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The AHAS sentinel client

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/*
 * Copyright 1999-2019 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
 *
 *      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 com.alibaba.csp.ahas.sentinel.datasource.parser;

import java.util.List;

import com.alibaba.csp.sentinel.datasource.Converter;
import com.alibaba.csp.sentinel.datasource.acm.RulesAcmFormat;
import com.alibaba.csp.sentinel.slots.block.flow.param.ParamFlowRule;
import com.alibaba.csp.sentinel.util.StringUtil;
import com.alibaba.fastjson.JSON;

/**
 * @author Eric Zhao
 */
public class ParamFlowRuleParser implements Converter> {

    @Override
    public List convert(String source) {
        if (StringUtil.isBlank(source)) {
            return null;
        }
        String data = new RulesAcmFormat(source).getData();
        if (StringUtil.isBlank(data)) {
            return null;
        }
        return JSON.parseArray(data, ParamFlowRule.class);
    }
}