Sync: fix crash on gplay flavor and reschedule when no network instead of showing a potential notification all the time

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/network/NetworkConnectivityChecker.kt

@@ -62,6 +62,9 @@ internal class NetworkConnectivityChecker @Inject constructor(private val contex
 
     override fun onMoveToForeground() {
         merlin.bind()
+        merlinsBeard.hasInternetAccess {
+            hasInternetAccess = it
+        }
         merlin.registerDisconnectable {
             if (hasInternetAccess) {
                 Timber.v("On Disconnect")

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/job/SyncService.kt

@@ -34,8 +34,9 @@ import java.util.concurrent.atomic.AtomicBoolean
  * in order to be able to perform a sync even if the app is not running.
  * The <receiver> and <service> must be declared in the Manifest or the app using the SDK
  */
-open class SyncService : Service() {
+abstract class SyncService : Service() {
 
+    private var userId: String? = null
     private var mIsSelfDestroyed: Boolean = false
 
     private lateinit var syncTask: SyncTask
@@ -50,9 +51,10 @@ open class SyncService : Service() {
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
         Timber.i("onStartCommand $intent")
         intent?.let {
-            val userId = it.getStringExtra(EXTRA_USER_ID)
-            val sessionComponent = Matrix.getInstance(applicationContext).sessionManager.getSessionComponent(userId)
+            val safeUserId = it.getStringExtra(EXTRA_USER_ID) ?: return@let
+            val sessionComponent = Matrix.getInstance(applicationContext).sessionManager.getSessionComponent(safeUserId)
                     ?: return@let
+            userId = safeUserId
             syncTask = sessionComponent.syncTask()
             networkConnectivityChecker = sessionComponent.networkConnectivityChecker()
             taskExecutor = sessionComponent.taskExecutor()
@@ -87,9 +89,11 @@ open class SyncService : Service() {
 
     private suspend fun doSync() {
         if (!networkConnectivityChecker.hasInternetAccess()) {
-            Timber.v("No network, try to sync again in 10s")
-            delay(DELAY_NO_NETWORK)
-            doSync()
+            Timber.v("No network reschedule to avoid wasting resources")
+            userId?.also {
+                onRescheduleAsked(it, delay = 10_000L)
+            }
+            stopMe()
             return
         }
         Timber.v("Execute sync request with timeout 0")
@@ -109,6 +113,8 @@ open class SyncService : Service() {
         }
     }
 
+    abstract fun onRescheduleAsked(userId: String, delay: Long)
+
     override fun onBind(intent: Intent?): IBinder? {
         return null
     }
@@ -116,7 +122,6 @@ open class SyncService : Service() {
     companion object {
         const val EXTRA_USER_ID = "EXTRA_USER_ID"
         private const val TIME_OUT = 0L
-        private const val DELAY_NO_NETWORK = 10_000L
         private const val DELAY_FAILURE = 5_000L
     }
 }

vector/src/gplay/AndroidManifest.xml

@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="im.vector.riotx">
 
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+
     <application>
 
         <!-- Firebase components -->

vector/src/main/java/im/vector/riotx/core/services/VectorSyncService.kt

@@ -15,11 +15,12 @@
  */
 package im.vector.riotx.core.services
 
+import android.app.AlarmManager
 import android.app.NotificationManager
+import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
 import android.os.Build
-import androidx.core.content.ContextCompat
 import im.vector.matrix.android.internal.session.sync.job.SyncService
 import im.vector.riotx.R
 import im.vector.riotx.core.extensions.vectorComponent
@@ -44,16 +45,6 @@ class VectorSyncService : SyncService() {
         notificationUtils = vectorComponent().notificationUtils()
     }
 
-    override fun onDestroy() {
-        removeForegroundNotif()
-        super.onDestroy()
-    }
-
-    private fun removeForegroundNotif() {
-        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-        notificationManager.cancel(NotificationUtils.NOTIFICATION_ID_FOREGROUND_SERVICE)
-    }
-
     /**
      * Service is started in fdroid mode when no FCM is available or is used for initialSync
      */
@@ -65,4 +56,33 @@ class VectorSyncService : SyncService() {
         }
         return super.onStartCommand(intent, flags, startId)
     }
+
+    override fun onDestroy() {
+        removeForegroundNotif()
+        super.onDestroy()
+    }
+
+    override fun onRescheduleAsked(userId: String, delay: Long) {
+        reschedule(userId, delay)
+    }
+
+    private fun removeForegroundNotif() {
+        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+        notificationManager.cancel(NotificationUtils.NOTIFICATION_ID_FOREGROUND_SERVICE)
+    }
+
+    private fun reschedule(userId: String, delay: Long) {
+        val pendingIntent = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            PendingIntent.getForegroundService(this, 0, newIntent(this, userId), 0)
+        } else {
+            PendingIntent.getService(this, 0, newIntent(this, userId), 0)
+        }
+        val firstMillis = System.currentTimeMillis() + delay
+        val alarmMgr = getSystemService(Context.ALARM_SERVICE) as AlarmManager
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            alarmMgr.setAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, firstMillis, pendingIntent)
+        } else {
+            alarmMgr.set(AlarmManager.RTC_WAKEUP, firstMillis, pendingIntent)
+        }
+    }
 }