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// wiredtiger_session_cache_test.cpp
/**
* Copyright (C) 2019-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 <sstream>
#include <string>
#include "mongo/base/string_data.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_session_cache.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_util.h"
#include "mongo/unittest/temp_dir.h"
#include "mongo/unittest/unittest.h"
#include "mongo/util/system_clock_source.h"
namespace mongo {
using std::string;
using std::stringstream;
class WiredTigerConnection {
public:
WiredTigerConnection(StringData dbpath, StringData extraStrings) : _conn(NULL) {
std::stringstream ss;
ss << "create,";
ss << extraStrings;
string config = ss.str();
_fastClockSource = stdx::make_unique<SystemClockSource>();
int ret = wiredtiger_open(dbpath.toString().c_str(), NULL, config.c_str(), &_conn);
ASSERT_OK(wtRCToStatus(ret));
ASSERT(_conn);
}
~WiredTigerConnection() {
_conn->close(_conn, NULL);
}
WT_CONNECTION* getConnection() const {
return _conn;
}
ClockSource* getClockSource() {
return _fastClockSource.get();
}
private:
WT_CONNECTION* _conn;
std::unique_ptr<ClockSource> _fastClockSource;
};
class WiredTigerSessionCacheHarnessHelper {
public:
WiredTigerSessionCacheHarnessHelper(StringData extraStrings)
: _dbpath("wt_test"),
_connection(_dbpath.path(), extraStrings),
_sessionCache(_connection.getConnection(), _connection.getClockSource()) {}
WiredTigerSessionCache* getSessionCache() {
return &_sessionCache;
}
private:
unittest::TempDir _dbpath;
WiredTigerConnection _connection;
WiredTigerSessionCache _sessionCache;
};
TEST(WiredTigerSessionCacheTest, CheckSessionCacheCleanup) {
WiredTigerSessionCacheHarnessHelper harnessHelper("");
WiredTigerSessionCache* sessionCache = harnessHelper.getSessionCache();
ASSERT_EQUALS(sessionCache->getIdleSessionsCount(), 0U);
{
UniqueWiredTigerSession _session = sessionCache->getSession();
ASSERT_EQUALS(sessionCache->getIdleSessionsCount(), 0U);
}
// Destroying of a session puts it in the session cache
ASSERT_EQUALS(sessionCache->getIdleSessionsCount(), 1U);
// An idle timeout of 0 means never expire idle sessions
sessionCache->closeExpiredIdleSessions(0);
ASSERT_EQUALS(sessionCache->getIdleSessionsCount(), 1U);
sleepmillis(10);
// Expire sessions that have been idle for 10 secs
sessionCache->closeExpiredIdleSessions(10000);
ASSERT_EQUALS(sessionCache->getIdleSessionsCount(), 1U);
// Expire sessions that have been idle for 2 millisecs
sessionCache->closeExpiredIdleSessions(2);
ASSERT_EQUALS(sessionCache->getIdleSessionsCount(), 0U);
}
} // namespace mongo
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