ace-connection-logger

Network connectivity monitoring tool with ping statistics and interactive dashboard.

Features

• Continuous Monitoring: Ping configurable hosts at regular intervals (default: once per minute)
• Detailed Statistics: Track success rates, min/max/average latency for each host
• SQLite Database: Efficiently stores historical ping data with automatic cleanup
• Interactive Dashboard: Modern Vue.js dashboard with real-time visualizations
• REST API: FastAPI backend with comprehensive API documentation
• Outage Tracking: Detailed event log of network outages with duration and recovery metrics
• Flexible Configuration: YAML-based configuration for hosts and settings
• Automatic Cleanup: Removes records older than 90 days (configurable)
• CLI Interface: Easy-to-use command-line interface with multiple commands

Installation

Option 1: Docker (Recommended for Production)

The easiest way to run ACE Connection Logger is with Docker:

# Using Docker Compose
docker-compose up -d

# Access the dashboard at http://localhost:8506

See DOCKER.md for detailed Docker deployment instructions.

Option 2: Local Development

This project uses uv for dependency management. Make sure you have uv installed:

# Install dependencies
uv sync

# Activate the virtual environment
source .venv/bin/activate  # On Unix/macOS
# or
.venv\Scripts\activate  # On Windows

Quick Start

1. Initialize Configuration:

   python main.py init-config
   

   This creates a config.yaml file with default settings.

2. Edit Configuration: Edit config.yaml to add your hosts:

   monitoring:
     interval_seconds: 60  # Check every minute
     ping_count: 5         # 5 pings per check
     timeout_seconds: 2    # 2 second timeout
   
   hosts:
     - name: Google DNS
       address: 8.8.8.8
     - name: Cloudflare DNS
       address: 1.1.1.1
     - name: Local Gateway
       address: 192.168.1.1
   

3. Start Monitoring with API Server:

   python main.py monitor
   

   This automatically:

   • Starts continuous monitoring in the background
   • Launches the FastAPI server
   • API documentation available at http://localhost:8506/docs

4. Access the Dashboard:

   For Development (with hot-reload):

   # In a separate terminal
   cd frontend
   npm install  # First time only
   npm run dev
   

   Then open http://localhost:5173 in your browser.

   For Production (integrated with API):

   # Build the frontend first
   cd frontend && npm run build && cd ..
   
   # Start the monitor (serves built frontend + API)
   python main.py monitor
   

   Then open http://localhost:8506 in your browser.

   Note: The Docker container automatically builds and serves the frontend - no separate commands needed!

CLI Commands

init-config

Create a default configuration file:

python main.py init-config
python main.py init-config --config /path/to/config.yaml

monitor

Start continuous monitoring with integrated API server (recommended):

# Default: Monitoring + API server together
python main.py monitor

# Custom API port
python main.py monitor --api-port 8080

# Monitoring only, no API server
python main.py monitor --no-dashboard

# Custom config
python main.py monitor --config /path/to/config.yaml

Note: By default, monitor now launches both the monitoring engine and the API server in one command. The monitoring runs in the background while the API server runs in the main thread. Start the Vue.js frontend separately with cd frontend && npm run dev. Press Ctrl+C to stop monitoring and API server.

check

Perform a single check of all hosts:

python main.py check
python main.py check --config /path/to/config.yaml

status

Show current status of all monitored hosts:

python main.py status
python main.py status --config /path/to/config.yaml

events

Show outage event log with detailed information:

# Show all outage events
python main.py events

# Show only active (ongoing) outages
python main.py events --active

# Filter by host address
python main.py events --host 8.8.8.8

# Show events from last 7 days
python main.py events --days 7

# Limit number of events displayed
python main.py events --limit 20

# Combine filters
python main.py events --days 7 --limit 10 --host 192.168.1.1

Note: Events are created whenever a host becomes unreachable (success_rate == 0%) and are closed when the host recovers. Each event includes start time, end time, duration, number of failed checks, and recovery success rate.

api

Launch the FastAPI server standalone (without monitoring):

# Standalone API server (no monitoring)
python main.py api
python main.py api --port 8080
python main.py api --host 0.0.0.0 --port 8080

Note: You typically want to use monitor (which includes the API server) instead of running api separately. Use this command only if you want to run monitoring separately or if the monitoring is already running in another process.

cleanup

Run cleanup job once to remove old records:

python main.py cleanup
python main.py cleanup --config /path/to/config.yaml

cleanup-continuous

Run cleanup job continuously (default: every 24 hours):

python main.py cleanup-continuous
python main.py cleanup-continuous --interval 12  # Run every 12 hours

Configuration

The config.yaml file supports the following options:

monitoring:
  interval_seconds: 60      # How often to check hosts (seconds)
  ping_count: 5            # Number of pings per check
  timeout_seconds: 2       # Timeout for each ping

hosts:
  - name: Host Name        # Human-readable name
    address: 8.8.8.8       # IP address or hostname

database:
  path: connection_logs.db # SQLite database file path
  retention_days: 90       # Keep records for this many days

dashboard:
  port: 8501              # Dashboard port
  host: localhost         # Dashboard host

Dashboard Features

The Vue.js dashboard provides:

