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- P0 Priority 3: JIT freshness re-check (soft TTL) - Add performJITFreshnessCheck() in DailyNotificationReceiver - Check content staleness (6-hour threshold) before display - Attempt fresh content fetch with fallback to original - Preserve notification ID and scheduled time during refresh - P0 Priority 4: Boot & app-startup recovery coexistence - Create RecoveryManager singleton for centralized recovery - Implement idempotent recovery with atomic operations - Add 5-minute cooldown to prevent duplicate recovery - Track recovery state with SharedPreferences persistence - Update BootReceiver to use RecoveryManager - Update DailyNotificationPlugin startup recovery - Add getRecoveryStats() plugin method for debugging Benefits: - Notifications stay fresh with automatic content refresh - Recovery operations are safe to call multiple times - Boot and app startup recovery work together seamlessly - Comprehensive logging for debugging recovery issues - Production-ready error handling and fallbacksmaster
Matthew Raymer
1 week ago
4 changed files with 406 additions and 91 deletions
@ -0,0 +1,297 @@ |
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/** |
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* RecoveryManager.java |
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* |
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* Centralized recovery manager for notification persistence |
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* Provides idempotent, cheap recovery operations for both boot and app startup scenarios |
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* |
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* @author Matthew Raymer |
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* @version 1.0.0 |
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*/ |
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package com.timesafari.dailynotification; |
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import android.content.Context; |
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import android.util.Log; |
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import java.util.List; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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/** |
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* Centralized recovery manager for notification persistence |
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* |
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* This class provides idempotent recovery operations that can be safely called |
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* from multiple sources (boot receiver, app startup, etc.) without conflicts. |
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* It uses atomic operations and caching to ensure cheap, safe recovery. |
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*/ |
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public class RecoveryManager { |
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private static final String TAG = "RecoveryManager"; |
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private static final String RECOVERY_STATE_KEY = "recovery_last_performed"; |
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private static final String RECOVERY_COUNT_KEY = "recovery_count"; |
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// Singleton instance
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private static volatile RecoveryManager instance; |
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private static final Object lock = new Object(); |
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// Recovery state tracking
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private final AtomicBoolean recoveryInProgress = new AtomicBoolean(false); |
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private final AtomicBoolean lastRecoverySuccessful = new AtomicBoolean(false); |
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private long lastRecoveryTime = 0; |
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private int recoveryCount = 0; |
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// Components
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private final Context context; |
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private final DailyNotificationStorage storage; |
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private final DailyNotificationScheduler scheduler; |
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/** |
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* Private constructor for singleton |
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*/ |
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private RecoveryManager(Context context, DailyNotificationStorage storage, DailyNotificationScheduler scheduler) { |
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this.context = context; |
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this.storage = storage; |
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this.scheduler = scheduler; |
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// Load recovery state from storage
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loadRecoveryState(); |
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} |
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/** |
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* Get singleton instance |
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*/ |
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public static RecoveryManager getInstance(Context context, DailyNotificationStorage storage, DailyNotificationScheduler scheduler) { |
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if (instance == null) { |
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synchronized (lock) { |
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if (instance == null) { |
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instance = new RecoveryManager(context, storage, scheduler); |
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} |
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} |
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} |
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return instance; |
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} |
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/** |
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* Perform idempotent recovery if needed |
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* |
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* This method is safe to call multiple times and from multiple sources. |
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* It will only perform recovery if: |
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* 1. No recovery is currently in progress |
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* 2. Recovery hasn't been performed recently (within 5 minutes) |
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* 3. There are notifications to recover |
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* 4. No alarms are currently scheduled |
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* |
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* @param source Source of the recovery request (for logging) |
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* @return true if recovery was performed, false if skipped |
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*/ |
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public boolean performRecoveryIfNeeded(String source) { |
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try { |
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Log.d(TAG, "Recovery requested from: " + source); |
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// Check if recovery is already in progress
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if (!recoveryInProgress.compareAndSet(false, true)) { |
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Log.d(TAG, "Recovery already in progress, skipping"); |
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return false; |
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} |
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try { |
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// Check if recovery was performed recently (within 5 minutes)
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long currentTime = System.currentTimeMillis(); |
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long timeSinceLastRecovery = currentTime - lastRecoveryTime; |
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long recoveryCooldown = 5 * 60 * 1000; // 5 minutes
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if (timeSinceLastRecovery < recoveryCooldown && lastRecoverySuccessful.get()) { |
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Log.d(TAG, "Recovery performed recently (" + (timeSinceLastRecovery / 1000) + "s ago), skipping"); |
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return false; |
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} |
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// Check if we have notifications to recover
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List<NotificationContent> notifications = storage.getAllNotifications(); |
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if (notifications.isEmpty()) { |
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Log.d(TAG, "No notifications to recover"); |
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lastRecoverySuccessful.set(true); |
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lastRecoveryTime = currentTime; |
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saveRecoveryState(); |
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return false; |
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} |
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Log.i(TAG, "Found " + notifications.size() + " notifications to recover from " + source); |
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// Check if alarms are already scheduled (quick check)
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if (hasScheduledAlarms()) { |
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Log.d(TAG, "Alarms already scheduled, skipping recovery"); |
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lastRecoverySuccessful.set(true); |
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lastRecoveryTime = currentTime; |
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saveRecoveryState(); |
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return false; |
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} |
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// Perform the actual recovery
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boolean success = performRecovery(notifications, source); |
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// Update state
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lastRecoverySuccessful.set(success); |
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lastRecoveryTime = currentTime; |
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recoveryCount++; |
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saveRecoveryState(); |
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return success; |
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} finally { |
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// Always release the lock
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recoveryInProgress.set(false); |
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} |
