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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.
*/
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kNetwork
#include "mongo/client/server_is_master_monitor.h"
#include <boost/optional/optional_io.hpp>
#include "mongo/executor/task_executor.h"
#include "mongo/logv2/log.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
class SingleServerIsMasterMonitorExpeditedFixture : public unittest::Test {
public:
struct TestCase {
boost::optional<Milliseconds> timeElapsedSinceLastIsMaster;
Milliseconds previousRefreshPeriod;
boost::optional<Milliseconds> expectedResult;
};
void verifyTestCase(TestCase testCase) {
LOGV2_INFO(4712103,
"TestCase",
"timeElapsedSinceLastIsMaster"_attr = testCase.timeElapsedSinceLastIsMaster,
"previousRefreshPeriod"_attr = testCase.previousRefreshPeriod,
"expeditedRefreshPeriod"_attr = kExpeditedRefreshPeriod);
auto result = SingleServerIsMasterMonitor::calculateExpeditedDelayUntilNextCheck(
testCase.timeElapsedSinceLastIsMaster,
kExpeditedRefreshPeriod,
testCase.previousRefreshPeriod);
ASSERT_EQUALS(testCase.expectedResult, result);
}
static inline const auto kExpeditedRefreshPeriod = Milliseconds(500);
static inline const auto kLongRefreshPeriod = Milliseconds(10 * 1000);
static inline const auto kDelta = Milliseconds(100);
static inline const auto kOneMs = Milliseconds(1);
static inline const auto kZeroMs = Milliseconds(0);
};
TEST_F(SingleServerIsMasterMonitorExpeditedFixture, NoPreviousRequest) {
verifyTestCase(TestCase{boost::none, kLongRefreshPeriod, Milliseconds(0)});
verifyTestCase(TestCase{boost::none, kExpeditedRefreshPeriod, Milliseconds(0)});
}
TEST_F(SingleServerIsMasterMonitorExpeditedFixture,
PreviousRequestLongerThanExpeditedRefreshPeriod) {
verifyTestCase(TestCase{kExpeditedRefreshPeriod + kDelta, kLongRefreshPeriod, Milliseconds(0)});
verifyTestCase(
TestCase{kExpeditedRefreshPeriod + kDelta, kExpeditedRefreshPeriod, Milliseconds(0)});
}
TEST_F(SingleServerIsMasterMonitorExpeditedFixture, PreviousRequestEqualLongRefreshPeriod) {
verifyTestCase(TestCase{kLongRefreshPeriod, kLongRefreshPeriod, boost::none});
verifyTestCase(TestCase{kLongRefreshPeriod, kExpeditedRefreshPeriod, Milliseconds(0)});
}
TEST_F(SingleServerIsMasterMonitorExpeditedFixture, PreviousRequestEqualExpeditedRefreshPeriod) {
verifyTestCase(TestCase{kExpeditedRefreshPeriod, kLongRefreshPeriod, Milliseconds(0)});
verifyTestCase(TestCase{kExpeditedRefreshPeriod, kExpeditedRefreshPeriod, boost::none});
}
TEST_F(SingleServerIsMasterMonitorExpeditedFixture,
PreviousRequestShorterThanExpeditedRefreshPeriod) {
verifyTestCase(
TestCase{kExpeditedRefreshPeriod - kDelta, kLongRefreshPeriod, Milliseconds(kDelta)});
verifyTestCase(
TestCase{kExpeditedRefreshPeriod - kDelta, kExpeditedRefreshPeriod, boost::none});
}
TEST_F(SingleServerIsMasterMonitorExpeditedFixture, PreviousRequestImmediatelyBefore) {
verifyTestCase(TestCase{kOneMs, kLongRefreshPeriod, kExpeditedRefreshPeriod - kOneMs});
verifyTestCase(TestCase{kOneMs, kExpeditedRefreshPeriod, boost::none});
}
TEST_F(SingleServerIsMasterMonitorExpeditedFixture, PreviousRequestConcurrent) {
verifyTestCase(TestCase{kZeroMs, kLongRefreshPeriod, kExpeditedRefreshPeriod});
verifyTestCase(TestCase{kZeroMs, kExpeditedRefreshPeriod, boost::none});
}
} // namespace mongo
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