03 tasks

Documentation for 03_tasks from the Dspex repository.

DSPex V2 Foundation - Implementation Tasks

Document Information

Version: 1.0.0
Date: 2025-01-19
Status: Draft
Phase: Foundation (Initial Phase)
Timeline: 4 weeks

Task Overview

This document outlines the implementation tasks for DSPex V2 Foundation phase. Tasks are organized by priority and dependencies, with clear deliverables and acceptance criteria.

Week 1: Core Infrastructure

1.1 Project Setup and Dependencies

Priority: P0 (Critical)
Assignee: TBD
Duration: 2 days

Tasks:

Create new DSPex V2 project structure
Add Snakepit dependency to mix.exs
Configure Python environments (general, optimizer, neural)
Set up development tools (formatter, credo, dialyzer)
Create basic CI/CD pipeline

Deliverables:

Clean project with proper structure
All dependencies installed and configured
Development environment ready
CI pipeline running

Acceptance Criteria:

mix compile runs without warnings
mix test passes (even if empty)
Snakepit pools can be started
Python environments accessible

1.2 Native Signature Implementation

Priority: P0 (Critical)
Dependencies: 1.1
Duration: 3 days

Tasks:

Implement signature parser with tokenizer
Build AST transformer for signatures
Create signature validator
Add signature compiler with caching
Write comprehensive tests

Code Structure:

lib/dspex/
├── native/
│   ├── signature.ex
│   ├── signature/
│   │   ├── parser.ex
│   │   ├── tokenizer.ex
│   │   ├── ast.ex
│   │   └── validator.ex

Deliverables:

Complete signature module
Support for all DSPy signature features
100% test coverage
Performance benchmarks

Acceptance Criteria:

Parse complex signatures: "question: str, context: list[str] -> answer: str, confidence: float"
Validate inputs against signatures
Compile signatures for performance
Sub-millisecond parsing time

1.3 Snakepit Bridge Foundation

Priority: P0 (Critical)
Dependencies: 1.1
Duration: 3 days

Tasks:

Implement PoolManager supervisor
Create pool specifications for different workloads
Build request/response protocol handler
Add error classification system
Implement health checking

Code Structure:

lib/dspex/
├── python/
│   ├── pool_manager.ex
│   ├── bridge.ex
│   ├── protocol.ex
│   ├── errors.ex
│   └── health_check.ex

Deliverables:

Working Snakepit integration
Multiple pool types configured
Protocol handling with correlation
Health monitoring system

Acceptance Criteria:

Pools start and maintain connections
Requests routed to appropriate pools
Health checks detect failures
Graceful error handling

Week 2: Core Functionality

2.1 Router Implementation

Priority: P0 (Critical)
Dependencies: 1.2, 1.3
Duration: 2 days

Tasks:

Design router registry system
Implement routing decision logic
Add fallback mechanisms
Create metrics collection
Write router tests

Code Structure:

lib/dspex/
├── router.ex
├── router/
│   ├── registry.ex
│   ├── strategy.ex
│   ├── metrics.ex
│   └── fallback.ex

Deliverables:

Smart routing system
Native and Python registries
Fallback handling
Performance metrics

Acceptance Criteria:

Routes to correct implementation
Falls back on failures
Tracks routing decisions
Sub-10ms routing overhead

2.2 Native Template Engine

Priority: P0 (Critical)
Dependencies: 1.2
Duration: 2 days

Tasks:

Implement EEx-based template renderer
Add template compilation
Create template validator
Build template cache
Add security measures

Deliverables:

Fast template rendering
Compiled template cache
Injection prevention
Template validation

Acceptance Criteria:

Renders DSPy-style templates
Prevents template injection
Caches compiled templates
High performance rendering

2.3 Basic Python Modules

Priority: P0 (Critical)
Dependencies: 1.3
Duration: 3 days

Tasks:

Implement Predict module bridge
Add ChainOfThought support
Create Python-side bridge script
Handle streaming responses
Test with real DSPy

Python Bridge Script:

# priv/python/dspy_general.py
import dspy
import json
import sys

class DSPyBridge:
    def __init__(self):
        self.modules = {}
        
    def handle_request(self, request):
        operation = request["operation"]
        args = request["args"]
        
        if operation == "predict":
            return self.predict(args)
        elif operation == "chain_of_thought":
            return self.chain_of_thought(args)
        # ... more operations

Deliverables:

Working Predict module
ChainOfThought implementation
Python bridge script
Streaming support

Acceptance Criteria:

Execute DSPy operations
Handle errors gracefully
Support streaming responses
Match DSPy semantics

2.4 Public API Design

Priority: P1 (High)
Dependencies: 2.1, 2.2, 2.3
Duration: 1 day

Tasks:

Design clean public API
Add proper delegation
Create API documentation
Add type specs
Ensure backwards compatibility path

Deliverables:

Clean, intuitive API
Complete documentation
Type specifications
Usage examples

Acceptance Criteria:

API feels Elixir-native
All functions documented
Types properly specified
Examples work correctly

Week 3: Advanced Features

3.1 Pipeline Engine

Priority: P0 (Critical)
Dependencies: 2.1, 2.3
Duration: 3 days

Tasks:

Design pipeline DSL
Implement step execution
Add parallel execution support
Create pipeline compiler
Build monitoring hooks

Pipeline Example:

pipeline = DSPex.pipeline([
  {:native, Signature, spec: "..."},
  {:python, "dspy.ChainOfThought", signature: "..."},
  {:parallel, [
    {:native, Search, index: "docs"},
    {:python, "dspy.ColBERTv2", k: 10}
  ]}
])

