Chapril/xmpp.chapril.org-ejabberd
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Keep last handled stanzas number in cache rather than session table

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This commit is contained in:
Evgeny Khramtsov 2018-11-30 16:18:49 +03:00
parent b8883b5a61
commit 5d27c975dc
3 changed files with 74 additions and 101 deletions
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2
rebar.config
View File

@ -20,7 +20,7 @@
{deps, [{lager, ".*", {git, "https://github.com/erlang-lager/lager", "3.6.7"}},
{p1_utils, ".*", {git, "https://github.com/processone/p1_utils", {tag, "1.0.13"}}},
{cache_tab, ".*", {git, "https://github.com/processone/cache_tab", {tag, "1.0.16"}}},
{cache_tab, ".*", {git, "https://github.com/processone/cache_tab", {tag, "6493974"}}},
{fast_tls, ".*", {git, "https://github.com/processone/fast_tls", {tag, "1.0.26"}}},
{stringprep, ".*", {git, "https://github.com/processone/stringprep", {tag, "1.0.14"}}},
{fast_xml, ".*", {git, "https://github.com/processone/fast_xml", {tag, "1.1.34"}}},

98
src/ejabberd_sm.erl
View File

@ -50,8 +50,6 @@
set_presence/7,
unset_presence/6,
close_session_unset_presence/5,
set_offline_info/5,
get_offline_info/4,
dirty_get_sessions_list/0,
dirty_get_my_sessions_list/0,
get_vh_session_list/1,
@ -78,8 +76,7 @@
host_down/1,
make_sid/0,
clean_cache/1,
config_reloaded/0,
is_online/1
config_reloaded/0
]).
-export([init/1, handle_call/3, handle_cast/2,
@ -211,14 +208,14 @@ get_user_resources(User, Server) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
Mod = get_sm_backend(LServer),
Ss = online(get_sessions(Mod, LUser, LServer)),
Ss = get_sessions(Mod, LUser, LServer),
[element(3, S#session.usr) || S <- clean_session_list(Ss)].
-spec get_user_present_resources(binary(), binary()) -> [tuple()].
get_user_present_resources(LUser, LServer) ->
Mod = get_sm_backend(LServer),
Ss = online(get_sessions(Mod, LUser, LServer)),
Ss = get_sessions(Mod, LUser, LServer),
[{S#session.priority, element(3, S#session.usr)}
|| S <- clean_session_list(Ss), is_integer(S#session.priority)].
@ -229,7 +226,7 @@ get_user_ip(User, Server, Resource) ->
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
case online(get_sessions(Mod, LUser, LServer, LResource)) of
case get_sessions(Mod, LUser, LServer, LResource) of
[] ->
undefined;
Ss ->
@ -242,7 +239,7 @@ get_user_info(User, Server) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
Mod = get_sm_backend(LServer),
Ss = online(get_sessions(Mod, LUser, LServer)),
Ss = get_sessions(Mod, LUser, LServer),
[{LResource, [{node, node(Pid)}, {ts, Ts}, {pid, Pid},
{priority, Priority} | Info]}
|| #session{usr = {_, _, LResource},
@ -257,7 +254,7 @@ get_user_info(User, Server, Resource) ->
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
case online(get_sessions(Mod, LUser, LServer, LResource)) of
case get_sessions(Mod, LUser, LServer, LResource) of
[] ->
offline;
Ss ->
@ -316,7 +313,7 @@ get_session_sid(User, Server, Resource) ->
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
case online(get_sessions(Mod, LUser, LServer, LResource)) of
case get_sessions(Mod, LUser, LServer, LResource) of
[] ->
none;
Ss ->
@ -330,43 +327,15 @@ get_session_sids(User, Server) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
Mod = get_sm_backend(LServer),
Sessions = online(get_sessions(Mod, LUser, LServer)),
Sessions = get_sessions(Mod, LUser, LServer),
[SID || #session{sid = SID} <- Sessions].
