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-rw-r--r--lib/diameter/src/base/diameter_config.erl106
-rw-r--r--lib/diameter/src/base/diameter_config_sup.erl58
-rw-r--r--lib/diameter/src/base/diameter_sup.erl3
-rw-r--r--lib/diameter/src/modules.mk3
-rw-r--r--lib/diameter/src/transport/diameter_sctp.erl37
-rw-r--r--lib/diameter/src/transport/diameter_tcp.erl31
6 files changed, 168 insertions, 70 deletions
diff --git a/lib/diameter/src/base/diameter_config.erl b/lib/diameter/src/base/diameter_config.erl
index 702f11593a..73b828536b 100644
--- a/lib/diameter/src/base/diameter_config.erl
+++ b/lib/diameter/src/base/diameter_config.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2015. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -45,10 +45,12 @@
add_transport/2,
remove_transport/2,
have_transport/2,
- lookup/1]).
+ lookup/1,
+ subscribe/2]).
-%% child server start
--export([start_link/0]).
+%% server start
+-export([start_link/0,
+ start_link/1]).
%% gen_server callbacks
-export([init/1,
@@ -58,8 +60,9 @@
handle_info/2,
code_change/3]).
-%% diameter_sync requests.
--export([sync/1]).
+%% callbacks
+-export([sync/1, %% diameter_sync requests
+ remove/0]). %% transport server termination
%% debug
-export([state/0,
@@ -77,6 +80,9 @@
%% Table config is written to.
-define(TABLE, ?MODULE).
+%% Key on which a transport-specific child registers itself.
+-define(TRANSPORT_KEY(Ref), {?MODULE, transport, Ref}).
+
%% Workaround for dialyzer's lack of understanding of match specs.
-type match(T)
:: T | '_' | '$1' | '$2' | '$3' | '$4'.
@@ -225,6 +231,13 @@ pred(_) ->
?THROW(pred).
%% --------------------------------------------------------------------------
+%% # subscribe/2
+%% --------------------------------------------------------------------------
+
+subscribe(Ref, T) ->
+ diameter_reg:subscribe(?TRANSPORT_KEY(Ref), T).
+
+%% --------------------------------------------------------------------------
%% # have_transport/2
%%
%% Output: true | false
@@ -264,6 +277,9 @@ start_link() ->
Options = [{spawn_opt, diameter_lib:spawn_opts(server, [])}],
gen_server:start_link(ServerName, Module, Args, Options).
+start_link(T) ->
+ proc_lib:start_link(?MODULE, init, [T], infinity, []).
+
state() ->
call(state).
@@ -274,8 +290,42 @@ uptime() ->
%%% # init/1
%%% ----------------------------------------------------------
+%% ?SERVER start.
init([]) ->
- {ok, #state{}}.
+ {ok, #state{}};
+
+%% Child start as a consequence of add_transport.
+init({SvcName, Type, Opts}) ->
+ Res = try
+ add(SvcName, Type, Opts)
+ catch
+ ?FAILURE(Reason) -> {error, Reason}
+ end,
+ proc_lib:init_ack({ok, self(), Res}),
+ sleep(Res).
+
+%% sleep/1
+
+sleep({ok, _}) ->
+ sleep();
+
+sleep({error, _}) ->
+ ok. %% die
+
+%% sleep/0
+
+sleep() ->
+ proc_lib:hibernate(?MODULE, remove, []).
+
+%% remove/0
+
+remove() ->
+ receive
+ {?MODULE, stop} ->
+ ok;
+ _ ->
+ sleep()
+ end.
%%% ----------------------------------------------------------
%%% # handle_call/2
@@ -404,19 +454,22 @@ sync({start_service, SvcName, Opts}) ->
sync({stop_service, SvcName}) ->
stop(SvcName);
+%% Start a child whose only purpose is to be alive for the lifetime of
+%% the transport configuration and publish itself in diameter_reg.
