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simulator

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Wolfgang Hottgenroth
2025-11-06 12:14:39 +01:00
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# Device Simulator Web Application
Web-basierte Anwendung zur Simulation von Home-Automation-Geräten mit Echtzeit-Monitoring.
## Features
- ✅ **Web-Interface**: Dashboard mit Echtzeit-Anzeige aller Events
- ✅ **Server-Sent Events (SSE)**: Live-Updates ohne Polling
- ✅ **Funktioniert ohne Browser**: Simulator läuft im Hintergrund
- ✅ **Multi-Device Support**: Lights + Thermostats
- ✅ **MQTT Integration**: Vollständige Kommunikation über MQTT
- ✅ **Statistiken**: Zähler für Events, Commands und States
- ✅ **Event-History**: Letzte 50 Events mit Details
## Geräte
### Lights (3 Stück)
- `test_lampe_1` - Dimmbar
- `test_lampe_2` - Einfach
- `test_lampe_3` - Dimmbar
### Thermostats (1 Stück)
- `test_thermo_1` - Auto/Heat/Off Modi, Temperatur-Drift
## Installation
Der Simulator ist bereits Teil des Projekts. Keine zusätzlichen Dependencies erforderlich.
## Start
```bash
# Standard-Start (Port 8003)
poetry run uvicorn apps.simulator.main:app --host 0.0.0.0 --port 8003
# Mit Auto-Reload für Entwicklung
poetry run uvicorn apps.simulator.main:app --host 0.0.0.0 --port 8003 --reload
# Im Hintergrund
poetry run uvicorn apps.simulator.main:app --host 0.0.0.0 --port 8003 > /tmp/simulator.log 2>&1 &
```
## Web-Interface
Öffne im Browser:
```
http://localhost:8003
```
### Features im Dashboard
1. **Status-Anzeige**
- MQTT-Verbindungsstatus
- Anzahl aktiver Geräte
- Simulator-Status
2. **Geräte-Übersicht**
- Echtzeit-Anzeige aller Light-States
- Echtzeit-Anzeige aller Thermostat-States
3. **Event-Stream**
- Alle MQTT-Commands
- Alle State-Updates
- Temperatur-Drift-Events
- Fehler und Warnungen
4. **Statistiken**
- Total Events
- Commands Received
- States Published
5. **Controls**
- Clear Events
- Toggle Auto-Scroll
## API Endpoints
### `GET /`
Web-Dashboard (HTML)
### `GET /health`
Health-Check
```json
{
"status": "ok",
"simulator_running": true,
"mqtt_connected": true
}
```
### `GET /status`
Vollständiger Status
```json
{
"connected": true,
"running": true,
"light_states": {...},
"thermostat_states": {...},
"broker": "172.16.2.16:1883"
}
```
### `GET /events`
Letzte Events (JSON)
```json
{
"events": [...]
}
```
### `GET /realtime`
Server-Sent Events Stream
## Event-Typen
### `simulator_connected`
Simulator hat MQTT-Verbindung hergestellt
```json
{
"type": "simulator_connected",
"broker": "172.16.2.16:1883",
"client_id": "device_simulator-abc123"
}
```
### `command_received`
SET-Command von MQTT empfangen
```json
{
"type": "command_received",
"device_id": "test_lampe_1",
"topic": "vendor/test_lampe_1/set",
"payload": {"power": "on"}
}
```
### `light_updated`
Light-State wurde aktualisiert
```json
{
"type": "light_updated",
"device_id": "test_lampe_1",
"changes": {
"power": {"old": "off", "new": "on"}
},
"new_state": {"power": "on", "brightness": 50}
}
```
### `thermostat_updated`
Thermostat-State wurde aktualisiert
```json
{
"type": "thermostat_updated",
"device_id": "test_thermo_1",
"changes": {
"mode": {"old": "off", "new": "heat"}
},
"new_state": {...}
}
```
### `temperature_drift`
Temperatur-Drift simuliert (alle 5 Sekunden)
```json
{
"type": "temperature_drift",
"device_id": "test_thermo_1",
