Use specific remote config for slow database notification.

app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java

@@ -511,8 +511,9 @@ public class ApplicationContext extends Application implements AppForegroundObse
   private void initializeTracer() {
     if (RemoteConfig.internalUser()) {
       Tracer.getInstance().setMaxBufferSize(35_000);
-      SQLiteDatabase.setSlowWriteLoggingEnabled(true);
     }
+
+    SQLiteDatabase.setSlowWriteLoggingEnabled(RemoteConfig.slowDatabaseNotifications());
   }
 
   private void initializePeriodicTasks() {

app/src/main/java/org/thoughtcrime/securesms/database/SlowTransactionInternalNotifier.kt

@@ -26,7 +26,8 @@ import kotlin.time.Duration.Companion.milliseconds
 import kotlin.time.Duration.Companion.minutes
 
 /**
- * Internal-user-only notifier that surfaces SQLite write-lock contention.
+ * Notifier that surfaces SQLite write-lock contention. Gated behind the
+ * [RemoteConfig.slowDatabaseNotifications] flag.
  */
 object SlowTransactionInternalNotifier {
 
@@ -41,7 +42,7 @@ object SlowTransactionInternalNotifier {
 
   @JvmStatic
   fun onSlowEvent() {
-    if (!RemoteConfig.internalUser) {
+    if (!RemoteConfig.slowDatabaseNotifications) {
       return
     }
 

app/src/main/java/org/thoughtcrime/securesms/util/RemoteConfig.kt

@@ -11,6 +11,7 @@ import org.signal.core.util.gibiBytes
 import org.signal.core.util.kibiBytes
 import org.signal.core.util.logging.Log
 import org.signal.core.util.mebiBytes
+import org.thoughtcrime.securesms.database.SQLiteDatabase
 import org.thoughtcrime.securesms.dependencies.AppDependencies
 import org.thoughtcrime.securesms.groups.SelectionLimits
 import org.thoughtcrime.securesms.jobs.RemoteConfigRefreshJob
@@ -693,6 +694,16 @@ object RemoteConfig {
     hotSwappable = true
   )
 
+  /** Whether we log and surface notifications for slow database transactions/queries. */
+  @JvmStatic
+  @get:JvmName("slowDatabaseNotifications")
+  val slowDatabaseNotifications: Boolean by remoteBoolean(
+    key = "android.slowDatabaseNotifications",
+    defaultValue = false,
+    hotSwappable = true,
+    onChangeListener = { SQLiteDatabase.setSlowWriteLoggingEnabled(it.newValue.asBoolean(false)) }
+  )
+
   /** How often we allow an automatic session reset.  */
   @JvmStatic
   @get:JvmName("automaticSessionResetIntervalSeconds")