# Architecture Overview BotServer follows a modular architecture designed for scalability, maintainability, and extensibility. Each module handles specific responsibilities and communicates through well-defined interfaces. ## Core Architecture ### System Architecture Diagram ``` ┌─────────────────────────────────────────────────────────────────────────┐ │ BotServer (Binary) │ ├─────────────────────────────────────────────────────────────────────────┤ │ │ │ ┌────────────────────────────────────────────────────────────────────┐ │ │ │ Core Engine │ │ │ │ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │ │ │ │ │ BASIC │ │ Session │ │ Context │ │ │ │ │ │ Interpreter │ │ Manager │ │ Manager │ │ │ │ │ │ (Rhai) │ │ (Tokio) │ │ (Memory) │ │ │ │ │ └──────┬───────┘ └──────┬───────┘ └──────┬───────┘ │ │ │ └─────────┼──────────────────┼──────────────────┼───────────────────┘ │ │ │ │ │ │ │ ┌─────────▼──────────────────▼──────────────────▼───────────────────┐ │ │ │ AI & NLP Layer │ │ │ │ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │ │ │ │ │ LLM │ │ Embeddings │ │ Knowledge │ │ │ │ │ │ Integration │ │ (BGE) │ │ Base │ │ │ │ │ └──────┬───────┘ └──────┬───────┘ └──────┬───────┘ │ │ │ └─────────┼──────────────────┼──────────────────┼───────────────────┘ │ │ │ │ │ │ │ ┌─────────▼──────────────────▼──────────────────▼───────────────────┐ │ │ │ Communication Layer │ │ │ │ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │ │ │ │ │ WebSocket │ │ REST API │ │ Channels │ │ │ │ │ │ Server │ │ (Axum) │ │ Adapters │ │ │ │ │ └──────┬───────┘ └──────┬───────┘ └──────┬───────┘ │ │ │ └─────────┼──────────────────┼──────────────────┼───────────────────┘ │ │ │ │ │ │ │ ┌─────────▼──────────────────▼──────────────────▼───────────────────┐ │ │ │ Storage Layer │ │ │ │ ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐ │ │ │ │ │PostgreSQL│ │ Valkey │ │ SeaweedFS│ │ Qdrant │ │ │ │ │ │ (Diesel) │ │ Cache │ │ S3 │ │ Vectors │ │ │ │ │ └──────────┘ └──────────┘ └──────────┘ └──────────┘ │ │ │ └─────────────────────────────────────────────────────────────────────┘ │ │ │ └─────────────────────────────────────────────────────────────────────────┘ ``` ### Module Dependency Graph ``` main.rs │ ▼ bootstrap/ │ ┌──────────────────┼──────────────────┐ │ │ │ ▼ ▼ ▼ package_manager/ config/ database/ │ │ │ │ └──────┬───────────┘ │ │ ▼ ▼ web_server/ ◄──────────── session/ │ │ ├──────┬──────┬──────────┤ │ │ │ │ ▼ ▼ ▼ ▼ channels/ bot/ basic/ auth/ │ │ │ │ └──────┴──────┼──────────┘ │ ▼ llm/ │ ▼ context/ ``` ## Module Organization ### Data Flow Through Modules ``` User Input │ ▼ ┌─────────────────┐ │ web_server/ │ Axum HTTP Server │ channels/ │ Route to channel └────────┬────────┘ │ ▼ ┌─────────────────┐ │ session/ │ Load/Create Session │ │ Validate Token └────────┬────────┘ │ ▼ ┌─────────────────┐ │ auth/ │ Check Permissions │ │ Apply RBAC └────────┬────────┘ │ ▼ ┌─────────────────┐ │ bot/ │ Route to Bot Instance │ │ Load Configuration └────────┬────────┘ │ ▼ ┌─────────────────┐ │ basic/ │ Execute BASIC Script │ │ Parse Keywords └────────┬────────┘ │ ├────────────┬────────────┬────────────┐ ▼ ▼ ▼ ▼ ┌─────────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ │ context/ │ │ drive/ │ │database/│ │ llm/ │ │ Load KB │ │Get Files│ │Query DB │ │Call AI │ └─────────────┘ └─────────┘ └─────────┘ └─────────┘ │ │ │ │ └────────────┴────────────┴────────────┘ │ ▼ Bot Response ``` ### Core Modules #### `auth/` Authentication and authorization system handling: - User management - Group/organization management - Role-based access control (RBAC) - JWT token management - OAuth integration - Two-factor authentication #### `automation/` Workflow automation engine providing: - Process automation - Scheduled tasks - Event-driven automation - Workflow orchestration - Integration with external systems #### `basic/` BASIC dialect interpreter and runtime: - Keyword implementation - Script compilation - Variable management - Flow control - Tool integration - Error handling #### `bootstrap/` System initialization and startup: - Component verification - Service startup sequencing - Database migrations - Template deployment - Health checks - Configuration loading #### `bot/` Bot instance management: - Bot lifecycle (create, mount, unmount) - Conversation handling - User input processing - Response generation - Multi-bot coordination - Session isolation ### Communication Modules #### `channels/` Multi-channel messaging adapters: - Web interface - WhatsApp Business API - Microsoft Teams - Slack - Instagram - SMS - Voice #### `meet/` Real-time communication features: - Video conferencing - Voice calls - Screen sharing - Recording - Transcription - Meeting scheduling #### `web_server/` HTTP server and web interface: - Static file serving - WebSocket handling - REST API routing - CORS management - Request/response processing ### AI & Knowledge Modules #### `llm/` Large Language Model integration: - Model selection - Prompt formatting - Token management - Response streaming - Cost tracking - Model fallbacks #### `llm_models/` Specific model implementations: - OpenAI (GPT-3.5, GPT-4) - Anthropic (Claude) - Google (Gemini) - Meta (Llama) - Local models - Custom models #### `prompt_manager/` Centralized prompt management: - Prompt templates - Variable substitution - Model-specific optimization - Version control - A/B testing - Performance tracking #### `context/` Conversation context management: - Context window optimization - History management - Context compression - Relevance filtering - Multi-turn tracking ### Storage & Data Modules #### `drive/` File