BeanInstantitationException: Failed to Instantiate Service - firebase

Question

I am developing a simple spring boot application in Kotlin. I have one of my service working completely fine. However when i define another service i get this error
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'categoryService' defined in file [C:\Users\userName\Documents\Projects\ProjectA\backend\proj\build\classes\kotlin\main\c
om\example\test\category\service\CategoryService.class]: Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [c
om.example.test.category.service.CategoryService]: Constructor threw exception; nested exception is java.lang.IllegalStateException: FirebaseApp with name [DEFAULT] doesn't exist.
at org.springframework.beans.factory
When i remove this service, everything works fine. So adding second service causes this issue.
//Service
#Service
class CategoryService : CategoryServiceInterface {
override fun deleteCategory(userToken: String, categoryId: String): String {
return ""
}
}
//Controller
#RestController
class CategoryController {
#Autowired
lateinit var categoryService: CategoryService
#DeleteMapping("/category")
fun deleteCategory(#RequestHeader(name = "Authorization") token: String, #RequestBody categoryId: String) =
categoryService.deleteCategory(
userToken = token,
categoryId = categoryId
)
//MainApp
#SpringBootApplication
class MainApplication
fun main(args: Array<String>) {
SpringApplication.run(MainApplication::class.java, *args)
}
FirebaseInitializer
#Service
class FirebaseInitializer {
#PostConstruct
fun initialize() {
try {
val serviceAccount = ClassPathResource("serviceaccount.json")
val options = FirebaseOptions
.builder()
.setCredentials(GoogleCredentials.fromStream(serviceAccount.inputStream))
.setDatabaseUrl("https://databaseurl.firebaseio.com")
.build()
FirebaseApp.initializeApp(options)
} catch (e: Exception) {
}
}}
I used this article to set up my first service https://medium.com/techwasti/spring-boot-firebase-crud-b0afab27b26e
If i remove this second service, my first service works completely fine. Any help would be greatly appreciated

Answer 1

So i found the problem, If i initialize the firebase with the way mentioned in the article above as a service and using post construct, it gives me the above issues.
I moved my firebase initialize code in my Spring boot application class and everything now works as expected.
#SpringBootApplication
class FoodiesApplication
fun main(args: Array<String>) {
try {
val serviceAccount = ClassPathResource("serviceaccount.json")
val options = FirebaseOptions
.builder()
.setCredentials(GoogleCredentials.fromStream(serviceAccount.inputStream))
.setDatabaseUrl("https://databaseurl.firebaseio.com")
.build()
FirebaseApp.initializeApp(options)
} catch (e: Exception) {
}
SpringApplication.run(FoodiesApplication::class.java, *args)
}

Answer 2

Just add #Lazy annotation to bean.