/*
 * Licensed to Crate under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.  Crate licenses this file
 * to you under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.  See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial
 * agreement.
 */

package io.crate.operation.reference.sys.node.fs;

import io.crate.monitor.ExtendedFsStats;
import io.crate.operation.reference.sys.node.SimpleNodeStatsExpression;

import java.util.HashMap;
import java.util.Map;

import static io.crate.operation.reference.sys.node.fs.NodeFsStatsExpression.*;

public class NodeFsTotalStatsExpression extends SimpleNodeStatsExpression<Map<String, Long>> {

    public NodeFsTotalStatsExpression() {
    }

    private Map<String, Long> getTotals() {
        Map<String, Long> totals = new HashMap<>();
        ExtendedFsStats.Info totalInfo = this.row.extendedFsStats().total();
        totals.put(SIZE, totalInfo.total() == -1 ? -1 : totalInfo.total() * 1024);
        totals.put(USED, totalInfo.used() == -1 ? -1 : totalInfo.used() * 1024);
        totals.put(AVAILABLE, totalInfo.available() == -1 ? -1 : totalInfo.available() * 1024);
        totals.put(READS, totalInfo.diskReads());
        totals.put(BYTES_READ, totalInfo.diskReadSizeInBytes());
        totals.put(WRITES, totalInfo.diskWrites());
        totals.put(BYTES_WRITTEN, totalInfo.diskWriteSizeInBytes());
        return totals;
    }

    @Override
    public Map<String, Long> innerValue() {
        return getTotals();
    }
}