101 lines
2.6 KiB
JavaScript
101 lines
2.6 KiB
JavaScript
import uuid from 'node-uuid';
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import policy from 's3-policy';
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import s3 from 's3';
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const client = s3.createClient({
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maxAsyncS3: 20,
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s3RetryCount: 3,
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s3RetryDelay: 1000,
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multipartUploadThreshold: 20971520, // this is the default (20 MB)
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multipartUploadSize: 15728640, // this is the default (15 MB)
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s3Options: {
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accessKeyId: `${process.env.AWS_ACCESS_KEY}`,
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secretAccessKey: `${process.env.AWS_SECRET_KEY}`,
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region: `${process.env.AWS_REGION}`
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},
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});
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const s3Bucket = `https://s3-${process.env.AWS_REGION}.amazonaws.com/${process.env.S3_BUCKET}/`;
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function getExtension(filename) {
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const i = filename.lastIndexOf('.');
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return (i < 0) ? '' : filename.substr(i);
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}
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export function getObjectKey(url) {
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const urlArray = url.split('/');
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let objectKey;
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if (urlArray.length === 6) {
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const key = urlArray.pop();
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const userId = urlArray.pop();
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objectKey = `${userId}/${key}`
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} else {
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const key = urlArray.pop();
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objectKey = key;
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}
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return objectKey;
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}
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export function deleteObjectsFromS3(keyList, callback) {
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const keys = keyList.map((key) => { return { Key: key }; }); // eslint-disable-line
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if (keyList.length > 0) {
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const params = {
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Bucket: `${process.env.S3_BUCKET}`,
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Delete: {
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Objects: keys,
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},
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};
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const del = client.deleteObjects(params);
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del.on('end', () => {
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if (callback) {
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callback();
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}
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});
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} else if (callback) {
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callback();
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}
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}
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export function deleteObjectFromS3(req, res) {
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const objectKey = req.params.object_key;
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deleteObjectsFromS3([objectKey], () => {
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res.json({ success: true });
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});
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}
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export function signS3(req, res) {
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const fileExtension = getExtension(req.body.name);
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const filename = uuid.v4() + fileExtension;
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const acl = 'public-read';
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const p = policy({
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acl,
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secret: process.env.AWS_SECRET_KEY,
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length: 5000000, // in bytes?
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bucket: process.env.S3_BUCKET,
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key: filename,
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expires: new Date(Date.now() + 60000),
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});
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const result = {
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AWSAccessKeyId: process.env.AWS_ACCESS_KEY,
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key: `${req.body.userId}/${filename}`,
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policy: p.policy,
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signature: p.signature
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};
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return res.json(result);
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}
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export function copyObjectInS3(req, res) {
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const url = req.body.url;
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const objectKey = getObjectKey(url);
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const fileExtension = getExtension(objectKey);
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const newFilename = uuid.v4() + fileExtension;
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const params = {
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Bucket: `${process.env.S3_BUCKET}`,
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CopySource: `${process.env.S3_BUCKET}/${objectKey}`,
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Key: newFilename
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};
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const copy = client.copyObject(params);
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copy.on('end', () => {
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res.json({ url: `${s3Bucket}${newFilename}` });
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});
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}
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