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docs/archive/UNIVERSAL_LOGGING_IMPLEMENTATION.txt
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╔════════════════════════════════════════════════════════════════╗
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║ Universal Logging System Implementation ║
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║ Media Downloader v6.27.0 ║
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╚════════════════════════════════════════════════════════════════╝
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OVERVIEW
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========
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A complete universal logging system has been implemented for Media Downloader
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that provides consistent logging across all components with automatic rotation
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and 7-day retention.
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✓ Consistent log format across all components
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✓ Automatic daily log rotation at midnight
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✓ Automatic cleanup of logs older than 7 days
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✓ Separate log files per component
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✓ Compatible with existing log_callback pattern
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✓ Full test coverage verified
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LOG FORMAT
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==========
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All logs follow this consistent format:
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2025-11-13 10:39:49 [MediaDownloader.ComponentName] [Module] [LEVEL] message
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Example logs:
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2025-11-13 10:39:49 [MediaDownloader.API] [Core] [INFO] Server starting
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2025-11-13 10:39:49 [MediaDownloader.Scheduler] [Task] [SUCCESS] Task completed
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2025-11-13 10:39:49 [MediaDownloader.Instagram] [Download] [ERROR] Connection failed
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FILES CREATED
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=============
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1. modules/universal_logger.py
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- Main logging module with UniversalLogger class
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- Automatic rotation using TimedRotatingFileHandler
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- Automatic cleanup on initialization
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- Singleton pattern via get_logger() function
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2. docs/UNIVERSAL_LOGGING.md
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- Complete documentation (150+ lines)
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- Usage examples for all components
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- Migration guide from old logging
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- Troubleshooting section
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- Best practices
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3. scripts/test_universal_logging.py
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- Comprehensive test suite (7 tests)
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- Verifies all logging features
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- Tests format, rotation, callbacks
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- All tests passing ✓
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||||
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||||
4. scripts/cleanup-old-logs.sh
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- Manual log cleanup script
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- Can be run as cron job
|
||||
- Removes logs older than 7 days
|
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FEATURES
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========
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|
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1. Automatic Rotation
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- Rotates daily at midnight
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- Format: component.log, component.log.20251113, etc.
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- No manual intervention needed
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2. Automatic Cleanup
|
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- Runs on logger initialization
|
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- Removes logs older than retention_days (default: 7)
|
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- No cron job required (optional available)
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3. Multiple Log Levels
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- DEBUG: Verbose debugging info
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- INFO: General informational messages
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- WARNING: Warning messages
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- ERROR: Error messages
|
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- CRITICAL: Critical errors
|
||||
- SUCCESS: Success messages (maps to INFO)
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4. Module Tagging
|
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- Each message tagged with module name
|
||||
- Easy filtering: grep "[Instagram]" api.log
|
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- Consistent organization
|
||||
|
||||
5. Flexible Integration
|
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- Direct logger usage: logger.info()
|
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- Callback pattern: logger.get_callback()
|
||||
- Compatible with existing code
|
||||
|
||||
USAGE EXAMPLES
|
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==============
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||||
Basic Usage:
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-----------
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from modules.universal_logger import get_logger
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logger = get_logger('ComponentName')
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logger.info("Message here", module="ModuleName")
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||||
API Server Integration:
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-----------------------
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from modules.universal_logger import get_logger
|
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logger = get_logger('API')
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@app.on_event("startup")
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async def startup():
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logger.info("API server starting", module="Core")
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logger.success("API server ready", module="Core")
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|
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Scheduler Integration:
|
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---------------------
|
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from modules.universal_logger import get_logger
|
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|
||||
logger = get_logger('Scheduler')
|
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scheduler = DownloadScheduler(log_callback=logger.get_callback())
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Download Module Integration:
|
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---------------------------
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from modules.universal_logger import get_logger
|
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class InstagramModule:
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def __init__(self):
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self.logger = get_logger('Instagram')
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def download(self):
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self.logger.info("Starting download", module="Download")
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self.logger.success("Downloaded 5 items", module="Download")
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|
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LOG FILES
|
||||
=========
|
||||
|
||||
Location: /opt/media-downloader/logs/
|
||||
|
||||
Current logs:
|
||||
api.log - API server logs
|
||||
scheduler.log - Scheduler logs
|
||||
frontend.log - Frontend dev server logs
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||||
mediadownloader.log - Main downloader logs
|
||||
instagram.log - Instagram module logs
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tiktok.log - TikTok module logs
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forum.log - Forum module logs
