36 lines
1 KiB
JavaScript
36 lines
1 KiB
JavaScript
import fs from 'fs';
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import path from 'path';
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import createError from 'http-errors';
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import { get as getFile } from './s3';
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import debugname from 'debug';
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const debug = debugname('hostr:file-stream');
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export default function* hostrFileStream(localPath, remotePath) {
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const localRead = fs.createReadStream(localPath);
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return new Promise((resolve, reject) => {
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localRead.once('error', () => {
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debug('local error');
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const remoteRead = getFile(remotePath);
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remoteRead.once('readable', () => {
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debug('remote readable');
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const localWrite = fs.createWriteStream(localPath);
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localWrite.once('finish', () => {
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debug('local write end');
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resolve(fs.createReadStream(localPath));
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});
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remoteRead.pipe(localWrite);
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});
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remoteRead.once('error', () => {
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debug('remote error');
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reject(createError(404));
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});
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});
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localRead.once('readable', () => {
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debug('local readable');
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resolve(localRead);
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});
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});
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}
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