%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2005-2014. 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%
%%
%%----------------------------------------------------------------------
%% Purpose: Utility functions for the (snmp manager) user test(s).
%%----------------------------------------------------------------------
-module(snmp_manager_user).
-behaviour(snmpm_user).
%% -behaviour(snmpm_user_old).
%%----------------------------------------------------------------------
%% Include files
%%----------------------------------------------------------------------
-include("test_server.hrl").
-include("snmp_test_lib.hrl").
%%----------------------------------------------------------------------
%% External exports
%%----------------------------------------------------------------------
-export([
start_link/0, start_link/1, start_link/2,
start/0, start/1, start/2,
stop/0,
info/0,
system_info/0,
simulate_crash/1,
register_agent/2,
unregister_agent/1,
agent_info/2,
update_agent_info/3,
which_all_agents/0, which_own_agents/0,
load_mib/1, unload_mib/1,
sync_get/1, sync_get/2, sync_get2/3,
async_get/1, async_get/2, async_get2/3,
sync_get_next/1, sync_get_next/2, sync_get_next2/3,
async_get_next/1, async_get_next/2, async_get_next2/3,
sync_set/1, sync_set/2, sync_set2/3,
async_set/1, async_set/2, async_set2/3,
sync_get_bulk/3, sync_get_bulk/4, sync_get_bulk2/5,
async_get_bulk/3, async_get_bulk/4, async_get_bulk2/5,
name_to_oid/1, oid_to_name/1,
purify_oid/1
]).
%%----------------------------------------------------------------------
%% Internal exports
%%----------------------------------------------------------------------
-export([
main/4
]).
-export([
handle_error/3,
handle_agent/5,
handle_pdu/4,
handle_trap/3,
handle_inform/3,
handle_report/3
]).
-define(SERVER, ?MODULE).
-record(state, {parent, id, reqs = []}).
%% -record(request, {from, ref, tmr, req_id, type}).
%%----------------------------------------------------------------------
%% The user API
%%----------------------------------------------------------------------
start() ->
start(self()).
start(Parent) ->
start(Parent, test_user).
start(Parent, Id) ->
proc_lib:start(?MODULE, main, [true, Parent, self(), Id]).
start_link() ->
start_link(self()).
start_link(Parent) ->
start_link(Parent, test_user).
start_link(Parent, Id) ->
proc_lib:start_link(?MODULE, main, [true, Parent, self(), Id]).
stop() ->
MRef = erlang:monitor(process, ?SERVER),
cast(stop),
receive {'DOWN', MRef, _, _, Info} ->
case Info of
noproc ->
ok;
noconnection ->
ok;
normal ->
ok
end
end.
info() ->
call(info).
system_info() ->
call(system_info).
simulate_crash(Reason) ->
call({simulate_crash, Reason}).
register_agent(TargetName, Config)
when is_list(TargetName) andalso is_list(Config) ->
call({register_agent, TargetName, Config}).
unregister_agent(TargetName) ->
call({unregister_agent, TargetName}).
agent_info(TargetName, Item) ->
call({agent_info, TargetName, Item}).
update_agent_info(TargetName, Item, Val) ->
call({update_agent_info, TargetName, Item, Val}).
which_all_agents() ->
call(which_all_agents).
which_own_agents() ->
call(which_own_agents).
load_mib(Mib) ->
call({load_mib, Mib}).
unload_mib(Mib) ->
call({unload_mib, Mib}).
%% --
sync_get(Oids) ->
call({sync_get, Oids}).
sync_get(TargetName, Oids) ->
call({sync_get, TargetName, Oids}).
sync_get2(TargetName, Oids, SendOpts) ->
call({sync_get2, TargetName, Oids, SendOpts}).
%% --
async_get(Oids) ->
call({async_get, Oids}).
async_get(TargetName, Oids) ->
call({async_get, TargetName, Oids}).
async_get2(TargetName, Oids, SendOpts) ->
call({async_get2, TargetName, Oids, SendOpts}).
%% --
sync_get_next(Oids) ->
call({sync_get_next, Oids}).
sync_get_next(TargetName, Oids) ->
call({sync_get_next, TargetName, Oids}).
sync_get_next2(TargetName, Oids, SendOpts) ->
call({sync_get_next2, TargetName, Oids, SendOpts}).
