def __init__(self, test_mode=False):
self._logger = logging.getLogger('ecbb.gm')
# TODO::limit the number of games loaded in memory at the same
# time to avoid too important memory consumption
self._games = {}
self._web_players = {}
self._db = DBInterface(test_mode)
# load constants from DB
(status_ext, self.ext_infos) = self._db.get_extensions_infos()
(status_tz, self.timezones) = self._db.get_timezones()
# if a database error occurs so early, just quit
if status_ext != DB_STATUS.OK or status_tz != DB_STATUS.OK:
sys.exit()
class GamesManager(object):
"""
As we can have multiple games running at the same time we need an
object to handle them.
The entry point for the webserver view.
Save the games in the database after each turn.
Load running games from the database (after a program stop).
Allow to browse ended games.
attributes:
self._games (dict): the games, accessed by their id
self._web_players (dict): the players, accessed by their id
self._db (DBInterface object): the DB interface object
"""
def __init__(self, test_mode=False):
self._logger = logging.getLogger('ecbb.gm')
# TODO::limit the number of games loaded in memory at the same
# time to avoid too important memory consumption
self._games = {}
self._web_players = {}
self._db = DBInterface(test_mode)
# load constants from DB
(status_ext, self.ext_infos) = self._db.get_extensions_infos()
(status_tz, self.timezones) = self._db.get_timezones()
# if a database error occurs so early, just quit
if status_ext != DB_STATUS.OK or status_tz != DB_STATUS.OK:
sys.exit()
def debug(self, msg):
""" called from mako templates to log stuffs """
self._logger.debug(msg)
@engine.util.log
def create_game(self, creator_id, name, level, private, password,
num_players, players_ids, extensions):
""" Instanciate a new game. Save it to the database to get its uniq id.
Store it in self._games. Do not return the created game nor its id, the
game will be visible to the player in the 'my games' view.
args:
creator_id (int): id of the player creating the game
name (str): name of the game given by the creator
level (int): difficulty (1-4)
private (bool): True if password protected to join
password (str): the password to join if private
num_players (int): number of players in the game
players_ids [int, ..., int]: list of players id already added to the
game, includes the creator_id
extensions {id (int) -> name (str)}: activated extensions
return: db_ok (bool)
"""
game = Game(creator_id, name, level, private, password,
num_players, extensions, init_state=True)
(status, game) = self._db.create_game(game, players_ids)
if status != DB_STATUS.OK:
self._logger.error(("Error inserting game {!r} by {} in "
"database.").format(name, creator_id))
return False
(status, _) = self._db.save_state(game)
if status != DB_STATUS.OK:
self._logger.error("Error saving game {} state.".format(game.id_))
return False
self._logger.info("Game {!r} successfully created".format(name))
self._games[game.id_] = game
return True
@engine.util.log
def save_game(self, game):
""" update an existing game into the database.
first save the current state to get its id, then update the game in db.
args: game (Game object): the game to save
return: db_ok (bool), upd_ok (bool)
"""
(status, _) = self._db.save_state(game)
if status != DB_STATUS.OK:
return (False, False)
(status, _) = self._db.save_game(game)
return (status != DB_STATUS.ERROR, status != DB_STATUS.NO_ROWS)
@engine.util.log
def load_game(self, game_id, force=False):
""" load a game from the database if not already in memory.
fully load a game, i.e. also load:
-players
-extensions ids
-states ids
-current state
args:
game_id (int): id of the game to load
force (bool): to force the loading of the game from db even if the game
is already in memory
return:
OK: (db_ok (bool): True, fully loaded Game object)
NO_GAME: (db_ok: True, None)
ERROR: (db_ok: False, None)
"""
if not force and game_id in self._games:
return (True, self._games[game_id])
# load game
(status, game) = self._db.load_game(game_id)
if status == DB_STATUS.ERROR:
self._logger.error("Error loading game {}".format(game_id))
return (False, None)
elif status == DB_STATUS.NO_ROWS:
self._logger.warning("Game {} not found".format(game_id))
return (True, None)
# load players
(status, players_ids) = self._db.get_game_players_ids(game_id)
if status != DB_STATUS.OK:
self._logger.error(("Error loading players ids for game "
"{}").format(game_id))
return (False, None)
game.players_ids = players_ids
for player_id in players_ids:
if self.get_player(player_id) == None:
self._logger.error(("Error loading player {} for game "
"{}").format(player_id, game_id))
return (False, None)
# load extensions
(status, ext) = self._db.get_game_ext(game_id)
if status != DB_STATUS.OK:
self._logger.error(("Error loading extensions for game "
"{}").format(game_id))
return (False, None)
game.extensions = ext
# load states
(status, states_ids) = self._db.get_game_states_ids(game_id)
if status != DB_STATUS.OK:
self._logger.error(("Error loading states ids for game {}"
"").format(game_id))
return (False, None)
game.states_ids = states_ids
# load current state
(status, state) = self._db.load_state(game.cur_state_id())
if status != DB_STATUS.OK:
self._logger.error(("Error loading state {} for game {}"
"").format(game.cur_state_id(), game.id_))
return (False, None)
game.cur_state = state
self._games[game_id] = game
return (True, self._games[game_id])
@engine.util.log
def get_game(self, game_id):
"""
Returns the game, do NOT load it from database if not already in memory.
