machi/test/machi_cr_client_test.erl

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%% -------------------------------------------------------------------
%%
%% Copyright (c) 2007-2015 Basho Technologies, Inc. All Rights Reserved.
%%
%% This file is provided to you 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.
%%
%% -------------------------------------------------------------------
-module(machi_cr_client_test).
-include("machi.hrl").
-include("machi_projection.hrl").
-ifdef(TEST).
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-ifndef(PULSE).
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-include_lib("eunit/include/eunit.hrl").
smoke_test_() -> {timeout, 1*60, fun() -> smoke_test2() end}.
setup_smoke_test(Host, PortBase, Os, Witness_list) ->
os:cmd("rm -rf ./data.a ./data.b ./data.c"),
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{ok, _} = machi_util:wait_for_life(machi_flu_sup, 100),
F = fun(X) -> case lists:member(X, Witness_list) of
true ->
[{witness_mode, true}|Os];
false ->
Os
end
end,
{ok,_}=machi_flu_psup:start_flu_package(a, PortBase+0, "./data.a", F(a)),
{ok,_}=machi_flu_psup:start_flu_package(b, PortBase+1, "./data.b", F(b)),
{ok,_}=machi_flu_psup:start_flu_package(c, PortBase+2, "./data.c", F(c)),
D = orddict:from_list(
[{a,{p_srvr,a,machi_flu1_client,"localhost",PortBase+0,[]}},
{b,{p_srvr,b,machi_flu1_client,"localhost",PortBase+1,[]}},
{c,{p_srvr,c,machi_flu1_client,"localhost",PortBase+2,[]}}]),
%% Force the chain to repair & fully assemble as quickly as possible.
%% 1. Use set_chain_members() on all 3
%% 2. Force a to run repair in a tight loop
%% 3. Stop as soon as we see UPI=[a,b,c] and also author=c.
%% Otherwise, we can have a race with later, minor
%% projection changes which will change our understanding of
%% the epoch id. (C is the author with highest weight.)
%% 4. Wait until all others are using epoch id from #3.
%%
%% Damn, this is a pain to make 100% deterministic, bleh.
CMode = if Witness_list == [] -> ap_mode;
Witness_list /= [] -> cp_mode
end,
ok = machi_chain_manager1:set_chain_members(a_chmgr, ch0, 0, CMode,
D, Witness_list),
ok = machi_chain_manager1:set_chain_members(b_chmgr, ch0, 0, CMode,
D, Witness_list),
ok = machi_chain_manager1:set_chain_members(c_chmgr, ch0, 0, CMode,
D, Witness_list),
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run_ticks([a_chmgr,b_chmgr,c_chmgr]),
%% Everyone is settled on the same damn epoch id.
{ok, EpochID} = machi_flu1_client:get_latest_epochid(Host, PortBase+0,
private),
{ok, EpochID} = machi_flu1_client:get_latest_epochid(Host, PortBase+1,
private),
{ok, EpochID} = machi_flu1_client:get_latest_epochid(Host, PortBase+2,
private),
{D, EpochID}.
run_ticks(MgrList) ->
TickAll = fun() -> [begin
Pid ! tick_check_environment,
timer:sleep(50)
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end || Pid <- MgrList]
end,
_ = lists:foldl(
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fun(_, [{_,[a,b,c]}]=Acc) -> Acc;
(_, [{_,[b,c]}]=Acc) -> Acc; %% Fragile, but for witness=[a]
(_, [{_,[a,c]},{yy,b_pstore}]=Acc) -> Acc; %% Fragile, but for witness=[a]
(_, _Acc) ->
TickAll(), % has some sleep time inside
Xs = [try
{ok, Prj} = machi_projection_store:read_latest_projection(PStore, private),
{Prj#projection_v1.author_server,
Prj#projection_v1.upi}
catch _:_ ->
{yy, PStore}
end || PStore <- [a_pstore,b_pstore,c_pstore] ],
lists:usort(Xs)
end, undefined, lists:seq(1,10000)),
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ok.
smoke_test2() ->
{ok, SupPid} = machi_sup:start_link(),
error_logger:tty(false),
try
Prefix = <<"pre">>,
Chunk1 = <<"yochunk">>,
Host = "localhost",
PortBase = 64454,
Os = [{ignore_stability_time, true}, {active_mode, false}],
{D, EpochID} = setup_smoke_test(Host, PortBase, Os, []),
%% Whew ... ok, now start some damn tests.
