docs: Add Phase 3 coordination and infrastructure documentation
Comprehensive documentation for coordination, messaging, discovery, and internal systems. Core Coordination Packages: - pkg/election - Democratic leader election (uptime-based, heartbeat mechanism, SLURP integration) - pkg/coordination - Meta-coordination with dependency detection (4 built-in rules) - coordinator/ - Task orchestration and assignment (AI-powered scoring) - discovery/ - mDNS peer discovery (automatic LAN detection) Messaging & P2P Infrastructure: - pubsub/ - GossipSub messaging (31 message types, role-based topics, HMMM integration) - p2p/ - libp2p networking (DHT modes, connection management, security) Monitoring & Health: - pkg/metrics - Prometheus metrics (80+ metrics across 12 categories) - pkg/health - Health monitoring (4 HTTP endpoints, enhanced checks, graceful degradation) Internal Systems: - internal/licensing - License validation (KACHING integration, cluster leases, fail-closed) - internal/hapui - Human Agent Portal UI (9 commands, HMMM wizard, UCXL browser, decision voting) - internal/backbeat - P2P operation telemetry (6 phases, beat synchronization, health reporting) Documentation Statistics (Phase 3): - 10 packages documented (~18,000 lines) - 31 PubSub message types cataloged - 80+ Prometheus metrics documented - Complete API references with examples - Integration patterns and best practices Key Features Documented: - Election: 5 triggers, candidate scoring (5 weighted components), stability windows - Coordination: AI-powered dependency detection, cross-repo sessions, escalation handling - PubSub: Topic patterns, message envelopes, SHHH redaction, Hypercore logging - Metrics: All metric types with labels, Prometheus scrape config, alert rules - Health: Liveness vs readiness, critical checks, Kubernetes integration - Licensing: Grace periods, circuit breaker, cluster lease management - HAP UI: Interactive terminal commands, HMMM composition wizard, web interface (beta) - BACKBEAT: 6-phase operation tracking, beat budget estimation, drift detection Implementation Status Marked: - ✅ Production: Election, metrics, health, licensing, pubsub, p2p, discovery, coordinator - 🔶 Beta: HAP web interface, BACKBEAT telemetry, advanced coordination - 🔷 Alpha: SLURP election scoring - ⚠️ Experimental: Meta-coordination, AI-powered dependency detection Progress: 22/62 files complete (35%) Next Phase: AI providers, SLURP system, API layer, reasoning engine 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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# Package: pkg/coordination
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**Location**: `/home/tony/chorus/project-queues/active/CHORUS/pkg/coordination/`
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## Overview
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The `pkg/coordination` package provides **advanced cross-repository coordination primitives** for managing complex task dependencies and multi-agent collaboration in CHORUS. It includes AI-powered dependency detection, meta-coordination sessions, and automated escalation handling to enable sophisticated distributed development workflows.
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## Architecture
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### Coordination Layers
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```
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┌─────────────────────────────────────────────────┐
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│ MetaCoordinator │
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│ - Session management │
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│ - AI-powered coordination planning │
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│ - Escalation handling │
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│ - SLURP integration │
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└─────────────────┬───────────────────────────────┘
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│
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┌─────────────────▼───────────────────────────────┐
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│ DependencyDetector │
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│ - Cross-repo dependency detection │
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│ - Rule-based pattern matching │
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│ - Relationship analysis │
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└─────────────────┬───────────────────────────────┘
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│
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┌─────────────────▼───────────────────────────────┐
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│ PubSub (HMMM Meta-Discussion) │
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│ - Coordination messages │
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│ - Session broadcasts │
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│ - Escalation notifications │
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└─────────────────────────────────────────────────┘
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```
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## Core Components
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### MetaCoordinator
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Manages advanced cross-repository coordination and multi-agent collaboration sessions.
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```go
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type MetaCoordinator struct {
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pubsub *pubsub.PubSub
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ctx context.Context
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dependencyDetector *DependencyDetector
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slurpIntegrator *integration.SlurpEventIntegrator
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// Active coordination sessions
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activeSessions map[string]*CoordinationSession
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sessionLock sync.RWMutex
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// Configuration
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maxSessionDuration time.Duration // Default: 30 minutes
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maxParticipants int // Default: 5
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escalationThreshold int // Default: 10 messages
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}
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```
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**Key Responsibilities:**
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- Create and manage coordination sessions
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- Generate AI-powered coordination plans
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- Monitor session progress and health
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- Escalate to humans when needed
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- Generate SLURP events from coordination outcomes
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- Integrate with HMMM for meta-discussion
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### DependencyDetector
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Analyzes tasks across repositories to detect relationships and dependencies.
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```go
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type DependencyDetector struct {
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pubsub *pubsub.PubSub
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ctx context.Context
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knownTasks map[string]*TaskContext
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dependencyRules []DependencyRule
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coordinationHops int // Default: 3
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}
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```
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**Key Responsibilities:**
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- Track tasks across multiple repositories
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- Apply pattern-based dependency detection rules
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- Identify task relationships (API contracts, schema changes, etc.)
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- Broadcast dependency alerts
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- Trigger coordination sessions
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### CoordinationSession
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Represents an active multi-agent coordination session.
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```go
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type CoordinationSession struct {
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SessionID string
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Type string // dependency, conflict, planning
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Participants map[string]*Participant
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TasksInvolved []*TaskContext
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Messages []CoordinationMessage
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Status string // active, resolved, escalated
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CreatedAt time.Time
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LastActivity time.Time
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Resolution string
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EscalationReason string
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}
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```
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**Session Types:**
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- **dependency**: Coordinating dependent tasks across repos
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- **conflict**: Resolving conflicts or competing changes
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- **planning**: Joint planning for complex multi-repo features
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**Session States:**
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- **active**: Session in progress
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- **resolved**: Consensus reached, coordination complete
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- **escalated**: Requires human intervention
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## Data Structures
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### TaskContext
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Represents a task with its repository and project context for dependency analysis.
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```go
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type TaskContext struct {
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TaskID int
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ProjectID int
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Repository string
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Title string
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Description string
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Keywords []string
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AgentID string
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ClaimedAt time.Time
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}
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```
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### Participant
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Represents an agent participating in a coordination session.
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```go
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type Participant struct {
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AgentID string
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PeerID string
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Repository string
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Capabilities []string
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LastSeen time.Time
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Active bool
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}
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```
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### CoordinationMessage
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A message within a coordination session.
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```go
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type CoordinationMessage struct {
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MessageID string
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FromAgentID string
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FromPeerID string
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Content string
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MessageType string // proposal, question, agreement, concern
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Timestamp time.Time
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Metadata map[string]interface{}
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}
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```
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**Message Types:**
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- **proposal**: Proposed solution or approach
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- **question**: Request for clarification
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- **agreement**: Agreement with proposal
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- **concern**: Concern or objection
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### TaskDependency
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Represents a detected relationship between tasks.
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```go
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type TaskDependency struct {
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Task1 *TaskContext
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Task2 *TaskContext
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Relationship string // Rule name (e.g., "API_Contract")
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Confidence float64 // 0.0 - 1.0
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Reason string // Human-readable explanation
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DetectedAt time.Time
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}
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```
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### DependencyRule
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Defines how to detect task relationships.
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```go
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type DependencyRule struct {
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Name string
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Description string
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Keywords []string
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Validator func(task1, task2 *TaskContext) (bool, string)
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}
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```
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## Dependency Detection
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### Built-in Detection Rules
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#### 1. API Contract Rule
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Detects dependencies between API definitions and implementations.
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```go
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{
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Name: "API_Contract",
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Description: "Tasks involving API contracts and implementations",
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Keywords: []string{"api", "endpoint", "contract", "interface", "schema"},
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Validator: func(task1, task2 *TaskContext) (bool, string) {
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text1 := strings.ToLower(task1.Title + " " + task1.Description)
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text2 := strings.ToLower(task2.Title + " " + task2.Description)
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if (strings.Contains(text1, "api") && strings.Contains(text2, "implement")) ||
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(strings.Contains(text2, "api") && strings.Contains(text1, "implement")) {
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return true, "API definition and implementation dependency"
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}
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return false, ""
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},
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}
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```
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**Example Detection:**
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- Task 1: "Define user authentication API"
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- Task 2: "Implement authentication endpoint"
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- **Detected**: API_Contract dependency
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#### 2. Database Schema Rule
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Detects schema changes affecting multiple services.
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```go
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{
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Name: "Database_Schema",
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Description: "Database schema changes affecting multiple services",
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Keywords: []string{"database", "schema", "migration", "table", "model"},
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Validator: func(task1, task2 *TaskContext) (bool, string) {
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// Checks for database-related keywords in both tasks
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// Returns true if both tasks involve database work
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},
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}
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```
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**Example Detection:**
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- Task 1: "Add user preferences table"
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- Task 2: "Update user service for preferences"
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- **Detected**: Database_Schema dependency
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#### 3. Configuration Dependency Rule
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Detects configuration changes affecting multiple components.
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```go
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{
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Name: "Configuration_Dependency",
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Description: "Configuration changes affecting multiple components",
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Keywords: []string{"config", "environment", "settings", "parameters"},
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}
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```
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**Example Detection:**
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- Task 1: "Add feature flag for new UI"
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- Task 2: "Implement feature flag checks in backend"
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- **Detected**: Configuration_Dependency
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#### 4. Security Compliance Rule
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Detects security changes requiring coordinated implementation.
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```go
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{
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Name: "Security_Compliance",
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Description: "Security changes requiring coordinated implementation",
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Keywords: []string{"security", "auth", "permission", "token", "encrypt"},
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}
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```
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**Example Detection:**
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- Task 1: "Implement JWT token refresh"
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- Task 2: "Update authentication middleware"
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- **Detected**: Security_Compliance dependency
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### Custom Rules
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Add project-specific dependency detection:
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```go
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customRule := DependencyRule{
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Name: "GraphQL_Schema",
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Description: "GraphQL schema and resolver dependencies",
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Keywords: []string{"graphql", "schema", "resolver", "query", "mutation"},
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Validator: func(task1, task2 *TaskContext) (bool, string) {
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text1 := strings.ToLower(task1.Title + " " + task1.Description)
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text2 := strings.ToLower(task2.Title + " " + task2.Description)
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hasSchema := strings.Contains(text1, "schema") || strings.Contains(text2, "schema")
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hasResolver := strings.Contains(text1, "resolver") || strings.Contains(text2, "resolver")
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if hasSchema && hasResolver {
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return true, "GraphQL schema and resolver must be coordinated"
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}
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return false, ""
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},
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}
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dependencyDetector.AddCustomRule(customRule)
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```
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## Coordination Flow
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### 1. Task Registration and Detection
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```
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Task Claimed by Agent A → RegisterTask() → DependencyDetector
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↓
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detectDependencies()
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↓
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Apply all dependency rules to known tasks
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↓
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Dependency detected? → Yes → announceDependency()
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↓ ↓
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No MetaCoordinator
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```
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### 2. Dependency Announcement
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```go
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// Dependency detector announces to HMMM meta-discussion
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coordMsg := map[string]interface{}{
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"message_type": "dependency_detected",
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"dependency": dep,
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"coordination_request": "Cross-repository dependency detected...",
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"agents_involved": [agentA, agentB],
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"repositories": [repoA, repoB],
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"hop_count": 0,
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"max_hops": 3,
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}
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pubsub.PublishHmmmMessage(MetaDiscussion, coordMsg)
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```
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### 3. Session Creation
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```
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MetaCoordinator receives dependency_detected message
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↓
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handleDependencyDetection()
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↓
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Create CoordinationSession
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↓
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Add participating agents
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↓
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Generate AI coordination plan
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↓
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Broadcast plan to participants
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```
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### 4. AI-Powered Coordination Planning
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```go
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prompt := `
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You are an expert AI project coordinator managing a distributed development team.
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SITUATION:
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- A dependency has been detected between two tasks in different repositories
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- Task 1: repo1/title #42 (Agent: agent-001)
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- Task 2: repo2/title #43 (Agent: agent-002)
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- Relationship: API_Contract
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- Reason: API definition and implementation dependency
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COORDINATION REQUIRED:
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Generate a concise coordination plan that addresses:
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1. What specific coordination is needed between the agents
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2. What order should tasks be completed in (if any)
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3. What information/artifacts need to be shared
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4. What potential conflicts to watch for
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5. Success criteria for coordinated completion
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`
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plan := reasoning.GenerateResponse(ctx, "phi3", prompt)
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```
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**Plan Output Example:**
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```
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COORDINATION PLAN:
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1. SEQUENCE:
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- Task 1 (API definition) must be completed first
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- Task 2 (implementation) depends on finalized API contract
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2. INFORMATION SHARING:
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- Agent-001 must share: API specification document, endpoint definitions
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- Agent-002 must share: Implementation plan, integration tests
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3. COORDINATION POINTS:
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- Review API spec before implementation begins
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- Daily sync on implementation progress
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- Joint testing before completion
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4. POTENTIAL CONFLICTS:
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- API spec changes during implementation
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- Performance requirements not captured in spec
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- Authentication/authorization approach
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5. SUCCESS CRITERIA:
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- API spec reviewed and approved
|
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- Implementation matches spec
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- Integration tests pass
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- Documentation complete
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```
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### 5. Session Progress Monitoring
|
||||
|
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```
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Agents respond to coordination plan
|
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↓
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handleCoordinationResponse()
|
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↓
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Add message to session
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↓
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Update participant activity
|
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↓
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evaluateSessionProgress()
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↓
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┌──────────────────────┐
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│ Check conditions: │
|
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│ - Message count │
|
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│ - Session duration │
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│ - Agreement keywords │
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└──────┬───────────────┘
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│
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┌──────▼──────┬──────────────┐
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||||
│ │ │
|
||||
Consensus? Too long? Too many msgs?
