CODEWITHSUNDEEP
validationfirebasegoogle-cloud-storagegoogle-cloud-functions
Sadman Rizwan
Sadman Rizwan

Reputation: 85

Validate storage file data in Firebase cloud function

After uploading a file in Firebase storage I want to call a firebase cloud function from my web app which will validate the file data I sent to it, and then store it in the real-time database.

I am calling the function using the following code:

var fileRef = 'Files/' + user.uid + '/' + fileId + '/' + file.name;
var storage = firebase.storage().ref(fileRef);
//Upload the file
//..................
// After uploading the file
storage.getMetadata().then(function(metadata) {
    var date = metadata.timeCreated.toString();
    var storage = firebase.storage().ref('Files/' + user.uid + '/' + fileId + '/' + file.name);

    storage.getDownloadURL().then(function(url){
        var saveFileData = functions.httpsCallable('saveFileData');
        saveFileData({
            fileId: fileId,
            fileRef: fileRef,
            fileData: {
                Uploader: user.uid,
                Title: title,
                FileName: file.name,
                Size: fileSize,
                DownloadURL: url,
                UploadDate: date,
            }
        }).then(function(){
            // Do something
        });
    });
});

I want to validate values of FileName, Size, DownloadURL and UploadDate in the cloud function based on the following conditions:

What will be an appropriate way to do this from Firebase cloud function?

Upvotes: 0

Views: 1120

Answers (1)

Rahul Somasundaram
Rahul Somasundaram

Reputation: 596

You can use storage triggers, Deploy in Firebase Cloud Functions,

In the object you will get all the metadata for the uploaded file as like here

exports.generateMetaForUpload = functions.storage
  .object()
  .onFinalize(object => {
    console.log(object);
       //do whatever you need to verify
  });

Upvotes: 3

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