%% --
async_get_next(Oids) ->
call({async_get_next, Oids}).
async_get_next(TargetName, Oids) ->
call({async_get_next, TargetName, Oids}).
async_get_next2(TargetName, Oids, SendOpts) ->
call({async_get_next2, TargetName, Oids, SendOpts}).
%% --
sync_set(VAV) ->
call({sync_set, VAV}).
sync_set(TargetName, VAV) ->
call({sync_set, TargetName, VAV}).
sync_set2(TargetName, VAV, SendOpts) ->
call({sync_set2, TargetName, VAV, SendOpts}).
%% --
async_set(VAV) ->
call({async_set, VAV}).
async_set(TargetName, VAV) ->
call({async_set, TargetName, VAV}).
async_set2(TargetName, VAV, SendOpts) ->
call({async_set2, TargetName, VAV, SendOpts}).
%% --
sync_get_bulk(NonRep, MaxRep, Oids) ->
call({sync_get_bulk, NonRep, MaxRep, Oids}).
sync_get_bulk(TargetName, NonRep, MaxRep, Oids) ->
call({sync_get_bulk, TargetName, NonRep, MaxRep, Oids}).
sync_get_bulk2(TargetName, NonRep, MaxRep, Oids, SendOpts) ->
call({sync_get_bulk2, TargetName, NonRep, MaxRep, Oids, SendOpts}).
%% --
async_get_bulk(NonRep, MaxRep, Oids) ->
call({async_get_bulk, NonRep, MaxRep, Oids}).
async_get_bulk(TargetName, NonRep, MaxRep, Oids) ->
call({async_get_bulk, TargetName, NonRep, MaxRep, Oids}).
async_get_bulk2(TargetName, NonRep, MaxRep, Oids, SendOpts) ->
call({async_get_bulk2, TargetName, NonRep, MaxRep, Oids, SendOpts}).
%% --
name_to_oid(Name) ->
call({name_to_oid, Name}).
oid_to_name(Oid) ->
call({oid_to_name, Oid}).
purify_oid(Oid) ->
call({purify_oid, Oid}).
%%----------------------------------------------------------------------
main(Debug, Parent, Starter, Id) ->
put(debug, Debug),
d("main -> entry with"
"~n Parent: ~p"
"~n Starter: ~p"
"~n Id: ~p", [Parent, Starter, Id]),
case (catch do_init(Id)) of
ok ->
proc_lib:init_ack(Starter, {ok, self()}),
loop(#state{parent = Parent, id = Id});
Error ->
d("main -> error: "
"~p", [Error]),
proc_lib:init_ack(Starter, Error)
end.
do_init(Id) ->
erlang:register(?SERVER, self()),
snmpm:register_user(Id, ?MODULE, self()).
%%----------------------------------------------------------------------
loop(#state{parent = Parent, id = Id} = S) ->
d("loop -> entry"),
receive
{stop, _From} ->
d("loop -> received stop request"),
exit(normal);
{{simulate_crash, Reason}, From, Ref} ->
d("loop -> received simulate_crash request"),
reply(From, ok, Ref),
exit(Reason);
{info, From, Ref} ->
d("loop -> received info request"),
Res = snmpm:info(),
reply(From, Res, Ref),
loop(S);
{system_info, From, Ref} ->
d("loop -> received system_info request"),
Res = snmpm_config:system_info(),
reply(From, Res, Ref),
loop(S);
{{register_agent, TargetName, Conf}, From, Ref} ->
d("loop -> received register_agent request"),
Res = snmpm:register_agent(Id, TargetName, Conf),
reply(From, Res, Ref),
loop(S);
{{unregister_agent, TargetName}, From, Ref} ->
d("loop -> received unregister_agent request"),
Res = snmpm:unregister_agent(Id, TargetName),
reply(From, Res, Ref),
loop(S);
{{agent_info, TargetName, Item}, From, Ref} ->
d("loop -> received agent_info request with"
"~n TargetName: ~p"
"~n Item: ~p", [TargetName, Item]),
Res = snmpm:agent_info(TargetName, Item),
d("loop -> agent_info for ~p"
"~n Res: ~p", [Item, Res]),
