/*
- * jQuery 1.2.1 - New Wave Javascript
+ * jQuery 1.2.2 - New Wave Javascript
*
* Copyright (c) 2007 John Resig (jquery.com)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
- * $Date: 2007-09-16 23:42:06 -0400 (Sun, 16 Sep 2007) $
- * $Rev: 3353 $
+ * $Date: 2008-01-14 17:56:07 -0500 (Mon, 14 Jan 2008) $
+ * $Rev: 4454 $
*/
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\ No newline at end of file
--- /dev/null
+% coding: utf-8
+% Ce module permet de gérer les données persistantes lié au minichat d'euphorik.ch
+% Il permet d'ajouter des message, de demande les messages sur une page donnée, etc..
+% Ce module utilise la base mnesia créée par le module euphorik_bd.
+% Auteur : G.Burri
+% Date : 22.10.2007
+
+-module(euphorik_minichat).\r
+-export([
+ connect/0,
+ % get :
+ messages/1,
+ messages/2,\r
+ messages/3,
+ get_messages_depuis_ids/1,
+ reponses/0,
+ repond_a/1,
+ get_nb_page/1,
+ users/0,
+ get_user_by_cookie/1,
+ get_user_by_id/1, \r
+ get_user_by_login/1,
+ get_user_by_login_password/2,
+ possede_message/2,
+ a_repondu_a_message/2,
+ est_une_reponse_a_user/2,
+ % set :\r
+ update_pseudo_user/2,
+ set_profile/6,
+ update_date_derniere_connexion/1,
+ nouveau_user/2,
+ nouveau_user/3,
+ nouveau_message/3,
+ reset/0,
+ % reservé :
+ resultat_transaction/1]).\r
+\r
+-include("../include/euphorik_bd.hrl").\r
+-include_lib("stdlib/include/qlc.hrl").\r
+
+% Un message est considéré comme du spam s'il est posté 1 seconde ou moins après le dernier posté
+-define(DUREE_SPAM, 1000). % ms
+
+% Lorsque l'indice de spam d'un utilisateur atteind cette valeur alors il ne peut plus poster pendant un moment
+-define(INDICE_SPAM_MAX, 6).
+
+% Un utilisateur ayant trop spamé est bloqué pendant ce temps
+-define(DUREE_BLOCAGE_SPAM, 20000). % ms
+\r
+
+% Connexion à la base de données de yaws sur overnux
+connect() ->
+ mnesia:start(),
+ mnesia:change_config(extra_db_nodes, [yaws@Plop]).
+
+
+% Efface tous les users, minichat_reponse et minichat.\r
+reset() ->\r
+ mnesia:clear_table(counter),\r
+ mnesia:clear_table(user),\r
+ mnesia:clear_table(reponse_minichat),\r
+ mnesia:clear_table(minichat),\r
+ % crée l'utilisateur root\r
+ mnesia:transaction(fun() ->\r
+ User = #user{id = 0, pseudo = "Sys", login = "Sys", date_creation = now(), date_derniere_connexion = now()},\r
+ mnesia:write(User),\r
+ User\r
+ end).
+
+
+% Est-ce qu'un utilisateur existe en fonction de son cookie ?
+% Renvoie {ok, User} ou erreur
+get_user_by_cookie(Cookie) ->
+ resultat_transaction(mnesia:transaction(
+ fun() ->
+ Users = qlc:e(qlc:q([E || E <- mnesia:table(user), E#user.cookie =:= Cookie])),
+ case Users of
+ [User] -> {ok, User};
+ _ -> erreur
+ end
+ end
+ )).
+
+
+get_user_by_id(ID) ->
+ resultat_transaction(mnesia:transaction(
+ fun() ->
+ Users = qlc:e(qlc:q([E || E <- mnesia:table(user), E#user.id =:= ID])),
+ case Users of
+ [User] -> {ok, User};
+ _ -> erreur
+ end
+ end
+ )).