|
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│ │ │
|
||||
Resolved Escalate Escalate
|
||||
```
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|
||||
### 6. Session Resolution
|
||||
|
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**Consensus Reached:**
|
||||
```go
|
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// Detect agreement in recent messages
|
||||
agreementKeywords := []string{
|
||||
"agree", "sounds good", "approved", "looks good", "confirmed"
|
||||
}
|
||||
|
||||
if agreementCount >= len(participants)-1 {
|
||||
resolveSession(session, "Consensus reached among participants")
|
||||
}
|
||||
```
|
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|
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**Session Resolved:**
|
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1. Update session status to "resolved"
|
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2. Record resolution reason
|
||||
3. Generate SLURP event (if integrator available)
|
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4. Broadcast resolution to participants
|
||||
5. Clean up after timeout
|
||||
|
||||
### 7. Session Escalation
|
||||
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**Escalation Triggers:**
|
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- Message count exceeds threshold (default: 10)
|
||||
- Session duration exceeds limit (default: 30 minutes)
|
||||
- Explicit escalation request from agent
|
||||
|
||||
**Escalation Process:**
|
||||
```go
|
||||
escalateSession(session, reason)
|
||||
↓
|
||||
Update status to "escalated"
|
||||
↓
|
||||
Generate SLURP event for human review
|
||||
↓
|
||||
Broadcast escalation notification
|
||||
↓
|
||||
Human intervention required
|
||||
```
|
||||
|
||||
## SLURP Integration
|
||||
|
||||
### Event Generation from Sessions
|
||||
|
||||
When sessions are resolved or escalated, the MetaCoordinator generates SLURP events:
|
||||
|
||||
```go
|
||||
discussionContext := integration.HmmmDiscussionContext{
|
||||
DiscussionID: session.SessionID,
|
||||
SessionID: session.SessionID,
|
||||
Participants: [agentIDs],
|
||||
StartTime: session.CreatedAt,
|
||||
EndTime: session.LastActivity,
|
||||
Messages: hmmmMessages,
|
||||
ConsensusReached: (outcome == "resolved"),
|
||||
ConsensusStrength: 0.9, // 0.3 for escalated, 0.5 for other
|
||||
OutcomeType: outcome, // "resolved" or "escalated"
|
||||
ProjectPath: projectPath,
|
||||
RelatedTasks: [taskIDs],
|
||||
Metadata: {
|
||||
"session_type": session.Type,
|
||||
"session_status": session.Status,
|
||||
"resolution": session.Resolution,
|
||||
"escalation_reason": session.EscalationReason,
|
||||
"message_count": len(session.Messages),
|
||||
"participant_count": len(session.Participants),
|
||||
},
|
||||
}
|
||||
|
||||
slurpIntegrator.ProcessHmmmDiscussion(ctx, discussionContext)
|
||||
```
|
||||
|
||||
**SLURP Event Outcomes:**
|
||||
- **Resolved sessions**: High consensus (0.9), successful coordination
|
||||
- **Escalated sessions**: Low consensus (0.3), human intervention needed
|
||||
- **Other outcomes**: Medium consensus (0.5)
|
||||
|
||||
### Policy Learning
|
||||
|
||||
SLURP uses coordination session data to learn:
|
||||
- Effective coordination patterns
|
||||
- Common dependency types
|
||||
- Escalation triggers
|
||||
- Agent collaboration efficiency
|
||||
- Task complexity indicators
|
||||
|
||||
## PubSub Message Types
|
||||
|
||||
### 1. dependency_detected
|
||||
|
||||
Announces a detected dependency between tasks.
|
||||
|
||||
```json
|
||||
{
|
||||
"message_type": "dependency_detected",
|
||||
"dependency": {
|
||||
"task1": {
|
||||
"task_id": 42,
|
||||
"project_id": 1,
|
||||
"repository": "backend-api",
|
||||
"title": "Define user authentication API",
|
||||
"agent_id": "agent-001"
|
||||
},
|
||||
"task2": {
|
||||
"task_id": 43,
|
||||
"project_id": 2,
|
||||
"repository": "frontend-app",
|
||||
"title": "Implement login page",
|
||||
"agent_id": "agent-002"
|
||||
},
|
||||
"relationship": "API_Contract",
|
||||
"confidence": 0.8,
|
||||
"reason": "API definition and implementation dependency",
|
||||
"detected_at": "2025-09-30T10:00:00Z"
|
||||
},
|
||||
"coordination_request": "Cross-repository dependency detected...",
|
||||
"agents_involved": ["agent-001", "agent-002"],
|
||||
"repositories": ["backend-api", "frontend-app"],
|
||||
"hop_count": 0,
|
||||
"max_hops": 3
|
||||
}
|
||||
```
|
||||
|
||||
### 2. coordination_plan
|
||||
|
||||
Broadcasts AI-generated coordination plan to participants.
|
||||
|
||||
```json
|
||||
{
|
||||
"message_type": "coordination_plan",
|
||||
"session_id": "dep_1_42_1727692800",
|
||||
"plan": "COORDINATION PLAN:\n1. SEQUENCE:\n...",
|
||||
"tasks_involved": [taskContext1, taskContext2],
|
||||
"participants": {
|
||||
"agent-001": { "agent_id": "agent-001", "repository": "backend-api" },
|
||||
"agent-002": { "agent_id": "agent-002", "repository": "frontend-app" }
|
||||
},
|
||||
"message": "Coordination plan generated for dependency: API_Contract"
|
||||
}
|
||||
```
|
||||
|
||||
### 3. coordination_response
|
||||
|
||||
Agent response to coordination plan or session message.
|
||||
|
||||
```json
|
||||
{
|
||||
"message_type": "coordination_response",
|
||||
"session_id": "dep_1_42_1727692800",
|
||||
"agent_id": "agent-001",
|
||||
"response": "I agree with the proposed sequence. API spec will be ready by EOD.",
|
||||
"timestamp": "2025-09-30T10:05:00Z"
|
||||
}
|
||||
```
|
||||
|
||||
### 4. session_message
|
||||
|
||||
General message within a coordination session.
|
||||
|
||||
```json
|
||||
{
|
||||
"message_type": "session_message",
|
||||
"session_id": "dep_1_42_1727692800",
|
||||
"from_agent": "agent-002",
|
||||
"content": "Can we schedule a quick sync to review the API spec?",
|
||||
"timestamp": "2025-09-30T10:10:00Z"
|
||||
}
|
||||
```
|
||||
|
||||
### 5. escalation
|
||||
|
||||
Session escalated to human intervention.
|
||||
|
||||
```json
|
||||
{
|
||||
"message_type": "escalation",
|
||||
"session_id": "dep_1_42_1727692800",
|
||||
"escalation_reason": "Message limit exceeded - human intervention needed",
|
||||
"session_summary": "Session dep_1_42_1727692800 (dependency): 2 participants, 12 messages, duration 35m",
|
||||
"participants": { /* participant info */ },
|
||||
"tasks_involved": [ /* task contexts */ ],
|
||||
"requires_human": true
|
||||
}
|
||||
```
|
||||
|
||||
### 6. resolution
|
||||
|
||||
Session successfully resolved.
|
||||
|
||||
```json
|
||||
{
|
||||
"message_type": "resolution",
|
||||
"session_id": "dep_1_42_1727692800",
|
||||
"resolution": "Consensus reached among participants",
|
||||
"summary": "Session dep_1_42_1727692800 (dependency): 2 participants, 8 messages, duration 15m"
|
||||
}
|
||||
```
|
||||
|
||||
## Usage Examples
|
||||
|
||||
### Basic Setup
|
||||
|
||||
```go
|
||||
import (
|
||||
"context"
|
||||
"chorus/pkg/coordination"
|
||||
"chorus/pubsub"
|
||||
)
|
||||
|
||||
// Create MetaCoordinator
|
||||
mc := coordination.NewMetaCoordinator(ctx, pubsubInstance)
|
||||
|
||||
// Optionally attach SLURP integrator
|
||||
mc.SetSlurpIntegrator(slurpIntegrator)
|
||||
|
||||
// MetaCoordinator automatically:
|
||||
// - Initializes DependencyDetector
|
||||
// - Sets up HMMM message handlers
|
||||
// - Starts session cleanup loop
|
||||
```
|
||||
|
||||
### Register Tasks for Dependency Detection
|
||||
|
||||
```go
|
||||
// Agent claims a task
|
||||
taskContext := &coordination.TaskContext{
|
||||
TaskID: 42,
|
||||
ProjectID: 1,
|
||||
Repository: "backend-api",
|
||||
Title: "Define user authentication API",
|
||||
Description: "Create OpenAPI spec for user auth endpoints",
|
||||
Keywords: []string{"api", "authentication", "openapi"},
|
||||
AgentID: "agent-001",
|
||||
ClaimedAt: time.Now(),
|
||||
}
|
||||
|
||||
mc.dependencyDetector.RegisterTask(taskContext)
|
||||
```
|
||||
|
||||
### Add Custom Dependency Rule
|
||||
|
||||
```go
|
||||
// Add project-specific rule
|
||||
microserviceRule := coordination.DependencyRule{
|
||||
Name: "Microservice_Interface",
|
||||
Description: "Microservice interface and consumer dependencies",
|
||||
Keywords: []string{"microservice", "interface", "consumer", "producer"},
|
||||
Validator: func(task1, task2 *coordination.TaskContext) (bool, string) {
|
||||
t1 := strings.ToLower(task1.Title + " " + task1.Description)
|
||||
t2 := strings.ToLower(task2.Title + " " + task2.Description)
|
||||
|
||||
hasProducer := strings.Contains(t1, "producer") || strings.Contains(t2, "producer")
|
||||
hasConsumer := strings.Contains(t1, "consumer") || strings.Contains(t2, "consumer")
|
||||
|
||||
if hasProducer && hasConsumer {
|
||||
return true, "Microservice producer and consumer must coordinate"
|
||||
}
|
||||
return false, ""
|
||||
},
|
||||
}
|
||||
|
||||
mc.dependencyDetector.AddCustomRule(microserviceRule)
|
||||
```
|
||||
|
||||
### Query Active Sessions
|
||||
|
||||
```go
|
||||
// Get all active coordination sessions
|
||||
sessions := mc.GetActiveSessions()
|
||||
|
||||
for sessionID, session := range sessions {
|
||||
fmt.Printf("Session %s:\n", sessionID)
|
||||
fmt.Printf(" Type: %s\n", session.Type)
|
||||
fmt.Printf(" Status: %s\n", session.Status)
|
||||
fmt.Printf(" Participants: %d\n", len(session.Participants))
|
||||
fmt.Printf(" Messages: %d\n", len(session.Messages))
|
||||
fmt.Printf(" Duration: %v\n", time.Since(session.CreatedAt))
|
||||
}
|
||||
```
|
||||
|
||||
### Monitor Coordination Events
|
||||
|
||||
```go
|
||||
// Set custom HMMM message handler
|
||||
pubsub.SetHmmmMessageHandler(func(msg pubsub.Message, from peer.ID) {
|
||||
switch msg.Data["message_type"] {
|
||||
case "dependency_detected":
|
||||
fmt.Printf("🔗 Dependency detected: %v\n", msg.Data)
|
||||
case "coordination_plan":
|
||||
fmt.Printf("📋 Coordination plan: %v\n", msg.Data)
|
||||
case "escalation":
|
||||
fmt.Printf("🚨 Escalation: %v\n", msg.Data)
|
||||
case "resolution":
|
||||
fmt.Printf("✅ Resolution: %v\n", msg.Data)
|
||||
}
|
||||
})
|
||||
```
|
||||
|
||||
## Configuration
|
||||
|
||||
### MetaCoordinator Configuration
|
||||
|
||||
```go
|
||||
mc := coordination.NewMetaCoordinator(ctx, ps)
|
||||
|
||||
// Adjust session parameters
|
||||
mc.maxSessionDuration = 45 * time.Minute // Extend session timeout
|
||||
mc.maxParticipants = 10 // Support larger teams
|
||||
mc.escalationThreshold = 15 // More messages before escalation
|
||||
```
|
||||
|
||||
### DependencyDetector Configuration
|
||||
|
||||
```go
|
||||
dd := mc.dependencyDetector
|
||||
|
||||
// Adjust coordination hop limit
|
||||
dd.coordinationHops = 5 // Allow deeper meta-discussion chains
|
||||
```
|
||||
|
||||
## Session Lifecycle Management
|
||||
|
||||
### Automatic Cleanup
|
||||
|
||||
Sessions are automatically cleaned up by the session cleanup loop:
|
||||
|
||||
```go
|
||||
// Runs every 10 minutes
|
||||
func (mc *MetaCoordinator) cleanupInactiveSessions() {
|
||||
for sessionID, session := range mc.activeSessions {
|
||||
// Remove sessions older than 2 hours OR already resolved/escalated
|
||||
if time.Since(session.LastActivity) > 2*time.Hour ||
|
||||
session.Status == "resolved" ||
|
||||
session.Status == "escalated" {
|
||||
delete(mc.activeSessions, sessionID)
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
**Cleanup Criteria:**
|
||||
- Session inactive for 2+ hours
|
||||
- Session status is "resolved"
|
||||
- Session status is "escalated"
|
||||
|
||||
### Manual Session Management
|
||||
|
||||
```go
|
||||
// Not exposed in current API, but could be added:
|
||||
|
||||
// Force resolve session
|
||||
mc.resolveSession(session, "Manual resolution by admin")
|
||||
|
||||
// Force escalate session
|
||||
mc.escalateSession(session, "Manual escalation requested")
|
||||
|
||||
// Cancel/close session
|
||||
mc.closeSession(sessionID)
|
||||
```
|
||||
|
||||
## Performance Considerations
|
||||
|
||||
### Memory Usage
|
||||
|
||||
- **TaskContext Storage**: ~500 bytes per task
|
||||
- **Active Sessions**: ~5KB per session (varies with message count)
|
||||
- **Dependency Rules**: ~1KB per rule
|
||||
|
||||
**Typical Usage**: 100 tasks + 10 sessions = ~100KB
|
||||
|
||||
### CPU Usage
|
||||
|
||||
- **Dependency Detection**: O(N²) where N = number of tasks per repository
|
||||
- **Rule Evaluation**: O(R) where R = number of rules
|
||||
- **Session Monitoring**: Periodic evaluation (every message received)
|
||||
|
||||
**Optimization**: Dependency detection skips same-repository comparisons.
|
||||
|
||||
### Network Usage
|
||||
|
||||
- **Dependency Announcements**: ~2KB per dependency
|
||||
- **Coordination Plans**: ~5KB per plan (includes full context)
|
||||
- **Session Messages**: ~1KB per message
|
||||
- **SLURP Events**: ~10KB per event (includes full session history)
|
||||
|
||||
## Best Practices
|
||||
|
||||
### 1. Rule Design
|
||||
|
||||
**Good Rule:**
|
||||
```go
|
||||
// Specific, actionable, clear success criteria
|
||||
{
|
||||
Name: "Database_Migration",
|
||||
Keywords: []string{"migration", "schema", "database"},
|
||||
Validator: func(t1, t2 *TaskContext) (bool, string) {
|
||||
// Clear matching logic
|
||||
// Specific reason returned
|
||||
},
|
||||
}
|
||||
```
|
||||
|
||||
**Bad Rule:**
|
||||
```go
|
||||
// Too broad, unclear coordination needed
|
||||
{
|
||||
Name: "Backend_Tasks",
|
||||
Keywords: []string{"backend"},
|
||||
Validator: func(t1, t2 *TaskContext) (bool, string) {
|
||||
return strings.Contains(t1.Title, "backend") &&
|
||||
strings.Contains(t2.Title, "backend"), "Both backend tasks"
|
||||
},
|
||||
}
|
||||
```
|
||||
|
||||
### 2. Session Participation
|
||||
|
||||
- **Respond promptly**: Keep sessions moving
|
||||
- **Be explicit**: Use clear agreement/disagreement language
|
||||
- **Stay focused**: Don't derail session with unrelated topics
|
||||
- **Escalate when stuck**: Don't let sessions drag on indefinitely
|
||||
|
||||
### 3. AI Plan Quality
|
||||
|
||||
AI plans are most effective when:
|
||||
- Task descriptions are detailed
|
||||
- Dependencies are clear
|
||||
- Agent capabilities are well-defined
|
||||
- Historical context is available
|
||||
|
||||
### 4. SLURP Integration
|
||||
|
||||
For best SLURP learning:
|
||||
- Enable SLURP integrator at startup
|
||||
- Ensure all sessions generate events (resolved or escalated)
