org.apache.metron.profiler.client.window.predicates.DateSpecifierPredicate.java Source code

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Here is the source code for org.apache.metron.profiler.client.window.predicates.DateSpecifierPredicate.java

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/*
 *
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF 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.
 *
 */
package org.apache.metron.profiler.client.window.predicates;

import org.apache.commons.lang3.time.DateUtils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Predicate;

/**
 * An inclusion/exclusion specifier which matches against a specific date.
 * The default format is yyyy/MM/dd
 */
public class DateSpecifierPredicate implements Predicate<Long> {
    final static ThreadLocal<SimpleDateFormat> FORMAT = new ThreadLocal<SimpleDateFormat>() {

        @Override
        protected SimpleDateFormat initialValue() {
            return new SimpleDateFormat("yyyy/MM/dd");
        }
    };
    Date date;

    /**
     * Create a predicate given a date and (optionally) a format.  If no format is specified, it is assumed to be
     * yyyy/MM/dd
     * @param args
     */
    public DateSpecifierPredicate(List<String> args) {
        if (args.size() == 1) {
            //just the date, use the default.
            try {
                date = FORMAT.get().parse(args.get(0));
            } catch (ParseException e) {
                throw new IllegalStateException(
                        "Unable to process " + args.get(0) + " as a date using " + FORMAT.get().toPattern());
            }
        } else if (args.size() == 0) {
            throw new IllegalStateException("You must specify at least a date and optionally a format");
        } else {
            String dateStr = args.get(0);
            String format = args.get(1);
            try {
                date = new SimpleDateFormat(format).parse(dateStr);
            } catch (ParseException e) {
                throw new IllegalStateException("Unable to process " + dateStr + " as a date using " + format);
            }
        }
    }

    /**
     * Returns true if the timestamp happens on the specified day and false otherwise.
     * @param ts
     * @return
     */
    @Override
    public boolean test(Long ts) {
        return DateUtils.isSameDay(new Date(ts), date);
    }
}