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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_db_purge_upgrade_tests).
-include_lib("couch/include/couch_eunit.hrl").
-include_lib("couch/include/couch_db.hrl").
-define(USER, "couch_db_purge_upgrade_admin").
-define(PASS, "pass").
-define(AUTH, {basic_auth, {?USER, ?PASS}}).
-define(CONTENT_JSON, {"Content-Type", "application/json"}).
setup() ->
DbDir = config:get("couchdb", "database_dir"),
DbFileNames = [
"db_without_purge_req",
"db_with_1_purge_req",
"db_with_2_purge_req"
],
lists:map(fun(DbFileName) ->
write_db_doc(list_to_binary(DbFileName)),
OldDbFilePath = filename:join([?FIXTURESDIR, DbFileName ++ ".couch"]),
NewDbFileName = DbFileName ++ ".1525663363.couch",
NewDbFilePath = filename:join(
[DbDir, "shards/00000000-ffffffff/", NewDbFileName]
),
ok = filelib:ensure_dir(NewDbFilePath),
file:delete(NewDbFilePath),
file:copy(OldDbFilePath, NewDbFilePath),
NewDbFilePath
end, DbFileNames).
teardown(Files) ->
lists:foreach(fun(File) -> file:delete(File) end, Files).
purge_upgrade_test() ->
{
"Purge Upgrade tests",
{
setup,
fun chttpd_test_util:start_couch/0,
fun chttpd_test_util:stop_couch/1,
{
foreach,
fun setup/0, fun teardown/1,
[
fun should_upgrade_legacy_db_without_purge_req/1,
fun should_upgrade_legacy_db_with_1_purge_req/1,
fun should_upgrade_legacy_db_with_N_purge_req/1
]
}
}
}.
should_upgrade_legacy_db_without_purge_req(_Files) ->
?_test(begin
config:set("cluster", "q", "1"),
DbName = <<"db_without_purge_req">>,
DbUrl = db_url(DbName),
% 3 docs in legacy database before upgrade
% and added 2 new doc to database
{ok, _, _, ResultBody1} = create_doc(DbUrl, "doc4"),
{ok, _, _, _ResultBody} = create_doc(DbUrl, "doc5"),
{Json1} = ?JSON_DECODE(ResultBody1),
{ok, _, _, ResultBody2} = test_request:get(DbUrl),
{Json2} = ?JSON_DECODE(ResultBody2),
Rev4 = couch_util:get_value(<<"rev">>, Json1, undefined),
IdsRevsEJson = {[{<<"doc4">>, [Rev4]}]},
?assert(5 =:= couch_util:get_value(<<"doc_count">>, Json2)),
IdsRevs = binary_to_list(?JSON_ENCODE(IdsRevsEJson)),
{ok, Code, _, _ResultBody3} = test_request:post(DbUrl ++ "/_purge/",
[?CONTENT_JSON], IdsRevs),
?assert(Code =:= 201),
{ok, _, _, ResultBody4} = test_request:get(DbUrl),
{Json4} = ?JSON_DECODE(ResultBody4),
?assert(4 =:= couch_util:get_value(<<"doc_count">>, Json4))
end).
should_upgrade_legacy_db_with_1_purge_req(_Files) ->
?_test(begin
config:set("cluster", "q", "1"),
DbName = <<"db_with_1_purge_req">>,
DbUrl = db_url(DbName),
% 3 docs in legacy database and 1 of them were purged before upgrade
% and adding 2 new docs to database
{ok, _, _, ResultBody1} = create_doc(DbUrl, "doc4"),
{ok, _, _, _ResultBody} = create_doc(DbUrl, "doc5"),
{Json1} = ?JSON_DECODE(ResultBody1),
{ok, _, _, ResultBody2} = test_request:get(DbUrl),
{Json2} = ?JSON_DECODE(ResultBody2),
Rev4 = couch_util:get_value(<<"rev">>, Json1, undefined),
IdsRevsEJson = {[{<<"doc4">>, [Rev4]}]},
?assert(4 =:= couch_util:get_value(<<"doc_count">>, Json2)),
IdsRevs = binary_to_list(?JSON_ENCODE(IdsRevsEJson)),
{ok, Code, _, _ResultBody3} = test_request:post(DbUrl ++ "/_purge/",
[?CONTENT_JSON], IdsRevs),
?assert(Code =:= 201),
{ok, _, _, ResultBody4} = test_request:get(DbUrl),
{Json4} = ?JSON_DECODE(ResultBody4),
?assert(3 =:= couch_util:get_value(<<"doc_count">>, Json4)),
PurgeSeq = couch_util:get_value(<<"purge_seq">>, Json4),
[SeqNumber | _Rest] = binary:split(PurgeSeq, <<"-">>, [global]),
?assert(<<"2">> =:= SeqNumber)
end).
