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/**
* Copyright (C) 2013 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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/client.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/service_context.h"
#include "mongo/db/service_context_noop.h"
#include "mongo/stdx/memory.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/clock_source_mock.h"
#include "mongo/util/tick_source_mock.h"
#include "mongo/util/time_support.h"
namespace mongo {
namespace {
class OperationDeadlineTests : public unittest::Test {
public:
void setUp() {
auto uniqueMockClock = stdx::make_unique<ClockSourceMock>();
mockClock = uniqueMockClock.get();
service = stdx::make_unique<ServiceContextNoop>();
service->setFastClockSource(std::move(uniqueMockClock));
service->setTickSource(stdx::make_unique<TickSourceMock>());
client = service->makeClient("OperationDeadlineTest");
}
ClockSourceMock* mockClock;
std::unique_ptr<ServiceContext> service;
ServiceContext::UniqueClient client;
};
TEST_F(OperationDeadlineTests, OperationDeadlineExpiration) {
auto txn = client->makeOperationContext();
txn->setDeadlineAfterNowBy(Seconds{1});
mockClock->advance(Milliseconds{500});
ASSERT_OK(txn->checkForInterruptNoAssert());
// 1ms before relative deadline reports no interrupt
mockClock->advance(Milliseconds{499});
ASSERT_OK(txn->checkForInterruptNoAssert());
// Exactly at deadline reports no interrupt, because setDeadlineAfterNowBy adds one clock
// precision unit to the deadline, to ensure that the deadline does not expire in less than the
// requested amount of time.
mockClock->advance(Milliseconds{1});
ASSERT_OK(txn->checkForInterruptNoAssert());
// Since the mock clock's precision is 1ms, at test start + 1001 ms, we expect
// checkForInterruptNoAssert to return ExceededTimeLimit.
mockClock->advance(Milliseconds{1});
ASSERT_EQ(ErrorCodes::ExceededTimeLimit, txn->checkForInterruptNoAssert());
// Also at times greater than start + 1001ms, we expect checkForInterruptNoAssert to keep
// returning ExceededTimeLimit.
mockClock->advance(Milliseconds{1});
ASSERT_EQ(ErrorCodes::ExceededTimeLimit, txn->checkForInterruptNoAssert());
}
template <typename D>
void assertLargeRelativeDeadlineLikeInfinity(Client& client, D maxTime) {
auto txn = client.makeOperationContext();
txn->setDeadlineAfterNowBy(maxTime);
ASSERT_FALSE(txn->hasDeadline()) << "Tried to set maxTime to " << maxTime;
}
TEST_F(OperationDeadlineTests, VeryLargeRelativeDeadlinesHours) {
ASSERT_FALSE(client->makeOperationContext()->hasDeadline());
assertLargeRelativeDeadlineLikeInfinity(*client, Hours::max());
}
TEST_F(OperationDeadlineTests, VeryLargeRelativeDeadlinesMinutes) {
assertLargeRelativeDeadlineLikeInfinity(*client, Minutes::max());
}
TEST_F(OperationDeadlineTests, VeryLargeRelativeDeadlinesSeconds) {
assertLargeRelativeDeadlineLikeInfinity(*client, Seconds::max());
}
TEST_F(OperationDeadlineTests, VeryLargeRelativeDeadlinesMilliseconds) {
assertLargeRelativeDeadlineLikeInfinity(*client, Milliseconds::max());
}
TEST_F(OperationDeadlineTests, VeryLargeRelativeDeadlinesMicroseconds) {
assertLargeRelativeDeadlineLikeInfinity(*client, Microseconds::max());
}
TEST_F(OperationDeadlineTests, VeryLargeRelativeDeadlinesNanoseconds) {
// Nanoseconds::max() is less than Microseconds::max(), so it is possible to set
// a deadline of that duration.
auto txn = client->makeOperationContext();
txn->setDeadlineAfterNowBy(Nanoseconds::max());
ASSERT_TRUE(txn->hasDeadline());
ASSERT_EQ(mockClock->now() + mockClock->getPrecision() +
duration_cast<Milliseconds>(Nanoseconds::max()),
txn->getDeadline());
}
} // namespace
} // namespace mongo
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