reply(From, Res, Ref),
loop(S);
{{update_agent_info, TargetName, Item, Val}, From, Ref} ->
d("loop -> received update_agent_info request with"
"~n TargetName: ~p"
"~n Item: ~p"
"~n Val: ~p", [TargetName, Item, Val]),
Res = snmpm:update_agent_info(Id, TargetName, Item, Val),
reply(From, Res, Ref),
loop(S);
{which_all_agents, From, Ref} ->
d("loop -> received which_all_agents request"),
Res = snmpm:which_agents(),
reply(From, Res, Ref),
loop(S);
{which_own_agents, From, Ref} ->
d("loop -> received which_own_agents request"),
Res = snmpm:which_agents(Id),
reply(From, Res, Ref),
loop(S);
{{load_mib, Mib}, From, Ref} ->
d("loop -> received load_mib request"),
Res = snmpm:load_mib(Mib),
reply(From, Res, Ref),
loop(S);
{{unload_mib, Mib}, From, Ref} ->
d("loop -> received unload_mib request"),
Res = snmpm:unload_mib(Mib),
reply(From, Res, Ref),
loop(S);
%%
%% -- (sync) get-request --
%%
{{sync_get2, TargetName, Oids, SendOpts}, From, Ref}
when is_list(TargetName) ->
d("loop -> received sync_get2 request with"
"~n TargetName: ~p"
"~n Oids: ~p"
"~n SendOpts: ~p", [TargetName, Oids, SendOpts]),
Res = snmpm:sync_get2(Id, TargetName, Oids, SendOpts),
reply(From, Res, Ref),
loop(S);
%% No agent specified, so send it to all of them
{{sync_get, Oids}, From, Ref} ->
d("loop -> received sync_get request "
"(for every agent of this user)"),
Res = [snmpm:sync_get(Id, TargetName, Oids) ||
TargetName <- snmpm:which_agents(Id)],
reply(From, Res, Ref),
loop(S);
{{sync_get, TargetName, Oids}, From, Ref} when is_list(TargetName) ->
d("loop -> received sync_get request with"
"~n TargetName: ~p"
"~n Oids: ~p", [TargetName, Oids]),
Res = snmpm:sync_get(Id, TargetName, Oids),
reply(From, Res, Ref),
loop(S);
%%
%% -- (async) get-request --
%%
{{async_get2, TargetName, Oids, SendOpts}, From, Ref}
when is_list(TargetName) ->
d("loop -> received async_get2 request with"
"~n TargetName: ~p"
"~n Oids: ~p"
"~n SendOpts: ~p", [TargetName, Oids, SendOpts]),
Res = snmpm:async_get2(Id, TargetName, Oids, SendOpts),
reply(From, Res, Ref),
loop(S);
%% No agent specified, so send it to all of them
{{async_get, Oids}, From, Ref} ->
d("loop -> received async_get request"),
Res = [snmpm:async_get(Id, TargetName, Oids) ||
TargetName <- snmpm:which_agents(Id)],
reply(From, Res, Ref),
loop(S);
{{async_get, TargetName, Oids}, From, Ref} when is_list(TargetName) ->
d("loop -> received async_get request with"
"~n TargetName: ~p"
"~n Oids: ~p", [TargetName, Oids]),
Res = snmpm:async_get(Id, TargetName, Oids),
reply(From, Res, Ref),
loop(S);
%%
%% -- (sync) get_next-request --
%%
{{sync_get_next2, TargetName, Oids, SendOpts}, From, Ref}
when is_list(TargetName) ->
d("loop -> received sync_get_next2 request with"
"~n TargetName: ~p"
"~n Oids: ~p"
"~n SendOpts: ~p", [TargetName, Oids, SendOpts]),
Res = snmpm:sync_get_next2(Id, TargetName, Oids, SendOpts),
reply(From, Res, Ref),
loop(S);
%% No agent specified, so send it to all of them
{{sync_get_next, Oids}, From, Ref} ->
d("loop -> received sync_get_next request"),
Res = [snmpm:sync_get_next(Id, TargetName, Oids) ||
TargetName <- snmpm:which_agents(Id)],