+%% This is to provide a way for processes to to be notified when the
+%% configuration is removed (diameter_reg:subscribe/2).
sync({add, SvcName, Type, Opts}) ->
- try
- add(SvcName, Type, Opts)
- catch
- ?FAILURE(Reason) -> {error, Reason}
- end;
+ {ok, _Pid, Res} = diameter_config_sup:start_child({SvcName, Type, Opts}),
+ Res;
sync({remove, SvcName, Pred}) ->
- remove(select([{#transport{service = '$1', _ = '_'},
+ Recs = select([{#transport{service = '$1', _ = '_'},
[{'=:=', '$1', {const, SvcName}}],
['$_']}]),
- SvcName,
- Pred).
+ F = fun(#transport{ref = R, type = T, options = O}) ->
+ Pred(R,T,O)
+ end,
+ remove(SvcName, lists:filter(F, Recs)).
%% start/3
@@ -503,6 +556,7 @@ add(SvcName, Type, Opts) ->
ok = transport_opts(Opts),
Ref = make_ref(),
+ true = diameter_reg:add_new(?TRANSPORT_KEY(Ref)),
T = {Ref, Type, Opts},
%% The call to the service returns error if the service isn't
%% started yet, which is harmless. The transport will be started
@@ -594,26 +648,30 @@ start_transport(SvcName, T) ->
No
end.
-%% remove/3
-
-remove(L, SvcName, Pred) ->
- rm(SvcName, lists:filter(fun(#transport{ref = R, type = T, options = O}) ->
- Pred(R,T,O)
- end,
- L)).
+%% remove/2
-rm(_, []) ->
+remove(_, []) ->
ok;
-rm(SvcName, L) ->
+
+remove(SvcName, L) ->
Refs = lists:map(fun(#transport{ref = R}) -> R end, L),
case stop_transport(SvcName, Refs) of
ok ->
+ lists:foreach(fun stop_child/1, Refs),
diameter_stats:flush(Refs),
lists:foreach(fun delete_object/1, L);
{error, _} = No ->
No
end.
+stop_child(Ref) ->
+ case diameter_reg:match(?TRANSPORT_KEY(Ref)) of
+ [{_, Pid}] -> %% tell the transport-specific child to die
+ Pid ! {?MODULE, stop};
+ [] -> %% already removed/dead
+ ok
+ end.
+
stop_transport(SvcName, Refs) ->
case diameter_service:stop_transport(SvcName, Refs) of
ok ->
diff --git a/lib/diameter/src/base/diameter_config_sup.erl b/lib/diameter/src/base/diameter_config_sup.erl
new file mode 100644
index 0000000000..9524573378
--- /dev/null
+++ b/lib/diameter/src/base/diameter_config_sup.erl
@@ -0,0 +1,58 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2016. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+%% Supervisor for config processes.
+%%
+
+-module(diameter_config_sup).
+
+-behaviour(supervisor).
+
+%% interface
+-export([start_link/0, %% supervisor start
+ start_child/1]). %% config start
+
+-export([init/1]).
+
+-define(NAME, ?MODULE). %% supervisor name
+
+%% start_link/0
+
+start_link() ->
+ SupName = {local, ?NAME},
+ supervisor:start_link(SupName, ?MODULE, []).
+
+%% start_child/1
+
+start_child(T) ->
+ supervisor:start_child(?NAME, [T]).
+
+%% init/1
+
+init([]) ->
+ Mod = diameter_config,
+ Flags = {simple_one_for_one, 0, 1},
+ ChildSpec = {Mod,
+ {Mod, start_link, []},
+ temporary,
+ 1000,
+ worker,
+ [Mod]},
+ {ok, {Flags, [ChildSpec]}}.
diff --git a/lib/diameter/src/base/diameter_sup.erl b/lib/diameter/src/base/diameter_sup.erl
index e89ede9843..482289cb9a 100644
--- a/lib/diameter/src/base/diameter_sup.erl
+++ b/lib/diameter/src/base/diameter_sup.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2015. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -34,6 +34,7 @@
-export([init/1]).