+ \r
+ \r
+get_user_by_login(Login) ->\r
+ resultat_transaction(mnesia:transaction(\r
+ fun() ->\r
+ Users = qlc:e(qlc:q([E || E <- mnesia:table(user), E#user.login =:= Login])),\r
+ case Users of\r
+ [User] -> {ok, User};\r
+ _ -> erreur\r
+ end\r
+ end\r
+ )).\r
+
+
+get_user_by_login_password(Login, Password) ->
+ resultat_transaction(mnesia:transaction(
+ fun() ->
+ Users = qlc:e(qlc:q([E || E <- mnesia:table(user), E#user.login =:= Login, E#user.password =:= Password])),
+ case Users of
+ [User] -> {ok, User};
+ _ -> erreur
+ end
+ end
+ )).\r
+ \r
+ \r
+% Renvoie l'utilisateur root\r
+get_root() ->\r
+ {ok, User} = get_user_by_id(0),\r
+ User.
+
+ \r
+% Est-ce que Id_user possède Id_mess ?
+possede_message(Id_user, Id_mess) ->
+ case mnesia:transaction(
+ fun() ->
+ qlc:e(qlc:q([E#minichat.auteur_id || E <- mnesia:table(minichat), E#minichat.id =:= Id_mess]))
+ end
+ ) of
+ {atomic, [Id_user | []]} -> true;
+ _ -> false
+ end.
+
+
+% Est-ce que Id_user à répondu au message Id_mess
+a_repondu_a_message(Id_user, Id_mess) ->
+ case mnesia:transaction(
+ fun() ->
+ qlc:e(qlc:q([
+ M#minichat.auteur_id || M <- mnesia:table(minichat), R <- mnesia:table(reponse_minichat),
+ R#reponse_minichat.cible =:= Id_mess, R#reponse_minichat.repondant =:= M#minichat.id, M#minichat.auteur_id =:= Id_user
+ ]), [{unique_all, true}])
+ end
+ ) of
+ {atomic, [_]} -> true;
+ _ -> false
+ end.
+
+
+% Est-ce que le message Id_mess est une réponse d'une message de Id_user ?
+est_une_reponse_a_user(Id_user, Id_mess) ->
+ case mnesia:transaction(
+ fun() ->
+ qlc:e(qlc:q([
+ M#minichat.auteur_id || M <- mnesia:table(minichat), R <- mnesia:table(reponse_minichat),
+ M#minichat.auteur_id =:= Id_user, M#minichat.id =:= R#reponse_minichat.cible, R#reponse_minichat.repondant =:= Id_mess
+ ]), [{unique_all, true}])
+ end
+ ) of
+ {atomic, [_]} -> true;
+ _ -> false
+ end.
+
+ \r
+% Met à jour le pseudo du user\r
+update_pseudo_user(UserId, Pseudo) ->\r
+ mnesia:transaction(\r
+ fun() -> \r
+ case mnesia:wread({user, UserId}) of\r
+ [User] when User#user.pseudo =/= Pseudo ->\r
+ mnesia:write(User#user{pseudo = Pseudo});\r
+ _ ->\r
+ mnesia:abort("update_pseudo_user: User inconnu ou pseudo deja à jour")\r
+ end\r
+ end\r
+ ).
+
+
+% Mise à par Cookie les autres peuvent être undefined ce qui veut dire qu'ils ne seront pas modifié.\r
+set_profile(Cookie, Login, Password, Pseudo, Email, Css) ->
+ resultat_transaction(mnesia:transaction(
+ fun() ->
+ case get_user_by_cookie(Cookie) of
+ {ok, User} -> \r
+ case get_user_by_login(Login) of\r
+ {ok, U} when U#user.id =/= User#user.id ->\r
+ login_deja_pris;\r
+ _ -> \r
+ User_modifie = User#user{\r
+ login = if is_list(Login) -> Login; true -> User#user.login end,\r
+ password = if is_list(Password) -> Password; true -> User#user.password end,\r
+ pseudo = if is_list(Pseudo) -> Pseudo; true -> User#user.pseudo end,\r
+ email = if is_list(Email) -> Email; true -> User#user.email end,\r
+ css = if is_list(Css) -> Css; true -> User#user.css end\r
+ },\r
+ mnesia:write(User_modifie),\r
+ ok\r
+ end;
+ _ -> erreur
+ end
+ end
+ )).
