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第6.2节 Android Agent开发＜三＞

news 2025/9/16 5:42:58

6.2.2 覆盖率文件解析jacoco-parser

由于移动端的特殊性，jacoco插件无法直接在java项目中直接引用，然后解析覆盖率文件。于是就开发了一下android端的工具，打包成jar包来解析覆盖率文件。

1，项目整体情况

早期这个工具只有EC文件解析功能，后来做覆盖率合并的时候，我又添加上了覆盖率数据的去除和添加功能，形成jacoco-parser2.0.jar,针对这个工具的功能，会有另外的文章介绍，此处只介绍覆盖率EC文件的解析。

2，覆盖率文件解析类

通过在项目中添加jacoco插件，然后引用插件的类处理EC文件，根据探针解析出对应的覆盖率数据在文件中的行，再反查对应的函数，输出为json文件。

import com.google.gson.Gson
import org.jacoco.core.analysis.Analyzer
import org.jacoco.core.analysis.CoverageBuilder
import org.jacoco.core.analysis.ICounter
import org.jacoco.core.tools.ExecFileLoader
import java.io.File/********************************************************************************  Read jacoco exec file, java class file, and source file to produce coverage lines.* @author songxianfeng@kuaishou.com*/
data class CoverageInfo(val filename: String,var covered: Set<Int>,var nocovered: Set<Int>
)class JacocoParserOperation {val Covered = setOf(ICounter.FULLY_COVERED, ICounter.PARTLY_COVERED)val NoCovered = setOf(ICounter.NOT_COVERED)fun readJacocoECFileContent(ecFileNames:Array<File>,classesDir:File,sourceDir: Array<File>,output: File){val ecFileLoader = ExecFileLoader()for (file in ecFileNames) {ecFileLoader.load(file)}val coverageBuild = CoverageBuilder()val analyzer = Analyzer(ecFileLoader.executionDataStore, coverageBuild)analyzer.analyzeAll(classesDir)val sourceFileGroup = sourceDir.map {it.walk().filter { file -> file.isFile }.toSet()}.fold(setOf<File>()) { s, e -> s + e}.groupBy { it.name }val bundle = coverageBuild.getBundle("")val coverageMap = mutableMapOf<String, CoverageInfo>()bundle.packages.map { pkg ->//println("${pkg.name} - ${pkg.sourceFiles} - ${pkg.lineCounter}")for (c in pkg.classes) {val sourceFile =sourceFileGroup[c.sourceFileName]?.findLast { f -> f.path.indexOf(c.packageName) > 0 } ?: continuevar coverageInfo = coverageMap[sourceFile.toString()]if (coverageInfo == null) {coverageInfo = CoverageInfo(sourceFile.toString(), setOf(), setOf())}
//                println("class: ${c.name}, source: ${c.sourceFileName}")for (i in c.firstLine..c.lastLine) {if (c.getLine(i).status in Covered) {coverageInfo.covered += i} else if (c.getLine(i).status in NoCovered) {coverageInfo.nocovered += i}}coverageMap[sourceFile.toString()] = coverageInfo}}//        coverageMap.forEach { (k, v) -> println("$k -> $v") }val gson = Gson()val content = gson.toJson(coverageMap)output.writeText(content)}
}

3，工具使用方法

（1）先对项目进行打包

在项目根目录下执行以下命令：

./grwdlew jar

（2）调用工具解析文件

java -jar ./build/libs/jacoco-parser-2.0-SNAPSHOT.jar 
-e /Users/***/first_merged.ec 
-c /Users/****/build_classes_8900 
-s /Users/****/packages 
-o /*****/ecparse.json