Sync: log broken entries on processing failure.

This change prints the content of broken entries (ones that fail parsing)
to the log so it's easier to debug issues.

app/src/main/java/com/etesync/syncadapter/syncadapter/CalendarSyncManager.kt

@@ -78,7 +78,7 @@ constructor(context: Context, account: Account, settings: AccountSettings, extra
     }
 
     @Throws(IOException::class, ContactsStorageException::class, CalendarStorageException::class, InvalidCalendarException::class)
-    override fun processSyncEntry(cEntry: SyncEntry) {
+    override fun processSyncEntryImpl(cEntry: SyncEntry) {
         val inputReader = StringReader(cEntry.content)
 
         val events = Event.fromReader(inputReader)

app/src/main/java/com/etesync/syncadapter/syncadapter/ContactsSyncManager.kt

@@ -127,7 +127,7 @@ constructor(context: Context, account: Account, settings: AccountSettings, extra
     }
 
     @Throws(IOException::class, ContactsStorageException::class, CalendarStorageException::class)
-    override fun processSyncEntry(cEntry: SyncEntry) {
+    override fun processSyncEntryImpl(cEntry: SyncEntry) {
         val inputReader = StringReader(cEntry.content)
 
         val contacts = Contact.fromReader(inputReader, resourceDownloader)

app/src/main/java/com/etesync/syncadapter/syncadapter/SyncManager.kt

@@ -288,7 +288,16 @@ constructor(protected val context: Context, protected val account: Account, prot
     }
 
     @Throws(IOException::class, ContactsStorageException::class, CalendarStorageException::class, InvalidCalendarException::class)
-    protected abstract fun processSyncEntry(cEntry: SyncEntry)
+    protected abstract fun processSyncEntryImpl(cEntry: SyncEntry)
+
+    protected fun processSyncEntry(cEntry: SyncEntry) {
+        try {
+            processSyncEntryImpl(cEntry)
+        } catch (e: Exception) {
+            Logger.log.warning("Failed processing entry: ${cEntry.content}")
+            throw e
+        }
+    }
 
     private fun persistSyncEntry(uid: String?, syncEntry: SyncEntry) {
         val entry = EntryEntity()

app/src/main/java/com/etesync/syncadapter/syncadapter/TasksSyncManager.kt

@@ -68,7 +68,7 @@ class TasksSyncManager(
         return localCollection as LocalTaskList
     }
 
-    override fun processSyncEntry(cEntry: SyncEntry) {
+    override fun processSyncEntryImpl(cEntry: SyncEntry) {
         val inputReader = StringReader(cEntry.content)
 
         val tasks = Task.fromReader(inputReader)