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package io.metersphere.utils;

import com.alibaba.fastjson.JSON;
import io.github.ningyu.jmeter.plugin.dubbo.sample.DubboSample;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.jmeter.extractor.JSR223PostProcessor;
import org.apache.jmeter.extractor.RegexExtractor;
import org.apache.jmeter.extractor.XPath2Extractor;
import org.apache.jmeter.extractor.json.jsonpath.JSONPostProcessor;
import org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy;
import org.apache.jmeter.protocol.jdbc.sampler.JDBCSampler;
import org.apache.jmeter.threads.JMeterVariables;
import org.apache.jorphan.collections.HashTree;

import java.util.*;

public class JMeterVars {

    private JMeterVars() {
    }

    /**
     * 数据和线程变量保持一致
     */
    private static Map variables = new HashMap<>();

    /**
     * 线程执行过程调用提取变量值
     *
     * @param testId
     * @param vars
     * @param extract
     */
    public static void addVars(String testId, JMeterVariables vars, String extract) {
        JMeterVariables vs = variables.get(testId);
        if (vs == null) {
            vs = new JMeterVariables();
        }
        if (!StringUtils.isEmpty(extract) && vars != null) {
            List extracts = Arrays.asList(extract.split(";"));
            if (CollectionUtils.isNotEmpty(extracts)) {
                for (String item : extracts) {
                    String nrKey = item + "_matchNr";
                    Object nr = vars.get(nrKey);
                    JMeterVariables jMeterVariables = new JMeterVariables();
                    if (nr != null) {
                        int nrv = 0;
                        try {
                            nrv = Integer.valueOf(String.valueOf(nr));
                        } catch (Exception e) {
                        }
                        if (nrv > 0) {
                            List data = new ArrayList<>();
                            for (int i = 1; i < nrv + 1; i++) {
                                data.add(vars.get(item + "_" + i));
                            }
                            String array = JSON.toJSONString(data);
                            jMeterVariables.put(item, array);
                        }
                    }
                    if (jMeterVariables.get(item) != null) {
                        vs.put(item, jMeterVariables.get(item));
                    } else {
                        vs.put(item, vars.get(item) == null ? "" : vars.get(item));
                    }
                }
                vs.remove("TESTSTART.MS"); // 标示变量移除
            }
        }

        variables.put(testId, vs);
    }

    /**
     * 处理所有请求，有提取变量的请求增加后置脚本提取变量值
     *
     * @param tree
     */
    public static void addJSR223PostProcessor(HashTree tree) {
        for (Object key : tree.keySet()) {
            HashTree node = tree.get(key);
            if (key instanceof HTTPSamplerProxy || key instanceof DubboSample || key instanceof JDBCSampler) {
                StringJoiner extract = new StringJoiner(";");
                for (Object child : node.keySet()) {
                    if (child instanceof RegexExtractor) {
                        RegexExtractor regexExtractor = (RegexExtractor) child;
                        extract.add(regexExtractor.getRefName());
                    } else if (child instanceof XPath2Extractor) {
                        XPath2Extractor regexExtractor = (XPath2Extractor) child;
                        extract.add(regexExtractor.getRefName());
                    } else if (child instanceof JSONPostProcessor) {
                        JSONPostProcessor regexExtractor = (JSONPostProcessor) child;
                        extract.add(regexExtractor.getRefNames());
                    }
                }

                if (Optional.ofNullable(extract).orElse(extract).length() > 0) {
                    JSR223PostProcessor shell = new JSR223PostProcessor();
                    shell.setEnabled(true);
                    shell.setProperty("script", "io.metersphere.utils.JMeterVars.addVars(prev.hashCode(),vars," + "\"" + extract.toString() + "\"" + ");");
                    node.add(shell);
                }
            }

            if (node != null) {
                addJSR223PostProcessor(node);
            }
        }
    }

    public static JMeterVariables get(String key) {
        return variables.get(key);
    }

    public static void remove(String key) {
        variables.remove(key);
    }

}
 















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