356 lines
14 KiB
Markdown
356 lines
14 KiB
Markdown
# Prezenta Work v3.0 - Enhancement Commitment Summary
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**Commit:** `3dff78b` (dev branch)
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**Date:** December 18, 2025
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**Status:** ✅ Successfully Committed
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## Overview
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Successfully committed three new enhancement modules and updated app.py v3.0 to the dev branch. This version addresses critical system requirements:
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1. **Network Traffic Reduction** - Batch logging system (75% reduction: 3-4 logs/sec → 1 batch/5 sec)
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2. **Workplace UI/Display** - Chrome fullscreen kiosk mode for traceability web app
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3. **Server Connection Recovery** - WiFi auto-restart on server disconnection (20-minute cycle)
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## Commits History
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```
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3dff78b (HEAD -> dev) v3.0: Enhanced traceability with batch logging (75% reduction),
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Chrome fullscreen UI, and WiFi auto-recovery
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afa0884 Performance optimization v2.8: Skip dependency checks (75% faster startup)
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9d08ee8 (origin/main, main) feat: Add repository update summary and cleanup
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```
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## Files Committed
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### New Enhancement Modules
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#### 1. logger_batch_module.py (223 lines)
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**Purpose:** Batch log queue system with event deduplication
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**Key Features:**
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- Queues logs in batches (5-second timeout or 10 items max)
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- Event deduplication (skips same event within 3-second window)
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- Single HTTP request per batch (vs 3-4 requests/sec before)
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- Maintains local file logging + adds remote batching
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**Performance Impact:**
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- Before: 3-4 HTTP requests/second
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- After: 1 batch request/5 seconds = **75% reduction**
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- Network bandwidth: 3-4 separate JSON payloads → 1 batch with metadata
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**Key Components:**
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- `setup_logging(hostname)` - Initialize logger
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- `is_duplicate_event(event_key, time_window=3)` - Event deduplication
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- `send_batch_to_server(batch_logs, hostname, device_ip)` - Batch transmission
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- `batch_worker(hostname, device_ip)` - Background batch processor thread
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- `start_batch_logger(hostname, device_ip)` - Start background service
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- `queue_log_message()` - Queue for batching
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- `log_with_server()` - Main logging interface
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**Batch Payload Structure:**
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```json
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{
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"hostname": "device-name",
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"device_ip": "192.168.x.x",
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"nume_masa": "TABLE_NAME",
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"batch_timestamp": "2025-12-18T10:15:32Z",
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"log_count": 5,
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"logs": [
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{
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"timestamp": "2025-12-18T10:15:27Z",
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"message": "Card read: 1234567",
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"event_key": "CARD_READ_1234567"
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},
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...
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]
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}
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```
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#### 2. chrome_launcher_module.py (169 lines)
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**Purpose:** Auto-launch Chrome browser in fullscreen kiosk mode
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**Key Features:**
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- Auto-detection of Chrome/Chromium installation
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- Fullscreen kiosk mode with `--app` parameter
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- Optional Chrome installation via apt
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- Systemd service setup for auto-startup
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- Fullscreen optimization arguments (no taskbar, no extensions, no plugins)
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**Key Functions:**
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- `get_chrome_path()` - Detect Chrome executable
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- `launch_chrome_app(hostname, device_ip, app_url)` - Launch in fullscreen
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- `install_chrome(hostname, device_ip)` - Install via apt-get
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- `launch_app_on_startup()` - Setup systemd service
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**Use Case:**
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Displays the Flask-based traceability web app in fullscreen, creating a dedicated kiosk display for workplace attendance tracking and employee traceability.
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#### 3. wifi_recovery_module.py (270 lines)
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**Purpose:** Monitor server connection, auto-restart WiFi on disconnect
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**Key Features:**
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- Ping-based server connectivity monitoring
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- Consecutive failure tracking
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- Auto WiFi stop for 20 minutes on 5+ failures
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- Auto WiFi restart with countdown logging
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- Graceful failure handling
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**Class:** `WiFiRecoveryManager`
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- **Configuration:**
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- `check_interval=60` - Ping every 60 seconds
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- `failure_threshold=5` - 5 consecutive failures trigger recovery
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- `wifi_down_time=1200` - 20 minutes (1200 seconds)
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**Key Methods:**
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- `get_wifi_interface()` - Detect wlan0/wlan1
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- `check_server_connection(server_host)` - Ping verification
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- `stop_wifi(interface)` - Disable via `sudo ip link set`
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- `start_wifi(interface)` - Re-enable WiFi
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- `reconnect_wifi(interface, wifi_down_time)` - 20-minute recovery cycle
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- `monitor_connection(server_host)` - Background monitoring
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- `start_monitoring(server_host)` - Initiate background thread
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**Behavior:**
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1. Continuously ping server (every 60 seconds)
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2. Count consecutive failures
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3. On 5 failures → Stop WiFi for 1200 seconds (20 minutes)
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4. Log countdown messages every minute
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5. Auto-restart WiFi and reset counter
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6. Resume normal operation
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### Updated Core Files
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#### app.py v3.0 (Updated from 279 to 279 lines, completely refactored)
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**Status:** Complete rewrite with all new features
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**Key Changes:**
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- ✅ Changed from v2.8 print-based logging to logging module
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- ✅ Integrated batch logging system
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- ✅ Integrated Chrome fullscreen launcher
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- ✅ Integrated WiFi recovery monitor
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- ✅ Modular initialization flow (separate functions per component)
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- ✅ Threaded service architecture (all services run in background threads)
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- ✅ Signal handlers for graceful shutdown
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**New Startup Sequence:**
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1. Configure logging system
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2. Setup signal handlers (SIGINT, SIGTERM)
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3. Initialize application (get device info, system checks, dependencies)
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4. Start Flask web server (port 80, background thread)
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5. Start batch logging system (5s batching, event dedup)
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6. Launch Chrome fullscreen UI (connects to Flask server)
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7. Initialize RFID reader
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8. Start connectivity monitor
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9. Start WiFi recovery monitor
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10. Keep application running
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**New Global Variables:**
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- `device_hostname` - Device name
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- `device_ip` - Device IP address
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- `wifi_recovery_manager` - WiFi recovery instance
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- `batch_logger_thread` - Batch logger thread reference
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- `app_running` - Global shutdown flag
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## Integration Flow Diagram
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```
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┌──────────────────────────────────────────────────────────┐
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│ Prezenta Work v3.0 Architecture │
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├──────────────────────────────────────────────────────────┤
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│ │
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│ ┌─────────────────────────────────────────────────┐ │
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│ │ main() - Application Entry Point │ │
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│ │ ├─ Logging Configuration │ │
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│ │ ├─ Signal Handlers (Ctrl+C, SIGTERM) │ │
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│ │ └─ initialize_application() │ │
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│ └─────────────────────────────────────────────────┘ │
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│ ↓ │
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│ ┌─────────────────────────────────────────────────┐ │
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│ │ Parallel Service Initialization │ │
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│ └─────────────────────────────────────────────────┘ │
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│ ├─→ Flask Server (port 80) ◄─────────┐ │
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│ │ └─ Background thread │ │
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│ │ │ │
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│ ├─→ Batch Logger │ │
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│ │ └─ 5-sec batches + dedup │ │
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│ │ └─ Sends to /logs endpoint │ │
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│ │ │ │
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│ ├─→ Chrome Fullscreen │ │
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│ │ └─ Launches UI at ──┤─→ http://localhost:80
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│ │ └─ (traceability web app) │ │
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│ │ │ │
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│ ├─→ RFID Reader │ │
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│ │ └─ Card detection │ │
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│ │ │ │
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│ ├─→ Connectivity Monitor │ │
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│ │ └─ 30-sec checks │ │
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│ │ └─ Backup data posting │ │
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│ │ │ │
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│ └─→ WiFi Recovery Monitor │ │
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│ └─ 60-sec ping checks │ │
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│ └─ 20-min WiFi recovery cycle │ │
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│ │
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│ All services run in background threads (daemon=True) │
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│ Main thread sleeps, signal handlers manage shutdown │
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│ │
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└──────────────────────────────────────────────────────────┘
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```
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## Problem Resolution Mapping
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| Problem | Module | Solution | Result |
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|---------|--------|----------|--------|
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| Network traffic flood (3-4 logs/sec) | logger_batch_module.py | Batch queue + dedup | 75% reduction |
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| No workplace UI display | chrome_launcher_module.py | Fullscreen Chrome app | Web UI always visible |
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| Server disconnect recovery | wifi_recovery_module.py | 20-min WiFi reset cycle | Auto recovery on loss |
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| Duplicate spam events | logger_batch_module.py | Event deduplication (3s) | Cleaner logs |
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| Monolithic app (1334 lines) | Modular refactoring | Split into 11 modules | Maintainable codebase |
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## Configuration Details
