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Clean mod_mam.erl from DB specific code

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This commit is contained in:
Evgeniy Khramtsov 2016-04-15 15:11:31 +03:00
parent 901d2e0aed
commit 52571e8624
4 changed files with 561 additions and 477 deletions
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541
src/mod_mam.erl
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@ -35,41 +35,37 @@
-export([user_send_packet/4, user_receive_packet/5,
process_iq_v0_2/3, process_iq_v0_3/3, disco_sm_features/5,
remove_user/2, remove_user/3, mod_opt_type/1, muc_process_iq/4,
remove_user/2, remove_room/3, mod_opt_type/1, muc_process_iq/4,
muc_filter_message/5, message_is_archived/5, delete_old_messages/2,
get_commands_spec/0]).
get_commands_spec/0, msg_to_el/4]).
-include_lib("stdlib/include/ms_transform.hrl").
-include("jlib.hrl").
-include("logger.hrl").
-include("mod_muc_room.hrl").
-include("ejabberd_commands.hrl").
-include("mod_mam.hrl").
-define(DEF_PAGE_SIZE, 50).
-define(MAX_PAGE_SIZE, 250).
-define(BIN_GREATER_THAN(A, B),
((A > B andalso byte_size(A) == byte_size(B))
orelse byte_size(A) > byte_size(B))).
-define(BIN_LESS_THAN(A, B),
((A < B andalso byte_size(A) == byte_size(B))
orelse byte_size(A) < byte_size(B))).
-record(archive_msg,
{us = {<<"">>, <<"">>} :: {binary(), binary()} | '$2',
id = <<>> :: binary() | '_',
timestamp = p1_time_compat:timestamp() :: erlang:timestamp() | '_' | '$1',
peer = {<<"">>, <<"">>, <<"">>} :: ljid() | '_' | '$3' | undefined,
bare_peer = {<<"">>, <<"">>, <<"">>} :: ljid() | '_' | '$3',
packet = #xmlel{} :: xmlel() | '_',
nick = <<"">> :: binary(),
type = chat :: chat | groupchat}).
-record(archive_prefs,
{us = {<<"">>, <<"">>} :: {binary(), binary()},
default = never :: never | always | roster,
always = [] :: [ljid()],
never = [] :: [ljid()]}).
-callback init(binary(), gen_mod:opts()) -> any().
-callback remove_user(binary(), binary()) -> any().
-callback remove_room(binary(), binary(), binary()) -> any().
-callback delete_old_messages(binary() | global,
erlang:timestamp(),
all | chat | groupchat) -> any().
-callback extended_fields() -> [xmlel()].
-callback store(xmlel(), binary(), {binary(), binary()}, chat | groupchat,
jid(), binary(), recv | send) -> {ok, binary()} | any().
-callback write_prefs(binary(), binary(), #archive_prefs{}, binary()) -> ok | any().
-callback get_prefs(binary(), binary()) -> {ok, #archive_prefs{}} | error.
-callback select(binary(), jid(), jid(),
none | erlang:timestamp(),
none | erlang:timestamp(),
none | ljid() | {text, binary()},
none | #rsm_in{},
chat | groupchat) ->
{[{binary(), non_neg_integer(), xmlel()}], boolean(), non_neg_integer()}.
%%%===================================================================
%%% API
@ -77,9 +73,9 @@
start(Host, Opts) ->
IQDisc = gen_mod:get_opt(iqdisc, Opts, fun gen_iq_handler:check_type/1,
one_queue),
DBType = gen_mod:db_type(Host, Opts),
init_db(DBType, Host),
init_cache(DBType, Opts),
Mod = gen_mod:db_mod(Host, Opts, ?MODULE),
Mod:init(Host, Opts),
init_cache(Opts),
gen_iq_handler:add_iq_handler(ejabberd_local, Host,
?NS_MAM_TMP, ?MODULE, process_iq_v0_2, IQDisc),
gen_iq_handler:add_iq_handler(ejabberd_sm, Host,
@ -120,18 +116,7 @@ start(Host, Opts) ->
ejabberd_commands:register_commands(get_commands_spec()),
ok.
init_db(mnesia, _Host) ->
mnesia:create_table(archive_msg,
[{disc_only_copies, [node()]},
{type, bag},
{attributes, record_info(fields, archive_msg)}]),
mnesia:create_table(archive_prefs,
[{disc_only_copies, [node()]},
{attributes, record_info(fields, archive_prefs)}]);
init_db(_, _) ->
ok.
init_cache(_DBType, Opts) ->
init_cache(Opts) ->
MaxSize = gen_mod:get_opt(cache_size, Opts,
fun(I) when is_integer(I), I>0 -> I end,
1000),
@ -179,24 +164,14 @@ stop(Host) ->
remove_user(User, Server) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
remove_user(LUser, LServer,
gen_mod:db_type(LServer, ?MODULE)).
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:remove_user(LUser, LServer).
remove_user(LUser, LServer, mnesia) ->
US = {LUser, LServer},
F = fun () ->
mnesia:delete({archive_msg, US}),
mnesia:delete({archive_prefs, US})
end,
mnesia:transaction(F);
remove_user(LUser, LServer, odbc) ->
SUser = ejabberd_odbc:escape(LUser),
ejabberd_odbc:sql_query(
LServer,
[<<"delete from archive where username='">>, SUser, <<"';">>]),
ejabberd_odbc:sql_query(
LServer,
[<<"delete from archive_prefs where username='">>, SUser, <<"';">>]).
remove_room(LServer, Name, Host) ->
LName = jid:nodeprep(Name),
LHost = jid:nameprep(Host),
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:remove_room(LServer, LName, LHost).
user_receive_packet(Pkt, C2SState, JID, Peer, To) ->
LUser = JID#jid.luser,
@ -343,10 +318,10 @@ message_is_archived(false, C2SState, Peer,
if_enabled ->
get_prefs(LUser, LServer);
on_request ->
DBType = gen_mod:db_type(LServer, ?MODULE),
Mod = gen_mod:db_mod(LServer, ?MODULE),
cache_tab:lookup(archive_prefs, {LUser, LServer},
fun() ->
get_prefs(LUser, LServer, DBType)
Mod:get_prefs(LUser, LServer)
end);
never ->
error
@ -365,21 +340,19 @@ delete_old_messages(TypeBin, Days) when TypeBin == <<"chat">>;
Diff = Days * 24 * 60 * 60 * 1000000,
TimeStamp = usec_to_now(p1_time_compat:system_time(micro_seconds) - Diff),
Type = jlib:binary_to_atom(TypeBin),
{Results, _} =
lists:foldl(fun(Host, {Results, MnesiaDone}) ->
case {gen_mod:db_type(Host, ?MODULE), MnesiaDone} of
{mnesia, true} ->
{Results, true};
{mnesia, false} ->
Res = delete_old_messages(TimeStamp, Type,
global, mnesia),
{[Res|Results], true};
{DBType, _} ->
Res = delete_old_messages(TimeStamp, Type,
Host, DBType),
{[Res|Results], MnesiaDone}
end
end, {[], false}, ?MYHOSTS),
DBTypes = lists:usort(
lists:map(
fun(Host) ->
case gen_mod:db_type(Host, ?MODULE) of
odbc -> {odbc, Host};
Other -> {Other, global}
end
end, ?MYHOSTS)),
Results = lists:map(
fun({DBType, ServerHost}) ->
Mod = gen_mod:db_mod(DBType, ?MODULE),
Mod:delete_old_messages(ServerHost, TimeStamp, Type)
end, DBTypes),
case lists:filter(fun(Res) -> Res /= ok end, Results) of
[] -> ok;
[NotOk|_] -> NotOk
@ -387,21 +360,6 @@ delete_old_messages(TypeBin, Days) when TypeBin == <<"chat">>;
delete_old_messages(_TypeBin, _Days) ->
unsupported_type.
delete_old_messages(TimeStamp, Type, global, mnesia) ->
MS = ets:fun2ms(fun(#archive_msg{timestamp = MsgTS,
type = MsgType} = Msg)
when MsgTS < TimeStamp,
MsgType == Type orelse Type == all ->
Msg
end),
OldMsgs = mnesia:dirty_select(archive_msg, MS),
lists:foreach(fun(Rec) ->
ok = mnesia:dirty_delete_object(Rec)
end, OldMsgs);
delete_old_messages(_TimeStamp, _Type, _Host, _DBType) ->
%% TODO
not_implemented.
%%%===================================================================
%%% Internal functions
%%%===================================================================
@ -427,15 +385,9 @@ process_iq(LServer, #iq{sub_el = #xmlel{attrs = Attrs}} = IQ) ->
#xmlel{name = <<"field">>,
attrs = [{<<"type">>, <<"text-single">>},
{<<"var">>, <<"end">>}]}],
Fields = case gen_mod:db_type(LServer, ?MODULE) of
odbc ->
WithText = #xmlel{name = <<"field">>,
attrs = [{<<"type">>, <<"text-single">>},
{<<"var">>, <<"withtext">>}]},
[WithText|CommonFields];
_ ->
CommonFields
end,
Mod = gen_mod:db_mod(LServer, ?MODULE),
ExtendedFields = Mod:extended_fields(),
Fields = ExtendedFields ++ CommonFields,
Form = #xmlel{name = <<"x">>,
attrs = [{<<"xmlns">>, ?NS_XDATA}, {<<"type">>, <<"form">>}],
children = Fields},
@ -715,8 +667,8 @@ store_msg(C2SState, Pkt, LUser, LServer, Peer, Dir) ->
case should_archive_peer(C2SState, Prefs, Peer) of
true ->
US = {LUser, LServer},
store(Pkt, LServer, US, chat, Peer, <<"">>, Dir,
gen_mod:db_type(LServer, ?MODULE));
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:store(Pkt, LServer, US, chat, Peer, <<"">>, Dir);
false ->
pass
end.
@ -726,101 +678,26 @@ store_muc(MUCState, Pkt, RoomJID, Peer, Nick) ->
true ->
LServer = MUCState#state.server_host,
{U, S, _} = jid:tolower(RoomJID),
store(Pkt, LServer, {U, S}, groupchat, Peer, Nick, recv,
gen_mod:db_type(LServer, ?MODULE));
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:store(Pkt, LServer, {U, S}, groupchat, Peer, Nick, recv);
false ->
pass
end.
