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/**
* Copyright (C) 2020-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/client/replica_set_monitor.h"
#include "mongo/client/replica_set_monitor_params_gen.h"
#include "mongo/client/scanning_replica_set_monitor.h"
#include "mongo/client/streamable_replica_set_monitor.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/assert_util.h"
namespace mongo {
namespace {
class RSMDisableStreamableFlagTestFixture : public unittest::Test {
protected:
void setUp() {
setGlobalServiceContext(ServiceContext::make());
ReplicaSetMonitor::cleanup();
}
void tearDown() {
unsetParameter();
}
/**
* Sets the data of the disableStreamableReplicaSetMonitor parameter to flagValue.
*/
void setParameter(bool flagValue) {
const BSONObj newFlagParameter = BSON(kDisableStreamableFlagName << flagValue);
BSONObjIterator parameterIterator(newFlagParameter);
BSONElement newParameter = parameterIterator.next();
const auto foundParameter = findDisableStreamableServerParameter();
uassertStatusOK(foundParameter->second->set(newParameter));
ASSERT_EQ(flagValue, disableStreamableReplicaSetMonitor.load());
}
/**
* Restores the disableStreamableReplicaSetMonitor parameter to its default value.
*/
void unsetParameter() {
const auto defaultParameter = kDefaultParameter[kDisableStreamableFlagName];
const auto foundParameter = findDisableStreamableServerParameter();
uassertStatusOK(foundParameter->second->set(defaultParameter));
}
/**
* Finds the disableStreamableReplicaSetMonitor ServerParameter.
*/
ServerParameter::Map::const_iterator findDisableStreamableServerParameter() {
const ServerParameter::Map& parameterMap = ServerParameterSet::getGlobal()->getMap();
return parameterMap.find(kDisableStreamableFlagName);
}
static inline const std::string kDisableStreamableFlagName =
"disableStreamableReplicaSetMonitor";
/**
* A BSONObj containing the default for the disableStreamableReplicaSetMonitor flag.
*/
static inline const BSONObj kDefaultParameter =
BSON(kDisableStreamableFlagName << disableStreamableReplicaSetMonitor.load());
};
/**
* Checks that a ScanningReplicaSetMonitor is created when the disableStreamableReplicaSetMonitor
* flag is set to true.
*/
TEST_F(RSMDisableStreamableFlagTestFixture, checkIsScanningIfDisableStreamableIsTrue) {
setParameter(true);
auto uri = MongoURI::parse("mongodb://a,b,c/?replicaSet=name");
ASSERT_OK(uri.getStatus());
auto createdMonitor = ReplicaSetMonitor::createIfNeeded(uri.getValue());
// If the created monitor does not point to a ScanningReplicaSetMonitor, the cast returns a
// nullptr.
auto scanningMonitorCast = dynamic_cast<ScanningReplicaSetMonitor*>(createdMonitor.get());
ASSERT(scanningMonitorCast);
auto streamableMonitorCast = dynamic_cast<StreamableReplicaSetMonitor*>(createdMonitor.get());
ASSERT_FALSE(streamableMonitorCast);
}
/**
* Checks that a StreamableReplicaSetMonitor is created when the the
* disableStreamableReplicaSetMonitor flag is set to false.
*
* TODO SERVER-43332: Once the StreamableReplicaSetMonitor is integrated into the codebase, this
* test should mirror the logic in checkIsScanningIfDisableStreamableIsTrue accordingly.
*/
TEST_F(RSMDisableStreamableFlagTestFixture, checkIsStreamableIfDisableStreamableIsFalse) {
setParameter(false);
auto uri = MongoURI::parse("mongodb://a,b,c/?replicaSet=name");
ASSERT_OK(uri.getStatus());
ASSERT_THROWS_CODE(ReplicaSetMonitor::createIfNeeded(uri.getValue()), DBException, 31451);
}
} // namespace
} // namespace mongo
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