firebase 函数中有没有办法删除与正则表达式匹配的存储文件？

Question

I can't find a way to delete all the files inside firebase storage that match a regular expression. I would like to use something like:

        const bucket = storage.bucket(functions.config().firebase.storageBucket);
        const filePath = 'images/*.png';
        const file = bucket.file(filePath);
        file.delete();

Or similar to be able to delete all files inside "images" with png extension.

I tried searching in Stackoverflow and in the samples repository without luck https://github.com/firebase/functions-samples

Any help would be much appreciated. Thanks!

Answer 1

No. In order to delete a file from Cloud Storage, you need to be able to construct a full path to that file. There are no wildcards or regular expressions.

It's common to store the paths to files in a database in order to easily discover the names of files to delete by using some query.

Answer 2

If you want to do this in Cloud Functions, you'll be using the Firebase Admin SDK. And the Cloud Storage functionality in there ( admin.storage() ) is a thin wrapper around the Cloud Storage SDK for Node.js. So if you search for cloud storage node.js path regular expression you'll get some relevant results.

• How to get files from Google Cloud Storage bucket based on a regular expression? , which indicates that prefix matching is quite possible with bucket.getFiles({ prefix: 'path/to/file' }... .

Answer 3

What about this solution

FirebaseStorage storage = FirebaseStorage.getInstance();
StorageReference mStorageRef = 
    storage.getReference().child("fotos_usuarios/"+id);
mStorageRef.listAll().addOnSuccessListener(listResult -> {
    for (StorageReference item : listResult.getItems()) {
        if (item.getName().contains("SOME_WORD")){
            item.delete();
        }
    }
})