  75
  76     def __repr__(self):
  77         return "<Map(%s, %s, %s)>" % (self.map_id, self.name, self.version)
  78
  79     def to_dict(self):
  80         return {'map_id':self.map_id, 'name':self.name, 'version':self.version}
  81
  82
  83 class Game(object):
  84     def __init__(self, game_id=None, start_dt=None, game_type_cd=None,
  85             server_id=None, map_id=None, winner=None):
  86         self.game_id = game_id
  87         self.start_dt = start_dt
  88         self.game_type_cd = game_type_cd
  89         self.server_id = server_id
  90         self.map_id = map_id
  91         self.winner = winner
  92
  93     def __repr__(self):
  94         return "<Game(%s, %s, %s, %s)>" % (self.game_id, self.start_dt, self.game_type_cd, self.server_id)
  95
  96     def to_dict(self):
  97         return {'game_id':self.game_id, 'start':self.start_dt.strftime('%Y-%m-%dT%H:%M:%SZ'), 'game_type_cd':self.game_type_cd, 'server_id':self.server_id}
  98
  99     def fuzzy_date(self):
 100         return pretty_date(self.start_dt)
 101
 102     def process_elos(self, session, game_type_cd=None):
 103         if game_type_cd is None:
 104             game_type_cd = self.game_type_cd
 105
 106         # we do not have the actual duration of the game, so use the
 107         # maximum alivetime of the players instead
 108         duration = 0
 109         for d in session.query(sfunc.max(PlayerGameStat.alivetime)).\
 110                     filter(PlayerGameStat.game_id==self.game_id).\
 111                     one():
 112             duration = d.seconds
 113
 114         scores = {}
 115         alivetimes = {}
 116         winners = []
 117         losers = []
 118         for (p,s,a,r,t) in session.query(PlayerGameStat.player_id,
 119                 PlayerGameStat.score, PlayerGameStat.alivetime,
 120                 PlayerGameStat.rank, PlayerGameStat.team).\
 121                 filter(PlayerGameStat.game_id==self.game_id).\
 122                 filter(PlayerGameStat.alivetime > timedelta(seconds=0)).\
 123                 filter(PlayerGameStat.player_id > 2).\
 124                 all():
 125                     # scores are per second
 126                     scores[p] = s/float(a.seconds)
 127                     alivetimes[p] = a.seconds
 128
 129                     # winners are either rank 1 or on the winning team
 130                     # team games are where the team is set (duh)
 131                     if r == 1 or (t == self.winner and t is not None):
 132                         winners.append(p)
 133                     else:
 134                         losers.append(p)
 135
 136         player_ids = scores.keys()
 137
 138         elos = {}
 139         for e in session.query(PlayerElo).\
 140                 filter(PlayerElo.player_id.in_(player_ids)).\
 141                 filter(PlayerElo.game_type_cd==game_type_cd).all():
 142                     elos[e.player_id] = e
 143
 144         # ensure that all player_ids have an elo record
 145         for pid in player_ids:
 146             if pid not in elos.keys():
 147                 elos[pid] = PlayerElo(pid, game_type_cd)
 148
 149         for pid in player_ids:
 150             elos[pid].k = KREDUCTION.eval(elos[pid].games, alivetimes[pid],
 151                     duration)
 152             if elos[pid].k == 0:
 153                 del(elos[pid])
 154                 del(scores[pid])
 155                 del(alivetimes[pid])
 156
 157                 if pid in winners:
 158                     winners.remove(pid)
 159                 else:
 160                     losers.remove(pid)
 161
 162         elos = self.update_elos(session, elos, scores, winners, losers, ELOPARMS)
 163
 164         # add the elos to the session for committing
 165         for e in elos:
 166             session.add(elos[e])
 167
 168     def update_elos(self, session, elos, scores, winners, losers, ep):
 169         if len(elos) < 2 or len(winners) == 0 or len(losers) == 0:
 170             return elos
 171
 172         pids = elos.keys()
 173
 174         elo_deltas = {}
 175         for w_pid in winners:
 176             w_elo = elos[w_pid]
 177             for l_pid in losers:
 178                 l_elo = elos[l_pid]
 179
