# Code Generation Pipelines Technical Specification
## Overview
Code generation pipelines automate the creation of software artifacts including APIs, tests, documentation, and refactored code. These pipelines leverage AI to understand requirements, apply best practices, and generate production-quality code.
## Pipeline Categories
### 1. API Generation Pipelines
#### 1.1 REST API Generator Pipeline
**ID**: `code-api-rest-generator`
**Purpose**: Generate complete REST APIs with documentation
**Complexity**: High
**Workflow Steps**:
1. **Requirements Analysis** (Claude)
- Parse API specifications
- Extract entities and relationships
- Define endpoints and methods
2. **Schema Design** (Gemini Instructor)
- Generate data models
- Create validation schemas
- Define relationships
3. **Code Generation** (Claude Smart)
- Generate controllers/handlers
- Create service layers
- Implement data access
4. **Test Generation** (Claude)
- Unit tests for each endpoint
- Integration test suites
- Mock data generation
5. **Documentation** (Claude Extract)
- OpenAPI/Swagger specs
- README with examples
- Deployment guides
**Configuration Example**:
```yaml
workflow:
name: "rest_api_generator"
description: "Generate complete REST API from specifications"
defaults:
workspace_dir: "./workspace/api_generation"
output_dir: "./generated/api"
steps:
- name: "analyze_requirements"
type: "claude"
role: "api_architect"
prompt_parts:
- type: "static"
content: "Analyze these API requirements and extract entities:"
- type: "file"
path: "{spec_file}"
options:
tools: ["write", "edit"]
output_format: "json"
- name: "generate_schemas"
type: "gemini_instructor"
role: "schema_designer"
output_schema:
entities:
type: "array"
items:
name: "string"
fields: "array"
relationships: "array"
- name: "generate_api_code"
type: "claude_smart"
preset: "development"
role: "backend_developer"
prompt_parts:
- type: "static"
content: |
Generate {framework} REST API with:
- Controllers for each entity
- Service layer with business logic
- Repository pattern for data access
- Input validation
- Error handling
- type: "previous_response"
step: "generate_schemas"
- name: "generate_tests"
type: "claude"
role: "test_engineer"
prompt: "Generate comprehensive test suite"
options:
workspace_dir: "./tests"
- name: "generate_docs"
type: "claude_extract"
role: "technical_writer"
extraction_targets:
- openapi_spec
- readme
- examples
```
#### 1.2 GraphQL API Generator Pipeline
**ID**: `code-api-graphql-generator`
**Purpose**: Create GraphQL APIs with resolvers
**Complexity**: High
**Features**:
- Schema-first development
- Resolver generation
- DataLoader implementation
- Subscription support
- Federation compatibility
#### 1.3 gRPC Service Generator Pipeline
**ID**: `code-api-grpc-generator`
**Purpose**: Generate gRPC services with protobuf
**Complexity**: Medium
**Components**:
```yaml
components/prompts/grpc_service.yaml:
template: |
Generate gRPC service for {service_name}:
1. Proto file with:
- Service definitions
- Message types
- RPC methods
2. Server implementation:
- Service handlers
- Business logic
- Error handling
3. Client libraries:
- Language: {client_language}
- Retry logic
- Connection pooling
```
### 2. Test Generation Pipelines
#### 2.1 Comprehensive Test Suite Generator
**ID**: `code-test-comprehensive`
**Purpose**: Generate full test coverage
**Complexity**: High
**Test Categories**:
1. **Unit Tests**
- Function-level tests
- Edge case coverage
- Mock generation
2. **Integration Tests**
- API endpoint tests
- Database interactions
- External service mocks
3. **E2E Tests**
- User flow scenarios
- Cross-system testing
- Performance benchmarks
**Implementation Pattern**:
```yaml
steps:
- name: "analyze_codebase"
type: "claude"
role: "test_analyst"
prompt: "Analyze code structure and identify test requirements"
options:
tools: ["read", "glob", "grep"]
- name: "generate_test_plan"
type: "gemini"
role: "test_strategist"
prompt: "Create comprehensive test strategy"