The caller must have call load_game manually before.
args: game_id (int)
return:
OK: Game object whose id is game_id
ERROR: Raise a KeyError exception
"""
return self._games[game_id]
@engine.util.log
def get_my_games(self, player_id):
""" return the games the player is currently playing
even the non started ones.
args: player_id (int)
return: (db_ok (bool), [game_1, ..., game_n])
"""
status, my_games_ids = self._db.get_my_games_ids(player_id)
if status != DB_STATUS.OK:
return (False, None)
my_games = []
for id_ in my_games_ids:
db_ok, game = self.load_game(id_)
if db_ok and game is not None:
my_games.append(game)
return (True, my_games)
@engine.util.log
def get_pub_priv_games(self):
""" return the not yet started, not ended games, public and private.
args: None
return:
OK: (db_ok (bool): True,
pubs ([game_1, ..., game_n]),
privs ([game_1, ..., game_n]))
ERROR: (db_ok (bool): False, None, None)
"""
status, ids = self._db.get_pub_priv_games_ids()
if status == DB_STATUS.ERROR:
return (False, None, None)
pub_ids, priv_ids = ids
pub_games = []
for id_ in pub_ids:
db_ok, game = self.load_game(id_)
if db_ok and game is not None:
pub_games.append(game)
priv_games = []
for id_ in priv_ids:
db_ok, game = self.load_game(id_)
if db_ok and game is not None:
priv_games.append(game)
return (True, pub_games, priv_games)
@engine.util.log
def _load_player(self, player_id):
""" load a player from the database.
args: player_id (int)
return:
OK: player_id (int)
ERROR: None
"""
(status, player) = self._db.load_player(player_id)
# TODO::handle NO_ROWS and ERROR
if status != DB_STATUS.OK:
return None
else:
self._web_players[player_id] = player
return player_id
@engine.util.log
def get_player(self, player_id):
""" load player if not present then return it.
args: player_id (int)
return:
OK: Player object
ERROR: None
"""
if player_id not in self._web_players:
if self._load_player(player_id) is None:
return None
return self._web_players[player_id]
@engine.util.log
def get_players_infos(self):
""" get minimal infos (id and name) on all registered players.
args: None
return:
OK: [(id_1, name_1), ..., (id_n, name_n)] ordered by name
ERROR: None
"""
(status, players_infos) = self._db.get_players_infos()
if status != DB_STATUS.OK:
return None
else:
return players_infos
@engine.util.log
def auth_player(self, email, password):
""" check player password with the one encrypted in database.
args:
email (str): user email
password (str): plain password
return: (db_ok (bool), auth_ok (bool), player_id (int))
"""
(status, id_) = self._db.auth_player(email, password)
if status == DB_STATUS.OK:
return (True, True, id_)
elif status == DB_STATUS.NO_ROWS:
return (True, False, None)
else:
return (False, None, None)
@engine.util.log
def create_player(self, name, email, password, tz_id):
""" create a new player in the db.
args:
name (str): player name
email (str): player email
password (str): player plain password
tz_id (int): id of the player timezone
return: (db_ok (bool), dup_ok (bool), player_id (int))
"""
(status, id_) = self._db.create_player(name, email, password, tz_id)
if status == DB_STATUS.OK:
return (True, True, id_)
elif status == DB_STATUS.DUP_ERROR:
return (True, False, None)
else:
return (False, None, None)
@engine.util.log
def update_player(self, player, to_update):
""" update player email/password/tz_id in the db.
args:
player: unmodified Player object to update.
to_update (dict): possible keys:
email (str): new player email
password (str): new player password
timezone (int): new timezone id
return: (db_ok (bool), upd_ok (bool))
"""
(status, dummy) = self._db.update_player(player, to_update)
if status == DB_STATUS.OK:
# update player in memory
if self._load_player(player.id_) is None:
return (False, True)
else:
return (True, True)
elif status == DB_STATUS.DUP_ERROR or status == DB_STATUS.NO_ROWS:
return (True, False)
else:
return(False, False)
