%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1998-2011. 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: Test server support functions.
%%%-------------------------------------------------------------------
-module(test_server_sup).
-export([timetrap/2, timetrap/3, timetrap_cancel/1, capture_get/1, messages_get/1,
timecall/3, call_crash/5, app_test/2, check_new_crash_dumps/0,
cleanup_crash_dumps/0, crash_dump_dir/0, tar_crash_dumps/0,
get_username/0, get_os_family/0,
hostatom/0, hostatom/1, hoststr/0, hoststr/1,
framework_call/2,framework_call/3,framework_call/4,
format_loc/1, package_str/1, package_atom/1,
call_trace/1]).
-include("test_server_internal.hrl").
-define(crash_dump_tar,"crash_dumps.tar.gz").
-define(src_listing_ext, ".src.html").
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% timetrap(Timeout,Scale,Pid) -> Handle
%% Handle = term()
%%
%% Creates a time trap, that will kill the given process if the
%% trap is not cancelled with timetrap_cancel/1, within Timeout
%% milliseconds.
%% Scale says if the time should be scaled up to compensate for
%% delays during the test (e.g. if cover is running).
timetrap(Timeout0, Pid) ->
timetrap(Timeout0, true, Pid).
timetrap(Timeout0, Scale, Pid) ->
process_flag(priority, max),
Timeout = if not Scale -> Timeout0;
true -> test_server:timetrap_scale_factor() * Timeout0
end,
receive
after trunc(Timeout) ->
Line = test_server:get_loc(Pid),
Mon = erlang:monitor(process, Pid),
Trap =
case get(test_server_init_or_end_conf) of
undefined ->
{timetrap_timeout,trunc(Timeout),Line};
InitOrEnd ->
{timetrap_timeout,trunc(Timeout),Line,InitOrEnd}
end,
exit(Pid,Trap),
receive
{'DOWN', Mon, process, Pid, _} ->
ok
after 10000 ->
%% Pid is probably trapping exits, hit it harder...
catch error_logger:warning_msg("Testcase process ~p not "
"responding to timetrap "
"timeout:~n"
" ~p.~n"
"Killing testcase...~n",
[Pid, Trap]),
exit(Pid, kill)
end
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% timetrap_cancel(Handle) -> ok
%% Handle = term()
%%
%% Cancels a time trap.
timetrap_cancel(Handle) ->
unlink(Handle),
MonRef = erlang:monitor(process, Handle),
exit(Handle, kill),
receive {'DOWN',MonRef,_,_,_} -> ok after 2000 -> ok end.
capture_get(Msgs) ->
receive
{captured,Msg} ->
capture_get([Msg|Msgs])
after 0 ->
lists:reverse(Msgs)
end.
messages_get(Msgs) ->
receive
Msg ->
messages_get([Msg|Msgs])
after 0 ->
lists:reverse(Msgs)
end.
timecall(M, F, A) ->
Befor = erlang:now(),
Val = apply(M, F, A),
After = erlang:now(),
Elapsed =
(element(1,After)*1000000+element(2,After)+element(3,After)/1000000)-
(element(1,Befor)*1000000+element(2,Befor)+element(3,Befor)/1000000),
{Elapsed, Val}.
call_crash(Time,Crash,M,F,A) ->
OldTrapExit = process_flag(trap_exit,true),
Pid = spawn_link(M,F,A),
Answer =
receive
{'EXIT',Crash} ->
ok;
{'EXIT',Pid,Crash} ->
ok;
{'EXIT',_Reason} when Crash==any ->
ok;
{'EXIT',Pid,_Reason} when Crash==any ->
ok;
{'EXIT',Reason} ->
test_server:format(12, "Wrong crash reason. Wanted ~p, got ~p.",
[Crash, Reason]),
exit({wrong_crash_reason,Reason});
{'EXIT',Pid,Reason} ->
test_server:format(12, "Wrong crash reason. Wanted ~p, got ~p.",
[Crash, Reason]),
exit({wrong_crash_reason,Reason});
{'EXIT',OtherPid,Reason} when OldTrapExit == false ->
exit({'EXIT',OtherPid,Reason})
after do_trunc(Time) ->
exit(call_crash_timeout)
end,
process_flag(trap_exit,OldTrapExit),
Answer.
do_trunc(infinity) -> infinity;
do_trunc(T) -> trunc(T).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% app_test/2
%%
%% Checks one applications .app file for obvious errors.
