diff options
Diffstat (limited to 'lib/diameter/src/base/diameter_watchdog.erl')
| -rw-r--r-- | lib/diameter/src/base/diameter_watchdog.erl | 76 |
1 files changed, 26 insertions, 50 deletions
diff --git a/lib/diameter/src/base/diameter_watchdog.erl b/lib/diameter/src/base/diameter_watchdog.erl index 49b6776a84..8d10755180 100644 --- a/lib/diameter/src/base/diameter_watchdog.erl +++ b/lib/diameter/src/base/diameter_watchdog.erl @@ -151,29 +151,45 @@ handle_info(T, #watchdog{} = State) -> ok -> {noreply, State}; #watchdog{} = S -> - event(State, S), + event(T, State, S), {noreply, S}; stop -> ?LOG(stop, T), - event(State, State#watchdog{status = down}), + event(T, State, State#watchdog{status = down}), {stop, {shutdown, T}, State} end. -event(#watchdog{status = T}, #watchdog{status = T}) -> +event(_, #watchdog{status = T}, #watchdog{status = T}) -> ok; -event(#watchdog{transport = undefined}, #watchdog{transport = undefined}) -> +event(_, #watchdog{transport = undefined}, #watchdog{transport = undefined}) -> ok; -event(#watchdog{status = From, transport = F, parent = Pid}, +event(Msg, + #watchdog{status = From, transport = F, parent = Pid}, #watchdog{status = To, transport = T}) -> - E = {tpid(F,T), From, To}, + TPid = tpid(F,T), + E = {[TPid | data(Msg, TPid, From, To)], From, To}, notify(Pid, E), ?LOG(transition, {self(), E}). +data(Msg, TPid, reopen, okay) -> + {recv, TPid, 'DWA', _Pkt} = Msg, %% assert + {TPid, T} = eraser(open), + [T]; + +data({open, TPid, _Hosts, T}, TPid, _From, To) + when To == okay; + To == reopen -> + [T]; + +data(_, _, _, _) -> + []. + tpid(_, Pid) when is_pid(Pid) -> Pid; + tpid(Pid, _) -> Pid. @@ -248,15 +264,13 @@ transition({close, TPid, _Reason}, #watchdog{transport = TPid}) -> %% know the identity of the peer (ie. now) that we know that we're in %% state down rather than initial. -transition({open, TPid, Hosts, T} = Open, +transition({open, TPid, Hosts, _} = Open, #watchdog{transport = TPid, status = initial, - parent = Pid, restrict = {_, R}} = S) -> case okay(getr(restart), Hosts, R) of okay -> - open(Pid, {TPid, T}), set_watchdog(S#watchdog{status = okay}); reopen -> transition(Open, S#watchdog{status = down}) @@ -267,17 +281,15 @@ transition({open, TPid, Hosts, T} = Open, %% SetWatchdog() %% Pending = TRUE REOPEN -transition({open = P, TPid, _Hosts, T}, +transition({open = Key, TPid, _Hosts, T}, #watchdog{transport = TPid, - parent = Pid, status = down} = S) -> %% Store the info we need to notify the parent to reopen the %% connection after the requisite DWA's are received, at which %% time we eraser(open). The reopen message is a later addition, %% to communicate the new capabilities as soon as they're known. - putr(P, {TPid, T}), - Pid ! {reopen, self(), {TPid, T}}, + putr(Key, {TPid, T}), set_watchdog(send_watchdog(S#watchdog{status = reopen, num_dwa = 0})); @@ -300,8 +312,6 @@ transition({'DOWN', _, process, TPid, _}, transition({'DOWN', _, process, TPid, _}, #watchdog{transport = TPid} = S) -> - failover(S), - close(S), set_watchdog(S#watchdog{status = down, pending = false, transport = undefined}); @@ -401,29 +411,6 @@ tw(T) tw({M,F,A}) -> apply(M,F,A). -%% open/2 - -open(Pid, {_,_} = T) -> - Pid ! {connection_up, self(), T}. - -%% failover/1 - -failover(#watchdog{status = okay, - parent = Pid}) -> - Pid ! {connection_down, self()}; - -failover(_) -> - ok. - -%% close/1 - -close(#watchdog{status = down}) -> - ok; - -close(#watchdog{parent = Pid}) -> - {{T, _}, _, _} = getr(restart), - T == accept andalso (Pid ! {close, self()}). - %% send_watchdog/1 send_watchdog(#watchdog{pending = false, @@ -511,12 +498,10 @@ rcv(_, #watchdog{status = okay} = S) -> %% SetWatchdog() OKAY rcv('DWA', #watchdog{status = suspect} = S) -> - failback(S), set_watchdog(S#watchdog{status = okay, pending = false}); rcv(_, #watchdog{status = suspect} = S) -> - failback(S), set_watchdog(S#watchdog{status = okay}); %% REOPEN Receive DWA & Pending = FALSE @@ -524,10 +509,8 @@ rcv(_, #watchdog{status = suspect} = S) -> %% Failback() OKAY rcv('DWA', #watchdog{status = reopen, - num_dwa = 2 = N, - parent = Pid} + num_dwa = 2 = N} = S) -> - open(Pid, eraser(open)), S#watchdog{status = okay, num_dwa = N+1, pending = false}; @@ -546,11 +529,6 @@ rcv('DWA', #watchdog{status = reopen, rcv(_, #watchdog{status = reopen} = S) -> throwaway(S). -%% failback/1 - -failback(#watchdog{parent = Pid}) -> - Pid ! {connection_up, self()}. - %% timeout/1 %% %% The caller sets the watchdog on the return value. @@ -575,7 +553,6 @@ timeout(#watchdog{status = T, timeout(#watchdog{status = okay, pending = true} = S) -> - failover(S), S#watchdog{status = suspect}; %% SUSPECT Timer expires CloseConnection() @@ -592,7 +569,6 @@ timeout(#watchdog{status = T, when T == suspect; T == reopen, P, N < 0 -> exit(TPid, {shutdown, watchdog_timeout}), - close(S), S#watchdog{status = down}; %% REOPEN Timer expires & NumDWA = -1 |