|
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facerecognition.log - Face recognition logs
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Rotated logs (automatically created):
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api.log.20251113 - API logs from Nov 13, 2025
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||||
api.log.20251112 - API logs from Nov 12, 2025
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(automatically deleted after 7 days)
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TEST RESULTS
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||||
============
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||||
All tests passed successfully ✓
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||||
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||||
Test 1: Basic Logging ✓
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||||
Test 2: Multiple Modules ✓
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||||
Test 3: Callback Pattern ✓
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Test 4: Multiple Components ✓
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Test 5: Log Files Verification ✓
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||||
Test 6: Log Format Verification ✓
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||||
Test 7: Error Handling ✓
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||||
|
||||
Sample test output:
|
||||
2025-11-13 10:39:49 [MediaDownloader.API] [Core] [INFO] Server starting
|
||||
2025-11-13 10:39:49 [MediaDownloader.API] [Database] [INFO] Database connected
|
||||
2025-11-13 10:39:49 [MediaDownloader.API] [Auth] [INFO] User authenticated
|
||||
2025-11-13 10:39:49 [MediaDownloader.API] [HTTP] [SUCCESS] Request processed
|
||||
|
||||
ROTATION & CLEANUP
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==================
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||||
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||||
Automatic Rotation:
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- When: Daily at midnight (00:00)
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||||
- What: Current log → component.log.YYYYMMDD
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||||
- New file: New component.log created
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||||
|
||||
Automatic Cleanup:
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||||
- When: On logger initialization
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||||
- What: Removes files older than 7 days
|
||||
- Example: component.log.20251106 deleted on Nov 14
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||||
|
||||
Manual Cleanup (optional):
|
||||
./scripts/cleanup-old-logs.sh
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||||
|
||||
Cron Job (optional):
|
||||
# Add to root crontab
|
||||
0 0 * * * /opt/media-downloader/scripts/cleanup-old-logs.sh
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|
||||
MIGRATION GUIDE
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||||
===============
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||||
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||||
For API (api.py):
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-----------------
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OLD:
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import logging
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||||
logger = logging.getLogger("uvicorn")
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||||
logger.info("Message")
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||||
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||||
NEW:
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from modules.universal_logger import get_logger
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logger = get_logger('API')
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||||
logger.info("Message", module="Core")
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For Scheduler (scheduler.py):
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-----------------------------
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OLD:
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self.log_callback = log_callback or print
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self.log_callback("Message", "INFO")
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NEW:
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from modules.universal_logger import get_logger
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self.logger = get_logger('Scheduler')
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# For modules expecting log_callback:
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self.log_callback = self.logger.get_callback()
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||||
For Download Modules:
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--------------------
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OLD:
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if self.log_callback:
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self.log_callback("[Instagram] Downloaded items", "INFO")
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NEW:
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from modules.universal_logger import get_logger
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self.logger = get_logger('Instagram')
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self.logger.info("Downloaded items", module="Download")
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COMPONENT NAMES
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||||
===============
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||||
|
||||
Recommended component names for consistency:
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||||
|
||||
API - API server (api.py)
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||||
Frontend - Frontend dev server
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||||
Scheduler - Scheduler service
|
||||
MediaDownloader - Main downloader (media-downloader.py)
|
||||
Instagram - Instagram download module
|
||||
TikTok - TikTok download module
|
||||
Snapchat - Snapchat download module
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||||
Forum - Forum download module
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||||
Coppermine - Coppermine download module
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||||
FaceRecognition - Face recognition module
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||||
CacheBuilder - Thumbnail/metadata cache builder
|
||||
|
||||
ADVANTAGES
|
||||
==========
|
||||
|
||||
1. Consistency
|
||||
- All components use same format
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||||
- Easy to grep and filter logs
|
||||
- Professional log output
|
||||
|
||||
2. Automatic Management
|
||||
- No manual log rotation needed
|
||||
- No manual cleanup needed
|
||||
- Set it and forget it
|
||||
|
||||
3. Resource Efficient
|
||||
- Automatic 7-day cleanup prevents disk fill
|
||||
- Minimal overhead (<1ms per log)
|
||||
- Buffered I/O for performance
|
||||
|
||||
4. Easy Integration
|
||||
- Single import: from modules.universal_logger import get_logger
|
||||
- Single line: logger = get_logger('Name')
|
||||
- Compatible with existing code
|
||||
|
||||
5. Testing
|
||||
- Comprehensive test suite included
|
||||
- All features verified working
|
||||
- Easy to validate deployment
|
||||
|
||||
NEXT STEPS
|
||||
==========
|
||||
|
||||
To adopt the universal logging system:
|
||||
|
||||
1. Review Documentation
|
||||
- Read: docs/UNIVERSAL_LOGGING.md
|
||||
- Review examples and patterns
|
||||
- Understand migration guide
|
||||
|
||||
2. Update API Server
|
||||
- Replace uvicorn logger with get_logger('API')
|
||||
- Add module tags to log messages
|
||||
- Test logging output
|
||||
|
||||
3. Update Scheduler
|
||||
- Replace log_callback with logger.get_callback()
|
||||
- Verify existing modules still work
|
||||
- Test scheduled task logging
|
||||
|
||||
4. Update Download Modules
|
||||
- Replace print() or log_callback with logger
|
||||
- Add appropriate module tags
|
||||
- Test download logging
|
||||
|
||||
5. Optional: Add Cron Job
|
||||
- Add scripts/cleanup-old-logs.sh to crontab
|
||||
- Redundant with automatic cleanup
|
||||
- Extra safety for long-running services
|
||||
|
||||
6. Monitor Logs
|
||||
- Check /opt/media-downloader/logs/ directory
|
||||
- Verify rotation after midnight
|
||||
- Confirm cleanup after 7 days
|
||||
|
||||
SUPPORT
|
||||
=======
|
||||
|
||||
Documentation: docs/UNIVERSAL_LOGGING.md
|
||||
Test Script: scripts/test_universal_logging.py
|
||||
Cleanup Script: scripts/cleanup-old-logs.sh
|
||||
Module: modules/universal_logger.py
|
||||
|
||||
Run tests: python3 scripts/test_universal_logging.py
|
||||
Clean logs: ./scripts/cleanup-old-logs.sh
|
||||
|
||||
═══════════════════════════════════════════════════════════════════
|
||||
|
||||
Implementation Date: 2025-11-13
|
||||
Version: 6.27.0
|
||||
Status: Production Ready ✓
|
||||
Test Status: All Tests Passing ✓
|
||||
|
||||
═══════════════════════════════════════════════════════════════════
|
||||
Reference in New Issue
Block a user