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/**
* Copyright (C) 2018-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.
*/
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kDefault
#include "mongo/platform/basic.h"
#include "mongo/s/catalog/type_database.h"
#include "mongo/s/catalog_cache.h"
#include "mongo/s/catalog_cache_loader_mock.h"
#include "mongo/s/sharding_router_test_fixture.h"
namespace mongo {
namespace {
class CatalogCacheTest : public ShardingTestFixture {
protected:
void setUp() override {
ShardingTestFixture::setUp();
// Setup dummy config server
setRemote(kConfigHostAndPort);
configTargeter()->setFindHostReturnValue(kConfigHostAndPort);
// Setup catalogCache with mock loader
_catalogCacheLoader = std::make_unique<CatalogCacheLoaderMock>();
_catalogCache = std::make_unique<CatalogCache>(getServiceContext(), *_catalogCacheLoader);
// Populate the shardRegistry with the shards from kShards vector
std::vector<std::tuple<ShardId, HostAndPort>> shardInfos;
for (const auto& shardId : kShards) {
shardInfos.emplace_back(
std::make_tuple(shardId, HostAndPort(shardId.toString(), kDummyPort)));
}
addRemoteShards(shardInfos);
};
void loadDatabases(const std::vector<DatabaseType>& databases) {
for (const auto& db : databases) {
_catalogCacheLoader->setDatabaseRefreshReturnValue(db);
const auto swDatabase = _catalogCache->getDatabase(operationContext(), db.getName());
ASSERT_OK(swDatabase.getStatus());
}
// Reset the database return value to avoid false positive results
_catalogCacheLoader->setDatabaseRefreshReturnValue(kErrorStatus);
}
const NamespaceString kNss{"catalgoCacheTestDB.foo"};
const int kDummyPort{12345};
const HostAndPort kConfigHostAndPort{"DummyConfig", kDummyPort};
const std::vector<ShardId> kShards{{"0"}, {"1"}};
const Status kErrorStatus{ErrorCodes::InternalError,
"Received an unexpected CatalogCacheLoader request"};
std::unique_ptr<CatalogCacheLoaderMock> _catalogCacheLoader;
std::unique_ptr<CatalogCache> _catalogCache;
};
TEST_F(CatalogCacheTest, GetDatabase) {
const auto dbName = "testDB";
const auto dbVersion = DatabaseVersion(UUID::gen(), 1);
_catalogCacheLoader->setDatabaseRefreshReturnValue(
DatabaseType(dbName, kShards[0], true, dbVersion));
const auto swDatabase = _catalogCache->getDatabase(operationContext(), dbName);
ASSERT_OK(swDatabase.getStatus());
const auto cachedDb = swDatabase.getValue();
ASSERT_TRUE(cachedDb.shardingEnabled());
ASSERT_EQ(cachedDb.primaryId(), kShards[0]);
ASSERT_EQ(cachedDb.databaseVersion().getUuid(), dbVersion.getUuid());
ASSERT_EQ(cachedDb.databaseVersion().getLastMod(), dbVersion.getLastMod());
}
TEST_F(CatalogCacheTest, GetCachedDatabase) {
const auto dbName = "testDB";
const auto dbVersion = DatabaseVersion(UUID::gen(), 1);
loadDatabases({DatabaseType(dbName, kShards[0], true, dbVersion)});
const auto swDatabase = _catalogCache->getDatabase(operationContext(), dbName);
ASSERT_OK(swDatabase.getStatus());
const auto cachedDb = swDatabase.getValue();
ASSERT_TRUE(cachedDb.shardingEnabled());
ASSERT_EQ(cachedDb.primaryId(), kShards[0]);
ASSERT_EQ(cachedDb.databaseVersion().getUuid(), dbVersion.getUuid());
ASSERT_EQ(cachedDb.databaseVersion().getLastMod(), dbVersion.getLastMod());
}
TEST_F(CatalogCacheTest, InvalidateSingleDbOnShardRemoval) {
const auto dbName = "testDB";
const auto dbVersion = DatabaseVersion(UUID::gen(), 1);
loadDatabases({DatabaseType(dbName, kShards[0], true, dbVersion)});
_catalogCache->invalidateEntriesThatReferenceShard(kShards[0]);
_catalogCacheLoader->setDatabaseRefreshReturnValue(
DatabaseType(dbName, kShards[1], true, dbVersion));
const auto swDatabase = _catalogCache->getDatabase(operationContext(), dbName);
ASSERT_OK(swDatabase.getStatus());
auto cachedDb = swDatabase.getValue();
ASSERT_EQ(cachedDb.primaryId(), kShards[1]);
}
} // namespace
} // namespace mongo
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