Question

首先，我试图将文件复制到其他文件夹中，但无法将其删除。仅当文件复制到目标文件夹后，才能删除文件。

    const s3Params = {
        Bucket: bucket,
        CopySource: bucket + '/' + objectkey,
        Key: 'processed-data/' + objectkey
    };

    function copyFile() {
        s3.copyObject(s3Params, function (err, data) {
            if (err) {
                console.log(err);
            }
            else {
                deleteFile();
            }
        });
    }

    function deleteFile() {
        s3.deleteObject(s3Params, function (err, data) {
            if (err) {
                console.log(err, err.stack);
                logs.push(err, err.stack);
            }
            else {
                console.log("File moved successfully");
                log.push("File moved successfully");
            }
        });    
    }

Answer 1

由于尚未共享完整代码，我们创建了以下lambda函数示例，该示例将特定文件从源文件夹复制到目标文件夹，然后从源文件夹删除该文件。据我所知，您的lambda似乎缺少一些参数和某些承诺。

代码段：

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

const bucketName = 'Bucket Name'
const sourceFolder = 'Source Folder'
const fileName = 'File Name with extention'
const destFolder = 'Destination Folder'


const s3Params = {
        Bucket: bucketName,
        CopySource: `${bucketName}/${sourceFolder}/${fileName}`,
        Key: `${destFolder}/${fileName}`
    };

function copyFile() {
  return s3.copyObject(s3Params).promise();
    }


function deleteFile() {
     return s3.deleteObject({  Bucket: bucketName, Key: `${sourceFolder}/${fileName}` }).promise();
}


exports.handler = async (event, context, callback) => {

try{
  await copyFile().then(r => deleteFile());
  console.log('All good')
}
catch(ex){ console.log(`Failed with the following exception : ${ex}`)

}


};

Answer 2

尝试在参数中添加Delete键，然后将文件的键添加到该列表中。然后s3.deleteObjects将删除该文件。
我已经重新格式化了您的代码。试试看。

    const s3Params = {
        Bucket: bucket,
        CopySource: bucket + '/' + objectkey,
        Key: 'processed-data/' + objectkey,
        Delete: { Objects: [] }
    };

    function copyFile() {
        s3.copyObject(s3Params, function (err, data) {
            if (err) {
                console.log(err);
            }
            else {
                s3Params.Delete.Objects.push({Key: s3Params.Key});
                deleteFile();
            }
        });
    }

    function deleteFile() {
        s3.deleteObjects(s3Params, function (err, data) {
            if (err) {
                console.log(err, err.stack);
                logs.push(err, err.stack);
            }
            else {
                console.log("File moved successfully");
                log.push("File moved successfully");
            }
        });    
    }

在s3中将文件从一个文件夹移动到另一个文件夹

2 个答案: