%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2008-2011. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%----------------------------------------------------------------
%% Purpose:Test Suite for the 'pg2' module.
%%-----------------------------------------------------------------
-module(pg2_SUITE).
-include_lib("common_test/include/ct.hrl").
-define(datadir, ?config(data_dir, Config)).
-define(privdir, ?config(priv_dir, Config)).
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
init_per_testcase/2, end_per_testcase/2]).
-export([
otp_7277/1, otp_8259/1, otp_8653/1,
compat/1, basic/1]).
% Default timetrap timeout (set in init_per_testcase).
-define(default_timeout, ?t:minutes(1)).
-define(TESTCASE, testcase_name).
-define(testcase, ?config(?TESTCASE, Config)).
%% Internal export.
-export([mk_part_node_and_group/3, part2/4,
mk_part_node/3, part1/5, p_init/3, start_proc/1, sane/0]).
init_per_testcase(Case, Config) ->
?line Dog = ?t:timetrap(?default_timeout),
[{?TESTCASE, Case}, {watchdog, Dog} | Config].
end_per_testcase(_Case, _Config) ->
test_server_ctrl:kill_slavenodes(),
Dog = ?config(watchdog, _Config),
test_server:timetrap_cancel(Dog),
ok.
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
[{group, tickets}].
groups() ->
[{tickets, [],
[otp_7277, otp_8259, otp_8653, compat, basic]}].
init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
otp_7277(doc) ->
"OTP-7277. Bugfix leave().";
otp_7277(suite) -> [];
otp_7277(Config) when is_list(Config) ->
?line ok = pg2:create(a),
?line ok = pg2:create(b),
P = spawn(forever()),
?line ok = pg2:join(a, P),
?line ok = pg2:leave(b, P),
?line true = exit(P, kill),
case {pg2:get_members(a), pg2:get_local_members(a)} of
{[], []} ->
ok;
_ ->
timer:sleep(100),
?line [] = pg2:get_members(a),
?line [] = pg2:get_local_members(a)
end,
?line _ = pg2:delete(a),
?line _ = pg2:delete(b),
ok.
-define(UNTIL(Seq), loop_until_true(fun() -> Seq end, Config)).
-define(UNTIL_LOOP, 300).
otp_8653(suite) -> [];
otp_8653(doc) ->
["OTP-8259. Member was not removed after being killed."];
otp_8653(Config) when is_list(Config) ->
Timeout = 15,
?line Dog = test_server:timetrap({seconds,Timeout}),
?line [A, B, C] = start_nodes([a, b, c], peer, Config),
?line wait_for_ready_net(Config),
% make b and c connected, partitioned from node() and a
?line rpc_cast(B, ?MODULE, part2, [Config, node(), A, C]),
?line ?UNTIL(is_ready_partition(Config)),
% Connect to the other partition.
?line pong = net_adm:ping(B),
timer:sleep(100),
?line pong = net_adm:ping(C),
?line _ = global:sync(),
?line [A, B, C] = lists:sort(nodes()),
G = pg2_otp_8653,
?line ?UNTIL(begin
GA = lists:sort(rpc:call(A, pg2, get_members, [G])),
GB = lists:sort(rpc:call(B, pg2, get_members, [G])),
GC = lists:sort(rpc:call(C, pg2, get_members, [G])),
GT = lists:sort(pg2:get_members(G)),
GA =:= GB andalso
GB =:= GC andalso
GC =:= GT andalso
8 =:= length(GA)
end),
?line ok = pg2:delete(G),
?line stop_nodes([A,B,C]),
?line test_server:timetrap_cancel(Dog),
ok.
part2(Config, Main, A, C) ->
Function = mk_part_node_and_group,
case catch begin
make_partition(Config, [Main, A], [node(), C], Function)
end
of
ok -> ok
end.
mk_part_node_and_group(File, MyPart0, Config) ->
touch(File, "start"), % debug
MyPart = lists:sort(MyPart0),
?UNTIL(is_node_in_part(File, MyPart)),
G = pg2_otp_8653,
Pid = spawn(forever()),
ok = pg2:create(G),
_ = [ok = pg2:join(G, Pid) || _ <- [1,1]],
touch(File, "done").
otp_8259(suite) -> [];
otp_8259(doc) ->
["OTP-8259. Member was not removed after being killed."];
otp_8259(Config) when is_list(Config) ->
Timeout = 15,
?line Dog = test_server:timetrap({seconds,Timeout}),
?line [A, B, C] = start_nodes([a, b, c], peer, Config),
?line wait_for_ready_net(Config),
G = pg2_otp_8259,
Name = otp_8259_a_global_name,
% start different processes in both partitions
?line {Pid, yes} = rpc:call(A, ?MODULE, start_proc, [Name]),
?line ok = pg2:create(G),
?line ok = pg2:join(G, Pid),
% make b and c connected, partitioned from node() and a
?line rpc_cast(B, ?MODULE, part1, [Config, node(), A, C, Name]),
?line ?UNTIL(is_ready_partition(Config)),
% Connect to the other partition.
% The resolver on node b will be called.
?line pong = net_adm:ping(B),
timer:sleep(100),
?line pong = net_adm:ping(C),
?line _ = global:sync(),
?line [A, B, C] = lists:sort(nodes()),
%% Pid has been killed by the resolver.
%% Pid has been removed from pg2 on all nodes, in particular node B.
?line ?UNTIL([] =:= rpc:call(B, pg2, get_members, [G])),
?line ?UNTIL([] =:= pg2:get_members(G)),
?line ?UNTIL([] =:= rpc:call(A, pg2, get_members, [G])),
?line ?UNTIL([] =:= rpc:call(C, pg2, get_members, [G])),
?line ok = pg2:delete(G),
?line stop_nodes([A,B,C]),
?line test_server:timetrap_cancel(Dog),
ok.
part1(Config, Main, A, C, Name) ->
case catch begin
make_partition(Config, [Main, A], [node(), C]),
?line {_Pid, yes} = start_proc(Name)
end of
{_, yes} -> ok
end.
start_proc(Name) ->
Pid = spawn(?MODULE, p_init, [self(), Name, node()]),
receive
{Pid, Res} -> {Pid, Res}
end.
p_init(Parent, Name, TestServer) ->
Resolve = fun(_Name, Pid1, Pid2) ->
%% The pid on node a will be chosen.
[{_,Min}, {_,Max}] =
lists:sort([{node(Pid1),Pid1}, {node(Pid2),Pid2}]),
%% b is connected to test_server.
%% exit(Min, kill), % would ping a
rpc:cast(TestServer, erlang, exit, [Min, kill]),
Max
end,
X = global:register_name(Name, self(), Resolve),
Parent ! {self(),X},
loop().
loop() ->
receive
die ->
exit(normal)
end.
compat(suite) -> [];
compat(doc) ->
["OTP-8259. Check that 'exchange' and 'del_member' work."];
compat(Config) when is_list(Config) ->
case ?t:is_release_available("r13b") of
true ->
Timeout = 15,
?line Dog = test_server:timetrap({seconds,Timeout}),
Pid = spawn(forever()),
G = a,
?line ok = pg2:create(G),
?line ok = pg2:join(G, Pid),
?line ok = pg2:join(G, Pid),
?line {ok, A} = start_node_rel(r13, r13b, slave),
?line pong = net_adm:ping(A),
?line wait_for_ready_net(Config),
?line {ok, _} = rpc:call(A, pg2, start, []),
?line ?UNTIL([Pid,Pid] =:= rpc:call(A, pg2, get_members, [a])),
?line true = exit(Pid, kill),
?line ?UNTIL([] =:= pg2:get_members(a)),
?line ?UNTIL([] =:= rpc:call(A, pg2, get_members, [a])),
?t:stop_node(A),
?line test_server:timetrap_cancel(Dog);
false ->
{skipped, "No support for old node"}
end.
basic(suite) -> [];
basic(doc) ->
["OTP-8259. Some basic tests."];
basic(Config) when is_list(Config) ->
_ = [pg2:delete(G) || G <- pg2:which_groups()],
?line _ = [do(Cs, T, Config) || {T,Cs} <- ts()],
ok.
ts() ->
[
{t1,
[{create,[a],ignore},
{which_groups,[],[a]},
{get_closest_pid,[a],{error, {no_process, a}}},
{delete,[a],ignore}]},
{t2,
[{create,[a],ignore},
{join,[a,self()],ok},
{get_closest_pid,[a],self()},
{delete,[a],ignore}]},
{t3,
[{create,[a],ignore},
{new,p1},
{leave,[a,p1],ok},
{join,[b,p1],{error,{no_such_group,b}}},
{leave,[b,p1],{error,{no_such_group,b}}},
{get_members,[c],{error,{no_such_group,c}}},
{get_local_members,[c],{error,{no_such_group,c}}},
{join,[a,p1],ok},
{leave,[a,p1],ok},
{join,[a,p1],ok},
{join,[a,p1],ok},
{create,[a],ignore},
{get_closest_pid,[a],p1},
{leave,[a,p1],ok},
{get_closest_pid,[a],p1},
{leave,[a,p1],ok},
{get_closest_pid,[a],{error,{no_process, a}}},
{kill,p1},
{delete,[a],ignore}]},
{t4,
[{create,[a],ignore},
{new,p1},
{join,[a,p1],ok},
{get_members,[a],[p1]},
{get_local_members,[a],[p1]},
{kill,p1},
{get_members,[a],[]},
{get_local_members,[a],[]},
{delete,[a],ignore}]},
{t5,
[{create,[a],ignore},
{nodeup,n1},
{create,[a],ignore},
{join,[a,self()],ok},
{new,n1,p1},
{n1,{create,[b],ignore}},
{join,[a,p1],ok},
{join,[b,p1],ok},
{n1,{which_groups,[],[a,b]}},
{n1,{join,[a,p1],ok}},
{n1,{join,[b,p1],ok}},
{leave,[a,self()],ok},
{n1,{leave,[a,self()],ok}}, % noop
{n1,{leave,[b,p1],ok}},
{leave,[b,p1],ok},
{kill,n1,p1},
{nodedown,n1},
{delete,[b],ignore},
{delete,[a],ignore}]},
{t6,
[{create,[a],ignore}, % otp_7277
{create,[b],ignore},
{new,p},
{join,[a,p],ok},
{leave,[b,p],ok},
{kill,p},
{get_members,[a],[]},
{get_local_members,[a],[]},
{delete,[a],ignore},
{delete,[b],ignore}]},
{t7, % p1 joins twice, the new node gets informed about that
[{create,[a],ignore},
{new,p1},
{join,[a,p1],ok},
{join,[a,p1],ok},
{get_members,[a],[p1,p1]},
{get_local_members,[a],[p1,p1]},
{nodeup,n1},
{leave,[a,p1],ok},
{get_members,[a],[p1]},
{get_local_members,[a],[p1]},
{n1,{get_members,[a],[p1]}},
{leave,[a,p1],ok},
{get_members,[a],[]},
{n1,{get_members,[a],[]}},
{nodedown,n1},
{delete,[a],ignore},
{kill,p1}]},
{t8,
[{create,[a],ignore},
{new,p1},
{join,[a,p1],ok},
{join,[a,p1],ok},
{delete,[a],ignore},
{get_members,[a],{error,{no_such_group,a}}},
{kill,p1}]}
].
do(Cs, T, Config) ->
?t:format("*** Test ~p ***~n", [T]),
{ok,T} = (catch {do(Cs, [], [], Config),T}).
do([{nodeup,N} | Cs], Ps, Ns, Config) ->
[TestNode] = start_nodes([N], peer, Config),
pr(node(), {nodeup,N,TestNode}),
global:sync(),
timer:sleep(100),
{ok,_} = rpc:call(TestNode, pg2, start, []),
NNs = [{N,TestNode} | Ns],
sane(NNs),
do(Cs, Ps, NNs, Config);
do([{nodedown,N}=C | Cs], Ps, Ns, Config) ->
{N, TestNode} = lists:keyfind(N, 1, Ns),
stop_node(TestNode),
timer:sleep(100),
pr(node(), C),
do(Cs, Ps, lists:keydelete(N, 1, Ns), Config);
do([{new,P} | Cs], Ps, Ns, Config) ->
NPs = new_proc(node(), P, Ps, Ns),
do(Cs, NPs, Ns, Config);
do([{new,N,P} | Cs], Ps, Ns, Config) ->
NPs = new_proc(N, P, Ps, Ns),
do(Cs, NPs, Ns, Config);
do([{kill,P} | Cs], Ps, Ns, Config) ->
NPs = killit(node(), P, Ps, Ns),
do(Cs, NPs, Ns, Config);
do([{kill,N,P} | Cs], Ps, Ns, Config) ->
NPs = killit(N, P, Ps, Ns),
do(Cs, NPs, Ns, Config);
do([{Node,{_,_,_}=C} | Cs], Ps, Ns, Config) ->
doit(Node, C, Ps, Ns),
do(Cs, Ps, Ns, Config);
do([C | Cs], Ps, Ns, Config) ->
doit(node(), C, Ps, Ns),
do(Cs, Ps, Ns, Config);
do([], Ps, Ns, _Config) ->
[] = Ns,
[] = Ps,
[] = pg2:which_groups(),
[] = ets:tab2list(pg2_table),
[] = nodes(),
ok.
