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bpe src ext bpe_boundary.erl
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src/ext/bpe_boundary.erl 

-module(bpe_boundary).

-include_lib("bpe/include/bpe.hrl").

-export([timer_restart/1, ping/0, ping/1]).



timer_restart(Diff) -> {X,Y,Z} = Diff, erlang:send_after(500*(Z+60*Y+60*60*X),self(),{timer,ping}).

ping() -> application:get_env(bpe,ping,{0,0,5}).



ping(State=#process{timer=Timer,id=Id,events=Events,notifications=Pid}) ->

    {_,Task} = bpe:current_task(State),

    case Timer of [] -> skip; _ -> erlang:cancel_timer(Timer) end,



%   search for '*' wildcard terminal event in process definition

    Terminal = case lists:keytake('*',#messageEvent.id,Events) of

        {value,Event,_} -> {'*',element(1,Event),element(#messageEvent.timeout,Event)};

                  false -> {'*',none,#timeout{spec={none,none}}} end, % forever if none is set



%   search the events with the same name as current task, save event type and timeout

%   if no event found then use timeout information from terminal event

    {Name,Record,#timeout{spec={Days,Pattern}}} = case lists:keytake(Task,#messageEvent.name,Events) of

        {value,Event2,_} -> {Task,element(1,Event2),element(#messageEvent.timeout,Event2)};

                   false -> Terminal end,



%   calculate diff from past event

    {DD,Diff} = case bpe:head(Id) of

        #hist{time=#ts{time=Time1}} -> calendar:time_difference(Time1,calendar:local_time());

                        _ -> {immediate,timeout} end,



    case {{DD,Diff} < {Days,Pattern}, Record} of

        {_,none} -> {noreply,State#process{timer=timer_restart(ping())}};

        {true,_} -> {noreply,State#process{timer=timer_restart(ping())}};

        {false,timeoutEvent} -> % perform auto-complete on timeoutEvents

            logger:notice("BPE: ~p complete Timeout: ~p",[Id,{DD,Diff}]),

            case bpe_proc:process_task([],State) of

                {reply,_,NewState} -> {noreply,NewState#process{timer=timer_restart(ping())}};

                {stop,normal,_,NewState} -> {stop,normal,NewState} end;

        {false,Record} -> logger:notice("BPE: ~p close ~p Timeout: ~p",[Id,Record,{DD,Diff}]),

            case is_pid(Pid) of

                true -> Pid ! {direct,{bpe,terminate,{Name,{Days,Pattern}}}};

                false -> skip end,

            bpe:cache({process,Id},undefined),

            {stop,normal,State} end.