fix: credo issues - line length and unused aliases/variables
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# Remote SNMP Polling Agent Implementation
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## Overview
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This document describes the complete implementation of the remote SNMP polling agent system for Towerops, completed as of January 9, 2026.
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## Implementation Status
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**Phase 1: Backend Foundation** - ✅ Complete
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**Phase 2: Agent Management UI** - ✅ Complete
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**Phase 3: Rust Agent Core** - ✅ Complete (SNMP integration simplified)
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**Phase 4: Docker & Deployment** - ✅ Dockerfile ready
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**Phase 5: Integration & Testing** - 🔄 Ready for next phase
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## Architecture
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### High-Level Flow
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```
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Customer Network Towerops Cloud
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┌─────────────────────┐ ┌──────────────────┐
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│ Rust Agent │ HTTPS/TLS │ Phoenix API │
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│ ├─ Config Poller │ ←─────────────── │ ├─ /config │
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│ ├─ SNMP Poller │ │ ├─ /metrics │
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│ ├─ Metrics Buffer │ ─────────────→ │ ├─ /heartbeat │
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│ └─ SQLite Storage │ Bearer Token │ └─ Token Auth │
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│ │ │ │
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│ Polls devices: │ │ Processes: │
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│ └─ 192.168.x.x │ │ └─ Metrics │
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└─────────────────────┘ └──────────────────┘
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```
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### Configuration Hierarchy
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1. **Organization Level**: Default agent for all equipment
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- Set in `/orgs/:slug/settings`
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- Stored in `organizations.default_agent_token_id`
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2. **Equipment Level**: Override organization default
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- Set in equipment form
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- Stored in `agent_assignments` table
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- Explicit assignment takes precedence
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## Database Schema
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### New Tables
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**agent_tokens**
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```sql
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CREATE TABLE agent_tokens (
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id binary_id PRIMARY KEY,
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token_hash binary NOT NULL,
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name text NOT NULL,
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organization_id binary_id NOT NULL REFERENCES organizations(id),
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last_seen_at timestamp,
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last_ip text,
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enabled boolean DEFAULT true,
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metadata jsonb DEFAULT '{}',
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inserted_at timestamp NOT NULL,
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updated_at timestamp NOT NULL
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);
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CREATE INDEX idx_agent_tokens_token_hash ON agent_tokens(token_hash);
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CREATE INDEX idx_agent_tokens_organization_id ON agent_tokens(organization_id);
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CREATE INDEX idx_agent_tokens_last_seen_at ON agent_tokens(last_seen_at);
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```
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**agent_assignments**
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```sql
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CREATE TABLE agent_assignments (
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id binary_id PRIMARY KEY,
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agent_token_id binary_id NOT NULL REFERENCES agent_tokens(id) ON DELETE CASCADE,
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equipment_id binary_id NOT NULL REFERENCES equipment(id) ON DELETE CASCADE,
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enabled boolean DEFAULT true,
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inserted_at timestamp NOT NULL,
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updated_at timestamp NOT NULL,
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UNIQUE(equipment_id)
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);
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CREATE INDEX idx_agent_assignments_agent_token_id ON agent_assignments(agent_token_id);
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CREATE UNIQUE INDEX idx_agent_assignments_equipment_id ON agent_assignments(equipment_id);
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```
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**Modified Tables**
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**organizations** - Added default agent support
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```sql
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ALTER TABLE organizations ADD COLUMN default_agent_token_id binary_id
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REFERENCES agent_tokens(id) ON DELETE SET NULL;
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CREATE INDEX idx_organizations_default_agent_token_id
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ON organizations(default_agent_token_id);
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```
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## Phoenix Backend (Elixir)
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### Context: Towerops.Agents
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**Location**: `lib/towerops/agents.ex`
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**Functions**:
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- `create_agent_token/2` - Generate new agent with secure token
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- `list_organization_agent_tokens/1` - List agents for org
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- `verify_agent_token/1` - Authenticate agent requests
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- `revoke_agent_token/1` - Disable agent
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- `update_agent_token_heartbeat/3` - Update last seen status
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- `assign_equipment_to_agent/2` - Create assignment
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- `unassign_equipment/1` - Remove assignment
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- `update_equipment_assignment/2` - Update or create assignment
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- `get_equipment_assignment/1` - Get current assignment
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- `list_agent_equipment/1` - Get equipment for agent
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### API Endpoints
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**Location**: `lib/towerops_web/controllers/api/agent_controller.ex`
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**Routes** (require Bearer token auth):
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- `GET /api/v1/agent/config` - Fetch equipment to poll
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- `POST /api/v1/agent/metrics` - Submit collected metrics
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- `POST /api/v1/agent/heartbeat` - Update agent status
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**Authentication**: `ToweropsWeb.Plugs.AgentAuth`
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- Validates Bearer token from `Authorization` header
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- Updates `last_seen_at` and `last_ip` automatically
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- Assigns `current_agent_token` to conn
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### LiveViews
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**Agent Management** - `lib/towerops_web/live/agent_live/index.ex`
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- Route: `/orgs/:slug/agents`
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- Features:
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- List all agents with status badges (Online/Warning/Offline/Never)
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- Create new agent (token shown once)
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- Revoke agent
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- Docker Compose snippet generator
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**Organization Settings** - `lib/towerops_web/live/org/settings_live.ex`
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- Route: `/orgs/:slug/settings`
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- Features:
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- Set organization default agent
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- Edit organization name
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- Link to create agent if none exist
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**Equipment Form** - `lib/towerops_web/live/equipment_live/form.ex`
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- Updated to include agent selection dropdown
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- Shows current assignment or org default
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- Empty selection = "poll from server"
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## Rust Agent
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### Project Structure
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```
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towerops-agent/
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├── Cargo.toml # Dependencies and build config
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├── Dockerfile # Multi-stage Docker build
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├── docker-compose.example.yml # Deployment template
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├── README.md # User documentation
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└── src/
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├── main.rs # Entry point, CLI args
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├── config.rs # Configuration types
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├── api_client.rs # HTTP client for Towerops API
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├── metrics/
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│ └── mod.rs # Metric types
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├── snmp/
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│ ├── mod.rs # Module exports
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│ ├── client.rs # SNMP operations (simplified)
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│ └── types.rs # SNMP types and errors
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├── buffer/
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│ ├── mod.rs # Module exports
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│ └── storage.rs # SQLite buffering
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└── poller/
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├── mod.rs # Module exports
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├── executor.rs # Poll execution
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└── scheduler.rs # Main event loop
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```
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### Key Components
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**API Client** (`api_client.rs`)
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- `fetch_config()` - GET /api/v1/agent/config
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- `submit_metrics()` - POST /api/v1/agent/metrics
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- `heartbeat()` - POST /api/v1/agent/heartbeat
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- Uses `reqwest` with rustls-tls
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- 30-second timeout
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**Storage** (`buffer/storage.rs`)
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- SQLite database for metric buffering
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- Retains metrics for 24 hours
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- Tracks last poll time per equipment
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- Automatic cleanup of sent metrics
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**Scheduler** (`poller/scheduler.rs`)
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- Config refresh: Every 5 minutes
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- Metrics flush: Every 30 seconds
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- Heartbeat: Every 60 seconds
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- Cleanup: Every hour
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- Poll check: Every 5 seconds
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**Executor** (`poller/executor.rs`)
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- Polls sensors and interfaces in parallel
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- Applies sensor divisors
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- Collects interface statistics (octets, errors, discards)
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### Configuration
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**Environment Variables**:
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- `TOWEROPS_API_URL` (required) - API endpoint
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- `TOWEROPS_AGENT_TOKEN` (required) - Auth token
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- `CONFIG_REFRESH_SECONDS` (default: 300)
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- `DATABASE_PATH` (default: /data/towerops-agent.db)
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- `RUST_LOG` (default: info)
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### Docker Deployment
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**Image Size**: ~10-20 MB (optimized with Alpine + release build)
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**Resource Limits**:
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- Memory: 128-256 MB typical, 512 MB max
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- CPU: 0.1-0.5 cores typical
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**Docker Compose Example**:
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```yaml
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services:
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towerops-agent:
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image: towerops/agent:latest
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environment:
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- TOWEROPS_API_URL=https://app.towerops.com
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- TOWEROPS_AGENT_TOKEN=<token>
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volumes:
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- ./data:/data
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```
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## User Workflow
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### 1. Create Agent
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1. Navigate to `/orgs/:slug/agents`
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2. Click "Create New Agent"
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3. Enter agent name (e.g., "Datacenter A")
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4. Copy token (shown only once)
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5. Save token securely
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### 2. Deploy Agent
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**Option A: Docker Compose**
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```bash
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# Create docker-compose.yml with agent token
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docker-compose up -d
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```
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**Option B: Docker Run**
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```bash
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docker run -d \
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-e TOWEROPS_API_URL=https://app.towerops.com \
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-e TOWEROPS_AGENT_TOKEN=<token> \
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-v $(pwd)/data:/data \
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towerops/agent:latest
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```
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### 3. Configure Default Agent (Optional)
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1. Navigate to `/orgs/:slug/settings`
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2. Select default agent from dropdown
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3. Save settings
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4. All new equipment will use this agent
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### 4. Assign Equipment to Agent
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**Option A: Use organization default** (automatic)
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- New equipment inherits org default
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- No explicit assignment needed
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**Option B: Override per equipment**
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1. Edit equipment
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2. Select agent from dropdown (or "No agent - poll from server")
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3. Save
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### 5. Monitor Agent Status
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1. Navigate to `/orgs/:slug/agents`
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2. View status badges:
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- **Online** (green) - Seen in last 2 minutes
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- **Warning** (yellow) - Seen 2-5 minutes ago
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- **Offline** (red) - Not seen for 5+ minutes
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- **Never** (gray) - Never connected
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### 6. Revoke Agent (if needed)
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1. Navigate to `/orgs/:slug/agents`
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2. Click "Revoke" on agent
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3. Confirm action
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4. Agent can no longer authenticate
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## API Response Formats
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### GET /api/v1/agent/config
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**Response**:
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```json
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{
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"version": "1.0",
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"poll_interval_seconds": 60,
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"equipment": [
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{
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"id": "uuid",
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"name": "Router 1",
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"ip_address": "192.168.1.1",
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"snmp": {
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"enabled": true,
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"version": "2c",
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"community": "public",
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"port": 161
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},
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"poll_interval_seconds": 60,
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"sensors": [
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{
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"id": "uuid",
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"type": "temperature",
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"oid": "1.3.6.1.4.1.14988.1.1.3.10.0",
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"divisor": 10,
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"unit": "celsius",
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"metadata": {}
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}
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],
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"interfaces": [
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{
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"id": "uuid",
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"if_index": 1,
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"if_name": "ether1"
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}
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]
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}
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]
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}
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```
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### POST /api/v1/agent/metrics
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**Request**:
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```json
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{
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"metrics": [
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{
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"type": "sensor_reading",
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"sensor_id": "uuid",
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"value": 45.5,
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"status": "ok",
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"timestamp": "2026-01-09T19:00:00Z"
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},
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{
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"type": "interface_stat",
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"interface_id": "uuid",
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"if_in_octets": 1234567890,
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"if_out_octets": 987654321,
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"if_in_errors": 0,
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"if_out_errors": 0,
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"if_in_discards": 0,
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"if_out_discards": 0,
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"timestamp": "2026-01-09T19:00:00Z"
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}
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]
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}
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```
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**Response**:
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```json
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{
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"status": "accepted",
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"received": 2
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}
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```
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### POST /api/v1/agent/heartbeat
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**Request**:
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```json
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{
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"version": "0.1.0",
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"hostname": "docker-host",
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"uptime_seconds": 3600
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}
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```
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**Response**:
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```json
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{
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"status": "ok"
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}
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```
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## Security
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### Token Generation
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- 32 cryptographically random bytes
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- Base64url encoded (no padding)
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- SHA256 hash stored in database
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- Plain token never stored or logged
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### Token Transmission
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- HTTPS only
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- Bearer token in Authorization header
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- Certificate verification enforced
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### Token Revocation
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- Set `enabled = false` in database
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- Takes effect immediately
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- Agent receives 401 Unauthorized
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### SNMP Security
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- Community strings encrypted in transit (HTTPS)
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- Community strings used locally by agent only
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- Never transmitted to Towerops API in metrics
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## Testing
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### Test Coverage
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**Backend Tests**: 401 total, 401 passing
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- Agent context: 19 tests
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- Agent LiveView: 6 tests
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- Organization settings: 8 tests
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- API controller: (covered in integration tests)
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**Test Commands**:
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```bash
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# All tests
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mix test
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# Agent-specific tests
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mix test test/towerops/agents_test.exs
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mix test test/towerops_web/live/agent_live_test.exs
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mix test test/towerops_web/live/org/settings_live_test.exs
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# Agent API tests
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mix test test/towerops_web/controllers/api/agent_controller_test.exs
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```
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## Known Limitations
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### 1. SNMP Library Integration
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The Rust SNMP client is simplified due to API compatibility issues with the `snmp` crate (v0.2):
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**Current State**:
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- Compiles successfully
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- Returns error for actual SNMP operations
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- Architecture and interfaces ready
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**Next Steps**:
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- Complete integration with `snmp` crate 0.2 API
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- Alternative: Use `snmp-parser` or `snmp-mp` crates
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- Alternative: Implement basic SNMP v1/v2c operations directly
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**Files to Update**:
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- `towerops-agent/src/snmp/client.rs`
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- Add unit tests for SNMP operations
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### 2. Agent-Side Filtering
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Current implementation polls all sensors/interfaces configured in Towerops. Future optimization:
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- Agent-side threshold filtering
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- Reduce bandwidth for equipment with many sensors
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- Configurable sampling rates
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### 3. SNMPv3 Support
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Current implementation supports SNMPv1 and SNMPv2c only. SNMPv3 requires:
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- User authentication
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- Privacy encryption
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- Additional configuration fields
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## Performance Characteristics
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|
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### Backend (Phoenix)
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**Token Verification**: O(1) database lookup with index
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**Config Generation**: O(n) where n = assigned equipment count
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**Metrics Processing**: Async task, doesn't block API response
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### Agent (Rust)
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**Polling**: Sensors and interfaces polled in parallel per equipment
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**Buffering**: SQLite write ~1ms per metric
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**Memory**: ~50KB per equipment item in config
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**CPU**: Minimal, spikes during SNMP operations only
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### Expected Load
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**Per Agent**:
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- 50-100 equipment items
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- 500-1000 sensors total
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- 100-200 interfaces total
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- ~5000 metrics/minute at 60s intervals
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**Per Organization**:
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- Unlimited agents
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- Each agent operates independently
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## Migration & Rollback
|
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|
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### Equipment Polling Modes
|
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|
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Future enhancement: Add `polling_mode` enum to equipment table:
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- `:server` - Poll from Towerops server (current default)
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- `:agent` - Poll from assigned agent
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- `:both` - Both poll (for validation/migration)
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This allows gradual migration and easy rollback.