%% Checks..
%% * .. required fields
%% * .. that all modules specified actually exists
%% * .. that all requires applications exists
%% * .. that no module included in the application has export_all
%% * .. that all modules in the ebin/ dir is included
%% (This only produce a warning, as all modules does not
%% have to be included (If the `pedantic' option isn't used))
app_test(Application, Mode) ->
case is_app(Application) of
{ok, AppFile} ->
do_app_tests(AppFile, Application, Mode);
Error ->
test_server:fail(Error)
end.
is_app(Application) ->
case file:consult(filename:join([code:lib_dir(Application),"ebin",
atom_to_list(Application)++".app"])) of
{ok, [{application, Application, AppFile}] } ->
{ok, AppFile};
_ ->
test_server:format(minor,
"Application (.app) file not found, "
"or it has very bad syntax.~n"),
{error, not_an_application}
end.
do_app_tests(AppFile, AppName, Mode) ->
DictList=
[
{missing_fields, []},
{missing_mods, []},
{superfluous_mods_in_ebin, []},
{export_all_mods, []},
{missing_apps, []}
],
fill_dictionary(DictList),
%% An appfile must (?) have some fields..
check_fields([description, modules, registered, applications], AppFile),
%% Check for missing and extra modules.
{value, {modules, Mods}}=lists:keysearch(modules, 1, AppFile),
EBinList=lists:sort(get_ebin_modnames(AppName)),
{Missing, Extra} = common(lists:sort(Mods), EBinList),
put(superfluous_mods_in_ebin, Extra),
put(missing_mods, Missing),
%% Check that no modules in the application has export_all.
app_check_export_all(Mods),
%% Check that all specified applications exists.
{value, {applications, Apps}}=
lists:keysearch(applications, 1, AppFile),
check_apps(Apps),
A=check_dict(missing_fields, "Inconsistent app file, "
"missing fields"),
B=check_dict(missing_mods, "Inconsistent app file, "
"missing modules"),
C=check_dict_tolerant(superfluous_mods_in_ebin, "Inconsistent app file, "
"Modules not included in app file.", Mode),
D=check_dict(export_all_mods, "Inconsistent app file, "
"Modules have `export_all'."),
E=check_dict(missing_apps, "Inconsistent app file, "
"missing applications."),
erase_dictionary(DictList),
case A+B+C+D+E of
5 ->
ok;
_ ->
test_server:fail()
end.
app_check_export_all([]) ->
ok;
app_check_export_all([Mod|Mods]) ->
case catch apply(Mod, module_info, [compile]) of
{'EXIT', {undef,_}} ->
app_check_export_all(Mods);
COpts ->
case lists:keysearch(options, 1, COpts) of
false ->
app_check_export_all(Mods);
{value, {options, List}} ->
case lists:member(export_all, List) of
true ->
put(export_all_mods, [Mod|get(export_all_mods)]),
app_check_export_all(Mods);
false ->
app_check_export_all(Mods)
end
end
end.
