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This commit implements Phase 2 of the CHORUS Task Execution Engine development plan, providing a comprehensive execution environment abstraction layer with Docker container sandboxing support. ## New Features ### Core Sandbox Interface - Comprehensive ExecutionSandbox interface with isolated task execution - Support for command execution, file I/O, environment management - Resource usage monitoring and sandbox lifecycle management - Standardized error handling with SandboxError types and categories ### Docker Container Sandbox Implementation - Full Docker API integration with secure container creation - Transparent repository mounting with configurable read/write access - Advanced security policies with capability dropping and privilege controls - Comprehensive resource limits (CPU, memory, disk, processes, file handles) - Support for tmpfs mounts, masked paths, and read-only bind mounts - Container lifecycle management with proper cleanup and health monitoring ### Security & Resource Management - Configurable security policies with SELinux, AppArmor, and Seccomp support - Fine-grained capability management with secure defaults - Network isolation options with configurable DNS and proxy settings - Resource monitoring with real-time CPU, memory, and network usage tracking - Comprehensive ulimits configuration for process and file handle limits ### Repository Integration - Seamless repository mounting from local paths to container workspaces - Git configuration support with user credentials and global settings - File inclusion/exclusion patterns for selective repository access - Configurable permissions and ownership for mounted repositories ### Testing Infrastructure - Comprehensive test suite with 60+ test cases covering all functionality - Docker integration tests with Alpine Linux containers (skipped in short mode) - Mock sandbox implementation for unit testing without Docker dependencies - Security policy validation tests with read-only filesystem enforcement - Resource usage monitoring and cleanup verification tests ## Technical Details ### Dependencies Added - github.com/docker/docker v28.4.0+incompatible - Docker API client - github.com/docker/go-connections v0.6.0 - Docker connection utilities - github.com/docker/go-units v0.5.0 - Docker units and formatting - Associated Docker API dependencies for complete container management ### Architecture - Interface-driven design enabling multiple sandbox implementations - Comprehensive configuration structures for all sandbox aspects - Resource usage tracking with detailed metrics collection - Error handling with retryable error classification - Proper cleanup and resource management throughout sandbox lifecycle ### Compatibility - Maintains backward compatibility with existing CHORUS architecture - Designed for future integration with Phase 3 Core Task Execution Engine - Extensible design supporting additional sandbox implementations (VM, process) This Phase 2 implementation provides the foundation for secure, isolated task execution that will be integrated with the AI model providers from Phase 1 in the upcoming Phase 3 development. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
CHORUS – Container-First Context Platform (Alpha)
CHORUS is the runtime that ties the CHORUS ecosystem together: libp2p mesh, DHT-backed storage, council/task coordination, and (eventually) SLURP contextual intelligence. The repository you are looking at is the in-progress container-first refactor. Several core systems boot today, but higher-level services (SLURP, SHHH, full HMMM routing) are still landing.
Current Status
| Area | Status | Notes |
|---|---|---|
| libp2p node + PubSub | ✅ Running | internal/runtime/shared.go spins up the mesh, hypercore logging, availability broadcasts. |
| DHT + DecisionPublisher | ✅ Running | Encrypted storage wired through pkg/dht; decisions written via ucxl.DecisionPublisher. |
| Leader Election System | ✅ FULLY FUNCTIONAL | 🎉 MILESTONE: Complete admin election with consensus, discovery protocol, heartbeats, and SLURP activation! |
| SLURP (context intelligence) | 🚧 Stubbed | pkg/slurp/slurp.go contains TODOs for resolver, temporal graphs, intelligence. Leader integration scaffolding exists but uses placeholder IDs/request forwarding. |
| SHHH (secrets sentinel) | 🚧 Sentinel live | pkg/shhh redacts hypercore + PubSub payloads with audit + metrics hooks (policy replay TBD). |
| HMMM routing | 🚧 Partial | PubSub topics join, but capability/role announcements and HMMM router wiring are placeholders (internal/runtime/agent_support.go). |
See docs/progress/CHORUS-WHOOSH-development-plan.md for the detailed build plan and docs/progress/CHORUS-WHOOSH-roadmap.md for sequencing.
Quick Start (Alpha)
The container-first workflows are still evolving; expect frequent changes.
git clone https://gitea.chorus.services/tony/CHORUS.git
cd CHORUS
cp docker/chorus.env.example docker/chorus.env
# adjust env vars (KACHING license, bootstrap peers, etc.)
docker compose -f docker/docker-compose.yml up --build
You’ll get a single agent container with:
- libp2p networking (mDNS + configured bootstrap peers)
- election heartbeat
- DHT storage (AGE-encrypted)
- HTTP API + health endpoints
Missing today: SLURP context resolution, advanced SHHH policy replay, HMMM per-issue routing. Expect log warnings/TODOs for those paths.
🎉 Leader Election System (NEW!)
CHORUS now features a complete, production-ready leader election system:
Core Features
- Consensus-based election with weighted scoring (uptime, capabilities, resources)
- Admin discovery protocol for network-wide leader identification
- Heartbeat system with automatic failover (15-second intervals)
- Concurrent election prevention with randomized delays
- SLURP activation on elected admin nodes
How It Works
- Bootstrap: Nodes start in idle state, no admin known
- Discovery: Nodes send discovery requests to find existing admin
- Election trigger: If no admin found after grace period, trigger election
- Candidacy: Eligible nodes announce themselves with capability scores
- Consensus: Network selects winner based on highest score
- Leadership: Winner starts heartbeats, activates SLURP functionality
- Monitoring: Nodes continuously verify admin health via heartbeats
Debugging
Use these log patterns to monitor election health:
# Monitor WHOAMI messages and leader identification
docker service logs CHORUS_chorus | grep "🤖 WHOAMI\|👑\|📡.*Discovered"
# Track election cycles
docker service logs CHORUS_chorus | grep "🗳️\|📢.*candidacy\|🏆.*winner"
# Watch discovery protocol
docker service logs CHORUS_chorus | grep "📩\|📤\|📥"
Roadmap Highlights
- Security substrate – land SHHH sentinel, finish SLURP leader-only operations, validate COOEE enrolment (see roadmap Phase 1).
- Autonomous teams – coordinate with WHOOSH for deployment telemetry + SLURP context export.
- UCXL + KACHING – hook runtime telemetry into KACHING and enforce UCXL validator.
Track progress via the shared roadmap and weekly burndown dashboards.
Related Projects
- WHOOSH – council/team orchestration
- KACHING – telemetry/licensing
- SLURP – contextual intelligence prototypes
- HMMM – meta-discussion layer
Contributing
This repo is still alpha. Please coordinate via the roadmap tickets before landing changes. Major security/runtime decisions should include a Decision Record with a UCXL address so SLURP/BUBBLE can ingest it later.