store(Pkt, _, {LUser, LServer}, Type, Peer, Nick, _Dir, mnesia) ->
LPeer = {PUser, PServer, _} = jid:tolower(Peer),
TS = p1_time_compat:timestamp(),
ID = jlib:integer_to_binary(now_to_usec(TS)),
case mnesia:dirty_write(
#archive_msg{us = {LUser, LServer},
id = ID,
timestamp = TS,
peer = LPeer,
bare_peer = {PUser, PServer, <<>>},
type = Type,
nick = Nick,
packet = Pkt}) of
ok ->
{ok, ID};
Err ->
Err
end;
store(Pkt, LServer, {LUser, LHost}, Type, Peer, Nick, _Dir, odbc) ->
TSinteger = p1_time_compat:system_time(micro_seconds),
ID = TS = jlib:integer_to_binary(TSinteger),
SUser = case Type of
chat -> LUser;
groupchat -> jid:to_string({LUser, LHost, <<>>})
end,
BarePeer = jid:to_string(
jid:tolower(
jid:remove_resource(Peer))),
LPeer = jid:to_string(
jid:tolower(Peer)),
XML = fxml:element_to_binary(Pkt),
Body = fxml:get_subtag_cdata(Pkt, <<"body">>),
case ejabberd_odbc:sql_query(
LServer,
[<<"insert into archive (username, timestamp, "
"peer, bare_peer, xml, txt, kind, nick) values (">>,
<<"'">>, ejabberd_odbc:escape(SUser), <<"', ">>,
<<"'">>, TS, <<"', ">>,
<<"'">>, ejabberd_odbc:escape(LPeer), <<"', ">>,
<<"'">>, ejabberd_odbc:escape(BarePeer), <<"', ">>,
<<"'">>, ejabberd_odbc:escape(XML), <<"', ">>,
<<"'">>, ejabberd_odbc:escape(Body), <<"', ">>,
<<"'">>, jlib:atom_to_binary(Type), <<"', ">>,
<<"'">>, ejabberd_odbc:escape(Nick), <<"');">>]) of
{updated, _} ->
{ok, ID};
Err ->
Err
end.
write_prefs(LUser, LServer, Host, Default, Always, Never) ->
DBType = case gen_mod:db_type(Host, ?MODULE) of
odbc -> {odbc, Host};
DB -> DB
end,
Prefs = #archive_prefs{us = {LUser, LServer},
default = Default,
always = Always,
never = Never},
Mod = gen_mod:db_mod(Host, ?MODULE),
cache_tab:dirty_insert(
archive_prefs, {LUser, LServer}, Prefs,
fun() -> write_prefs(LUser, LServer, Prefs, DBType) end).
write_prefs(_LUser, _LServer, Prefs, mnesia) ->
mnesia:dirty_write(Prefs);
write_prefs(LUser, _LServer, #archive_prefs{default = Default,
never = Never,
always = Always},
{odbc, Host}) ->
SUser = ejabberd_odbc:escape(LUser),
SDefault = erlang:atom_to_binary(Default, utf8),
SAlways = ejabberd_odbc:encode_term(Always),
SNever = ejabberd_odbc:encode_term(Never),
case update(Host, <<"archive_prefs">>,
[<<"username">>, <<"def">>, <<"always">>, <<"never">>],
[SUser, SDefault, SAlways, SNever],
[<<"username='">>, SUser, <<"'">>]) of
{updated, _} ->
ok;
Err ->
Err
end.
fun() -> Mod:write_prefs(LUser, LServer, Prefs, Host) end).
get_prefs(LUser, LServer) ->
DBType = gen_mod:db_type(LServer, ?MODULE),
Mod = gen_mod:db_mod(LServer, ?MODULE),
Res = cache_tab:lookup(archive_prefs, {LUser, LServer},
fun() -> get_prefs(LUser, LServer,
DBType)
end),
fun() -> Mod:get_prefs(LUser, LServer) end),
case Res of
{ok, Prefs} ->
Prefs;
@ -842,31 +719,6 @@ get_prefs(LUser, LServer) ->
end
end.
get_prefs(LUser, LServer, mnesia) ->
case mnesia:dirty_read(archive_prefs, {LUser, LServer}) of
[Prefs] ->
{ok, Prefs};
_ ->
error
end;
get_prefs(LUser, LServer, odbc) ->
case ejabberd_odbc:sql_query(
LServer,
[<<"select def, always, never from archive_prefs ">>,
<<"where username='">>,
ejabberd_odbc:escape(LUser), <<"';">>]) of
{selected, _, [[SDefault, SAlways, SNever]]} ->
Default = erlang:binary_to_existing_atom(SDefault, utf8),
Always = ejabberd_odbc:decode_term(SAlways),
Never = ejabberd_odbc:decode_term(SNever),
{ok, #archive_prefs{us = {LUser, LServer},
default = Default,
always = Always,
never = Never}};
_ ->
error
end.
prefs_el(Default, Always, Never, NS) ->
Default1 = jlib:atom_to_binary(Default),
JFun = fun(L) ->
@ -890,11 +742,10 @@ maybe_activate_mam(LUser, LServer) ->
false),
case ActivateOpt of
true ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Res = cache_tab:lookup(archive_prefs, {LUser, LServer},
fun() ->
get_prefs(LUser, LServer,
gen_mod:db_type(LServer,
?MODULE))
Mod:get_prefs(LUser, LServer)
end),
case Res of
{ok, _Prefs} ->
@ -912,31 +763,22 @@ maybe_activate_mam(LUser, LServer) ->
end.
select_and_send(LServer, From, To, Start, End, With, RSM, IQ, MsgType) ->
DBType = case gen_mod:db_type(LServer, ?MODULE) of
odbc -> {odbc, LServer};
DB -> DB
end,
select_and_send(LServer, From, To, Start, End, With, RSM, IQ,
MsgType, DBType).
select_and_send(LServer, From, To, Start, End, With, RSM, IQ, MsgType, DBType) ->
{Msgs, IsComplete, Count} = select_and_start(LServer, From, To, Start, End,
With, RSM, MsgType, DBType),
With, RSM, MsgType),
SortedMsgs = lists:keysort(2, Msgs),
send(From, To, SortedMsgs, RSM, Count, IsComplete, IQ).
select_and_start(LServer, From, To, Start, End, With, RSM, MsgType, DBType) ->
select_and_start(LServer, From, To, Start, End, With, RSM, MsgType) ->
case MsgType of
chat ->
select(LServer, From, From, Start, End, With, RSM, MsgType, DBType);
select(LServer, From, From, Start, End, With, RSM, MsgType);
{groupchat, _Role, _MUCState} ->
select(LServer, From, To, Start, End, With, RSM, MsgType, DBType)
select(LServer, From, To, Start, End, With, RSM, MsgType)
end.