-spec set_offline_info(sid(), binary(), binary(), binary(), info()) -> ok.
set_offline_info(SID, User, Server, Resource, Info) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
set_session(SID, LUser, LServer, LResource, undefined, [offline | Info]).
-spec get_offline_info(erlang:timestamp(), binary(), binary(),
binary()) -> none | info().
get_offline_info(Time, User, Server, Resource) ->
LUser = jid:nodeprep(User),
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
case get_sessions(Mod, LUser, LServer, LResource) of
[#session{sid = {Time, _}, info = Info}] ->
case proplists:get_bool(offline, Info) of
true ->
Info;
false ->
none
end;
_ ->
none
end.
-spec dirty_get_sessions_list() -> [ljid()].
dirty_get_sessions_list() ->
lists:flatmap(
fun(Mod) ->
[S#session.usr || S <- online(get_sessions(Mod))]
[S#session.usr || S <- get_sessions(Mod)]
end, get_sm_backends()).
-spec dirty_get_my_sessions_list() -> [#session{}].
@ -374,7 +343,7 @@ dirty_get_sessions_list() ->
dirty_get_my_sessions_list() ->
lists:flatmap(
fun(Mod) ->
[S || S <- online(get_sessions(Mod)),
[S || S <- get_sessions(Mod),
node(element(2, S#session.sid)) == node()]
end, get_sm_backends()).
@ -383,14 +352,14 @@ dirty_get_my_sessions_list() ->
get_vh_session_list(Server) ->
LServer = jid:nameprep(Server),
Mod = get_sm_backend(LServer),
[S#session.usr || S <- online(get_sessions(Mod, LServer))].
[S#session.usr || S <- get_sessions(Mod, LServer)].
-spec get_all_pids() -> [pid()].
get_all_pids() ->
lists:flatmap(
fun(Mod) ->
[element(2, S#session.sid) || S <- online(get_sessions(Mod))]
[element(2, S#session.sid) || S <- get_sessions(Mod)]
end, get_sm_backends()).
-spec get_vh_session_number(binary()) -> non_neg_integer().
@ -398,7 +367,7 @@ get_all_pids() ->
get_vh_session_number(Server) ->
LServer = jid:nameprep(Server),
Mod = get_sm_backend(LServer),
length(online(get_sessions(Mod, LServer))).
length(get_sessions(Mod, LServer)).
%% Why the hell do we have so many similar kicks?
c2s_handle_info(#{lang := Lang} = State, replaced) ->
@ -579,16 +548,6 @@ delete_session(Mod, #session{usr = {LUser, LServer, _}} = Session) ->
ok
end.
-spec online([#session{}]) -> [#session{}].
online(Sessions) ->
lists:filter(fun is_online/1, Sessions).
-spec is_online(#session{}) -> boolean().
is_online(#session{info = Info}) ->
not proplists:get_bool(offline, Info).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec do_route(jid(), term()) -> any().
