截断对象(Harmony SDK)

// 引入依赖包
import ObsClient, { TruncateObjectInput } from '@obs/esdk-obs-harmony';

// 创建ObsClient实例
const obsClient = new ObsClient({
  // 推荐通过环境变量获取AKSK，这里也可以使用其他外部引入方式传入，如果使用硬编码可能会存在泄露风险
  // 您可以登录访问管理控制台获取访问密钥AK/SK，获取方式请参见https://support.huaweicloud.com/usermanual-ca/ca_01_0003.html
  AccessKeyId: process.env.ACCESS_KEY_ID,
  SecretAccessKey: process.env.SECRET_ACCESS_KEY,
  // 【可选】如果使用临时AK/SK和SecurityToken访问OBS，同样建议您尽量避免使用硬编码，以降低信息泄露风险。您可以通过环境变量获取访问密钥AK/SK，也可以使用其他外部引入方式传入
  // SecurityToken: process.env.SECURITY_TOKEN,
  // Server填写Bucket对应的Endpoint, 这里以华北-北京四为例，其他地区请按实际情况填写
  Server: "https://obs.cn-north-4.myhuaweicloud.com",
});

async function truncateObject() {
  try {
    const params: TruncateObjectInput = {
      // 指定并行文件系统名称
      Bucket: "examplebucket",
      // 指定对象，此处以 example/objectname 为例
      Key: "example/objectname",
      // 指定截断后对象的大小
      Length: 1024
    };
    // 截断对象
    const result = await obsClient.truncateObject(params);
    if (result.CommonMsg.Status <= 300) {
      console.log("Truncate object(%s) under the bucket(%s) successful!", params.Key, params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      return;
    }
    console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
    console.log("Status: %d", result.CommonMsg.Status);
    console.log("Code: %s", result.CommonMsg.Code);
    console.log("Message: %s", result.CommonMsg.Message);
    console.log("RequestId: %s", result.CommonMsg.RequestId);
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  }
}

truncateObject();