%% Given two sorted lists, L1 and L2, returns {NotInL2, NotInL1},
%% NotInL2 is the elements of L1 which don't occurr in L2,
%% NotInL1 is the elements of L2 which don't ocurr in L1.
common(L1, L2) ->
common(L1, L2, [], []).
common([X|Rest1], [X|Rest2], A1, A2) ->
common(Rest1, Rest2, A1, A2);
common([X|Rest1], [Y|Rest2], A1, A2) when X < Y ->
common(Rest1, [Y|Rest2], [X|A1], A2);
common([X|Rest1], [Y|Rest2], A1, A2) ->
common([X|Rest1], Rest2, A1, [Y|A2]);
common([], L, A1, A2) ->
{A1, L++A2};
common(L, [], A1, A2) ->
{L++A1, A2}.
check_apps([]) ->
ok;
check_apps([App|Apps]) ->
case is_app(App) of
{ok, _AppFile} ->
ok;
{error, _} ->
put(missing_apps, [App|get(missing_apps)])
end,
check_apps(Apps).
check_fields([], _AppFile) ->
ok;
check_fields([L|Ls], AppFile) ->
check_field(L, AppFile),
check_fields(Ls, AppFile).
check_field(FieldName, AppFile) ->
case lists:keymember(FieldName, 1, AppFile) of
true ->
ok;
false ->
put(missing_fields, [FieldName|get(missing_fields)]),
ok
end.
check_dict(Dict, Reason) ->
case get(Dict) of
[] ->
1; % All ok.
List ->
io:format("** ~s (~s) ->~n~p~n",[Reason, Dict, List]),
0
end.
check_dict_tolerant(Dict, Reason, Mode) ->
case get(Dict) of
[] ->
1; % All ok.
List ->
io:format("** ~s (~s) ->~n~p~n",[Reason, Dict, List]),
case Mode of
pedantic ->
0;
_ ->
1
end
end.
get_ebin_modnames(AppName) ->
Wc=filename:join([code:lib_dir(AppName),"ebin",
"*"++code:objfile_extension()]),
TheFun=fun(X, Acc) ->
[list_to_atom(filename:rootname(
filename:basename(X)))|Acc] end,
_Files=lists:foldl(TheFun, [], filelib:wildcard(Wc)).
%%
%% This function removes any erl_crash_dump* files found in the
%% test server directory. Done only once when the test server
%% is started.
%%
cleanup_crash_dumps() ->
Dir = crash_dump_dir(),
Dumps = filelib:wildcard(filename:join(Dir, "erl_crash_dump*")),
delete_files(Dumps).
crash_dump_dir() ->
filename:dirname(code:which(?MODULE)).
tar_crash_dumps() ->
Dir = crash_dump_dir(),
case filelib:wildcard(filename:join(Dir, "erl_crash_dump*")) of
[] -> {error,no_crash_dumps};
Dumps ->
TarFileName = filename:join(Dir,?crash_dump_tar),
{ok,Tar} = erl_tar:open(TarFileName,[write,compressed]),
lists:foreach(
fun(File) ->
ok = erl_tar:add(Tar,File,filename:basename(File),[])
end,
Dumps),
ok = erl_tar:close(Tar),
delete_files(Dumps),
{ok,TarFileName}
end.
check_new_crash_dumps() ->
Dir = crash_dump_dir(),
Dumps = filelib:wildcard(filename:join(Dir, "erl_crash_dump*")),
case length(Dumps) of
0 ->
ok;
Num ->
test_server_ctrl:format(minor,
"Found ~p crash dumps:~n", [Num]),
append_files_to_logfile(Dumps),
delete_files(Dumps)
end.
append_files_to_logfile([]) -> ok;
append_files_to_logfile([File|Files]) ->
NodeName=from($., File),
test_server_ctrl:format(minor, "Crash dump from node ~p:~n",[NodeName]),
Fd=get(test_server_minor_fd),
case file:read_file(File) of
{ok, Bin} ->
case file:write(Fd, Bin) of
ok ->
ok;
{error,Error} ->
%% Write failed. The following io:format/3 will probably also
%% fail, but in that case it will throw an exception so that
%% we will be aware of the problem.
io:format(Fd, "Unable to write the crash dump "
"to this file: ~p~n", [file:format_error(Error)])
end;
_Error ->
io:format(Fd, "Failed to read: ~s\n", [File])
end,
append_files_to_logfile(Files).
delete_files([]) -> ok;
delete_files([File|Files]) ->
io:format("Deleting file: ~s~n", [File]),
case file:delete(File) of
{error, _} ->
case file:rename(File, File++".old") of
{error, Error} ->
io:format("Could neither delete nor rename file "
"~s: ~s.~n", [File, Error]);
_ ->
ok
end;
_ ->
ok
end,
delete_files(Files).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% erase_dictionary(Vars) -> ok
%% Vars = [atom(),...]
