How to copy the object from s3 to s3 using node.js

Question

I would like to know how to copy the object from s3 to s3 using node.js With the aws s3 command, It could be executed as follows.

s3 cp --recursive s3://xx/yy  s3://zz/aa

http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/S3.html#copyObject-property

I refer to above link,But I don't know how to do it using node.js

any Idea?

Answer 1

If you just want to copy one object copyObject API.

 var params = {
  Bucket: "destinationbucket", 
  CopySource: "/sourcebucket/sourceKeyName", 
  Key: "targetKeyName"
 };
 s3.copyObject(params, function(err, data) {
   if (err) console.log(err, err.stack); // an error occurred
   else     console.log(data);           // successful response
 });

If you want to perform recursively for all objects in a bucket, then

1. List all the object keys in a bucket using the listObjectsV2 API.

2. If versioning is enabled in the source-bucket and you want to copy a specific version of the key, Invoke the listObjectVersions API as well and get the Version-Id for each S3 Key.

   NOTE: If versioning is not enabled, then you can ignore STEP-2.

3. Call copyObject for each S3 Key and the Version-Id obtained in Step-1 and Step-2 respectively. Version-id is optional.

Answer 2

If you want to really move (so not just copy, but in addition remove the source file)

const moveAndDeleteFile = async (file,inputfolder,targetfolder) => {
    const s3 = new AWS.S3();

    const copyparams = {
        Bucket : bucketname,
        CopySource : bucketname + "/" + inputfolder + "/" + file, 
        Key : targetfolder + "/" + file
    };

    await s3.copyObject(copyparams).promise();

    const deleteparams = {
        Bucket : bucketname,
        Key : inputfolder + "/" + file
    };

    await s3.deleteObject(deleteparams).promise();
    ....
}