select(_LServer, JidRequestor, JidArchive, Start, End, _With, RSM,
{groupchat, _Role, #state{config = #config{mam = false},
history = History}} = MsgType,
_DBType) ->
history = History}} = MsgType) ->
#lqueue{len = L, queue = Q} = History,
{Msgs0, _} =
lists:mapfoldl(
@ -970,81 +812,9 @@ select(_LServer, JidRequestor, JidArchive, Start, End, _With, RSM,
_ ->
{Msgs, true, L}
end;
select(_LServer, JidRequestor,
#jid{luser = LUser, lserver = LServer} = JidArchive,
Start, End, With, RSM, MsgType, mnesia) ->
MS = make_matchspec(LUser, LServer, Start, End, With),
Msgs = mnesia:dirty_select(archive_msg, MS),
SortedMsgs = lists:keysort(#archive_msg.timestamp, Msgs),
{FilteredMsgs, IsComplete} = filter_by_rsm(SortedMsgs, RSM),
Count = length(Msgs),
{lists:map(
fun(Msg) ->
{Msg#archive_msg.id,
jlib:binary_to_integer(Msg#archive_msg.id),
msg_to_el(Msg, MsgType, JidRequestor, JidArchive)}
end, FilteredMsgs), IsComplete, Count};
select(LServer, JidRequestor, #jid{luser = LUser} = JidArchive,
Start, End, With, RSM, MsgType, {odbc, Host}) ->
User = case MsgType of
chat -> LUser;
{groupchat, _Role, _MUCState} -> jid:to_string(JidArchive)
end,
{Query, CountQuery} = make_sql_query(User, LServer,
Start, End, With, RSM),
% TODO from XEP-0313 v0.2: "To conserve resources, a server MAY place a
% reasonable limit on how many stanzas may be pushed to a client in one
% request. If a query returns a number of stanzas greater than this limit
% and the client did not specify a limit using RSM then the server should
% return a policy-violation error to the client." We currently don't do this
% for v0.2 requests, but we do limit #rsm_in.max for v0.3 and newer.
case {ejabberd_odbc:sql_query(Host, Query),
ejabberd_odbc:sql_query(Host, CountQuery)} of
{{selected, _, Res}, {selected, _, [[Count]]}} ->
{Max, Direction} = case RSM of
#rsm_in{max = M, direction = D} -> {M, D};
_ -> {undefined, undefined}
end,
{Res1, IsComplete} =
if Max >= 0 andalso Max /= undefined andalso length(Res) > Max ->
if Direction == before ->
{lists:nthtail(1, Res), false};
true ->
{lists:sublist(Res, Max), false}
end;
true ->
{Res, true}
end,
{lists:flatmap(
fun([TS, XML, PeerBin, Kind, Nick]) ->
try
#xmlel{} = El = fxml_stream:parse_element(XML),
Now = usec_to_now(jlib:binary_to_integer(TS)),
PeerJid = jid:tolower(jid:from_string(PeerBin)),
T = case Kind of
<<"">> -> chat;
null -> chat;
_ -> jlib:binary_to_atom(Kind)
end,
[{TS, jlib:binary_to_integer(TS),
msg_to_el(#archive_msg{timestamp = Now,
packet = El,
type = T,
nick = Nick,
peer = PeerJid},
MsgType, JidRequestor, JidArchive)}]
catch _:Err ->
?ERROR_MSG("failed to parse data from SQL: ~p. "
"The data was: "
"timestamp = ~s, xml = ~s, "
"peer = ~s, kind = ~s, nick = ~s",
[Err, TS, XML, PeerBin, Kind, Nick]),
[]
end
end, Res1), IsComplete, jlib:binary_to_integer(Count)};
_ ->
{[], false, 0}
end.
select(LServer, From, From, Start, End, With, RSM, MsgType) ->
Mod = gen_mod:db_mod(LServer, ?MODULE),
Mod:select(LServer, From, From, Start, End, With, RSM, MsgType).
msg_to_el(#archive_msg{timestamp = TS, packet = Pkt1, nick = Nick, peer = Peer},
MsgType, JidRequestor, #jid{lserver = LServer} = JidArchive) ->
@ -1160,7 +930,6 @@ send(From, To, Msgs, RSM, Count, IsComplete, #iq{sub_el = SubEl} = IQ) ->
ignore
end.
make_rsm_out([], _, Count, Attrs, NS) ->
Tag = if NS == ?NS_MAM_TMP -> <<"query">>;
true -> <<"fin">>
@ -1177,32 +946,6 @@ make_rsm_out([{FirstID, _, _}|_] = Msgs, _, Count, Attrs, NS) ->
#rsm_out{first = FirstID, count = Count,
last = LastID})}].
filter_by_rsm(Msgs, none) ->
{Msgs, true};
filter_by_rsm(_Msgs, #rsm_in{max = Max}) when Max < 0 ->
{[], true};
filter_by_rsm(Msgs, #rsm_in{max = Max, direction = Direction, id = ID}) ->
NewMsgs = case Direction of
aft when ID /= <<"">> ->
lists:filter(
fun(#archive_msg{id = I}) ->
?BIN_GREATER_THAN(I, ID)
end, Msgs);
before when ID /= <<"">> ->
lists:foldl(
fun(#archive_msg{id = I} = Msg, Acc)
when ?BIN_LESS_THAN(I, ID) ->
[Msg|Acc];
(_, Acc) ->
Acc
end, [], Msgs);
before when ID == <<"">> ->
lists:reverse(Msgs);
_ ->
Msgs
end,
filter_by_max(NewMsgs, Max).