output_file: "test_plan.md"
- name: "generate_unit_tests"
type: "claude_batch"
role: "unit_test_developer"
batch_config:
files_per_batch: 5
output_pattern: "tests/unit/{filename}_test.{ext}"
- name: "generate_integration_tests"
type: "claude"
role: "integration_tester"
prompt: "Generate integration test suite"
- name: "generate_e2e_tests"
type: "claude_smart"
preset: "development"
role: "e2e_tester"
prompt: "Create end-to-end test scenarios"
```
#### 2.2 Property-Based Test Generator
**ID**: `code-test-property-based`
**Purpose**: Generate property-based tests
**Complexity**: Medium
**Features**:
- Property identification
- Generator functions
- Shrinking strategies
- Invariant testing
#### 2.3 Mutation Test Generator
**ID**: `code-test-mutation`
**Purpose**: Create mutation testing suites
**Complexity**: Medium
**Mutation Strategies**:
- Statement mutations
- Value mutations
- Decision mutations
- Coverage analysis
### 3. Documentation Generation Pipelines
#### 3.1 API Documentation Generator
**ID**: `code-docs-api`
**Purpose**: Generate comprehensive API documentation
**Complexity**: Medium
**Documentation Types**:
1. **Reference Documentation**
- Endpoint descriptions
- Parameter details
- Response schemas
- Error codes
2. **Tutorial Documentation**
- Getting started guides
- Authentication flows
- Common use cases
- Best practices
3. **Interactive Documentation**
- Swagger UI setup
- Postman collections
- Code examples
- Try-it-out features
**Workflow Example**:
```yaml
steps:
- name: "extract_api_info"
type: "claude_extract"
role: "api_analyzer"
extraction_config:
targets:
- endpoints
- parameters
- responses
- authentication
- name: "generate_openapi"
type: "gemini_instructor"
role: "openapi_generator"
output_schema:
openapi: "3.0.0"
info: "object"
paths: "object"
components: "object"
- name: "generate_guides"
type: "claude_session"
role: "technical_writer"
session_tasks:
- quick_start_guide
- authentication_guide
- best_practices
- troubleshooting
```
#### 3.2 Code Documentation Generator
**ID**: `code-docs-inline`
**Purpose**: Generate inline code documentation
**Complexity**: Low
**Documentation Elements**:
- Function docstrings
- Class documentation
- Module overviews
- Type annotations
#### 3.3 Architecture Documentation Generator
**ID**: `code-docs-architecture`
**Purpose**: Generate system architecture docs
**Complexity**: High
**Documentation Sections**:
- System overview
- Component diagrams
- Sequence diagrams
- Deployment architecture
- Decision records
### 4. Refactoring Pipelines
#### 4.1 Intelligent Code Refactoring Pipeline
**ID**: `code-refactor-intelligent`
**Purpose**: Automated code improvement
**Complexity**: High
**Refactoring Types**:
1. **Structural Refactoring**
- Extract methods/classes
- Inline redundant code
- Move functionality
- Rename for clarity
2. **Performance Refactoring**
- Algorithm optimization
- Caching implementation
- Query optimization
- Memory efficiency
3. **Pattern Implementation**
- Design pattern application
- SOLID principles
- DRY enforcement
- Code organization
**Implementation Approach**:
```yaml
steps:
- name: "code_analysis"
type: "claude"
role: "code_analyst"
prompt: "Analyze code for refactoring opportunities"
options:
tools: ["read", "grep", "glob"]
- name: "identify_patterns"
type: "gemini"
role: "pattern_detector"
gemini_functions:
- name: "detect_code_smells"
- name: "suggest_patterns"
- name: "calculate_complexity"
- name: "plan_refactoring"
type: "claude_smart"
preset: "analysis"
role: "refactoring_planner"
prompt: "Create detailed refactoring plan"
- name: "execute_refactoring"
type: "claude_robust"
role: "refactoring_engineer"
error_handling:
syntax_errors: "rollback"
test_failures: "iterate"
options:
tools: ["edit", "multiedit", "write"]
- name: "verify_behavior"
type: "claude"
role: "test_runner"
prompt: "Run tests to verify behavior preservation"
options:
tools: ["bash"]
```
