272 lines
10 KiB
Markdown
272 lines
10 KiB
Markdown
# Changelog
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All notable changes to the Trax Media Processing Platform will be documented in this file.
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The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
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and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## [2.0.0] - 2024-12-30
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### Added
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- **V2 Schema Migration**: Complete database schema upgrade for v2 features
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- New `speaker_profiles` table for speaker diarization and identification
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- New `v2_processing_jobs` table for individual transcript processing
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- Enhanced `transcription_results` table with v2-specific columns
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- Backward compatibility layer for v1 clients
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- Comprehensive data migration utilities
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- **Speaker Profile Management**:
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- Speaker profile creation and management
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- Voice characteristics storage in JSONB format
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- Speaker embedding support for identification
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- Sample count tracking for speaker profiles
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- User association for speaker profiles
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- **V2 Processing Jobs**:
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- Individual transcript processing job tracking
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- Progress monitoring with percentage tracking
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- Job type support (enhancement, diarization, etc.)
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- Parameter storage in JSONB format
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- Error handling and result data storage
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- **Enhanced Transcription Results**:
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- Pipeline version tracking (v1, v2, v3, v4)
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- Enhanced content storage for improved transcriptions
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- Speaker diarization content storage
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- Merged content from multiple sources
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- Domain-specific processing support
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- Accuracy estimation for v2 processing
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- Speaker count tracking
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- Quality warnings and processing metadata
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- **Backward Compatibility Layer**:
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- V1 to V2 format conversion utilities
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- V2 to V1 format conversion for existing clients
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- Migration utilities for v1 transcripts
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- Feature detection and summary utilities
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- Automatic migration of existing data
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- **Repository Layer**:
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- `SpeakerProfileRepository` with CRUD operations
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- `V2ProcessingJobRepository` with job management
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- Protocol-based design for easy swapping and testing
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- Comprehensive error handling and validation
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- Search and statistics capabilities
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- **Data Migration Scripts**:
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- Bulk migration of existing transcript data
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- Specific transcript migration capabilities
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- Migration validation and rollback procedures
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- Comprehensive error handling and logging
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- Migration statistics and reporting
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- **Alembic Migration**:
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- Complete schema migration script
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- Proper indexes and foreign key constraints
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- Downgrade path for rollback procedures
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- Data preservation during migration
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### Changed
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- **Database Schema**: Updated to support v2 features while maintaining backward compatibility
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- **Transcription Results**: Enhanced with v2-specific columns (nullable for compatibility)
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- **Repository Pattern**: Implemented protocol-based interfaces for better testing
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- **Error Handling**: Improved error handling throughout the data layer
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- **Performance**: Added indexes for v2-specific queries and operations
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### Technical Details
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- **Registry Pattern**: All models use the registry pattern to prevent SQLAlchemy errors
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- **UTC Timestamps**: All timestamps use UTC timezone consistently
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- **JSONB Support**: Extensive use of PostgreSQL JSONB for flexible data storage
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- **Protocol Interfaces**: Service interfaces use typing.Protocol for easy swapping
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- **Comprehensive Testing**: Full test suite with real database testing
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- **Documentation**: Updated DB-SCHEMA.md and CHANGELOG.md with v2 details
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### Migration Notes
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- **Backward Compatible**: All v2 columns are nullable, allowing v1 clients to continue working
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- **Automatic Migration**: Existing transcripts are automatically migrated to v2 format
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- **Rollback Support**: Complete rollback procedures available if needed
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- **Data Preservation**: All existing data is preserved during migration
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### Testing & Validation
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- **Schema Tests**: All 15 v2 schema migration tests pass successfully
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- **Test Database**: Properly configured `trax_test` database for isolated testing
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- **Foreign Key Testing**: Validated all foreign key relationships and constraints
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- **Backward Compatibility**: Verified v1 data works correctly with v2 schema
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- **Helper Methods**: Created reusable test helpers for complex data setup
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### Lessons Learned
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- **Test Database Setup**: Always create separate test database before running schema tests
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- **Dependency Order**: When testing foreign key relationships, create parent records first
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- **Schema Matching**: Ensure test expectations match actual database schema (column types, nullability)
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- **Helper Functions**: Create reusable test helpers for complex data setup
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- **Migration Testing**: Test both upgrade and downgrade paths for migrations
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## [0.2.0] - 2024-12-30
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### Added
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- **Batch Processing System**: Comprehensive batch processing capabilities
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- Batch job creation and management
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- Task type support (transcribe, enhance, youtube, download, preprocess)
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- Priority-based task processing
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- Retry mechanism with configurable limits
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- Processing time and error tracking
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- Resource monitoring integration
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- **Enhanced Task Management**:
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- Task data storage in JSONB format
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- Priority levels for task processing
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- Status tracking with state machine
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- Error message storage and retry logic
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- Result data storage for completed tasks
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- **Resource Management**:
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- Worker count configuration
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- Memory limit monitoring
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- CPU usage tracking
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- Processing time measurement