|
||||
- Provide rich task metadata
|
||||
- Include project context in task descriptions
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
### Dependencies Not Detected
|
||||
|
||||
**Symptoms**: Related tasks not triggering coordination.
|
||||
|
||||
**Checks:**
|
||||
1. Verify tasks registered with detector: `dd.GetKnownTasks()`
|
||||
2. Check rule keywords match task content
|
||||
3. Test validator logic with task pairs
|
||||
4. Verify tasks are from different repositories
|
||||
5. Check PubSub connection for announcements
|
||||
|
||||
### Sessions Not Escalating
|
||||
|
||||
**Symptoms**: Long-running sessions without escalation.
|
||||
|
||||
**Checks:**
|
||||
1. Verify escalation threshold: `mc.escalationThreshold`
|
||||
2. Check session duration limit: `mc.maxSessionDuration`
|
||||
3. Verify message count in session
|
||||
4. Check for agreement keywords in messages
|
||||
5. Test escalation logic manually
|
||||
|
||||
### AI Plans Not Generated
|
||||
|
||||
**Symptoms**: Sessions created but no coordination plan.
|
||||
|
||||
**Checks:**
|
||||
1. Verify reasoning engine available: `reasoning.GenerateResponse()`
|
||||
2. Check AI model configuration
|
||||
3. Verify network connectivity to AI provider
|
||||
4. Check reasoning engine error logs
|
||||
5. Test with simpler dependency
|
||||
|
||||
### SLURP Events Not Generated
|
||||
|
||||
**Symptoms**: Sessions complete but no SLURP events.
|
||||
|
||||
**Checks:**
|
||||
1. Verify SLURP integrator attached: `mc.SetSlurpIntegrator()`
|
||||
2. Check SLURP integrator initialization
|
||||
3. Verify session outcome triggers event generation
|
||||
4. Check SLURP integrator error logs
|
||||
5. Test event generation manually
|
||||
|
||||
## Future Enhancements
|
||||
|
||||
### Planned Features
|
||||
|
||||
1. **Machine Learning Rules**: Learn dependency patterns from historical data
|
||||
2. **Automated Testing**: Generate integration tests for coordinated tasks
|
||||
3. **Visualization**: Web UI for monitoring active sessions
|
||||
4. **Advanced Metrics**: Track coordination efficiency and success rates
|
||||
5. **Multi-Repo CI/CD**: Coordinate deployments across dependent services
|
||||
6. **Conflict Resolution**: AI-powered conflict resolution suggestions
|
||||
7. **Predictive Coordination**: Predict dependencies before tasks are claimed
|
||||
|
||||
## See Also
|
||||
|
||||
- [coordinator/](coordinator.md) - Task coordinator integration
|
||||
- [pubsub/](../pubsub.md) - PubSub messaging for coordination
|
||||
- [pkg/integration/](integration.md) - SLURP integration
|
||||
- [pkg/hmmm/](hmmm.md) - HMMM meta-discussion system
|
||||
- [reasoning/](../reasoning.md) - AI reasoning engine for planning
|
||||
- [internal/logging/](../internal/logging.md) - Hypercore logging
|
||||
750
docs/comprehensive/packages/coordinator.md
Normal file
750
docs/comprehensive/packages/coordinator.md
Normal file
@@ -0,0 +1,750 @@
|
||||
# Package: coordinator
|
||||
|
||||
**Location**: `/home/tony/chorus/project-queues/active/CHORUS/coordinator/`
|
||||
|
||||
## Overview
|
||||
|
||||
The `coordinator` package provides the **TaskCoordinator** - the main orchestrator for distributed task management in CHORUS. It handles task discovery, intelligent assignment, execution coordination, and real-time progress tracking across multiple repositories and agents. The coordinator integrates with the PubSub system for role-based collaboration and uses AI-powered execution engines for autonomous task completion.
|
||||
|
||||
## Core Components
|
||||
|
||||
### TaskCoordinator
|
||||
|
||||
The central orchestrator managing task lifecycle across the distributed CHORUS network.
|
||||
|
||||
```go
|
||||
type TaskCoordinator struct {
|
||||
pubsub *pubsub.PubSub
|
||||
hlog *logging.HypercoreLog
|
||||
ctx context.Context
|
||||
config *config.Config
|
||||
hmmmRouter *hmmm.Router
|
||||
|
||||
// Repository management
|
||||
providers map[int]repository.TaskProvider // projectID -> provider
|
||||
providerLock sync.RWMutex
|
||||
factory repository.ProviderFactory
|
||||
|
||||
// Task management
|
||||
activeTasks map[string]*ActiveTask // taskKey -> active task
|
||||
taskLock sync.RWMutex
|
||||
taskMatcher repository.TaskMatcher
|
||||
taskTracker TaskProgressTracker
|
||||
|
||||
// Task execution
|
||||
executionEngine execution.TaskExecutionEngine
|
||||
|
||||
// Agent tracking
|
||||
nodeID string
|
||||
agentInfo *repository.AgentInfo
|
||||
|
||||
// Sync settings
|
||||
syncInterval time.Duration
|
||||
lastSync map[int]time.Time
|
||||
syncLock sync.RWMutex
|
||||
}
|
||||
```
|
||||
|
||||
**Key Responsibilities:**
|
||||
- Discover available tasks across multiple repositories
|
||||
- Score and assign tasks based on agent capabilities and expertise
|
||||
- Coordinate task execution with AI-powered execution engines
|
||||
- Track active tasks and broadcast progress updates
|
||||
- Request and coordinate multi-agent collaboration
|
||||
- Integrate with HMMM for meta-discussion and coordination
|
||||
|
||||
### ActiveTask
|
||||
|
||||
Represents a task currently being worked on by an agent.
|
||||
|
||||
```go
|
||||
type ActiveTask struct {
|
||||
Task *repository.Task
|
||||
Provider repository.TaskProvider
|
||||
ProjectID int
|
||||
ClaimedAt time.Time
|
||||
Status string // claimed, working, completed, failed
|
||||
AgentID string
|
||||
Results map[string]interface{}
|
||||
}
|
||||
```
|
||||
|
||||
**Task Lifecycle States:**
|
||||
1. **claimed** - Task has been claimed by an agent
|
||||
2. **working** - Agent is actively executing the task
|
||||
3. **completed** - Task finished successfully
|
||||
4. **failed** - Task execution failed
|
||||
|
||||
### TaskProgressTracker Interface
|
||||
|
||||
Callback interface for tracking task progress and updating availability broadcasts.
|
||||
|
||||
```go
|
||||
type TaskProgressTracker interface {
|
||||
AddTask(taskID string)
|
||||
RemoveTask(taskID string)
|
||||
}
|
||||
```
|
||||
|
||||
This interface ensures availability broadcasts accurately reflect current workload.
|
||||
|
||||
## Task Coordination Flow
|
||||
|
||||
### 1. Initialization
|
||||
|
||||
```go
|
||||
coordinator := NewTaskCoordinator(
|
||||
ctx,
|
||||
ps, // PubSub instance
|
||||
hlog, // Hypercore log
|
||||
cfg, // Agent configuration
|
||||
nodeID, // P2P node ID
|
||||
hmmmRouter, // HMMM router for meta-discussion
|
||||
tracker, // Task progress tracker
|
||||
)
|
||||
|
||||
coordinator.Start()
|
||||
```
|
||||
|
||||
**Initialization Process:**
|
||||
1. Creates agent info from configuration
|
||||
2. Sets up task execution engine with AI providers
|
||||
3. Announces agent role and capabilities via PubSub
|
||||
4. Starts task discovery loop
|
||||
5. Begins listening for role-based messages
|
||||
|
||||
### 2. Task Discovery and Assignment
|
||||
|
||||
**Discovery Loop** (runs every 30 seconds):
|
||||
```
|
||||
taskDiscoveryLoop() ->
|
||||
(Discovery now handled by WHOOSH integration)
|
||||
```
|
||||
|
||||
**Task Evaluation** (`shouldProcessTask`):
|
||||
```go
|
||||
func (tc *TaskCoordinator) shouldProcessTask(task *repository.Task) bool {
|
||||
// 1. Check capacity: currentTasks < maxTasks
|
||||
// 2. Check if already assigned to this agent
|
||||
// 3. Score task fit for agent capabilities
|
||||
// 4. Return true if score > 0.5 threshold
|
||||
}
|
||||
```
|
||||
|
||||
**Task Scoring:**
|
||||
- Agent role matches required role
|
||||
- Agent expertise matches required expertise
|
||||
- Current workload vs capacity
|
||||
- Task priority level
|
||||
- Historical performance scores
|
||||
|
||||
### 3. Task Claiming and Processing
|
||||
|
||||
```
|
||||
processTask() flow:
|
||||
1. Evaluate if collaboration needed (shouldRequestCollaboration)
|
||||
2. Request collaboration via PubSub if needed
|
||||
3. Claim task through repository provider
|
||||
4. Create ActiveTask and store in activeTasks map
|
||||
5. Log claim to Hypercore
|
||||
6. Announce claim via PubSub (TaskProgress message)
|
||||
7. Seed HMMM meta-discussion room for task
|
||||
8. Start execution in background goroutine
|
||||
```
|
||||
|
||||
**Collaboration Request Criteria:**
|
||||
- Task priority >= 8 (high priority)
|
||||
- Task requires expertise agent doesn't have
|
||||
- Complex multi-component tasks
|
||||
|
||||
### 4. Task Execution
|
||||
|
||||
**AI-Powered Execution** (`executeTaskWithAI`):
|
||||
|
||||
```go
|
||||
executionRequest := &execution.TaskExecutionRequest{
|
||||
ID: "repo:taskNumber",
|
||||
Type: determineTaskType(task), // bug_fix, feature_development, etc.
|
||||
Description: buildTaskDescription(task),
|
||||
Context: buildTaskContext(task),
|
||||
Requirements: &execution.TaskRequirements{
|
||||
AIModel: "", // Auto-selected based on role
|
||||
SandboxType: "docker",
|
||||
RequiredTools: []string{"git", "curl"},
|
||||
EnvironmentVars: map[string]string{
|
||||
"TASK_ID": taskID,
|
||||
"REPOSITORY": repoName,
|
||||
"AGENT_ID": agentID,
|
||||
"AGENT_ROLE": agentRole,
|
||||
},
|
||||
},
|
||||
Timeout: 10 * time.Minute,
|
||||
}
|
||||
|
||||
result := tc.executionEngine.ExecuteTask(ctx, executionRequest)
|
||||
```
|
||||
|
||||
**Task Type Detection:**
|
||||
- **bug_fix** - Keywords: "bug", "fix"
|
||||
- **feature_development** - Keywords: "feature", "implement"
|
||||
- **testing** - Keywords: "test"
|
||||
- **documentation** - Keywords: "doc", "documentation"
|
||||
- **refactoring** - Keywords: "refactor"
|
||||
- **code_review** - Keywords: "review"
|
||||
- **development** - Default for general tasks
|
||||
|
||||
**Fallback Mock Execution:**
|
||||
If AI execution engine is unavailable or fails, falls back to mock execution with simulated work time.
|
||||
|
||||
### 5. Task Completion
|
||||
|
||||
```
|
||||
executeTask() completion flow:
|
||||
1. Update ActiveTask status to "completed"
|
||||
2. Complete task through repository provider
|
||||
3. Remove from activeTasks map
|
||||
4. Update TaskProgressTracker
|
||||
5. Log completion to Hypercore
|
||||
6. Announce completion via PubSub
|
||||
```
|
||||
|
||||
**Task Result Structure:**
|
||||
```go
|
||||
type TaskResult struct {
|
||||
Success bool
|
||||
Message string
|
||||
Metadata map[string]interface{} // Includes:
|
||||
// - execution_type (ai_powered/mock)
|
||||
// - duration
|
||||
// - commands_executed
|
||||
// - files_generated
|
||||
// - resource_usage
|
||||
// - artifacts
|
||||
}
|
||||
```
|
||||
|
||||
## PubSub Integration
|
||||
|
||||
### Published Message Types
|
||||
|
||||
#### 1. RoleAnnouncement
|
||||
**Topic**: `hmmm/meta-discussion/v1`
|
||||
**Frequency**: Once on startup, when capabilities change
|
||||
|
||||
```json
|
||||
{
|
||||
"type": "role_announcement",
|
||||
"from": "peer_id",
|
||||
"from_role": "Senior Backend Developer",
|
||||
"data": {
|
||||
"agent_id": "agent-001",
|
||||
"node_id": "Qm...",
|
||||
"role": "Senior Backend Developer",
|
||||
"expertise": ["Go", "PostgreSQL", "Kubernetes"],
|
||||
"capabilities": ["code", "test", "deploy"],
|
||||
"max_tasks": 3,
|
||||
"current_tasks": 0,
|
||||
"status": "ready",
|
||||
"specialization": "microservices"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
#### 2. TaskProgress
|
||||
**Topic**: `CHORUS/coordination/v1`
|
||||
**Frequency**: On claim, start, completion
|
||||
|
||||
**Task Claim:**
|
||||
```json
|
||||
{
|
||||
"type": "task_progress",
|
||||
"from": "peer_id",
|
||||
"from_role": "Senior Backend Developer",
|
||||
"thread_id": "task-myrepo-42",
|
||||
"data": {
|
||||
"task_number": 42,
|
||||
"repository": "myrepo",
|
||||
"title": "Add authentication endpoint",
|
||||
"agent_id": "agent-001",
|
||||
"agent_role": "Senior Backend Developer",
|
||||
"claim_time": "2025-09-30T10:00:00Z",
|
||||
"estimated_completion": "2025-09-30T11:00:00Z"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
**Task Status Update:**
|
||||
```json
|
||||
{
|
||||
"type": "task_progress",
|
||||
"from": "peer_id",
|
||||
"from_role": "Senior Backend Developer",
|
||||
"thread_id": "task-myrepo-42",
|
||||
"data": {
|
||||
"task_number": 42,
|
||||
"repository": "myrepo",
|
||||
"agent_id": "agent-001",
|
||||
"agent_role": "Senior Backend Developer",
|
||||
"status": "started" | "completed",
|
||||
"timestamp": "2025-09-30T10:05:00Z"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
#### 3. TaskHelpRequest
|
||||
**Topic**: `hmmm/meta-discussion/v1`
|
||||
**Frequency**: When collaboration needed
|
||||
|
||||
```json
|
||||
{
|
||||
"type": "task_help_request",
|
||||
"from": "peer_id",
|
||||
"from_role": "Senior Backend Developer",
|
||||
"to_roles": ["Database Specialist"],
|
||||
"required_expertise": ["PostgreSQL", "Query Optimization"],
|
||||
"priority": "high",
|
||||
"thread_id": "task-myrepo-42",
|
||||
"data": {
|
||||
"task_number": 42,
|
||||
"repository": "myrepo",
|
||||
"title": "Optimize database queries",
|
||||
"required_role": "Database Specialist",
|
||||
"required_expertise": ["PostgreSQL", "Query Optimization"],
|
||||
"priority": 8,
|
||||
"requester_role": "Senior Backend Developer",
|
||||
"reason": "expertise_gap"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Received Message Types
|
||||
|
||||
#### 1. TaskHelpRequest
|
||||
**Handler**: `handleTaskHelpRequest`
|
||||
|
||||
**Response Logic:**
|
||||
1. Check if agent has required expertise
|
||||
2. Verify agent has available capacity (currentTasks < maxTasks)
|
||||
3. If can help, send TaskHelpResponse
|
||||
4. Reflect offer into HMMM per-issue room
|
||||
|
||||
**Response Message:**
|
||||
```json
|
||||
{
|
||||
"type": "task_help_response",
|
||||
"from": "peer_id",
|
||||
"from_role": "Database Specialist",
|
||||
"thread_id": "task-myrepo-42",
|
||||
"data": {
|
||||
"agent_id": "agent-002",
|
||||
"agent_role": "Database Specialist",
|
||||
"expertise": ["PostgreSQL", "Query Optimization", "Indexing"],
|
||||
"availability": 2,
|
||||
"offer_type": "collaboration",
|
||||
"response_to": { /* original help request data */ }
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
#### 2. ExpertiseRequest
|
||||
**Handler**: `handleExpertiseRequest`
|
||||
|
||||
Processes requests for specific expertise areas.
