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-module(couch_replicator_small_max_request_size_target).
-include_lib("couch/include/couch_eunit.hrl").
-include_lib("couch/include/couch_db.hrl").
-import(couch_replicator_test_helper, [
db_url/1,
replicate/1,
compare_dbs/3
]).
-define(TIMEOUT_EUNIT, 360).
setup() ->
DbName = ?tempdb(),
{ok, Db} = couch_db:create(DbName, [?ADMIN_CTX]),
ok = couch_db:close(Db),
DbName.
setup(local) ->
setup();
setup(remote) ->
{remote, setup()};
setup({A, B}) ->
Ctx = test_util:start_couch([couch_replicator]),
config:set("httpd", "max_http_request_size", "10000", false),
Source = setup(A),
Target = setup(B),
{Ctx, {Source, Target}}.
teardown({remote, DbName}) ->
teardown(DbName);
teardown(DbName) ->
ok = couch_server:delete(DbName, [?ADMIN_CTX]),
ok.
teardown(_, {Ctx, {Source, Target}}) ->
teardown(Source),
teardown(Target),
ok = application:stop(couch_replicator),
ok = test_util:stop_couch(Ctx).
reduce_max_request_size_test_() ->
Pairs = [{local, remote}, {remote, remote}],
{
"Replicate docs when target has a small max_http_request_size",
{
foreachx,
fun setup/1, fun teardown/2,
[{Pair, fun should_replicate_all_docs/2}
|| Pair <- Pairs]
++ [{Pair, fun should_replicate_one/2}
|| Pair <- Pairs]
% Disabled. See issue 574. Sometimes PUTs with a doc and
% attachment which exceed maximum request size are simply
% closed instead of returning a 413 request. That makes these
% tests flaky.
++ [{Pair, fun should_replicate_one_with_attachment/2}
|| Pair <- Pairs]
}
}.
% Test documents which are below max_http_request_size but when batched, batch size
% will be greater than max_http_request_size. Replicator could automatically split
% the batch into smaller batches and POST those separately.
should_replicate_all_docs({From, To}, {_Ctx, {Source, Target}}) ->
{lists:flatten(io_lib:format("~p -> ~p", [From, To])),
{inorder, [should_populate_source(Source),
should_replicate(Source, Target),
should_compare_databases(Source, Target, [])]}}.
% If a document is too large to post as a single request, that document is
% skipped but replication overall will make progress and not crash.
should_replicate_one({From, To}, {_Ctx, {Source, Target}}) ->
{lists:flatten(io_lib:format("~p -> ~p", [From, To])),
{inorder, [should_populate_source_one_large_one_small(Source),
should_replicate(Source, Target),
should_compare_databases(Source, Target, [<<"doc0">>])]}}.
% If a document has an attachment > 64 * 1024 bytes, replicator will switch to
% POST-ing individual documents directly and skip bulk_docs. Test that case
% separately
% See note in main test function why this was disabled.
should_replicate_one_with_attachment({From, To}, {_Ctx, {Source, Target}}) ->
{lists:flatten(io_lib:format("~p -> ~p", [From, To])),
{inorder, [should_populate_source_one_large_attachment(Source),
should_populate_source(Source),
should_replicate(Source, Target),
should_compare_databases(Source, Target, [<<"doc0">>])]}}.
should_populate_source({remote, Source}) ->
should_populate_source(Source);
should_populate_source(Source) ->
{timeout, ?TIMEOUT_EUNIT, ?_test(add_docs(Source, 5, 3000, 0))}.
should_populate_source_one_large_one_small({remote, Source}) ->
should_populate_source_one_large_one_small(Source);
should_populate_source_one_large_one_small(Source) ->
{timeout, ?TIMEOUT_EUNIT, ?_test(one_large_one_small(Source, 12000, 3000))}.
should_populate_source_one_large_attachment({remote, Source}) ->
should_populate_source_one_large_attachment(Source);
should_populate_source_one_large_attachment(Source) ->
{timeout, ?TIMEOUT_EUNIT, ?_test(one_large_attachment(Source, 70000, 70000))}.
should_replicate({remote, Source}, Target) ->
should_replicate(db_url(Source), Target);
should_replicate(Source, {remote, Target}) ->
should_replicate(Source, db_url(Target));
should_replicate(Source, Target) ->
{timeout, ?TIMEOUT_EUNIT, ?_test(replicate(Source, Target))}.
should_compare_databases({remote, Source}, Target, ExceptIds) ->
should_compare_databases(Source, Target, ExceptIds);
should_compare_databases(Source, {remote, Target}, ExceptIds) ->
should_compare_databases(Source, Target, ExceptIds);
should_compare_databases(Source, Target, ExceptIds) ->
{timeout, ?TIMEOUT_EUNIT, ?_test(compare_dbs(Source, Target, ExceptIds))}.
binary_chunk(Size) when is_integer(Size), Size > 0 ->
<< <<"x">> || _ <- lists:seq(1, Size) >>.
add_docs(DbName, DocCount, DocSize, AttSize) ->
[begin
DocId = iolist_to_binary(["doc", integer_to_list(Id)]),
add_doc(DbName, DocId, DocSize, AttSize)
end || Id <- lists:seq(1, DocCount)],
ok.
one_large_one_small(DbName, Large, Small) ->
add_doc(DbName, <<"doc0">>, Large, 0),
add_doc(DbName, <<"doc1">>, Small, 0).
one_large_attachment(DbName, Size, AttSize) ->
add_doc(DbName, <<"doc0">>, Size, AttSize).
add_doc(DbName, DocId, Size, AttSize) when is_binary(DocId) ->
{ok, Db} = couch_db:open_int(DbName, []),
Doc0 = #doc{id = DocId, body = {[{<<"x">>, binary_chunk(Size)}]}},
Doc = Doc0#doc{atts = atts(AttSize)},
{ok, _} = couch_db:update_doc(Db, Doc, []),
couch_db:close(Db).
atts(0) ->
[];
atts(Size) ->
[couch_att:new([
{name, <<"att1">>},
{type, <<"app/binary">>},
{att_len, Size},
{data, fun(Bytes) -> binary_chunk(Bytes) end}
])].
replicate(Source, Target) ->
replicate({[
{<<"source">>, Source},
{<<"target">>, Target},
{<<"worker_processes">>, "1"} % This make batch_size predictable
]}).
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