node.js - aws-sdk S3 : best way to list all keys with listObjectsV2

Question

使用 listObjects API 调用的 v1 版本，您可以从 SO answer 中完成类似的操作.

var allKeys = [];
function listAllKeys(marker, cb) {
  s3.listObjects({Bucket: s3bucket, Marker: marker}, function(err, data){
     allKeys.push(data.Contents);

    if(data.IsTruncated)
       listAllKeys(data.NextMarker, cb);
    else
       cb();
  });
}

listObjectsV2 函数的等效项是什么？

Answer 1

我认为这是最好的方法:

const AWS = require('aws-sdk');
const s3 = new AWS.S3();

const listAllKeys = (params, out = []) => new Promise((resolve, reject) => {
  s3.listObjectsV2(params).promise()
    .then(({Contents, IsTruncated, NextContinuationToken}) => {
      out.push(...Contents);
      !IsTruncated ? resolve(out) : resolve(listAllKeys(Object.assign(params, {ContinuationToken: NextContinuationToken}), out));
    })
    .catch(reject);
});

listAllKeys({Bucket: 'bucket-name'})
  .then(console.log)
  .catch(console.log);