MCP GitHub Issue Server
by sammcj
# Batch Processing Architecture
## Overview
The batch processing system provides efficient and reliable task operations with smart validation,
dependency management, and status transitions. The architecture follows a service-oriented pattern
with clear separation of concerns.
## Core Components
### 1. Base Layer
- **BaseBatchProcessor**: Foundation for batch operations
- Memory management and cleanup
- Retry logic and timeout handling
- Performance monitoring
- Resource management
### 2. Services
- **DependencyValidationService**
- Smart dependency validation with suggestions
- Multiple validation modes (STRICT, LENIENT, DEFERRED)
- Path similarity suggestions
- Circular dependency detection
- Status constraint validation
- **StatusTransitionService**
- State machine validation
- Status propagation tracking
- Dependency status constraints
- Automatic status suggestions
- Clear error messages
### 3. Main Processor
- **UnifiedBatchProcessor**
- High-level orchestration
- Smart error handling
- Dependency-aware operation ordering
- Transaction support
- Status management
## Usage Examples
### Basic Task Updates
```typescript
const processor = new UnifiedBatchProcessor(dependencies, {
validationMode: ValidationMode.LENIENT,
suggestSimilarPaths: true,
});
const result = await processor.execute([
{
id: 'project/task1',
status: TaskStatus.IN_PROGRESS,
},
]);
// Result includes:
// {
// success: true,
// task: { ... },
// warnings: ['Status change will affect dependent tasks'],
// statusEffects: [
// {
// path: 'project/task2',
// fromStatus: 'BLOCKED',
// toStatus: 'PENDING',
// reason: 'Dependencies satisfied'
// }
// ]
// }
```
### Dependency Validation with Suggestions
```typescript
const result = await processor.execute([
{
id: 'project/task1',
dependencies: ['project/dep1', 'project/dep2'],
},
]);
// If dependency doesn't exist:
// {
// success: false,
// error: "Dependency not found: project/dep1",
// suggestions: ["Did you mean: project/dep-1, project/dep1-new?"],
// warnings: ["Consider creating missing dependency first"]
// }
```
### Batch Status Updates
```typescript
const result = await processor.execute([
{
id: 'project/milestone1',
status: TaskStatus.COMPLETED,
},
{
id: 'project/task1',
status: TaskStatus.IN_PROGRESS,
},
]);
// Automatically:
// - Orders operations by dependencies
// - Validates status transitions
// - Tracks status propagation
// - Provides detailed feedback
```
## Error Handling
### 1. Dependency Errors
```typescript
// Before:
"Missing dependencies: task1, task2"
// After:
{
error: "Missing dependency: task1",
suggestions: ["Did you mean: task-1, task1-new?"],
warnings: ["Similar tasks found, verify correct dependency"]
}
```
### 2. Status Transitions
```typescript
// Before:
"Invalid status transition"
// After:
{
error: "Cannot complete task: Dependencies not ready",
details: {
blockingDependencies: [
{
path: "task1",
status: "IN_PROGRESS",
reason: "Work in progress"
}
]
}
}
```
### 3. Batch Processing
```typescript
// Before:
"Batch processing failed"
// After:
{
results: [
{
path: "task1",
success: true,
statusEffects: [
{
path: "task2",
fromStatus: "BLOCKED",
toStatus: "PENDING",
reason: "Dependencies satisfied"
}
]
}
],
errors: [
{
path: "task2",
error: "Invalid status transition",
suggestions: ["Update dependency task3 first"]
}
],
metadata: {
processingTime: 150,
successCount: 1,
errorCount: 1
}
}
```
## Best Practices
1. Use Appropriate Validation Mode
- STRICT: For critical operations requiring all dependencies
- LENIENT: For operations that can handle missing dependencies
- DEFERRED: For bulk operations with dependency creation
2. Handle Status Changes Carefully
- Check status propagation effects
- Consider dependent tasks
- Use appropriate status transitions
3. Monitor Performance
- Watch batch sizes
- Monitor memory usage
- Use concurrent processing when appropriate
4. Error Handling
- Check suggestions for missing dependencies
- Review status transition effects
- Handle partial successes appropriately
5. Resource Management
- Clean up resources properly
- Monitor memory usage
- Use batch timeouts appropriately