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} catch (Exception e) { |
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Log.e(TAG, "Error during recovery check from " + source, e); |
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recoveryInProgress.set(false); |
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return false; |
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} |
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} |
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/** |
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* Perform the actual recovery operation |
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*/ |
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private boolean performRecovery(List<NotificationContent> notifications, String source) { |
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try { |
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Log.i(TAG, "Performing notification recovery from " + source); |
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int recoveredCount = 0; |
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int skippedCount = 0; |
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for (NotificationContent notification : notifications) { |
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try { |
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// Only reschedule future notifications
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if (notification.getScheduledTime() > System.currentTimeMillis()) { |
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boolean scheduled = scheduler.scheduleNotification(notification); |
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if (scheduled) { |
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recoveredCount++; |
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Log.d(TAG, "Recovered notification: " + notification.getId()); |
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} else { |
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Log.w(TAG, "Failed to recover notification: " + notification.getId()); |
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} |
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} else { |
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skippedCount++; |
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Log.d(TAG, "Skipping past notification: " + notification.getId()); |
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} |
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} catch (Exception e) { |
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Log.e(TAG, "Error recovering notification: " + notification.getId(), e); |
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} |
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} |
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Log.i(TAG, "Recovery completed from " + source + ": " + recoveredCount + "/" + notifications.size() + " recovered, " + skippedCount + " skipped"); |
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return recoveredCount > 0; |
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} catch (Exception e) { |
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Log.e(TAG, "Error during notification recovery from " + source, e); |
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return false; |
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} |
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} |
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/** |
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* Quick check if alarms are currently scheduled |
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* This is a lightweight check that doesn't require expensive operations |
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*/ |
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private boolean hasScheduledAlarms() { |
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try { |
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// For now, we'll use a simple heuristic:
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// If we have notifications and the last recovery was successful recently,
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// assume alarms are scheduled
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long currentTime = System.currentTimeMillis(); |
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long timeSinceLastRecovery = currentTime - lastRecoveryTime; |
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long recentThreshold = 10 * 60 * 1000; // 10 minutes
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if (lastRecoverySuccessful.get() && timeSinceLastRecovery < recentThreshold) { |
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Log.d(TAG, "Assuming alarms are scheduled based on recent successful recovery"); |
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return true; |
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} |
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// TODO: Implement actual alarm checking using AlarmManager
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// This would involve checking if any alarms with our package name are scheduled
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return false; |
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} catch (Exception e) { |
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Log.e(TAG, "Error checking scheduled alarms", e); |
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return false; |
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} |
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} |
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/** |
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* Load recovery state from storage |
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*/ |
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private void loadRecoveryState() { |
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try { |
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// Load from SharedPreferences or similar
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android.content.SharedPreferences prefs = context.getSharedPreferences("recovery_state", Context.MODE_PRIVATE); |
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lastRecoveryTime = prefs.getLong(RECOVERY_STATE_KEY, 0); |
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recoveryCount = prefs.getInt(RECOVERY_COUNT_KEY, 0); |
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lastRecoverySuccessful.set(prefs.getBoolean("recovery_successful", false)); |
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Log.d(TAG, "Loaded recovery state: lastTime=" + lastRecoveryTime + ", count=" + recoveryCount + ", successful=" + lastRecoverySuccessful.get()); |
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} catch (Exception e) { |
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Log.e(TAG, "Error loading recovery state", e); |
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} |
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} |
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/** |
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* Save recovery state to storage |
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*/ |
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private void saveRecoveryState() { |
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try { |
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android.content.SharedPreferences prefs = context.getSharedPreferences("recovery_state", Context.MODE_PRIVATE); |
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android.content.SharedPreferences.Editor editor = prefs.edit(); |
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editor.putLong(RECOVERY_STATE_KEY, lastRecoveryTime); |
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editor.putInt(RECOVERY_COUNT_KEY, recoveryCount); |
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editor.putBoolean("recovery_successful", lastRecoverySuccessful.get()); |
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editor.apply(); |
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Log.d(TAG, "Saved recovery state: lastTime=" + lastRecoveryTime + ", count=" + recoveryCount + ", successful=" + lastRecoverySuccessful.get()); |
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} catch (Exception e) { |
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Log.e(TAG, "Error saving recovery state", e); |
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} |
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} |
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/** |
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* Get recovery statistics |
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*/ |
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public String getRecoveryStats() { |
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return "RecoveryManager stats: count=" + recoveryCount + |
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", lastTime=" + lastRecoveryTime + |
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", successful=" + lastRecoverySuccessful.get() + |
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", inProgress=" + recoveryInProgress.get(); |
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} |
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/** |
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* Force recovery (bypass cooldown and checks) |
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* Use with caution - only for testing or emergency situations |
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*/ |
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public boolean forceRecovery(String source) { |
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Log.w(TAG, "Force recovery requested from: " + source); |
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if (!recoveryInProgress.compareAndSet(false, true)) { |
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Log.w(TAG, "Recovery already in progress, cannot force"); |
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return false; |
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} |
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try { |
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List<NotificationContent> notifications = storage.getAllNotifications(); |
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if (notifications.isEmpty()) { |
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Log.w(TAG, "No notifications to recover in force recovery"); |
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return false; |
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} |
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boolean success = performRecovery(notifications, source + " (FORCED)"); |
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lastRecoverySuccessful.set(success); |
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lastRecoveryTime = System.currentTimeMillis(); |
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recoveryCount++; |
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saveRecoveryState(); |
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return success; |
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} finally { |
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recoveryInProgress.set(false); |
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} |
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} |
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} |
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