Spring boot - FirebaseMessaging Service injection is not working in another service - spring-boot

Question

I am trying to send firebase push notifications from a spring boot application.
Here I configured the FirebaseMessaging like:
#Configuration
class FirebaseConfig {
var logger: Logger = LoggerFactory.getLogger(FirebaseConfig::class.java)
#Value("\${app.firebase-config-file}")
lateinit var firebaseConfigPath: String
#Bean("firebaseMessaging")
#Throws(IOException::class)
fun firebaseMessaging(): FirebaseMessaging {
val firebaseOptions = FirebaseOptions
.builder()
.setCredentials(GoogleCredentials.fromStream(ClassPathResource(firebaseConfigPath).inputStream))
.build()
val app = FirebaseApp.initializeApp(firebaseOptions, "QInspect")
logger.info("Firebase application has been initialized")
return FirebaseMessaging.getInstance(app)
}
}
Here is the service I am using to send the push notifications:
#Service
class FirebaseNotificationService constructor(
#Autowired val firebaseMessaging: FirebaseMessaging,
#Autowired val mobileDeviceLogService: MobileDeviceLogService
) {
private var logger: Logger = LoggerFactory.getLogger(FirebaseNotificationService::class.java)
private val gson = Gson()
fun sendNotification(token: String, title: String, body: String): Status {
try {
val notification = Notification
.builder()
.setTitle(title)
.setBody(body)
.build()
val message = Message
.builder()
.setToken(token)
.setNotification(notification)
.build()
firebaseMessaging.send(message)
logger.info("Firebase Notification sent)
return Status(Constants.ResponseCode.SUCCESS, "Success")
} catch (e: Exception) {
logger.error("Firebase Notification Failed: ${e.printStackTrace()}")
}
return Status(Constants.ResponseCode.EXCEPTION, "Failed")
}
}
I can able to send the push notification using postman using the endpoint:
#RequestMapping("/notification")
#RestController
class NotificationResource constructor(#Autowired val firebaseService: FirebaseNotificationService) {
#RequestMapping(value = ["/message"], method = [RequestMethod.POST])
#ApiOperation(value = "Send firebase push notification with token", authorizations = [Authorization(value = "basic"), Authorization(value = "oauth2", scopes = [])])
#ResponseBody
#Throws(FirebaseMessagingException::class)
fun sendNotificationMsg(#RequestParam(value = "title", required = true) title: String, #RequestParam(value = "body", required = true) body: String): Status {
val user = SessionUtil.getUser()
return firebaseService.sendNotification(user.token, title, body)
}
Now the problem is when I am trying to inject the FirebaseNotificationService in another service to send the push notifications, But it's not working without any errors.
#Service
#Transactional
class MessageSubscriber {
#Autowired
var firebaseService: FirebaseNotificationService? = null
fun sendPush() {
firebaseService?.sendNotification("token", "Some Title", "Some body")
}
}
What I am missing here?
Update:
I got the issue, it's my mistake it is going inside the FirebaseNotificationService but failing to get the user token which I didn't mention. It was returning here.
val notificationToken =
tokenService.getTopByUserId(user.uuid!!)
?: return Status(Constants.ResponseCode.FAILED, "User or token not found")