package com.ruoyi.framework.handler;
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import com.ruoyi.common.utils.StringUtils;
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import org.redisson.api.NameMapper;
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/*
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* redis缓存key前缀处理
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* @author ye
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* @create 2022/7/14 17:44
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*/
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public class KeyPrefixHandler implements NameMapper {
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private final String keyPrefix;
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//前缀为空 则返回空前缀
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public KeyPrefixHandler(String keyPrefix) {
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this.keyPrefix = StringUtils.isBlank(keyPrefix) ? "" : keyPrefix + ":";
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}
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//增加前缀
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@Override
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public String map(String name) {
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if (StringUtils.isBlank(name)) {
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return null;
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}
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if (StringUtils.isBlank(keyPrefix)) {
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return name;
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}
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if (!name.startsWith(keyPrefix)) {
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return keyPrefix + name;
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} else {
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return name;
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}
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}
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//去除前缀
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@Override
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public String unmap(String name) {
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if (StringUtils.isBlank(name)) {
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return null;
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}
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if (StringUtils.isBlank(keyPrefix)) {
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return name;
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}
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if (name.startsWith(keyPrefix)) {
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return name.substring(keyPrefix.length());
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}
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return name;
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}
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}
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