The project continues to evolve as a comprehensive framework for building resilient, distributed multi-agent systems that can operate effectively in offline and constrained environments.

## Completed Tasks

### 1. API Integration System (`api-integration` crate)
- **REST API client** with retry logic, authentication, and flexible configuration
- **gRPC client/server** support using tonic/prost (optional feature)
- **GraphQL client/server** using async-graphql (optional feature)
- **WebSocket** client/server for real-time communication
- **Unified API client** that can work with multiple protocols simultaneously
- **Integration bridges** between external APIs and mesh transport

### 2. ML Model Versioning System (`ml-model-versioning` crate)
- **Model metadata management** with semantic versioning
- **Storage abstraction** with in-memory implementation
- **Checksum validation** (SHA-256) for data integrity
- **Query system** with filtering by metrics, framework, type
- **Integration with federated learning** and RL planner
- **Registry statistics** and analytics

### 3. Event-Driven Architecture (`event-driven` crate)
- **Event bus** with topics, filters, and priority levels
- **Rich event model** with metadata, correlation IDs, and TTL
- **Flexible subscription filters** (type, source, metadata, payload)
- **Async event handlers** with retry and dead-letter queue support
- **Reactive streams** for event processing
- **Integrations** with mesh transport, agent core, planning, monitoring
- **Event-driven configuration management** and task scheduling

### 4. Backup & Restore System (`backup-restore` crate)
- **Backup creation** with compression and checksum verification
- **Restore functionality** with integrity validation
- **Configurable compression** algorithms (none, zlib, gzip)
- **Backup metadata** tracking with versioning

## Technical Implementation Details

- **All crates** follow consistent Rust patterns with proper error handling (`thiserror`)
- **Comprehensive documentation** with examples for each module
- **Feature flags** for optional dependencies and functionality
- **Integration with existing SDK components** (mesh-transport, agent-core, etc.)
- **Added to workspace Cargo.toml** for unified build management
- **Unit tests** demonstrating basic functionality

## Architecture Impact

These additions significantly enhance the SDK's capabilities:

1. **External Integration**: Agents can now communicate with external services via REST, gRPC, GraphQL, and WebSocket
2. **MLOps Support**: Federated learning and RL systems now have proper model versioning and management
3. **Decoupled Design**: Event-driven architecture enables scalable, maintainable systems with loose coupling
4. **Data Resilience**: Backup/restore functionality ensures state persistence and disaster recovery

## Project Status

The SDK now comprises **31 specialized crates**, each addressing specific concerns in the multi-agent autonomy domain while maintaining the offline-first philosophy and distributed systems focus. The codebase has grown to support:

- **Core infrastructure**: Mesh transport, state synchronization, consensus, planning
- **Advanced features**: Fault tolerance, security, profiling, cloud integration
- **Specialized domains**: IoT interfaces, blockchain, Kubernetes, edge computing
- **New capabilities**: API integration, ML model management, event-driven architecture

The project continues to evolve as a comprehensive framework for building resilient, distributed multi-agent systems that can operate effectively in offline and constrained environments.

Author: sorydima

Cargo.toml

@@ -28,6 +28,19 @@ members = [
     "crates/dependency-graph",
     "crates/autoscaling",
     "crates/monitoring-integration",
+    "crates/data-versioning",
+    "crates/distributed-cache",
+    "crates/database-integration",
+    "crates/rbac",
+    "crates/distributed-debugger",
+    "crates/agent-lifecycle",
+    "crates/geospatial",
+    "crates/auction-mechanism",
+    "crates/knowledge-graph",
+    "crates/api-integration",
+    "crates/ml-model-versioning",
+    "crates/event-driven",
+    "crates/backup-restore",
 ]
 resolver = "2"
 

crates/agent-lifecycle/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "agent-lifecycle"
+version = "0.1.0"
+edition = "2021"
+description = "Agent lifecycle management for offline-first multi-agent systems"
+license = "MIT OR Apache-2.0"
+authors = ["Offline-First Multi-Agent Autonomy SDK Contributors"]
+repository = "https://github.com/your-org/Offline-First-Multi-Agent-Autonomy-SDK"
+readme = "README.md"
+
+[dependencies]
+tokio = { workspace = true, features = ["sync", "time", "macros"] }
+serde = { workspace = true }
+anyhow = { workspace = true }
+thiserror = { workspace = true }
+tracing = { workspace = true }
+async-trait = { workspace = true }
+futures = { workspace = true }
+bytes = { workspace = true }
+serde_json = { workspace = true }
+
+# Internal dependencies
+common = { path = "../common" }
+mesh-transport = { path = "../mesh-transport" }
+agent-core = { path = "../agent-core" }
+resource-monitor = { path = "../resource-monitor" }
+
+[dev-dependencies]
+tokio = { workspace = true, features = ["full"] }
+tracing-subscriber = { workspace = true }

crates/agent-lifecycle/src/error.rs

@@ -0,0 +1,54 @@
+//! Error types for agent lifecycle management.
+
+use thiserror::Error;
+
+/// Errors that can occur in agent lifecycle management.
+#[derive(Error, Debug)]
+pub enum LifecycleError {
+    /// Agent is already in the requested state.
+    #[error("Agent {0} is already {1}")]
+    AlreadyInState(u64, String),
+
+    /// Agent not found.
+    #[error("Agent {0} not found")]
+    AgentNotFound(u64),
+
+    /// Invalid state transition.
+    #[error("Cannot transition from {0} to {1}")]
+    InvalidTransition(String, String),
+
+    /// Timeout during operation.
+    #[error("Operation timed out: {0}")]
+    Timeout(String),
+
+    /// Health check failed.
+    #[error("Health check failed: {0}")]
+    HealthCheckFailed(String),
+
+    /// Dependency error.
+    #[error("Dependency error: {0}")]
+    DependencyError(String),
+
+    /// Configuration error.
+    #[error("Configuration error: {0}")]
+    ConfigError(String),
+
+    /// Transport error.
+    #[error("Transport error: {0}")]
+    TransportError(#[from] mesh_transport::Error),
+
+    /// Resource monitor error.
+    #[error("Resource monitor error: {0}")]
+    ResourceMonitorError(#[from] resource_monitor::Error),
+
+    /// Internal error.
+    #[error("Internal error: {0}")]
+    Internal(String),
+
+    /// Serialization/deserialization error.
+    #[error("Serialization error: {0}")]
+    Serialization(#[from] serde_json::Error),
+}
+
+/// Result type for lifecycle operations.
+pub type Result<T> = std::result::Result<T, LifecycleError>;