{ok, C1} = machi_cr_client:start_link([P || {_,P}<-orddict:to_list(D)]),
machi_cr_client:append_chunk(C1, Prefix, Chunk1),
{ok, {Off1,Size1,File1}} =
machi_cr_client:append_chunk(C1, Prefix, Chunk1),
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Chunk1_badcs = {<<?CSUM_TAG_CLIENT_SHA:8, 0:(8*20)>>, Chunk1},
{error, bad_checksum} =
machi_cr_client:append_chunk(C1, Prefix, Chunk1_badcs),
{ok, {[{_, Off1, Chunk1, _}], []}} =
machi_cr_client:read_chunk(C1, File1, Off1, Size1, []),
{ok, PPP} = machi_flu1_client:read_latest_projection(Host, PortBase+0,
private),
%% Verify that the client's CR wrote to all of them.
[{ok, {[{_, Off1, Chunk1, _}], []}} =
machi_flu1_client:read_chunk(
Host, PortBase+X, EpochID, File1, Off1, Size1, []) ||
X <- [0,1,2] ],
%% Test read repair: Manually write to head, then verify that
%% read-repair fixes all.
FooOff1 = Off1 + (1024*1024),
[{error, not_written} = machi_flu1_client:read_chunk(
Host, PortBase+X, EpochID,
File1, FooOff1, Size1, []) || X <- [0,1,2] ],
ok = machi_flu1_client:write_chunk(Host, PortBase+0, EpochID,
File1, FooOff1, Chunk1),
{ok, {[{_, FooOff1, Chunk1, _}], []}} =
machi_flu1_client:read_chunk(Host, PortBase+0, EpochID,
File1, FooOff1, Size1, []),
{ok, {[{_, FooOff1, Chunk1, _}], []}} =
machi_cr_client:read_chunk(C1, File1, FooOff1, Size1, []),
[?assertMatch({X,{ok, {[{_, FooOff1, Chunk1, _}], []}}},
{X,machi_flu1_client:read_chunk(
Host, PortBase+X, EpochID,
File1, FooOff1, Size1, [])})
|| X <- [0,1,2] ],
%% Test read repair: Manually write to middle, then same checking.
FooOff2 = Off1 + (2*1024*1024),
Chunk2 = <<"Middle repair chunk">>,
Size2 = size(Chunk2),
ok = machi_flu1_client:write_chunk(Host, PortBase+1, EpochID,
File1, FooOff2, Chunk2),
{ok, {[{_, FooOff2, Chunk2, _}], []}} =
machi_cr_client:read_chunk(C1, File1, FooOff2, Size2, []),
[{X,{ok, {[{_, FooOff2, Chunk2, _}], []}}} =
{X,machi_flu1_client:read_chunk(
Host, PortBase+X, EpochID,
File1, FooOff2, Size2, [])} || X <- [0,1,2] ],
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%% Misc API smoke & minor regression checks
{error, bad_arg} = machi_cr_client:read_chunk(C1, <<"no">>,
999999999, 1, []),
{ok, {[{_,Off1,Chunk1,_}, {_,FooOff1,Chunk1,_}, {_,FooOff2,Chunk2,_}],
[]}} =
machi_cr_client:read_chunk(C1, File1, Off1, 88888888, []),
%% Checksum list return value is a primitive binary().
{ok, KludgeBin} = machi_cr_client:checksum_list(C1, File1),
true = is_binary(KludgeBin),
{error, bad_arg} = machi_cr_client:checksum_list(C1, <<"!!!!">>),
io:format(user, "\nFiles = ~p\n", [machi_cr_client:list_files(C1)]),
%% Exactly one file right now, e.g.,
%% {ok,[{2098202,<<"pre^b144ef13-db4d-4c9f-96e7-caff02dc754f^1">>}]}
{ok, [_]} = machi_cr_client:list_files(C1),
%% Go back and test append_chunk_extra() and write_chunk()
Chunk10 = <<"It's a different chunk!">>,
Size10 = byte_size(Chunk10),
Extra10 = 5,
{ok, {Off10,Size10,File10}} =
machi_cr_client:append_chunk_extra(C1, Prefix, Chunk10,
Extra10 * Size10),
{ok, {[{_, Off10, Chunk10, _}], []}} =
machi_cr_client:read_chunk(C1, File10, Off10, Size10, []),
[begin
Offx = Off10 + (Seq * Size10),
%% TODO: uncomment written/not_written enforcement is available.
