我正在尝试通过ec2将文件上传到s3。 我的第一个方法是 - 将文件完全上传到ec2,然后将该文件上传到s3。这种方法并不好,因为从ec2到s3的转移时间是浪费时间。
目前我正在尝试使用 busboy上传流到 s3上传流,以便上传到ec2,然后再上传到ec3到s3,因为s3 上传“方法支持流作为上传正文。
这是我的代码 -
router.post('/s3StreamUpload', function(req, res, next) {
var busboy = new Busboy({headers: req.headers});
busboy.on('file', function (fieldname, file, filename, encoding, mimetype) {
console.log('Before Upload: ' + new Date());
console.log('File [' + fieldname + ']: filename: ' + filename + ', encoding: ' + encoding + ', mimetype: ' + mimetype);
var s3 = new AWS.S3({
params: {Bucket: 'sswa', Key: filename, Body: file},
options: {partSize: 5 * 1024 * 1024, queueSize: 10} // 5 MB
});
s3.upload().on('httpUploadProgress', function (evt) {
console.log(evt);
}).send(function (err, data) {
console.log('After Upload: ' + new Date());
console.log(err, data);
});
});
busboy.on('field', function(fieldname, val, fieldnameTruncated, valTruncated, encoding, mimetype) {
console.log('Field [' + fieldname + ']: value: ' + inspect(val));
});
busboy.on('finish', function() {
console.log('Done parsing form!');
res.writeHead(303, { Connection: 'close', Location: '/' });
res.end();
});
req.pipe(busboy);
});
我怀疑它是否真的像流一样上传到s3?这种方法有什么缺点吗?
答案 0 :(得分:1)
为了测试上传到S3的多部分流式传输是否有效,我花时间记录了三个执行点 -
然后我从EC2开始。在上传了各种长度的视频文件(36.1 MB,33.3 MB,52.5 MB)后,我观察到,每上传到EC2的5MB(如我所定义),部件立即转移到S3。将零件上传到S3时,您将看到以下行的日志。它将显示文件部件上传进度和部件号。
console.log(evt);
对于所有三个上传 busboyFinishTime 和 s3UploadFinishTime 相同或几乎没有1秒的差异。
实施例: 当52.5 MB上传时
{
"uploadStartTime": "2016-04-28T14:19:51.365Z",
"busboyFinishTime": "2016-04-28T14:22:26.292Z",
"s3UploadFinishTime": "2016-04-28T14:22:26.558Z"
}
完整代码:
router.post('/s3StreamUpload', function(req, res, next) {
var busboy = new Busboy({headers: req.headers});
var uploadStartTime = new Date(),
busboyFinishTime = null,
s3UploadFinishTime = null;
busboy.on('file', function (fieldname, file, filename, encoding, mimetype) {
console.log('File [' + fieldname + ']: filename: ' + filename + ', encoding: ' + encoding + ', mimetype: ' + mimetype);
var s3 = new AWS.S3({
params: {Bucket: 'sswa', Key: filename, Body: file},
options: {partSize: 5 * 1024 * 1024, queueSize: 10} // 5 MB
});
s3.upload().on('httpUploadProgress', function (evt) {
console.log(evt);
}).send(function (err, data) {
s3UploadFinishTime = new Date();
if(busboyFinishTime && s3UploadFinishTime) {
res.json({
uploadStartTime: uploadStartTime,
busboyFinishTime: busboyFinishTime,
s3UploadFinishTime: s3UploadFinishTime
});
}
console.log(err, data);
});
});
busboy.on('field', function(fieldname, val, fieldnameTruncated, valTruncated, encoding, mimetype) {
console.log('Field [' + fieldname + ']: value: ' + inspect(val));
});
busboy.on('finish', function() {
console.log('Done parsing form!');
busboyFinishTime = new Date();
if(busboyFinishTime && s3UploadFinishTime) {
res.json({
uploadStartTime: uploadStartTime,
busboyFinishTime: busboyFinishTime,
s3UploadFinishTime: s3UploadFinishTime
});
}
});
req.pipe(busboy);
});
根据我的观察,我确信这是使用部署在EC2上的REST API通过EC2将文件上传到S3的最佳解决方案之一。
答案 1 :(得分:0)
您是否尝试直接从浏览器上传到S3?如果是这样,您可以使用presigned-put直接浏览到S3上传。
这是使用minio-js
生成预先签名的PUT网址的方法s3Client.presignedPutObject('my-bucketname', 'my-objectname', 1000, function(e, presignedUrl) {
if (e) return console.log(e)
console.log(presignedUrl)
})
现在您将此预签名URL传递给浏览器客户端,该客户端可以使用XMLHttpRequest将文件直接输入S3。