Launching the sending of the client info in a dedicated coroutine to avoid ANR on application start

vector/src/main/java/im/vector/app/core/di/ActiveSessionHolder.kt

@@ -111,11 +111,9 @@ class ActiveSessionHolder @Inject constructor(
                 }
                 ?: sessionInitializer.tryInitialize(readCurrentSession = { activeSessionReference.get() }) { session ->
                     setActiveSession(session)
-                    runBlocking {
                     configureAndStartSessionUseCase.execute(session, startSyncing = startSync)
                 }
     }
-    }
 
     fun isWaitingForSessionInitialization() = activeSessionReference.get() == null && authenticationService.hasAuthenticatedSessions()
 

vector/src/main/java/im/vector/app/core/session/ConfigureAndStartSessionUseCase.kt

@@ -22,7 +22,9 @@ import im.vector.app.core.extensions.startSyncing
 import im.vector.app.core.notification.EnableNotificationsSettingUpdater
 import im.vector.app.core.session.clientinfo.UpdateMatrixClientInfoUseCase
 import im.vector.app.features.call.webrtc.WebRtcCallManager
+import im.vector.app.features.session.coroutineScope
 import im.vector.app.features.settings.VectorPreferences
+import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.sync.FilterService
 import timber.log.Timber
@@ -36,7 +38,7 @@ class ConfigureAndStartSessionUseCase @Inject constructor(
         private val enableNotificationsSettingUpdater: EnableNotificationsSettingUpdater,
 ) {
 
-    suspend fun execute(session: Session, startSyncing: Boolean = true) {
+    fun execute(session: Session, startSyncing: Boolean = true) {
         Timber.i("Configure and start session for ${session.myUserId}. startSyncing: $startSyncing")
         session.open()
         session.filterService().setFilter(FilterService.FilterPreset.ElementFilter)
@@ -45,9 +47,11 @@ class ConfigureAndStartSessionUseCase @Inject constructor(
         }
         session.pushersService().refreshPushers()
         webRtcCallManager.checkForProtocolsSupportIfNeeded()
+        session.coroutineScope.launch {
             if (vectorPreferences.isClientInfoRecordingEnabled()) {
                 updateMatrixClientInfoUseCase.execute(session)
             }
+        }
         enableNotificationsSettingUpdater.onSessionsStarted(session)
     }
 }

vector/src/test/java/im/vector/app/core/session/ConfigureAndStartSessionUseCaseTest.kt

@@ -18,6 +18,7 @@ package im.vector.app.core.session
 
 import im.vector.app.core.extensions.startSyncing
 import im.vector.app.core.session.clientinfo.UpdateMatrixClientInfoUseCase
+import im.vector.app.features.session.coroutineScope
 import im.vector.app.test.fakes.FakeContext
 import im.vector.app.test.fakes.FakeEnableNotificationsSettingUpdater
 import im.vector.app.test.fakes.FakeSession
@@ -32,6 +33,7 @@ import io.mockk.mockkStatic
 import io.mockk.runs
 import io.mockk.unmockkAll
 import io.mockk.verify
+import kotlinx.coroutines.test.advanceUntilIdle
 import kotlinx.coroutines.test.runTest
 import org.junit.After
 import org.junit.Before
@@ -57,6 +59,7 @@ class ConfigureAndStartSessionUseCaseTest {
     @Before
     fun setup() {
         mockkStatic("im.vector.app.core.extensions.SessionKt")
+        mockkStatic("im.vector.app.features.session.SessionCoroutineScopesKt")
     }
 
     @After
@@ -68,6 +71,7 @@ class ConfigureAndStartSessionUseCaseTest {
     fun `given start sync needed and client info recording enabled when execute then it should be configured properly`() = runTest {
         // Given
         val fakeSession = givenASession()
+        every { fakeSession.coroutineScope } returns this
         fakeWebRtcCallManager.givenCheckForProtocolsSupportIfNeededSucceeds()
         coJustRun { fakeUpdateMatrixClientInfoUseCase.execute(any()) }
         fakeVectorPreferences.givenIsClientInfoRecordingEnabled(isEnabled = true)
@@ -75,6 +79,7 @@ class ConfigureAndStartSessionUseCaseTest {
 
         // When
         configureAndStartSessionUseCase.execute(fakeSession, startSyncing = true)
+        advanceUntilIdle()
 
         // Then
         verify { fakeSession.startSyncing(fakeContext.instance) }
@@ -88,6 +93,7 @@ class ConfigureAndStartSessionUseCaseTest {
     fun `given start sync needed and client info recording disabled when execute then it should be configured properly`() = runTest {
         // Given
         val fakeSession = givenASession()
+        every { fakeSession.coroutineScope } returns this
         fakeWebRtcCallManager.givenCheckForProtocolsSupportIfNeededSucceeds()
         coJustRun { fakeUpdateMatrixClientInfoUseCase.execute(any()) }
         fakeVectorPreferences.givenIsClientInfoRecordingEnabled(isEnabled = false)
@@ -95,6 +101,7 @@ class ConfigureAndStartSessionUseCaseTest {
 
         // When
         configureAndStartSessionUseCase.execute(fakeSession, startSyncing = true)
+        advanceUntilIdle()
 
         // Then
         verify { fakeSession.startSyncing(fakeContext.instance) }
@@ -108,6 +115,7 @@ class ConfigureAndStartSessionUseCaseTest {
     fun `given a session and no start sync needed when execute then it should be configured properly`() = runTest {
         // Given
         val fakeSession = givenASession()
+        every { fakeSession.coroutineScope } returns this
         fakeWebRtcCallManager.givenCheckForProtocolsSupportIfNeededSucceeds()
         coJustRun { fakeUpdateMatrixClientInfoUseCase.execute(any()) }
         fakeVectorPreferences.givenIsClientInfoRecordingEnabled(isEnabled = true)
@@ -115,6 +123,7 @@ class ConfigureAndStartSessionUseCaseTest {
 
         // When
         configureAndStartSessionUseCase.execute(fakeSession, startSyncing = false)
+        advanceUntilIdle()
 
         // Then
         verify(inverse = true) { fakeSession.startSyncing(fakeContext.instance) }