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/**
* Copyright (C) 2022-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/repl/primary_only_service_test_fixture.h"
#include "mongo/db/repl/storage_interface_mock.h"
#include "mongo/db/s/config/configsvr_coordinator.h"
#include "mongo/db/s/config/configsvr_coordinator_service.h"
#include "mongo/db/s/config/set_cluster_parameter_coordinator_document_gen.h"
#include "mongo/db/s/config/set_user_write_block_mode_coordinator_document_gen.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
namespace {
class ConfigsvrCoordinatorServiceTest : public repl::PrimaryOnlyServiceMongoDTest {
public:
std::unique_ptr<repl::PrimaryOnlyService> makeService(ServiceContext* serviceContext) override {
return std::make_unique<ConfigsvrCoordinatorService>(serviceContext);
}
void setUp() override {
repl::PrimaryOnlyServiceMongoDTest::setUp();
auto serviceContext = getServiceContext();
auto storageMock = std::make_unique<repl::StorageInterfaceMock>();
repl::StorageInterface::set(serviceContext, std::move(storageMock));
}
void tearDown() override {
_service->shutdown();
repl::PrimaryOnlyServiceMongoDTest::tearDown();
}
};
TEST_F(ConfigsvrCoordinatorServiceTest, CoordinatorsOfSameTypeCanExist) {
auto opCtx = cc().makeOperationContext();
auto* service = dynamic_cast<ConfigsvrCoordinatorService*>(_service);
std::vector<std::shared_ptr<ConfigsvrCoordinator>> instances;
{
// Ensure that the new coordinators we create won't actually run.
FailPointEnableBlock fp("hangAndEndBeforeRunningConfigsvrCoordinatorInstance");
SetClusterParameterCoordinatorDocument coordinatorDoc;
ConfigsvrCoordinatorId cid(ConfigsvrCoordinatorTypeEnum::kSetClusterParameter);
cid.setSubId("0"_sd);
coordinatorDoc.setConfigsvrCoordinatorMetadata({cid});
coordinatorDoc.setParameter(BSON("a" << 1));
SetClusterParameterCoordinatorDocument coordinatorDocSameSubId;
coordinatorDocSameSubId.setConfigsvrCoordinatorMetadata({cid});
coordinatorDocSameSubId.setParameter(BSON("b" << 2));
SetClusterParameterCoordinatorDocument coordinatorDocDiffSubId;
ConfigsvrCoordinatorId cid1(ConfigsvrCoordinatorTypeEnum::kSetClusterParameter);
cid1.setSubId("1"_sd);
coordinatorDocDiffSubId.setConfigsvrCoordinatorMetadata({cid1});
coordinatorDocDiffSubId.setParameter(BSON("a" << 1));
SetUserWriteBlockModeCoordinatorDocument coordinatorDocDiffType;
ConfigsvrCoordinatorId cid2(ConfigsvrCoordinatorTypeEnum::kSetUserWriteBlockMode);
cid2.setSubId("0"_sd);
coordinatorDocDiffType.setConfigsvrCoordinatorMetadata({cid2});
coordinatorDocDiffType.setBlock(true);
// Trying to create a second coordinator with exact same fields will just get current
// coordinator.
auto coord1 = service->getOrCreateService(opCtx.get(), coordinatorDoc.toBSON());
auto coord1_copy = service->getOrCreateService(opCtx.get(), coordinatorDoc.toBSON());
ASSERT(coord1);
// Note that this is pointer equality, so there is only one real instance.
ASSERT_EQUALS(coord1, coord1_copy);
// Trying to create a second coordinator with same type and subId but different fields will
// fail due to conflict.
ASSERT_THROWS(service->getOrCreateService(opCtx.get(), coordinatorDocSameSubId.toBSON()),
AssertionException);
// We can create a second coordinator of the same type but different subId.
auto coord2 = service->getOrCreateService(opCtx.get(), coordinatorDocDiffSubId.toBSON());
ASSERT(coord2);
ASSERT_NOT_EQUALS(coord1, coord2);
// We can create a coordinator with different type and same (or different) subId.
auto coord3 = service->getOrCreateService(opCtx.get(), coordinatorDocDiffType.toBSON());
ASSERT(coord3);
ASSERT_NOT_EQUALS(coord1, coord3);
ASSERT_NOT_EQUALS(coord2, coord3);
// Ensure all instances start before we disable the failpoint.
fp->waitForTimesEntered(fp.initialTimesEntered() + 5);
instances = {coord1, coord2, coord3};
}
for (const auto& instance : instances) {
instance->getCompletionFuture().wait();
}
}
} // namespace
} // namespace mongo
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