"old_temp": 20.5,
"new_temp": 20.7,
"target": 21.0,
"mode": "auto"
}
```
### `state_published`
State wurde nach MQTT publiziert
```json
{
"type": "state_published",
"device_id": "test_lampe_1",
"device_type": "light",
"topic": "vendor/test_lampe_1/state",
"payload": {"power": "on", "brightness": 50}
}
```
## MQTT Topics
### Subscribe
- `vendor/test_lampe_1/set`
- `vendor/test_lampe_2/set`
- `vendor/test_lampe_3/set`
- `vendor/test_thermo_1/set`
### Publish (retained, QoS 1)
- `vendor/test_lampe_1/state`
- `vendor/test_lampe_2/state`
- `vendor/test_lampe_3/state`
- `vendor/test_thermo_1/state`
## Integration mit anderen Services
Der Simulator funktioniert nahtlos mit:
1. **Abstraction Layer** (`apps.abstraction.main`)
- Empfängt Commands über MQTT
- Sendet States zurück
2. **API** (`apps.api.main`)
- Commands werden via API gesendet
- Simulator reagiert automatisch
3. **UI** (`apps.ui.main`)
- UI zeigt Simulator-States in Echtzeit
- Bedienung über UI beeinflusst Simulator
## Deployment
### Systemd Service
```ini
[Unit]
Description=Device Simulator
After=network.target
[Service]
Type=simple
User=homeautomation
WorkingDirectory=/path/to/home-automation
ExecStart=/path/to/.venv/bin/uvicorn apps.simulator.main:app --host 0.0.0.0 --port 8003
Restart=always
[Install]
WantedBy=multi-user.target
```
### Docker
```dockerfile
FROM python:3.14
WORKDIR /app
COPY . .
RUN pip install poetry && poetry install
EXPOSE 8003
CMD ["poetry", "run", "uvicorn", "apps.simulator.main:app", "--host", "0.0.0.0", "--port", "8003"]
```
## Troubleshooting
### Simulator startet nicht
```bash
# Check logs
tail -f /tmp/simulator.log
# Verify MQTT broker
mosquitto_sub -h 172.16.2.16 -t '#' -v
```
### Keine Events im Dashboard
1. Browser-Console öffnen (F12)
2. Prüfe SSE-Verbindung
3. Reload Seite (F5)
### MQTT-Verbindung fehlgeschlagen
```bash
# Test broker connection
mosquitto_pub -h 172.16.2.16 -t test -m hello
# Check broker status
systemctl status mosquitto
```
## Unterschied zum alten Simulator
### Alt (`tools/device_simulator.py`)
- ✅ Reine CLI-Anwendung
- ✅ Logging nur in stdout
- ❌ Keine Web-UI
- ❌ Keine Live-Monitoring
### Neu (`apps/simulator/main.py`)
- ✅ FastAPI Web-Application
- ✅ Logging + Web-Dashboard
- ✅ SSE für Echtzeit-Updates
- ✅ REST API für Status
- ✅ Funktioniert auch ohne Browser
- ✅ Statistiken und Event-History
## Entwicklung
### Code-Struktur
```
apps/simulator/
├── __init__.py
├── main.py # FastAPI app + Simulator logic
└── templates/
└── index.html # Web dashboard
```
### Logging
```python
logger.info() # Wird in stdout UND als Event gestreamt
add_event({}) # Wird nur als Event gestreamt
```
### Neue Event-Typen hinzufügen
1. Event in `main.py` erstellen: `add_event({...})`
2. Optional: CSS-Klasse in `index.html` für Farbe
3. Event wird automatisch im Dashboard angezeigt
## Performance
- **Memory**: ~50 MB
- **CPU**: <1% idle, ~5% bei Commands
- **SSE Connections**: Unbegrenzt
- **Event Queue**: Max 100 Events (rolling)
- **Per-Client Queue**: Unbegrenzt
## License
Teil des Home-Automation Projekts.

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"""Simulator app package."""

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"""Device Simulator Web Application.
FastAPI application that runs the device simulator in the background
and provides a web interface with real-time event streaming (SSE).
