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构建编译MPaaSAARHookerTask

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分析

1.build.gradle

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classpath 'com.android.boost.easyconfig:easyconfig:2.2.10'

2.easyconfig-2.2.10.pom

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<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.android.boost.easyconfig</groupId>
  <artifactId>easyconfig</artifactId>
  <version>2.2.10</version>
  <dependencies>
    <dependency>
      <groupId>com.android.boost.dependency</groupId>
      <artifactId>gradle_plugin</artifactId>
      <version>3.4.11</version>
      <scope>compile</scope>
      <exclusions>
        <exclusion>
          <artifactId>commons-io</artifactId>
          <groupId>commons-io</groupId>
        </exclusion>
        <exclusion>
          <artifactId>guava</artifactId>
          <groupId>com.google.guava</groupId>
        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>19.0</version>
      <scope>compile</scope>
    </dependency>
  </dependencies>
</project>

3.gradle_plugin-3.4.11.jar
image.png
image.png

4.amap_android/scm/miniapp/ariver.gradle

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apply plugin: 'com.alipay.apollo.baseline.config'

5.portal task依赖中正好也看到了有MPaaSAARHookerTask
image.png

寻找这个task的思路？

反推法，从第五步开始，我们看到了MPaaSAARHookerTask，如果想知道这个task做了什么，我们应该从项目所有的classpath依赖中去查找，通过简单的分析’paas’，’easy’，’config’ ，再通过所有打印出的所有classpath，估计应该在com.android.boost.easyconfig:easyconfig:2.2.10这个库中，但是打开这个库之后，并没有发现有MPaaSAARHookerTask这个类，于是又在pom文件发现easyconfig依赖gradle_plugin，最终在gradle_plugin中找到了这个Task

task：https://yuque.antfin.com/xiaobao.spf/ad2gcp/rvlk3e
classpath: https://yuque.antfin.com/xiaobao.spf/ad2gcp/yizp1w

解析

DSL语法转化为class，反编译后的代码，阅读上比较费劲

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public Object handleAARConfig(Project project, BaseVariant variant) {
        CallSite[] $getCallSiteArray = $getCallSiteArray();
        if (!BytecodeInterface8.isOrigZ() || __$stMC || BytecodeInterface8.disabledStandardMetaClass()) {
            if (ScriptBytecodeAdapter.compareEqual(project, null) || ScriptBytecodeAdapter.compareEqual(variant, null)) {
                return null;
            }
        } else {
            if (ScriptBytecodeAdapter.compareEqual(project, null) || ScriptBytecodeAdapter.compareEqual(variant, null)) {
                return null;
            }
        }
        Object applicationId = $getCallSiteArray[72].callGetProperty(variant);
        Object packageName = $getCallSiteArray[73].callStatic(MPaaSAARPlugin.class, variant);
        File outputDir = (File) ScriptBytecodeAdapter.castToType($getCallSiteArray[74].call(project, new GStringImpl(new Object[]{$getCallSiteArray[75].callGetProperty(project), $getCallSiteArray[76].callGetProperty(variant)}, new String[]{"", "/generated/source/aar_hook/", ""})), File.class);
        MPaaSAARHookerTask task = (MPaaSAARHookerTask) ScriptBytecodeAdapter.castToType($getCallSiteArray[77].call($getCallSiteArray[78].callGetProperty(project), new GStringImpl(new Object[]{$getCallSiteArray[79].call($getCallSiteArray[80].callGetProperty(variant))}, new String[]{"mpaas", "AARHookerTask"}), MPaaSAARHookerTask.class), MPaaSAARHookerTask.class);
        $getCallSiteArray[81].call(task, applicationId);
        $getCallSiteArray[82].call(task, packageName);
        $getCallSiteArray[83].call(task, $getCallSiteArray[84].callGetProperty(outputDir));
        return $getCallSiteArray[85].call(variant, task, outputDir);
    }

先找到了MPaaSAARHookerTask，然后查看handleAARConfig的调用，在strArr[70]数组中发现了这个方法

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strArr[70] = "handleAARConfig";

public Object handleVariant(Project project, Object variant) {
        CallSite[] $getCallSiteArray = $getCallSiteArray();
        $getCallSiteArray[70].callCurrent(this, project, variant);
        return $getCallSiteArray[71].callCurrent(this, variant, project);
    }

继续查找发现handleVariant中又调用了handleAARConfig，再往上查看就是Plugin的apply中了，这里忽略，进行分析MPaaSAARHookerTask，handleAARConfig方法中有很多的getCallSiteArray数组，数组索引为72-85

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strArr[71] = "handleMpaasConfig";
      strArr[72] = "applicationId";
      strArr[73] = "getPackageName";
      strArr[74] = "file";
      strArr[75] = "buildDir";
      strArr[76] = "dirName";
      strArr[77] = "create";
      strArr[78] = "tasks";
      strArr[79] = "capitalize";
      strArr[80] = "name";
      strArr[81] = "setApplicationId";
      strArr[82] = "setPackageName";
      strArr[83] = "setOutputFilePath";
      strArr[84] = "absolutePath";
      strArr[85] = "registerJavaGeneratingTask";
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open fun registerJavaGeneratingTask(
        task: Task,
        generatedSourceFolders: Collection<File>
    ) {
        @Suppress("DEPRECATION")
        taskContainer.sourceGenTask.dependsOn(task) // 重点

        val fileTrees = extraGeneratedSourceFileTrees ?: mutableListOf<ConfigurableFileTree>().also {
            extraGeneratedSourceFileTrees = it
        }

        for (f in generatedSourceFolders) {
            val fileTree = services.fileTree(f).builtBy(task)
            fileTrees.add(fileTree)
        }
        addJavaSourceFoldersToModel(generatedSourceFolders)
    }

