50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
// for Node.js interpret
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const { default: db } = require('../../built/db/mongodb')
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const { default: DriveFile, getGridFSBucket } = require('../../built/api/models/drive-file')
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const { Duplex } = require('stream')
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const writeToGridFS = (bucket, buffer, ...rest) => new Promise((resolve, reject) => {
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const writeStream = bucket.openUploadStreamWithId(...rest)
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const dataStream = new Duplex()
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dataStream.push(buffer)
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dataStream.push(null)
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writeStream.once('finish', resolve)
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writeStream.on('error', reject)
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dataStream.pipe(writeStream)
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})
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const migrateToGridFS = async (doc) => {
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const id = doc._id
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const buffer = doc.data.buffer
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const created_at = doc.created_at
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delete doc._id
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delete doc.created_at
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delete doc.datasize
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delete doc.hash
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delete doc.data
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const bucket = await getGridFSBucket()
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const added = await writeToGridFS(bucket, buffer, id, `${id}/${doc.name}`, { metadata: doc })
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const result = await DriveFile.update(id, {
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$set: {
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uploadDate: created_at
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}
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})
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return added && result.ok === 1
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}
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const main = async () => {
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const docs = await db.get('drive_files').find()
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const all = await Promise.all(docs.map(migrateToGridFS))
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return all
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}
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main().then(console.dir).catch(console.error)
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