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% 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.
-module(couch_index_ddoc_updated_tests).
-include_lib("couch/include/couch_eunit.hrl").
-include_lib("couch/include/couch_db.hrl").
start() ->
fake_index(),
Ctx = test_util:start_couch([mem3, fabric]),
DbName = ?tempdb(),
ok = fabric:create_db(DbName, [?ADMIN_CTX]),
{Ctx, DbName}.
stop({Ctx, DbName}) ->
meck:unload(test_index),
ok = fabric:delete_db(DbName, [?ADMIN_CTX]),
DbDir = config:get("couchdb", "database_dir", "."),
WaitFun = fun() ->
filelib:fold_files(DbDir, <<".*", DbName/binary, "\.[0-9]+.*">>,
true, fun(_F, _A) -> wait end, ok)
end,
ok = test_util:wait(WaitFun),
test_util:stop_couch(Ctx),
ok.
ddoc_update_test_() ->
{
"Check ddoc update actions",
{
setup,
fun start/0, fun stop/1,
fun check_all_indexers_exit_on_ddoc_change/1
}
}.
check_all_indexers_exit_on_ddoc_change({_Ctx, DbName}) ->
?_test(begin
[DbShard1 | RestDbShards] = lists:map(fun(Sh) ->
{ok, ShardDb} = couch_db:open(mem3:name(Sh), []),
ShardDb
end, mem3:local_shards(mem3:dbname(DbName))),
% create a DDoc on Db1
DDocID = <<"idx_name">>,
DDocJson = couch_doc:from_json_obj({[
{<<"_id">>, DDocID},
{<<"value">>, 1}
]}),
{ok, _Rev} = couch_db:update_doc(DbShard1, DDocJson, []),
{ok, DbShard} = couch_db:reopen(DbShard1),
{ok, DDoc} = couch_db:open_doc(
DbShard, DDocID, [ejson_body, ?ADMIN_CTX]),
DbShards = [DbShard | RestDbShards],
N = length(DbShards),
% run couch_index process for each shard database
ok = meck:reset(test_index),
lists:foreach(fun(ShardDb) ->
couch_index_server:get_index(test_index, ShardDb, DDoc)
end, DbShards),
IndexesBefore = get_indexes_by_ddoc(DDocID, N),
?assertEqual(N, length(IndexesBefore)),
AliveBefore = lists:filter(fun erlang:is_process_alive/1, IndexesBefore),
?assertEqual(N, length(AliveBefore)),
% update ddoc
DDocJson2 = couch_doc:from_json_obj({[
{<<"_id">>, DDocID},
{<<"value">>, 2},
{<<"_rev">>, couch_doc:rev_to_str(DDoc#doc.revs)}
]}),
{ok, _} = couch_db:update_doc(DbShard, DDocJson2, []),
% assert that all index processes exit after ddoc updated
ok = meck:reset(test_index),
couch_index_server:handle_db_event(
couch_db:name(DbShard), {ddoc_updated, DDocID}, {st, ""}),
ok = meck:wait(N, test_index, init, ['_', '_'], 5000),
IndexesAfter = get_indexes_by_ddoc(DDocID, 0),
?assertEqual(0, length(IndexesAfter)),
%% assert that previously running indexes are gone
AliveAfter = lists:filter(fun erlang:is_process_alive/1, IndexesBefore),
?assertEqual(0, length(AliveAfter)),
ok
end).
fake_index() ->
ok = meck:new([test_index], [non_strict]),
ok = meck:expect(test_index, init, fun(Db, DDoc) ->
{ok, {couch_db:name(Db), DDoc}}
end),
ok = meck:expect(test_index, open, fun(_Db, State) ->
{ok, State}
end),
ok = meck:expect(test_index, get, fun
(db_name, {DbName, _DDoc}) ->
DbName;
(idx_name, {_DbName, DDoc}) ->
DDoc#doc.id;
(signature, {_DbName, DDoc}) ->
couch_hash:md5_hash(term_to_binary(DDoc));
(update_seq, Seq) ->
Seq
end),
ok = meck:expect(test_index, shutdown, ['_'], ok).
get_indexes_by_ddoc(DDocID, N) ->
Indexes = test_util:wait(fun() ->
Indxs = ets:match_object(
couchdb_indexes_by_db, {'$1', {DDocID, '$2'}}),
case length(Indxs) == N of
true ->
Indxs;
false ->
wait
end
end),
lists:foldl(fun({DbName, {_DDocID, Sig}}, Acc) ->
case ets:lookup(couchdb_indexes_by_sig, {DbName, Sig}) of
[{_, Pid}] -> [Pid|Acc];
_ -> Acc
end
end, [], Indexes).
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