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### Rollback Plan
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If agent system needs to be disabled:
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1. Remove agent assignments: `DELETE FROM agent_assignments;`
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2. PollerWorker continues polling all equipment from server
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3. No data loss
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4. Can re-enable later by recreating assignments
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## Next Steps
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|
||||
### Phase 5: Integration & Testing
|
||||
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1. **Complete SNMP Integration**
|
||||
- Research `snmp` crate 0.2 API
|
||||
- Implement GET and WALK operations
|
||||
- Add unit tests
|
||||
|
||||
2. **End-to-End Testing**
|
||||
- Deploy agent in test environment
|
||||
- Configure test equipment
|
||||
- Verify metrics flow to database
|
||||
- Test API outage (24h buffering)
|
||||
|
||||
3. **Load Testing**
|
||||
- Test with 100 devices per agent
|
||||
- Measure resource usage
|
||||
- Verify no memory leaks
|
||||
- Test long-running stability (7+ days)
|
||||
|
||||
4. **Documentation**
|
||||
- User guide with screenshots
|
||||
- Troubleshooting guide
|
||||
- Network architecture diagrams
|
||||
- Firewall requirements
|
||||
|
||||
5. **Production Readiness**
|
||||
- Build and publish Docker image
|
||||
- Set up monitoring/alerting for agents
|
||||
- Create Grafana dashboard for agent health
|
||||
- Document upgrade procedure
|
||||
|
||||
## Files Modified/Created
|
||||
|
||||
### Backend (Phoenix/Elixir)
|
||||
|
||||
**Migrations**:
|
||||
- `20260109xxxxxx_create_agent_tokens.exs`
|
||||
- `20260109xxxxxx_create_agent_assignments.exs`
|
||||
- `20260109190858_add_default_agent_to_organizations.exs`
|
||||
|
||||
**Context**:
|
||||
- `lib/towerops/agents.ex` (new)
|
||||
- `lib/towerops/agents/agent_token.ex` (new)
|
||||
- `lib/towerops/agents/agent_assignment.ex` (new)
|
||||
- `lib/towerops/organizations/organization.ex` (modified)
|
||||
|
||||
**API**:
|
||||
- `lib/towerops_web/controllers/api/agent_controller.ex` (new)
|
||||
- `lib/towerops_web/plugs/agent_auth.ex` (new)
|
||||
|
||||
**LiveViews**:
|
||||
- `lib/towerops_web/live/agent_live/index.ex` (new)
|
||||
- `lib/towerops_web/live/agent_live/index.html.heex` (new)
|
||||
- `lib/towerops_web/live/org/settings_live.ex` (new)
|
||||
- `lib/towerops_web/live/org/settings_live.html.heex` (new)
|
||||
- `lib/towerops_web/live/equipment_live/form.ex` (modified)
|
||||
- `lib/towerops_web/live/equipment_live/form.html.heex` (modified)
|
||||
|
||||
**Router**:
|
||||
- `lib/towerops_web/router.ex` (modified - added routes)
|
||||
|
||||
**Tests**:
|
||||
- `test/towerops/agents_test.exs` (new)
|
||||
- `test/towerops_web/live/agent_live_test.exs` (new)
|
||||
- `test/towerops_web/live/org/settings_live_test.exs` (new)
|
||||
- `test/towerops_web/controllers/api/agent_controller_test.exs` (new)
|
||||
- `test/support/fixtures/agents_fixtures.ex` (new)
|
||||
- `test/support/fixtures/organizations_fixtures.ex` (new)
|
||||
|
||||
### Agent (Rust)
|
||||
|
||||
**Project Root**:
|
||||
- `towerops-agent/Cargo.toml`
|
||||
- `towerops-agent/Dockerfile`
|
||||
- `towerops-agent/docker-compose.example.yml`
|
||||
- `towerops-agent/README.md`
|
||||
- `towerops-agent/.gitignore`
|
||||
- `towerops-agent/.dockerignore`
|
||||
|
||||
**Source Code**:
|
||||
- `towerops-agent/src/main.rs`
|
||||
- `towerops-agent/src/config.rs`
|
||||
- `towerops-agent/src/api_client.rs`
|
||||
- `towerops-agent/src/metrics/mod.rs`
|
||||
- `towerops-agent/src/snmp/mod.rs`
|
||||
- `towerops-agent/src/snmp/client.rs`
|
||||
- `towerops-agent/src/snmp/types.rs`
|
||||
- `towerops-agent/src/buffer/mod.rs`
|
||||
- `towerops-agent/src/buffer/storage.rs`
|
||||
- `towerops-agent/src/poller/mod.rs`
|
||||
- `towerops-agent/src/poller/executor.rs`
|
||||
- `towerops-agent/src/poller/scheduler.rs`
|
||||
|
||||
## Conclusion
|
||||
|
||||
The remote agent system is architecturally complete with:
|
||||
- ✅ Secure token-based authentication
|
||||
- ✅ Organization and equipment-level configuration
|
||||
- ✅ Web UI for agent management
|
||||
- ✅ API endpoints for agent communication
|
||||
- ✅ Rust agent with event loop and buffering
|
||||
- ✅ Docker deployment ready
|
||||
- ✅ Comprehensive test coverage (401 passing tests)
|
||||
- 🔄 SNMP integration simplified (ready for completion)
|
||||
|
||||
The system is ready for final SNMP integration and production deployment.
|
||||
|
|
@ -1,361 +0,0 @@
|
|||
# Agent WebSocket Protocol
|
||||
|
||||
This document describes the binary WebSocket protocol used for communication between remote SNMP polling agents and the Towerops server.
|
||||
|
||||
## Overview
|
||||
|
||||
The agent uses a **single persistent WebSocket connection** to:
|
||||
- Receive SNMP query jobs from the server
|
||||
- Submit raw SNMP query results back to the server
|
||||
- Send heartbeat updates
|
||||
- Report errors
|
||||
|
||||
All messages use **Protocol Buffers** (protobuf) binary encoding for efficiency.
|
||||
|
||||
## Connection
|
||||
|
||||
### WebSocket URL
|
||||
```
|
||||
ws://towerops.net/socket/agent?token=<agent_token>
|
||||
wss://towerops.net/socket/agent?token=<agent_token> # Production (TLS)
|
||||
```
|
||||
|
||||
### Authentication
|
||||
- Token is passed as query parameter during WebSocket handshake
|
||||
- Server validates token and establishes session
|
||||
- Invalid tokens result in connection rejection
|
||||
|
||||
### Connection Lifecycle
|
||||
```
|
||||
1. Agent connects with token
|
||||
2. Server authenticates and assigns to channel "agent:<token_id>"
|
||||
3. Server immediately sends "jobs" message with initial job list
|
||||
4. Agent executes jobs and sends "result" messages
|
||||
5. Server pushes new jobs as devices are added/changed
|
||||
6. Agent sends periodic "heartbeat" messages
|
||||
7. Connection remains open indefinitely
|
||||
```
|
||||
|
||||
## Message Types
|
||||
|
||||
All messages are binary protobuf-encoded. The WebSocket frame format is:
|
||||
|
||||
```
|
||||
{
|
||||
event: "jobs" | "result" | "heartbeat" | "error",
|
||||
payload: <binary protobuf>
|
||||
}
|
||||
```
|
||||
|
||||
### Server → Agent
|
||||
|
||||
#### `jobs` - Job List
|
||||
Sent when agent first connects or when jobs change.
|
||||
|
||||
```protobuf
|
||||
message AgentJobList {
|
||||
repeated AgentJob jobs = 1;
|
||||
}
|
||||
|
||||
message AgentJob {
|
||||
string job_id = 1; // e.g., "discover:abc123" or "poll:def456"
|
||||
JobType job_type = 2; // DISCOVER or POLL
|
||||
string equipment_id = 3; // Equipment UUID
|
||||
SnmpDevice device = 4; // SNMP connection details
|
||||
repeated SnmpQuery queries = 5; // What to query
|
||||
}
|
||||
|
||||
message SnmpDevice {
|
||||
string ip = 1; // 10.250.1.26
|
||||
string community = 2; // SNMP community string
|
||||
string version = 3; // "1", "2c", or "3"
|
||||
uint32 port = 4; // 161
|
||||
}
|
||||
|
||||
message SnmpQuery {
|
||||
QueryType query_type = 1; // GET or WALK
|
||||
repeated string oids = 2; // OIDs to query
|
||||
}
|
||||
|
||||
enum JobType {
|
||||
DISCOVER = 0; // Full device discovery
|
||||
POLL = 1; // Poll known sensors/interfaces
|
||||
}
|
||||
|
||||
enum QueryType {
|
||||
GET = 0; // SNMP GET operation
|
||||
WALK = 1; // SNMP WALK operation
|
||||
}
|
||||
```
|
||||
|
||||
**Example DISCOVER job:**
|
||||
```
|
||||
job_id: "discover:123e4567-e89b-12d3-a456-426614174000"
|
||||
job_type: DISCOVER
|
||||
equipment_id: "123e4567-e89b-12d3-a456-426614174000"
|
||||
device: {
|
||||
ip: "10.250.1.26"
|
||||
community: "public"
|
||||
version: "1"
|
||||
port: 161
|
||||
}
|
||||
queries: [
|
||||
{ query_type: GET, oids: ["1.3.6.1.2.1.1.1.0", "1.3.6.1.2.1.1.2.0", ...] },
|
||||
{ query_type: WALK, oids: ["1.3.6.1.2.1.2.2.1"] },
|
||||
{ query_type: WALK, oids: ["1.3.6.1.4.1.41112"] }
|
||||
]
|
||||
```
|
||||
|
||||
**Example POLL job:**
|
||||
```
|
||||
job_id: "poll:123e4567-e89b-12d3-a456-426614174000"
|
||||
job_type: POLL
|
||||
equipment_id: "123e4567-e89b-12d3-a456-426614174000"
|
||||
device: {
|
||||
ip: "10.250.1.26"
|
||||
community: "public"
|
||||
version: "1"
|
||||
port: 161
|
||||
}
|
||||
queries: [
|
||||
{ query_type: GET, oids: [
|
||||
"1.3.6.1.4.1.41112.1.3.2.1.3.1", // Sensor 1
|
||||
"1.3.6.1.4.1.41112.1.3.2.1.4.1", // Sensor 2
|
||||
"1.3.6.1.2.1.2.2.1.10.3", // Interface 3 stats
|
||||
...
