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/**
* 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 <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/service_liaison_mongod.h"
#include "mongo/db/client.h"
#include "mongo/db/cursor_manager.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/service_context.h"
#include "mongo/stdx/mutex.h"
#include "mongo/util/clock_source.h"
namespace mongo {
LogicalSessionIdSet ServiceLiaisonMongod::getActiveOpSessions() const {
LogicalSessionIdSet activeSessions;
invariant(hasGlobalServiceContext());
// Walk through the service context and append lsids for all currently-running ops.
for (ServiceContext::LockedClientsCursor cursor(getGlobalServiceContext());
Client* client = cursor.next();) {
stdx::lock_guard<Client> lk(*client);
auto clientOpCtx = client->getOperationContext();
// Ignore clients without currently-running operations
if (!clientOpCtx)
continue;
// Append this op ctx's session to our list, if it has one
auto lsid = clientOpCtx->getLogicalSessionId();
if (lsid) {
activeSessions.insert(*lsid);
}
}
return activeSessions;
}
LogicalSessionIdSet ServiceLiaisonMongod::getOpenCursorSessions() const {
LogicalSessionIdSet cursorSessions;
// Append any in-use session ids from the global and collection-level cursor managers
boost::optional<ServiceContext::UniqueOperationContext> uniqueCtx;
auto client = Client::getCurrent();
auto* const opCtx = [&client, &uniqueCtx] {
if (client->getOperationContext()) {
return client->getOperationContext();
}
uniqueCtx.emplace(client->makeOperationContext());
return uniqueCtx->get();
}();
CursorManager::appendAllActiveSessions(opCtx, &cursorSessions);
return cursorSessions;
}
void ServiceLiaisonMongod::scheduleJob(PeriodicRunner::PeriodicJob job) {
invariant(hasGlobalServiceContext());
auto jobHandle = getGlobalServiceContext()->getPeriodicRunner()->makeJob(std::move(job));
jobHandle->start();
_jobs.push_back(std::move(jobHandle));
}
void ServiceLiaisonMongod::join() {
invariant(hasGlobalServiceContext());
for (auto&& jobHandle : _jobs) {
jobHandle->stop();
}
_jobs.clear();
}
Date_t ServiceLiaisonMongod::now() const {
invariant(hasGlobalServiceContext());
return getGlobalServiceContext()->getFastClockSource()->now();
}
ServiceContext* ServiceLiaisonMongod::_context() {
return getGlobalServiceContext();
}
std::pair<Status, int> ServiceLiaisonMongod::killCursorsWithMatchingSessions(
OperationContext* opCtx, const SessionKiller::Matcher& matcher) {
return CursorManager::getGlobalCursorManager()->killCursorsWithMatchingSessions(opCtx, matcher);
}
} // namespace mongo
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