Deliverables:

Pipeline definition DSL
Sequential/parallel execution
Error handling
Performance monitoring

Acceptance Criteria:

Define complex pipelines
Mix native and Python steps
Handle failures gracefully
Monitor execution

3.2 Session Management

Priority: P1 (High)
Dependencies: 1.3
Duration: 2 days

Tasks:

Implement session creation
Add worker affinity
Build session state management
Create cleanup mechanisms
Add session persistence

Deliverables:

Stateful session support
Worker affinity
Automatic cleanup
Session persistence

Acceptance Criteria:

Maintain state across calls
Sessions bound to workers
Cleanup inactive sessions
Recover from failures

3.3 Protocol Optimization

Priority: P1 (High)
Dependencies: 1.3
Duration: 2 days

Tasks:

Add MessagePack support
Implement Apache Arrow for large data
Create protocol auto-selection
Add compression support
Benchmark protocols

Deliverables:

Multiple protocol support
Automatic selection
Performance benchmarks
Protocol documentation

Acceptance Criteria:

Support JSON, MessagePack, Arrow
Auto-select based on data
Improve performance for large data
Maintain compatibility

3.4 Monitoring and Telemetry

Priority: P1 (High)
Dependencies: All
Duration: 2 days

Tasks:

Define telemetry events
Add execution tracing
Create metrics collectors
Build monitoring dashboard
Add alerting hooks

Telemetry Events:

:telemetry.execute(
  [:dspex, :router, :route],
  %{duration: duration},
  %{implementation: :native, operation: :signature}
)

Deliverables:

Comprehensive telemetry
Performance metrics
Error tracking
Dashboard prototype

Acceptance Criteria:

Track all operations
Measure performance
Detect anomalies
Export metrics

Week 4: Production Readiness

4.1 Error Handling Enhancement

Priority: P0 (Critical)
Duration: 2 days

Tasks:

Implement circuit breakers
Add retry logic with backoff
Create error recovery strategies
Build error reporting
Add error documentation

Deliverables:

Robust error handling
Automatic recovery
Clear error messages
Error tracking

Acceptance Criteria:

Graceful degradation
Automatic retry
Helpful error messages
No cascading failures

4.2 Performance Optimization

Priority: P0 (Critical)
Duration: 2 days

Tasks:

Profile critical paths
Optimize native operations
Add caching layers
Tune pool sizes
Create benchmarks

Deliverables:

Performance improvements
Caching system
Optimized pools
Benchmark suite

Acceptance Criteria:

Meet latency targets
Achieve throughput goals
Efficient resource usage
Reproducible benchmarks

4.3 Documentation

Priority: P0 (Critical)
Duration: 2 days

Tasks:

Write getting started guide
Create API reference
Add architecture documentation
Write deployment guide
Create troubleshooting guide

Documentation Structure:

docs/
├── getting_started.md
├── api_reference.md
├── architecture.md
├── deployment.md
├── troubleshooting.md
└── examples/
    ├── basic_usage.md
    ├── pipelines.md
    └── advanced_patterns.md

Deliverables:

Complete documentation
Code examples
Architecture diagrams
Deployment guides

Acceptance Criteria:

Clear and comprehensive
Examples run correctly
Covers common use cases
Easy to navigate

4.4 Testing and Quality

Priority: P0 (Critical)
Duration: 2 days

Tasks:

Achieve >90% test coverage
Add integration tests
Create load tests
Run security audit
Fix all critical issues

Test Structure:

test/
├── unit/
│   ├── native/
│   ├── python/
│   └── router/
├── integration/
│   ├── pipeline_test.exs
│   └── end_to_end_test.exs
└── performance/
    ├── load_test.exs
    └── benchmark_test.exs

Deliverables:

Comprehensive test suite
Load test results
Security audit report
Quality metrics

Acceptance Criteria:

90% code coverage
All tests passing
Load tests successful
No security issues

4.5 Release Preparation

Priority: P0 (Critical)
Duration: 1 day

Tasks:

Create release checklist
Tag version 0.1.0
Prepare changelog
Update README
Plan announcement

Deliverables:

Tagged release
Complete changelog
Updated documentation
Announcement ready

Acceptance Criteria:

Clean release
No blocking issues
Documentation complete
Community notified

Success Metrics

Technical Metrics

All P0 tasks completed
>90% test coverage achieved
Performance targets met
Zero critical bugs

Quality Metrics

Clean codebase (Credo passing)
Type specs complete (Dialyzer passing)
Documentation comprehensive
Examples working

Timeline Metrics

Week 1 deliverables complete
Week 2 deliverables complete
Week 3 deliverables complete
Week 4 deliverables complete

Risk Mitigation

Technical Risks

Snakepit integration issues
- Mitigation: Early prototype, close collaboration with Snakepit team
Performance not meeting targets
- Mitigation: Profile early, optimize throughout
DSPy compatibility issues
- Mitigation: Test against multiple DSPy versions

Schedule Risks

Underestimated complexity
- Mitigation: Focus on MVP features first
Dependencies blocking progress
- Mitigation: Parallel work streams where possible

Next Phase Preview

After successful completion of the Foundation phase:

Phase 2: Advanced Features (Weeks 5-8)

Variable system integration
Real-time cognitive orchestration
Multi-agent coordination
Advanced DSPy patterns

Phase 3: Production Features (Weeks 9-12)

Distributed execution
Auto-scaling
Advanced monitoring
Enterprise features