/**
* Copyright (C) 2017 MongoDB, 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 .
*
* 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/concurrency/d_concurrency.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/repl/mock_repl_coord_server_fixture.h"
#include "mongo/db/repl/read_concern_args.h"
#include "mongo/db/service_context.h"
#include "mongo/db/session_catalog.h"
#include "mongo/stdx/future.h"
#include "mongo/stdx/memory.h"
#include "mongo/unittest/death_test.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
namespace {
class SessionCatalogTest : public MockReplCoordServerFixture {
protected:
void setUp() final {
MockReplCoordServerFixture::setUp();
auto service = opCtx()->getServiceContext();
SessionCatalog::reset_forTest(service);
SessionCatalog::create(service);
SessionCatalog::get(service)->onStepUp(opCtx());
}
SessionCatalog* catalog() {
return SessionCatalog::get(opCtx()->getServiceContext());
}
};
TEST_F(SessionCatalogTest, CheckoutAndReleaseSession) {
opCtx()->setLogicalSessionId(makeLogicalSessionIdForTest());
auto scopedSession = catalog()->checkOutSession(opCtx());
ASSERT(scopedSession.get());
ASSERT_EQ(*opCtx()->getLogicalSessionId(), scopedSession->getSessionId());
}
TEST_F(SessionCatalogTest, OperationContextCheckedOutSession) {
opCtx()->setLogicalSessionId(makeLogicalSessionIdForTest());
const TxnNumber txnNum = 20;
opCtx()->setTxnNumber(txnNum);
OperationContextSession ocs(opCtx(), true, boost::none);
auto session = OperationContextSession::get(opCtx());
ASSERT(session);
ASSERT_EQ(*opCtx()->getLogicalSessionId(), session->getSessionId());
}
TEST_F(SessionCatalogTest, OperationContextNonCheckedOutSession) {
opCtx()->setLogicalSessionId(makeLogicalSessionIdForTest());
OperationContextSession ocs(opCtx(), false, boost::none);
auto session = OperationContextSession::get(opCtx());
ASSERT(!session);
}
TEST_F(SessionCatalogTest, GetOrCreateNonExistentSession) {
const auto lsid = makeLogicalSessionIdForTest();
auto scopedSession = catalog()->getOrCreateSession(opCtx(), lsid);
ASSERT(scopedSession.get());
ASSERT_EQ(lsid, scopedSession->getSessionId());
}
TEST_F(SessionCatalogTest, GetOrCreateSessionAfterCheckOutSession) {
const auto lsid = makeLogicalSessionIdForTest();
opCtx()->setLogicalSessionId(lsid);
boost::optional ocs;
ocs.emplace(opCtx(), true, boost::none);
stdx::async(stdx::launch::async, [&] {
Client::initThreadIfNotAlready();
auto sideOpCtx = Client::getCurrent()->makeOperationContext();
auto scopedSession =
SessionCatalog::get(sideOpCtx.get())->getOrCreateSession(sideOpCtx.get(), lsid);
ASSERT(scopedSession.get());
ASSERT_EQ(lsid, scopedSession->getSessionId());
}).get();
ocs.reset();
stdx::async(stdx::launch::async, [&] {
Client::initThreadIfNotAlready();
auto sideOpCtx = Client::getCurrent()->makeOperationContext();
auto scopedSession =
SessionCatalog::get(sideOpCtx.get())->getOrCreateSession(sideOpCtx.get(), lsid);
ASSERT(scopedSession.get());
ASSERT_EQ(lsid, scopedSession->getSessionId());
}).get();
}
TEST_F(SessionCatalogTest, NestedOperationContextSession) {
opCtx()->setLogicalSessionId(makeLogicalSessionIdForTest());
{
OperationContextSession outerScopedSession(opCtx(), true, boost::none);
{
OperationContextSession innerScopedSession(opCtx(), true, boost::none);
auto session = OperationContextSession::get(opCtx());
ASSERT(session);
ASSERT_EQ(*opCtx()->getLogicalSessionId(), session->getSessionId());
}
{
auto session = OperationContextSession::get(opCtx());
ASSERT(session);
ASSERT_EQ(*opCtx()->getLogicalSessionId(), session->getSessionId());
}
}
ASSERT(!OperationContextSession::get(opCtx()));
}
TEST_F(SessionCatalogTest, CannotAccessTopLevelSessionInNestedOnes) {
opCtx()->setLogicalSessionId(makeLogicalSessionIdForTest());
opCtx()->setTxnNumber(1);
{
OperationContextSession outerScopedSession(opCtx(), true, boost::none);
auto* session = outerScopedSession.get(opCtx(), true);
ASSERT(session);
{
OperationContextSession innerScopedSession(opCtx(), true, boost::none);
// Cannot get the top level session since we're a nested one.
const bool topLevelOnly = true;
auto* innerSession = OperationContextSession::get(opCtx(), topLevelOnly);
ASSERT(!innerSession);
}
}
}
TEST_F(SessionCatalogTest, ScanSessions) {
std::vector lsids;
auto workerFn = [&](OperationContext* opCtx, Session* session) {
lsids.push_back(session->getSessionId());
};
// Scan over zero Sessions.
SessionKiller::Matcher matcherAllSessions(
KillAllSessionsByPatternSet{makeKillAllSessionsByPattern(opCtx())});
catalog()->scanSessions(opCtx(), matcherAllSessions, workerFn);
ASSERT(lsids.empty());
// Create three sessions in the catalog.
auto lsid1 = makeLogicalSessionIdForTest();
auto lsid2 = makeLogicalSessionIdForTest();
auto lsid3 = makeLogicalSessionIdForTest();
{
auto scopedSession1 = catalog()->getOrCreateSession(opCtx(), lsid1);
auto scopedSession2 = catalog()->getOrCreateSession(opCtx(), lsid2);
auto scopedSession3 = catalog()->getOrCreateSession(opCtx(), lsid3);
}
// Scan over all Sessions.
lsids.clear();
catalog()->scanSessions(opCtx(), matcherAllSessions, workerFn);
ASSERT_EQ(lsids.size(), 3U);
// Scan over all Sessions, visiting a particular Session.
SessionKiller::Matcher matcherLSID2(
KillAllSessionsByPatternSet{makeKillAllSessionsByPattern(opCtx(), lsid2)});
lsids.clear();
catalog()->scanSessions(opCtx(), matcherLSID2, workerFn);
ASSERT_EQ(lsids.size(), 1U);
ASSERT_EQ(lsids.front(), lsid2);
}
} // namespace
} // namespace mongo