ConversionHelper.java

// Copyright 2017 JanusGraph Authors
//
// Licensed 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.

package org.janusgraph.util.encoding;

import com.google.common.base.Preconditions;


import java.time.Duration;
import java.time.temporal.TemporalUnit;

/**
 * @author Matthias Broecheler (me@matthiasb.com)
 */
public class ConversionHelper {

    public static final int getTTLSeconds(Duration duration) {
        Preconditions.checkArgument(duration!=null && !duration.isZero(),"Must provide non-zero TTL");
        long ttlSeconds = Math.max(1,duration.getSeconds());
        assert ttlSeconds>0;
        Preconditions.checkArgument(ttlSeconds<=Integer.MAX_VALUE, "tll value is too large [%s] - value overflow",duration);
        return (int)ttlSeconds;
    }

    public static final int getTTLSeconds(long time, TemporalUnit unit) {
        return getTTLSeconds(Duration.of(time,unit));
    }

}