入口是MethodTracer的trace方法
public void trace(Map<File, File> srcFolderList, Map<File, File> dependencyJarList) {
traceMethodFromSrc(srcFolderList);
traceMethodFromJar(dependencyJarList);
}
复制代码
分别对目录、jar包插桩
private void innerTraceMethodFromSrc(File input, File output) {
...
if (mTraceConfig.isNeedTraceClass(classFile.getName())) {
is = new FileInputStream(classFile);
ClassReader classReader = new ClassReader(is);
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);
ClassVisitor classVisitor = new TraceClassAdapter(Opcodes.ASM5, classWriter);
classReader.accept(classVisitor, ClassReader.EXPAND_FRAMES);
...
}
private void innerTraceMethodFromJar(File input, File output) {
...
if (mTraceConfig.isNeedTraceClass(zipEntryName)) {
InputStream inputStream = zipFile.getInputStream(zipEntry);
ClassReader classReader = new ClassReader(inputStream);
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);
ClassVisitor classVisitor = new TraceClassAdapter(Opcodes.ASM5, classWriter);
classReader.accept(classVisitor, ClassReader.EXPAND_FRAMES);
byte[] data = classWriter.toByteArray();
InputStream byteArrayInputStream = new ByteArrayInputStream(data);
ZipEntry newZipEntry = new ZipEntry(zipEntryName);
FileUtil.addZipEntry(zipOutputStream, newZipEntry, byteArrayInputStream);
...