Added debug setting for DB checkpoints

app/src/main/java/eu/faircode/email/FragmentOptionsMisc.java

@@ -124,6 +124,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
     private SwitchCompat swDebug;
     private SwitchCompat swQueries;
     private SwitchCompat swWal;
+    private SwitchCompat swCheckpoints;
     private TextView tvSqliteCache;
     private SeekBar sbSqliteCache;
     private ImageButton ibSqliteCache;
@@ -157,7 +158,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             "shortcuts", "fts",
             "classification", "class_min_probability", "class_min_difference",
             "language", "deepl_enabled", "watchdog", "updates", "weekly",
-            "experiments", "wal", "query_threads", "sqlite_cache", "crash_reports", "cleanup_attachments",
+            "experiments", "wal", "checkpoints", "query_threads", "sqlite_cache", "crash_reports", "cleanup_attachments",
             "protocol", "debug", "log_level",
             "use_modseq", "perform_expunge",
             "auth_plain", "auth_login", "auth_ntlm", "auth_sasl",
@@ -239,6 +240,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         swDebug = view.findViewById(R.id.swDebug);
         swQueries = view.findViewById(R.id.swQueries);
         swWal = view.findViewById(R.id.swWal);
+        swCheckpoints = view.findViewById(R.id.swCheckpoints);
         tvSqliteCache = view.findViewById(R.id.tvSqliteCache);
         sbSqliteCache = view.findViewById(R.id.sbSqliteCache);
         ibSqliteCache = view.findViewById(R.id.ibSqliteCache);
@@ -614,6 +616,13 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
             }
         });
 
+        swCheckpoints.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
+                prefs.edit().putBoolean("checkpoints", checked).apply();
+            }
+        });
+
         sbSqliteCache.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
             @Override
             public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
@@ -1097,6 +1106,7 @@ public class FragmentOptionsMisc extends FragmentBase implements SharedPreferenc
         swDebug.setChecked(prefs.getBoolean("debug", false));
         swQueries.setChecked(prefs.getInt("query_threads", 4) < 4);
         swWal.setChecked(prefs.getBoolean("wal", true));
+        swCheckpoints.setChecked(prefs.getBoolean("checkpoints", true));
 
         int sqlite_cache = prefs.getInt("sqlite_cache", DB.DB_DEFAULT_CACHE);
         int cache_size = sqlite_cache * class_mb * 1024 / 100;

app/src/main/java/eu/faircode/email/WorkerFts.java

@@ -57,14 +57,14 @@ public class WorkerFts extends Worker {
             Log.i("FTS index");
             Context context = getApplicationContext();
 
-            DB.checkpoint(context);
+            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+            boolean checkpoints = prefs.getBoolean("checkpoints", true);
 
             int indexed = 0;
             List<Long> ids = new ArrayList<>(INDEX_BATCH_SIZE);
             DB db = DB.getInstance(context);
 
             SQLiteDatabase sdb = FtsDbHelper.getInstance(context);
-            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
 
             for (long id : db.message().getMessageFts())
                 try {
@@ -105,6 +105,9 @@ public class WorkerFts extends Worker {
 
             markIndexed(db, ids);
 
+            if (checkpoints)
+                DB.checkpoint(context);
+
             Log.i("FTS indexed=" + indexed);
             return Result.success();
         } catch (Throwable ex) {

app/src/main/res/layout/fragment_options_misc.xml

@@ -640,6 +640,17 @@
                     app:layout_constraintTop_toBottomOf="@id/tvQueriesRemark"
                     app:switchPadding="12dp" />
 
+                <androidx.appcompat.widget.SwitchCompat
+                    android:id="@+id/swCheckpoints"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/title_advanced_checkpoints"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/swWal"
+                    app:switchPadding="12dp" />
+
                 <eu.faircode.email.FixedTextView
                     android:id="@+id/tvSqliteCache"
                     android:layout_width="0dp"
@@ -650,7 +661,7 @@
                     android:textAppearance="@style/TextAppearance.AppCompat.Small"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/swWal" />
+                    app:layout_constraintTop_toBottomOf="@id/swCheckpoints" />
 
                 <SeekBar
                     android:id="@+id/sbSqliteCache"

app/src/main/res/values/strings.xml

@@ -630,6 +630,7 @@
     <string name="title_advanced_debug">Debug mode</string>
     <string name="title_advanced_query_threads">Limit parallel database access</string>
     <string name="title_advanced_wal" translatable="false">WAL</string>
+    <string name="title_advanced_checkpoints" translatable="false">Checkpoints</string>
     <string name="title_advanced_sqlite_cache" translatable="false">Sqlite cache %1$s %% - %2$s</string>
     <string name="title_advanced_modseq" translatable="false">MODSEQ</string>
     <string name="title_advanced_expunge" translatable="false">EXPUNGE</string>