React-native-firebase: Custom metadata is not defined when uploading file

[DavideValdo]

Client-side code:

firebase.storage().ref('products/' + Math.random().toString(36).substr(2, 9)).putFile(localImageURL, {
            contentType: 'image/jpeg',
            customMetadata: {
                merchantID: Auth.merchantID,
                category: 'knitwear'
            }
        }).on('state_changed', 
            (progress) => {
                dispatch({
                    type: 'UPLOAD_STATE_CHANGED',
                    data: progress
                })
            },
            (error) => {
                dispatch({
                    type: 'UPLOAD_FILE_ERROR',
                    data: error
                })
            },
            (uploadedFile) => {
                console.debug(uploadedFile);

                dispatch({
                    type: 'UPLOAD_FILE_COMPLETED',
                })
            })
    }

Then I want to catch this within a Cloud Function:

exports.generateThumbnail = functions.storage.object().onChange(event => {
  [...]
  console.log("Event:", event)
  const _merchant = event.data.customMetadata.merchantID;
  const _category = event.data.customMetadata.category;

Still, event.data.customMetadata is never defined.

• Platform: iPhone 6 Simulator, iOS 10.3
• macOS Sierra 10.12.5
• XCode 8.3.2
• react-native-cli: 2.0.1
• react-native: 0.45.1
• RNFirebase 2.0.4

[DavideValdo]

Inside RNFirebaseStorage.m I can see this:

- (FIRStorageMetadata *)buildMetadataFromMap:(NSDictionary *)metadata {
    NSMutableDictionary *result = [metadata mutableCopy];
    result[@"metadata"] = metadata[@"customMetadata"];
    [result removeObjectForKey:@"customMetadata"];
    return [[FIRStorageMetadata alloc] initWithDictionary:result];
}

Is the customMetadata key being willingly removed for a specific purpose?

[Salakar]

@DavideValdo that's a weird looking issue template you filled out there 👀

[Salakar]

Next time please could you fill it out, we get a ton of issues and it's there to avoid wasting time going back and forth 🙈 it also helps other looking for similar issues.

As for your issue, can you change your buildMetadataFromMap to the below and see if it works:

- (FIRStorageMetadata *)buildMetadataFromMap:(NSDictionary *)metadata {
    return [[FIRStorageMetadata alloc] initWithDictionary:metadata];
}

[DavideValdo]

Sorry about that, filled issue template for completeness. Trying your solution ASAP.

[DavideValdo]

Sadly your solution didn't work
I'm going to try with Firebase from a webpage to rule out a Cloud Function issue, then edit this.

[Salakar]

@DavideValdo I have a feeling it's our end, but if you could rule it out to make sure that'd be super helpful :)

[Salakar]

Fixed in v3 (not yet released - keep an eye out for it).

Thanks for submitting the issue. 👍