fm.last.citrine.web.LastRunPeriodFormatter.java Source code

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Here is the source code for fm.last.citrine.web.LastRunPeriodFormatter.java

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/*
 * Copyright 2012 Last.fm
 *
 *  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 fm.last.citrine.web;

import java.util.concurrent.TimeUnit;

import org.joda.time.Period;
import org.joda.time.format.PeriodFormatter;
import org.joda.time.format.PeriodFormatterBuilder;

import fm.last.citrine.model.TaskRun;

public class LastRunPeriodFormatter {

    private static final String FINAL_SEPARATOR = " and ";
    private static final String SEPARATOR = ", ";
    private final PeriodFormatter periodFormatter = new PeriodFormatterBuilder().appendYears()
            .appendSuffix(" year", " years").appendSeparator(SEPARATOR, FINAL_SEPARATOR).appendMonths()
            .appendSuffix(" month", " months").appendSeparator(SEPARATOR, FINAL_SEPARATOR).appendWeeks()
            .appendSuffix(" week", " weeks").appendSeparator(SEPARATOR, FINAL_SEPARATOR).appendDays()
            .appendSuffix(" day", " days").appendSeparator(SEPARATOR, FINAL_SEPARATOR).appendHours()
            .appendSuffix(" hour", " hours").appendSeparator(SEPARATOR, FINAL_SEPARATOR).appendMinutes()
            .appendSuffix(" minute", " minutes").toFormatter();

    public String printLastRun(TaskRun mostRecentTaskRun) {
        String result = "Never";
        if (mostRecentTaskRun != null) {
            // Just started jobs give a time-stamp of less then a minute need to set it to zero otherwise nothing gets printed
            long now = System.currentTimeMillis();
            long recentTaskTime = mostRecentTaskRun.getStartDate().getTime();
            long duration = now - recentTaskTime;
            Period period;
            if (duration < TimeUnit.MINUTES.toMillis(1)) {
                period = new Period(0);
            } else {
                period = new Period(recentTaskTime, now);
            }
            result = periodFormatter.print(period) + " ago";
        }
        return result;
    }

}