Fix: ANR caused by model.add(), model.initializeFromJson(), or modelstore.load()

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/core/internal/operations/impl/OperationRepo.kt

@@ -1,5 +1,6 @@
 package com.onesignal.core.internal.operations.impl
 
+import com.onesignal.common.threading.OSPrimaryCoroutineScope
 import com.onesignal.common.threading.WaiterWithValue
 import com.onesignal.core.internal.config.ConfigModelStore
 import com.onesignal.core.internal.operations.ExecutionResult
@@ -102,14 +103,23 @@ internal class OperationRepo(
         }
     }
 
+    /**
+     *  Enqueuing will be performed in a designate coroutine and may not be added instantly.
+     *  This is to prevent direct enqueuing from the main thread that may cause a deadlock if loading
+     *  is still in process.
+     *
+     *  If the enqueuing needs to be suspended, use enqueueAndWait() instead.
+     */
     override fun enqueue(
         operation: Operation,
         flush: Boolean,
     ) {
         Logging.log(LogLevel.DEBUG, "OperationRepo.enqueue(operation: $operation, flush: $flush)")
 
         operation.id = UUID.randomUUID().toString()
-        internalEnqueue(OperationQueueItem(operation, bucket = enqueueIntoBucket), flush, true)
+        OSPrimaryCoroutineScope.execute {
+            internalEnqueue(OperationQueueItem(operation, bucket = enqueueIntoBucket), flush, true)
+        }
     }
 
     override suspend fun enqueueAndWait(

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/session/internal/session/impl/SessionListener.kt

@@ -1,6 +1,5 @@
 package com.onesignal.session.internal.session.impl
 
-import com.onesignal.common.threading.OSPrimaryCoroutineScope
 import com.onesignal.common.threading.suspendifyOnThread
 import com.onesignal.core.internal.config.ConfigModelStore
 import com.onesignal.core.internal.operations.IOperationRepo
@@ -41,10 +40,7 @@ internal class SessionListener(
     }
 
     override fun onSessionStarted() {
-        // enqueue the operation in background
-        OSPrimaryCoroutineScope.execute {
-            _operationRepo.enqueue(TrackSessionStartOperation(_configModelStore.model.appId, _identityModelStore.model.onesignalId), true)
-        }
+        _operationRepo.enqueue(TrackSessionStartOperation(_configModelStore.model.appId, _identityModelStore.model.onesignalId), true)
     }
 
     override fun onSessionActive() {
@@ -58,12 +54,9 @@ internal class SessionListener(
             Logging.error("SessionListener.onSessionEnded sending duration of $durationInSeconds seconds")
         }
 
-        // enqueue the operation in background
-        OSPrimaryCoroutineScope.execute {
-            _operationRepo.enqueue(
-                TrackSessionEndOperation(_configModelStore.model.appId, _identityModelStore.model.onesignalId, durationInSeconds),
-            )
-        }
+        _operationRepo.enqueue(
+            TrackSessionEndOperation(_configModelStore.model.appId, _identityModelStore.model.onesignalId, durationInSeconds),
+        )
 
         suspendifyOnThread {
             _outcomeEventsController.sendSessionEndOutcomeEvent(durationInSeconds)

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/user/internal/service/UserRefreshService.kt

@@ -1,7 +1,6 @@
 package com.onesignal.user.internal.service
 
 import com.onesignal.common.IDManager
-import com.onesignal.common.threading.OSPrimaryCoroutineScope
 import com.onesignal.core.internal.application.IApplicationService
 import com.onesignal.core.internal.config.ConfigModelStore
 import com.onesignal.core.internal.operations.IOperationRepo
@@ -29,14 +28,12 @@ class UserRefreshService(
             return
         }
 
-        OSPrimaryCoroutineScope.execute {
-            _operationRepo.enqueue(
-                RefreshUserOperation(
-                    _configModelStore.model.appId,
-                    _identityModelStore.model.onesignalId,
-                ),
-            )
-        }
+        _operationRepo.enqueue(
+            RefreshUserOperation(
+                _configModelStore.model.appId,
+                _identityModelStore.model.onesignalId,
+            ),
+        )
     }
 
     override fun start() = _sessionService.subscribe(this)