diff options
Diffstat (limited to 'lib/diameter/src/base/diameter_service.erl')
-rw-r--r-- | lib/diameter/src/base/diameter_service.erl | 75 |
1 files changed, 59 insertions, 16 deletions
diff --git a/lib/diameter/src/base/diameter_service.erl b/lib/diameter/src/base/diameter_service.erl index 87ef2e522d..ccf68f4d93 100644 --- a/lib/diameter/src/base/diameter_service.erl +++ b/lib/diameter/src/base/diameter_service.erl @@ -32,6 +32,7 @@ -export([subscribe/1, unsubscribe/1, services/0, + peer_info/1, info/2]). %% towards diameter_config @@ -128,14 +129,14 @@ %% Record representing an RFC 3539 watchdog process implemented by %% diameter_watchdog. -record(watchdog, - {pid :: match(pid()), + {pid :: match(pid()) | undefined, type :: match(connect | accept), ref :: match(reference()), %% key into diameter_config options :: match([diameter:transport_opt()]),%% from start_transport state = ?WD_INITIAL :: match(wd_state()), started = diameter_lib:now(),%% at process start peer = false :: match(boolean() | pid())}). - %% true at accepted, pid() at okay/reopen + %% true at accepted/remove, pid() at okay/reopen %% Record representing a Peer State Machine processes implemented by %% diameter_peer_fsm. @@ -218,6 +219,29 @@ lookup_state(SvcName) -> end. %% --------------------------------------------------------------------------- +%% # peer_info/2 +%% --------------------------------------------------------------------------- + +%% An extended version of info_peer/1 for peer_info/1. +peer_info(Pid) -> + try + {_, PD} = process_info(Pid, dictionary), + {_, T} = lists:keyfind({diameter_peer_fsm, start}, 1, PD), + {TPid, {{Type, Ref}, TMod, Cfg}} = T, + {_, TD} = process_info(TPid, dictionary), + {_, Data} = lists:keyfind({TMod, info}, 1, TD), + [{ref, Ref}, + {type, Type}, + {owner, TPid}, + {module, TMod}, + {config, Cfg} + | try TMod:info(Data) catch _:_ -> [] end] + catch + error:_ -> + [] + end. + +%% --------------------------------------------------------------------------- %% # subscribe/1 %% # unsubscribe/1 %% --------------------------------------------------------------------------- @@ -226,7 +250,7 @@ subscribe(SvcName) -> diameter_reg:add({?MODULE, subscriber, SvcName}). unsubscribe(SvcName) -> - diameter_reg:del({?MODULE, subscriber, SvcName}). + diameter_reg:remove({?MODULE, subscriber, SvcName}). subscriptions(Pat) -> pmap(diameter_reg:match({?MODULE, subscriber, Pat})). @@ -652,25 +676,34 @@ mod_state(Alias, ModS) -> %% remove_transport shutdown(Refs, #state{watchdogT = WatchdogT}) when is_list(Refs) -> - ets:foldl(fun(P,ok) -> st(P, Refs), ok end, ok, WatchdogT); + ets:insert(WatchdogT, ets:foldl(fun(R,A) -> st(R, Refs, A) end, + [], + WatchdogT)); %% application/service shutdown shutdown(Reason, #state{watchdogT = WatchdogT}) when Reason == application; Reason == service -> - diameter_lib:wait(ets:foldl(fun(P,A) -> st(P, Reason, A) end, + diameter_lib:wait(ets:foldl(fun(P,A) -> ss(P, Reason, A) end, [], WatchdogT)). -%% st/2 +%% st/3 -st(#watchdog{ref = Ref, pid = Pid}, Refs) -> - lists:member(Ref, Refs) - andalso (Pid ! {shutdown, self(), transport}). %% 'DOWN' cleans up +%% Mark replacement as started so that a subsequent accept doesn't +%% result in a new process that isn't terminated. +st(#watchdog{ref = Ref, pid = Pid, peer = P} = Rec, Refs, Acc) -> + case lists:member(Ref, Refs) of + true -> + Pid ! {shutdown, self(), transport}, %% 'DOWN' cleans up + [Rec#watchdog{peer = true} || P == false] ++ Acc; + false -> + Acc + end. -%% st/3 +%% ss/3 -st(#watchdog{pid = Pid}, Reason, Acc) -> +ss(#watchdog{pid = Pid}, Reason, Acc) -> MRef = monitor(process, Pid), Pid ! {shutdown, self(), Reason}, [MRef | Acc]. @@ -950,11 +983,22 @@ ms(_, Svc) -> %% --------------------------------------------------------------------------- accepted(Pid, _TPid, #state{watchdogT = WatchdogT} = S) -> - #watchdog{ref = Ref, type = accept = T, peer = false, options = Opts} + #watchdog{type = accept = T, peer = P} = Wd = fetch(WatchdogT, Pid), - ets:insert(WatchdogT, Wd#watchdog{peer = true}),%% mark replacement started - start(Ref, T, Opts, S). %% start new watchdog + if not P -> + #watchdog{ref = Ref, options = Opts} = Wd, + %% Mark replacement started, and start new watchdog. + ets:insert(WatchdogT, Wd#watchdog{peer = true}), + start(Ref, T, Opts, S); + P -> + %% Transport removal in progress: true has been set in + %% shutdown/2, and the transport will die as a + %% consequence. + ok + end. + +%% fetch/2 fetch(Tid, Key) -> [T] = ets:lookup(Tid, Key), @@ -1293,8 +1337,7 @@ start_tc(Tc, T, _) -> tc_timeout({Ref, _Type, _Opts} = T, #state{service_name = SvcName} = S) -> tc(diameter_config:have_transport(SvcName, Ref), T, S). -tc(true, {Ref, Type, Opts}, #state{service_name = SvcName} - = S) -> +tc(true, {Ref, Type, Opts}, #state{service_name = SvcName} = S) -> send_event(SvcName, {reconnect, Ref, Opts}), start(Ref, Type, Opts, S); tc(false = No, _, _) -> %% removed |