Question

我在lambda触发器中移动亚马逊s3上的文件时遇到了一些问题。我可以做s3.getObject，但我认为我的问题是我在做s3.putObject

var srcBucket = event.Records[0].s3.bucket.name;
var srcKey = decodeURIComponent(event.Records[0].s3.object.key.replace(/\+/g, " "));
var s3params = {Bucket: srcBucket, Key: srcKey};

s3.getObject(s3params, function(err, data) {
    if (err) console.log(err, err.stack); // an error occurred
    else     console.log("Loaded " + data.ContentLength + " bytes"); // successful response

    var destinationpath = destinationbucket + '/moved_files/';
    console.log("Destination: " +destinationpath);

    var destiniation_name = destinationpath + str.split("/")[3];
    console.log(destiniation_name);
    var upparams = {Bucket: destinationbucket, Key: destiniation_name,ContentType: data.ContentType, Body: data.Stream};
    s3.putObject(upparams,function(err, data) {
        if (err) console.log(err, err.stack); // an error occurred
        else     console.log("upload response " +data); // successful response
        context.succeed('exit');
    });
});

Answer 1

如果您只是在存储桶之间移动文件，则可以使用S3.copyObject：

var params = {
  CopySource: srcBucket + '/' + srcKey,
  Bucket: dstBucket,
  Key: dstKey
};

s3.copyObject(params, function(err, data) {
  if (err) console.log(err, err.stack); // an error occurred
  else     console.log(data);           // successful response
});

这将在S3内部“移动”文件，这将比下载和上传文件更快。此外，您只需支付PUT请求，无需进行数据传输。

在相同的亚马逊帐户上的桶之间移动文件

1 个答案: