Hello ! I want to store a temporary redis connect...

# getting-started

[Distractic]

Hello !

I want to store a temporary redis connection in the current coroutine context to use it later / avoid multiple new connections.

Previously, I had this code :

public suspend inline fun <T> connect(crossinline body: suspend (RedisCoroutinesCommands<ByteArray, ByteArray>) -> T): T {
        contract {
            callsInPlace(body, InvocationKind.EXACTLY_ONCE)
        }
        return connectionManager.poolStateful.acquire {
            val newConnection = it.coroutines()
                body(newConnection)
        }
    }

And my code works.

I changed to store the current connection like :

public suspend inline fun <T> connect(crossinline body: suspend (RedisCoroutinesCommands<ByteArray, ByteArray>) -> T): T {
        contract {
            callsInPlace(body, InvocationKind.EXACTLY_ONCE)
        }

        val currentContext = currentCoroutineContext()
        val connection = currentContext[RedisConnection]
        if (connection != null) return body(connection.connection)

        return connectionManager.poolStateful.acquire {
            val newConnection = it.coroutines()
            withContext(currentContext + RedisConnection(newConnection)) {
                body(newConnection)
            }
        }
    }

And I have a new error:

Flow invariant is violated:
        Flow was collected in [RunningInRunTest, kotlinx.coroutines.test.TestCoroutineScheduler@458031da, kotlinx.coroutines.test.TestScopeKt$TestScope$$inlined$CoroutineExceptionHandler$1@7be94cd6, CoroutineId(9), "coroutine#9":StandaloneCoroutine{Active}@20cff21e, StandardTestDispatcher[scheduler=kotlinx.coroutines.test.TestCoroutineScheduler@458031da]],
        but emission happened in [RunningInRunTest, kotlinx.coroutines.test.TestCoroutineScheduler@458031da, kotlinx.coroutines.test.TestScopeKt$TestScope$$inlined$CoroutineExceptionHandler$1@7be94cd6, CoroutineId(9), RedisConnectionImpl@463045fb, kotlinx.coroutines.UndispatchedMarker@27ab206, "coroutine#9":UndispatchedCoroutine{Active}@3344d163, StandardTestDispatcher[scheduler=kotlinx.coroutines.test.TestCoroutineScheduler@458031da]].
        Please refer to 'flow' documentation or use 'flowOn' instead

How can I use the new current coroutine context to handle a flow ?