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// wiredtiger_server_status.cpp
/**
* Copyright (C) 2014 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/storage/wiredtiger/wiredtiger_server_status.h"
#include "mongo/base/checked_cast.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_kv_engine.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_record_store.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_recovery_unit.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_session_cache.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_util.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/scopeguard.h"
namespace mongo {
using std::string;
WiredTigerServerStatusSection::WiredTigerServerStatusSection(WiredTigerKVEngine* engine)
: ServerStatusSection(kWiredTigerEngineName),
_engine(engine) { }
bool WiredTigerServerStatusSection::includeByDefault() const {
return true;
}
BSONObj WiredTigerServerStatusSection::generateSection(
OperationContext* txn,
const BSONElement& configElement) const {
WiredTigerSession* session =
checked_cast<WiredTigerRecoveryUnit*>(txn->recoveryUnit())->getSession(txn);
invariant(session);
WT_SESSION* s = session->getSession();
invariant(s);
const string uri = "statistics:";
BSONObjBuilder bob;
Status status = WiredTigerUtil::exportTableToBSON(s, uri,
"statistics=(fast)", &bob);
if (!status.isOK()) {
bob.append("error", "unable to retrieve statistics");
bob.append("code", static_cast<int>(status.code()));
bob.append("reason", status.reason());
}
WiredTigerRecoveryUnit::appendGlobalStats(bob);
return bob.obj();
}
} // namespace mongo
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