分析registerJavaGeneratingTask，得出在generatorVariantNameSourcesTask会依赖MPaaSAARHookerTask

MPaaSAARHookerTask

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@TaskAction
    public void executeTask() {
        try {
            new HookerJavaGenerator().generate(this.outputFilePath, this.packageName);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

HookerJavaGenerator

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public class HookerJavaGenerator {
    private static final String TAG = HookerJavaGenerator.class.getName();
    private final String className = "FinalRInit";
    private final String packageName = "com.mpaas.project.aar.convert.converter";

    public static void main(String[] args) throws IOException {
        new HookerJavaGenerator().generate("/Users/gezihua/mpaas_code/dependcychecker/java-demo/src/main/java", "com.alipay.iap.android.webapp");
    }

    public void generate(String outFilePath, String RJavaPackage) throws IOException {
        if (StringUtils.isEmpty(outFilePath)) {
            System.err.println(TAG + "generate outFilePath is null");
        } else if (StringUtils.isEmpty(RJavaPackage)) {
            System.err.println(TAG + "generate RJavaPackage is null");
        } else {
            File outFile = Paths.get(outFilePath, "com.mpaas.project.aar.convert.converter".replaceAll("\\.", "/") + "/FinalRInit.java").toFile();
            if (!outFile.getParentFile().exists()) {
                outFile.getParentFile().mkdirs();
            }
            if (!outFile.exists()) {
                outFile.createNewFile();
            }
            System.out.println(outFile.getAbsolutePath());
            new JavaWriter(new OutputStreamWriter(new FileOutputStream(outFile))).emitPackage("com.mpaas.project.aar.convert.converter").beginType("com.mpaas.project.aar.convert.converter.FinalRInit", "class", EnumSet.of(Modifier.PUBLIC, Modifier.FINAL)).emitJavadoc("com.mpaas.project.aar.convert init with your R class", new Object[0]).beginMethod("Class", "getRClass", EnumSet.of(Modifier.PUBLIC, Modifier.STATIC), new String[0]).emitStatement(String.format("return %s.R.class", RJavaPackage), new Object[0]).endMethod().endType().close();
        }
    }
}

通过分析，得知MPaaSAARHookerTask 主要是用于生成一个FinalRInit.java

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public final class FinalRInit {
  /**
   * com.mpaas.project.aar.convert init with your R class
   */
  public static Class getRClass() {
    return com.autonavi.minimap.R.class;
  }
}

调用

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public class FinalR {
    ...

    public static Class invokeFinalRInit() {
        try {
            return (Class) Class.forName("com.mpaas.project.aar.convert.converter.FinalRInit").getMethod("getRClass", new Class[0]).invoke(null, new Object[0]);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

  	...
    public static int invokeRInnerClassIntWithOutException(String className, String valueName) {
        try {
            return invokeRInnerClassInt(className, valueName);
        } catch (Exception e) {
            e.printStackTrace();
            return -1;
        }
    }

  	...
}
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package com.alibaba.ailabs.tg.sdk.test;

import com.alipay.mobile.common.share.widget.ResUtils;
import com.alipay.mobile.nebulax.resource.storage.dbbean.AromeRecentAppBean;
import com.mpaas.project.aar.convert.converter.FinalR;

public final class R {

    public static final class drawable {
        public static final int aomp_bg_indicator_default = FinalR.invokeRInnerClassIntWithOutException(ResUtils.DRAWABLE, "aomp_bg_indicator_default");
        public static final int aomp_bg_indicator_selected = FinalR.invokeRInnerClassIntWithOutException(ResUtils.DRAWABLE, "aomp_bg_indicator_selected");
        public static final int aomp_bg_indicator_selector = FinalR.invokeRInnerClassIntWithOutException(ResUtils.DRAWABLE, "aomp_bg_indicator_selector");
        public static final int aomp_btn_bg_cancel = FinalR.invokeRInnerClassIntWithOutException(ResUtils.DRAWABLE, "aomp_btn_bg_cancel");
        public static final int aomp_dialog_bg_auth = FinalR.invokeRInnerClassIntWithOutException(ResUtils.DRAWABLE, "aomp_dialog_bg_auth");
        public static final int aomp_ic_auth_fail = FinalR.invokeRInnerClassIntWithOutException(ResUtils.DRAWABLE, "aomp_ic_auth_fail");
        public static final int aomp_ic_auth_success = FinalR.invokeRInnerClassIntWithOutException(ResUtils.DRAWABLE, "aomp_ic_auth_success");
    }

    ...
}

最终发现是在子项目的 R文件 中通过反射的方式调用 portal（com.autonavi.minimap.R.class） 中 R文件

子项目中引用R文件的类，类中指定了R.class，而非使用高德中的R，所以指定的R文件中需要建立映射到高德中的R文件。