doit(N, C, Ps, Ns) ->
Node = get_node(N, Ns),
pr(Node, C),
{F,As,R} = replace_pids(C, Ps),
case rpc:call(Node, erlang, apply, [pg2, F, As]) of
Result when Result =:= R orelse R =:= ignore ->
sane(Ns);
Else ->
?t:format("~p and ~p: expected ~p, but got ~p~n",
[F, As, R, Else]),
throw({error,{F, As, R, Else}})
end.
new_proc(N, P, Ps, Ns) ->
Node = get_node(N, Ns),
Pid = rpc:call(Node, erlang, spawn, [forever()]),
pr(Node, {new,P,Pid}),
[{P,Pid}|Ps].
killit(N, P, Ps, Ns) ->
{P, Pid} = lists:keyfind(P, 1, Ps),
Node = get_node(N, Ns),
pr(Node, {kill,P,Pid}),
rpc:call(Node, erlang, exit, [Pid, kill]),
timer:sleep(100),
sane(Ns),
lists:keydelete(P, 1, Ps).
pr(Node, C) ->
_ = [?t:format("~p: ", [Node]) || Node =/= node()],
?t:format("do ~p~n", [C]).
get_node(N, Ns) ->
if
N =:= node() ->
node();
true ->
{N, TestNode} = lists:keyfind(N, 1, Ns),
TestNode
end.
forever() ->
fun() -> receive after infinity -> ok end end.
replace_pids(T, Ps) when is_tuple(T) ->
list_to_tuple(replace_pids(tuple_to_list(T), Ps));
replace_pids([E | Es], Ps) ->
[replace_pids(E, Ps) | replace_pids(Es, Ps)];
replace_pids(A, Ps) ->
case lists:keyfind(A, 1, Ps) of
{A, Pid} ->
Pid;
_ ->
A
end.
sane(Ns) ->
Nodes = [node()] ++ [NN || {_,NN} <- Ns],
_ = [?t:format("~p, pg2_table:~n ~p~n", % debug
[N, rpc:call(N, ets, tab2list, [pg2_table])]) ||
N <- Nodes],
R = [case rpc:call(Node, ?MODULE, sane, []) of
{'EXIT',Error} ->
{error, Node, Error};
_ ->
ok
end || Node <- Nodes],
case lists:usort(R) of
[ok] -> wsane(Nodes);
_ -> throw(R)
end.
wsane(Ns) ->
%% Same members on all nodes:
{[_],gs} =
{lists:usort([rpc:call(N, pg2, which_groups, []) || N <- Ns]),gs},
_ = [{[_],ms,G} = {lists:usort([rpc:call(N, pg2, get_members, [G]) ||
N <- Ns]),ms,G} ||
G <- pg2:which_groups()],
%% The local members are a partitioning of the members:
[begin
LocalMembers =
lists:sort(lists:append(
[rpc:call(N, pg2, get_local_members, [G]) ||
N <- Ns])),
{part, LocalMembers} = {part, lists:sort(pg2:get_members(G))}
end || G <- pg2:which_groups()],
%% The closest pid should run on the local node, if possible.
[[case rpc:call(N, pg2, get_closest_pid, [G]) of
Pid when is_pid(Pid), node(Pid) =:= N ->
true =
lists:member(Pid, rpc:call(N, pg2, get_local_members, [G]));
%% FIXME. Om annan nod: member, local = [].
_ -> [] = rpc:call(N, pg2, get_local_members, [G])
end || N <- Ns]
|| G <- pg2:which_groups()].
