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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.benchmark;
import com.yahoo.jdisc.application.UriPattern;
import org.junit.jupiter.api.Test;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.TimeUnit;
/**
* @author Simon Thoresen Hult
*/
public class UriMatchingTestCase {
private static final int NUM_MATCHES = 100;
private static long preventOptimization = 0;
@Test
void requireThatUriPatternMatchingIsFast() {
List<String> inputs = Arrays.asList(
"other://host/",
"scheme://other/",
"scheme://host/",
"scheme://host/foo",
"scheme://host/foo/bar",
"scheme://host/foo/bar/baz",
"scheme://host/other",
"scheme://host/other/bar",
"scheme://host/other/bar/baz",
"scheme://host/foo/other",
"scheme://host/foo/other/baz",
"scheme://host/foo/bar/other",
"scheme://host:69/",
"scheme://host:69/foo",
"scheme://host:69/foo/bar",
"scheme://host:69/foo/bar/baz",
"scheme://host:96/");
benchmarkMatch("*://*/*", inputs); // warmup
runBenchmark("*://*/*", inputs);
runBenchmark("scheme://*/*", inputs);
runBenchmark("scheme://host/*", inputs);
runBenchmark("scheme://host:69/*", inputs);
runBenchmark("scheme://host:69/foo", inputs);
runBenchmark("scheme://host:69/foo/bar", inputs);
runBenchmark("scheme://host:69/foo/bar/baz", inputs);
runBenchmark("*://host:69/foo/bar/baz", inputs);
runBenchmark("*://*/foo/*", inputs);
runBenchmark("*://*/foo/*/baz", inputs);
runBenchmark("*://*/foo/bar/*", inputs);
runBenchmark("*://*/foo/bar/baz", inputs);
runBenchmark("*://*/*/bar", inputs);
runBenchmark("*://*/*/bar/baz", inputs);
runBenchmark("*://*/*/*/baz", inputs);
System.out.println(">>>>> " + preventOptimization);
}
private static void runBenchmark(String pattern, List<String> inputs) {
System.out.format("%-30s %10d\n", pattern, benchmarkMatch(pattern, inputs));
}
private static long benchmarkMatch(String pattern, List<String> inputs) {
UriPattern compiled = new UriPattern(pattern);
List<URI> uriList = new ArrayList<>(inputs.size());
for (String input : inputs) {
uriList.add(URI.create(input));
}
long now = System.nanoTime();
for (int i = 0; i < NUM_MATCHES; ++i) {
for (URI uri : uriList) {
UriPattern.Match match = compiled.match(uri);
preventOptimization += match != null ? match.groupCount() : 1;
}
}
return TimeUnit.NANOSECONDS.toMicros(System.nanoTime() - now);
}
}
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