+
+
+% Met à jour la date de la dernière connexion d'un utilisateur à maintenant
+update_date_derniere_connexion(UserId) ->\r
+ mnesia:transaction(\r
+ fun() ->\r
+ case mnesia:wread({user, UserId}) of\r
+ [User] ->\r
+ mnesia:write(User#user{date_derniere_connexion = now()});\r
+ _ ->\r
+ mnesia:abort("update_date_derniere_connexion: User inconnu")\r
+ end\r
+ end\r
+ ).
+ \r
+
+% Ajoute un nouveau user et le renvoie\r
+nouveau_user(Pseudo, Cookie) ->\r
+ F = fun() ->\r
+ Id = get_nouvel_id(user),
+ User = #user{id = Id, cookie = Cookie, pseudo = Pseudo, date_creation = now(), date_derniere_connexion = now()},\r
+ mnesia:write(User),\r
+ User\r
+ end,\r
+ resultat_transaction(mnesia:transaction(F)).\r
+
+
+% Ajoute un nouveau user et le renvoie
+nouveau_user(Login, Password, Cookie) ->
+ F = fun() ->
+ Id = get_nouvel_id(user),
+ User = #user{id = Id, cookie = Cookie, pseudo = Login, login = Login, password = Password, date_creation = now(), date_derniere_connexion = now()},
+ mnesia:write(User),
+ User
+ end,
+ resultat_transaction(mnesia:transaction(F)).
+ \r
+\r
+% Ajoute un message. Repond_A est une liste d'id auquel le message répond
+% retourne soit l'id du message soit erreur.\r
+nouveau_message(Mess, Auteur_id, Repond_A) ->\r
+ % regarde si les id 'Repond_A' existent\r
+ F = fun() -> \r
+ Nb_id_trouve = length(qlc:e(qlc:q([E#minichat.id || E <- mnesia:table(minichat), lists:member(E#minichat.id, Repond_A)]))),\r
+ % est-ce que l'auteur existe ?\r
+ Auteur = case qlc:e(qlc:q([E || E <- mnesia:table(user), E#user.id =:= Auteur_id])) of\r
+ [A] -> A;\r
+ _ -> throw("L'auteur du message est introuvable")\r
+ end,
+ if Nb_id_trouve =/= length(Repond_A) -> throw("Un ou plusieurs messages introuvable");
+ true -> ok
+ end,\r
+ Id = get_nouvel_id(minichat),
+ % compare les dernière
+ Delta = delta_date_ms(Auteur#user.date_derniere_connexion, now()),
+ Nouvel_indice_flood = Auteur#user.indice_flood + if Delta =< ?DUREE_SPAM -> 2; true -> -1 end,
+ Auteur_maj = Auteur#user{
+ indice_flood = if Nouvel_indice_flood > ?INDICE_SPAM_MAX -> ?INDICE_SPAM_MAX; Nouvel_indice_flood < 0 -> 0; true -> Nouvel_indice_flood end,
+ date_derniere_connexion = now()
+ },
+ % est-ce que l'auteur à trop floodé ?