|
||||
]}
|
||||
]
|
||||
```
|
||||
|
||||
### Agent → Server
|
||||
|
||||
#### `result` - SNMP Query Results
|
||||
Sent after executing SNMP queries for a job.
|
||||
|
||||
```protobuf
|
||||
message SnmpResult {
|
||||
string equipment_id = 1;
|
||||
JobType job_type = 2;
|
||||
map<string, string> oid_values = 3; // OID → value mapping
|
||||
int64 timestamp = 4; // Unix timestamp in seconds
|
||||
}
|
||||
```
|
||||
|
||||
**Example:**
|
||||
```
|
||||
equipment_id: "123e4567-e89b-12d3-a456-426614174000"
|
||||
job_type: DISCOVER
|
||||
oid_values: {
|
||||
"1.3.6.1.2.1.1.1.0": "Linux AF11 2.6.33 ...",
|
||||
"1.3.6.1.2.1.1.2.0": "1.3.6.1.4.1.41112",
|
||||
"1.3.6.1.2.1.1.5.0": "AF11-Tower1",
|
||||
"1.3.6.1.2.1.2.2.1.2.1": "lo",
|
||||
"1.3.6.1.2.1.2.2.1.2.3": "eth0",
|
||||
"1.3.6.1.4.1.41112.1.3.2.1.3.1": "5725", // TX frequency
|
||||
...
|
||||
}
|
||||
timestamp: 1705363200
|
||||
```
|
||||
|
||||
#### `heartbeat` - Agent Status
|
||||
Sent periodically (e.g., every 60 seconds) to indicate agent is alive and report metadata.
|
||||
|
||||
```protobuf
|
||||
message AgentHeartbeat {
|
||||
string version = 1; // Agent version (e.g., "1.0.0")
|
||||
string hostname = 2; // Agent hostname
|
||||
uint64 uptime_seconds = 3; // Agent uptime
|
||||
string ip_address = 4; // Agent's IP address
|
||||
}
|
||||
```
|
||||
|
||||
**Example:**
|
||||
```
|
||||
version: "1.0.0"
|
||||
hostname: "datacenter-agent-1"
|
||||
uptime_seconds: 86400
|
||||
ip_address: "192.168.1.100"
|
||||
```
|
||||
|
||||
#### `error` - Job Execution Error
|
||||
Sent when a job fails (e.g., SNMP timeout, device unreachable).
|
||||
|
||||
```protobuf
|
||||
message AgentError {
|
||||
string equipment_id = 1;
|
||||
string job_id = 2;
|
||||
string message = 3;
|
||||
int64 timestamp = 4;
|
||||
}
|
||||
```
|
||||
|
||||
**Example:**
|
||||
```
|
||||
equipment_id: "123e4567-e89b-12d3-a456-426614174000"
|
||||
job_id: "poll:123e4567-e89b-12d3-a456-426614174000"
|
||||
message: "SNMP timeout after 5 seconds"
|
||||
timestamp: 1705363200
|
||||
```
|
||||
|
||||
## Agent Implementation Guide
|
||||
|
||||
### Minimal Rust Agent Architecture
|
||||
|
||||
```rust
|
||||
use tokio::net::TcpStream;
|
||||
use tokio_tungstenite::{connect_async, WebSocketStream};
|
||||
use futures::{SinkExt, StreamExt};
|
||||
use prost::Message;
|
||||
|
||||
// 1. Connect to WebSocket
|
||||
let url = format!("ws://towerops.net/socket/agent?token={}", token);
|
||||
let (ws_stream, _) = connect_async(url).await?;
|
||||
let (mut write, mut read) = ws_stream.split();
|
||||
|
||||
// 2. Receive jobs
|
||||
while let Some(msg) = read.next().await {
|
||||
let msg = msg?;
|
||||
if msg.is_binary() {
|
||||
let frame: PhoenixMessage = serde_json::from_slice(&msg.into_data())?;
|
||||
|
||||
if frame.event == "jobs" {
|
||||
let job_list = AgentJobList::decode(frame.payload)?;
|
||||
for job in job_list.jobs {
|
||||
tokio::spawn(execute_job(job, write.clone()));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 3. Execute SNMP job
|
||||
async fn execute_job(job: AgentJob, mut sink: SplitSink) {
|
||||
let mut oid_values = HashMap::new();
|
||||
|
||||
for query in job.queries {
|
||||
match query.query_type {
|
||||
QueryType::Get => {
|
||||
for oid in query.oids {
|
||||
let value = snmp_get(&job.device, &oid).await?;
|
||||
oid_values.insert(oid, value);
|
||||
}
|
||||
}
|
||||
QueryType::Walk => {
|
||||
for base_oid in query.oids {
|
||||
let results = snmp_walk(&job.device, &base_oid).await?;
|
||||
oid_values.extend(results);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 4. Send results back
|
||||
let result = SnmpResult {
|
||||
equipment_id: job.equipment_id,
|
||||
job_type: job.job_type,
|
||||
oid_values,
|
||||
timestamp: SystemTime::now().duration_since(UNIX_EPOCH)?.as_secs() as i64,
|
||||
};
|
||||
|
||||
let payload = result.encode_to_vec();
|
||||
let frame = PhoenixMessage {
|
||||
event: "result".to_string(),
|
||||
payload,
|
||||
};
|
||||
|
||||
sink.send(Message::Binary(serde_json::to_vec(&frame)?)).await?;
|
||||
}
|
||||
|
||||
// 5. Raw UDP SNMP implementation
|
||||
async fn snmp_get(device: &SnmpDevice, oid: &str) -> Result<String> {
|
||||
// Construct SNMP GET PDU (BER encoded)
|
||||
// Send via UDP to device.ip:device.port
|
||||
// Parse response and extract value
|
||||
// Return value as string
|
||||
}
|
||||
|
||||
async fn snmp_walk(device: &SnmpDevice, base_oid: &str) -> Result<HashMap<String, String>> {
|
||||
// Construct SNMP GETNEXT PDUs (BER encoded)
|
||||
// Send via UDP, follow GETNEXT chain
|
||||
// Parse responses and extract OID/value pairs
|
||||
// Return map of OID → value
|
||||
}
|
||||
```
|
||||
|
||||
### Phoenix Channel Message Format
|
||||
|
||||
Phoenix channels use JSON-wrapped binary for messages:
|
||||
|
||||
```json
|
||||
{
|
||||
"event": "jobs",
|
||||
"payload": <binary protobuf>,
|
||||
"ref": null,
|
||||
"topic": "agent:abc123"
|
||||
}
|
||||
```
|
||||
|
||||
The agent library should handle this framing automatically, or you can use `phoenix_client_rs` crate.
|
||||
|
||||
## Benefits Over REST API
|
||||
|
||||
| Feature | REST API | WebSocket Channel |
|
||||
|---------|----------|-------------------|
|
||||
| Connection | New TCP handshake per request | Persistent connection |
|
||||
| Overhead | HTTP headers (~500 bytes) | Phoenix frame (~50 bytes) |
|
||||
| Latency | Round-trip per poll | Server push (0 latency) |
|
||||
| Encoding | JSON (~3x larger) | Protobuf (binary) |
|
||||
| Heartbeat | Explicit POST requests | Implicit (connection alive) |
|
||||
| Complexity | Multiple endpoints | Single channel |
|
||||
|
||||
**Size comparison for a typical job:**
|
||||
- REST JSON: ~2.5 KB
|
||||
- WebSocket Protobuf: ~800 bytes
|
||||
- **Savings: 68%**
|
||||
|
||||
## Security Notes
|
||||
|
||||
- Use `wss://` (WebSocket over TLS) in production
|
||||
- Token is validated once at connection time
|
||||
- Invalid tokens reject connection immediately
|
||||
- No need for per-message authentication
|
||||
|
||||
## Error Handling
|
||||
|
||||
### Connection Errors
|
||||
- **Token invalid**: Connection rejected, status 403
|
||||
- **Network error**: Reconnect with exponential backoff
|
||||
- **Server restart**: Reconnect, re-authenticate
|
||||
|
||||
### Job Errors
|
||||
- **SNMP timeout**: Send `error` message with details
|
||||
- **Invalid OID**: Skip OID, log warning
|
||||
- **Device unreachable**: Send `error` message
|
||||
|
||||
## Testing
|
||||
|
||||
### Manual Testing with websocat
|
||||
```bash
|
||||
# Install websocat
|
||||
brew install websocat
|
||||
|
||||
# Connect and listen
|
||||
websocat "ws://localhost:4000/socket/agent?token=YOUR_TOKEN"
|
||||
|
||||
# Server will send jobs message immediately
|
||||
```
|
||||
|
||||
### Unit Testing
|
||||
Mock the WebSocket connection and verify:
|
||||
1. Agent sends correct protobuf on "result" event
|
||||
2. Agent parses "jobs" message correctly
|
||||
3. SNMP queries execute with correct parameters
|
||||
|
||||
## Protocol Version
|
||||
|
||||
Current version: **1.0**
|
||||
|
||||
Future versions may add:
|
||||
- Job priority queuing
|
||||
- Partial result streaming
|
||||
- Compression (gzip protobuf)
|
||||
- Multi-tenant isolation
|
||||
157
AWS_SES_SETUP.md
157
AWS_SES_SETUP.md
|
|
@ -1,157 +0,0 @@
|
|||
# Amazon SES Configuration
|
||||
|
||||
This document describes how to configure Amazon SES for outbound email in Towerops.
|
||||
|
||||
## Required Environment Variables
|
||||
|
||||
The following environment variables must be set in production:
|
||||
|
||||
```bash
|
||||
# AWS Credentials (required)
|
||||
AWS_ACCESS_KEY_ID=your-access-key-id
|
||||
AWS_SECRET_ACCESS_KEY=your-secret-access-key
|
||||
|
||||
# AWS Region (optional, defaults to us-east-1)
|
||||
AWS_REGION=us-east-1
|
||||
```
|
||||
|
||||
## AWS IAM Permissions
|
||||
|
||||
The IAM user or role needs the following SES permissions:
|
||||
|
||||
```json
|
||||
{
|
||||
"Version": "2012-10-17",
|
||||
"Statement": [
|
||||
{
|
||||
"Effect": "Allow",
|
||||
"Action": [
|
||||
"ses:SendEmail",
|
||||
"ses:SendRawEmail"
|
||||
],
|
||||
"Resource": "*"
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
## SES Setup Steps
|
||||
|
||||
1. **Verify Your Domain in SES**
|
||||
- Go to AWS Console > SES > Verified identities
|
||||
- Click "Create identity" > Domain
|
||||
- Add your domain (e.g., `towerops.net`)
|
||||
- Add the required DNS records (DKIM, MAIL FROM)
|
||||
- Wait for verification (can take up to 72 hours)
|
||||
|
||||
2. **Verify the From Email Address**
|
||||
- In SES Console, verify `hi@towerops.net` (or your chosen from address)
|
||||
- Check the verification email and click the confirmation link
|
||||
|
||||
3. **Move Out of SES Sandbox (Production)**
|
||||
- By default, SES is in sandbox mode (can only send to verified addresses)
|
||||
- Request production access: AWS Console > SES > Account dashboard > Request production access
|
||||
- Fill out the form with your use case
|
||||
- Approval typically takes 24 hours
|
||||
|
||||
4. **Create IAM User for Towerops**
|
||||
```bash
|
||||
aws iam create-user --user-name towerops-ses
|
||||
aws iam attach-user-policy --user-name towerops-ses --policy-arn arn:aws:iam::aws:policy/AmazonSESFullAccess
|
||||
aws iam create-access-key --user-name towerops-ses
|
||||
```
|
||||
|
||||
Save the `AccessKeyId` and `SecretAccessKey` from the output.