|
||||
|
||||
#### 3. CoordinationRequest
|
||||
**Handler**: `handleCoordinationRequest`
|
||||
|
||||
Handles coordination requests for multi-agent tasks.
|
||||
|
||||
#### 4. RoleAnnouncement
|
||||
**Handler**: `handleRoleAnnouncement`
|
||||
|
||||
Logs when other agents announce their roles and capabilities.
|
||||
|
||||
## HMMM Integration
|
||||
|
||||
### Per-Issue Room Seeding
|
||||
|
||||
When a task is claimed, the coordinator seeds a HMMM meta-discussion room:
|
||||
|
||||
```go
|
||||
seedMsg := hmmm.Message{
|
||||
Version: 1,
|
||||
Type: "meta_msg",
|
||||
IssueID: int64(taskNumber),
|
||||
ThreadID: fmt.Sprintf("issue-%d", taskNumber),
|
||||
MsgID: uuid.New().String(),
|
||||
NodeID: nodeID,
|
||||
HopCount: 0,
|
||||
Timestamp: time.Now().UTC(),
|
||||
Message: "Seed: Task 'title' claimed. Description: ...",
|
||||
}
|
||||
|
||||
hmmmRouter.Publish(ctx, seedMsg)
|
||||
```
|
||||
|
||||
**Purpose:**
|
||||
- Creates dedicated discussion space for task
|
||||
- Enables agents to coordinate on specific tasks
|
||||
- Integrates with broader meta-coordination system
|
||||
- Provides context for SLURP event generation
|
||||
|
||||
### Help Offer Reflection
|
||||
|
||||
When agents offer help, the offer is reflected into the HMMM room:
|
||||
|
||||
```go
|
||||
hmsg := hmmm.Message{
|
||||
Version: 1,
|
||||
Type: "meta_msg",
|
||||
IssueID: issueID,
|
||||
ThreadID: fmt.Sprintf("issue-%d", issueID),
|
||||
MsgID: uuid.New().String(),
|
||||
NodeID: nodeID,
|
||||
HopCount: 0,
|
||||
Timestamp: time.Now().UTC(),
|
||||
Message: fmt.Sprintf("Help offer from %s (availability %d)",
|
||||
agentRole, availableSlots),
|
||||
}
|
||||
```
|
||||
|
||||
## Availability Tracking
|
||||
|
||||
The coordinator tracks task progress to keep availability broadcasts accurate:
|
||||
|
||||
```go
|
||||
// When task is claimed:
|
||||
if tc.taskTracker != nil {
|
||||
tc.taskTracker.AddTask(taskKey)
|
||||
}
|
||||
|
||||
// When task completes:
|
||||
if tc.taskTracker != nil {
|
||||
tc.taskTracker.RemoveTask(taskKey)
|
||||
}
|
||||
```
|
||||
|
||||
This ensures the availability broadcaster (in `internal/runtime`) has accurate real-time data:
|
||||
|
||||
```json
|
||||
{
|
||||
"type": "availability_broadcast",
|
||||
"data": {
|
||||
"node_id": "Qm...",
|
||||
"available_for_work": true,
|
||||
"current_tasks": 1,
|
||||
"max_tasks": 3,
|
||||
"last_activity": 1727692800,
|
||||
"status": "working",
|
||||
"timestamp": 1727692800
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Task Assignment Algorithm
|
||||
|
||||
### Scoring System
|
||||
|
||||
The `TaskMatcher` scores tasks for agents based on multiple factors:
|
||||
|
||||
```
|
||||
Score = (roleMatch * 0.4) +
|
||||
(expertiseMatch * 0.3) +
|
||||
(availabilityScore * 0.2) +
|
||||
(performanceScore * 0.1)
|
||||
|
||||
Where:
|
||||
- roleMatch: 1.0 if agent role matches required role, 0.5 for partial match
|
||||
- expertiseMatch: percentage of required expertise agent possesses
|
||||
- availabilityScore: (maxTasks - currentTasks) / maxTasks
|
||||
- performanceScore: agent's historical performance metric (0.0-1.0)
|
||||
```
|
||||
|
||||
**Threshold**: Tasks with score > 0.5 are considered for assignment.
|
||||
|
||||
### Assignment Priority
|
||||
|
||||
Tasks are prioritized by:
|
||||
1. **Priority Level** (task.Priority field, 0-10)
|
||||
2. **Task Score** (calculated by matcher)
|
||||
3. **Age** (older tasks first)
|
||||
4. **Dependencies** (tasks blocking others)
|
||||
|
||||
### Claim Race Condition Handling
|
||||
|
||||
Multiple agents may attempt to claim the same task:
|
||||
|
||||
```
|
||||
1. Agent A evaluates task: score = 0.8, attempts claim
|
||||
2. Agent B evaluates task: score = 0.7, attempts claim
|
||||
3. Repository provider uses atomic claim operation
|
||||
4. First successful claim wins
|
||||
5. Other agents receive claim failure
|
||||
6. Failed agents continue to next task
|
||||
```
|
||||
|
||||
## Error Handling
|
||||
|
||||
### Task Execution Failures
|
||||
|
||||
```go
|
||||
// On AI execution failure:
|
||||
if err := tc.executeTaskWithAI(activeTask); err != nil {
|
||||
// Fall back to mock execution
|
||||
taskResult = tc.executeMockTask(activeTask)
|
||||
}
|
||||
|
||||
// On completion failure:
|
||||
if err := provider.CompleteTask(task, result); err != nil {
|
||||
// Update status to failed
|
||||
activeTask.Status = "failed"
|
||||
activeTask.Results = map[string]interface{}{
|
||||
"error": err.Error(),
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Collaboration Request Failures
|
||||
|
||||
```go
|
||||
err := tc.pubsub.PublishRoleBasedMessage(
|
||||
pubsub.TaskHelpRequest, data, opts)
|
||||
if err != nil {
|
||||
// Log error but continue with task
|
||||
fmt.Printf("⚠️ Failed to request collaboration: %v\n", err)
|
||||
// Task execution proceeds without collaboration
|
||||
}
|
||||
```
|
||||
|
||||
### HMMM Seeding Failures
|
||||
|
||||
```go
|
||||
if err := tc.hmmmRouter.Publish(ctx, seedMsg); err != nil {
|
||||
// Log error to Hypercore
|
||||
tc.hlog.AppendString("system_error", map[string]interface{}{
|
||||
"error": "hmmm_seed_failed",
|
||||
"task_number": taskNumber,
|
||||
"repository": repository,
|
||||
"message": err.Error(),
|
||||
})
|
||||
// Task execution continues without HMMM room
|
||||
}
|
||||
```
|
||||
|
||||
## Agent Configuration
|
||||
|
||||
### Required Configuration
|
||||
|
||||
```yaml
|
||||
agent:
|
||||
id: "agent-001"
|
||||
role: "Senior Backend Developer"
|
||||
expertise:
|
||||
- "Go"
|
||||
- "PostgreSQL"
|
||||
- "Docker"
|
||||
- "Kubernetes"
|
||||
capabilities:
|
||||
- "code"
|
||||
- "test"
|
||||
- "deploy"
|
||||
max_tasks: 3
|
||||
specialization: "microservices"
|
||||
models:
|
||||
- name: "llama3.1:70b"
|
||||
provider: "ollama"
|
||||
endpoint: "http://192.168.1.72:11434"
|
||||
```
|
||||
|
||||
### AgentInfo Structure
|
||||
|
||||
```go
|
||||
type AgentInfo struct {
|
||||
ID string
|
||||
Role string
|
||||
Expertise []string
|
||||
CurrentTasks int
|
||||
MaxTasks int
|
||||
Status string // ready, working, busy, offline
|
||||
LastSeen time.Time
|
||||
Performance map[string]interface{} // score: 0.8
|
||||
Availability string // available, busy, offline
|
||||
}
|
||||
```
|
||||
|
||||
## Hypercore Logging
|
||||
|
||||
All coordination events are logged to Hypercore:
|
||||
|
||||
### Task Claimed
|
||||
```go
|
||||
hlog.Append(logging.TaskClaimed, map[string]interface{}{
|
||||
"task_number": taskNumber,
|
||||
"repository": repository,
|
||||
"title": title,
|
||||
"required_role": requiredRole,
|
||||
"priority": priority,
|
||||
})
|
||||
```
|
||||
|
||||
### Task Completed
|
||||
```go
|
||||
hlog.Append(logging.TaskCompleted, map[string]interface{}{
|
||||
"task_number": taskNumber,
|
||||
"repository": repository,
|
||||
"duration": durationSeconds,
|
||||
"results": resultsMap,
|
||||
})
|
||||
```
|
||||
|
||||
## Status Reporting
|
||||
|
||||
### Coordinator Status
|
||||
|
||||
```go
|
||||
status := coordinator.GetStatus()
|
||||
// Returns:
|
||||
{
|
||||
"agent_id": "agent-001",
|
||||
"role": "Senior Backend Developer",
|
||||
"expertise": ["Go", "PostgreSQL", "Docker"],
|
||||
"current_tasks": 1,
|
||||
"max_tasks": 3,
|
||||
"active_providers": 2,
|
||||
"status": "working",
|
||||
"active_tasks": [
|
||||
{
|
||||
"repository": "myrepo",
|
||||
"number": 42,
|
||||
"title": "Add authentication",
|
||||
"status": "working",
|
||||
"claimed_at": "2025-09-30T10:00:00Z"
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
## Best Practices
|
||||
|
||||
### Task Coordinator Usage
|
||||
|
||||
1. **Initialize Early**: Create coordinator during agent startup
|
||||
2. **Set Task Tracker**: Always provide TaskProgressTracker for accurate availability
|
||||
3. **Configure HMMM**: Wire up hmmmRouter for meta-discussion integration
|
||||
4. **Monitor Status**: Periodically check GetStatus() for health monitoring
|
||||
5. **Handle Failures**: Implement proper error handling for degraded operation
|
||||
|
||||
### Configuration Tuning
|
||||
|
||||
1. **Max Tasks**: Set based on agent resources (CPU, memory, AI model capacity)
|
||||
2. **Sync Interval**: Balance between responsiveness and network overhead (default: 30s)
|
||||
3. **Task Scoring**: Adjust threshold (default: 0.5) based on task availability
|
||||
4. **Collaboration**: Enable for high-priority or expertise-gap tasks
|
||||
|
||||
### Performance Optimization
|
||||
|
||||
1. **Task Discovery**: Delegate to WHOOSH for efficient search and indexing
|
||||
2. **Concurrent Execution**: Use goroutines for parallel task execution
|
||||
3. **Lock Granularity**: Minimize lock contention with separate locks for providers/tasks
|
||||
4. **Caching**: Cache agent info and provider connections
|
||||
|
||||
## Integration Points
|
||||
|
||||
### With PubSub
|
||||
- Publishes: RoleAnnouncement, TaskProgress, TaskHelpRequest
|
||||
- Subscribes: TaskHelpRequest, ExpertiseRequest, CoordinationRequest
|
||||
- Topics: CHORUS/coordination/v1, hmmm/meta-discussion/v1
|
||||
|
||||
### With HMMM
|
||||
- Seeds per-issue discussion rooms
|
||||
- Reflects help offers into rooms
|
||||
- Enables agent coordination on specific tasks
|
||||
|
||||
### With Repository Providers
|
||||
- Claims tasks atomically
|
||||
- Fetches task details
|
||||
- Updates task status
|
||||
- Completes tasks with results
|
||||
|
||||
### With Execution Engine
|
||||
- Converts repository tasks to execution requests
|
||||
- Executes tasks with AI providers
|
||||
- Handles sandbox environments
|
||||
- Collects execution metrics and artifacts
|
||||
|
||||
### With Hypercore
|
||||
- Logs task claims
|
||||
- Logs task completions
|
||||
- Logs coordination errors
|
||||
- Provides audit trail
|
||||
|
||||
## Task Message Format
|
||||
|
||||
### PubSub Task Messages
|
||||
|
||||
All task-related messages follow the standard PubSub Message format:
|
||||
|
||||
```go
|
||||
type Message struct {
|
||||
Type MessageType // e.g., "task_progress"
|
||||
From string // Peer ID
|
||||
Timestamp time.Time
|
||||
Data map[string]interface{} // Message payload
|
||||
HopCount int
|
||||
FromRole string // Agent role
|
||||
ToRoles []string // Target roles
|
||||
RequiredExpertise []string // Required expertise
|
||||
ProjectID string
|
||||
Priority string // low, medium, high, urgent
|
||||
ThreadID string // Conversation thread
|
||||
}
|
||||
```
|
||||
|
||||
### Task Assignment Message Flow
|
||||
|
||||
```
|
||||
1. TaskAnnouncement (WHOOSH → PubSub)
|
||||
├─ Available task discovered
|
||||
└─ Broadcast to coordination topic
|
||||
|
||||
2. Task Evaluation (Local)
|
||||
├─ Score task for agent
|
||||
└─ Decide whether to claim
|
||||
|
||||
3. TaskClaim (Agent → Repository)
|
||||
├─ Atomic claim operation
|
||||
└─ Only one agent succeeds
|
||||
|
||||
4. TaskProgress (Agent → PubSub)
|
||||
├─ Announce claim to network
|
||||
└─ Status: "claimed"
|
||||
|
||||
5. TaskHelpRequest (Optional, Agent → PubSub)
|
||||
├─ Request collaboration if needed
|
||||
└─ Target specific roles/expertise
|
||||
|
||||
6. TaskHelpResponse (Other Agents → PubSub)
|
||||
├─ Offer assistance
|
||||
└─ Include availability info
|
||||
|
||||
7. TaskProgress (Agent → PubSub)
|
||||
├─ Announce work started
|
||||
└─ Status: "started"
|
||||
|
||||
8. Task Execution (Local with AI Engine)
|
||||
├─ Execute task in sandbox
|
||||
└─ Generate artifacts
|
||||
|
||||
9. TaskProgress (Agent → PubSub)
|
||||
├─ Announce completion
|
||||
└─ Status: "completed"
|
||||
```
|
||||
|
||||
## See Also
|
||||
|
||||
- [discovery/](discovery.md) - mDNS peer discovery for local network
|
||||
- [pkg/coordination/](coordination.md) - Coordination primitives and dependency detection
|
||||
- [pubsub/](../pubsub.md) - PubSub messaging system
|
||||
- [pkg/execution/](execution.md) - Task execution engine
|
||||
- [pkg/hmmm/](hmmm.md) - Meta-discussion and coordination
|
||||
- [internal/runtime](../internal/runtime.md) - Agent runtime and availability broadcasting
|
||||
596
docs/comprehensive/packages/discovery.md
Normal file
596
docs/comprehensive/packages/discovery.md
Normal file
@@ -0,0 +1,596 @@
|
||||
# Package: discovery
|
||||
|
||||
**Location**: `/home/tony/chorus/project-queues/active/CHORUS/discovery/`
|
||||
|
||||
## Overview
|
||||
|
||||
The `discovery` package provides **mDNS-based peer discovery** for automatic detection and connection of CHORUS agents on the local network. It enables zero-configuration peer discovery using multicast DNS (mDNS), allowing agents to find and connect to each other without manual configuration or central coordination.
