fixed issues with reporting sync state events from different threads

changelog.d/6341.bugfix

@@ -0,0 +1 @@
+Fixed issues with reporting sync state events from different threads

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/sync/SyncService.kt

@@ -60,9 +60,9 @@ interface SyncService {
     fun getSyncStateLive(): LiveData<SyncState>
 
     /**
-     * Get the [SyncRequestState] as a LiveData.
+     * Get the [SyncRequestState] as a SharedFlow.
      */
-    fun getSyncRequestStateLive(): LiveData<SyncRequestState>
+    fun getSyncRequestStateFlow(): SharedFlow<SyncRequestState>
 
     /**
      * This method returns a flow of SyncResponse. New value will be pushed through the sync thread.

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/DefaultSyncService.kt

@@ -16,8 +16,6 @@
 
 package org.matrix.android.sdk.internal.session.sync
 
-import androidx.lifecycle.LiveData
-import org.matrix.android.sdk.api.session.sync.SyncRequestState
 import org.matrix.android.sdk.api.session.sync.SyncService
 import org.matrix.android.sdk.internal.di.SessionId
 import org.matrix.android.sdk.internal.di.WorkManagerProvider
@@ -75,9 +73,7 @@ internal class DefaultSyncService @Inject constructor(
 
     override fun getSyncState() = getSyncThread().currentState()
 
-    override fun getSyncRequestStateLive(): LiveData<SyncRequestState> {
+    override fun getSyncRequestStateFlow() = syncRequestStateTracker.syncRequestState
-        return syncRequestStateTracker.syncRequestState
-    }
 
     override fun hasAlreadySynced(): Boolean {
         return syncTokenStore.getLastToken() != null

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/SyncRequestStateTracker.kt

@@ -16,23 +16,26 @@
 
 package org.matrix.android.sdk.internal.session.sync
 
-import androidx.lifecycle.MutableLiveData
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.session.sync.InitialSyncStep
 import org.matrix.android.sdk.api.session.sync.SyncRequestState
 import org.matrix.android.sdk.internal.session.SessionScope
 import javax.inject.Inject
 
 @SessionScope
-internal class SyncRequestStateTracker @Inject constructor() :
+internal class SyncRequestStateTracker @Inject constructor(
-        ProgressReporter {
+        private val coroutineScope: CoroutineScope
+) : ProgressReporter {
 
-    val syncRequestState = MutableLiveData<SyncRequestState>()
+    val syncRequestState = MutableSharedFlow<SyncRequestState>()
 
     private var rootTask: TaskInfo? = null
 
     // Only to be used for incremental sync
     fun setSyncRequestState(newSyncRequestState: SyncRequestState.IncrementalSyncRequestState) {
-        syncRequestState.postValue(newSyncRequestState)
+        emitSyncState(newSyncRequestState)
     }
 
     /**
@@ -42,7 +45,9 @@ internal class SyncRequestStateTracker @Inject constructor() :
             initialSyncStep: InitialSyncStep,
             totalProgress: Int
     ) {
-        endAll()
+        if (rootTask != null) {
+            endAll()
+        }
         rootTask = TaskInfo(initialSyncStep, totalProgress, null, 1F)
         reportProgress(0F)
     }
@@ -71,7 +76,7 @@ internal class SyncRequestStateTracker @Inject constructor() :
                 // Update the progress of the leaf and all its parents
                 leaf.setProgress(progress)
                 // Then update the live data using leaf wording and root progress
-                syncRequestState.postValue(SyncRequestState.InitialSyncProgressing(leaf.initialSyncStep, root.currentProgress.toInt()))
+                emitSyncState(SyncRequestState.InitialSyncProgressing(leaf.initialSyncStep, root.currentProgress.toInt()))
             }
         }
     }
@@ -86,13 +91,19 @@ internal class SyncRequestStateTracker @Inject constructor() :
                 // And close it
                 endedTask.parent.child = null
             } else {
-                syncRequestState.postValue(SyncRequestState.Idle)
+                emitSyncState(SyncRequestState.Idle)
             }
         }
     }
 
     fun endAll() {
         rootTask = null
-        syncRequestState.postValue(SyncRequestState.Idle)
+        emitSyncState(SyncRequestState.Idle)
+    }
+
+    private fun emitSyncState(state: SyncRequestState) {
+        coroutineScope.launch {
+            syncRequestState.emit(state)
+        }
     }
 }