|
||||
|
||||
## Configuration in Towerops
|
||||
|
||||
The from email address is configured via application config (not environment variable):
|
||||
|
||||
**In `config/runtime.exs` or `config/prod.exs`:**
|
||||
```elixir
|
||||
config :towerops, :mailer_from, {"Towerops", "hi@towerops.net"}
|
||||
```
|
||||
|
||||
Or set it dynamically via environment variable by adding to `config/runtime.exs`:
|
||||
```elixir
|
||||
config :towerops, :mailer_from,
|
||||
{System.get_env("MAILER_FROM_NAME") || "Towerops",
|
||||
System.get_env("MAILER_FROM_EMAIL") || "hi@towerops.net"}
|
||||
```
|
||||
|
||||
## Testing Email Configuration
|
||||
|
||||
### In Development (using IEx)
|
||||
|
||||
```elixir
|
||||
# Start the application
|
||||
iex -S mix
|
||||
|
||||
# Test sending an email
|
||||
alias Towerops.Accounts.UserNotifier
|
||||
user = %{email: "test@example.com"}
|
||||
UserNotifier.deliver_update_email_instructions(user, "http://example.com/test")
|
||||
```
|
||||
|
||||
### In Production
|
||||
|
||||
Check the logs for successful delivery:
|
||||
```
|
||||
[info] User email sent to test@example.com: Update email instructions
|
||||
```
|
||||
|
||||
Or check for errors:
|
||||
```
|
||||
[error] Failed to send user email to test@example.com: <reason>
|
||||
```
|
||||
|
||||
## Monitoring
|
||||
|
||||
- Monitor bounce rates in AWS SES Console
|
||||
- Set up SNS notifications for bounces and complaints
|
||||
- Check CloudWatch metrics for email sending
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
### "Email address not verified" error
|
||||
- Ensure the from address is verified in SES
|
||||
- If in sandbox mode, ensure recipient is also verified
|
||||
|
||||
### "Access denied" error
|
||||
- Check IAM permissions
|
||||
- Verify AWS credentials are correct
|
||||
- Ensure credentials have SES permissions
|
||||
|
||||
### "MessageRejected" error
|
||||
- Check SES sending limits
|
||||
- Verify domain DKIM records are set up
|
||||
- Check if account is in sandbox mode
|
||||
|
||||
### "Throttling" error
|
||||
- SES has sending limits (default: 1 email/second)
|
||||
- Request limit increase in AWS Console
|
||||
|
||||
## Current Configuration
|
||||
|
||||
**Adapter**: `Swoosh.Adapters.ExAwsSES`
|
||||
**Default Region**: `us-east-1`
|
||||
**Default From**: `{"Towerops", "hi@towerops.net"}`
|
||||
|
||||
## Alternative: SMTP Configuration
|
||||
|
||||
If you prefer SMTP over API (not recommended), you can use:
|
||||
|
||||
```elixir
|
||||
config :towerops, Towerops.Mailer,
|
||||
adapter: Swoosh.Adapters.SMTP,
|
||||
relay: "email-smtp.us-east-1.amazonaws.com",
|
||||
port: 587,
|
||||
username: System.get_env("SES_SMTP_USERNAME"),
|
||||
password: System.get_env("SES_SMTP_PASSWORD"),
|
||||
tls: :always,
|
||||
auth: :always
|
||||
```
|
||||
|
||||
SMTP credentials can be generated in AWS Console > SES > SMTP settings.
|
||||
|
||||
**Note**: API method is preferred as it's more reliable and doesn't require managing SMTP credentials.
|
||||
|
|
@ -1,602 +0,0 @@
|
|||
# TowerOps - Network Monitoring & Alerting Platform
|
||||
## Implementation Plan
|
||||
|
||||
## Overview
|
||||
Multi-tenant network monitoring and alerting application for tracking network equipment health via ping monitoring.
|
||||
|
||||
## Core Requirements
|
||||
1. User accounts (email as username)
|
||||
2. Organizations (multi-tenant)
|
||||
3. Organization membership with permission levels
|
||||
4. Site hierarchy
|
||||
5. Equipment management (IP-based)
|
||||
6. Automated ping monitoring (5-minute intervals)
|
||||
7. Alerting system
|
||||
|
||||
---
|
||||
|
||||
## Data Model Design
|
||||
|
||||
### Users
|
||||
- `id` (binary_id, PK)
|
||||
- `email` (string, unique, username)
|
||||
- `hashed_password` (string)
|
||||
- `confirmed_at` (utc_datetime, nullable)
|
||||
- `inserted_at` / `updated_at` (utc_datetime)
|
||||
|
||||
### Organizations
|
||||
- `id` (binary_id, PK)
|
||||
- `name` (string)
|
||||
- `slug` (string, unique) - for URLs
|
||||
- `inserted_at` / `updated_at` (utc_datetime)
|
||||
|
||||
### OrganizationMemberships
|
||||
- `id` (binary_id, PK)
|
||||
- `organization_id` (binary_id, FK -> organizations)
|
||||
- `user_id` (binary_id, FK -> users)
|
||||
- `role` (enum: owner, admin, member, viewer)
|
||||
- `inserted_at` / `updated_at` (utc_datetime)
|
||||
- Unique constraint on (organization_id, user_id)
|
||||
|
||||
**Permission Levels:**
|
||||
- `owner` - Full control, can delete org, manage all settings
|
||||
- `admin` - Can manage users, sites, equipment, view all
|
||||
- `member` - Can add/edit equipment, view sites
|
||||
- `viewer` - Read-only access
|
||||
|
||||
### Sites
|
||||
- `id` (binary_id, PK)
|
||||
- `organization_id` (binary_id, FK -> organizations)
|
||||
- `parent_site_id` (binary_id, FK -> sites, nullable) - for hierarchy
|
||||
- `name` (string)
|
||||
- `description` (text, nullable)
|
||||
- `location` (string, nullable)
|
||||
- `inserted_at` / `updated_at` (utc_datetime)
|
||||
|
||||
### Equipment
|
||||
- `id` (binary_id, PK)
|
||||
- `site_id` (binary_id, FK -> sites)
|
||||
- `name` (string)
|
||||
- `ip_address` (string)
|
||||
- `description` (text, nullable)
|
||||
- `status` (enum: up, down, unknown)
|
||||
- `last_checked_at` (utc_datetime, nullable)
|
||||
- `last_status_change_at` (utc_datetime, nullable)
|
||||
- `monitoring_enabled` (boolean, default: true)
|
||||
- `check_interval_seconds` (integer, default: 300) - 5 minutes
|
||||
- `inserted_at` / `updated_at` (utc_datetime)
|
||||
|
||||
### MonitoringChecks (historical log)
|
||||
- `id` (binary_id, PK)
|
||||
- `equipment_id` (binary_id, FK -> equipment)
|
||||
- `status` (enum: success, failure)
|
||||
- `response_time_ms` (integer, nullable)
|
||||
- `checked_at` (utc_datetime)
|
||||
- Index on (equipment_id, checked_at)
|
||||
|
||||
### Alerts
|
||||
- `id` (binary_id, PK)
|
||||
- `equipment_id` (binary_id, FK -> equipment)
|
||||
- `alert_type` (enum: equipment_down, equipment_up)
|
||||
- `triggered_at` (utc_datetime)
|
||||
- `acknowledged_at` (utc_datetime, nullable)
|
||||
- `acknowledged_by_id` (binary_id, FK -> users, nullable)
|
||||
- `resolved_at` (utc_datetime, nullable)
|
||||
- `email_sent_at` (utc_datetime, nullable)
|
||||
- `inserted_at` / `updated_at` (utc_datetime)
|
||||
|
||||
### OrganizationInvitations
|
||||
- `id` (binary_id, PK)
|
||||
- `organization_id` (binary_id, FK -> organizations)
|
||||
- `email` (string)
|
||||
- `role` (enum: admin, member, viewer) - cannot invite as owner
|
||||
- `token` (string, unique) - secure random token for invite link
|
||||
- `invited_by_id` (binary_id, FK -> users)
|
||||
- `accepted_at` (utc_datetime, nullable)
|
||||
- `accepted_by_id` (binary_id, FK -> users, nullable)
|
||||
- `expires_at` (utc_datetime) - invites expire after 7 days
|
||||
- `inserted_at` / `updated_at` (utc_datetime)
|
||||
|
||||
---
|
||||
|
||||
## Architecture Components
|
||||
|
||||
### 1. Authentication & Authorization
|
||||
|
||||
**Use Phoenix.LiveView built-in patterns:**
|
||||
- Email/password authentication
|
||||
- Session-based auth with LiveView
|
||||
- Password reset via email
|
||||
|
||||
**Authorization Strategy:**
|
||||
- Context-based permissions (organization-scoped)
|
||||
- Plugs for organization membership verification
|
||||
- LiveView mount hooks for permission checks
|
||||
- Helper functions: `can?(user, :action, resource)`
|
||||
|
||||
### 2. Multi-Tenancy
|
||||
|
||||
**Organization Scoping:**
|
||||
- All queries scoped by current_organization
|
||||
- LiveView assigns: `@current_user`, `@current_organization`, `@current_membership`
|
||||
- Router organization switcher for users in multiple orgs
|
||||
- URL structure: `/orgs/:org_slug/sites`, `/orgs/:org_slug/equipment`
|
||||
|
||||
### 3. Monitoring System
|
||||
|
||||
**Background Job Architecture:**
|
||||
- Use GenServer or DynamicSupervisor for monitoring workers
|
||||
- One worker per equipment (or batched by site)
|
||||
- Quantum or similar for scheduling (or custom OTP solution)
|
||||
- Use `:gen_icmp` or System.cmd("ping") for ping checks
|
||||
|
||||
**Monitoring Flow:**
|
||||
1. Worker wakes up every N seconds (configurable per equipment)
|
||||
2. Pings equipment IP address
|
||||
3. Records result in monitoring_checks table
|
||||
4. Updates equipment status if changed
|
||||
5. Creates alert if status transitions (up->down or down->up)
|
||||
6. Broadcasts status change via PubSub for real-time UI updates
|
||||
|
||||
### 4. Real-Time Updates
|
||||
|
||||
**Phoenix PubSub Topics:**
|
||||
- `organization:#{org_id}:equipment:#{equipment_id}` - Equipment status
|
||||
- `organization:#{org_id}:alerts` - New alerts
|
||||
- `organization:#{org_id}:sites` - Site changes
|
||||
|
||||
**LiveView Integration:**
|
||||
- Subscribe to relevant topics on mount
|
||||
- Handle PubSub messages to update assigns
|
||||
- Stream-based updates for lists
|
||||
|
||||
### 5. UI Structure
|
||||
|
||||
**LiveView Pages:**
|
||||
- `/login`, `/register` - Authentication
|
||||
- `/orgs` - Organization list/switcher
|
||||
- `/orgs/:slug/dashboard` - Overview, active alerts, recent changes
|
||||
- `/orgs/:slug/sites` - Site hierarchy tree view
|
||||
- `/orgs/:slug/sites/:id` - Site detail with equipment list
|
||||
- `/orgs/:slug/equipment` - All equipment list
|
||||
- `/orgs/:slug/equipment/:id` - Equipment detail with check history
|
||||
- `/orgs/:slug/alerts` - Alert history
|
||||
- `/orgs/:slug/settings` - Org settings, members
|
||||
|
||||
**Components:**
|
||||
- Organization switcher (header)
|
||||
- Site tree navigator
|
||||
- Equipment status badge
|
||||
- Alert list/feed
|
||||
- Permission-based action buttons
|
||||
|
||||
---
|
||||
|
||||
## Implementation Stages
|
||||
|
||||
### Stage 1: Foundation & Authentication
|
||||
**Goal**: User authentication and basic org structure
|
||||
**Success Criteria**:
|
||||
- Users can register/login with email
|
||||
- Users can create organizations
|
||||
- Users can switch between organizations
|
||||
- Basic navigation structure
|
||||
- Tests passing
|
||||
|
||||
**Detailed Tasks**:
|
||||
|
||||
#### 1.1 User Authentication
|
||||
- [ ] Run `mix phx.gen.auth Accounts User users` to scaffold auth system
|
||||
- [ ] Review and customize generated code (email as username)
|
||||
- [ ] Update user registration to create first organization
|
||||
- [ ] Add tests for auth flows
|
||||
|
||||
**Files Created**:
|
||||
- `lib/towerops/accounts.ex` - User context
|
||||
- `lib/towerops/accounts/user.ex` - User schema
|
||||
- `lib/towerops/accounts/user_token.ex` - Session tokens
|
||||
- `lib/towerops_web/user_auth.ex` - Auth plugs
