Observing file upload status RxJava

TestActivity.kt

LiveSubject.FILE_UPLOAD_FILE.subscribe({
            when(it) {
                is UploadFileStatus.Complete -> {
                    Glide.with(this).load(it.s3Url).into(image)
                    toast("Uploaded image")
                    logD("complete upload")
                }
                is UploadFileStatus.Error -> {
                    logE("could not upload")
                }
                is UploadFileStatus.FileStatus -> {
                    logV("status is ${it.status}")
                    progress.progress = it.status
                }
                is UploadFileStatus.Start -> {
                    logD("Upload started")
                }
            }
        }, {
            logE("Rx threw error, error $it ${it.printStackTrace()}")
        })