Chapril/xmpp.chapril.org-ejabberd
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Fix mod_mam compatibility with RSM (only with odbc backend).

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This commit is contained in:
Jerome Sautret 2015-07-07 13:23:30 +02:00 committed by Evgeniy Khramtsov
parent a168340838
commit 1db65e3614
1 changed files with 57 additions and 37 deletions
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94
src/mod_mam.erl
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@ -550,6 +550,12 @@ select(#jid{luser = LUser, lserver = LServer} = JidRequestor,
Start, End, With, RSM, {odbc, Host}) ->
{Query, CountQuery} = make_sql_query(LUser, LServer,
Start, End, With, RSM),
% XXX TODO from XEP-0313:
% 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.
case {ejabberd_odbc:sql_query(Host, Query),
ejabberd_odbc:sql_query(Host, CountQuery)} of
{{selected, _, Res}, {selected, _, [[Count]]}} ->
@ -718,7 +724,7 @@ make_sql_query(LUser, _LServer, Start, End, With, RSM) ->
RSM#rsm_in.direction,
RSM#rsm_in.id};
none ->
{none, none, none}
{none, none, <<>>}
end,
LimitClause = if is_integer(Max), Max >= 0 ->
[<<" limit ">>, jlib:integer_to_binary(Max)];
@ -726,37 +732,35 @@ make_sql_query(LUser, _LServer, Start, End, With, RSM) ->
[]
end,
WithClause = case With of
{text, <<>>} ->
[];
{text, Txt} ->
[<<" and match (txt) against ('">>,
ejabberd_odbc:escape(Txt), <<"')">>];
{_, _, <<>>} ->
[<<" and bare_peer='">>,
ejabberd_odbc:escape(jlib:jid_to_string(With)),
<<"'">>];
{_, _, _} ->
[<<" and peer='">>,
ejabberd_odbc:escape(jlib:jid_to_string(With)),
<<"'">>];
none ->
[]
end,
DirectionClause = case catch jlib:binary_to_integer(ID) of
I when is_integer(I), I >= 0 ->
case Direction of
before ->
[<<" and timestamp < ">>, ID,
<<" order by timestamp desc">>];
aft ->
[<<" and timestamp > ">>, ID,
<<" order by timestamp asc">>];
_ ->
[]
end;
_ ->
[]
end,
{text, <<>>} ->
[];
{text, Txt} ->
[<<" and match (txt) against ('">>,
ejabberd_odbc:escape(Txt), <<"')">>];
{_, _, <<>>} ->
[<<" and bare_peer='">>,
ejabberd_odbc:escape(jlib:jid_to_string(With)),
<<"'">>];
{_, _, _} ->
[<<" and peer='">>,
ejabberd_odbc:escape(jlib: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 >= ">>,
@ -772,11 +776,27 @@ make_sql_query(LUser, _LServer, Start, End, With, RSM) ->
[]
end,
SUser = ejabberd_odbc:escape(LUser),
{[<<"select timestamp, xml, peer from archive where username='">>,
SUser, <<"'">>] ++ WithClause ++ StartClause ++ EndClause ++
DirectionClause ++ LimitClause ++ [<<";">>],
[<<"select count(*) from archive where username='">>,
SUser, <<"'">>] ++ WithClause ++ StartClause ++ EndClause ++ [<<";">>]}.
Query = [<<"SELECT timestamp, xml, peer"
" 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
[<<"(">>, Query, <<" ORDER BY timestamp DESC ">>,
LimitClause, <<") 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.