Module file_processor_service 

File Processor Service Interface

This module defines the domain service interface for file processing operations within the adaptive pipeline system. It provides abstractions for coordinating file processing workflows, chunk management, and processing statistics.

Overview

The file processor service provides:

• File Processing Coordination: Orchestrates file processing workflows
• Chunk Management: Manages file chunking and chunk processing
• Processing Statistics: Collects and reports processing metrics
• Error Handling: Comprehensive error handling and recovery
• Parallel Processing: Support for parallel chunk processing

Architecture

The service follows Domain-Driven Design principles:

• Domain Interface: FileProcessorService trait defines the contract
• Configuration: FileProcessorConfig encapsulates processing parameters
• Chunk Processing: ChunkProcessor trait for pluggable processing logic
• Statistics: Comprehensive processing statistics and metrics

Key Features

File Processing Workflow

• File Analysis: Analyze files to determine optimal processing strategy
• Chunk Creation: Divide files into appropriately sized chunks
• Parallel Processing: Process chunks concurrently for better performance
• Result Aggregation: Collect and aggregate processing results

Chunk Processing

• Pluggable Processors: Support for custom chunk processing logic
• Processing Pipeline: Chain multiple processors for complex workflows
• Error Isolation: Isolate errors to individual chunks when possible
• Progress Tracking: Real-time progress monitoring and reporting

Performance Optimization

• Adaptive Chunking: Dynamic chunk size adjustment based on performance
• Memory Management: Efficient memory usage with chunk recycling
• Parallel Execution: Configurable parallel processing capabilities
• Resource Management: Intelligent resource allocation and cleanup

Usage Examples

Basic File Processing

Custom Chunk Processor

Parallel Processing

Configuration

File Processor Configuration

The service behavior is controlled through FileProcessorConfig:

• File Size Limits: Maximum file size for processing
• Chunk Size: Preferred chunk size for processing
• Memory Mapping: Enable/disable memory mapping for large files
• Concurrency: Maximum number of concurrent file operations
• Integrity Verification: Enable/disable file integrity checks
• Temporary Directory: Location for intermediate processing files

Performance Tuning

• Chunk Size: Optimize chunk size based on processing characteristics
• Concurrency: Balance concurrency with system resources
• Memory Mapping: Use memory mapping for large files
• Buffer Management: Efficient buffer allocation and reuse

Processing Statistics

Collected Metrics

• Processing Time: Total and per-chunk processing times
• Throughput: Processing throughput in bytes/second
• Chunk Statistics: Number of chunks processed and their sizes
• Error Rates: Processing error rates and failure analysis
• Resource Usage: Memory and CPU usage during processing

Performance Analysis

• Bottleneck Identification: Identify processing bottlenecks
• Optimization Recommendations: Suggest configuration optimizations
• Trend Analysis: Track performance trends over time

Error Handling

Processing Errors

• Chunk-Level Errors: Isolate errors to individual chunks
• File-Level Errors: Handle file-level processing failures
• System Errors: Handle system resource and I/O errors
• Configuration Errors: Validate configuration parameters

Recovery Strategies

• Retry Logic: Automatic retry for transient failures
• Partial Processing: Continue processing unaffected chunks
• Fallback Processing: Alternative processing strategies
• Error Reporting: Detailed error context and suggestions

Integration

The file processor service integrates with:

• File I/O Service: Uses file I/O service for reading and writing
• Chunk Processors: Coordinates with pluggable chunk processors
• Pipeline Service: Integrated into pipeline processing workflow
• Metrics Service: Reports processing metrics and statistics

Thread Safety

The service interface is designed for thread safety:

• Concurrent Processing: Safe concurrent processing of multiple files
• Shared Resources: Safe sharing of processing resources
• State Management: Thread-safe state management and coordination

Future Enhancements

Planned enhancements include:

• Streaming Processing: Real-time streaming file processing
• Distributed Processing: Support for distributed chunk processing
• Adaptive Optimization: Automatic optimization based on performance
• Advanced Scheduling: Sophisticated chunk scheduling strategies

Structs

ChainProcessor

Processor that applies multiple processors in sequence

FileProcessingResult

Result of file processing operation

FileProcessingStats

Statistics for file processing operations

FileProcessorConfig

Configuration for file processing operations

ServiceAdapter

Generic service adapter for chunk processing This adapter allows any service implementing the appropriate trait to be used as a ChunkProcessor

Traits

ChunkProcessor

Trait for processing individual file chunks

FileProcessorService

Trait for processing files with the pipeline system