+ if Auteur#user.indice_flood =/= ?INDICE_SPAM_MAX, Auteur_maj#user.indice_flood =:= ?INDICE_SPAM_MAX, Delta =< ?DUREE_BLOCAGE_SPAM ->\r
+ Root = get_root(),
+ mnesia:write(Auteur#user{indice_flood = Auteur_maj#user.indice_flood}),
+ mnesia:write(#minichat{id=Id, auteur_id=Root#user.id, date=now(), pseudo=Root#user.pseudo, contenu=Auteur#user.pseudo ++ "(" ++ Auteur#user.login ++ ") est bloqué pour " ++ integer_to_list(trunc(?DUREE_BLOCAGE_SPAM / 1000)) ++ " secondes pour cause de flood.."}),
+ Id;
+ Auteur#user.indice_flood =:= ?INDICE_SPAM_MAX, Delta =< ?DUREE_BLOCAGE_SPAM ->
+ erreur;
+ true ->
+ mnesia:write(Auteur_maj),
+ inserer_reponses(Id, Repond_A),
+ mnesia:write(#minichat{id=Id, auteur_id=Auteur#user.id, date=now(), pseudo=Auteur#user.pseudo, contenu=Mess}),
+ Id
+ end\r
+ end,\r
+ resultat_transaction(mnesia:transaction(F)).
+
+
+% Retourne la difference entre deux timestamp (erlang:now()) en miliseconde
+delta_date_ms(D1, D2) ->
+ 1000000000 * abs(element(1, D1) - element(1, D2)) + 1000 * abs(element(2, D1) - element(2, D2)) + trunc(abs(element(3, D1) - element(3, D2)) / 1000).
+\r
+\r
+% Définit Id_repondant comme étant la réponse à Ids. Ids est une liste d'id.\r
+inserer_reponses(Id_repondant, [Id_mess | Reste]) ->\r
+ mnesia:write(#reponse_minichat{repondant = Id_repondant, cible = Id_mess}),\r
+ inserer_reponses(Id_repondant, Reste);\r
+inserer_reponses(_, []) ->\r
+ ok.
+ \r
+
+% Renvoie un nouvel id pour une table donnée\r
+get_nouvel_id(Table) ->\r
+ mnesia:dirty_update_counter(counter, Table, 1).
+
+ \r
+% Renvoie les messages manquants pour la page P en sachant qu'il y a N message\r
+% par page et que le dernier message que l'on possède est Id\r
+messages(Id, N, P) ->\r
+ lists:filter(fun (M) -> M#minichat.id > Id end, messages(N, P)).\r
+
+\r
+% Renvoie N messages se trouvant sur la page P\r
+messages(N, P) -> \r
+ F = fun() ->\r
+ C = qlc:cursor(qlc:q([E || E <- qlc:keysort(2, mnesia:table(minichat), [{order, descending}])])),
+ if P > 1 -> qlc:next_answers(C, N * (P - 1));
+ true -> ok
+ end,\r
+ R = qlc:next_answers(C, N),\r
+ qlc:delete_cursor(C),\r
+ lists:reverse(R)\r
+ end,\r
+ resultat_transaction(mnesia:transaction(F)).
+
+
+% Renvoie N messages se trouvant sur la première page
+messages(N) ->
+ messages(N, 1).
+
+
+% Renvoie une liste de message (voir #minichat de euphorik_bd.hrl) à partir d'une liste d'id (Ids).
+get_messages_depuis_ids(Ids) ->
+ resultat_transaction(mnesia:transaction(
+ fun() ->
+ % TODO : optimisations ? serait-ce du O(n) ?
+ Query = qlc:q([E || E <- qlc:keysort(2, mnesia:table(minichat), [{order, ascending}]), lists:any(fun(Id) -> Id =:= E#minichat.id end, Ids)]),
+ io:format("~s~n", [qlc:info(Query)]),
+ qlc:e(Query)
+ end
+ )).\r
+
+
+% Renvoie le nombre de page total en fonction du nombre de message par page N
+% TODO : ya pas un moyen moins pourri pour avoir le nombre de record d'une table ?
+get_nb_page(N) ->
+ resultat_transaction(mnesia:transaction(fun() ->
+ ceiling(length(qlc:e(qlc:q([E#minichat.id || E <- mnesia:table(minichat)]))) / N)
+ end)).