 180                 w_q = math.pow(10, float(w_elo.elo)/400.0)
 181                 l_q = math.pow(10, float(l_elo.elo)/400.0)
 182
 183                 w_delta = w_elo.k * ELOPARMS.global_K * (1 - w_q/(w_q + l_q))
 184                 l_delta = l_elo.k * ELOPARMS.global_K * (0 - l_q/(l_q + w_q))
 185
 186                 elo_deltas[w_pid] = (elo_deltas.get(w_pid, 0.0) + w_delta)
 187                 elo_deltas[l_pid] = (elo_deltas.get(l_pid, 0.0) + l_delta)
 188
 189                 log.debug("Winner {0}'s elo_delta vs Loser {1}: {2}".format(w_pid,
 190                     l_pid, w_delta))
 191
 192                 log.debug("Loser {0}'s elo_delta vs Winner {1}: {2}".format(l_pid,
 193                     w_pid, l_delta))
 194
 195                 log.debug("w_elo: {0}, w_k: {1}, w_q: {2}, l_elo: {3}, l_k: {4}, l_q: {5}".\
 196                         format(w_elo.elo, w_elo.k, l_q, l_elo.elo, l_elo.k, l_q))
 197
 198         for pid in pids:
 199             # average the elo gain for team games
 200             if pid in winners:
 201                 elo_deltas[pid] = elo_deltas.get(pid, 0.0) / len(losers)
 202             else:
 203                 elo_deltas[pid] = elo_deltas.get(pid, 0.0) / len(winners)
 204
 205             old_elo = float(elos[pid].elo)
 206             new_elo = max(float(elos[pid].elo) + elo_deltas[pid], ep.floor)
 207
 208             # in case we've set a different delta from the above
 209             elo_deltas[pid] = new_elo - old_elo
 210
 211             elos[pid].elo = new_elo
 212             elos[pid].games += 1
 213             log.debug("Setting Player {0}'s Elo delta to {1}. Elo is now {2} (was {3}).".\
 214                     format(pid, elo_deltas[pid], new_elo, old_elo))
 215
 216         self.save_elo_deltas(session, elo_deltas)
 217
 218         return elos
 219
 220
 221     def save_elo_deltas(self, session, elo_deltas):
 222         """
 223         Saves the amount by which each player's Elo goes up or down
 224         in a given game in the PlayerGameStat row, allowing for scoreboard display.
 225
 226         elo_deltas is a dictionary such that elo_deltas[player_id] is the elo_delta
 227         for that player_id.
 228         """
 229         pgstats = {}
 230         for pgstat in session.query(PlayerGameStat).\
 231                 filter(PlayerGameStat.game_id == self.game_id).\
 232                 all():
 233                     pgstats[pgstat.player_id] = pgstat
 234
 235         for pid in elo_deltas.keys():
 236             try:
 237                 pgstats[pid].elo_delta = elo_deltas[pid]
 238                 session.add(pgstats[pid])
 239             except:
 240                 log.debug("Unable to save Elo delta value for player_id {0}".format(pid))
 241
 242
 243
 244
 245 class PlayerGameStat(object):
 246     def __init__(self, player_game_stat_id=None, create_dt=None):
 247         self.player_game_stat_id = player_game_stat_id
 248         self.create_dt = create_dt
 249
 250     def __repr__(self):
 251         return "<PlayerGameStat(%s, %s, %s)>" % (self.player_id, self.game_id, self.create_dt)
 252
 253     def to_dict(self):
 254         return {'player_id':self.player_id, 'game_id':self.game_id, 'create_dt':self.create_dt.strftime('%Y-%m-%dT%H:%M:%SZ')}
 255
 256     def nick_stripped(self):
 257         if self.nick is None:
 258             return "Anonymous Player"
 259         else:
 260             return strip_colors(self.nick)
 261
 262     def nick_html_colors(self):
 263         if self.nick is None:
 264             return "Anonymous Player"
 265         else:
 266             return html_colors(self.nick)
 267
 268     def team_html_color(self):
 269         # blue
 270         if self.team == 5:
 271             return "red"
 272         # red
 273         if self.team == 14:
 274             return "blue"
 275         if self.team == 13:
 276             return "yellow"
 277         if self.team == 10:
 278             return "pink"
 279
 280
 281 class Achievement(object):
 282     def __repr__(self):
 283         return "<Achievement(%s, %s, %s)>" % (self.achievement_cd, self.descr, self.limit)
 284
 285     def to_dict(self):
 286         return {'achievement_cd':self.achievement_cd, 'name':self.descr, 'limit':self.limit}
