%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2013. 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%
%%
%%
%% Test example code under ../examples/code.
%%
-module(diameter_examples_SUITE).
-export([suite/0,
all/0]).
%% testcases
-export([compile/1,
enslave/1,
start/1,
traffic/1,
stop/1]).
-export([install/1,
call/1]).
-include("diameter.hrl").
%% ===========================================================================
-define(util, diameter_util).
%% The order here is significant and causes the server to listen
%% before the clients connect.
-define(NODES, [compile, server, client]).
%% Options to ct_slave:start/2.
-define(TIMEOUTS, [{T, 15000} || T <- [boot_timeout,
init_timeout,
start_timeout]]).
%% ===========================================================================
suite() ->
[{timetrap, {seconds, 45}}].
all() ->
[compile,
enslave,
start,
traffic,
stop].
%% ===========================================================================
%% compile/1
compile(Config) ->
Node = slave(hd(?NODES), here()),
[] = rpc:call(Node,
?MODULE,
install,
[proplists:get_value(priv_dir, Config)]).
%% Compile on another node since the code path may be modified.
install(PrivDir) ->
Top = install(here(), PrivDir),
Src = filename:join([Top, "examples", "code"]),
Files = find_files(Src, ".*\\.erl"),
[] = [{F,E} || F <- Files,
{error, _, _} = E <- [compile:file(F, [warnings_as_errors,
return_errors])]].
%% Copy include files into a temporary directory and adjust the code
%% path in order for example code to be able to include them with
%% include_lib. This is really only required when running in the reop
%% since generated includes, that the example code wants to
%% include_lib, are under src/gen and there's no way to get get the
%% preprocessor to find these otherwise. Generated hrls are only be
%% under include in an installation. ("Installing" them locally is
%% anathema.)
install(Dir, PrivDir) ->
%% Remove the path added by slave/1 (needed for the rpc:call/4 in
%% compile/1 to find ?MODULE) so the call to code:lib_dir/2 below
%% returns the installed path.
[Ebin | _] = code:get_path(),
true = code:del_path(Ebin),
Top = top(Dir, code:lib_dir(diameter)),
%% Create a new diameter/include in priv_dir, copy all includes
%% there: first the installed includes, then any we find in
%% ../include and ../src/gen.
Tmp = filename:join([PrivDir, "diameter"]),
TmpInc = filename:join([PrivDir, "diameter", "include"]),
TmpEbin = filename:join([PrivDir, "diameter", "ebin"]),
[] = [{T,E} || T <- [Tmp, TmpInc, TmpEbin],
{error, E} <- [file:make_dir(T)]],
Inc = filename:join([Top, "include"]),
Gen = filename:join([Top, "src", "gen"]),
Files = lists:append([find_files(F, ".*\\.hrl") || F <- [Inc, Gen]]),
[] = [{F,E} || F <- Files,
B <- [filename:basename(F)],
D <- [filename:join([TmpInc, B])],
{error, E} <- [file:copy(F,D)]],
%% Prepend the created directory just so that code:lib_dir/1 finds
%% it when compile:file/2 tries to resolve include_lib.
true = code:add_patha(TmpEbin),
Tmp = code:lib_dir(diameter), %% assert
%% Return the top directory containing examples/code.
Top.
find_files(Dir, RE) ->
filelib:fold_files(Dir, RE, false, fun cons/2, []).
cons(H,T) ->
[H|T].
%% enslave/1
%%
%% Start two nodes: one for the server, one for the client.
enslave(Config) ->
Dir = here(),
Nodes = [{N, slave(N, Dir)} || N <- tl(?NODES)],
?util:write_priv(Config, nodes, Nodes).
slave(Name, Dir) ->
{ok, Node} = ct_slave:start(Name, ?TIMEOUTS),
ok = rpc:call(Node,
code,
add_pathsa,
[[Dir, filename:join([Dir, "..", "ebin"])]]),
Node.
here() ->
filename:dirname(code:which(?MODULE)).
top(Dir, LibDir) ->
File = filename:join([Dir, "depend.sed"]), %% only in the repo
case filelib:is_regular(File) of
true -> filename:join([Dir, ".."]);
false -> LibDir
end.
%% start/1
start(server) ->
ok = diameter:start(),
ok = server:start(),
{ok, Ref} = server:listen(tcp),
[_] = ?util:lport(tcp, Ref, 20),
ok;
start(client) ->
ok = diameter:start(),
true = diameter:subscribe(client),
ok = client:start(),
{ok, Ref} = client:connect(tcp),
receive #diameter_event{info = {up, Ref, _, _, _}} -> ok end;
start(Config) ->
Nodes = ?util:read_priv(Config, nodes),
[] = [RC || {T,N} <- Nodes,
RC <- [rpc:call(N, ?MODULE, start, [T])],
RC /= ok].
%% traffic/1
%%
%% Send successful messages from client to server.
traffic(server) ->
ok;
traffic(client) ->
{_, MRef} = spawn_monitor(fun() -> call(100) end),
receive {'DOWN', MRef, process, _, Reason} -> Reason end;
traffic(Config) ->
Nodes = ?util:read_priv(Config, nodes),
[] = [RC || {T,N} <- Nodes,
RC <- [rpc:call(N, ?MODULE, traffic, [T])],
RC /= ok].
call(0) ->
exit(ok);
call(N) ->
{ok, _} = client:call(),
call(N-1).
%% stop/1
stop(Name)
when is_atom(Name) ->
{ok, _Node} = ct_slave:stop(Name),
ok;
stop(_Config) ->
[] = [RC || N <- ?NODES, RC <- [stop(N)], RC /= ok].