+
+
+% Renvoie le numéro de la page sur lequel se trouve le message M en sachant qu'il y a N messages par page.
+page(M, N) ->
+ resultat_transaction(mnesia:transaction(fun() ->
+ ceiling((length(qlc:e(qlc:q([E || E <- mnesia:table(minichat), E#minichat.id >= M])))) / N)
+ end)).\r
+
+
+% Bizarre, cette fonction n'existe pas dans la stdlib.
+ceiling(X) ->
+ T = trunc(X),
+ case (X - T) of
+ Neg when Neg < 0 -> T;
+ Pos when Pos > 0 -> T + 1;
+ _ -> T
+ end.
+
+\r
+% Renvoie tous les users.\r
+users() ->\r
+ resultat_transaction(mnesia:transaction(fun() ->\r
+ qlc:e(qlc:q([E || E <- mnesia:table(user)]))\r
+ end)).
+
+
+% Renvoie les reponses (utilisé normalement uniquement pendant le debug).
+reponses() ->
+ F = fun() ->
+ qlc:e(qlc:q([E || E <- mnesia:table(reponse_minichat)]))
+ end,
+ resultat_transaction(mnesia:transaction(F)).
+
+
+% Renvoie les messages auquel M_id répond.
+repond_a(M_id) ->
+ resultat_transaction(mnesia:transaction(
+ fun() ->
+ qlc:e(qlc:q(
+ [M || E <- mnesia:table(reponse_minichat),
+ M <- mnesia:table(minichat),
+ E#reponse_minichat.repondant =:= M_id,
+ M#minichat.id =:= E#reponse_minichat.cible]))
+ end
+ )).\r
+ \r
+
+% Renvoie le résultat d'une transaction (en décomposant le tuple fournit)\r
+resultat_transaction({_, T}) ->
+ T.\r
+
\ No newline at end of file
--- /dev/null
+% coding: utf-8
+% Ce module permet la gestion des conversations du minichat d'euphorik.
+% Un message (enfant) peut répondre à des messages (ses parents).
+% Un message (parent) peut avoir plusieurs réponses (enfants)
+% Auteur : G.Burri
+% Date : 09.02.2008
+
+-module(euphorik_minichat_conversation).
+
+-include("euphorik_bd.hrl").
+-include_lib("stdlib/include/qlc.hrl").
+
+-import(lists, [reverse/1, any/2, map/2, sublist/3, filter/2]).
+-import(euphorik_minichat, [resultat_transaction/1]).
+-import(qlc, [e/1, q/1, keysort/3]).
+-import(mnesia, [table/1, transaction/1]).
+-compile(export_all).
+
+
+% Renvoie la liste des cibles d'un message M, c'est à dire des messages auquel M répond. N étant le nombre de message par page et
+% P la page à laquelle se limite la recherche.
+% Voir 'conversation/2' pour plus de détail sur la structure retournée.
+%~ get_liste_cibles(M, N, P) ->
+ %~ resultat_transaction(mnesia:transaction(fun() ->
+ %~ Cibles = qlc:e(qlc:q([E#reponse_minichat.cible || E <- mnesia:table(reponse_minichat), E#reponse_minichat.repondant =:= M])),
+ %~ lists:foldl(
+ %~ fun(E, A) ->
+ %~ PageE = page(E, N),
+ %~ if PageE =:= P -> % si E fait partit de la page de l'élément de base alors on le prend
+ %~ [{E, get_liste_cibles(E, N, P)}| A];
+ %~ true ->
+ %~ A
+ %~ end
+ %~ end, [], Cibles)
+ %~ end)).
+
+tester(Racines, N, D, P) ->
+ io:format("~w~n", [conversations(Racines, N, D, P)]).