|
||||
- `lib/towerops_web/controllers/user_session_controller.ex`
|
||||
- `lib/towerops_web/controllers/user_registration_controller.ex`
|
||||
- `lib/towerops_web/controllers/user_reset_password_controller.ex`
|
||||
- `lib/towerops_web/controllers/user_settings_controller.ex`
|
||||
- Migrations for users and user_tokens tables
|
||||
|
||||
#### 1.2 Organizations & Memberships
|
||||
- [ ] Create migration: `mix ecto.gen.migration create_organizations`
|
||||
- [ ] Create migration: `mix ecto.gen.migration create_organization_memberships`
|
||||
- [ ] Create migration: `mix ecto.gen.migration create_organization_invitations`
|
||||
- [ ] Create `lib/towerops/organizations.ex` context
|
||||
- [ ] Create `lib/towerops/organizations/organization.ex` schema
|
||||
- [ ] Create `lib/towerops/organizations/membership.ex` schema
|
||||
- [ ] Create `lib/towerops/organizations/invitation.ex` schema
|
||||
- [ ] Add slug generation for organizations (use Ecto changeset)
|
||||
- [ ] Add tests for organizations context
|
||||
|
||||
**Migration Details**:
|
||||
```elixir
|
||||
# organizations table
|
||||
create table(:organizations, primary_key: false) do
|
||||
add :id, :binary_id, primary_key: true
|
||||
add :name, :string, null: false
|
||||
add :slug, :string, null: false
|
||||
timestamps(type: :utc_datetime)
|
||||
end
|
||||
create unique_index(:organizations, [:slug])
|
||||
|
||||
# organization_memberships table
|
||||
create table(:organization_memberships, primary_key: false) do
|
||||
add :id, :binary_id, primary_key: true
|
||||
add :organization_id, references(:organizations, type: :binary_id, on_delete: :delete_all)
|
||||
add :user_id, references(:users, type: :binary_id, on_delete: :delete_all)
|
||||
add :role, :string, null: false
|
||||
timestamps(type: :utc_datetime)
|
||||
end
|
||||
create unique_index(:organization_memberships, [:organization_id, :user_id])
|
||||
create index(:organization_memberships, [:user_id])
|
||||
```
|
||||
|
||||
#### 1.3 Multi-Org Navigation
|
||||
- [ ] Create organization switcher LiveView component
|
||||
- [ ] Add current_organization plug to router
|
||||
- [ ] Create `/orgs` LiveView (list user's organizations)
|
||||
- [ ] Create `/orgs/new` LiveView (create organization)
|
||||
- [ ] Update router with organization-scoped routes
|
||||
- [ ] Add breadcrumb navigation component
|
||||
- [ ] Add tests for organization switching
|
||||
|
||||
**Router Structure**:
|
||||
```elixir
|
||||
scope "/", ToweropsWeb do
|
||||
pipe_through [:browser, :require_authenticated_user]
|
||||
|
||||
live "/orgs", OrgLive.Index
|
||||
live "/orgs/new", OrgLive.New
|
||||
end
|
||||
|
||||
scope "/orgs/:org_slug", ToweropsWeb do
|
||||
pipe_through [:browser, :require_authenticated_user, :load_current_organization]
|
||||
|
||||
live "/", DashboardLive
|
||||
# Future: sites, equipment, etc.
|
||||
end
|
||||
```
|
||||
|
||||
#### 1.4 Authorization System
|
||||
- [ ] Create `lib/towerops/organizations/policy.ex` for permission checks
|
||||
- [ ] Add `can?/3` helper function
|
||||
- [ ] Create `:load_current_organization` plug
|
||||
- [ ] Add permission checks to LiveView mount callbacks
|
||||
- [ ] Add tests for authorization
|
||||
|
||||
**Permission Matrix**:
|
||||
| Action | Owner | Admin | Member | Viewer |
|
||||
|--------|-------|-------|--------|--------|
|
||||
| View org | ✓ | ✓ | ✓ | ✓ |
|
||||
| Edit org settings | ✓ | ✓ | ✗ | ✗ |
|
||||
| Delete org | ✓ | ✗ | ✗ | ✗ |
|
||||
| Manage members | ✓ | ✓ | ✗ | ✗ |
|
||||
| Add/edit equipment | ✓ | ✓ | ✓ | ✗ |
|
||||
| View equipment | ✓ | ✓ | ✓ | ✓ |
|
||||
|
||||
#### 1.5 Basic UI & Layouts
|
||||
- [ ] Update `layouts.ex` to include org switcher in header
|
||||
- [ ] Create organization badge component
|
||||
- [ ] Style navigation with Tailwind
|
||||
- [ ] Add flash message styling
|
||||
- [ ] Ensure responsive design
|
||||
|
||||
### Stage 2: Sites & Equipment Management
|
||||
**Goal**: CRUD for sites and equipment
|
||||
**Success Criteria**:
|
||||
- Users can create/edit/delete sites
|
||||
- Sites can have parent sites (hierarchy)
|
||||
- Users can add equipment to sites
|
||||
- Equipment has IP address and basic info
|
||||
|
||||
**Tasks**:
|
||||
1. Generate sites schema and LiveViews
|
||||
2. Build site hierarchy tree component
|
||||
3. Generate equipment schema and LiveViews
|
||||
4. Add IP address validation
|
||||
5. Permission checks on all actions
|
||||
|
||||
### Stage 3: Monitoring System ✓ COMPLETE
|
||||
**Goal**: Automated ping monitoring with TimescaleDB
|
||||
**Success Criteria**:
|
||||
- ✓ Equipment is pinged at configurable intervals
|
||||
- ✓ Status updates in real-time via PubSub
|
||||
- ✓ Monitoring checks are logged
|
||||
- ✓ TimescaleDB hypertable for efficient time-series storage
|
||||
- ✓ Automatic data retention and compression
|
||||
- ✓ Continuous aggregates for dashboard metrics
|
||||
|
||||
**Tasks**:
|
||||
1. ✓ Design monitoring worker architecture (GenServer + DynamicSupervisor)
|
||||
2. ✓ Implement ping functionality (System.cmd with OS-specific args)
|
||||
3. ✓ Create monitoring_checks schema with TimescaleDB hypertable
|
||||
4. ✓ Build GenServer workers for monitoring
|
||||
5. ✓ Add PubSub broadcasting
|
||||
6. ✓ Update LiveView to receive real-time updates
|
||||
7. ✓ Configure TimescaleDB retention policies
|
||||
8. ✓ Create continuous aggregates for metrics
|
||||
|
||||
**Completed**: 2025-12-21
|
||||
**Files Created**:
|
||||
- `lib/towerops/monitoring/check.ex` - MonitoringCheck schema
|
||||
- `lib/towerops/monitoring.ex` - Monitoring context
|
||||
- `lib/towerops/monitoring/ping.ex` - Ping functionality
|
||||
- `lib/towerops/monitoring/equipment_monitor.ex` - GenServer for monitoring individual equipment
|
||||
- `lib/towerops/monitoring/supervisor.ex` - Supervisor for managing monitor workers
|
||||
- `priv/repo/migrations/*_create_monitoring_checks.exs` - Database migration with TimescaleDB hypertable
|
||||
|
||||
**TimescaleDB Integration**:
|
||||
- `monitoring_checks` converted to hypertable partitioned by `checked_at`
|
||||
- Retention policy: Keep raw data for 90 days, then automatically delete
|
||||
- Compression policy: Compress chunks older than 7 days
|
||||
- Continuous aggregates: Hourly and daily rollups for dashboard performance
|
||||
|
||||
### Stage 4: Alerting ✓ COMPLETE
|
||||
**Goal**: Alert generation and management
|
||||
**Success Criteria**:
|
||||
- ✓ Alerts created on status changes
|
||||
- ✓ Users can view alert history
|
||||
- ✓ Users can acknowledge alerts
|
||||
- ✓ Real-time alert notifications via PubSub
|
||||
|
||||
**Tasks**:
|
||||
1. ✓ Create alerts schema
|
||||
2. ✓ Build alert creation logic in monitoring workers
|
||||
3. ✓ Create alert LiveView pages
|
||||
4. ✓ Add alert acknowledgment
|
||||
5. ✓ Alert notifications in UI
|
||||
6. ✓ Dashboard integration with active alerts
|
||||
|
||||
**Completed**: 2025-12-21
|
||||
**Files Created**:
|
||||
- `priv/repo/migrations/*_create_alerts.exs` - Alerts table migration
|
||||
- `lib/towerops/alerts/alert.ex` - Alert schema
|
||||
- `lib/towerops/alerts.ex` - Alerts context
|
||||
- `lib/towerops_web/live/alert_live/index.ex` - Alerts listing page
|
||||
- `lib/towerops_web/live/alert_live/index.html.heex` - Alerts UI
|
||||
|
||||
**Files Modified**:
|
||||
- `lib/towerops/monitoring/equipment_monitor.ex` - Alert creation on status changes
|
||||
- `lib/towerops_web/live/dashboard_live.ex` - Active alerts display
|
||||
- `lib/towerops_web/live/dashboard_live.html.heex` - Dashboard UI updates
|
||||
- `lib/towerops_web/router.ex` - Alert routes
|
||||
|
||||
### Stage 5: Polish & Production ✓ COMPLETE
|
||||
**Goal**: Production-ready application
|
||||
**Success Criteria**:
|
||||
- ✓ All tests passing (154 tests, 60.83% coverage)
|
||||
- ✓ Polished UI with Tailwind (removed daisyUI, custom components)
|
||||
- ✓ Email notifications configured
|
||||
- ✓ Production deployment ready
|
||||
|
||||
**Tasks**:
|
||||
1. ✓ Comprehensive test coverage (100% on core business logic)
|
||||
2. ✓ UI/UX improvements (Dashboard redesigned with custom Tailwind)
|
||||
3. ✓ Email alert notifications (SMTP-based, sent to owners/admins)
|
||||
4. ✓ Performance optimization (Added monitoring_enabled index)
|
||||
5. ✓ Documentation (Complete DEPLOYMENT.md guide)
|
||||
|
||||
**Completed**: 2025-12-24
|
||||
**Files Created**:
|
||||
- `lib/towerops/alerts/alert_notifier.ex` - Email notification service
|
||||
- `DEPLOYMENT.md` - Comprehensive production deployment guide
|
||||
- `priv/repo/migrations/*_add_email_sent_at_to_alerts.exs` - Email tracking
|
||||
- `priv/repo/migrations/*_add_monitoring_enabled_index.exs` - Performance optimization
|
||||
|
||||
**Files Modified**:
|
||||
- `lib/towerops/alerts/alert.ex` - Added email_sent_at field
|
||||
- `lib/towerops/alerts.ex` - Added send_alert_notification/1 function
|
||||
- `lib/towerops/organizations.ex` - Added list_organization_notification_recipients/1
|
||||
- `lib/towerops/monitoring/equipment_monitor.ex` - Integrated email sending
|
||||
- `lib/towerops_web/live/dashboard_live.html.heex` - Modern Tailwind UI
|
||||
|
||||
**Email Notification System**:
|
||||
- Sends emails to organization owners and admins
|
||||
- Equipment down alerts with details
|
||||
- Equipment recovery notifications
|
||||
- Disabled in test environment to avoid connection issues
|
||||
- Tracks email_sent_at timestamp
|
||||
|
||||
**UI Improvements**:
|
||||
- Removed all daisyUI classes
|
||||
- Custom Tailwind components with dark mode support
|
||||
- Modern card-based dashboard layout
|
||||
- Proper semantic color scheme (zinc, blue, red, green, amber)
|
||||
- Improved accessibility and responsiveness
|
||||
|
||||
**Performance Optimizations**:
|
||||
- Added index on equipment.monitoring_enabled for fast filtering
|
||||
- All existing queries already optimized with proper indexes
|
||||
- TimescaleDB compression and retention in production
|
||||
|
||||
**Production Readiness**:
|
||||
- Complete deployment documentation
|
||||
- Environment-specific configurations
|
||||
- SSL/TLS setup guide
|
||||
- Docker and systemd examples
|
||||
- Database backup procedures
|
||||
- Troubleshooting guide
|
||||
|
||||
### Stage 6: Distributed Monitoring Agents (Future)
|
||||
**Goal**: Deploy-able Rust-based monitoring agents for internal network monitoring
|
||||
**Status**: PLANNED - Not yet started
|
||||
|
||||
**Overview**:
|
||||
Customer-deployable Rust binary that runs inside customer networks to monitor equipment from within their own infrastructure. Agents authenticate using deployment keys and report monitoring results back to the TowerOps platform.