reply(From, Res, Ref),
loop(S);
{{sync_get_next, TargetName, Oids}, From, Ref} when is_list(TargetName) ->
d("loop -> received sync_get_next request with"
"~n TargetName: ~p"
"~n Oids: ~p", [TargetName, Oids]),
Res = snmpm:sync_get_next(Id, TargetName, Oids),
reply(From, Res, Ref),
loop(S);
%%
%% -- (async) get_next-request --
%%
{{async_get_next2, TargetName, Oids, SendOpts}, From, Ref}
when is_list(TargetName) ->
d("loop -> received async_get_next2 request with"
"~n TargetName: ~p"
"~n Oids: ~p"
"~n SendOpts: ~p", [TargetName, Oids, SendOpts]),
Res = snmpm:async_get_next2(Id, TargetName, Oids, SendOpts),
reply(From, Res, Ref),
loop(S);
%% No agent specified, so send it to all of them
{{async_get_next, Oids}, From, Ref} ->
d("loop -> received async_get_next request"),
Res = [snmpm:async_get_next(Id, TargetName, Oids) ||
TargetName <- snmpm:which_agents(Id)],
reply(From, Res, Ref),
loop(S);
{{async_get_next, TargetName, Oids}, From, Ref} when is_list(TargetName) ->
d("loop -> received async_get_next request with"
"~n TargetName: ~p"
"~n Oids: ~p", [TargetName, Oids]),
Res = snmpm:async_get_next(Id, TargetName, Oids),
reply(From, Res, Ref),
loop(S);
%%
%% -- (sync) set-request --
%%
{{sync_set2, TargetName, VAV, SendOpts}, From, Ref}
when is_list(TargetName) ->
d("loop -> received sync_set2 request with"
"~n TargetName: ~p"
"~n VAV: ~p"
"~n SendOpts: ~p", [TargetName, VAV, SendOpts]),
Res = snmpm:sync_set2(Id, TargetName, VAV, SendOpts),
reply(From, Res, Ref),
loop(S);
{{sync_set, VAV}, From, Ref} ->
d("loop -> received sync_set request"),
Res = [snmpm:sync_set(Id, TargetName, VAV) ||
TargetName <- snmpm:which_agents(Id)],
reply(From, Res, Ref),
loop(S);
{{sync_set, TargetName, VAV}, From, Ref} when is_list(TargetName) ->
d("loop -> received sync_set request"),
Res = snmpm:sync_set(Id, TargetName, VAV),
reply(From, Res, Ref),
loop(S);
%%
%% -- (async) set-request --
%%
{{async_set2, TargetName, VAV, SendOpts}, From, Ref}
when is_list(TargetName) ->
d("loop -> received async_set2 request with"
"~n TargetName: ~p"
"~n VAV: ~p"
"~n SendOpts: ~p", [TargetName, VAV, SendOpts]),
Res = snmpm:async_set2(Id, TargetName, VAV, SendOpts),
reply(From, Res, Ref),
loop(S);
{{async_set, VAV}, From, Ref} ->
d("loop -> received async_set request"),
Res = [snmpm:async_set(Id, TargetName, VAV) ||
TargetName <- snmpm:which_agents(Id)],
reply(From, Res, Ref),
loop(S);
{{async_set, TargetName, VAV}, From, Ref} when is_list(TargetName) ->
d("loop -> received async_set request"),
Res = snmpm:async_set(Id, TargetName, VAV),
reply(From, Res, Ref),
loop(S);
%%
%% -- (sync) get-bulk-request --
%%
{{sync_get_bulk2, TargetName, NonRep, MaxRep, Oids, SendOpts}, From, Ref}
when is_list(TargetName) ->
d("loop -> received sync_get_bulk request with"
"~n TargetName: ~p"
"~n NonRep: ~w"
"~n MaxRep: ~w"
"~n Oids: ~p"
"~n SendOpts: ~p",
[TargetName, NonRep, MaxRep, Oids, SendOpts]),
Res = snmpm:sync_get_bulk2(Id, TargetName,
NonRep, MaxRep, Oids, SendOpts),
reply(From, Res, Ref),
loop(S);
%% No agent specified, so send it to all of them
{{sync_get_bulk, NonRep, MaxRep, Oids}, From, Ref} ->
d("loop -> received sync_get_bulk request with"