+
+
+% Crée un process représentant le minichat, renvoie un tuple {Pid, Conversations}
+start(Racines, N, D, P) ->
+ {mise_en_forme_conversations(loop(conversations(Racines, N, D, P))), conversations(Racines, N, D, P)}.
+
+% Attend pour d'autres messages.
+wait(Pid) ->
+ Pid ! {wait, self()},
+ receive
+ {nouveau, Message} -> Message
+ end.
+
+
+
+% Mise en forme des conversations pour l'utilisateur du module.
+mise_en_forme_conversations([]) -> [];
+mise_en_forme_conversations([Principale | Conversations]) ->
+ [mise_en_forme_conversation(Principale), lists:map(fun({_, Cn, _}) -> mise_en_forme_conversation(Cn) end, Conversations)].
+
+% Mise en forme d'une liste d'id de message : [4, 5, 8, ...].
+mise_en_forme_conversation(Messages) ->
+ lists:map(fun(M) -> {euphorik_minichat:get_messages_depuis_ids(), get_parents(M)} end, Messages).
+
+
+loop(Conversations) ->
+ receive
+ {wait, Pid} ->
+ Pid ! {nouveau, attends_nouveaux_messages()}
+ end,
+ loop(Conversations).
+
+
+% Renvoie une liste de conversations, le première élément correspond à la conversation principale.
+% Les autres éléments sont des tuples {C, Cn, X}, voir conversation/4 pour plus d'infos.
+% Racines est une liste de tuple {Id, P} des racines des conversations ou P est la page et Id l'id du message.
+conversations(Racines, N, D, P) ->
+ Conversations = map(fun({Racine, P_conv}) -> conversation(Racine, N, D, P_conv) end, Racines),
+ Conversation_principale = resultat_transaction(transaction(fun() ->
+ Curseur = qlc:cursor(q([E#minichat.id || E <- qlc:sort(table(minichat), [{order, descending}])])),
+ CP2 = get_conversation_principale(Curseur, Conversations, N, P),
+ qlc:delete_cursor(Curseur),
+ CP2
+ end)),
+ [reverse(Conversation_principale) | Conversations].
+
+
+% Construit la conversation principale en fonction d'un curseur C initialement placé sur le dernier message
+% et la liste de conversations.
+% N est le nombre de messages que l'on souhaite.
+% P est le numéro de la page (1, 2, 3...)
+get_conversation_principale(C, Conversations, N, P) ->
+ get_conversation_principale2(C, lists:flatten(map(fun({C2, _, X}) -> C2 -- X end, Conversations)), N, (P - 1) * N).
+% C est le curseur (voir ci dessus)
+% 'Messages' sont les messages que l'on doit enlever de la conversation
+% S est le nombre de messages qu'il faut sauter
+get_conversation_principale2(_, _, 0, _) ->
+ [];
+get_conversation_principale2(C, Messages, N, S) ->
+ case qlc:next_answers(C, 1) of
+ [] -> [];
+ [M] -> % traitement message par message (pas des plus performant :/)
+ %io:format("M: ~p~n", [M]),
+ Doit_etre_saute = lists:any(fun(E) -> E == M end, Messages),
+ if Doit_etre_saute ->
+ get_conversation_principale2(C, Messages, N, S); % le message ne fait pas partie de la conversation
+ S =:= 0 ->
+ [M | get_conversation_principale2(C, Messages, N - 1, S)]; % ok : le message fait partie de la conversation
+ true ->
+ get_conversation_principale2(C, Messages, N, S - 1) % on n'a pas encore atteint le début de la page
+ end
+ end.
+
+
+% Renvoie un tuple {C, Cn, X} où
+% C : La conversation complète
+% Cn : La conversation tronqué en fonction de N, D et P
+% X : La liste des messages répondant à des mess qui ne font pas partie de la conversation
+% Inputs :
+% R : l'id d'un message représentant la racine de la conversation
+% N : le nombre de message par page
+% D : Le dernier message connu 0 si aucun de connu
+% P : La page désirée
+conversation(R, N, D, P) ->
+ {C, X} = conversation([], [R], []),
+ {reverse(C), reverse(filter(fun(E) -> E > D end, sublist(C, N*(P-1)+1, N))), reverse(X)}.