%% {error,not_written} = machi_cr_client:read_chunk(C1, File10,
%% Offx, Size10),
{ok, {Offx,Size10,File10}} =
machi_cr_client:write_chunk(C1, File10, Offx, Chunk10),
{ok, {[{_, Offx, Chunk10, _}], []}} =
machi_cr_client:read_chunk(C1, File10, Offx, Size10, [])
end || Seq <- lists:seq(1, Extra10)],
{ok, {Off11,Size11,File11}} =
machi_cr_client:append_chunk(C1, Prefix, Chunk10),
%% %% Double-check that our reserved extra bytes were really honored!
%% true = (Off11 > (Off10 + (Extra10 * Size10))),
io:format(user, "\nFiles = ~p\n", [machi_cr_client:list_files(C1)]),
ok
after
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exit(SupPid, normal),
machi_util:wait_for_death(SupPid, 100),
error_logger:tty(true),
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catch application:stop(machi)
end.
witness_smoke_test_() -> {timeout, 1*60, fun() -> witness_smoke_test2() end}.
witness_smoke_test2() ->
SupPid = case machi_sup:start_link() of
{ok, P} -> P;
{error, {already_started, P1}} -> P1;
Other -> error(Other)
end,
%% TODO: I wonder why commenting this out makes this test pass
%% error_logger:tty(true),
try
Prefix = <<"pre">>,
Chunk1 = <<"yochunk">>,
Host = "localhost",
PortBase = 64444,
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Os = [{ignore_stability_time, true}, {active_mode, false},
{consistency_mode, cp_mode}],
OurWitness = a,
{D, EpochID} = setup_smoke_test(Host, PortBase, Os, [OurWitness]),
%% Whew ... ok, now start some damn tests.
{ok, C1} = machi_cr_client:start_link([P || {_,P}<-orddict:to_list(D)]),
{ok, _} = machi_cr_client:append_chunk(C1, Prefix, Chunk1),
{ok, {Off1,Size1,File1}} =
machi_cr_client:append_chunk(C1, Prefix, Chunk1),
Chunk1_badcs = {<<?CSUM_TAG_CLIENT_SHA:8, 0:(8*20)>>, Chunk1},
{error, bad_checksum} =
machi_cr_client:append_chunk(C1, Prefix, Chunk1_badcs),
{ok, {[{_, Off1, Chunk1, _}], []}} =
machi_cr_client:read_chunk(C1, File1, Off1, Size1, []),
%% Stop 'b' and let the chain reset.
ok = machi_flu_psup:stop_flu_package(b),
%% ok = machi_fitness:add_admin_down(a_fitness, admin_down_bogus_flu, [{why,because}]),
%% ok = machi_fitness:delete_admin_down(a_fitness, admin_down_bogus_flu),
%% Run ticks enough times to force auto-unwedge of both a & c.
[run_ticks([a_chmgr,c_chmgr]) || _ <- [1,2,3,4] ],
%% The chain should now be [a,c].
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%% Let's wedge OurWitness and see what happens: timeout/partition.
#p_srvr{name=WitName, address=WitA, port=WitP} =
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orddict:fetch(OurWitness, D),
{ok, {false, EpochID2}} = machi_flu1_client:wedge_status(WitA, WitP),
machi_flu1:wedge_myself(WitName, EpochID2),
case machi_flu1_client:wedge_status(WitA, WitP) of
{ok, {true, EpochID2}} ->
ok;
{ok, {false, EpochID2}} ->
%% This is racy. Work around it by sleeping a while.
timer:sleep(6*1000),
{ok, {true, EpochID2}} =
machi_flu1_client:wedge_status(WitA, WitP)
end,
%% Chunk1 is still readable: not affected by wedged witness head.
{ok, {[{_, Off1, Chunk1, _}], []}} =
machi_cr_client:read_chunk(C1, File1, Off1, Size1, []),
%% But because the head is wedged, an append will fail.
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{error, partition} =
machi_cr_client:append_chunk(C1, Prefix, Chunk1, 1*1000),
%% The witness's wedge status should cause timeout/partition
%% for write_chunk also.
Chunk10 = <<"It's a different chunk!">>,
Size10 = byte_size(Chunk10),
File10 = File1,
Offx = Off1 + (1 * Size10),
{error, partition} =
machi_cr_client:write_chunk(C1, File10, Offx, Chunk10, 1*1000),
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ok
after
error_logger:tty(true),
catch application:stop(machi),
exit(SupPid, normal)
end.
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-endif. % !PULSE
-endif. % TEST.