|
||||
|
||||
## Architecture
|
||||
|
||||
### mDNS Overview
|
||||
|
||||
Multicast DNS (mDNS) is a protocol that resolves hostnames to IP addresses within small networks that do not include a local name server. It uses:
|
||||
|
||||
- **Multicast IP**: 224.0.0.251 (IPv4) or FF02::FB (IPv6)
|
||||
- **UDP Port**: 5353
|
||||
- **Service Discovery**: Advertises and discovers services on the local network
|
||||
|
||||
### CHORUS Service Tag
|
||||
|
||||
**Default Service Name**: `"CHORUS-peer-discovery"`
|
||||
|
||||
This service tag identifies CHORUS peers on the network. All CHORUS agents advertise themselves with this tag and listen for other agents using the same tag.
|
||||
|
||||
## Core Components
|
||||
|
||||
### MDNSDiscovery
|
||||
|
||||
Main structure managing mDNS discovery operations.
|
||||
|
||||
```go
|
||||
type MDNSDiscovery struct {
|
||||
host host.Host // libp2p host
|
||||
service mdns.Service // mDNS service
|
||||
notifee *mdnsNotifee // Peer notification handler
|
||||
ctx context.Context // Discovery context
|
||||
cancel context.CancelFunc // Context cancellation
|
||||
serviceTag string // Service name (default: "CHORUS-peer-discovery")
|
||||
}
|
||||
```
|
||||
|
||||
**Key Responsibilities:**
|
||||
- Advertise local agent as mDNS service
|
||||
- Listen for mDNS announcements from other agents
|
||||
- Automatically connect to discovered peers
|
||||
- Handle peer connection lifecycle
|
||||
|
||||
### mdnsNotifee
|
||||
|
||||
Internal notification handler for discovered peers.
|
||||
|
||||
```go
|
||||
type mdnsNotifee struct {
|
||||
h host.Host // libp2p host
|
||||
ctx context.Context // Context for operations
|
||||
peersChan chan peer.AddrInfo // Channel for discovered peers (buffer: 10)
|
||||
}
|
||||
```
|
||||
|
||||
Implements the mDNS notification interface to receive peer discovery events.
|
||||
|
||||
## Discovery Flow
|
||||
|
||||
### 1. Service Initialization
|
||||
|
||||
```go
|
||||
discovery, err := NewMDNSDiscovery(ctx, host, "CHORUS-peer-discovery")
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to start mDNS discovery: %w", err)
|
||||
}
|
||||
```
|
||||
|
||||
**Initialization Steps:**
|
||||
1. Create discovery context with cancellation
|
||||
2. Initialize mdnsNotifee with peer channel
|
||||
3. Create mDNS service with service tag
|
||||
4. Start mDNS service (begins advertising and listening)
|
||||
5. Launch background peer connection handler
|
||||
|
||||
### 2. Service Advertisement
|
||||
|
||||
When the service starts, it automatically advertises:
|
||||
|
||||
```
|
||||
Service Type: _CHORUS-peer-discovery._udp.local
|
||||
Port: libp2p host port
|
||||
Addresses: All local IP addresses (IPv4 and IPv6)
|
||||
```
|
||||
|
||||
This allows other CHORUS agents on the network to discover this peer.
|
||||
|
||||
### 3. Peer Discovery
|
||||
|
||||
**Discovery Process:**
|
||||
|
||||
```
|
||||
1. mDNS Service listens for multicast announcements
|
||||
├─ Receives service announcement from peer
|
||||
└─ Extracts peer.AddrInfo (ID + addresses)
|
||||
|
||||
2. mdnsNotifee.HandlePeerFound() called
|
||||
├─ Peer info sent to peersChan
|
||||
└─ Non-blocking send (drops if channel full)
|
||||
|
||||
3. handleDiscoveredPeers() goroutine receives
|
||||
├─ Skip if peer is self
|
||||
├─ Skip if already connected
|
||||
└─ Attempt connection
|
||||
```
|
||||
|
||||
### 4. Automatic Connection
|
||||
|
||||
```go
|
||||
func (d *MDNSDiscovery) handleDiscoveredPeers() {
|
||||
for {
|
||||
select {
|
||||
case <-d.ctx.Done():
|
||||
return
|
||||
case peerInfo := <-d.notifee.peersChan:
|
||||
// Skip self
|
||||
if peerInfo.ID == d.host.ID() {
|
||||
continue
|
||||
}
|
||||
|
||||
// Check if already connected
|
||||
if d.host.Network().Connectedness(peerInfo.ID) == 1 {
|
||||
continue
|
||||
}
|
||||
|
||||
// Attempt connection with timeout
|
||||
connectCtx, cancel := context.WithTimeout(d.ctx, 10*time.Second)
|
||||
err := d.host.Connect(connectCtx, peerInfo)
|
||||
cancel()
|
||||
|
||||
if err != nil {
|
||||
fmt.Printf("❌ Failed to connect to peer %s: %v\n",
|
||||
peerInfo.ID.ShortString(), err)
|
||||
} else {
|
||||
fmt.Printf("✅ Successfully connected to peer %s\n",
|
||||
peerInfo.ID.ShortString())
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
**Connection Features:**
|
||||
- **10-second timeout** per connection attempt
|
||||
- **Idempotent**: Safe to attempt connection to already-connected peer
|
||||
- **Self-filtering**: Ignores own mDNS announcements
|
||||
- **Duplicate filtering**: Checks existing connections before attempting
|
||||
- **Non-blocking**: Runs in background goroutine
|
||||
|
||||
## Usage
|
||||
|
||||
### Basic Usage
|
||||
|
||||
```go
|
||||
import (
|
||||
"context"
|
||||
"chorus/discovery"
|
||||
"github.com/libp2p/go-libp2p/core/host"
|
||||
)
|
||||
|
||||
func setupDiscovery(ctx context.Context, h host.Host) (*discovery.MDNSDiscovery, error) {
|
||||
// Start mDNS discovery with default service tag
|
||||
disc, err := discovery.NewMDNSDiscovery(ctx, h, "")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
fmt.Println("🔍 mDNS discovery started")
|
||||
return disc, nil
|
||||
}
|
||||
```
|
||||
|
||||
### Custom Service Tag
|
||||
|
||||
```go
|
||||
// Use custom service tag for specific environments
|
||||
disc, err := discovery.NewMDNSDiscovery(ctx, h, "CHORUS-dev-network")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
```
|
||||
|
||||
### Monitoring Discovered Peers
|
||||
|
||||
```go
|
||||
// Access peer channel for custom handling
|
||||
peersChan := disc.PeersChan()
|
||||
|
||||
go func() {
|
||||
for peerInfo := range peersChan {
|
||||
fmt.Printf("🔍 Discovered peer: %s with %d addresses\n",
|
||||
peerInfo.ID.ShortString(),
|
||||
len(peerInfo.Addrs))
|
||||
|
||||
// Custom peer processing
|
||||
handleNewPeer(peerInfo)
|
||||
}
|
||||
}()
|
||||
```
|
||||
|
||||
### Graceful Shutdown
|
||||
|
||||
```go
|
||||
// Close discovery service
|
||||
if err := disc.Close(); err != nil {
|
||||
log.Printf("Error closing discovery: %v", err)
|
||||
}
|
||||
```
|
||||
|
||||
## Peer Information Structure
|
||||
|
||||
### peer.AddrInfo
|
||||
|
||||
Discovered peers are represented as libp2p `peer.AddrInfo`:
|
||||
|
||||
```go
|
||||
type AddrInfo struct {
|
||||
ID peer.ID // Unique peer identifier
|
||||
Addrs []multiaddr.Multiaddr // Peer addresses
|
||||
}
|
||||
```
|
||||
|
||||
**Example Multiaddresses:**
|
||||
```
|
||||
/ip4/192.168.1.100/tcp/4001/p2p/QmPeerID...
|
||||
/ip6/fe80::1/tcp/4001/p2p/QmPeerID...
|
||||
```
|
||||
|
||||
## Network Configuration
|
||||
|
||||
### Firewall Requirements
|
||||
|
||||
mDNS requires the following ports to be open:
|
||||
|
||||
- **UDP 5353**: mDNS multicast
|
||||
- **TCP/UDP 4001** (or configured libp2p port): libp2p connections
|
||||
|
||||
### Network Scope
|
||||
|
||||
mDNS operates on **local network** only:
|
||||
- Same subnet required for discovery
|
||||
- Does not traverse routers (by design)
|
||||
- Ideal for LAN-based agent clusters
|
||||
|
||||
### Multicast Group
|
||||
|
||||
mDNS uses standard multicast groups:
|
||||
- **IPv4**: 224.0.0.251
|
||||
- **IPv6**: FF02::FB
|
||||
|
||||
## Integration with CHORUS
|
||||
|
||||
### Cluster Formation
|
||||
|
||||
mDNS discovery enables automatic cluster formation:
|
||||
|
||||
```
|
||||
Startup Sequence:
|
||||
1. Agent starts with libp2p host
|
||||
2. mDNS discovery initialized
|
||||
3. Agent advertises itself via mDNS
|
||||
4. Agent listens for other agents
|
||||
5. Auto-connects to discovered peers
|
||||
6. PubSub gossip network forms
|
||||
7. Task coordination begins
|
||||
```
|
||||
|
||||
### Multi-Node Cluster Example
|
||||
|
||||
```
|
||||
Network: 192.168.1.0/24
|
||||
|
||||
Node 1 (walnut): 192.168.1.27 - Agent: backend-dev
|
||||
Node 2 (ironwood): 192.168.1.72 - Agent: frontend-dev
|
||||
Node 3 (rosewood): 192.168.1.113 - Agent: devops-specialist
|
||||
|
||||
Discovery Flow:
|
||||
1. All nodes start with CHORUS-peer-discovery tag
|
||||
2. Each node multicasts to 224.0.0.251:5353
|
||||
3. All nodes receive each other's announcements
|
||||
4. Automatic connection establishment:
|
||||
walnut ↔ ironwood
|
||||
walnut ↔ rosewood
|
||||
ironwood ↔ rosewood
|
||||
5. Full mesh topology formed
|
||||
6. PubSub topics synchronized
|
||||
```
|
||||
|
||||
## Error Handling
|
||||
|
||||
### Service Start Failure
|
||||
|
||||
```go
|
||||
disc, err := discovery.NewMDNSDiscovery(ctx, h, serviceTag)
|
||||
if err != nil {
|
||||
// Common causes:
|
||||
// - Port 5353 already in use
|
||||
// - Insufficient permissions (require multicast)
|
||||
// - Network interface unavailable
|
||||
return fmt.Errorf("failed to start mDNS discovery: %w", err)
|
||||
}
|
||||
```
|
||||
|
||||
### Connection Failures
|
||||
|
||||
Connection failures are logged but do not stop the discovery process:
|
||||
|
||||
```
|
||||
❌ Failed to connect to peer Qm... : context deadline exceeded
|
||||
```
|
||||
|
||||
**Common Causes:**
|
||||
- Peer behind firewall
|
||||
- Network congestion
|
||||
- Peer offline/restarting
|
||||
- Connection limit reached
|
||||
|
||||
**Behavior**: Discovery continues, will retry on next mDNS announcement.
|
||||
|
||||
### Channel Full
|
||||
|
||||
If peer discovery is faster than connection handling:
|
||||
|
||||
```
|
||||
⚠️ Discovery channel full, skipping peer Qm...
