tech.beshu.ror.utils.MicrobenchMatch.java Source code

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Here is the source code for tech.beshu.ror.utils.MicrobenchMatch.java

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/*
 *    This file is part of ReadonlyREST.
 *
 *    ReadonlyREST 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.
 *
 *    ReadonlyREST 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 ReadonlyREST.  If not, see http://www.gnu.org/licenses/
 */

package tech.beshu.ror.utils;

import com.google.common.collect.Sets;
import org.apache.commons.lang.RandomStringUtils;
import tech.beshu.ror.commons.utils.MatcherWithWildcards;

import java.util.Set;

public class MicrobenchMatch {

    public static void main(String[] args) {

        String haystack = RandomStringUtils.random(10) + "logstash-*" + RandomStringUtils.random(10);
        Set<String> needles = Sets.newHashSet("*logstash-*");
        int iterations = (int) Math.pow(10, 7);
        Long start;

        // OLD
        MatcherWithWildcards matcher = new MatcherWithWildcards(needles);
        start = System.currentTimeMillis();
        for (int i = 0; i < iterations; i++) {
            if (!matcher.match(haystack + i))
                throw new RuntimeException("lol");
        }
        Long timeOld = System.currentTimeMillis() - start;
        System.out.println("old: " + timeOld + " ms");

        // NEW
        MatcherWithWildcards minimatch = new MatcherWithWildcards(needles);
        start = System.currentTimeMillis();
        for (int i = 0; i < iterations; i++) {
            if (!minimatch.match(haystack + i))
                throw new RuntimeException("lol");
        }
        Long timeNew = (System.currentTimeMillis() - start);
        System.out.println("new: " + (System.currentTimeMillis() - start) + " ms");

        System.out.println("Gain: " + (((timeOld - timeNew) * 1f) / timeOld) * 100 + "%");

    }
}