"~n NonRep: ~w"
"~n MaxRep: ~w"
"~n Oids: ~p", [NonRep, MaxRep, Oids]),
Res = [snmpm:sync_get_bulk(Id, TargetName, NonRep, MaxRep, Oids) ||
TargetName <- snmpm:which_agents(Id)],
reply(From, Res, Ref),
loop(S);
{{sync_get_bulk, TargetName, NonRep, MaxRep, Oids}, From, Ref} when is_list(TargetName) ->
d("loop -> received sync_get_bulk request with"
"~n TargetName: ~p"
"~n NonRep: ~w"
"~n MaxRep: ~w"
"~n Oids: ~p", [TargetName, NonRep, MaxRep, Oids]),
Res = snmpm:sync_get_bulk(Id, TargetName, NonRep, MaxRep, Oids),
reply(From, Res, Ref),
loop(S);
%%
%% -- (async) get-bulk-request --
%%
{{async_get_bulk2, TargetName, NonRep, MaxRep, Oids, SendOpts},
From, Ref} when is_list(TargetName) ->
d("loop -> received async_get_bulk2 request with"
"~n TargetName: ~p"
"~n NonRep: ~w"
"~n MaxRep: ~w"
"~n Oids: ~p"
"~n SendOpts: ~p",
[TargetName, NonRep, MaxRep, Oids, SendOpts]),
Res = snmpm:async_get_bulk2(Id, TargetName,
NonRep, MaxRep, Oids, SendOpts),
reply(From, Res, Ref),
loop(S);
%% No agent specified, so send it to all of them
{{async_get_bulk, NonRep, MaxRep, Oids}, From, Ref} ->
d("loop -> received async_get_bulk request with"
"~n NonRep: ~w"
"~n MaxRep: ~w"
"~n Oids: ~p", [NonRep, MaxRep, Oids]),
Res = [snmpm:async_get_bulk(Id, TargetName, NonRep, MaxRep, Oids) ||
TargetName <- snmpm:which_agents(Id)],
reply(From, Res, Ref),
loop(S);
{{async_get_bulk, TargetName, NonRep, MaxRep, Oids}, From, Ref} when is_list(TargetName) ->
d("loop -> received async_get_bulk request with"
"~n TargetName: ~p"
"~n NonRep: ~w"
"~n MaxRep: ~w"
"~n Oids: ~p", [TargetName, NonRep, MaxRep, Oids]),
Res = snmpm:async_get_bulk(Id, TargetName, NonRep, MaxRep, Oids),
reply(From, Res, Ref),
loop(S);
%%
%% -- logical name translation --
%%
{{name_to_oid, Name}, From, Ref} ->
d("loop -> received name_to_oid request for"
"~n Name: ~p", [Name]),
Res = snmpm:name_to_oid(Name),
reply(From, Res, Ref),
loop(S);
{{oid_to_name, Oid}, From, Ref} ->
d("loop -> received oid_to_name request for"
"~n Oid: ~p", [Oid]),
Res = snmpm:oid_to_name(Oid),
reply(From, Res, Ref),
loop(S);
{{purify_oid, Oid}, From, Ref} ->
d("loop -> received purify_oid request for"
"~n Oid: ~p", [Oid]),
Res = do_purify_oid(Oid),
reply(From, Res, Ref),
loop(S);
%% SNMP manager callback messages (from our callback API):
{handle_error, _Pid, ReqId, Reason} ->
d("loop -> received error callback from manager for ~w:"
"~n ~p", [ReqId, Reason]),
Parent ! {async_event, ReqId, {error, Reason}},
loop(S);
{handle_agent, _Pid, Addr, Port, SnmpInfo} ->
d("loop -> received agent callback from manager for ~n ~p:~w",
[Addr, Port]),
Parent ! {async_event, {Addr, Port}, {agent, SnmpInfo}},
loop(S);
{handle_pdu, _Pid, _TargetName, ReqId, SnmpResponse} ->
d("loop -> received pdu callback from manager for ~w", [ReqId]),
Parent ! {async_event, ReqId, {pdu, SnmpResponse}},
loop(S);
{handle_trap, _Pid, TargetName, SnmpTrap} ->
d("loop -> received trap callback from manager for "
"~n ~p",
"~n ~p",
[TargetName, SnmpTrap]),
Parent ! {async_event, TargetName, {trap, SnmpTrap}},
loop(S);
{handle_inform, Pid, TargetName, SnmpInform} ->