|
||||
```
|
||||
|
||||
**Buffer Size**: 10 peers
|
||||
**Mitigation**: Non-critical, peer will be rediscovered on next announcement cycle
|
||||
|
||||
## Performance Characteristics
|
||||
|
||||
### Discovery Latency
|
||||
|
||||
- **Initial Advertisement**: ~1-2 seconds after service start
|
||||
- **Discovery Response**: Typically < 1 second on LAN
|
||||
- **Connection Establishment**: 1-10 seconds (with 10s timeout)
|
||||
- **Re-announcement**: Periodic (standard mDNS timing)
|
||||
|
||||
### Resource Usage
|
||||
|
||||
- **Memory**: Minimal (~1MB per discovery service)
|
||||
- **CPU**: Very low (event-driven)
|
||||
- **Network**: Minimal (periodic multicast announcements)
|
||||
- **Concurrent Connections**: Handled by libp2p connection manager
|
||||
|
||||
## Configuration Options
|
||||
|
||||
### Service Tag Customization
|
||||
|
||||
```go
|
||||
// Production environment
|
||||
disc, _ := discovery.NewMDNSDiscovery(ctx, h, "CHORUS-production")
|
||||
|
||||
// Development environment
|
||||
disc, _ := discovery.NewMDNSDiscovery(ctx, h, "CHORUS-dev")
|
||||
|
||||
// Testing environment
|
||||
disc, _ := discovery.NewMDNSDiscovery(ctx, h, "CHORUS-test")
|
||||
```
|
||||
|
||||
**Use Case**: Isolate environments on same physical network.
|
||||
|
||||
### Connection Timeout Adjustment
|
||||
|
||||
Currently hardcoded to 10 seconds. For customization:
|
||||
|
||||
```go
|
||||
// In handleDiscoveredPeers():
|
||||
connectTimeout := 30 * time.Second // Longer for slow networks
|
||||
connectCtx, cancel := context.WithTimeout(d.ctx, connectTimeout)
|
||||
```
|
||||
|
||||
## Advanced Usage
|
||||
|
||||
### Custom Peer Handling
|
||||
|
||||
Bypass automatic connection and implement custom logic:
|
||||
|
||||
```go
|
||||
// Subscribe to peer channel
|
||||
peersChan := disc.PeersChan()
|
||||
|
||||
go func() {
|
||||
for peerInfo := range peersChan {
|
||||
// Custom filtering
|
||||
if shouldConnectToPeer(peerInfo) {
|
||||
// Custom connection logic
|
||||
connectWithRetry(peerInfo)
|
||||
}
|
||||
}
|
||||
}()
|
||||
```
|
||||
|
||||
### Discovery Metrics
|
||||
|
||||
```go
|
||||
type DiscoveryMetrics struct {
|
||||
PeersDiscovered int
|
||||
ConnectionsSuccess int
|
||||
ConnectionsFailed int
|
||||
LastDiscovery time.Time
|
||||
}
|
||||
|
||||
// Track metrics
|
||||
var metrics DiscoveryMetrics
|
||||
|
||||
// In handleDiscoveredPeers():
|
||||
metrics.PeersDiscovered++
|
||||
if err := host.Connect(ctx, peerInfo); err != nil {
|
||||
metrics.ConnectionsFailed++
|
||||
} else {
|
||||
metrics.ConnectionsSuccess++
|
||||
}
|
||||
metrics.LastDiscovery = time.Now()
|
||||
```
|
||||
|
||||
## Comparison with Other Discovery Methods
|
||||
|
||||
### mDNS vs DHT
|
||||
|
||||
| Feature | mDNS | DHT (Kademlia) |
|
||||
|---------|------|----------------|
|
||||
| Network Scope | Local network only | Global |
|
||||
| Setup | Zero-config | Requires bootstrap nodes |
|
||||
| Speed | Very fast (< 1s) | Slower (seconds to minutes) |
|
||||
| Privacy | Local only | Public network |
|
||||
| Reliability | High on LAN | Depends on DHT health |
|
||||
| Use Case | LAN clusters | Internet-wide P2P |
|
||||
|
||||
**CHORUS Choice**: mDNS for local agent clusters, DHT could be added for internet-wide coordination.
|
||||
|
||||
### mDNS vs Bootstrap List
|
||||
|
||||
| Feature | mDNS | Bootstrap List |
|
||||
|---------|------|----------------|
|
||||
| Configuration | None | Manual list |
|
||||
| Maintenance | Automatic | Manual updates |
|
||||
| Scalability | Limited to LAN | Unlimited |
|
||||
| Flexibility | Dynamic | Static |
|
||||
| Failure Handling | Auto-discovery | Manual intervention |
|
||||
|
||||
**CHORUS Choice**: mDNS for local discovery, bootstrap list as fallback.
|
||||
|
||||
## libp2p Integration
|
||||
|
||||
### Host Requirement
|
||||
|
||||
mDNS discovery requires a libp2p host:
|
||||
|
||||
```go
|
||||
import (
|
||||
"github.com/libp2p/go-libp2p"
|
||||
"github.com/libp2p/go-libp2p/core/host"
|
||||
)
|
||||
|
||||
// Create libp2p host
|
||||
h, err := libp2p.New(
|
||||
libp2p.ListenAddrStrings(
|
||||
"/ip4/0.0.0.0/tcp/4001",
|
||||
"/ip6/::/tcp/4001",
|
||||
),
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Initialize mDNS discovery with host
|
||||
disc, err := discovery.NewMDNSDiscovery(ctx, h, "CHORUS-peer-discovery")
|
||||
```
|
||||
|
||||
### Connection Manager Integration
|
||||
|
||||
mDNS discovery works with libp2p connection manager:
|
||||
|
||||
```go
|
||||
h, err := libp2p.New(
|
||||
libp2p.ListenAddrStrings("/ip4/0.0.0.0/tcp/4001"),
|
||||
libp2p.ConnectionManager(connmgr.NewConnManager(
|
||||
100, // Low water mark
|
||||
400, // High water mark
|
||||
time.Minute,
|
||||
)),
|
||||
)
|
||||
|
||||
// mDNS-discovered connections managed by connection manager
|
||||
disc, err := discovery.NewMDNSDiscovery(ctx, h, "")
|
||||
```
|
||||
|
||||
## Security Considerations
|
||||
|
||||
### Trust Model
|
||||
|
||||
mDNS operates on **local network trust**:
|
||||
- Assumes local network is trusted
|
||||
- No authentication at mDNS layer
|
||||
- Authentication handled by libp2p security transport
|
||||
|
||||
### Attack Vectors
|
||||
|
||||
1. **Peer ID Spoofing**: Mitigated by libp2p peer ID verification
|
||||
2. **DoS via Fake Peers**: Limited by channel buffer and connection timeout
|
||||
3. **Network Snooping**: mDNS announcements are plaintext (by design)
|
||||
|
||||
### Best Practices
|
||||
|
||||
1. **Use libp2p Security**: TLS or Noise transport for encrypted connections
|
||||
2. **Peer Authentication**: Verify peer identities after connection
|
||||
3. **Network Isolation**: Deploy on trusted networks
|
||||
4. **Connection Limits**: Use libp2p connection manager
|
||||
5. **Monitoring**: Log all discovery and connection events
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
### No Peers Discovered
|
||||
|
||||
**Symptoms**: Service starts but no peers found.
|
||||
|
||||
**Checks:**
|
||||
1. Verify all agents on same subnet
|
||||
2. Check firewall rules (UDP 5353)
|
||||
3. Verify mDNS/multicast not blocked by network
|
||||
4. Check service tag matches across agents
|
||||
5. Verify no mDNS conflicts with other services
|
||||
|
||||
### Connection Failures
|
||||
|
||||
**Symptoms**: Peers discovered but connections fail.
|
||||
|
||||
**Checks:**
|
||||
1. Verify libp2p port open (default: TCP 4001)
|
||||
2. Check connection manager limits
|
||||
3. Verify peer addresses are reachable
|
||||
4. Check for NAT/firewall between peers
|
||||
5. Verify sufficient system resources (file descriptors, memory)
|
||||
|
||||
### High CPU/Network Usage
|
||||
|
||||
**Symptoms**: Excessive mDNS traffic or CPU usage.
|
||||
|
||||
**Causes:**
|
||||
- Rapid peer restarts (re-announcements)
|
||||
- Many peers on network
|
||||
- Short announcement intervals
|
||||
|
||||
**Solutions:**
|
||||
- Implement connection caching
|
||||
- Adjust mDNS announcement timing
|
||||
- Use connection limits
|
||||
|
||||
## Monitoring and Debugging
|
||||
|
||||
### Discovery Events
|
||||
|
||||
```go
|
||||
// Log all discovery events
|
||||
disc, _ := discovery.NewMDNSDiscovery(ctx, h, "CHORUS-peer-discovery")
|
||||
|
||||
peersChan := disc.PeersChan()
|
||||
go func() {
|
||||
for peerInfo := range peersChan {
|
||||
logger.Info("Discovered peer",
|
||||
"peer_id", peerInfo.ID.String(),
|
||||
"addresses", peerInfo.Addrs,
|
||||
"timestamp", time.Now())
|
||||
}
|
||||
}()
|
||||
```
|
||||
|
||||
### Connection Status
|
||||
|
||||
```go
|
||||
// Monitor connection status
|
||||
func monitorConnections(h host.Host) {
|
||||
ticker := time.NewTicker(30 * time.Second)
|
||||
defer ticker.Stop()
|
||||
|
||||
for range ticker.C {
|
||||
peers := h.Network().Peers()
|
||||
fmt.Printf("📊 Connected to %d peers: %v\n",
|
||||
len(peers), peers)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## See Also
|
||||
|
||||
- [coordinator/](coordinator.md) - Task coordination using discovered peers
|
||||
- [pubsub/](../pubsub.md) - PubSub over discovered peer network
|
||||
- [internal/runtime/](../internal/runtime.md) - Runtime initialization with discovery
|
||||
- [libp2p Documentation](https://docs.libp2p.io/) - libp2p concepts and APIs
|
||||
- [mDNS RFC 6762](https://tools.ietf.org/html/rfc6762) - mDNS protocol specification
|
||||
2757
docs/comprehensive/packages/election.md
Normal file
2757
docs/comprehensive/packages/election.md
Normal file
File diff suppressed because it is too large
Load Diff
1124
docs/comprehensive/packages/health.md
Normal file
1124
docs/comprehensive/packages/health.md
Normal file
File diff suppressed because it is too large
Load Diff
914
docs/comprehensive/packages/metrics.md
Normal file
914
docs/comprehensive/packages/metrics.md
Normal file
@@ -0,0 +1,914 @@
|
||||
# CHORUS Metrics Package
|
||||
|
||||
## Overview
|
||||
|
||||
The `pkg/metrics` package provides comprehensive Prometheus-based metrics collection for the CHORUS distributed system. It exposes detailed operational metrics across all system components including P2P networking, DHT operations, PubSub messaging, elections, task management, and resource utilization.
|
||||
|
||||
## Architecture
|
||||
|
||||
### Core Components
|
||||
|
||||
- **CHORUSMetrics**: Central metrics collector managing all Prometheus metrics
|
||||
- **Prometheus Registry**: Custom registry for metric collection
|
||||
- **HTTP Server**: Exposes metrics endpoint for scraping
|
||||
- **Background Collectors**: Periodic system and resource metric collection
|
||||
|
||||
### Metric Types
|
||||
|
||||
The package uses three Prometheus metric types:
|
||||
|
||||
1. **Counter**: Monotonically increasing values (e.g., total messages sent)
|
||||
2. **Gauge**: Values that can go up or down (e.g., connected peers)
|
||||
3. **Histogram**: Distribution of values with configurable buckets (e.g., latency measurements)
|
||||
|
||||
## Configuration
|
||||
|
||||
### MetricsConfig
|
||||
|
||||
```go
|
||||
type MetricsConfig struct {
|
||||
// HTTP server configuration
|
||||
ListenAddr string // Default: ":9090"
|
||||
MetricsPath string // Default: "/metrics"
|
||||
|
||||
// Histogram buckets
|
||||
LatencyBuckets []float64 // Default: 0.001s to 10s
|
||||
SizeBuckets []float64 // Default: 64B to 16MB
|
||||
|
||||
// Node identification labels
|
||||
NodeID string // Unique node identifier
|
||||
Version string // CHORUS version
|
||||
Environment string // deployment environment (dev/staging/prod)
|
||||
Cluster string // cluster identifier
|
||||
|
||||
// Collection intervals
|
||||
SystemMetricsInterval time.Duration // Default: 30s
|
||||
ResourceMetricsInterval time.Duration // Default: 15s
|
||||
}
|
||||
```
|
||||
|
||||
### Default Configuration
|
||||
|
||||
```go
|
||||
config := metrics.DefaultMetricsConfig()
|
||||
// Returns:
|
||||
// - ListenAddr: ":9090"
|
||||
// - MetricsPath: "/metrics"
|
||||
// - LatencyBuckets: [0.001, 0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 10.0]
|
||||
// - SizeBuckets: [64, 256, 1024, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216]
|
||||
// - SystemMetricsInterval: 30s
|
||||
// - ResourceMetricsInterval: 15s
|
||||
```
|
||||
|
||||
## Metrics Catalog
|
||||
|
||||
### System Metrics
|
||||
|
||||
#### chorus_system_info
|
||||
**Type**: Gauge
|
||||
**Description**: System information with version labels
|
||||
**Labels**: `node_id`, `version`, `go_version`, `cluster`, `environment`
|
||||
**Value**: Always 1 when present
|
||||
|
||||
#### chorus_uptime_seconds
|
||||
**Type**: Gauge
|
||||
**Description**: System uptime in seconds since start
|
||||
**Value**: Current uptime in seconds
|
||||
|
||||
### P2P Network Metrics
|
||||
|
||||
#### chorus_p2p_connected_peers
|
||||
**Type**: Gauge
|
||||
**Description**: Number of currently connected P2P peers
|
||||
**Value**: Current peer count
|
||||
|
||||
#### chorus_p2p_messages_sent_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of P2P messages sent
|
||||
**Labels**: `message_type`, `peer_id`
|
||||
**Usage**: Track outbound message volume per type and destination
|
||||
|
||||
#### chorus_p2p_messages_received_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of P2P messages received
|
||||
**Labels**: `message_type`, `peer_id`
|
||||
**Usage**: Track inbound message volume per type and source
|
||||
|
||||
#### chorus_p2p_message_latency_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: P2P message round-trip latency distribution
|
||||
**Labels**: `message_type`
|
||||
**Buckets**: Configurable latency buckets (default: 1ms to 10s)
|
||||
|
||||
#### chorus_p2p_connection_duration_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: Duration of P2P connections
|
||||
**Labels**: `peer_id`
|
||||
**Usage**: Track connection stability
|
||||
|
||||
#### chorus_p2p_peer_score
|
||||
**Type**: Gauge
|
||||
**Description**: Peer quality score
|
||||
**Labels**: `peer_id`
|
||||
**Value**: Score between 0.0 (poor) and 1.0 (excellent)
|
||||
|
||||
### DHT (Distributed Hash Table) Metrics
|
||||
|
||||
#### chorus_dht_put_operations_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of DHT put operations
|
||||
**Labels**: `status` (success/failure)
|
||||
**Usage**: Track DHT write operations
|
||||
|
||||
#### chorus_dht_get_operations_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of DHT get operations
|
||||
**Labels**: `status` (success/failure)
|
||||
**Usage**: Track DHT read operations
|
||||
|
||||
#### chorus_dht_operation_latency_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: DHT operation latency distribution
|
||||