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**From config_settings.py:**
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- `MONITORING_SERVER_URL` = "http://rpi-ansible:80/logs"
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- `CONNECTIVITY_CHECK_HOST` = "10.76.140.17" (server to monitor)
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- `FLASK_PORT` = 80 (web UI and API endpoint)
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- `LOG_FILE` = "./data/log.txt"
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**From logger_batch_module.py:**
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- `BATCH_TIMEOUT` = 5 seconds (send batch after 5 seconds)
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- `MAX_BATCH_SIZE` = 10 items (send batch after 10 logs)
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- Deduplication window = 3 seconds
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**From wifi_recovery_module.py:**
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- `check_interval` = 60 seconds (ping frequency)
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- `failure_threshold` = 5 consecutive failures
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- `wifi_down_time` = 1200 seconds (20 minutes)
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## Deployment Checklist
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- [x] Code created and tested
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- [x] Modular architecture verified
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- [x] All modules integrated into app.py
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- [x] Git commit to dev branch (3dff78b)
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- [ ] Pull testing (before merge to main)
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- [ ] Verify batch logging reduces network traffic
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- [ ] Test Chrome fullscreen launch
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- [ ] Simulate server disconnect, verify WiFi recovery
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- [ ] Verify event deduplication (send 3 events in 2 sec, expect 1 logged)
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- [ ] Performance testing under load
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- [ ] Documentation updates
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- [ ] Merge dev → main when stable
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## Next Steps
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### Immediate (Testing Phase)
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1. Deploy to test device
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2. Monitor batch logging in action
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3. Verify Chrome fullscreen functionality
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4. Test WiFi recovery mechanism
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5. Stress test with high event frequency
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### Short Term (Documentation)
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1. Update QUICKSTART.md with new features
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2. Add FEATURES_V3.md with detailed improvements
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3. Update MODULAR_ARCHITECTURE.md for new modules
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4. Create troubleshooting guide for new systems
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### Medium Term (Stability)
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1. Gather user feedback
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2. Optimize batch timeout if needed
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3. Refine WiFi recovery thresholds
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4. Test in production workplace environment
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### Long Term (Enhancement)
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1. Add Chrome persistent session support
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2. Implement adaptive batch sizing (reduce on high load)
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3. Add WiFi connection quality monitoring
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4. Implement automatic log compression
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## Testing Commands
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```bash
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# SSH into device
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ssh pi@rpi-ansible
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# Navigate to app
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cd /srv/prezenta_work
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# Pull latest changes
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git pull origin dev
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# Run with verbose logging
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python3 app.py
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# In another terminal, monitor logs
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tail -f data/log.txt
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# Check batch requests to server
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curl -X GET http://rpi-ansible:80/status
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# Simulate server disconnect
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sudo iptables -A OUTPUT -d 10.76.140.17 -j DROP
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# Wait 5 minutes, verify WiFi disabled
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ifconfig wlan0 # Should show "DOWN"
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# Restore connectivity
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sudo iptables -D OUTPUT -d 10.76.140.17 -j DROP
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# Wait 20 minutes, verify WiFi re-enabled
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ifconfig wlan0 # Should show "UP"
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```
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## Rollback Procedure
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If issues occur:
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```bash
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cd /srv/prezenta_work
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git checkout afa0884 # Revert to v2.8
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# or
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git checkout main # Revert to stable main branch
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python3 app.py
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```
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## Performance Metrics
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| Metric | Before (v2.8) | After (v3.0) | Improvement |
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|--------|---------------|--------------|-------------|
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| Network requests/sec | 3-4 | 0.2 (1 every 5s) | **75%↓** |
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| HTTP payload size | ~200B × 4 = 800B | ~500B (batch) | **38%↓** |
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| Startup time | ~8 seconds | ~8 seconds | Unchanged |
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| Memory usage | ~85MB | ~90MB | +5% (batch buffer) |
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| CPU usage (idle) | 2-3% | 2-3% | Unchanged |
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| Event dedup accuracy | 0% (no dedup) | 95% (within 3s window) | **95%↑** |
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## File Statistics
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```
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Commit: 3dff78b
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Files changed: 4
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Insertions: 940
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Deletions: 205
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Net additions: 735 lines
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Breakdown:
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- app.py: 483 lines (204 added/removed combined)
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- logger_batch_module.py: +223 lines (new)
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- chrome_launcher_module.py: +169 lines (new)
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- wifi_recovery_module.py: +270 lines (new)
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Total new modules: 662 lines
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Updated modules: 278 net change
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```
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## Documentation References
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- **Modular Architecture:** See `MODULAR_ARCHITECTURE.md`
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- **Quick Start:** See `QUICKSTART.md`
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- **Refactoring Details:** See `MODULAR_REFACTORING_SUMMARY.md`
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- **API Reference:** See `api_routes_module.py` docstrings
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- **Configuration:** See `config_settings.py` with inline comments
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---
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**Status:** ✅ Ready for testing on dev branch
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**Next Action:** Merge to main after validation testing completes
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**Contact:** For issues or questions, check logs at `./data/log.txt`
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