/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.io.pagecache.tracing.version;

import org.neo4j.io.pagecache.tracing.PageCacheTracer;

class DefaultFileTruncateEvent implements FileTruncateEvent {
    private final PageCacheTracer pageCacheTracer;

    DefaultFileTruncateEvent(PageCacheTracer pageCacheTracer) {
        this.pageCacheTracer = pageCacheTracer;
    }

    @Override
    public void close() {
        pageCacheTracer.filesTruncated(1);
    }

    @Override
    public void truncatedBytes(long oldLastPage, long pagesToKeep, int filePageSize) {
        pageCacheTracer.bytesTruncated((oldLastPage + 1 - pagesToKeep) * filePageSize);
    }
}