**Labels**: `operation` (put/get), `status` (success/failure)
|
||||
**Usage**: Monitor DHT performance
|
||||
|
||||
#### chorus_dht_provider_records
|
||||
**Type**: Gauge
|
||||
**Description**: Number of provider records stored in DHT
|
||||
**Value**: Current provider record count
|
||||
|
||||
#### chorus_dht_content_keys
|
||||
**Type**: Gauge
|
||||
**Description**: Number of content keys stored in DHT
|
||||
**Value**: Current content key count
|
||||
|
||||
#### chorus_dht_replication_factor
|
||||
**Type**: Gauge
|
||||
**Description**: Replication factor for DHT keys
|
||||
**Labels**: `key_hash`
|
||||
**Value**: Number of replicas for specific keys
|
||||
|
||||
#### chorus_dht_cache_hits_total
|
||||
**Type**: Counter
|
||||
**Description**: DHT cache hit count
|
||||
**Labels**: `cache_type`
|
||||
**Usage**: Monitor DHT caching effectiveness
|
||||
|
||||
#### chorus_dht_cache_misses_total
|
||||
**Type**: Counter
|
||||
**Description**: DHT cache miss count
|
||||
**Labels**: `cache_type`
|
||||
**Usage**: Monitor DHT caching effectiveness
|
||||
|
||||
### PubSub Messaging Metrics
|
||||
|
||||
#### chorus_pubsub_topics
|
||||
**Type**: Gauge
|
||||
**Description**: Number of active PubSub topics
|
||||
**Value**: Current topic count
|
||||
|
||||
#### chorus_pubsub_subscribers
|
||||
**Type**: Gauge
|
||||
**Description**: Number of subscribers per topic
|
||||
**Labels**: `topic`
|
||||
**Value**: Subscriber count for each topic
|
||||
|
||||
#### chorus_pubsub_messages_total
|
||||
**Type**: Counter
|
||||
**Description**: Total PubSub messages
|
||||
**Labels**: `topic`, `direction` (sent/received), `message_type`
|
||||
**Usage**: Track message volume per topic
|
||||
|
||||
#### chorus_pubsub_message_latency_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: PubSub message delivery latency
|
||||
**Labels**: `topic`
|
||||
**Usage**: Monitor message propagation performance
|
||||
|
||||
#### chorus_pubsub_message_size_bytes
|
||||
**Type**: Histogram
|
||||
**Description**: PubSub message size distribution
|
||||
**Labels**: `topic`
|
||||
**Buckets**: Configurable size buckets (default: 64B to 16MB)
|
||||
|
||||
### Election System Metrics
|
||||
|
||||
#### chorus_election_term
|
||||
**Type**: Gauge
|
||||
**Description**: Current election term number
|
||||
**Value**: Monotonically increasing term number
|
||||
|
||||
#### chorus_election_state
|
||||
**Type**: Gauge
|
||||
**Description**: Current election state (1 for active state, 0 for others)
|
||||
**Labels**: `state` (idle/discovering/electing/reconstructing/complete)
|
||||
**Usage**: Only one state should have value 1 at any time
|
||||
|
||||
#### chorus_heartbeats_sent_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of heartbeats sent by this node
|
||||
**Usage**: Monitor leader heartbeat activity
|
||||
|
||||
#### chorus_heartbeats_received_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of heartbeats received from leader
|
||||
**Usage**: Monitor follower connectivity to leader
|
||||
|
||||
#### chorus_leadership_changes_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of leadership changes
|
||||
**Usage**: Monitor election stability (lower is better)
|
||||
|
||||
#### chorus_leader_uptime_seconds
|
||||
**Type**: Gauge
|
||||
**Description**: Current leader's tenure duration
|
||||
**Value**: Seconds since current leader was elected
|
||||
|
||||
#### chorus_election_latency_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: Time taken to complete election process
|
||||
**Usage**: Monitor election efficiency
|
||||
|
||||
### Health Monitoring Metrics
|
||||
|
||||
#### chorus_health_checks_passed_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of health checks passed
|
||||
**Labels**: `check_name`
|
||||
**Usage**: Track health check success rate
|
||||
|
||||
#### chorus_health_checks_failed_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of health checks failed
|
||||
**Labels**: `check_name`, `reason`
|
||||
**Usage**: Track health check failures and reasons
|
||||
|
||||
#### chorus_health_check_duration_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: Health check execution duration
|
||||
**Labels**: `check_name`
|
||||
**Usage**: Monitor health check performance
|
||||
|
||||
#### chorus_system_health_score
|
||||
**Type**: Gauge
|
||||
**Description**: Overall system health score
|
||||
**Value**: 0.0 (unhealthy) to 1.0 (healthy)
|
||||
**Usage**: Monitor overall system health
|
||||
|
||||
#### chorus_component_health_score
|
||||
**Type**: Gauge
|
||||
**Description**: Component-specific health score
|
||||
**Labels**: `component`
|
||||
**Value**: 0.0 (unhealthy) to 1.0 (healthy)
|
||||
**Usage**: Track individual component health
|
||||
|
||||
### Task Management Metrics
|
||||
|
||||
#### chorus_tasks_active
|
||||
**Type**: Gauge
|
||||
**Description**: Number of currently active tasks
|
||||
**Value**: Current active task count
|
||||
|
||||
#### chorus_tasks_queued
|
||||
**Type**: Gauge
|
||||
**Description**: Number of queued tasks waiting execution
|
||||
**Value**: Current queue depth
|
||||
|
||||
#### chorus_tasks_completed_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of completed tasks
|
||||
**Labels**: `status` (success/failure), `task_type`
|
||||
**Usage**: Track task completion and success rate
|
||||
|
||||
#### chorus_task_duration_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: Task execution duration distribution
|
||||
**Labels**: `task_type`, `status`
|
||||
**Usage**: Monitor task performance
|
||||
|
||||
#### chorus_task_queue_wait_time_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: Time tasks spend in queue before execution
|
||||
**Usage**: Monitor task scheduling efficiency
|
||||
|
||||
### SLURP (Context Generation) Metrics
|
||||
|
||||
#### chorus_slurp_contexts_generated_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of SLURP contexts generated
|
||||
**Labels**: `role`, `status` (success/failure)
|
||||
**Usage**: Track context generation volume
|
||||
|
||||
#### chorus_slurp_generation_time_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: Time taken to generate SLURP contexts
|
||||
**Buckets**: [0.1, 0.5, 1.0, 2.0, 5.0, 10.0, 30.0, 60.0, 120.0]
|
||||
**Usage**: Monitor context generation performance
|
||||
|
||||
#### chorus_slurp_queue_length
|
||||
**Type**: Gauge
|
||||
**Description**: Length of SLURP generation queue
|
||||
**Value**: Current queue depth
|
||||
|
||||
#### chorus_slurp_active_jobs
|
||||
**Type**: Gauge
|
||||
**Description**: Number of active SLURP generation jobs
|
||||
**Value**: Currently running generation jobs
|
||||
|
||||
#### chorus_slurp_leadership_events_total
|
||||
**Type**: Counter
|
||||
**Description**: SLURP-related leadership events
|
||||
**Usage**: Track leader-initiated context generation
|
||||
|
||||
### SHHH (Secret Sentinel) Metrics
|
||||
|
||||
#### chorus_shhh_findings_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of SHHH redaction findings
|
||||
**Labels**: `rule`, `severity` (low/medium/high/critical)
|
||||
**Usage**: Monitor secret detection effectiveness
|
||||
|
||||
### UCXI (Protocol Resolution) Metrics
|
||||
|
||||
#### chorus_ucxi_requests_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of UCXI protocol requests
|
||||
**Labels**: `method`, `status` (success/failure)
|
||||
**Usage**: Track UCXI usage and success rate
|
||||
|
||||
#### chorus_ucxi_resolution_latency_seconds
|
||||
**Type**: Histogram
|
||||
**Description**: UCXI address resolution latency
|
||||
**Usage**: Monitor resolution performance
|
||||
|
||||
#### chorus_ucxi_cache_hits_total
|
||||
**Type**: Counter
|
||||
**Description**: UCXI cache hit count
|
||||
**Usage**: Monitor caching effectiveness
|
||||
|
||||
#### chorus_ucxi_cache_misses_total
|
||||
**Type**: Counter
|
||||
**Description**: UCXI cache miss count
|
||||
**Usage**: Monitor caching effectiveness
|
||||
|
||||
#### chorus_ucxi_content_size_bytes
|
||||
**Type**: Histogram
|
||||
**Description**: Size of resolved UCXI content
|
||||
**Usage**: Monitor content distribution
|
||||
|
||||
### Resource Utilization Metrics
|
||||
|
||||
#### chorus_cpu_usage_ratio
|
||||
**Type**: Gauge
|
||||
**Description**: CPU usage ratio
|
||||
**Value**: 0.0 (idle) to 1.0 (fully utilized)
|
||||
|
||||
#### chorus_memory_usage_bytes
|
||||
**Type**: Gauge
|
||||
**Description**: Memory usage in bytes
|
||||
**Value**: Current memory consumption
|
||||
|
||||
#### chorus_disk_usage_ratio
|
||||
**Type**: Gauge
|
||||
**Description**: Disk usage ratio
|
||||
**Labels**: `mount_point`
|
||||
**Value**: 0.0 (empty) to 1.0 (full)
|
||||
|
||||
#### chorus_network_bytes_in_total
|
||||
**Type**: Counter
|
||||
**Description**: Total bytes received from network
|
||||
**Usage**: Track inbound network traffic
|
||||
|
||||
#### chorus_network_bytes_out_total
|
||||
**Type**: Counter
|
||||
**Description**: Total bytes sent to network
|
||||
**Usage**: Track outbound network traffic
|
||||
|
||||
#### chorus_goroutines
|
||||
**Type**: Gauge
|
||||
**Description**: Number of active goroutines
|
||||
**Value**: Current goroutine count
|
||||
|
||||
### Error Metrics
|
||||
|
||||
#### chorus_errors_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of errors
|
||||
**Labels**: `component`, `error_type`
|
||||
**Usage**: Track error frequency by component and type
|
||||
|
||||
#### chorus_panics_total
|
||||
**Type**: Counter
|
||||
**Description**: Total number of panics recovered
|
||||
**Usage**: Monitor system stability
|
||||
|
||||
## Usage Examples
|
||||
|
||||
### Basic Initialization
|
||||
|
||||
```go
|
||||
import "chorus/pkg/metrics"
|
||||
|
||||
// Create metrics collector with default config
|
||||
config := metrics.DefaultMetricsConfig()
|
||||
config.NodeID = "chorus-node-01"
|
||||
config.Version = "v1.0.0"
|
||||
config.Environment = "production"
|
||||
config.Cluster = "cluster-01"
|
||||
|
||||
metricsCollector := metrics.NewCHORUSMetrics(config)
|
||||
|
||||
// Start metrics HTTP server
|
||||
if err := metricsCollector.StartServer(config); err != nil {
|
||||
log.Fatalf("Failed to start metrics server: %v", err)
|
||||
}
|
||||
|
||||
// Start background metric collection
|
||||
metricsCollector.CollectMetrics(config)
|
||||
```
|
||||
|
||||
### Recording P2P Metrics
|
||||
|
||||
```go
|
||||
// Update peer count
|
||||
metricsCollector.SetConnectedPeers(5)
|
||||
|
||||
// Record message sent
|
||||
metricsCollector.IncrementMessagesSent("task_assignment", "peer-abc123")
|
||||
|
||||
// Record message received
|
||||
metricsCollector.IncrementMessagesReceived("task_result", "peer-def456")
|
||||
|
||||
// Record message latency
|
||||
startTime := time.Now()
|
||||
// ... send message and wait for response ...
|
||||
latency := time.Since(startTime)
|
||||
metricsCollector.ObserveMessageLatency("task_assignment", latency)
|
||||
```
|
||||
|
||||
### Recording DHT Metrics
|
||||
|
||||
```go
|
||||
// Record DHT put operation
|
||||
startTime := time.Now()
|
||||
err := dht.Put(key, value)
|
||||
latency := time.Since(startTime)
|
||||
|
||||
if err != nil {
|
||||
metricsCollector.IncrementDHTPutOperations("failure")
|
||||
metricsCollector.ObserveDHTOperationLatency("put", "failure", latency)
|
||||
} else {
|
||||
metricsCollector.IncrementDHTPutOperations("success")
|
||||
metricsCollector.ObserveDHTOperationLatency("put", "success", latency)
|
||||
}
|
||||
|
||||
// Update DHT statistics
|
||||
metricsCollector.SetDHTProviderRecords(150)
|
||||
metricsCollector.SetDHTContentKeys(450)
|
||||
metricsCollector.SetDHTReplicationFactor("key-hash-123", 3.0)
|
||||
```
|
||||
|
||||
### Recording PubSub Metrics
|
||||
|
||||
```go
|
||||
// Update topic count
|
||||
metricsCollector.SetPubSubTopics(10)
|
||||
|
||||
// Record message published
|
||||
metricsCollector.IncrementPubSubMessages("CHORUS/tasks/v1", "sent", "task_created")
|
||||
|
||||
// Record message received
|
||||
metricsCollector.IncrementPubSubMessages("CHORUS/tasks/v1", "received", "task_completed")
|
||||
|
||||
// Record message latency
|
||||
startTime := time.Now()
|
||||
// ... publish message and wait for delivery confirmation ...
|
||||
latency := time.Since(startTime)
|
||||
metricsCollector.ObservePubSubMessageLatency("CHORUS/tasks/v1", latency)
|
||||
```
|
||||
|
||||
### Recording Election Metrics
|
||||
|
||||
```go
|
||||
// Update election state
|
||||
metricsCollector.SetElectionTerm(42)
|
||||
metricsCollector.SetElectionState("idle")
|
||||
|
||||
// Record heartbeat sent (leader)
|
||||
metricsCollector.IncrementHeartbeatsSent()
|
||||
|
||||
// Record heartbeat received (follower)
|
||||
metricsCollector.IncrementHeartbeatsReceived()
|
||||
|
||||
// Record leadership change
|
||||
metricsCollector.IncrementLeadershipChanges()
|
||||
```
|
||||
|
||||
### Recording Health Metrics
|
||||
|
||||
```go
|
||||
// Record health check success
|
||||
metricsCollector.IncrementHealthCheckPassed("database-connectivity")
|
||||
|
||||
// Record health check failure
|
||||
metricsCollector.IncrementHealthCheckFailed("p2p-connectivity", "no_peers")
|
||||
|
||||
// Update health scores
|
||||
metricsCollector.SetSystemHealthScore(0.95)
|
||||
metricsCollector.SetComponentHealthScore("dht", 0.98)
|
||||
metricsCollector.SetComponentHealthScore("pubsub", 0.92)
|
||||
```
|
||||
|
||||
### Recording Task Metrics
|
||||
|
||||
```go
|
||||
// Update task counts
|
||||
metricsCollector.SetActiveTasks(5)
|
||||
metricsCollector.SetQueuedTasks(12)
|
||||
|
||||
// Record task completion
|
||||
startTime := time.Now()
|
||||
// ... execute task ...