d("loop -> received inform callback from manager for "
"~n ~p",
"~n ~p",
[TargetName, SnmpInform]),
Parent ! {async_event, TargetName, {inform, Pid, SnmpInform}},
loop(S);
{handle_report, _Pid, TargetName, SnmpReport} ->
d("loop -> received report callback from manager for "
"~n ~p",
"~n ~p",
[TargetName, SnmpReport]),
Parent ! {async_event, TargetName, {report, SnmpReport}},
loop(S);
{handle_invalid_result, _Pid, In, Out} ->
d("loop -> received invalid result callback from manager for "
"~n In: ~p",
"~n Out: ~p", [In, Out]),
info("received invalid result message: "
"~n In: ~p"
"~n Out: ~p", [In, Out]),
loop(S);
{'EXIT', Parent, Reason} ->
d("received exit signal from parent: ~n~p", [Reason]),
info("received exit signal from parent: ~n~p", [Reason]),
exit(Reason);
Unknown ->
d("received unknown message: ~n~p", [Unknown]),
info("received unknown message: ~n~p", [Unknown]),
loop(S)
end.
%% -------------
do_purify_oid([A|T]) when is_atom(A) ->
case snmpm:name_to_oid(A) of
{ok, [Oid|_]} ->
verify_pure_oid(lists:flatten([Oid|T]));
{error, not_found} ->
{error, {not_found, A}};
{error, _} = Error ->
Error
end;
do_purify_oid(L) when is_list(L) ->
verify_pure_oid(lists:flatten(L));
do_purify_oid(X) ->
{error, {unpure_oid, X}}.
verify_pure_oid([]) ->
[];
verify_pure_oid([H | T]) when is_integer(H) andalso (H >= 0) ->
[H | verify_pure_oid(T)];
verify_pure_oid([H | _]) ->
throw({error, {not_pure_oid, H}}).
%% -------------
info(F, A) ->
error_logger:info_msg("TEST MGR USER " ++ F ++ "~n", A).
%% -------------
call(Req) ->
call(Req, 5000).
call(Req, To) when is_integer(To) ->
Ref = make_ref(),
?SERVER ! {Req, self(), Ref},
receive
{Reply, Ref} ->
Reply
after To ->
{error, timeout}
end.
reply(Pid, Reply, Ref) ->
d("reply -> entry with"
"~n Pid: ~p"
"~n Reply: ~p"
"~n Ref: ~p", [Pid, Reply, Ref]),
Pid ! {Reply, Ref}.
cast(Msg) ->
?SERVER ! {Msg, self()},
ok.
%%----------------------------------------------------------------------
%% User callback functions:
%%----------------------------------------------------------------------
handle_error(ReqId, Reason, UserPid) ->
UserPid ! {handle_error, self(), ReqId, Reason},
ignore.
handle_agent(Addr, Port, SnmpInfo, UserPid, UserData) ->
UserPid ! {handle_agent, self(), Addr, Port, SnmpInfo, UserData},
ignore.
handle_pdu(TargetName, ReqId, SnmpResponse, UserPid) ->
UserPid ! {handle_pdu, self(), TargetName, ReqId, SnmpResponse},
ignore.
handle_trap(TargetName, SnmpTrap, UserPid) ->
UserPid ! {handle_trap, self(), TargetName, SnmpTrap},
ignore.
handle_inform(TargetName, SnmpInform, UserPid) ->
UserPid ! {handle_inform, self(), TargetName, SnmpInform},
receive
{handle_inform_no_response, TargetName} ->
no_reply;
{handle_inform_response, TargetName} ->
ignore
end.
handle_report(TargetName, SnmpReport, UserPid) ->
UserPid ! {handle_report, self(), TargetName, SnmpReport},
ignore.
%%----------------------------------------------------------------------
%% Debug
%%----------------------------------------------------------------------
d(F) ->
d(F, []).
d(F, A) ->
d(get(debug), F, A).
d(true, F, A) ->
io:format("~w:" ++ F ++ "~n", [?SERVER|A]);
d(_, _, _) ->
ok.