+
+
+% Renvoie un tuple {C, X} où C est la conversation complète et X les messages répondant à des mess qui ne font pas partie de la conversation
+% Attention : les messages de C et de X sont ordrés du plus grand Id au plus petit
+conversation(Messages, [M | Reste], X) ->
+ Est_deja_traite = any(fun(E) -> E =:= M end, Messages),
+ if Est_deja_traite ->
+ conversation(Messages, Reste, X);
+ true ->
+ Enfants = get_enfants(M),
+ Parents = get_parents(M),
+ % un message est dit exiterne si un de ses parent ne fait pas partie de la conversation ou si un de ses parents fait partie de X
+ Est_message_externe = Parents -- Messages =/= [] orelse intersection(Parents, X) =/= [],
+ conversation([M | Messages], Reste ++ Enfants, if Est_message_externe -> [M | X]; true -> X end)
+ end;
+conversation(Messages, [], X) ->
+ {Messages, X}.
+
+
+% Renvoie les enfants d'un message M (les messages qui répondent à M)
+% ordrés du plus petit au plus grand.
+get_enfants(M) ->
+ resultat_transaction(transaction(fun() ->
+ e(q([E#reponse_minichat.repondant || E <- qlc:sort(table(reponse_minichat), [{order, ascending}]), E#reponse_minichat.cible =:= M]))
+ end)).
+
+
+% Renvoie les parents d'un message M (les messages auquels répond M)
+% ordrés du plus petit au plus grand.
+get_parents(M) ->
+ resultat_transaction(transaction(fun() ->
+ e(q([E#reponse_minichat.cible || E <- keysort(1, table(reponse_minichat), [{order, ascending}]), E#reponse_minichat.repondant =:= M]))
+ end)).
+
+
+% Intersection entre deux listes : [1, 3, 4] n [2, 4, 7] = [4]
+intersection(L1, L2) ->
+ lists:filter(fun(X) -> lists:member(X, L1) end, L2).
+
+
+% Attend qu'au moins un nouveau message arrive, function bloquante.
+% Renvoie un tuple {C, M} où C est une liste de numéro de conversation auquel appartient M et M l'Id du nouveau message
+attends_nouveaux_messages() ->
+ case mnesia:subscribe({table, minichat, simple}) of
+ {error, _} = E -> E;
+ _ ->
+ %{ok, F} = file:open("/tmp/log_euphorik_" ++ pid_to_list(self()) ++ ".txt", [write]),
+ %io:format(F, "Test2~n", []),
+ attends_nouveaux_messages2()
+ end.
+attends_nouveaux_messages2() ->
+ %io:format(F, "En attente d'un message !~n", []),
+ receive % attente d'un post
+ {mnesia_table_event, {write, _, _}} ->
+ mnesia:unsubscribe({table, minichat, simple});
+ %io:format(F, "Debloquage !~n", []),
+ %file:close(F);
+ %~ {tcp_closed, _} ->
+ %~ mnesia:unsubscribe({table, minichat, simple});
+ _ ->
+ %io:format(F, "~p~n", [M]),
+ attends_nouveaux_messages2()
+ % 60 minutes de timeout (le cas ou il n'y a que des consultations et jamais de post)
+ % Après 60 minutes de connexion, le client doit donc reétablir une connexion
+ % TODO : pour être mieux : quand le socket se ferme alors un message devrait être envoyé et débloquer ce receive (demande en cours sur la mailing list de yaws)
+ after 1000 * 60 * 60 ->
+ mnesia:unsubscribe({table, minichat, simple})
+ end.
+
+
+
+
+
\ No newline at end of file
projects / euphorik.git / commitdiff