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Nodejs Firebase Storage Sample
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const express = require('express'); | |
const app = express(); | |
const googleStorage = require('@google-cloud/storage'); | |
const Multer = require('multer'); | |
const storage = googleStorage({ | |
projectId: "<Firebase Project ID", | |
keyFilename: "<path to service accounts prviate key JSON>" | |
}); | |
const bucket = storage.bucket("<Firebase Storage Bucket URL"); | |
const multer = Multer({ | |
storage: Multer.memoryStorage(), | |
limits: { | |
fileSize: 5 * 1024 * 1024 // no larger than 5mb, you can change as needed. | |
} | |
}); | |
app.listen(3000, () => { | |
console.log('App listening to port 3000'); | |
}); | |
/** | |
* Adding new file to the storage | |
*/ | |
app.post('/upload', multer.single('file'), (req, res) => { | |
console.log('Upload Image'); | |
let file = req.file; | |
if (file) { | |
uploadImageToStorage(file).then((success) => { | |
res.status(200).send({ | |
status: 'success' | |
}); | |
}).catch((error) => { | |
console.error(error); | |
}); | |
} | |
}); | |
/** | |
* Upload the image file to Google Storage | |
* @param {File} file object that will be uploaded to Google Storage | |
*/ | |
const uploadImageToStorage = (file) => { | |
return new Promise((resolve, reject) => { | |
if (!file) { | |
reject('No image file'); | |
} | |
let newFileName = `${file.originalname}_${Date.now()}`; | |
let fileUpload = bucket.file(newFileName); | |
const blobStream = fileUpload.createWriteStream({ | |
metadata: { | |
contentType: file.mimetype | |
} | |
}); | |
blobStream.on('error', (error) => { | |
reject('Something is wrong! Unable to upload at the moment.'); | |
}); | |
blobStream.on('finish', () => { | |
// The public URL can be used to directly access the file via HTTP. | |
const url = format(`https://storage.googleapis.com/${bucket.name}/${fileUpload.name}`); | |
resolve(url); | |
}); | |
blobStream.end(file.buffer); | |
}); | |
} |
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You may modify the url value to something like this for an expirable public url
const url = fileUpload.getSignedUrl({ action: "read", expires: "02-02-2025", });