• Real-time Status Overview: Current status of all monitored hosts with color-coded health indicators
• Active Outages Alert: Highlighted section showing ongoing outages with duration and failed check counts
• Performance Trends: Interactive Chart.js visualizations with dual-axis charts
  • Average, min, and max latency over time
  • Success rate percentage overlay
  • Configurable time ranges (1 hour, 6 hours, 24 hours, 7 days)
  • Host selector for detailed analysis
• Recent Outage Events: Complete event log showing resolved outages with duration and recovery metrics
• Auto-refresh: Automatic data updates every 30 seconds
• Responsive Design: Modern, clean interface that works on desktop and mobile

API Features

The FastAPI backend provides a comprehensive REST API:

• Interactive Documentation: Swagger UI at /docs and ReDoc at /redoc
• 11 API Endpoints: Complete access to all monitoring data
  • /api/status - System status and monitoring configuration
  • /api/ping-results/latest - Latest results for all hosts
  • /api/ping-results - Historical ping results with filtering
  • /api/statistics/{host_address} - Aggregated statistics per host
  • /api/outages - Outage event log with filters
  • /api/outages/active - Currently active outages
  • /api/outages/statistics/{host_address} - Outage statistics per host
  • /api/hosts - List of all monitored hosts
  • /api/hosts/{host_address}/active-outage - Check for active outage
  • /health - Health check endpoint
• CORS Support: Cross-origin requests enabled for frontend integration
• Type-safe: Pydantic models for request/response validation

Database Schema

The SQLite database stores ping results and outage events with the following schemas:

Ping Results Table

CREATE TABLE ping_results (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    host_name TEXT NOT NULL,
    host_address TEXT NOT NULL,
    timestamp DATETIME NOT NULL,
    success_count INTEGER NOT NULL,
    failure_count INTEGER NOT NULL,
    success_rate REAL NOT NULL,
    min_latency REAL,
    max_latency REAL,
    avg_latency REAL,
    UNIQUE(host_address, timestamp)
);

Indexes are created on timestamp, host_address, and (host_address, timestamp) for efficient queries.

Outage Events Table

CREATE TABLE outage_events (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    host_name TEXT NOT NULL,
    host_address TEXT NOT NULL,
    event_type TEXT NOT NULL,
    start_time DATETIME NOT NULL,
    end_time DATETIME,
    duration_seconds INTEGER,
    checks_failed INTEGER NOT NULL DEFAULT 0,
    checks_during_outage INTEGER NOT NULL DEFAULT 0,
    recovery_success_rate REAL,
    notes TEXT
);

Indexes are created on host_address, start_time, end_time, and (host_address, start_time) for efficient event queries. The event_type field is set to 'outage_start' when created and remains until the outage is resolved.

Architecture

The project is organized into modular components:

Backend (Python)

• config.py: Configuration management with YAML support
• database.py: SQLite database layer with efficient queries and outage event tracking
• monitor.py: Ping monitoring logic with cross-platform support and outage detection
• cleanup.py: Automatic cleanup of old records
• api.py: FastAPI REST API with 11 endpoints and Pydantic models
• main.py: CLI interface using Click

Frontend (Vue.js)

• frontend/src/App.vue: Main application component with dashboard layout
• frontend/src/components/HostCard.vue: Host status display with color-coded indicators
• frontend/src/components/OutageCard.vue: Outage event display component
• frontend/src/components/LatencyChart.vue: Chart.js integration for performance visualization
• frontend/src/services/api.js: Axios-based API service layer

Data Flow

1. Monitoring: monitor.py performs periodic pings and stores results in SQLite
2. Event Tracking: Automatic outage event creation and management
3. API Layer: FastAPI serves data through REST endpoints
4. Frontend: Vue.js fetches data and updates dashboard in real-time
5. Cleanup: Automated removal of old records based on retention policy

Production Deployment

For production use, consider:

1. Run as a Service: Use systemd (Linux) or similar to run monitoring and API as background services
2. Separate Processes: Run monitor (with API), cleanup, and frontend as separate services
3. Network Access: Ensure the monitoring process has ICMP (ping) permissions
4. Frontend Deployment: Build Vue.js frontend for production and serve with nginx
5. API Security: Use a reverse proxy (nginx) for the API with HTTPS and rate limiting
6. Monitoring Multiple Instances: Each instance can use its own database or share one

Example systemd service file for monitoring + API

/etc/systemd/system/ace-monitor.service:

[Unit]
Description=ACE Connection Logger Monitor and API
After=network.target

[Service]
Type=simple
User=your-user
WorkingDirectory=/path/to/ace-connection-logger
ExecStart=/path/to/.venv/bin/python main.py monitor
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target

Frontend production build

cd frontend
npm run build

# Serve the dist/ folder with nginx or any static file server

Nginx configuration example

# API proxy
location /api/ {
    proxy_pass http://localhost:8501;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
}

# Serve Vue.js frontend
location / {
    root /path/to/ace-connection-logger/frontend/dist;
    try_files $uri $uri/ /index.html;
}

Error Handling

The application includes comprehensive error handling:

• Failed pings are recorded with 0% success rate
• Database errors are logged and monitoring continues
• Network timeouts are handled gracefully
• Configuration errors fall back to defaults

Development

To contribute or modify:

# Install dev dependencies
uv sync --group dev

# Run linting
ruff check .

# Run formatting
ruff format .

# Run tests
pytest

License

See LICENSE file for details.

Support

For issues, questions, or contributions, please open an issue on the project repository.