and document management: - File upload/download - Document processing - Version control - Sharing permissions - Quota management - Search indexing #### `drive_monitor/` Storage monitoring and sync: - Change detection - Auto-sync - Conflict resolution - Backup management - Storage analytics #### `package_manager/` Bot package management: - Package loading - Dependency resolution - Version management - Hot reload - Package validation ### Processing Modules #### `engines/` Various processing engines: - Rule engine - Workflow engine - Event processor - Message queue - Job scheduler #### `calendar_engine/` Calendar and scheduling: - Event management - Availability checking - Meeting coordination - Reminder system - Timezone handling #### `task_engine/` Task management system: - Task creation - Assignment - Status tracking - Dependencies - Notifications #### `email/` Email integration: - SMTP sending - IMAP receiving - Template management - Tracking - Bounce handling ### Utility Modules #### `session/` User session management: - Session creation - State persistence - Session timeout - Concurrent sessions - Session recovery #### `config/` Configuration management: - Config loading - Environment variables - Hot reload - Validation - Defaults #### `shared/` Shared utilities and models: - Database models - Common types - Helper functions - Constants - Error types #### `compliance/` Regulatory compliance: - GDPR compliance - Data retention - Audit logging - Privacy controls - Consent management #### `nvidia/` GPU acceleration support: - CUDA integration - Model inference - Batch processing - Performance optimization #### `ui_tree/` UI component tree management: - Virtual DOM - Component lifecycle - State management - Event handling - Rendering optimization #### `web_automation/` Web scraping and automation: - Browser automation - Content extraction - Form filling - Screenshot capture - Change monitoring ## Data Flow ### Request Processing Pipeline 1. **Channel Adapter** receives user input 2. **Session Manager** identifies/creates session 3. **Context Manager** loads conversation history 4. **BASIC Interpreter** executes dialog script 5. **LLM Integration** processes natural language 6. **Knowledge Base** provides relevant information 7. **Response Generator** formats output 8. **Channel Adapter** delivers response ### Storage Architecture #### Primary Database (PostgreSQL) - User accounts - Bot configurations - Session data - Conversation history - System metadata #### Object Storage (Drive) - File uploads - Document storage - Media files - Backups - Logs #### Cache Layer - Session cache - Frequently accessed data - Rate limiting - Temporary storage - Pub/sub messaging #### Vector Database (Qdrant) - Document embeddings - Semantic search index - Knowledge base vectors - Similarity matching ## Security Architecture ### Authentication Flow 1. User provides credentials 2. Auth module validates 3. JWT token issued 4. Token verified on each request 5. Session established 6. Permissions checked ### Data Protection - Encryption at rest (database, files) - Encryption in transit (TLS/SSL) - Sensitive data masking - PII detection - Secure key management ### Access Control - Role-based permissions - Resource-level authorization - API rate limiting - IP allowlisting - Audit logging ## Deployment Architecture ### Container Structure - Main application container - PostgreSQL database - Drive storage (S3-compatible) - Cache (Valkey) - Qdrant vector DB - Nginx reverse proxy ### Scaling Strategy - Horizontal scaling for web servers - Read replicas for database - Distributed cache - Load balancing - Auto-scaling policies ### High Availability - Multi-zone deployment - Database replication - Storage redundancy - Health monitoring - Automatic failover ## Performance Optimization ### Caching Strategy - Response caching - Query result caching - Static asset caching - API response caching - Knowledge base caching ### Async Processing - Background jobs - Message queues - Event-driven architecture - Non-blocking I/O - Worker pools ### Resource Management - Connection pooling - Memory management - Token optimization - Query optimization - Lazy loading ## Monitoring & Observability ### Metrics Collection - System metrics - Application metrics - Business metrics - User analytics - Performance tracking ### Logging - Structured logging - Log aggregation - Error tracking - Audit trails - Debug logging ### Health Checks - Liveness probes - Readiness probes - Dependency checks - Performance monitoring - Alert system ## Extension Points ### Plugin System - Custom keywords - External tools - API integrations - Custom channels - Model providers ### Webhook Support - Incoming webhooks - Outgoing webhooks - Event subscriptions - Callback handling - Retry mechanisms ### API Integration - REST API - GraphQL (planned) - WebSocket - gRPC (planned) - OpenAPI spec ## Development Workflow ### Local Development 1. Clone repository 2. Install dependencies 3. Configure environment 4. Run migrations 5. Start services 6. Load templates ### Testing Strategy - Unit tests - Integration tests - End-to-end tests - Load testing - Security testing ### CI/CD Pipeline - Automated testing - Code quality checks - Security scanning - Build process - Deployment automation ## Future Architecture Plans ### Planned Enhancements - Microservices migration - Kubernetes native - Multi-region support - Edge deployment - Serverless functions ### Performance Goals - Sub-100ms response time - 10,000+ concurrent users - 99.99% uptime - Elastic scaling - Global CDN