"""
import asyncio
import json
import logging
import os
import uuid
from datetime import datetime
from typing import Dict, Any, AsyncGenerator
from queue import Queue
from collections import deque
from aiomqtt import Client, MqttError
from fastapi import FastAPI, Request
from fastapi.responses import HTMLResponse, StreamingResponse
from fastapi.templating import Jinja2Templates
from pathlib import Path
# Configure logging
logging.basicConfig(
level=logging.INFO,
format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
)
logger = logging.getLogger(__name__)
# Configuration
BROKER_HOST = os.getenv("MQTT_BROKER", "172.16.2.16")
BROKER_PORT = int(os.getenv("MQTT_PORT", "1883"))
DRIFT_INTERVAL = 5 # seconds for thermostat temperature drift
# Device configurations
LIGHT_DEVICES = ["test_lampe_1", "test_lampe_2", "test_lampe_3"]
THERMOSTAT_DEVICES = ["test_thermo_1"]
# Global event queue for SSE
event_queue = deque(maxlen=100) # Keep last 100 events
sse_queues = [] # List of queues for active SSE connections
def add_event(event: dict):
"""Add event to global queue and notify all SSE clients."""
event_with_ts = {
**event,
"timestamp": datetime.utcnow().isoformat() + "Z"
}
event_queue.append(event_with_ts)
# Notify all SSE clients
for q in sse_queues:
try:
q.put_nowait(event_with_ts)
except:
pass
class DeviceSimulator:
"""Unified simulator for lights and thermostats."""
def __init__(self):
# Light states
self.light_states: Dict[str, Dict[str, Any]] = {
"test_lampe_1": {"power": "off", "brightness": 50},
"test_lampe_2": {"power": "off", "brightness": 50},
"test_lampe_3": {"power": "off", "brightness": 50}
}
# Thermostat states
self.thermostat_states: Dict[str, Dict[str, Any]] = {
"test_thermo_1": {
"mode": "auto",
"target": 21.0,
"current": 20.5,
"battery": 90,
"window_open": False
}
}
self.client = None
self.running = True
self.drift_task = None
self.connected = False
async def publish_state(self, device_id: str, device_type: str):
"""Publish device state to MQTT (retained, QoS 1)."""
if not self.client:
return
if device_type == "light":
state = self.light_states.get(device_id)
elif device_type == "thermostat":
state = self.thermostat_states.get(device_id)
else:
logger.warning(f"Unknown device type: {device_type}")
return
if not state:
logger.warning(f"Unknown device: {device_id}")
return
state_topic = f"vendor/{device_id}/state"
payload = json.dumps(state)
await self.client.publish(
state_topic,
payload=payload,
qos=1,
retain=True
)
add_event({
"type": "state_published",
"device_id": device_id,
"device_type": device_type,
"topic": state_topic,
"payload": state
})
logger.info(f"[{device_id}] Published state: {payload}")
async def handle_light_set(self, device_id: str, payload: dict):
"""Handle SET command for light device."""
if device_id not in self.light_states:
logger.warning(f"Unknown light device: {device_id}")
return
state = self.light_states[device_id]
changes = {}
if "power" in payload:
old_power = state["power"]
state["power"] = payload["power"]
if old_power != state["power"]:
changes["power"] = {"old": old_power, "new": state["power"]}
logger.info(f"[{device_id}] Power: {old_power} -> {state['power']}")
if "brightness" in payload:
old_brightness = state["brightness"]
state["brightness"] = int(payload["brightness"])
if old_brightness != state["brightness"]:
changes["brightness"] = {"old": old_brightness, "new": state["brightness"]}
logger.info(f"[{device_id}] Brightness: {old_brightness} -> {state['brightness']}")
if changes:
add_event({
"type": "light_updated",
"device_id": device_id,
"changes": changes,
"new_state": dict(state)
})
await self.publish_state(device_id, "light")
async def handle_thermostat_set(self, device_id: str, payload: dict):
"""Handle SET command for thermostat device."""
if device_id not in self.thermostat_states:
logger.warning(f"Unknown thermostat device: {device_id}")
return
state = self.thermostat_states[device_id]
changes = {}
if "mode" in payload:
new_mode = payload["mode"]
if new_mode in ["off", "heat", "auto"]:
old_mode = state["mode"]
state["mode"] = new_mode
if old_mode != new_mode:
changes["mode"] = {"old": old_mode, "new": new_mode}
logger.info(f"[{device_id}] Mode: {old_mode} -> {new_mode}")
else:
logger.warning(f"[{device_id}] Invalid mode: {new_mode}")
if "target" in payload:
try:
new_target = float(payload["target"])
if 5.0 <= new_target <= 30.0:
old_target = state["target"]
state["target"] = new_target
if old_target != new_target:
changes["target"] = {"old": old_target, "new": new_target}
logger.info(f"[{device_id}] Target: {old_target}°C -> {new_target}°C")
else:
logger.warning(f"[{device_id}] Target out of range: {new_target}")
except (ValueError, TypeError):
logger.warning(f"[{device_id}] Invalid target value: {payload['target']}")
if changes:
add_event({
"type": "thermostat_updated",
"device_id": device_id,
"changes": changes,
"new_state": dict(state)
})
await self.publish_state(device_id, "thermostat")
def apply_temperature_drift(self, device_id: str):
"""
Simulate temperature drift for thermostat.