do_route(#jid{lresource = <<"">>} = To, Term) ->
@ -600,7 +559,7 @@ do_route(To, Term) ->
?DEBUG("broadcasting ~p to ~s", [Term, jid:encode(To)]),
{U, S, R} = jid:tolower(To),
Mod = get_sm_backend(S),
case online(get_sessions(Mod, U, S, R)) of
case get_sessions(Mod, U, S, R) of
[] ->
?DEBUG("dropping broadcast to unavailable resourse: ~p", [Term]);
Ss ->
@ -631,7 +590,7 @@ do_route(#presence{to = To, type = T} = Packet)
ejabberd_c2s:route(Pid, {route, Packet1});
(_) ->
ok
end, online(get_sessions(Mod, LUser, LServer)));
end, get_sessions(Mod, LUser, LServer));
false ->
ok
end;
@ -660,7 +619,7 @@ do_route(Packet) ->
To = xmpp:get_to(Packet),
{LUser, LServer, LResource} = jid:tolower(To),
Mod = get_sm_backend(LServer),
case online(get_sessions(Mod, LUser, LServer, LResource)) of
case get_sessions(Mod, LUser, LServer, LResource) of
[] ->
case Packet of
#message{type = T} when T == chat; T == normal ->
@ -708,8 +667,8 @@ route_message(#message{to = To, type = Type} = Packet) ->
(P >= 0) and (Type == headline) ->
LResource = jid:resourceprep(R),
Mod = get_sm_backend(LServer),
case online(get_sessions(Mod, LUser, LServer,
LResource)) of
case get_sessions(Mod, LUser, LServer,
LResource) of
[] ->
ok; % Race condition
Ss ->
@ -780,13 +739,9 @@ check_for_sessions_to_replace(User, Server, Resource) ->
check_existing_resources(LUser, LServer, LResource) ->
Mod = get_sm_backend(LServer),
Ss = get_sessions(Mod, LUser, LServer, LResource),
{OnlineSs, OfflineSs} = lists:partition(fun is_online/1, Ss),
lists:foreach(fun(S) ->
delete_session(Mod, S)
end, OfflineSs),
if OnlineSs == [] -> ok;
if Ss == [] -> ok;
true ->
SIDs = [SID || #session{sid = SID} <- OnlineSs],
SIDs = [SID || #session{sid = SID} <- Ss],
MaxSID = lists:max(SIDs),
lists:foreach(fun ({_, Pid} = S) when S /= MaxSID ->
ejabberd_c2s:route(Pid, replaced);
@ -806,22 +761,17 @@ get_resource_sessions(User, Server, Resource) ->
LServer = jid:nameprep(Server),
LResource = jid:resourceprep(Resource),
Mod = get_sm_backend(LServer),
[S#session.sid || S <- online(get_sessions(Mod, LUser, LServer, LResource))].
[S#session.sid || S <- get_sessions(Mod, LUser, LServer, LResource)].
-spec check_max_sessions(binary(), binary()) -> ok | replaced.
check_max_sessions(LUser, LServer) ->
Mod = get_sm_backend(LServer),
Ss = get_sessions(Mod, LUser, LServer),
{OnlineSs, OfflineSs} = lists:partition(fun is_online/1, Ss),
MaxSessions = get_max_user_sessions(LUser, LServer),
if length(OnlineSs) =< MaxSessions -> ok;
if length(Ss) =< MaxSessions -> ok;
true ->
#session{sid = {_, Pid}} = lists:min(OnlineSs),
#session{sid = {_, Pid}} = lists:min(Ss),
ejabberd_c2s:route(Pid, replaced)
end,
if length(OfflineSs) =< MaxSessions -> ok;
true ->
delete_session(Mod, lists:min(OfflineSs))
end.
%% Get the user_max_session setting
@ -843,7 +793,7 @@ get_max_user_sessions(LUser, Host) ->
force_update_presence({LUser, LServer}) ->
Mod = get_sm_backend(LServer),
Ss = online(get_sessions(Mod, LUser, LServer)),
Ss = get_sessions(Mod, LUser, LServer),
lists:foreach(fun (#session{sid = {_, Pid}}) ->
ejabberd_c2s:resend_presence(Pid)
end,

75
src/mod_stream_mgmt.erl
View File

@ -40,6 +40,8 @@
-include("logger.hrl").
-include("p1_queue.hrl").
-define(STREAM_MGMT_CACHE, stream_mgmt_cache).
-define(is_sm_packet(Pkt),
is_record(Pkt, sm_enable) or
is_record(Pkt, sm_resume) or
@ -51,7 +53,8 @@
%%%===================================================================
%%% API
%%%===================================================================
start(Host, _Opts) ->
start(Host, Opts) ->
init_cache(Opts),
ejabberd_hooks:add(c2s_init, ?MODULE, c2s_stream_init, 50),
ejabberd_hooks:add(c2s_stream_started, Host, ?MODULE,
c2s_stream_started, 50),
@ -284,23 +287,16 @@ c2s_terminated(#{mgmt_state := resumed, jid := JID} = State, _Reason) ->
[jid:encode(JID)]),
bounce_message_queue(),
{stop, State};
c2s_terminated(#{mgmt_state := MgmtState, mgmt_stanzas_in := In, sid := SID,
user := U, server := S, resource := R} = State, Reason) ->
Result = case MgmtState of
timeout ->
Info = [{num_stanzas_in, In}],
%% TODO: Usually, ejabberd_c2s:process_terminated/2 is
%% called later in the hook chain. We swap the order so
%% that the offline info won't be purged after we stored
%% it. This should be fixed in a proper way.
