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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.
*/
#include "mongo/platform/basic.h"
#include <memory>
#include "mongo/db/catalog/capped_utils.h"
#include "mongo/db/client.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/repl/replication_coordinator_mock.h"
#include "mongo/db/repl/storage_interface_impl.h"
#include "mongo/db/service_context_d_test_fixture.h"
#include "mongo/db/storage/durable_catalog.h"
#include "mongo/unittest/unittest.h"
namespace {
using namespace mongo;
class CappedUtilsTest : public ServiceContextMongoDTest {
private:
void setUp() override;
void tearDown() override;
protected:
// Use StorageInterface to access storage features below catalog interface.
std::unique_ptr<repl::StorageInterface> _storage;
};
void CappedUtilsTest::setUp() {
// Set up mongod.
ServiceContextMongoDTest::setUp();
auto service = getServiceContext();
// Set up ReplicationCoordinator and ensure that we are primary.
auto replCoord = std::make_unique<repl::ReplicationCoordinatorMock>(service);
ASSERT_OK(replCoord->setFollowerMode(repl::MemberState::RS_PRIMARY));
repl::ReplicationCoordinator::set(service, std::move(replCoord));
repl::setOplogCollectionName(service);
_storage = std::make_unique<repl::StorageInterfaceImpl>();
}
void CappedUtilsTest::tearDown() {
_storage = {};
// Tear down mongod.
ServiceContextMongoDTest::tearDown();
}
/**
* Creates an OperationContext.
*/
ServiceContext::UniqueOperationContext makeOpCtx() {
auto opCtx = cc().makeOperationContext();
repl::createOplog(opCtx.get());
return opCtx;
}
/**
* Returns true if collection exists.
*/
bool collectionExists(OperationContext* opCtx, const NamespaceString& nss) {
return AutoGetCollectionForRead(opCtx, nss).getCollection() != nullptr;
}
/**
* Returns collection options.
*/
CollectionOptions getCollectionOptions(OperationContext* opCtx, const NamespaceString& nss) {
AutoGetCollectionForRead collection(opCtx, nss);
ASSERT_TRUE(collection) << "Unable to get collections options for " << nss
<< " because collection does not exist.";
return DurableCatalog::get(opCtx)->getCollectionOptions(opCtx, collection->getCatalogId());
}
// Size of capped collection to be passed to convertToCapped() which accepts a double.
// According to documentation, the size (in bytes) of capped collection must be a minimum of 4096
// and a multiple of 256.
const double cappedCollectionSize = 8192.0;
TEST_F(CappedUtilsTest, ConvertToCappedReturnsNamespaceNotFoundIfCollectionIsMissing) {
NamespaceString nss("test.t");
auto opCtx = makeOpCtx();
ASSERT_FALSE(collectionExists(opCtx.get(), nss));
ASSERT_THROWS_CODE(
convertToCapped(opCtx.get(), nss, 1000.0), DBException, ErrorCodes::NamespaceNotFound);
}
TEST_F(CappedUtilsTest, ConvertToCappedUpdatesCollectionOptionsOnSuccess) {
NamespaceString nss("test.t");
auto opCtx = makeOpCtx();
ASSERT_OK(_storage->createCollection(opCtx.get(), nss, {}));
auto options = getCollectionOptions(opCtx.get(), nss);
ASSERT_FALSE(options.capped);
convertToCapped(opCtx.get(), nss, cappedCollectionSize);
options = getCollectionOptions(opCtx.get(), nss);
ASSERT_TRUE(options.capped);
ASSERT_APPROX_EQUAL(cappedCollectionSize, options.cappedSize, 0.001)
<< "unexpected capped collection size: " << options.toBSON();
}
TEST_F(CappedUtilsTest, ConvertToCappedReturnsNamespaceNotFoundIfCollectionIsDropPending) {
NamespaceString nss("test.t");
repl::OpTime dropOpTime(Timestamp(Seconds(100), 0), 1LL);
auto dropPendingNss = nss.makeDropPendingNamespace(dropOpTime);
auto opCtx = makeOpCtx();
ASSERT_OK(_storage->createCollection(opCtx.get(), dropPendingNss, {}));
auto options = getCollectionOptions(opCtx.get(), dropPendingNss);
ASSERT_FALSE(options.capped);
ASSERT_THROWS_CODE(convertToCapped(opCtx.get(), dropPendingNss, cappedCollectionSize),
DBException,
ErrorCodes::NamespaceNotFound);
options = getCollectionOptions(opCtx.get(), dropPendingNss);
ASSERT_FALSE(options.capped);
}
} // namespace
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