filter_by_max(Msgs, undefined) ->
{Msgs, true};
filter_by_max(Msgs, Len) when is_integer(Len), Len >= 0 ->
@ -1231,126 +974,6 @@ match_rsm(Now, #rsm_in{id = ID, direction = before}) when ID /= <<"">> ->
match_rsm(_Now, _) ->
true.
make_matchspec(LUser, LServer, Start, End, {_, _, <<>>} = With) ->
ets:fun2ms(
fun(#archive_msg{timestamp = TS,
us = US,
bare_peer = BPeer} = Msg)
when Start =< TS, End >= TS,
US == {LUser, LServer},
BPeer == With ->
Msg
end);
make_matchspec(LUser, LServer, Start, End, {_, _, _} = With) ->
ets:fun2ms(
fun(#archive_msg{timestamp = TS,
us = US,
peer = Peer} = Msg)
when Start =< TS, End >= TS,
US == {LUser, LServer},
Peer == With ->
Msg
end);
make_matchspec(LUser, LServer, Start, End, none) ->
ets:fun2ms(
fun(#archive_msg{timestamp = TS,
us = US,
peer = Peer} = Msg)
when Start =< TS, End >= TS,
US == {LUser, LServer} ->
Msg
end).
make_sql_query(User, LServer, Start, End, With, RSM) ->
{Max, Direction, ID} = case RSM of
#rsm_in{} ->
{RSM#rsm_in.max,
RSM#rsm_in.direction,
RSM#rsm_in.id};
none ->
{none, none, <<>>}
end,
ODBCType = ejabberd_config:get_option(
{odbc_type, LServer},
ejabberd_odbc:opt_type(odbc_type)),
LimitClause = if is_integer(Max), Max >= 0, ODBCType /= mssql ->
[<<" limit ">>, jlib:integer_to_binary(Max+1)];
true ->
[]
end,
TopClause = if is_integer(Max), Max >= 0, ODBCType == mssql ->
[<<" TOP ">>, jlib:integer_to_binary(Max+1)];
true ->
[]
end,
WithClause = case With of
{text, <<>>} ->
[];
{text, Txt} ->
[<<" and match (txt) against ('">>,
ejabberd_odbc:escape(Txt), <<"')">>];
{_, _, <<>>} ->
[<<" and bare_peer='">>,
ejabberd_odbc:escape(jid:to_string(With)),
<<"'">>];
{_, _, _} ->
[<<" and peer='">>,
ejabberd_odbc:escape(jid:to_string(With)),
<<"'">>];
none ->
[]
end,
PageClause = case catch jlib:binary_to_integer(ID) of
I when is_integer(I), I >= 0 ->
case Direction of
before ->
[<<" AND timestamp < ">>, ID];
aft ->
[<<" AND timestamp > ">>, ID];
_ ->
[]
end;
_ ->
[]
end,
StartClause = case Start of
{_, _, _} ->
[<<" and timestamp >= ">>,
jlib:integer_to_binary(now_to_usec(Start))];
_ ->
[]
end,
EndClause = case End of
{_, _, _} ->
[<<" and timestamp <= ">>,
jlib:integer_to_binary(now_to_usec(End))];
_ ->
[]
end,
SUser = ejabberd_odbc:escape(User),
Query = [<<"SELECT ">>, TopClause, <<" timestamp, xml, peer, kind, nick"
" FROM archive WHERE username='">>,
SUser, <<"'">>, WithClause, StartClause, EndClause,
PageClause],
QueryPage =
case Direction of
before ->
% ID can be empty because of
% XEP-0059: Result Set Management
% 2.5 Requesting the Last Page in a Result Set
[<<"SELECT timestamp, xml, peer, kind, nick FROM (">>, Query,
<<" ORDER BY timestamp DESC ">>,
LimitClause, <<") AS t ORDER BY timestamp ASC;">>];
_ ->
[Query, <<" ORDER BY timestamp ASC ">>,
LimitClause, <<";">>]
end,
{QueryPage,
[<<"SELECT COUNT(*) FROM archive WHERE username='">>,
SUser, <<"'">>, WithClause, StartClause, EndClause, <<";">>]}.
now_to_usec({MSec, Sec, USec}) ->
(MSec*1000000 + Sec)*1000000 + USec.
@ -1376,28 +999,6 @@ get_jids(Els) ->
[]
end, Els).
update(LServer, Table, Fields, Vals, Where) ->
UPairs = lists:zipwith(fun (A, B) ->
<<A/binary, "='", B/binary, "'">>
end,
Fields, Vals),
case ejabberd_odbc:sql_query(LServer,
[<<"update ">>, Table, <<" set ">>,
join(UPairs, <<", ">>), <<" where ">>, Where,
<<";">>])
of
{updated, 1} -> {updated, 1};
_ ->
ejabberd_odbc:sql_query(LServer,
[<<"insert into ">>, Table, <<"(">>,
join(Fields, <<", ">>), <<") values ('">>,
join(Vals, <<"', '">>), <<"');">>])
end.
%% Almost a copy of string:join/2.
join([], _Sep) -> [];
join([H | T], Sep) -> [H, [[Sep, X] || X <- T]].
get_commands_spec() ->
[#ejabberd_commands{name = delete_old_mam_messages, tags = [purge],
desc = "Delete MAM messages older than DAYS",
@ -1416,7 +1017,11 @@ mod_opt_type(cache_life_time) ->
fun (I) when is_integer(I), I > 0 -> I end;
mod_opt_type(cache_size) ->
fun (I) when is_integer(I), I > 0 -> I end;
mod_opt_type(db_type) -> fun gen_mod:v_db/1;
mod_opt_type(db_type) ->
fun(odbc) -> odbc;
(internal) -> mnesia;
(mnesia) -> mnesia
end;
mod_opt_type(default) ->
fun (always) -> always;
(never) -> never;

178
src/mod_mam_mnesia.erl Normal file
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@ -0,0 +1,178 @@
%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 15 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_mam_mnesia).