%%
%% Takes a list of dictionary keys, KeyVals, erases
%% each key and returns ok.
erase_dictionary([{Var, _Val}|Vars]) ->
erase(Var),
erase_dictionary(Vars);
erase_dictionary([]) ->
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% fill_dictionary(KeyVals) -> void()
%% KeyVals = [{atom(),term()},...]
%%
%% Takes each Key-Value pair, and inserts it in the process dictionary.
fill_dictionary([{Var,Val}|Vars]) ->
put(Var,Val),
fill_dictionary(Vars);
fill_dictionary([]) ->
[].
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% get_username() -> UserName
%%
%% Returns the current user
get_username() ->
getenv_any(["USER","USERNAME"]).
getenv_any([Key|Rest]) ->
case catch os:getenv(Key) of
String when is_list(String) -> String;
false -> getenv_any(Rest)
end;
getenv_any([]) -> "".
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% get_os_family() -> OsFamily
%%
%% Returns the OS family
get_os_family() ->
case os:type() of
{OsFamily,_OsName} -> OsFamily;
OsFamily -> OsFamily
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% hostatom()/hostatom(Node) -> Host; atom()
%% hoststr() | hoststr(Node) -> Host; string()
%%
%% Returns the OS family
hostatom() ->
hostatom(node()).
hostatom(Node) ->
list_to_atom(hoststr(Node)).
hoststr() ->
hoststr(node()).
hoststr(Node) when is_atom(Node) ->
hoststr(atom_to_list(Node));
hoststr(Node) when is_list(Node) ->
from($@, Node).
from(H, [H | T]) -> T;
from(H, [_ | T]) -> from(H, T);
from(_H, []) -> [].
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% framework_call(Callback,Func,Args,DefaultReturn) -> Return | DefaultReturn
%%
%% Calls the given Func in Callback
framework_call(Func,Args) ->
framework_call(Func,Args,ok).
framework_call(Func,Args,DefaultReturn) ->
CB = os:getenv("TEST_SERVER_FRAMEWORK"),
framework_call(CB,Func,Args,DefaultReturn).
framework_call(FW,_Func,_Args,DefaultReturn)
when FW =:= false; FW =:= "undefined" ->
DefaultReturn;
framework_call(Callback,Func,Args,DefaultReturn) ->
Mod = list_to_atom(Callback),
case code:is_loaded(Mod) of
false -> code:load_file(Mod);
_ -> ok
end,
case erlang:function_exported(Mod,Func,length(Args)) of
true ->
put(test_server_loc, {Mod,Func,framework}),
EH = fun(Reason) -> exit({fw_error,{Mod,Func,Reason}}) end,
try apply(Mod,Func,Args) of
Result ->
Result
catch
exit:Why ->
EH(Why);
error:Why ->
EH({Why,erlang:get_stacktrace()});
throw:Why ->
EH(Why)
end;
false ->
DefaultReturn
end.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% format_loc(Loc) -> string()
%%
%% Formats the printout of the line of code read from
%% process dictionary (test_server_loc). Adds link to
%% correct line in source code.
