/**
 *    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/db/range_deleter_stats.h"

namespace mongo {
    const BSONField<int> RangeDeleterStats::TotalDeletesField("totalDeletes");
    const BSONField<int> RangeDeleterStats::PendingDeletesField("pendingDeletes");
    const BSONField<int> RangeDeleterStats::InProgressDeletesField("inProgressDeletes");

    BSONObj RangeDeleterStats::toBSON() const {
        scoped_lock sl(*_lockPtr);

        BSONObjBuilder builder;
        builder << TotalDeletesField(_totalDeletes);
        builder << PendingDeletesField(_pendingDeletes);
        builder << InProgressDeletesField(_inProgressDeletes);

        return builder.obj();
    }

    // Note: If we ever to decide to expose the other individual stats as well, we have
    // to remind the caller that calling them individually is never guaranteed to have a
    // consistent view of the stats. So toBSON should be used instead if the caller needs
    // a snapshot view of the state on more than one property.
    int RangeDeleterStats::getCurrentDeletes() const {
        scoped_lock sl(*_lockPtr);
        return _totalDeletes;
    }
}