no something like ``` suspend fun Db saveAsync = async DbPoo

Question

no something like ``` suspend fun Db saveAsync = async DbPool db save db saveAsync await or suspend fun Db saveAsync = run DbPool db save db saveAsync ```

qwert_ukg · Answer

< gildor> could u plz help me some more if i want to handle saving how i can to do this for examle im ready to return ansver to client right after reseveving request and then will be async saving but after saving is complite i want to do something more with it Its much hurder to understand for me then callback invocation bow

gildor · Answer

You have two options 1 Return successful answer or just Unit or throw exception So exactly what you have with synchronous save 2 Use some result object that has two states success with result and fail with exception object Kotlin sealed classes really good for this So because coroutines sequential by default you just call ```db saveAsync doSomethingElse ``` doSomethingElse will be called after db save will be finished

qwert_ukg · Answer

```doSomthingElse ``` should be ```suspend``` func and should be called into async func

gildor · Answer

up to you

gildor · Answer

the only difference is that `saveAsync ` doesn t lock thread from which you called it

gildor · Answer

and allows you to write code in synchronous style instead callbacks features

qwert_ukg · Answer

have a really strange behavior then i call action of controller manually from browser saving complited normally but if i run a tests saveAsync will not be invoke

qwert_ukg · Answer

just modify suspend func like this

qwert_ukg · Answer

```suspend fun NotificationRepository sendAndSaveAsync notification Notification = run CommonPool with notification messageType sender makeRequest notification responseBody = messageType sender getResponse this save this ```

qwert_ukg · Answer

and invoke it like this ```async CommonPool saveAsync notification ```

gildor · Answer

If you run async don t forget to call join

gildor · Answer

Also just general advice Don t use CommonPool for blocking operations Create a separate pool for that

gildor · Answer

I don t understand your problem about saveAsync will not be invoke

qwert_ukg · Answer

then i run my tests saving is not invoied ```notificationsForSendRequests forEach val json = mockMvc perform it andExpect status isOk andReturn response contentAsString val identifier = JsonPath read lt Long gt json $ identifier assertTrue identifier gt 0 ```

qwert_ukg · Answer

but if i run app and send a rest request everything is fine

gildor · Answer

I don t understand by this code fragment what s went wrong in this test code

qwert_ukg · Answer

what di u mean dont forget to call join

qwert_ukg · Answer

async pool havent a job as i understand