Firebase function to delete file from storage when deleting object from database using NodeJS
I am new to NodeJS and I am trying to write the following method for Cloud Functions for Firebase.
What I am trying to achieve:
- The function should run when the user deletes the Photo object from the Firebase database;
- The code should delete the file object from storage corresponding to the Photo object.
This is my Firebase DB structure:
photos / {userUID} / {photoUID}
{
"dateCreated": "2017-07-27T16:40:31.000000Z",
"isProfilePhoto": true,
"isSafe": true,
"uid": "{photoUID}",
"userUID": "{userUID}"
}
And the Firebase storage format:
photos / {userUID} / {photoUID} .png
And the NodeJS code I'm using:
const functions = require('firebase-functions')
const googleCloudStorage = require('@google-cloud/storage')({keyFilename: 'firebase_admin_sdk.json' })
const admin = require('firebase-admin')
const vision = require('@google-cloud/vision')();
admin.initializeApp(functions.config().firebase)
exports.sanitizePhoto = functions.database.ref('photos/{userUID}/{photoUID}')
.onDelete(event => {
let photoUID = event.data.key
let userUID = event.data.ref.parent.key
console.log(`userUID: ${userUID}, photoUID: ${photoUID}`);
if (typeof photoUID === 'undefined' || typeof userUID === 'undefined') {
console.error('Error while sanitize photo, user uid or photo uid are missing');
return
}
console.log(`Deleting photo: ${photoUID}`)
googleCloudStorage.bucket(`photos/${userUID}/${photoUID}.png`).delete().then(() => {
console.log(`Successfully deleted photo with UID: ${photoUID}, userUID : ${userUID}`)
}).catch(err => {
console.log(`Failed to remove photo, error: ${err}`)
});
});
While running it, I get the following error: "ApiError: Not found"
I think this piece of code is the one causing the problem:
googleCloudStorage.bucket(`photos/${userUID}/${photoUID}.png`).delete()
Thanks in advance for your support and patience.
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2 answers
Found the problem, here is the code that works for me:
exports.sanitizePhoto = functions.database.ref('photos/{userUID}/{photoUID}')
.onDelete(event => {
let photoUID = event.data.key
let userUID = event.data.ref.parent.key
console.log(`userUID: ${userUID}, photoUID: ${photoUID}`);
if (typeof photoUID === 'undefined' || typeof userUID === 'undefined') {
console.error('Error while sanitize photo, user uid or photo uid are missing');
return
}
console.log(`Deleting photo: ${photoUID}`)
const filePath = `photos/${userUID}/${photoUID}.png`
const bucket = googleCloudStorage.bucket('myBucket-91823.appspot.com')
const file = bucket.file(filePath)
file.delete().then(() => {
console.log(`Successfully deleted photo with UID: ${photoUID}, userUID : ${userUID}`)
}).catch(err => {
console.log(`Failed to remove photo, error: ${err}`)
});
});
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try the code
const gcs = require('@google-cloud/storage')()
const fileBucketPush = 'Storage bucket.appspot.com'; // The Storage bucket that contains the file.
const filePathPush = 'folder/'+nameImage; // File path in the bucket.
vision.detectSafeSearch(gcs.bucket(fileBucketPush).file(filePathPush))
.then((results) => {
..///
})
.catch((err) => {
console.error('ERROR:', err);
});
Enable Cloud Vision API?
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