can not receive update Subscription event on 2.29.2 SDK version about amplify-swift

[lawmicha]

Hi @smediomike, can you clarify with which API calls you making?

In step 3. upload such picture to s3 storage, how do you upload the S3 picture, through Amplify.Storage.upload? And where/how is the mutation sent for the client to receive the subscription event?

[smediomike]

Hi @lawmicha

1. Amplify.Publisher.create(Amplify.DataStore.observe(model))
2. Amplify.Storage.uploadFile or Amplify.Storage.uploadData
3. try await Amplify.DataStore.save(model)
4. Received changes.mutationType "create" ==> this is correct on 2.29.2 which same to 2.17
5. delete such content by API on client or on web and mask datastore one fileld to "deleted" status by the below iOS code:

     let s3Dict = [ "roomId" : room,
                         "s3_key_filename" : fileName as Any,
                         "s3_key" : content.s3_data as Any] as [String : Any]
       jsonDict = [ "variables" : s3Dict,
                             "query" : "mutation Mark_delete_cloud_backup_ImageVideo($s3_key: String!) {\n  mark_delete_cloud_backup_ImageVideo(s3_key: $s3_key) {\n    userId\n    album\n    dateAdded\n    dateBackup\n    dateModified\n    dateTaken\n    deviceId\n    duration\n    hash\n    height\n    id\n    isdeleted\n    localPath\n    mimeType\n    orientation\n    roomId\n    s3Data\n    size\n    title\n    tn1S3Data\n    tn2S3Data\n    type\n    width\n    createdAt\n    updatedAt\n    _version\n    _deleted\n    _lastChangedAt\n  }\n}\n"
            ] as [String : Any] 
var jsonData : Data? = nil;
        do {
            jsonData = try JSONSerialization.data(withJSONObject: jsonDict as Any, options: .prettyPrinted)
        }catch {
            
        }
            
        let request = RESTRequest(apiName:"dataStoreApi",path: nil, body: jsonData)
let data = try await Amplify.API.post(request: request)
            let str = String(decoding: data, as: UTF8.self)
            print("mark delete Success: \(str)")

6. we can see this content is be deleted, but we can not receive changes.mutationType "update" event on 2.29.2, but 2.17 can receive

Note: this issue only happen iOS application go to background and then back to foreground. if application always keep in foreground, this issue will not happen.

I will check more whether we need to step #1 again if application go to background before. thanks for your help!

[smediomike]

Hi @lawmicha

add more information, I cancel old Subscription and add new Subscription after go to foreground, this issue still happen. BTW, once happen this issue, this "update" record will not be sync to local datastore till to re-start application.

[smediomike]

Hi @lawmicha
add more information, I rollback SDK version to 2.26.1; this issue will not happen.

[ruisebas]

Hi @smediomike,

We've recently addressed an issue that was causing network-related problems in the latest version 2.33.3.
Would you mind please upgrading to this version and verifying if it also addresses your issue?

Thanks!