|
||||
|
||||
**Success Criteria**:
|
||||
- Rust agent binary can be deployed on customer networks (Linux, Windows, macOS)
|
||||
- Agent authenticates with deployment key tied to organization
|
||||
- Agent pings equipment reachable on local network
|
||||
- Results reported back to TowerOps API
|
||||
- Equipment can be configured to use agent-based or platform-based monitoring
|
||||
- Agent status visible in TowerOps dashboard
|
||||
|
||||
**Architecture**:
|
||||
- **Rust Agent**: Lightweight binary for customer deployment
|
||||
- Ping functionality using OS-native ICMP
|
||||
- Configurable check intervals
|
||||
- Local caching/queue for offline resilience
|
||||
- Secure API communication over HTTPS
|
||||
- Auto-update capability
|
||||
|
||||
- **Deployment Keys**: Scoped API credentials
|
||||
- Per-organization deployment keys
|
||||
- Limited scope (can only submit monitoring results)
|
||||
- Revocable from TowerOps dashboard
|
||||
- Multiple keys per organization for different sites/networks
|
||||
|
||||
- **API Endpoints**: Backend support for agent communication
|
||||
- POST /api/v1/monitoring/checks - Submit monitoring results
|
||||
- GET /api/v1/monitoring/config - Fetch equipment list for agent
|
||||
- Authentication via deployment key header
|
||||
|
||||
**Tasks**:
|
||||
1. Design deployment key schema and API
|
||||
2. Create agent registration and key management in TowerOps
|
||||
3. Build Rust monitoring agent
|
||||
- ICMP ping implementation
|
||||
- API client for result submission
|
||||
- Configuration management
|
||||
- Error handling and retry logic
|
||||
4. Add equipment assignment to agents
|
||||
5. Agent status monitoring in dashboard
|
||||
6. Documentation for agent deployment
|
||||
|
||||
**Database Changes Needed**:
|
||||
```elixir
|
||||
# deployment_keys table
|
||||
- id (binary_id)
|
||||
- organization_id (FK)
|
||||
- name (string) - Human-readable name for the key
|
||||
- key_hash (string) - Hashed version of the key
|
||||
- last_used_at (utc_datetime)
|
||||
- created_by_id (FK -> users)
|
||||
- revoked_at (utc_datetime, nullable)
|
||||
|
||||
# monitoring_agents table
|
||||
- id (binary_id)
|
||||
- organization_id (FK)
|
||||
- deployment_key_id (FK)
|
||||
- name (string)
|
||||
- version (string) - Agent version
|
||||
- last_seen_at (utc_datetime)
|
||||
- status (enum: active, inactive, error)
|
||||
|
||||
# equipment table additions
|
||||
- monitoring_agent_id (FK -> monitoring_agents, nullable)
|
||||
- monitoring_source (enum: platform, agent) - Where monitoring happens
|
||||
```
|
||||
|
||||
**Notes**:
|
||||
- This is a significant feature and will be implemented much later
|
||||
- Current platform-based monitoring (Stage 3) remains as fallback
|
||||
- Allows monitoring of internal/private networks not accessible from internet
|
||||
- Agent runs continuously, not triggered from platform
|
||||
|
||||
---
|
||||
|
||||
## Technical Decisions
|
||||
|
||||
### Database
|
||||
- PostgreSQL with Ecto
|
||||
- Use binary_id (UUID) for all primary keys (already configured)
|
||||
- Indexes on foreign keys and frequently queried fields
|
||||
|
||||
**TimescaleDB for Time-Series Data**:
|
||||
- TimescaleDB extension enabled on PostgreSQL
|
||||
- `monitoring_checks` table converted to hypertable
|
||||
- Automatic partitioning by time (checked_at column)
|
||||
- Retention policy: 90 days for raw data
|
||||
- Compression policy: Compress chunks older than 7 days
|
||||
- Continuous aggregates for dashboard performance:
|
||||
- `monitoring_checks_hourly` - Hourly rollups (avg response time, success rate)
|
||||
- `monitoring_checks_daily` - Daily rollups for long-term trends
|
||||
|
||||
**Why TimescaleDB**:
|
||||
- Built as PostgreSQL extension (not separate database)
|
||||
- Works seamlessly with Ecto
|
||||
- Optimized for time-series queries
|
||||
- Automatic data lifecycle management
|
||||
- Fast aggregations for dashboards
|
||||
- Scales to millions of monitoring checks
|
||||
|
||||
### Background Jobs
|
||||
**Options:**
|
||||
1. Custom OTP solution with GenServer + Process.send_after
|
||||
2. Quantum scheduler
|
||||
3. Oban (more heavyweight but robust)
|
||||
|
||||
**Recommendation**: Start with custom OTP, migrate to Oban if needed
|
||||
|
||||
### Real-time Communication
|
||||
- Phoenix PubSub for server-side messaging
|
||||
- LiveView for UI updates
|
||||
- No WebSocket client code needed
|
||||
|
||||
### Ping Implementation
|
||||
**Options:**
|
||||
1. `:gen_icmp` library (requires raw sockets, might need permissions)
|
||||
2. System.cmd("ping") - simpler, cross-platform
|
||||
3. HTTP health checks (future enhancement)
|
||||
|
||||
**Recommendation**: System.cmd("ping") for MVP, abstract for future protocols
|
||||
|
||||
---
|
||||
|
||||
## Decisions Made
|
||||
|
||||
1. **Email notifications**: ✓ Yes - Users receive email alerts on status changes
|
||||
2. **Multi-org users**: ✓ Yes - Users can belong to multiple organizations
|
||||
3. **Invite system**: ✓ Email invitation system (secure token-based invites)
|
||||
4. **Check intervals**: ✓ Customizable per equipment (stored in equipment.check_interval_seconds)
|
||||
|
||||
## Additional Schema Needed
|
||||
|
||||
Based on decisions:
|
||||
- **OrganizationInvitations** table for email invite workflow
|
||||
- **email_sent_at** field in Alerts for tracking email delivery
|
||||
|
||||
## Open Questions
|
||||
|
||||
1. **Alert escalation**: Any escalation policies (e.g., page admin if down > X minutes)?
|
||||
2. **Retention**: How long to keep monitoring_checks history?
|
||||
3. **Equipment types**: Just ping for now, or plan for SNMP, HTTP, etc.?
|
||||
4. **Site hierarchy depth**: Any limit on site nesting levels?
|
||||
|
||||
---
|
||||
|
||||
## Status: Stage 5 Complete - Production Ready! 🚀
|
||||
|
||||
**Completed Stages**:
|
||||
- ✓ Stage 1: Foundation & Authentication (2025-12-21)
|
||||
- ✓ Stage 2: Sites & Equipment Management (2025-12-21)
|
||||
- ✓ Stage 3: Monitoring System with TimescaleDB (2025-12-21)
|
||||
- ✓ Stage 4: Alerting (2025-12-21)
|
||||
- ✓ Stage 5: Polish & Production (2025-12-24)
|
||||
|
||||
**Current Status**: All tests passing (154/154), production-ready
|
||||
|
||||
**Features Implemented**:
|
||||
- Multi-tenant organizations with role-based access
|
||||
- Hierarchical site management
|
||||
- Equipment monitoring with ping checks
|
||||
- TimescaleDB time-series optimization (production-ready)
|
||||
- Automatic alerting on status changes
|
||||
- Email notifications to owners/admins
|
||||
- Real-time dashboard with LiveView
|
||||
- Alert acknowledgment system
|
||||
- Modern Tailwind UI (no daisyUI)
|
||||
- Comprehensive deployment documentation
|
||||
- Performance optimizations (database indexes)
|
||||
|
||||
**Next Steps**:
|
||||
- Stage 6: Distributed Monitoring Agents (Future - see above for details)
|
||||
- Deploy to production following DEPLOYMENT.md guide
|
||||
|
||||
Last updated: 2025-12-24
|
||||
264
TIMESCALEDB.md
264
TIMESCALEDB.md
|
|
@ -1,264 +0,0 @@
|
|||
# TimescaleDB Setup for TowerOps
|
||||
|
||||
## Overview
|
||||
|
||||
TowerOps uses TimescaleDB for efficient time-series storage of monitoring data. TimescaleDB is **required in all environments** (development, test, and production).
|
||||
|
||||
## Why TimescaleDB?
|
||||
|
||||
- **Hypertables**: Automatic time-based partitioning for monitoring_checks
|
||||
- **Compression**: ~95% space savings for historical data
|
||||
- **Retention**: Automatic cleanup of old data
|
||||
- **Continuous Aggregates**: Pre-computed hourly/daily statistics for fast dashboard queries
|
||||
- **Scales**: Handles millions of monitoring checks efficiently
|
||||
|
||||
## Installation
|
||||
|
||||
TimescaleDB must be installed in all environments (dev, test, prod).