-define(CHILDREN, [diameter_misc_sup,
+ diameter_config_sup,
diameter_watchdog_sup,
diameter_peer_fsm_sup,
diameter_transport_sup,
diff --git a/lib/diameter/src/modules.mk b/lib/diameter/src/modules.mk
index 3b223ea391..4e4ce60ddf 100644
--- a/lib/diameter/src/modules.mk
+++ b/lib/diameter/src/modules.mk
@@ -1,7 +1,7 @@
# %CopyrightBegin%
#
-# Copyright Ericsson AB 2010-2015. All Rights Reserved.
+# Copyright Ericsson AB 2010-2016. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -37,6 +37,7 @@ RT_MODULES = \
base/diameter_callback \
base/diameter_capx \
base/diameter_config \
+ base/diameter_config_sup \
base/diameter_codec \
base/diameter_dict \
base/diameter_lib \
diff --git a/lib/diameter/src/transport/diameter_sctp.erl b/lib/diameter/src/transport/diameter_sctp.erl
index 8a80ce630a..4a005b853d 100644
--- a/lib/diameter/src/transport/diameter_sctp.erl
+++ b/lib/diameter/src/transport/diameter_sctp.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2010-2015. All Rights Reserved.
+%% Copyright Ericsson AB 2010-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -61,10 +61,6 @@
%% Remote addresses to accept connections from.
-define(DEFAULT_ACCEPT, []). %% any
-%% How long a listener with no associations lives before offing
-%% itself.
--define(LISTENER_TIMEOUT, 30000).
-
%% How long to wait for a transport process to attach after
%% association establishment.
-define(ACCEPT_TIMEOUT, 5000).
@@ -104,7 +100,6 @@
socket :: gen_sctp:sctp_socket(),
count = 0 :: uint(), %% attached transport processes
pending = {0, queue:new()},
- tref :: reference() | undefined,
accept :: [match()]}).
%% Field pending implements two queues: the first of transport-to-be
%% processes to which an association has been assigned but for which
@@ -216,14 +211,15 @@ init(T) ->
%% A process owning a listening socket.
i({listen, Ref, {Opts, Addrs}}) ->
+ [_] = diameter_config:subscribe(Ref, transport), %% assert existence
{[Matches], Rest} = proplists:split(Opts, [accept]),
{LAs, Sock} = AS = open(Addrs, Rest, ?DEFAULT_PORT),
ok = gen_sctp:listen(Sock, true),
true = diameter_reg:add_new({?MODULE, listener, {Ref, AS}}),
proc_lib:init_ack({ok, self(), LAs}),
- start_timer(#listener{ref = Ref,
- socket = Sock,
- accept = [[M] || {accept, M} <- Matches]});
+ #listener{ref = Ref,
+ socket = Sock,
+ accept = [[M] || {accept, M} <- Matches]};
%% A connecting transport.
i({connect, Pid, Opts, Addrs, Ref}) ->
@@ -431,13 +427,6 @@ putr(Key, Val) ->
getr(Key) ->
get({?MODULE, Key}).
-%% start_timer/1
-
-start_timer(#listener{count = 0} = S) ->
- S#listener{tref = erlang:start_timer(?LISTENER_TIMEOUT, self(), close)};
-start_timer(S) ->
- S.
-
%% l/2
%%
%% Transition listener state.
@@ -455,12 +444,10 @@ l({sctp, Sock, _RA, _RP, Data} = T, #listener{socket = Sock,
l({'DOWN', _MRef, process, TPid, _}, #listener{pending = {_,Q}} = S) ->
down(queue:member(TPid, Q), TPid, S);
-%% Timeout after the last accepting process has died.
-l({timeout, TRef, close = T}, #listener{tref = TRef,
- count = 0}) ->
- x(T);
-l({timeout, _, close}, #listener{} = S) ->
- S.
+%% Transport has been removed.
+l({transport, remove, _} = T, #listener{socket = Sock}) ->
+ gen_sctp:close(Sock),
+ x(T).
%% down/3
%%
@@ -472,15 +459,15 @@ down(true, TPid, #listener{pending = {N,Q},
= S) ->
NQ = queue:filter(fun(P) -> P /= TPid end, Q),
if N < 0 -> %% awaiting an association ...
