io.netty.microbenchmark.common.IsValidIpV4Benchmark Maven / Gradle / Ivy
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/*
* Copyright 2017 The Netty Project
*
* The Netty Project 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:
*
* https://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 io.netty.microbenchmark.common;
import io.netty.microbench.util.AbstractMicrobenchmark;
import io.netty.util.NetUtil;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Threads;
import org.openjdk.jmh.annotations.Warmup;
import java.util.concurrent.TimeUnit;
@Threads(1)
@Warmup(iterations = 3)
@Measurement(iterations = 3)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
public class IsValidIpV4Benchmark extends AbstractMicrobenchmark {
@Param({ "127.0.0.1", "255.255.255.255", "1.1.1.1", "127.0.0.256", "127.0.0.1.1", "127.0.0", "[2001::1]" })
private String ip;
public static boolean isValidIpV4AddressOld(String value) {
int periods = 0;
int i;
int length = value.length();
if (length > 15) {
return false;
}
char c;
StringBuilder word = new StringBuilder();
for (i = 0; i < length; i++) {
c = value.charAt(i);
if (c == '.') {
periods++;
if (periods > 3) {
return false;
}
if (word.length() == 0) {
return false;
}
if (Integer.parseInt(word.toString()) > 255) {
return false;
}
word.delete(0, word.length());
} else if (!Character.isDigit(c)) {
return false;
} else {
if (word.length() > 2) {
return false;
}
word.append(c);
}
}
if (word.length() == 0 || Integer.parseInt(word.toString()) > 255) {
return false;
}
return periods == 3;
}
// Tests
@Benchmark
public boolean isValidIpV4AddressOld() {
return isValidIpV4AddressOld(ip);
}
@Benchmark
public boolean isValidIpV4AddressNew() {
return NetUtil.isValidIpV4Address(ip);
}
}