 287
 288
 289 class PlayerAchievement(object):
 290     def __repr__(self):
 291         return "<PlayerAchievement(%s, %s)>" % (self.player_id, self.achievement_cd)
 292
 293     def to_dict(self):
 294         return {'player_id':self.player_id, 'achievement_cd':self.achievement_cd}
 295
 296
 297 class PlayerWeaponStat(object):
 298     def __repr__(self):
 299         return "<PlayerWeaponStat(%s, %s, %s)>" % (self.player_weapon_stats_id, self.player_id, self.game_id)
 300
 301     def to_dict(self):
 302         return {'player_weapon_stats_id':self.player_weapon_stats_id, 'player_id':self.player_id, 'game_id':self.game_id}
 303
 304
 305 class Hashkey(object):
 306     def __init__(self, player_id=None, hashkey=None):
 307         self.player_id = player_id
 308         self.hashkey = hashkey
 309
 310     def __repr__(self):
 311         return "<Hashkey(%s, %s)>" % (self.player_id, self.hashkey)
 312
 313     def to_dict(self):
 314         return {'player_id':self.player_id, 'hashkey':self.hashkey}
 315
 316
 317 class PlayerNick(object):
 318     def __repr__(self):
 319         return "<PlayerNick(%s, %s)>" % (self.player_id, self.stripped_nick)
 320
 321     def to_dict(self):
 322         return {'player_id':self.player_id, 'name':self.stripped_nick}
 323
 324
 325 class PlayerElo(object):
 326     def __init__(self, player_id=None, game_type_cd=None):
 327
 328         self.player_id = player_id
 329         self.game_type_cd = game_type_cd
 330         self.score = 0
 331         self.games = 0
 332         self.elo = ELOPARMS.initial
 333
 334     def __repr__(self):
 335         return "<PlayerElo(pid=%s, gametype=%s, elo=%s)>" % (self.player_id, self.game_type_cd, self.elo)
 336
 337     def to_dict(self):
 338         return {'player_id':self.player_id, 'game_type_cd':self.game_type_cd, 'elo':self.elo}
 339
 340
 341 class PlayerRank(object):
 342
 343     def nick_html_colors(self):
 344         if self.nick is None:
 345             return "Anonymous Player"
 346         else:
 347             return html_colors(self.nick)
 348
 349     def __repr__(self):
 350         return "<PlayerRank(pid=%s, gametype=%s, rank=%s)>" % (self.player_id, self.game_type_cd, self.rank)
 351
 352     def to_dict(self):
 353         return {'player_id':self.player_id, 'game_type_cd':self.game_type_cd, 'rank':self.rank}
 354
 355
 356 def initialize_db(engine=None):
 357     DBSession.configure(bind=engine)
 358     Base.metadata.bind = engine
 359     Base.metadata.create_all(engine)
 360     MetaData = sqlalchemy.MetaData(bind=engine, reflect=True)
 361
 362     # assign all those tables to an object
 363     achievements_table = MetaData.tables['achievements']
 364     cd_achievement_table = MetaData.tables['cd_achievement']
 365     cd_game_type_table = MetaData.tables['cd_game_type']
 366     cd_weapon_table = MetaData.tables['cd_weapon']
 367     db_version_table = MetaData.tables['db_version']
 368     games_table = MetaData.tables['games']
 369     hashkeys_table = MetaData.tables['hashkeys']
 370     maps_table = MetaData.tables['maps']
 371     player_game_stats_table = MetaData.tables['player_game_stats']
 372     players_table = MetaData.tables['players']
 373     player_weapon_stats_table = MetaData.tables['player_weapon_stats']
 374     servers_table = MetaData.tables['servers']
 375     player_nicks_table = MetaData.tables['player_nicks']
 376     player_elos_table = MetaData.tables['player_elos']
 377     player_ranks_table = MetaData.tables['player_ranks']
 378
 379     # now map the tables and the objects together
 380     mapper(PlayerAchievement, achievements_table)
 381     mapper(Achievement, cd_achievement_table)
 382     mapper(GameType, cd_game_type_table)
 383     mapper(Weapon, cd_weapon_table)
 384     mapper(Game, games_table)
 385     mapper(Hashkey, hashkeys_table)
 386     mapper(Map, maps_table)
 387     mapper(PlayerGameStat, player_game_stats_table)
 388     mapper(Player, players_table)
 389     mapper(PlayerWeaponStat, player_weapon_stats_table)
 390     mapper(Server, servers_table)
 391     mapper(PlayerNick, player_nicks_table)
 392     mapper(PlayerElo, player_elos_table)
 393     mapper(PlayerRank, player_ranks_table)