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- Resource optimization
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### Changed
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- **Database Schema**: Added batch processing tables and enhanced existing tables
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- **Task Processing**: Improved task handling with better error recovery
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- **Performance**: Enhanced performance monitoring and optimization
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## [0.1.1] - 2024-12-25
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### Added
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- **AI Enhancement Service**: Enhanced transcription capabilities
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- Enhanced content storage in transcripts table
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- Quality validation and accuracy tracking
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- Processing time measurement
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- Quality warnings and error handling
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- Caching support for enhancement results
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### Changed
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- **Transcription Quality**: Improved accuracy and quality metrics
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- **Performance**: Enhanced processing time tracking
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- **Error Handling**: Better error reporting and warnings
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## [0.1.0] - 2024-12-19
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### Added
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- **Core Platform**: Initial release of Trax Media Processing Platform
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- YouTube video metadata extraction
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- Media file download and storage
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- Basic transcription with Whisper API
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- Audio processing metadata tracking
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- Export functionality (JSON and TXT formats)
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- **Database Schema**: Complete initial database design
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- YouTube videos metadata storage
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- Media files download tracking
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- Transcription results storage
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- Audio processing metadata
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- Export history tracking
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- **CLI Interface**: Command-line interface for platform operations
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- YouTube video processing
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- Media file management
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- Transcription operations
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- Export functionality
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- Progress tracking and status reporting
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- **Core Services**:
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- YouTube service for metadata extraction
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- Media service for file management
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- Transcription service with Whisper integration
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- Export service for multiple formats
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- Audio processing service
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### Technical Features
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- **PostgreSQL Database**: Full PostgreSQL support with JSONB
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- **SQLAlchemy ORM**: Modern SQLAlchemy 2.0+ with async support
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- **Alembic Migrations**: Database schema versioning and migration
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- **Registry Pattern**: Prevents SQLAlchemy "multiple classes" errors
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- **Async/Await**: Full async support throughout the platform
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- **Error Handling**: Comprehensive error handling and logging
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- **Testing**: Full test suite with real database testing
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### Performance Features
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- **Download-First Architecture**: Always download media before processing
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- **Audio Optimization**: Convert to 16kHz mono WAV for processing
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- **Caching Strategy**: Multi-layer caching with different TTLs
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- **Batch Processing**: Queue-based batch processing with progress tracking
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- **Resource Management**: Memory and CPU limit enforcement
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## [Unreleased]
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### Planned Features
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- **Version 2.1.0**: Advanced Speaker Features
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- Speaker clustering and identification
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- Voice fingerprinting
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- Speaker confidence scoring
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- Multi-language speaker support
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- **Version 2.2.0**: Enhanced Processing
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- Real-time processing capabilities
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- Advanced quality metrics
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- Processing pipeline optimization
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- Performance monitoring
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- **Version 3.0.0**: Enterprise Features
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- Multi-tenant support
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- Advanced analytics and reporting
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- API rate limiting and quotas
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- Enterprise integration features
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### Technical Improvements
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- **Performance Optimization**: Further performance improvements
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- **Scalability**: Enhanced scalability for large-scale processing
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- **Monitoring**: Advanced monitoring and alerting
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- **Security**: Enhanced security features
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- **Documentation**: Comprehensive API documentation
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---
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## Migration Guide
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### Upgrading to v2.0.0
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1. **Backup Database**: Create a complete backup before migration
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2. **Run Alembic Migration**: Execute the v2 schema migration
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3. **Run Data Migration**: Execute the data migration script
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4. **Validate Migration**: Run validation to ensure data integrity
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5. **Update Application**: Update application code to use v2 features
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### Rollback Procedure
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If issues arise during migration:
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1. **Stop Application**: Stop all application instances
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2. **Run Rollback Migration**: Execute the rollback migration script
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3. **Verify Data**: Ensure all data is intact
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4. **Restart Application**: Restart with v1 compatibility mode
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### Compatibility Notes
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- **V1 Clients**: Continue to work without modification
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- **V2 Features**: Available for new implementations
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- **Data Migration**: Automatic migration of existing data
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- **API Compatibility**: Backward compatible API endpoints
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---
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## Contributing
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When contributing to this project, please:
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1. Follow the existing code style and patterns
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2. Add appropriate tests for new features
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3. Update documentation for any schema changes
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4. Follow the migration guidelines for database changes
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5. Ensure backward compatibility when possible
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## Support
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For support and questions:
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- Check the documentation in the `docs/` directory
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- Review the database schema documentation
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- Consult the migration guides
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- Check the troubleshooting documentation
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