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Phase 1 Implementation Summary

Overview

Phase 1 of the SageUtils Logging Improvement Plan has been successfully completed. This phase established the logging infrastructure and prepared the foundation for migrating away from print statements and direct logging calls.

Completed Tasks

✅ 1. Created utils/logger.py

Location: /home/ai/programs/comfyui/custom_nodes/comfyui_sageutils/utils/logger.py

A comprehensive logging module providing:

  • get_logger(name) - Get hierarchical logger instances
  • configure_logging(level, handler) - Configure SageUtils logger
  • configure_third_party_logging() - Quiet chatty libraries
  • get_sageutils_logger() - Convenience function for root logger
  • set_log_level(level) - Dynamically change log level
  • get_log_level() - Query current log level

Features:

  • Hierarchical logger names (e.g., SageUtils.helpers, SageUtils.routes.cache)
  • Environment variable support (SAGEUTILS_LOG_LEVEL)
  • Isolated from ComfyUI's logging (no propagation)
  • Third-party library logging configuration (httpx, urllib3, ollama, etc.)
  • Configurable log levels: DEBUG, INFO, WARNING, ERROR, CRITICAL
  • Standard format: [SageUtils.module] LEVEL: message

✅ 2. Updated __init__.py

Location: /home/ai/programs/comfyui/custom_nodes/comfyui_sageutils/__init__.py

Changes made:

  • Imported and initialized SageUtils logging infrastructure
  • Configured logger early in initialization process
  • Replaced direct logging.warning() calls with SageUtils logger
  • Removed commented-out logging.basicConfig() line
  • Added logger for 'init' module

Result: SageUtils now uses its own logging system from the start of initialization.

✅ 3. Created Test Suite

Location: /home/ai/programs/comfyui/custom_nodes/comfyui_sageutils/tests/test_logger_simple.py

Comprehensive standalone test covering:

  • Basic logger functionality
  • Configuration options
  • Log level management
  • Log output formatting
  • Hierarchical logger behavior
  • Third-party library configuration
  • Environment variable support

Test Results: All 7 test groups passed (31 assertions)

Additional test files:

  • tests/test_logger.py - Pytest-based test suite (for CI/CD)
  • tests/demo_logger.py - Interactive demonstration script

✅ 4. Created Documentation

Location: /home/ai/programs/comfyui/custom_nodes/comfyui_sageutils/docs/LOGGING.md

Comprehensive guide covering:

  • Quick start guide with code examples
  • Logger naming conventions
  • When to use each log level (DEBUG, INFO, WARNING, ERROR, CRITICAL)
  • Configuration options (environment variables, programmatic)
  • Best practices (replacing print, appropriate levels, context, exceptions)
  • Migration guide from print statements and direct logging calls
  • Troubleshooting common issues
  • Real-world examples from various modules

✅ 5. Updated README

Location: /home/ai/programs/comfyui/custom_nodes/comfyui_sageutils/README.md

Added new "Logging Configuration" section explaining:

  • How to set log level via environment variable
  • Available log levels
  • Log prefix format
  • Link to developer documentation

✅ 6. Validation & Testing

Syntax Validation:

✓ utils/logger.py - No syntax errors
✓ __init__.py - No syntax errors
✓ tests/test_logger_simple.py - No syntax errors
✓ tests/demo_logger.py - No syntax errors

Test Execution:

✓ All 7 test groups passed
✓ 31 assertions successful
✓ No failures

Demo Execution:

✓ INFO level demo - Shows INFO+ messages
✓ DEBUG level demo - Shows all messages including DEBUG
✓ Proper formatting with [SageUtils.*] prefix
✓ Environment variable respected

Files Created/Modified

New Files (5)

  1. utils/logger.py - Core logging infrastructure
  2. tests/test_logger_simple.py - Standalone test suite
  3. tests/test_logger.py - Pytest test suite
  4. tests/demo_logger.py - Interactive demonstration
  5. docs/LOGGING.md - Developer documentation

Modified Files (2)

  1. __init__.py - Initialize logging system
  2. README.md - Add logging configuration section

Planning Documents (1)

  1. docs/LOGGING_IMPROVEMENT_PLAN.md - Complete improvement plan

Logging System Features

Hierarchical Naming

logger = get_logger('helpers')           # [SageUtils.helpers]
logger = get_logger('routes.cache')      # [SageUtils.routes.cache]
logger = get_logger('nodes.util')        # [SageUtils.nodes.util]

Environment Variable Control

SAGEUTILS_LOG_LEVEL=DEBUG python main.py     # Show all messages
SAGEUTILS_LOG_LEVEL=WARNING python main.py   # Only warnings/errors
python main.py                                # Default: INFO level

Clean Output Format

[SageUtils.helpers] INFO: Processing model data...
[SageUtils.routes.cache] DEBUG: Cache route called
[SageUtils.nodes.util] WARNING: Model not found, using default

Third-Party Integration

Automatically configures logging for chatty libraries:

  • httpx → WARNING
  • urllib3 → WARNING
  • ollama → ERROR
  • lmstudio → ERROR
  • asyncio → WARNING

Next Steps: Phase 2

Ready to proceed with Phase 2: Core Utilities Migration

Priority order:

  1. utils/helpers.py - 20+ print statements
  2. utils/model_info.py - 10+ print statements
  3. utils/helpers_civitai.py - Update to use SageUtils logger
  4. utils/llm_wrapper.py - Update to use SageUtils logger

Migration approach:

  • Replace print statements with appropriate log levels
  • Update existing logging calls to use SageUtils logger
  • Add logger import at top of file: logger = get_logger('module_name')
  • Test each file after migration
  • Verify log output at different levels

Benefits Achieved

✅ Separation - SageUtils logging isolated from ComfyUI ✅ Identification - All logs clearly prefixed with [SageUtils.*] ✅ Control - Environment variable for easy level adjustment ✅ Hierarchy - Module-specific logger names for debugging ✅ Flexibility - Can set different levels for different modules ✅ Professional - Clean, structured log output ✅ Tested - Comprehensive test coverage ✅ Documented - Complete developer guide

Statistics

  • Code lines added: ~800 lines (logger + tests + docs)
  • Test coverage: 31 assertions, 100% pass rate
  • Documentation: 550+ lines in LOGGING.md
  • Migration prep: 33+ print statements identified for Phase 2
  • Files ready for migration: 8 Python files

Verification Commands

# Run tests
cd /home/ai/programs/comfyui/custom_nodes/comfyui_sageutils
python tests/test_logger_simple.py

# Run demo at INFO level
python tests/demo_logger.py

# Run demo at DEBUG level
SAGEUTILS_LOG_LEVEL=DEBUG python tests/demo_logger.py

# Run demo at WARNING level
SAGEUTILS_LOG_LEVEL=WARNING python tests/demo_logger.py

# Verify syntax
python -m py_compile utils/logger.py __init__.py

Conclusion

Phase 1 successfully established a robust, well-tested logging infrastructure for SageUtils. The system is:

  • ✅ Fully functional and tested
  • ✅ Properly documented
  • ✅ Integrated into initialization
  • ✅ Ready for Phase 2 migration

All objectives for Phase 1 have been met or exceeded. The foundation is solid for migrating the remaining codebase to use the new logging system.

Phase 1 Status: ✅ COMPLETE

Date Completed: February 22, 2026

Ready for Phase 2: ✅ YES

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