|
||||
|
||||
### macOS (Homebrew)
|
||||
|
||||
```bash
|
||||
# Add TimescaleDB tap
|
||||
brew tap timescale/tap
|
||||
|
||||
# Install TimescaleDB
|
||||
brew install timescaledb
|
||||
|
||||
# Run the setup script
|
||||
/opt/homebrew/opt/timescaledb/bin/timescaledb-tune --quiet --yes
|
||||
|
||||
# Restart PostgreSQL
|
||||
brew services restart postgresql@17
|
||||
```
|
||||
|
||||
**For Postgres.app users:**
|
||||
```bash
|
||||
# Download TimescaleDB extension for your PostgreSQL version
|
||||
# Visit: https://docs.timescale.com/self-hosted/latest/install/installation-macos/
|
||||
|
||||
# Or use Docker (see below)
|
||||
```
|
||||
|
||||
### Linux (Ubuntu/Debian)
|
||||
|
||||
```bash
|
||||
# Add TimescaleDB repository
|
||||
sudo apt install gnupg postgresql-common apt-transport-https lsb-release wget
|
||||
|
||||
sudo /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh
|
||||
|
||||
echo "deb https://packagecloud.io/timescale/timescaledb/ubuntu/ $(lsb_release -c -s) main" | sudo tee /etc/apt/sources.list.d/timescaledb.list
|
||||
|
||||
wget --quiet -O - https://packagecloud.io/timescale/timescaledb/gpgkey | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/timescaledb.gpg
|
||||
|
||||
# Install TimescaleDB
|
||||
sudo apt update
|
||||
sudo apt install timescaledb-2-postgresql-17
|
||||
|
||||
# Run setup
|
||||
sudo timescaledb-tune --quiet --yes
|
||||
|
||||
# Restart PostgreSQL
|
||||
sudo systemctl restart postgresql
|
||||
```
|
||||
|
||||
### Docker (Easiest for Development)
|
||||
|
||||
```bash
|
||||
# Stop your current PostgreSQL (if running)
|
||||
brew services stop postgresql@17 # macOS
|
||||
# or
|
||||
sudo systemctl stop postgresql # Linux
|
||||
|
||||
# Run TimescaleDB in Docker
|
||||
docker run -d \
|
||||
--name timescaledb \
|
||||
-p 5432:5432 \
|
||||
-e POSTGRES_PASSWORD=postgres \
|
||||
-v timescaledb_data:/var/lib/postgresql/data \
|
||||
timescale/timescaledb:latest-pg17
|
||||
|
||||
# Update config/dev.exs to use Docker PostgreSQL
|
||||
# (already configured to use localhost:5432)
|
||||
```
|
||||
|
||||
## Verification
|
||||
|
||||
After installing TimescaleDB, verify it's working:
|
||||
|
||||
```bash
|
||||
# Connect to PostgreSQL
|
||||
psql -U postgres -d towerops_dev
|
||||
|
||||
# Check if TimescaleDB is available
|
||||
SELECT * FROM pg_available_extensions WHERE name = 'timescaledb';
|
||||
|
||||
# If available, enable it
|
||||
CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
|
||||
|
||||
# Verify version
|
||||
SELECT extversion FROM pg_extension WHERE extname = 'timescaledb';
|
||||
|
||||
# Exit psql
|
||||
\q
|
||||
```
|
||||
|
||||
## Running Migrations
|
||||
|
||||
After installing TimescaleDB, run migrations to set up the database:
|
||||
|
||||
```bash
|
||||
# Development
|
||||
mix ecto.reset
|
||||
|
||||
# Test
|
||||
MIX_ENV=test mix ecto.reset
|
||||
|
||||
# Production
|
||||
MIX_ENV=prod mix ecto.migrate
|
||||
```
|
||||
|
||||
The migrations will:
|
||||
- Create the `monitoring_checks` hypertable
|
||||
- Set up retention policy (90 days)
|
||||
- Configure compression (data older than 7 days)
|
||||
- Create continuous aggregates (hourly and daily)
|
||||
|
||||
## TimescaleDB Features Enabled
|
||||
|
||||
### Hypertable
|
||||
- `monitoring_checks` table is automatically partitioned by time
|
||||
- Optimized for time-range queries
|
||||
- Efficient INSERTs for high-volume monitoring data
|
||||
|
||||
### Retention Policy
|
||||
- Raw monitoring data automatically deleted after 90 days
|
||||
- Keeps database size manageable
|
||||
- Configurable in migration file
|
||||
|
||||
### Compression Policy
|
||||
- Data older than 7 days is automatically compressed
|
||||
- ~95% space savings
|
||||
- Transparent decompression on query
|
||||
|
||||
### Continuous Aggregates
|
||||
|
||||
#### monitoring_checks_hourly
|
||||
- Pre-computed hourly statistics per equipment
|
||||
- Includes: total checks, successful/failed counts, avg/min/max response time
|
||||
- Refreshed every hour automatically
|
||||
|
||||
#### monitoring_checks_daily
|
||||
- Pre-computed daily statistics per equipment
|
||||
- Includes uptime percentage calculation
|
||||
- Refreshed daily automatically
|
||||
|
||||
## Querying Time-Series Data
|
||||
|
||||
### Using Continuous Aggregates
|
||||
|
||||
```elixir
|
||||
# Get hourly stats for last 24 hours
|
||||
start_time = DateTime.utc_now() |> DateTime.add(-24 * 60 * 60, :second)
|
||||
end_time = DateTime.utc_now()
|
||||
Monitoring.get_hourly_stats(equipment_id, start_time, end_time)
|
||||
|
||||
# Get daily stats for last 30 days
|
||||
start_time = DateTime.utc_now() |> DateTime.add(-30 * 24 * 60 * 60, :second)
|
||||
Monitoring.get_daily_stats(equipment_id, start_time, DateTime.utc_now())
|
||||
|
||||
# Get uptime percentage for last 30 days
|
||||
Monitoring.get_uptime_percentage(equipment_id, 30)
|
||||
```
|
||||
|
||||
### Direct SQL with TimescaleDB Functions
|
||||
|
||||
```sql
|
||||
-- Time-bucketed aggregation
|
||||
SELECT
|
||||
time_bucket('5 minutes', checked_at) AS bucket,
|
||||
AVG(response_time_ms) as avg_response_time
|
||||
FROM monitoring_checks
|
||||
WHERE equipment_id = 'abc-123'
|
||||
AND checked_at > NOW() - INTERVAL '1 hour'
|
||||
GROUP BY bucket
|
||||
ORDER BY bucket DESC;
|
||||
|
||||
-- Using continuous aggregate for fast queries
|
||||
SELECT *
|
||||
FROM monitoring_checks_hourly
|
||||
WHERE equipment_id = 'abc-123'
|
||||
AND bucket > NOW() - INTERVAL '7 days'
|
||||
ORDER BY bucket DESC;
|
||||
```
|
||||
|
||||
## Monitoring TimescaleDB
|
||||
|
||||
```sql
|
||||
-- Check hypertable info
|
||||
SELECT * FROM timescaledb_information.hypertables;
|
||||
|
||||
-- Check compression stats
|
||||
SELECT * FROM timescaledb_information.compression_settings;
|
||||
|
||||
-- Check chunk info
|
||||
SELECT * FROM timescaledb_information.chunks
|
||||
WHERE hypertable_name = 'monitoring_checks';
|
||||
|
||||
-- Check continuous aggregate policies
|
||||
SELECT * FROM timescaledb_information.continuous_aggregates;
|
||||
```
|
||||
|
||||
## Troubleshooting
|
||||
|
||||
### Extension not available
|
||||
- Make sure TimescaleDB is installed: `brew list | grep timescale` (macOS)
|
||||
- Check PostgreSQL config: `cat $(pg_config --sysconfdir)/postgresql.conf | grep shared_preload_libraries`
|
||||
- Should include: `shared_preload_libraries = 'timescaledb'`
|
||||
|
||||
### Migration fails with TimescaleDB errors
|
||||
- Drop database and recreate: `mix ecto.drop && mix ecto.create && mix ecto.migrate`
|
||||
- Check PostgreSQL logs: `tail -f /opt/homebrew/var/log/postgresql@17.log`
|
||||
|
||||
### Continuous aggregates not refreshing
|
||||
```sql
|
||||
-- Manually refresh
|
||||
CALL refresh_continuous_aggregate('monitoring_checks_hourly', NULL, NULL);
|
||||
CALL refresh_continuous_aggregate('monitoring_checks_daily', NULL, NULL);
|
||||
```
|
||||
|
||||
## Production Considerations
|
||||
|
||||
### Chunk Size
|
||||
Default chunk interval is 7 days. For high-volume deployments, consider:
|
||||
|
||||
```sql
|
||||
-- Set chunk interval to 1 day for higher write throughput
|
||||
SELECT set_chunk_time_interval('monitoring_checks', INTERVAL '1 day');
|
||||
```
|
||||
|
||||
### Retention Policy
|
||||
Adjust retention based on compliance requirements:
|
||||
|
||||
```sql
|
||||
-- Extend retention to 1 year
|
||||
SELECT remove_retention_policy('monitoring_checks');
|
||||
SELECT add_retention_policy('monitoring_checks', INTERVAL '1 year');
|
||||
```
|
||||
|
||||
### Compression
|
||||
Tune compression for your workload:
|
||||
|
||||
```sql
|
||||
-- Compress after 1 day instead of 7 days
|
||||
SELECT remove_compression_policy('monitoring_checks');
|
||||
SELECT add_compression_policy('monitoring_checks', INTERVAL '1 day');
|
||||
```
|
||||
|
||||
## Resources
|
||||
|
||||
- [TimescaleDB Documentation](https://docs.timescale.com/)
|
||||
- [TimescaleDB Best Practices](https://docs.timescale.com/use-timescale/latest/schema-management/about-schemas/)
|
||||
- [Continuous Aggregates Guide](https://docs.timescale.com/use-timescale/latest/continuous-aggregates/)
|
||||
- [Compression Guide](https://docs.timescale.com/use-timescale/latest/compression/)
|
||||
|
|
@ -1,313 +0,0 @@
|
|||
# WebSocket Migration - Agent Communication
|
||||
|
||||
## Status: ✅ Complete (Phoenix side)
|
||||
|
||||
This document summarizes the migration from REST API to WebSocket-based agent communication.
|
||||
|
||||
## What Was Built
|
||||
|
||||
### Phoenix (Server) Side
|
||||
|
||||
#### 1. WebSocket Infrastructure
|
||||
- **`ToweropsWeb.AgentSocket`** (`lib/towerops_web/channels/agent_socket.ex`)
|
||||
- WebSocket connection handler
|
||||
- Token-based authentication at connection time
|
||||
- Assigns agent_token_id and organization_id to socket
|
||||
|
||||
- **`ToweropsWeb.AgentChannel`** (`lib/towerops_web/channels/agent_channel.ex`)
|
||||
- Channel for bidirectional communication
|
||||
- Handles 4 message types:
|
||||
- `jobs` (server → agent): Job list with SNMP queries
|
||||
- `result` (agent → server): Raw SNMP results
|
||||
- `heartbeat` (agent → server): Agent status
|
||||
- `error` (agent → server): Job failures
|
||||
- Generates DISCOVER and POLL jobs based on equipment state
|
||||
- Processes polling results (sensor readings, interface stats)
|
||||
- Triggers full discovery when agent reports success
|
||||
|
||||
#### 2. Protocol Buffers Messages
|
||||
- Extended `priv/proto/agent.proto` with new message types:
|
||||
- `AgentJob`, `AgentJobList` - Job definitions
|
||||
- `SnmpDevice`, `SnmpQuery` - SNMP connection details
|
||||
- `SnmpResult` - Raw OID→value results
|
||||
- `AgentHeartbeat` - Agent metadata
|
||||
- `AgentError` - Error reporting
|
||||
- `JobType` enum (DISCOVER, POLL)
|
||||
- `QueryType` enum (GET, WALK)
|
||||
|
||||
- Generated Elixir modules (`lib/towerops/proto/agent.pb.ex`)
|
||||
|
||||
#### 3. Endpoint Configuration
|
||||
- Removed REST endpoints:
|
||||
- ❌ `GET /api/v1/agent/config`
|
||||
- ❌ `POST /api/v1/agent/metrics`
|
||||
- ❌ `POST /api/v1/agent/heartbeat`
|
||||
- ❌ `AgentController` (entire file deleted)
|
||||
- ❌ `:agent_api` pipeline
|
||||
|
||||
- Added WebSocket endpoint:
|
||||
- ✅ `wss://towerops.net/socket/agent?token=<token>`
|
||||
|
||||
#### 4. Discovery Module Updates
|
||||
- Made `select_profile/1` public for channel use
|
||||
- Kept existing SNMP discovery logic intact
|
||||
- Channel triggers full discovery when agent reports reachability
|
||||
|
||||
### Rust (Agent) Side
|
||||
|
||||
#### 1. WebSocket Client Skeleton
|
||||
- **`websocket_client.rs`** - Complete structure with:
|
||||
- `AgentClient::connect()` - Establish WebSocket connection
|
||||
- `AgentClient::run()` - Main event loop
|
||||
- Message handling for Phoenix channel format
|
||||
- Job execution framework
|
||||
- Result/heartbeat/error sending
|
||||
- TODO: Raw SNMP GET/WALK implementations
|
||||
|
||||
#### 2. Dependencies Added
|
||||
- `tokio-tungstenite` - WebSocket client
|
||||
- `futures` - Async stream handling
|
||||
- `base64` - For Phoenix channel binary encoding
|
||||
- `hostname` - System information
|
||||
- `anyhow`, `thiserror` - Error handling
|
||||
|
||||
## Architecture Overview
|
||||
|
||||
```
|
||||
┌─────────────┐ ┌──────────────┐
|
||||
│ Agent │←──── WebSocket ───→│ Phoenix │
|
||||
│ (Rust) │ (persistent) │ (Elixir) │
|
||||
└─────────────┘ └──────────────┘
|
||||
│ │
|
||||
│ 1. Connect with token │
|
||||
│──────────────────────────────────→│
|
||||
│ │
|
||||
│ 2. "jobs" message (protobuf) │
|
||||
│←──────────────────────────────────│
|
||||
│ │
|
||||
│ 3. Execute SNMP GET/WALK │
|
||||
│ (raw UDP packets) │
|
||||
│ │
|
||||
│ 4. "result" message (OID→value) │
|
||||
│──────────────────────────────────→│
|
||||
│ │
|
||||
│ 5. Parse with profiles,
|
||||
│ save to database
|
||||
│ │
|
||||
│ 6. "heartbeat" every 60s │
|
||||
│──────────────────────────────────→│
|
||||
└───────────────────────────────────┘
|
||||
```
|
||||
|
||||
## Message Flow
|
||||
|
||||
### Discovery Job
|
||||
```protobuf
|
||||
Server → Agent:
|
||||
{
|
||||
event: "jobs",
|
||||
payload: AgentJobList {
|
||||
jobs: [{
|
||||
job_id: "discover:abc123",
|
||||
job_type: DISCOVER,
|
||||
equipment_id: "abc123",
|
||||
device: {
|
||||
ip: "10.250.1.26",
|
||||
community: "public",
|
||||
version: "1",
|
||||
port: 161
|
||||
},
|
||||
queries: [
|
||||
{query_type: GET, oids: ["1.3.6.1.2.1.1.1.0", ...]},
|
||||
{query_type: WALK, oids: ["1.3.6.1.2.1.2.2.1"]},
|
||||
{query_type: WALK, oids: ["1.3.6.1.4.1.41112"]}
|
||||
]
|
||||
}]
|
||||
}
|
||||
}
|
||||
|
||||
Agent → Server:
|
||||
{
|
||||
event: "result",
|
||||
payload: SnmpResult {
|
||||
equipment_id: "abc123",
|
||||
job_type: DISCOVER,
|
||||
oid_values: {
|
||||
"1.3.6.1.2.1.1.1.0": "Linux AF11 2.6.33 ...",
|
||||
"1.3.6.1.2.1.1.2.0": "1.3.6.1.4.1.41112",
|
||||
"1.3.6.1.2.1.2.2.1.2.3": "eth0",
|
||||
...
|
||||
},
|
||||
timestamp: 1705363200
|
||||
}
|
||||
}
|
||||
|
||||
Server: Triggers full SNMP discovery using existing logic
|
||||
```
|
||||
|
||||
### Polling Job
|
||||
```protobuf
|
||||
Server → Agent:
|
||||
{
|
||||
event: "jobs",
|
||||
payload: AgentJobList {
|
||||
jobs: [{
|
||||
job_id: "poll:abc123",
|
||||
job_type: POLL,
|
||||
equipment_id: "abc123",
|
||||
queries: [
|
||||
{query_type: GET, oids: [
|
||||
"1.3.6.1.4.1.41112.1.3.2.1.3.1", // Sensor 1
|
||||
"1.3.6.1.2.1.2.2.1.10.3", // Interface stats
|
||||
...
|
||||
]}
|
||||
]
|
||||
}]
|
||||
}
|
||||
}
|
||||
|
||||
Agent → Server:
|
||||
{
|
||||
event: "result",
|
||||
payload: SnmpResult {
|
||||
equipment_id: "abc123",
|
||||
job_type: POLL,
|
||||
oid_values: {
|
||||
"1.3.6.1.4.1.41112.1.3.2.1.3.1": "5725",
|
||||
"1.3.6.1.2.1.2.2.1.10.3": "1234567",
|
||||
...
|
||||
},
|
||||
timestamp: 1705363200
|
||||
}
|
||||
}
|
||||
|
||||
Server: Parses values, saves sensor readings and interface stats
|
||||
```
|
||||
|
||||
## Benefits
|
||||
|
||||
### Efficiency
|
||||
- **68% smaller payloads** (Protobuf vs JSON)
|
||||
- **No HTTP overhead** (persistent connection)
|
||||
- **0 latency** for server-push jobs
|
||||
- **Implicit heartbeat** (connection alive = agent alive)
|
||||
|
||||
### Simplicity
|
||||
- **Single URL** instead of 3 REST endpoints
|
||||
- **Server controls polling** (no agent-side profiles)
|
||||
- **Instant job updates** (no 5-minute config poll)
|
||||
|
||||
### Agent Complexity Reduction
|
||||
| Before | After |
|
||||
|--------|-------|
|
||||
| 5000+ lines | ~500 lines |
|
||||
| Device profiles in Rust | Just SNMP UDP client |
|
||||
| MIB parsing | Server-side only |
|
||||
| Discovery logic | Server-side only |
|
||||
| Profile updates require redeploy | Server-side updates |
|
||||
|
||||
## What's Left
|
||||
|
||||
### Rust Agent Implementation
|
||||
1. Implement raw SNMP GET/WALK over UDP
|
||||
- BER encoding for SNMP PDUs
|
||||
- UDP socket communication
|
||||
- Response parsing
|
||||
- Timeout handling
|
||||
|
||||
2. Integrate `websocket_client.rs` with existing agent
|
||||
- Replace REST polling loop
|
||||
- Connect WebSocket client
|
||||
- Handle job execution
|
||||
|
||||
3. Test end-to-end
|
||||
- Connect to Phoenix dev server
|
||||
- Receive jobs
|
||||
- Execute SNMP queries
|
||||
- Send results back
|
||||
|
||||
## Testing
|
||||
|
||||
### Test WebSocket Connection
|
||||
|
||||
```bash
|
||||
# Using websocat
|
||||
brew install websocat
|
||||
websocat "ws://localhost:4000/socket/agent?token=YOUR_TOKEN"
|
||||
|
||||
# Server will immediately send jobs message
|
||||
```
|
||||
|
||||
### Test Job Execution
|
||||
|
||||
```elixir
|
||||
# In Phoenix console (iex -S mix phx.server)
|
||||
equipment = Towerops.Equipment.get_equipment!("equipment-id")
|
||||
agent_token = Towerops.Agents.get_agent_token!("token-id")
|
||||
|
||||
# Broadcast new job to agent
|
||||
Phoenix.PubSub.broadcast(
|
||||
Towerops.PubSub,
|
||||
"agent:#{agent_token.id}",
|
||||
:send_jobs
|
||||
)
|
||||
```
|
||||
|
||||
## Documentation
|
||||
|
||||
- **Protocol spec**: `AGENT_PROTOCOL.md`
|
||||
- **This migration doc**: `WEBSOCKET_MIGRATION.md`
|
||||
- **Rust implementation**: `towerops-agent/src/websocket_client.rs`
|
||||
- **Phoenix channel**: `lib/towerops_web/channels/agent_channel.ex`
|
||||
|
||||
## Migration Path
|
||||
|
||||
For backwards compatibility during rollout:
|
||||
|
||||
1. Deploy Phoenix with WebSocket support
|
||||
2. Old agents continue using REST API (keep endpoints temporarily)
|
||||
3. Deploy new WebSocket-based agents
|
||||
4. Monitor both systems in parallel
|
||||
5. Once all agents migrated, remove REST endpoints
|
||||
|
||||
Currently: **REST endpoints already removed** (clean migration)
|
||||
|
||||
## Performance Expectations
|
||||
|
||||
| Metric | REST API | WebSocket | Improvement |
|
||||
|--------|----------|-----------|-------------|
|
||||
| Connection overhead | 500 bytes/request | 50 bytes/frame | 10x |
|
||||
| Payload size | ~2.5 KB | ~800 bytes | 3x |
|
||||
| Latency (new job) | 5 minutes | <1 second | 300x |
|
||||
| Server load | High (HTTP) | Low (persistent) | 5x |
|
||||
|
||||
## Security
|
||||
|
||||
- ✅ TLS/SSL required in production (`wss://`)
|
||||
- ✅ Token authentication at connection time
|
||||
- ✅ Organization-scoped access (socket assigns)
|
||||
- ✅ No per-message authentication needed
|
||||
- ✅ Connection closed on invalid token
|
||||
|
||||
## Monitoring
|
||||
|
||||
Watch for:
|
||||
- WebSocket connection count: `Phoenix.PubSub.subscribers(Towerops.PubSub, "agent:*")`
|
||||
- Agent last_seen_at timestamps
|
||||
- Job execution errors in logs
|
||||
- SNMP timeout rates
|
||||
|
||||
## Rollback Plan
|
||||
|
||||
If issues arise:
|
||||
1. Revert Phoenix deploy (restore REST endpoints)
|
||||
2. Old agent continues working
|
||||
3. Fix issues
|
||||
4. Redeploy
|
||||
|
||||
Currently: **No rollback needed** (forward-only migration)
|
||||
|
||||
---
|
||||
|
||||
**Completed**: January 16, 2026
|
||||
**Status**: Phoenix complete, Rust implementation in progress
|
||||
|
|
@ -1,10 +1,8 @@
|
|||
defmodule SnmpKit.SnmpLib.SNMPv3EdgeCasesTest do
|
||||
use ExUnit.Case, async: false
|
||||
|
||||
alias SnmpKit.SnmpLib.PDU.Constants
|
||||
alias SnmpKit.SnmpLib.PDU.V3Encoder
|
||||
alias SnmpKit.SnmpLib.Security.Auth
|
||||
alias SnmpKit.SnmpLib.Security.Keys
|
||||
alias SnmpKit.SnmpLib.Security.Priv
|
||||
|
||||
@moduletag :snmpv3
|
||||
|
|
@ -484,7 +482,7 @@ defmodule SnmpKit.SnmpLib.SNMPv3EdgeCasesTest do
|
|||
|
||||
msg = create_test_v3_message_with_pdu(77_777, pdu, user)
|
||||
assert {:ok, encoded} = V3Encoder.encode_message(msg, user)
|
||||
assert {:ok, decoded} = V3Encoder.decode_message(encoded, user)
|
||||
assert {:ok, _decoded} = V3Encoder.decode_message(encoded, user)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
|
|
|||
|
|
@ -3,7 +3,6 @@ defmodule SnmpKit.SnmpLib.SNMPv3IntegrationTest do
|
|||
|
||||
alias SnmpKit.SnmpLib.PDU.V3Encoder
|
||||
alias SnmpKit.SnmpLib.Security
|
||||
alias SnmpKit.SnmpLib.Security.Auth
|
||||
alias SnmpKit.SnmpLib.Security.Keys
|
||||
alias SnmpKit.SnmpLib.Security.Priv
|
||||
alias SnmpKit.SnmpLib.Security.USM
|
||||
|
|
@ -17,7 +16,7 @@ defmodule SnmpKit.SnmpLib.SNMPv3IntegrationTest do
|
|||
test "complete discovery and authentication flow" do
|
||||
# Step 1: Engine Discovery
|
||||
discovery_msg = V3Encoder.create_discovery_message(1001)
|
||||
assert {:ok, discovery_packet} = V3Encoder.encode_message(discovery_msg, nil)
|
||||
assert {:ok, _discovery_packet} = V3Encoder.encode_message(discovery_msg, nil)
|
||||
|
||||
# Simulate response with engine ID
|
||||
mock_response = create_mock_discovery_response(discovery_msg.msg_id, "remote_engine_123")
|
||||
|
|
@ -283,7 +282,7 @@ defmodule SnmpKit.SnmpLib.SNMPv3IntegrationTest do
|
|||
request = create_v3_message(pdu.request_id, pdu, user, level)
|
||||
|
||||
assert {:ok, packet} = V3Encoder.encode_message(request, user)
|
||||
assert {:ok, decoded} = V3Encoder.decode_message(packet, user)
|
||||
assert {:ok, _decoded} = V3Encoder.decode_message(packet, user)
|
||||
|
||||
# Each user should only be able to decode their own messages
|
||||
# Exception: no-auth messages can be decoded by anyone
|
||||
|
|
@ -313,7 +312,7 @@ defmodule SnmpKit.SnmpLib.SNMPv3IntegrationTest do
|
|||
discovered_engines =
|
||||
for {engine_id, index} <- Enum.with_index(engines, 1) do
|
||||
discovery_msg = V3Encoder.create_discovery_message(12_000 + index)
|
||||
{:ok, discovery_packet} = V3Encoder.encode_message(discovery_msg, nil)
|
||||
{:ok, _discovery_packet} = V3Encoder.encode_message(discovery_msg, nil)
|
||||
|
||||
# Simulate response
|
||||
mock_response = create_mock_discovery_response(discovery_msg.msg_id, engine_id)
|
||||
|
|
|
|||
|
|
@ -3,7 +3,6 @@ defmodule SnmpKit.SnmpLib.PDU.V3EncoderTest do
|
|||
|
||||
alias SnmpKit.SnmpLib.PDU.Constants
|
||||
alias SnmpKit.SnmpLib.PDU.V3Encoder
|
||||
alias SnmpKit.SnmpLib.Security
|
||||
|
||||
@moduletag :snmpv3
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue