com.alibaba.nacos.client.config.common.GroupKey Maven / Gradle / Ivy
/*
* 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.nacos.client.config.common;
import com.alibaba.nacos.common.utils.StringUtils;
/**
* Synthesize the form of dataId+groupId. Escapes reserved characters in dataId and groupId.
*
* @author Nacos
*/
public class GroupKey {
private static final char PLUS = '+';
private static final char PERCENT = '%';
private static final char TWO = '2';
private static final char B = 'B';
private static final char FIVE = '5';
public static String getKey(String dataId, String group) {
return getKey(dataId, group, "");
}
public static String getKey(String dataId, String group, String datumStr) {
return doGetKey(dataId, group, datumStr);
}
public static String getKeyTenant(String dataId, String group, String tenant) {
return doGetKey(dataId, group, tenant);
}
private static String doGetKey(String dataId, String group, String datumStr) {
if (StringUtils.isBlank(dataId)) {
throw new IllegalArgumentException("invalid dataId");
}
if (StringUtils.isBlank(group)) {
throw new IllegalArgumentException("invalid group");
}
StringBuilder sb = new StringBuilder();
urlEncode(dataId, sb);
sb.append(PLUS);
urlEncode(group, sb);
if (StringUtils.isNotEmpty(datumStr)) {
sb.append(PLUS);
urlEncode(datumStr, sb);
}
return sb.toString();
}
/**
* Parse key.
*
* @param groupKey group key
* @return parsed key
*/
public static String[] parseKey(String groupKey) {
StringBuilder sb = new StringBuilder();
String dataId = null;
String group = null;
String tenant = null;
for (int i = 0; i < groupKey.length(); ++i) {
char c = groupKey.charAt(i);
if (PLUS == c) {
if (null == dataId) {
dataId = sb.toString();
sb.setLength(0);
} else if (null == group) {
group = sb.toString();
sb.setLength(0);
} else {
throw new IllegalArgumentException("invalid groupkey:" + groupKey);
}
} else if (PERCENT == c) {
char next = groupKey.charAt(++i);
char nextnext = groupKey.charAt(++i);
if (TWO == next && B == nextnext) {
sb.append(PLUS);
} else if (TWO == next && FIVE == nextnext) {
sb.append(PERCENT);
} else {
throw new IllegalArgumentException("invalid groupkey:" + groupKey);
}
} else {
sb.append(c);
}
}
if (group == null) {
group = sb.toString();
} else {
tenant = sb.toString();
}
if (StringUtils.isBlank(dataId)) {
throw new IllegalArgumentException("invalid dataId");
}
if (StringUtils.isBlank(group)) {
throw new IllegalArgumentException("invalid group");
}
return new String[] {dataId, group, tenant};
}
/**
* + -> %2B % -> %25.
*/
static void urlEncode(String str, StringBuilder sb) {
for (int idx = 0; idx < str.length(); ++idx) {
char c = str.charAt(idx);
if (PLUS == c) {
sb.append("%2B");
} else if (PERCENT == c) {
sb.append("%25");
} else {
sb.append(c);
}
}
}
}