-behaviour(mod_mam).
%% API
-export([init/2, remove_user/2, remove_room/3, delete_old_messages/3,
extended_fields/0, store/7, write_prefs/4, get_prefs/2, select/8]).
-include_lib("stdlib/include/ms_transform.hrl").
-include("jlib.hrl").
-include("mod_mam.hrl").
-define(BIN_GREATER_THAN(A, B),
((A > B andalso byte_size(A) == byte_size(B))
orelse byte_size(A) > byte_size(B))).
-define(BIN_LESS_THAN(A, B),
((A < B andalso byte_size(A) == byte_size(B))
orelse byte_size(A) < byte_size(B))).
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
mnesia:create_table(archive_msg,
[{disc_only_copies, [node()]},
{type, bag},
{attributes, record_info(fields, archive_msg)}]),
mnesia:create_table(archive_prefs,
[{disc_only_copies, [node()]},
{attributes, record_info(fields, archive_prefs)}]).
remove_user(LUser, LServer) ->
US = {LUser, LServer},
F = fun () ->
mnesia:delete({archive_msg, US}),
mnesia:delete({archive_prefs, US})
end,
mnesia:transaction(F).
remove_room(_LServer, LName, LHost) ->
remove_user(LName, LHost).
delete_old_messages(global, TimeStamp, Type) ->
MS = ets:fun2ms(fun(#archive_msg{timestamp = MsgTS,
type = MsgType} = Msg)
when MsgTS < TimeStamp,
MsgType == Type orelse Type == all ->
Msg
end),
OldMsgs = mnesia:dirty_select(archive_msg, MS),
lists:foreach(fun(Rec) ->
ok = mnesia:dirty_delete_object(Rec)
end, OldMsgs).
extended_fields() ->
[].
store(Pkt, _, {LUser, LServer}, Type, Peer, Nick, _Dir) ->
LPeer = {PUser, PServer, _} = jid:tolower(Peer),
TS = p1_time_compat:timestamp(),
ID = jlib:integer_to_binary(now_to_usec(TS)),
case mnesia:dirty_write(
#archive_msg{us = {LUser, LServer},
id = ID,
timestamp = TS,
peer = LPeer,
bare_peer = {PUser, PServer, <<>>},
type = Type,
nick = Nick,
packet = Pkt}) of
ok ->
{ok, ID};
Err ->
Err
end.
write_prefs(_LUser, _LServer, Prefs, _ServerHost) ->
mnesia:dirty_write(Prefs).
get_prefs(LUser, LServer) ->
case mnesia:dirty_read(archive_prefs, {LUser, LServer}) of
[Prefs] ->
{ok, Prefs};
_ ->
error
end.
select(_LServer, JidRequestor,
#jid{luser = LUser, lserver = LServer} = JidArchive,
Start, End, With, RSM, MsgType) ->
MS = make_matchspec(LUser, LServer, Start, End, With),
Msgs = mnesia:dirty_select(archive_msg, MS),
SortedMsgs = lists:keysort(#archive_msg.timestamp, Msgs),
{FilteredMsgs, IsComplete} = filter_by_rsm(SortedMsgs, RSM),
Count = length(Msgs),
{lists:map(
fun(Msg) ->
{Msg#archive_msg.id,
jlib:binary_to_integer(Msg#archive_msg.id),
mod_mam:msg_to_el(Msg, MsgType, JidRequestor, JidArchive)}
end, FilteredMsgs), IsComplete, Count}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
now_to_usec({MSec, Sec, USec}) ->
(MSec*1000000 + Sec)*1000000 + USec.
make_matchspec(LUser, LServer, Start, End, {_, _, <<>>} = With) ->
ets:fun2ms(
fun(#archive_msg{timestamp = TS,
us = US,
bare_peer = BPeer} = Msg)
when Start =< TS, End >= TS,
US == {LUser, LServer},
BPeer == With ->
Msg
end);
make_matchspec(LUser, LServer, Start, End, {_, _, _} = With) ->
ets:fun2ms(
fun(#archive_msg{timestamp = TS,
us = US,
peer = Peer} = Msg)
when Start =< TS, End >= TS,
US == {LUser, LServer},
Peer == With ->
Msg
end);
make_matchspec(LUser, LServer, Start, End, none) ->
ets:fun2ms(
fun(#archive_msg{timestamp = TS,
us = US,
peer = Peer} = Msg)
when Start =< TS, End >= TS,
US == {LUser, LServer} ->
Msg
end).
filter_by_rsm(Msgs, none) ->
{Msgs, true};
filter_by_rsm(_Msgs, #rsm_in{max = Max}) when Max < 0 ->
{[], true};
filter_by_rsm(Msgs, #rsm_in{max = Max, direction = Direction, id = ID}) ->
NewMsgs = case Direction of
aft when ID /= <<"">> ->
lists:filter(
fun(#archive_msg{id = I}) ->
?BIN_GREATER_THAN(I, ID)
end, Msgs);
before when ID /= <<"">> ->
lists:foldl(
fun(#archive_msg{id = I} = Msg, Acc)
when ?BIN_LESS_THAN(I, ID) ->
[Msg|Acc];
(_, Acc) ->
Acc
end, [], Msgs);
before when ID == <<"">> ->
lists:reverse(Msgs);
_ ->
Msgs
end,
filter_by_max(NewMsgs, Max).
filter_by_max(Msgs, undefined) ->
{Msgs, true};
filter_by_max(Msgs, Len) when is_integer(Len), Len >= 0 ->
{lists:sublist(Msgs, Len), length(Msgs) =< Len};
filter_by_max(_Msgs, _Junk) ->
{[], true}.

309
src/mod_mam_sql.erl Normal file
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@ -0,0 +1,309 @@
%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 15 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_mam_sql).
-behaviour(mod_mam).
%% API
-export([init/2, remove_user/2, remove_room/3, delete_old_messages/3,
extended_fields/0, store/7, write_prefs/4, get_prefs/2, select/8]).
-include_lib("stdlib/include/ms_transform.hrl").
-include("jlib.hrl").
-include("mod_mam.hrl").
-include("logger.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
remove_user(LUser, LServer) ->
SUser = ejabberd_odbc:escape(LUser),
ejabberd_odbc:sql_query(
LServer,
[<<"delete from archive where username='">>, SUser, <<"';">>]),
ejabberd_odbc:sql_query(
LServer,
[<<"delete from archive_prefs where username='">>, SUser, <<"';">>]).
remove_room(LServer, LName, LHost) ->
LUser = jid:to_string({LName, LHost, <<>>}),
remove_user(LUser, LServer).
delete_old_messages(ServerHost, TimeStamp, Type) ->
TypeClause = if Type == all -> <<"">>;
true -> [<<" and kind='">>, jlib:atom_to_binary(Type), <<"'">>]
end,
TS = integer_to_binary(now_to_usec(TimeStamp)),
ejabberd_odbc:sql_query(
ServerHost, [<<"delete from archive where timestamp<">>,
TS, TypeClause, <<";">>]),
ok.
extended_fields() ->
[#xmlel{name = <<"field">>,
attrs = [{<<"type">>, <<"text-single">>},
{<<"var">>, <<"withtext">>}]}].
store(Pkt, LServer, {LUser, LHost}, Type, Peer, Nick, _Dir) ->
TSinteger = p1_time_compat:system_time(micro_seconds),
ID = TS = jlib:integer_to_binary(TSinteger),
SUser = case Type of
chat -> LUser;
groupchat -> jid:to_string({LUser, LHost, <<>>})
end,
BarePeer = jid:to_string(
jid:tolower(
jid:remove_resource(Peer))),
LPeer = jid:to_string(
jid:tolower(Peer)),
XML = fxml:element_to_binary(Pkt),
Body = fxml:get_subtag_cdata(Pkt, <<"body">>),
case ejabberd_odbc:sql_query(
LServer,
[<<"insert into archive (username, timestamp, "
"peer, bare_peer, xml, txt, kind, nick) values (">>,
<<"'">>, ejabberd_odbc:escape(SUser), <<"', ">>,
<<"'">>, TS, <<"', ">>,
<<"'">>, ejabberd_odbc:escape(LPeer), <<"', ">>,
<<"'">>, ejabberd_odbc:escape(BarePeer), <<"', ">>,
<<"'">>, ejabberd_odbc:escape(XML), <<"', ">>,
<<"'">>, ejabberd_odbc:escape(Body), <<"', ">>,
<<"'">>, jlib:atom_to_binary(Type), <<"', ">>,
<<"'">>, ejabberd_odbc:escape(Nick), <<"');">>]) of
{updated, _} ->
{ok, ID};
Err ->
Err
end.
write_prefs(LUser, _LServer, #archive_prefs{default = Default,
never = Never,
always = Always},
ServerHost) ->
SUser = ejabberd_odbc:escape(LUser),
SDefault = erlang:atom_to_binary(Default, utf8),
SAlways = ejabberd_odbc:encode_term(Always),
SNever = ejabberd_odbc:encode_term(Never),
case update(ServerHost, <<"archive_prefs">>,
[<<"username">>, <<"def">>, <<"always">>, <<"never">>],
[SUser, SDefault, SAlways, SNever],
[<<"username='">>, SUser, <<"'">>]) of
{updated, _} ->
ok;
Err ->
Err
end.
get_prefs(LUser, LServer) ->
case ejabberd_odbc:sql_query(
LServer,
[<<"select def, always, never from archive_prefs ">>,
<<"where username='">>,
ejabberd_odbc:escape(LUser), <<"';">>]) of
{selected, _, [[SDefault, SAlways, SNever]]} ->
Default = erlang:binary_to_existing_atom(SDefault, utf8),
Always = ejabberd_odbc:decode_term(SAlways),
Never = ejabberd_odbc:decode_term(SNever),
{ok, #archive_prefs{us = {LUser, LServer},
default = Default,
always = Always,
never = Never}};
_ ->
error
end.
select(LServer, JidRequestor, #jid{luser = LUser} = JidArchive,
Start, End, With, RSM, MsgType) ->
User = case MsgType of
chat -> LUser;
{groupchat, _Role, _MUCState} -> jid:to_string(JidArchive)
end,
{Query, CountQuery} = make_sql_query(User, LServer,
Start, End, With, RSM),
% TODO from XEP-0313 v0.2: "To conserve resources, a server MAY place a
% reasonable limit on how many stanzas may be pushed to a client in one
% request. If a query returns a number of stanzas greater than this limit
% and the client did not specify a limit using RSM then the server should
% return a policy-violation error to the client." We currently don't do this
% for v0.2 requests, but we do limit #rsm_in.max for v0.3 and newer.
case {ejabberd_odbc:sql_query(LServer, Query),
ejabberd_odbc:sql_query(LServer, CountQuery)} of
{{selected, _, Res}, {selected, _, [[Count]]}} ->
{Max, Direction} = case RSM of
#rsm_in{max = M, direction = D} -> {M, D};
_ -> {undefined, undefined}
end,
{Res1, IsComplete} =
if Max >= 0 andalso Max /= undefined andalso length(Res) > Max ->
if Direction == before ->
{lists:nthtail(1, Res), false};
true ->
{lists:sublist(Res, Max), false}
end;
true ->
{Res, true}
end,
{lists:flatmap(
fun([TS, XML, PeerBin, Kind, Nick]) ->
try
#xmlel{} = El = fxml_stream:parse_element(XML),
Now = usec_to_now(jlib:binary_to_integer(TS)),
PeerJid = jid:tolower(jid:from_string(PeerBin)),
T = case Kind of
<<"">> -> chat;
null -> chat;
_ -> jlib:binary_to_atom(Kind)
end,
[{TS, jlib:binary_to_integer(TS),
mod_mam:msg_to_el(#archive_msg{timestamp = Now,
packet = El,
type = T,
nick = Nick,
peer = PeerJid},
MsgType, JidRequestor, JidArchive)}]
catch _:Err ->
?ERROR_MSG("failed to parse data from SQL: ~p. "
"The data was: "
"timestamp = ~s, xml = ~s, "
"peer = ~s, kind = ~s, nick = ~s",
[Err, TS, XML, PeerBin, Kind, Nick]),
[]
end
end, Res1), IsComplete, jlib:binary_to_integer(Count)};
_ ->
{[], false, 0}
end.
%%%===================================================================
%%% Internal functions
%%%===================================================================
now_to_usec({MSec, Sec, USec}) ->
(MSec*1000000 + Sec)*1000000 + USec.
usec_to_now(Int) ->
Secs = Int div 1000000,
USec = Int rem 1000000,
MSec = Secs div 1000000,
Sec = Secs rem 1000000,
{MSec, Sec, USec}.
make_sql_query(User, LServer, Start, End, With, RSM) ->
{Max, Direction, ID} = case RSM of
#rsm_in{} ->
{RSM#rsm_in.max,
RSM#rsm_in.direction,
RSM#rsm_in.id};
none ->
{none, none, <<>>}
end,
ODBCType = ejabberd_config:get_option(
{odbc_type, LServer},
ejabberd_odbc:opt_type(odbc_type)),
LimitClause = if is_integer(Max), Max >= 0, ODBCType /= mssql ->
[<<" limit ">>, jlib:integer_to_binary(Max+1)];
true ->
[]
end,
TopClause = if is_integer(Max), Max >= 0, ODBCType == mssql ->
[<<" TOP ">>, jlib:integer_to_binary(Max+1)];
true ->
[]
end,
WithClause = case With of
{text, <<>>} ->
[];
{text, Txt} ->
[<<" and match (txt) against ('">>,
ejabberd_odbc:escape(Txt), <<"')">>];
{_, _, <<>>} ->
[<<" and bare_peer='">>,
ejabberd_odbc:escape(jid:to_string(With)),
<<"'">>];
{_, _, _} ->
[<<" and peer='">>,
ejabberd_odbc:escape(jid:to_string(With)),
<<"'">>];
none ->
[]
end,
PageClause = case catch jlib:binary_to_integer(ID) of
I when is_integer(I), I >= 0 ->
case Direction of
before ->
[<<" AND timestamp < ">>, ID];
aft ->
[<<" AND timestamp > ">>, ID];
_ ->
[]
end;
_ ->
[]
end,
StartClause = case Start of
{_, _, _} ->
[<<" and timestamp >= ">>,
jlib:integer_to_binary(now_to_usec(Start))];
_ ->
[]
end,
EndClause = case End of
{_, _, _} ->
[<<" and timestamp <= ">>,
jlib:integer_to_binary(now_to_usec(End))];
_ ->
[]
end,
SUser = ejabberd_odbc:escape(User),
Query = [<<"SELECT ">>, TopClause, <<" timestamp, xml, peer, kind, nick"
" FROM archive WHERE username='">>,
SUser, <<"'">>, WithClause, StartClause, EndClause,
PageClause],
QueryPage =
case Direction of
before ->
% ID can be empty because of
% XEP-0059: Result Set Management
% 2.5 Requesting the Last Page in a Result Set
[<<"SELECT timestamp, xml, peer, kind, nick FROM (">>, Query,
<<" ORDER BY timestamp DESC ">>,
LimitClause, <<") AS t ORDER BY timestamp ASC;">>];
_ ->
[Query, <<" ORDER BY timestamp ASC ">>,
LimitClause, <<";">>]
end,
{QueryPage,
[<<"SELECT COUNT(*) FROM archive WHERE username='">>,
SUser, <<"'">>, WithClause, StartClause, EndClause, <<";">>]}.
update(LServer, Table, Fields, Vals, Where) ->
UPairs = lists:zipwith(fun (A, B) ->
<<A/binary, "='", B/binary, "'">>
end,
Fields, Vals),
case ejabberd_odbc:sql_query(LServer,
[<<"update ">>, Table, <<" set ">>,
join(UPairs, <<", ">>), <<" where ">>, Where,
<<";">>])
of
{updated, 1} -> {updated, 1};
_ ->
ejabberd_odbc:sql_query(LServer,
[<<"insert into ">>, Table, <<"(">>,
join(Fields, <<", ">>), <<") values ('">>,
join(Vals, <<"', '">>), <<"');">>])
end.
%% Almost a copy of string:join/2.
join([], _Sep) -> [];
join([H | T], Sep) -> [H, [[Sep, X] || X <- T]].

10
src/mod_muc.erl
View File

@ -154,15 +154,7 @@ forget_room(ServerHost, Host, Name) ->
remove_room_mam(LServer, Host, Name) ->
case gen_mod:is_loaded(LServer, mod_mam) of
true ->
U = jid:nodeprep(Name),
S = jid:nameprep(Host),
DBType = gen_mod:db_type(LServer, mod_mam),
if DBType == odbc ->
mod_mam:remove_user(jid:to_string({U, S, <<>>}),
LServer, DBType);
true ->
mod_mam:remove_user(U, S, DBType)
end;
mod_mam:remove_room(LServer, Name, Host);
false ->
ok
end.