%% Look inside the pg2_table.
sane() ->
L = ets:tab2list(pg2_table),
Gs = lists:sort([G || {{group,G}} <- L]),
MGs = lists:usort([G || {{member,G,_},_} <- L]),
MPs = lists:usort([P || {{member,_,P},_} <- L]),
{[],mg,MGs,Gs} = {MGs -- Gs,mg,MGs,Gs},
RPs = [P || {{ref,P},_RPid,_Ref,_C} <- L],
{MPs,rp} = {RPs,rp},
RPs2 = [P || {{ref,_Ref},P} <- L],
{MPs,rp2} = {RPs2,rp2},
_ = [true = C >= 1 || {{ref,_P},_RPid,_Ref,C} <- L],
LGs = lists:usort([G || {{local_member,G,_}} <- L]),
LPs = lists:usort([P || {{local_member,_,P}} <- L]),
{[],lg} = {LGs -- Gs,lg},
{[],lp} = {LPs -- MPs,lp},
PGs = lists:usort([G || {{pid,_,G}} <- L]),
PPs = lists:usort([P || {{pid,P,_}} <- L]),
{[],pg} = {PGs -- Gs,pg},
{MPs,pp} = {PPs,pp},
_ = [true = C >= 1 || {{member,_,_},C} <- L],
ok.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Mostly copied from global_SUITE.erl
%% (Setting up a partition is quite tricky.)
loop_until_true(Fun, Config) ->
case Fun() of
true ->
true;
_ ->
timer:sleep(?UNTIL_LOOP),
loop_until_true(Fun, Config)
end.
start_node_rel(Name, Rel, How) ->
{Release, Compat} = case Rel of
this ->
{[this], "+R8"};
Rel when is_atom(Rel) ->
{[{release, atom_to_list(Rel)}], ""};
RelList ->
{RelList, ""}
end,
?line Pa = filename:dirname(code:which(?MODULE)),
?line Res = test_server:start_node(Name, How,
[{args,
Compat ++
" -kernel net_setuptime 100 "
" -pa " ++ Pa},
{erl, Release}]),
Res.
start_nodes(L, How, Config) ->
start_nodes2(L, How, 0, Config),
Nodes = collect_nodes(0, length(L)),
?line ?UNTIL([] =:= Nodes -- nodes()),
%% Pinging doesn't help, we have to wait too, for nodes() to become
%% correct on the other node.
lists:foreach(fun(E) ->
net_adm:ping(E)
end,
Nodes),
verify_nodes(Nodes, Config),
Nodes.
verify_nodes(Nodes, Config) ->
verify_nodes(Nodes, lists:sort([node() | Nodes]), Config).
verify_nodes([], _N, _Config) ->
[];
verify_nodes([Node | Rest], N, Config) ->
?line ?UNTIL(
case rpc:call(Node, erlang, nodes, []) of
Nodes when is_list(Nodes) ->
case N =:= lists:sort([Node | Nodes]) of
true ->
true;
false ->
lists:foreach(fun(Nd) ->
rpc:call(Nd, net_adm, ping,
[Node])
end,
nodes()),
false
end;
_ ->
false
end
),
verify_nodes(Rest, N, Config).
start_nodes2([], _How, _, _Config) ->
[];
start_nodes2([Name | Rest], How, N, Config) ->
Self = self(),
spawn(fun() ->
erlang:display({starting, Name}),
{ok, R} = start_node(Name, How, Config),
erlang:display({started, Name, R}),
Self ! {N, R},
%% sleeping is necessary, or with peer nodes, they will
%% go down again, despite {linked, false}.
test_server:sleep(100000)
end),
start_nodes2(Rest, How, N+1, Config).
collect_nodes(N, N) ->
[];
collect_nodes(N, Max) ->
receive
{N, Node} ->
[Node | collect_nodes(N+1, Max)]
end.
start_node(Name, How, Config) ->
start_node(Name, How, "", Config).
start_node(Name0, How, Args, Config) ->
Name = node_name(Name0, Config),
Pa = filename:dirname(code:which(?MODULE)),
test_server:start_node(Name, How, [{args,
Args ++ " " ++
"-kernel net_setuptime 100 "
"-noshell "
"-pa " ++ Pa},
{linked, false}]).
stop_nodes(Nodes) ->
lists:foreach(fun(Node) -> stop_node(Node) end, Nodes).
stop_node(Node) ->
?t:stop_node(Node).
get_known(Node) ->
case catch gen_server:call({global_name_server,Node},get_known,infinity) of
{'EXIT', _} ->
[list, without, nodenames];
Known when is_list(Known) ->
lists:sort([Node | Known])
end.
node_name(Name, Config) ->
U = "_",
{{Y,M,D}, {H,Min,S}} = calendar:now_to_local_time(now()),
Date = io_lib:format("~4w_~2..0w_~2..0w__~2..0w_~2..0w_~2..0w",
[Y,M,D, H,Min,S]),
L = lists:flatten(Date),
lists:concat([Name,U,?testcase,U,U,L]).