format_loc([{Mod,Func,Line}]) ->
[format_loc1({Mod,Func,Line})];
format_loc([{Mod,Func,Line}|Rest]) ->
["[",format_loc1({Mod,Func,Line}),",\n"|format_loc1(Rest)];
format_loc([{Mod,LineOrFunc}]) ->
format_loc({Mod,LineOrFunc});
format_loc({Mod,Func}) when is_atom(Func) ->
io_lib:format("{~s,~w}",[package_str(Mod),Func]);
format_loc({Mod,Line}) when is_integer(Line) ->
%% ?line macro is used
ModStr = package_str(Mod),
case lists:reverse(ModStr) of
[$E,$T,$I,$U,$S,$_|_] ->
io_lib:format("{~s,<a href=\"~s~s#~w\">~w</a>}",
[ModStr,downcase(ModStr),?src_listing_ext,
round_to_10(Line),Line]);
_ ->
io_lib:format("{~s,~w}",[ModStr,Line])
end;
format_loc(Loc) ->
io_lib:format("~p",[Loc]).
format_loc1([{Mod,Func,Line}]) ->
[" ",format_loc1({Mod,Func,Line}),"]"];
format_loc1([{Mod,Func,Line}|Rest]) ->
[" ",format_loc1({Mod,Func,Line}),",\n"|format_loc1(Rest)];
format_loc1({Mod,Func,Line}) ->
ModStr = package_str(Mod),
case lists:reverse(ModStr) of
[$E,$T,$I,$U,$S,$_|_] ->
io_lib:format("{~s,~w,<a href=\"~s~s#~w\">~w</a>}",
[ModStr,Func,downcase(ModStr),?src_listing_ext,
round_to_10(Line),Line]);
_ ->
io_lib:format("{~s,~w,~w}",[ModStr,Func,Line])
end.
round_to_10(N) when (N rem 10) == 0 ->
N;
round_to_10(N) ->
trunc(N/10)*10.
downcase(S) -> downcase(S, []).
downcase([Uc|Rest], Result) when $A =< Uc, Uc =< $Z ->
downcase(Rest, [Uc-$A+$a|Result]);
downcase([C|Rest], Result) ->
downcase(Rest, [C|Result]);
downcase([], Result) ->
lists:reverse(Result).
package_str(Mod) when is_atom(Mod) ->
atom_to_list(Mod);
package_str(Mod) when is_list(Mod), is_atom(hd(Mod)) ->
%% convert [s1,s2] -> "s1.s2"
[_|M] = lists:flatten(["."++atom_to_list(S) || S <- Mod]),
M;
package_str(Mod) when is_list(Mod) ->
Mod.
package_atom(Mod) when is_atom(Mod) ->
Mod;
package_atom(Mod) when is_list(Mod), is_atom(hd(Mod)) ->
list_to_atom(package_str(Mod));
package_atom(Mod) when is_list(Mod) ->
list_to_atom(Mod).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% call_trace(TraceSpecFile) -> ok
%%
%% Read terms on format {m,Mod} | {f,Mod,Func}
%% from TraceSpecFile and enable call trace for
%% specified functions.
call_trace(TraceSpec) ->
case catch try_call_trace(TraceSpec) of
{'EXIT',Reason} ->
erlang:display(Reason),
exit(Reason);
Ok ->
Ok
end.
try_call_trace(TraceSpec) ->
case file:consult(TraceSpec) of
{ok,Terms} ->
dbg:tracer(),
%% dbg:p(self(), [p, m, sos, call]),
dbg:p(self(), [sos, call]),
lists:foreach(fun({m,M}) ->
case dbg:tpl(M,[{'_',[],[{return_trace}]}]) of
{error,What} -> exit({error,{tracing_failed,What}});
_ -> ok
end;
({f,M,F}) ->
case dbg:tpl(M,F,[{'_',[],[{return_trace}]}]) of
{error,What} -> exit({error,{tracing_failed,What}});
_ -> ok
end;
(Huh) ->
exit({error,{unrecognized_trace_term,Huh}})
end, Terms),
ok;
{_,Error} ->
exit({error,{tracing_failed,TraceSpec,Error}})
end.
