HarmonyOS 开发实践——基于AOP的代码插桩

function addTimePrinter(targetClass: Object, methodName: string, isStatic: boolean) {
  let count: number = 0
  let t1 = 0;
  let t2 = 0;
  util.Aspect.addBefore(targetClass, methodName, isStatic, () => {
    t1 = new Date().getTime();
  })
  util.Aspect.addAfter(targetClass, methodName, isStatic, (instance: Object, ret: number) => {
 
    count+=1
    t2 = new Date().getTime();
    console.log(methodName+"方法耗时为t2 - t1 = " + (t2 - t1).toString());
    console.log(methodName+"方法调用次数为count = " + count);
    return ret;
  })
}
 
function doSomeWork(time: number) {
  let start = Date.now()
  while (Date.now()-start<time class=""></time>

import { BusinessError } from '@kit.BasicServicesKit';
import { GlobalThis} from '../utils/GlobalThis'
import util from '@ohos.util';
 
let context  = GlobalThis.getInstance().getContext("context")
 
export function Jump(){
  let want: Want = {
    bundleName: 'com.example.myapplication_taskpool_settime',
    abilityName: 'EntryAbility'
  };
  try {
    context?.startAbility(want, (err: BusinessError) => {
      if (err.code) {
        // 处理业务逻辑错误
        console.error(`testtag startAbility failed, code is ${err.code}, message is ${err.message}`);
        return;
      }
      // 执行正常业务
      console.info('testtag startAbility succeed');
    });
  } catch (err) {
    // 处理入参错误异常
    let code = (err as BusinessError).code;
    let message = (err as BusinessError).message;
    console.error(`testtag  startAbility failed, code is ${code}, message is ${message}`);
    console.error(`testtag  startAbility failed, code is ${code}, message is ${message}`);
  }
}
 
util.Aspect.addAfter(context?.constructor, "startAbility", false, (instance: Object, ret: Object, want: Want): void => {
    console.error("testtag 获取目标包名"+want?.bundleName);
  }
);

//获取来源包名
util.Aspect.addBefore(EntryAbility, "onCreate", false, (instance: EntryAbility, want: Want): void => {
  let params = want.parameters as Record;
  console.error('testtag 获取来源包名'+params['ohos.aafwk.param.callerBundleName']);
});