- start_timer(S#listener{count = K-1,
- pending = {N+1, NQ}});
+ S#listener{count = K-1,
+ pending = {N+1, NQ}};
true -> %% ... or one has been assigned
S#listener{pending = {N-1, NQ}}
end;
%% ... or one that's already attached.
down(false, _TPid, #listener{count = K} = S) ->
- start_timer(S#listener{count = K-1}).
+ S#listener{count = K-1}.
%% t/2
%%
diff --git a/lib/diameter/src/transport/diameter_tcp.erl b/lib/diameter/src/transport/diameter_tcp.erl
index 6a5e5fe89d..546c2cfa5e 100644
--- a/lib/diameter/src/transport/diameter_tcp.erl
+++ b/lib/diameter/src/transport/diameter_tcp.erl
@@ -57,7 +57,6 @@
-define(ERROR(T), erlang:error({T, ?MODULE, ?LINE})).
-define(DEFAULT_PORT, 3868). %% RFC 3588, ch 2.1
--define(LISTENER_TIMEOUT, 30000).
-define(DEFAULT_FRAGMENT_TIMEOUT, 1000).
-define(IS_UINT32(N), (is_integer(N) andalso 0 =< N andalso 0 == N bsr 32)).
@@ -73,8 +72,10 @@
%% Listener process state.
-record(listener, {socket :: inet:socket(),
- count = 1 :: non_neg_integer(),
- tref :: reference() | undefined}).
+ count = 1 :: non_neg_integer()}). %% accepting processes
+%% The count of accepting processes was previously used to terminate
+%% the listening process, but diameter_reg:subscribe/2 is now used for
+%% this. Leave the the count for trace purposes.
%% Monitor process state.
-record(monitor,
@@ -240,6 +241,7 @@ i(#monitor{parent = Pid, transport = TPid} = S) ->
%% gen_tcp seems to so. Links should be left to supervisors.
i({listen, LRef, APid, {Mod, Opts, Addrs}}) ->
+ [_] = diameter_config:subscribe(LRef, transport), %% assert existence
{[LA, LP], Rest} = proplists:split(Opts, [ip, port]),
LAddrOpt = get_addr(LA, Addrs),
LPort = get_port(LP),
@@ -248,7 +250,7 @@ i({listen, LRef, APid, {Mod, Opts, Addrs}}) ->
true = diameter_reg:add_new({?MODULE, listener, {LRef, {LAddr, LSock}}}),
proc_lib:init_ack({ok, self(), {LAddr, LSock}}),
monitor(process, APid),
- start_timer(#listener{socket = LSock}).
+ #listener{socket = LSock}.
laddr([], Mod, Sock) ->
{ok, {Addr, _Port}} = sockname(Mod, Sock),
@@ -484,13 +486,6 @@ putr(Key, Val) ->
getr(Key) ->
get({?MODULE, Key}).
-%% start_timer/1
-
-start_timer(#listener{count = 0} = S) ->
- S#listener{tref = erlang:start_timer(?LISTENER_TIMEOUT, self(), close)};
-start_timer(S) ->
- S.
-
%% m/2
%%
%% Transition monitor state.
@@ -512,21 +507,19 @@ m({'DOWN', _, process, Pid, _}, #monitor{parent = Pid,
%%
%% Transition listener state.
-%% Another accept transport is attaching.
+%% An accepting transport is attaching.
l({accept, TPid}, #listener{count = N} = S) ->
monitor(process, TPid),
S#listener{count = N+1};
%% Accepting process has died.
l({'DOWN', _, process, _, _}, #listener{count = N} = S) ->
- start_timer(S#listener{count = N-1});
+ S#listener{count = N-1};
-%% Timeout after the last accepting process has died.
-l({timeout, TRef, close = T}, #listener{tref = TRef,
- count = 0}) ->
- x(T);
-l({timeout, _, close}, #listener{} = S) ->
- S.
+%% Transport has been removed.
+l({transport, remove, _} = T, #listener{socket = Sock}) ->
+ gen_tcp:close(Sock),
+ x(T).
%% t/2
%%
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 03:31:42 +0000