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Stream video with GridFSBucketAdapter (implements byte-range requests) (#6028)

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* Stream video with GridFSBucketAdapter (implements byte-range requests)

Closes: https://github.com/parse-community/parse-server/issues/5834

Similar to https://github.com/parse-community/parse-server/pull/2437

I ran into this issue while trying to view a mov file in safari from the dashboard.

* Rename getFileStream to handleFileStream
This commit is contained in:
Diamond Lewis
2019-09-11 09:34:39 -05:00
committed by GitHub
parent 84776810b8
commit 63cabb8423
4 changed files with 111 additions and 87 deletions
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39
src/Adapters/Files/GridFSBucketAdapter.js
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@@ -59,7 +59,7 @@ export class GridFSBucketAdapter extends FilesAdapter {
async deleteFile(filename: string) {
const bucket = await this._getBucket();
const documents = await bucket.find({ filename: filename }).toArray();
const documents = await bucket.find({ filename }).toArray();
if (documents.length === 0) {
throw new Error('FileNotFound');
}
@@ -71,7 +71,8 @@ export class GridFSBucketAdapter extends FilesAdapter {
}
async getFileData(filename: string) {
const stream = await this.getDownloadStream(filename);
const bucket = await this._getBucket();
const stream = bucket.openDownloadStreamByName(filename);
stream.read();
return new Promise((resolve, reject) => {
const chunks = [];
@@ -97,9 +98,39 @@ export class GridFSBucketAdapter extends FilesAdapter {
);
}
async getDownloadStream(filename: string) {
async handleFileStream(filename: string, req, res, contentType) {
const bucket = await this._getBucket();
return bucket.openDownloadStreamByName(filename);
const files = await bucket.find({ filename }).toArray();
if (files.length === 0) {
throw new Error('FileNotFound');
}
const parts = req
.get('Range')
.replace(/bytes=/, '')
.split('-');
const partialstart = parts[0];
const partialend = parts[1];
const start = parseInt(partialstart, 10);
const end = partialend ? parseInt(partialend, 10) : files[0].length - 1;
res.writeHead(206, {
'Accept-Ranges': 'bytes',
'Content-Length': end - start + 1,
'Content-Range': 'bytes ' + start + '-' + end + '/' + files[0].length,
'Content-Type': contentType,
});
const stream = bucket.openDownloadStreamByName(filename);
stream.start(start);
stream.on('data', chunk => {
res.write(chunk);
});
stream.on('error', () => {
res.sendStatus(404);
});
stream.on('end', () => {
res.end();
});
}
handleShutdown() {