State1 = ejabberd_c2s:process_terminated(State, Reason),
ejabberd_sm:set_offline_info(SID, U, S, R, Info),
{stop, State1};
_ ->
State
end,
c2s_terminated(#{mgmt_state := MgmtState, mgmt_stanzas_in := In,
sid := {Time, _}, jid := JID} = State, _Reason) ->
case MgmtState of
timeout ->
store_stanzas_in(jid:tolower(JID), Time, In);
_ ->
ok
end,
route_unacked_stanzas(State),
Result;
State;
c2s_terminated(State, _Reason) ->
State.
@ -641,16 +637,11 @@ inherit_session_state(#{user := U, server := S,
{term, {R, Time}} ->
case ejabberd_sm:get_session_pid(U, S, R) of
none ->
case ejabberd_sm:get_offline_info(Time, U, S, R) of
none ->
case pop_stanzas_in({U, S, R}, Time) of
error ->
{error, <<"Previous session PID not found">>};
Info ->
case proplists:get_value(num_stanzas_in, Info) of
undefined ->
{error, <<"Previous session timed out">>};
H ->
{error, <<"Previous session timed out">>, H}
end
{ok, H} ->
{error, <<"Previous session timed out">>, H}
end;
OldPID ->
OldSID = {Time, OldPID},
@ -750,6 +741,32 @@ need_to_enqueue(#{mgmt_force_enqueue := true} = State, #xmlel{}) ->
need_to_enqueue(State, _) ->
{false, State}.
%%%===================================================================
%%% Cache-like storage for last handled stanzas
%%%===================================================================
init_cache(Opts) ->
ets_cache:new(?STREAM_MGMT_CACHE, cache_opts(Opts)).
cache_opts(Opts) ->
[{max_size, gen_mod:get_opt(cache_size, Opts)},
{life_time, infinity}].
-spec store_stanzas_in(ljid(), erlang:timestamp(), non_neg_integer()) -> boolean().
store_stanzas_in(LJID, Time, Num) ->
ets_cache:insert(?STREAM_MGMT_CACHE, {LJID, Time}, Num,
ejabberd_cluster:get_nodes()).
-spec pop_stanzas_in(ljid(), erlang:timestamp()) -> {ok, non_neg_integer()} | error.
pop_stanzas_in(LJID, Time) ->
case ets_cache:lookup(?STREAM_MGMT_CACHE, {LJID, Time}) of
{ok, Val} ->
ets_cache:delete(?STREAM_MGMT_CACHE, {LJID, Time},
ejabberd_cluster:get_nodes()),
{ok, Val};
error ->
error
end.
%%%===================================================================
%%% Configuration processing
%%%===================================================================
@ -796,6 +813,11 @@ mod_opt_type(resend_on_timeout) ->
fun(B) when is_boolean(B) -> B;
(if_offline) -> if_offline
end;
mod_opt_type(cache_size) ->
fun(I) when is_integer(I), I>0 -> I;
(unlimited) -> infinity;
(infinity) -> infinity
end;
mod_opt_type(queue_type) ->
fun(ram) -> ram; (file) -> file end.
@ -804,5 +826,6 @@ mod_options(Host) ->
{resume_timeout, 300},
{max_resume_timeout, undefined},
{ack_timeout, 60},
{cache_size, ejabberd_config:cache_size(Host)},
{resend_on_timeout, false},
{queue_type, ejabberd_config:default_queue_type(Host)}].