|
||||
duration := time.Since(startTime)
|
||||
|
||||
metricsCollector.IncrementTasksCompleted("success", "data_processing")
|
||||
metricsCollector.ObserveTaskDuration("data_processing", "success", duration)
|
||||
```
|
||||
|
||||
### Recording SLURP Metrics
|
||||
|
||||
```go
|
||||
// Record context generation
|
||||
startTime := time.Now()
|
||||
// ... generate SLURP context ...
|
||||
duration := time.Since(startTime)
|
||||
|
||||
metricsCollector.IncrementSLURPGenerated("admin", "success")
|
||||
metricsCollector.ObserveSLURPGenerationTime(duration)
|
||||
|
||||
// Update queue length
|
||||
metricsCollector.SetSLURPQueueLength(3)
|
||||
```
|
||||
|
||||
### Recording SHHH Metrics
|
||||
|
||||
```go
|
||||
// Record secret findings
|
||||
findings := scanForSecrets(content)
|
||||
for _, finding := range findings {
|
||||
metricsCollector.IncrementSHHHFindings(finding.Rule, finding.Severity, 1)
|
||||
}
|
||||
```
|
||||
|
||||
### Recording Resource Metrics
|
||||
|
||||
```go
|
||||
import "runtime"
|
||||
|
||||
// Get runtime stats
|
||||
var memStats runtime.MemStats
|
||||
runtime.ReadMemStats(&memStats)
|
||||
|
||||
metricsCollector.SetMemoryUsage(float64(memStats.Alloc))
|
||||
metricsCollector.SetGoroutines(runtime.NumGoroutine())
|
||||
|
||||
// Record system resource usage
|
||||
metricsCollector.SetCPUUsage(0.45) // 45% CPU usage
|
||||
metricsCollector.SetDiskUsage("/var/lib/CHORUS", 0.73) // 73% disk usage
|
||||
```
|
||||
|
||||
### Recording Errors
|
||||
|
||||
```go
|
||||
// Record error occurrence
|
||||
if err != nil {
|
||||
metricsCollector.IncrementErrors("dht", "timeout")
|
||||
}
|
||||
|
||||
// Record recovered panic
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
metricsCollector.IncrementPanics()
|
||||
// Handle panic...
|
||||
}
|
||||
}()
|
||||
```
|
||||
|
||||
## Prometheus Integration
|
||||
|
||||
### Scrape Configuration
|
||||
|
||||
Add the following to your `prometheus.yml`:
|
||||
|
||||
```yaml
|
||||
scrape_configs:
|
||||
- job_name: 'chorus-nodes'
|
||||
scrape_interval: 15s
|
||||
scrape_timeout: 10s
|
||||
metrics_path: '/metrics'
|
||||
static_configs:
|
||||
- targets:
|
||||
- 'chorus-node-01:9090'
|
||||
- 'chorus-node-02:9090'
|
||||
- 'chorus-node-03:9090'
|
||||
relabel_configs:
|
||||
- source_labels: [__address__]
|
||||
target_label: instance
|
||||
- source_labels: [__address__]
|
||||
regex: '([^:]+):.*'
|
||||
target_label: node
|
||||
replacement: '${1}'
|
||||
```
|
||||
|
||||
### Example Queries
|
||||
|
||||
#### P2P Network Health
|
||||
```promql
|
||||
# Average connected peers across cluster
|
||||
avg(chorus_p2p_connected_peers)
|
||||
|
||||
# Message rate per second
|
||||
rate(chorus_p2p_messages_sent_total[5m])
|
||||
|
||||
# 95th percentile message latency
|
||||
histogram_quantile(0.95, rate(chorus_p2p_message_latency_seconds_bucket[5m]))
|
||||
```
|
||||
|
||||
#### DHT Performance
|
||||
```promql
|
||||
# DHT operation success rate
|
||||
rate(chorus_dht_get_operations_total{status="success"}[5m]) /
|
||||
rate(chorus_dht_get_operations_total[5m])
|
||||
|
||||
# Average DHT operation latency
|
||||
rate(chorus_dht_operation_latency_seconds_sum[5m]) /
|
||||
rate(chorus_dht_operation_latency_seconds_count[5m])
|
||||
|
||||
# DHT cache hit rate
|
||||
rate(chorus_dht_cache_hits_total[5m]) /
|
||||
(rate(chorus_dht_cache_hits_total[5m]) + rate(chorus_dht_cache_misses_total[5m]))
|
||||
```
|
||||
|
||||
#### Election Stability
|
||||
```promql
|
||||
# Leadership changes per hour
|
||||
rate(chorus_leadership_changes_total[1h]) * 3600
|
||||
|
||||
# Nodes by election state
|
||||
sum by (state) (chorus_election_state)
|
||||
|
||||
# Heartbeat rate
|
||||
rate(chorus_heartbeats_sent_total[5m])
|
||||
```
|
||||
|
||||
#### Task Management
|
||||
```promql
|
||||
# Task success rate
|
||||
rate(chorus_tasks_completed_total{status="success"}[5m]) /
|
||||
rate(chorus_tasks_completed_total[5m])
|
||||
|
||||
# Average task duration
|
||||
histogram_quantile(0.50, rate(chorus_task_duration_seconds_bucket[5m]))
|
||||
|
||||
# Task queue depth
|
||||
chorus_tasks_queued
|
||||
```
|
||||
|
||||
#### Resource Utilization
|
||||
```promql
|
||||
# CPU usage by node
|
||||
chorus_cpu_usage_ratio
|
||||
|
||||
# Memory usage by node
|
||||
chorus_memory_usage_bytes / (1024 * 1024 * 1024) # Convert to GB
|
||||
|
||||
# Disk usage alert (>90%)
|
||||
chorus_disk_usage_ratio > 0.9
|
||||
```
|
||||
|
||||
#### System Health
|
||||
```promql
|
||||
# Overall system health score
|
||||
chorus_system_health_score
|
||||
|
||||
# Component health scores
|
||||
chorus_component_health_score
|
||||
|
||||
# Health check failure rate
|
||||
rate(chorus_health_checks_failed_total[5m])
|
||||
```
|
||||
|
||||
### Alerting Rules
|
||||
|
||||
Example Prometheus alerting rules for CHORUS:
|
||||
|
||||
```yaml
|
||||
groups:
|
||||
- name: chorus_alerts
|
||||
interval: 30s
|
||||
rules:
|
||||
# P2P connectivity alerts
|
||||
- alert: LowPeerCount
|
||||
expr: chorus_p2p_connected_peers < 2
|
||||
for: 5m
|
||||
labels:
|
||||
severity: warning
|
||||
annotations:
|
||||
summary: "Low P2P peer count on {{ $labels.instance }}"
|
||||
description: "Node has {{ $value }} peers (minimum: 2)"
|
||||
|
||||
# DHT performance alerts
|
||||
- alert: HighDHTFailureRate
|
||||
expr: |
|
||||
rate(chorus_dht_get_operations_total{status="failure"}[5m]) /
|
||||
rate(chorus_dht_get_operations_total[5m]) > 0.1
|
||||
for: 10m
|
||||
labels:
|
||||
severity: warning
|
||||
annotations:
|
||||
summary: "High DHT failure rate on {{ $labels.instance }}"
|
||||
description: "DHT failure rate: {{ $value | humanizePercentage }}"
|
||||
|
||||
# Election stability alerts
|
||||
- alert: FrequentLeadershipChanges
|
||||
expr: rate(chorus_leadership_changes_total[1h]) * 3600 > 5
|
||||
for: 15m
|
||||
labels:
|
||||
severity: warning
|
||||
annotations:
|
||||
summary: "Frequent leadership changes"
|
||||
description: "{{ $value }} leadership changes per hour"
|
||||
|
||||
# Task management alerts
|
||||
- alert: HighTaskQueueDepth
|
||||
expr: chorus_tasks_queued > 100
|
||||
for: 10m
|
||||
labels:
|
||||
severity: warning
|
||||
annotations:
|
||||
summary: "High task queue depth on {{ $labels.instance }}"
|
||||
description: "{{ $value }} tasks queued"
|
||||
|
||||
# Resource alerts
|
||||
- alert: HighMemoryUsage
|
||||
expr: chorus_memory_usage_bytes > 8 * 1024 * 1024 * 1024 # 8GB
|
||||
for: 5m
|
||||
labels:
|
||||
severity: warning
|
||||
annotations:
|
||||
summary: "High memory usage on {{ $labels.instance }}"
|
||||
description: "Memory usage: {{ $value | humanize1024 }}B"
|
||||
|
||||
- alert: HighDiskUsage
|
||||
expr: chorus_disk_usage_ratio > 0.9
|
||||
for: 10m
|
||||
labels:
|
||||
severity: critical
|
||||
annotations:
|
||||
summary: "High disk usage on {{ $labels.instance }}"
|
||||
description: "Disk usage: {{ $value | humanizePercentage }}"
|
||||
|
||||
# Health monitoring alerts
|
||||
- alert: LowSystemHealth
|
||||
expr: chorus_system_health_score < 0.75
|
||||
for: 5m
|
||||
labels:
|
||||
severity: warning
|
||||
annotations:
|
||||
summary: "Low system health score on {{ $labels.instance }}"
|
||||
description: "Health score: {{ $value }}"
|
||||
|
||||
- alert: ComponentUnhealthy
|
||||
expr: chorus_component_health_score < 0.5
|
||||
for: 10m
|
||||
labels:
|
||||
severity: warning
|
||||
annotations:
|
||||
summary: "Component {{ $labels.component }} unhealthy"
|
||||
description: "Health score: {{ $value }}"
|
||||
```
|
||||
|
||||
## HTTP Endpoints
|
||||
|
||||
### Metrics Endpoint
|
||||
|
||||
**URL**: `/metrics`
|
||||
**Method**: GET
|
||||
**Description**: Prometheus metrics in text exposition format
|
||||
|
||||
**Response Format**:
|
||||
```
|
||||
# HELP chorus_p2p_connected_peers Number of connected P2P peers
|
||||
# TYPE chorus_p2p_connected_peers gauge
|
||||
chorus_p2p_connected_peers 5
|
||||
|
||||
# HELP chorus_dht_put_operations_total Total number of DHT put operations
|
||||
# TYPE chorus_dht_put_operations_total counter
|
||||
chorus_dht_put_operations_total{status="success"} 1523
|
||||
chorus_dht_put_operations_total{status="failure"} 12
|
||||
|
||||
# HELP chorus_task_duration_seconds Task execution duration
|
||||
# TYPE chorus_task_duration_seconds histogram
|
||||
chorus_task_duration_seconds_bucket{task_type="data_processing",status="success",le="0.001"} 0
|
||||
chorus_task_duration_seconds_bucket{task_type="data_processing",status="success",le="0.005"} 12
|
||||
chorus_task_duration_seconds_bucket{task_type="data_processing",status="success",le="0.01"} 45
|
||||
...
|
||||
```
|
||||
|
||||
### Health Endpoint
|
||||
|
||||
**URL**: `/health`
|
||||
**Method**: GET
|
||||
**Description**: Basic health check for metrics server
|
||||
|
||||
**Response**: `200 OK` with body `OK`
|
||||
|
||||
## Best Practices
|
||||
|
||||
### Metric Naming
|
||||
- Use descriptive metric names with `chorus_` prefix
|
||||
- Follow Prometheus naming conventions: `component_metric_unit`
|
||||
- Use `_total` suffix for counters
|
||||
- Use `_seconds` suffix for time measurements
|
||||
- Use `_bytes` suffix for size measurements
|
||||
|
||||
### Label Usage
|
||||
- Keep label cardinality low (avoid high-cardinality labels like request IDs)
|
||||
- Use consistent label names across metrics
|
||||
- Document label meanings and expected values
|
||||
- Avoid labels that change frequently
|
||||
|
||||
### Performance Considerations
|
||||
- Metrics collection is lock-free for read operations
|
||||
- Histogram observations are optimized for high throughput
|
||||
- Background collectors run on separate goroutines
|
||||
- Custom registry prevents pollution of default registry
|
||||
|
||||
### Error Handling
|
||||
- Metrics collection should never panic
|
||||
- Failed metric updates should be logged but not block operations
|
||||
- Use nil checks before accessing metrics collectors
|
||||
|
||||
### Testing
|
||||
```go
|
||||
func TestMetrics(t *testing.T) {
|
||||
config := metrics.DefaultMetricsConfig()
|
||||
config.NodeID = "test-node"
|
||||
|
||||
m := metrics.NewCHORUSMetrics(config)
|
||||
|
||||
// Test metric updates
|
||||
m.SetConnectedPeers(5)
|
||||
m.IncrementMessagesSent("test", "peer1")
|
||||
|
||||
// Verify metrics are collected
|
||||
// (Use prometheus testutil for verification)
|
||||
}
|
||||
```
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
### Metrics Not Appearing
|
||||
1. Verify metrics server is running: `curl http://localhost:9090/metrics`
|
||||
2. Check configuration: ensure correct `ListenAddr` and `MetricsPath`
|
||||
3. Verify Prometheus scrape configuration
|
||||
4. Check for errors in application logs
|
||||
|
||||
### High Memory Usage
|
||||
1. Review label cardinality (check for unbounded label values)
|
||||
2. Adjust histogram buckets if too granular
|
||||
3. Reduce metric collection frequency
|
||||
4. Consider metric retention policies in Prometheus
|
||||
|
||||
### Missing Metrics
|
||||
1. Ensure metric is being updated by application code
|
||||
2. Verify metric registration in `initializeMetrics()`
|
||||
3. Check for race conditions in metric access
|
||||
4. Review metric type compatibility (Counter vs Gauge vs Histogram)
|
||||
|
||||
## Migration Guide
|
||||
|
||||
### From Default Prometheus Registry
|
||||
```go
|
||||
// Old approach
|
||||
prometheus.MustRegister(myCounter)
|
||||
|
||||
// New approach
|
||||
config := metrics.DefaultMetricsConfig()
|
||||
m := metrics.NewCHORUSMetrics(config)
|
||||
// Use m.IncrementErrors(...) instead of direct counter access
|
||||
```
|
||||
|
||||
### Adding New Metrics
|
||||
1. Add metric field to `CHORUSMetrics` struct
|
||||
2. Initialize metric in `initializeMetrics()` method
|
||||
3. Add helper methods for updating the metric
|
||||
4. Document the metric in this file
|
||||
5. Add Prometheus queries and alerts as needed
|
||||
|
||||
## Related Documentation
|
||||
|
||||
- [Health Package Documentation](./health.md)
|
||||
- [Shutdown Package Documentation](./shutdown.md)
|
||||
- [Prometheus Documentation](https://prometheus.io/docs/)
|
||||
- [Prometheus Best Practices](https://prometheus.io/docs/practices/naming/)
|
||||
1107
docs/comprehensive/packages/p2p.md
Normal file
1107
docs/comprehensive/packages/p2p.md
Normal file
File diff suppressed because it is too large
Load Diff
1060
docs/comprehensive/packages/pubsub.md
Normal file
1060
docs/comprehensive/packages/pubsub.md
Normal file
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user