/*
|
* Copyright 1999-2018 Alibaba Group Holding Ltd.
|
*
|
* 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 com.alibaba.csp.sentinel.dashboard.util;
|
|
import java.util.Optional;
|
|
import com.alibaba.csp.sentinel.util.StringUtil;
|
|
import com.alibaba.csp.sentinel.dashboard.datasource.entity.SentinelVersion;
|
|
/**
|
* Util class for parsing version.
|
*
|
* @author Eric Zhao
|
* @since 0.2.1
|
*/
|
public final class VersionUtils {
|
|
/**
|
* Parse version of Sentinel from raw string.
|
*
|
* @param verStr version string
|
* @return parsed {@link SentinelVersion} if the version is valid; empty if
|
* there is something wrong with the format
|
*/
|
public static Optional<SentinelVersion> parseVersion(String verStr) {
|
if (StringUtil.isBlank(verStr)) {
|
return Optional.empty();
|
}
|
try {
|
String versionFull = verStr;
|
SentinelVersion version = new SentinelVersion();
|
|
// postfix
|
int index = versionFull.indexOf("-");
|
if (index == 0) {
|
// Start with "-"
|
return Optional.empty();
|
}
|
if (index == versionFull.length() - 1) {
|
// End with "-"
|
} else if (index > 0) {
|
version.setPostfix(versionFull.substring(index + 1));
|
}
|
|
if (index >= 0) {
|
versionFull = versionFull.substring(0, index);
|
}
|
|
// x.x.x
|
int segment = 0;
|
int[] ver = new int[3];
|
while (segment < ver.length) {
|
index = versionFull.indexOf('.');
|
if (index < 0) {
|
if (versionFull.length() > 0) {
|
ver[segment] = Integer.valueOf(versionFull);
|
}
|
break;
|
}
|
ver[segment] = Integer.valueOf(versionFull.substring(0, index));
|
versionFull = versionFull.substring(index + 1);
|
segment ++;
|
}
|
|
if (ver[0] < 1) {
|
// Wrong format, return empty.
|
return Optional.empty();
|
} else {
|
return Optional.of(version
|
.setMajorVersion(ver[0])
|
.setMinorVersion(ver[1])
|
.setFixVersion(ver[2]));
|
}
|
} catch (Exception ex) {
|
// Parse fail, return empty.
|
return Optional.empty();
|
}
|
}
|
|
private VersionUtils() {}
|
}
|