#### 4.2 Legacy Code Modernization Pipeline
**ID**: `code-refactor-modernize`
**Purpose**: Update legacy codebases
**Complexity**: High
**Modernization Aspects**:
- Language version updates
- Framework migrations
- Dependency updates
- Security improvements
#### 4.3 Code Style Standardization Pipeline
**ID**: `code-refactor-style`
**Purpose**: Enforce consistent code style
**Complexity**: Low
**Style Elements**:
- Formatting rules
- Naming conventions
- Import organization
- Comment standards
## Reusable Components
### Code Analysis Components
```yaml
# components/steps/analysis/code_analyzer.yaml
component:
id: "code-analyzer"
type: "step"
analysis_types:
- complexity_metrics
- dependency_analysis
- dead_code_detection
- security_vulnerabilities
- performance_bottlenecks
outputs:
report_format: ["json", "markdown", "html"]
metrics: ["cyclomatic", "cognitive", "halstead"]
```
### Code Generation Templates
```yaml
# components/prompts/code/api_controller.yaml
component:
id: "api-controller-template"
type: "prompt"
variables:
- entity_name
- operations
- validation_rules
- auth_requirements
template: |
Generate {language} REST controller for {entity_name}:
Operations: {operations}
Requirements:
- Input validation: {validation_rules}
- Authentication: {auth_requirements}
- Error handling with proper status codes
- Logging for debugging
- OpenAPI annotations
```
### Test Generation Functions
```yaml
# components/functions/test_generation.yaml
functions:
- name: "generate_test_cases"
description: "Generate test cases from code"
parameters:
code_file: "string"
coverage_target: "number"
test_types: "array"
- name: "generate_mocks"
description: "Create mock objects"
parameters:
dependencies: "array"
mock_framework: "string"
```
## Quality Assurance
### 1. Code Quality Checks
```yaml
quality_gates:
generated_code:
- syntax_valid: true
- tests_pass: true
- coverage: ">= 80%"
- linting_errors: 0
- security_issues: 0
documentation:
- completeness: ">= 95%"
- examples_provided: true
- links_valid: true
```
### 2. Review Process
- Automated code review
- Style guide compliance
- Best practice verification
- Security scanning
## Performance Optimization
### 1. Generation Strategies
- Template caching
- Incremental generation
- Parallel processing
- Smart batching
### 2. Resource Management
- Token optimization
- Memory efficiency
- Rate limit handling
- Cost tracking
## Integration Patterns
### 1. Version Control Integration
```yaml
vcs_integration:
pre_generation:
- branch_creation
- conflict_check
post_generation:
- commit_changes
- create_pr
- run_ci_checks
```
### 2. CI/CD Integration
- Automated testing
- Code quality gates
- Deployment triggers
- Monitoring setup
### 3. IDE Integration
- Code completion
- Inline suggestions
- Refactoring tools
- Documentation hover
## Best Practices
1. **Iterative Generation**: Build incrementally
2. **Human Review**: Always review generated code
3. **Test First**: Generate tests before code
4. **Documentation**: Keep docs in sync
5. **Version Control**: Track all changes
6. **Security First**: Scan for vulnerabilities
## Advanced Features
### 1. Context-Aware Generation
- Project structure understanding
- Coding standard detection
- Framework convention following
### 2. Learning from Feedback
- Code review incorporation
- Pattern learning
- Style adaptation
### 3. Multi-Language Support
- Cross-language generation
- Language-specific optimizations
- Framework expertise
## Monitoring and Metrics
### 1. Generation Metrics
- Lines of code generated
- Test coverage achieved
- Documentation completeness
- Generation time
- Token usage
### 2. Quality Metrics
- Code complexity scores
- Bug detection rate
- Performance benchmarks
- Security scan results
## Future Enhancements
1. **AI Code Review**: Automated PR reviews
2. **Predictive Refactoring**: Proactive improvements
3. **Architecture Generation**: Full system design
4. **Performance Optimization**: AI-driven tuning
5. **Security Hardening**: Automated security fixes