vector/src/main/java/im/vector/app/AppStateHandler.kt

@@ -18,7 +18,6 @@ package im.vector.app
 
 import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.LifecycleOwner
-import androidx.lifecycle.asFlow
 import arrow.core.Option
 import im.vector.app.core.di.ActiveSessionHolder
 import im.vector.app.core.utils.BehaviorDataSource
@@ -147,8 +146,7 @@ class AppStateHandler @Inject constructor(
     }
 
     private fun observeSyncStatus(session: Session) {
-        session.syncService().getSyncRequestStateLive()
+        session.syncService().getSyncRequestStateFlow()
-                .asFlow()
                 .filterIsInstance<SyncRequestState.IncrementalSyncDone>()
                 .map { session.spaceService().getRootSpaceSummaries().size }
                 .distinctUntilChanged()

vector/src/main/java/im/vector/app/AutoRageShaker.kt

@@ -17,7 +17,6 @@
 package im.vector.app
 
 import android.content.SharedPreferences
-import androidx.lifecycle.asFlow
 import im.vector.app.core.di.ActiveSessionHolder
 import im.vector.app.features.rageshake.BugReporter
 import im.vector.app.features.rageshake.ReportType
@@ -261,8 +260,7 @@ class AutoRageShaker @Inject constructor(
         this.currentActiveSessionId = sessionId
 
         hasSynced = session.syncService().hasAlreadySynced()
-        session.syncService().getSyncRequestStateLive()
+        session.syncService().getSyncRequestStateFlow()
-                .asFlow()
                 .onEach {
                     hasSynced = it !is SyncRequestState.InitialSyncProgressing
                 }

vector/src/main/java/im/vector/app/features/analytics/accountdata/AnalyticsAccountDataViewModel.kt

@@ -16,7 +16,6 @@
 
 package im.vector.app.features.analytics.accountdata
 
-import androidx.lifecycle.asFlow
 import com.airbnb.mvrx.MavericksViewModelFactory
 import dagger.assisted.Assisted
 import dagger.assisted.AssistedFactory
@@ -66,7 +65,7 @@ class AnalyticsAccountDataViewModel @AssistedInject constructor(
 
     private fun observeInitSync() {
         combine(
-                session.syncService().getSyncRequestStateLive().asFlow(),
+                session.syncService().getSyncRequestStateFlow(),
                 analytics.getUserConsent(),
                 analytics.getAnalyticsId()
         ) { status, userConsent, analyticsId ->

vector/src/main/java/im/vector/app/features/home/HomeActivityViewModel.kt

@@ -16,7 +16,6 @@
 
 package im.vector.app.features.home
 
-import androidx.lifecycle.asFlow
 import com.airbnb.mvrx.Mavericks
 import com.airbnb.mvrx.MavericksViewModelFactory
 import com.airbnb.mvrx.ViewModelContext
@@ -218,8 +217,7 @@ class HomeActivityViewModel @AssistedInject constructor(
     private fun observeInitialSync() {
         val session = activeSessionHolder.getSafeActiveSession() ?: return
 
-        session.syncService().getSyncRequestStateLive()
+        session.syncService().getSyncRequestStateFlow()
-                .asFlow()
                 .onEach { status ->
                     when (status) {
                         is SyncRequestState.Idle -> {

vector/src/main/java/im/vector/app/features/home/HomeDetailViewModel.kt

@@ -199,8 +199,7 @@ class HomeDetailViewModel @AssistedInject constructor(
                     copy(syncState = syncState)
                 }
 
-        session.syncService().getSyncRequestStateLive()
+        session.syncService().getSyncRequestStateFlow()
-                .asFlow()
                 .filterIsInstance<SyncRequestState.IncrementalSyncRequestState>()
                 .setOnEach {
                     copy(incrementalSyncRequestState = it)

vector/src/main/java/im/vector/app/features/home/room/detail/TimelineViewModel.kt

@@ -18,7 +18,6 @@ package im.vector.app.features.home.room.detail
 
 import android.net.Uri
 import androidx.annotation.IdRes
-import androidx.lifecycle.asFlow
 import com.airbnb.mvrx.Async
 import com.airbnb.mvrx.Fail
 import com.airbnb.mvrx.Loading
@@ -1130,8 +1129,7 @@ class TimelineViewModel @AssistedInject constructor(
                     copy(syncState = syncState)
                 }
 
-        session.syncService().getSyncRequestStateLive()
+        session.syncService().getSyncRequestStateFlow()
-                .asFlow()
                 .filterIsInstance<SyncRequestState.IncrementalSyncRequestState>()
                 .setOnEach {
                     copy(incrementalSyncRequestState = it)