%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1999-2010. 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%
%%
%%
-module(etrap_test_lib).
%%--------------- INCLUDES ---------------------------------------------
-include("etrap_test_lib.hrl").
-include_lib("cosTransactions/src/ETraP_Common.hrl").
%%--------------- EXPORTS ----------------------------------------------
-export([scratch_debug_fun/0,
activate_debug_fun/5,
update_debug_info/1,
deactivate_debug_fun/3,
eval_debug_fun/4,
set_debug_context/4]).
%%--------------- CONSTANTS/DEFINITIONS --------------------------------
-define(DEBUG_TAB, etrap_debug).
-record(debug_info, {id, function, type, file, line}).
%%--------------- DEBUG FUNCTIONS --------------------------------------
%% Managing conditional debug functions
%%
%% The main idea with the debug_fun's is to allow test programs
%% to control the internal behaviour of CosTransactions.
%%
%% First should calls to ?eval_debug_fun be inserted at well
%% defined places in CosTransaction's code. E.g. in critical situations
%% of startup, transaction commit, backups etc.
%%
%% Then compile CosTransactions with the compiler option 'debug'.
%%
%% In test programs ?activate_debug_fun should be called
%% in order to bind a fun to the debug identifier stated
%% in the call to ?eval_debug_fun.
scratch_debug_fun() ->
catch ets:delete(?DEBUG_TAB),
ets:new(?DEBUG_TAB,
[set, public, named_table, {keypos, 2}]).
activate_debug_fun(FunId, Fun, Type, File, Line) ->
io:format("Activiating ~p RETRIES: ~p WAIT: ~p~n",
[FunId, ?tr_max_retries, ?tr_comm_failure_wait]),
Info = #debug_info{id = FunId,
function = Fun,
type = Type,
file = File,
line = Line},
update_debug_info(Info).
update_debug_info(Info) ->
case catch ets:insert(?DEBUG_TAB, Info) of
{'EXIT', _} ->
scratch_debug_fun(),
ets:insert(?DEBUG_TAB, Info);
_ ->
ok
end,
ok.
deactivate_debug_fun(FunId, _File, _Line) ->
catch ets:delete(?DEBUG_TAB, FunId),
ok.
eval_debug_fun(FunId, Env, File, Line) ->
case catch ets:lookup(?DEBUG_TAB, FunId) of
[] ->
ok;
[Info] ->
Fun = Info#debug_info.function,
case Info#debug_info.type of
transient ->
deactivate_debug_fun(FunId, File, Line);
_->
ok
end,
io:format("Running debug fun ~p:~p (LINE: ~p)~n", [File, FunId, Line]),
Fun(Env);
{'EXIT', _R} ->
ok
end.
set_debug_context([], [], _, _)-> ok;
set_debug_context([], _, _, _)->
ets:delete(?DEBUG_TAB),
exit("failed transactions_SUITE. Bad configuration.");
set_debug_context(_, [], _, _)->
ets:delete(?DEBUG_TAB),
exit("failed transactions_SUITE Bad configuration.");
set_debug_context([RHead|RTail], [CHead|CTail], File, Line)->
write_context(RHead, CHead, File, Line),
set_debug_context(RTail, CTail, File, Line).
write_context(_Resource, [], _, _)-> ok;
write_context(Resource, [{Func, Fun, Type}|PTail], File, Line)->
etrap_test_lib:activate_debug_fun({Resource, Func},
Fun, Type,
File, Line),
write_context(Resource, PTail, File, Line);
write_context(_,_, _, _) ->
ets:delete(?DEBUG_TAB),
exit("failed transactions_SUITE. Bad configuration.").
%%--------------- END OF MODULE ----------------------------------------