%% This one runs on one node in Part2.
%% The partition is ready when is_ready_partition(Config) returns (true).
make_partition(Config, Part1, Part2) ->
make_partition(Config, Part1, Part2, mk_part_node).
make_partition(Config, Part1, Part2, Function) ->
Dir = ?config(priv_dir, Config),
Ns = [begin
Name = lists:concat([atom_to_list(N),"_",msec(),".part"]),
File = filename:join([Dir, Name]),
file:delete(File),
rpc_cast(N, ?MODULE, Function, [File, Part, Config], File),
{N, File}
end || Part <- [Part1, Part2], N <- Part],
all_nodes_files(Ns, "done", Config),
lists:foreach(fun({_N,File}) -> file:delete(File) end, Ns),
PartFile = make_partition_file(Config),
touch(PartFile, "done").
%% The node signals its success by touching a file.
mk_part_node(File, MyPart0, Config) ->
touch(File, "start"), % debug
MyPart = lists:sort(MyPart0),
?UNTIL(is_node_in_part(File, MyPart)),
touch(File, "done").
%% The calls to append_to_file are for debugging.
is_node_in_part(File, MyPart) ->
lists:foreach(fun(N) ->
_ = erlang:disconnect_node(N)
end, nodes() -- MyPart),
case {(Known = get_known(node())) =:= MyPart,
(Nodes = lists:sort([node() | nodes()])) =:= MyPart} of
{true, true} ->
%% Make sure the resolvers have been terminated,
%% otherwise they may pop up and send some message.
%% (This check is probably unnecessary.)
case element(5, global:info()) of
[] ->
true;
Rs ->
append_to_file(File, {now(), Known, Nodes, Rs}),
false
end;
_ ->
append_to_file(File, {now(), Known, Nodes}),
false
end.
is_ready_partition(Config) ->
File = make_partition_file(Config),
file_contents(File, "done", Config),
file:delete(File),
true.
wait_for_ready_net(Config) ->
wait_for_ready_net([node()|nodes()], Config).
wait_for_ready_net(Nodes0, Config) ->
Nodes = lists:sort(Nodes0),
?t:format("wait_for_ready_net ~p~n", [Nodes]),
?UNTIL(begin
lists:all(fun(N) -> Nodes =:= get_known(N) end, Nodes) and
lists:all(fun(N) ->
LNs = rpc:call(N, erlang, nodes, []),
Nodes =:= lists:sort([N | LNs])
end, Nodes)
end).
%% To make it less probable that some low-level problem causes
%% problems, the receiving node is ping:ed.
rpc_cast(Node, Module, Function, Args) ->
{_,pong,Node}= {node(),net_adm:ping(Node),Node},
rpc:cast(Node, Module, Function, Args).
rpc_cast(Node, Module, Function, Args, File) ->
case net_adm:ping(Node) of
pong ->
rpc:cast(Node, Module, Function, Args);
Else ->
append_to_file(File, {now(), {rpc_cast, Node, Module, Function,
Args, Else}})
%% Maybe we should crash, but it probably doesn't matter.
end.
touch(File, List) ->
ok = file:write_file(File, list_to_binary(List)).
append_to_file(File, Term) ->
{ok, Fd} = file:open(File, [raw,binary,append]),
ok = file:write(Fd, io_lib:format("~p.~n", [Term])),
ok = file:close(Fd).
all_nodes_files(Files, ContentsList, Config) ->
lists:all(fun({_N,File}) ->
file_contents(File, ContentsList, Config)
end, Files).
file_contents(File, ContentsList, Config) ->
file_contents(File, ContentsList, Config, no_log_file).
file_contents(File, ContentsList, Config, LogFile) ->
Contents = list_to_binary(ContentsList),
Sz = size(Contents),
?UNTIL(begin
case file:read_file(File) of
{ok, FileContents}=Reply ->
case catch split_binary(FileContents, Sz) of
{Contents,_} ->
true;
_ ->
catch append_to_file(LogFile,
{File,Contents,Reply}),
false
end;
Reply ->
catch append_to_file(LogFile, {File, Contents, Reply}),
false
end
end).
make_partition_file(Config) ->
Dir = ?config(priv_dir, Config),
filename:join([Dir, atom_to_list(make_partition_done)]).
msec() ->
msec(now()).
msec(T) ->
element(1,T)*1000000000 + element(2,T)*1000 + element(3,T) div 1000.