should_upgrade_legacy_db_with_N_purge_req(_Files) ->
?_test(begin
config:set("cluster", "q", "1"),
DbName = <<"db_with_2_purge_req">>,
DbUrl = db_url(DbName),
% 3 docs in legacy database and 2 of them were purged before upgrade
% and adding 2 new doc to database
{ok, _, _, ResultBody1} = create_doc(DbUrl, "doc4"),
{ok, _, _, _ResultBody} = create_doc(DbUrl, "doc5"),
{Json1} = ?JSON_DECODE(ResultBody1),
{ok, _, _, ResultBody2} = test_request:get(DbUrl),
{Json2} = ?JSON_DECODE(ResultBody2),
Rev4 = couch_util:get_value(<<"rev">>, Json1, undefined),
IdsRevsEJson = {[{<<"doc4">>, [Rev4]}]},
?assert(3 =:= couch_util:get_value(<<"doc_count">>, Json2)),
IdsRevs = binary_to_list(?JSON_ENCODE(IdsRevsEJson)),
{ok, Code, _, _ResultBody3} = test_request:post(DbUrl ++ "/_purge/",
[?CONTENT_JSON], IdsRevs),
?assert(Code =:= 201),
{ok, _, _, ResultBody4} = test_request:get(DbUrl),
{Json4} = ?JSON_DECODE(ResultBody4),
?assert(2 =:= couch_util:get_value(<<"doc_count">>, Json4)),
PurgeSeq = couch_util:get_value(<<"purge_seq">>, Json4),
[SeqNumber | _Rest] = binary:split(PurgeSeq, <<"-">>, [global]),
?assert(<<"3">> =:= SeqNumber)
end).
db_url(DbName) ->
Addr = config:get("httpd", "bind_address", "127.0.0.1"),
Port = integer_to_list(mochiweb_socket_server:get(chttpd, port)),
"http://" ++ Addr ++ ":" ++ Port ++ "/" ++ ?b2l(DbName).
create_doc(Url, Id) ->
test_request:put(Url ++ "/" ++ Id,
[?CONTENT_JSON], "{\"mr\": \"rockoartischocko\"}").
write_db_doc(Id) ->
DbName = ?l2b(config:get("mem3", "shards_db", "_dbs")),
Doc = couch_doc:from_json_obj({[
{<<"_id">>, Id},
{<<"shard_suffix">>, ".1525663363"},
{<<"changelog">>,
[[<<"add">>, <<"00000000-ffffffff">>, <<"nonode@nohost">>]]
},
{<<"by_node">>, {[{<<"nonode@nohost">>, [<<"00000000-ffffffff">>]}]}},
{<<"by_range">>, {[{<<"00000000-ffffffff">>, [<<"nonode@nohost">>]}]}}
]}),
write_db_doc(DbName, Doc, true).
write_db_doc(DbName, #doc{id=Id, body=Body} = Doc, ShouldMutate) ->
{ok, Db} = couch_db:open(DbName, [?ADMIN_CTX]),
try couch_db:open_doc(Db, Id, [ejson_body]) of
{ok, #doc{body = Body}} ->
% the doc is already in the desired state, we're done here
ok;
{not_found, _} when ShouldMutate ->
try couch_db:update_doc(Db, Doc, []) of
{ok, _} ->
ok
catch conflict ->
% check to see if this was a replication race or a different edit
write_db_doc(DbName, Doc, false)
end;
_ ->
% the doc already exists in a different state
conflict
after
couch_db:close(Db)
end.
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