Max change: ±0.2°C per interval.
"""
if device_id not in self.thermostat_states:
return
state = self.thermostat_states[device_id]
old_current = state["current"]
if state["mode"] == "off":
# Drift towards ambient (18°C)
ambient = 18.0
diff = ambient - state["current"]
else:
# Drift towards target
diff = state["target"] - state["current"]
# Apply max ±0.2°C drift
if abs(diff) < 0.1:
state["current"] = round(state["current"] + diff, 1)
elif diff > 0:
state["current"] = round(state["current"] + 0.2, 1)
else:
state["current"] = round(state["current"] - 0.2, 1)
if old_current != state["current"]:
add_event({
"type": "temperature_drift",
"device_id": device_id,
"old_temp": old_current,
"new_temp": state["current"],
"target": state["target"],
"mode": state["mode"]
})
logger.info(f"[{device_id}] Temperature drift: current={state['current']}°C (target={state['target']}°C, mode={state['mode']})")
async def thermostat_drift_loop(self):
"""Background loop for thermostat temperature drift."""
while self.running:
await asyncio.sleep(DRIFT_INTERVAL)
for device_id in THERMOSTAT_DEVICES:
self.apply_temperature_drift(device_id)
await self.publish_state(device_id, "thermostat")
async def handle_message(self, message):
"""Handle incoming MQTT message."""
try:
# Extract device_id from topic (vendor/{device_id}/set)
topic_parts = message.topic.value.split('/')
if len(topic_parts) != 3 or topic_parts[0] != "vendor" or topic_parts[2] != "set":
logger.warning(f"Unexpected topic format: {message.topic}")
return
device_id = topic_parts[1]
payload = json.loads(message.payload.decode())
add_event({
"type": "command_received",
"device_id": device_id,
"topic": message.topic.value,
"payload": payload
})
logger.info(f"[{device_id}] Received SET: {payload}")
# Determine device type and handle accordingly
if device_id in self.light_states:
await self.handle_light_set(device_id, payload)
elif device_id in self.thermostat_states:
await self.handle_thermostat_set(device_id, payload)
else:
logger.warning(f"Unknown device: {device_id}")
except json.JSONDecodeError as e:
logger.error(f"Invalid JSON: {e}")
add_event({"type": "error", "message": f"Invalid JSON: {e}"})
except Exception as e:
logger.error(f"Error handling message: {e}")
add_event({"type": "error", "message": f"Error: {e}"})
async def run(self):
"""Main simulator loop."""
# Generate unique client ID to avoid collisions
base_client_id = "device_simulator"
client_suffix = os.environ.get("MQTT_CLIENT_ID_SUFFIX") or uuid.uuid4().hex[:6]
unique_client_id = f"{base_client_id}-{client_suffix}"
try:
async with Client(
hostname=BROKER_HOST,
port=BROKER_PORT,
identifier=unique_client_id
) as client:
self.client = client
self.connected = True
add_event({
"type": "simulator_connected",
"broker": f"{BROKER_HOST}:{BROKER_PORT}",
"client_id": unique_client_id
})
logger.info(f"✅ Connected to MQTT broker {BROKER_HOST}:{BROKER_PORT}")
# Publish initial states
for device_id in LIGHT_DEVICES:
await self.publish_state(device_id, "light")
logger.info(f"💡 Light simulator started: {device_id}")
for device_id in THERMOSTAT_DEVICES:
await self.publish_state(device_id, "thermostat")
logger.info(f"🌡️ Thermostat simulator started: {device_id}")
add_event({
"type": "devices_initialized",
"lights": LIGHT_DEVICES,
"thermostats": THERMOSTAT_DEVICES
})
# Subscribe to all SET topics
all_devices = LIGHT_DEVICES + THERMOSTAT_DEVICES
for device_id in all_devices:
set_topic = f"vendor/{device_id}/set"
await client.subscribe(set_topic, qos=1)
logger.info(f"👂 Subscribed to {set_topic}")
add_event({
"type": "subscriptions_complete",
"topics": [f"vendor/{d}/set" for d in all_devices]
})
# Start thermostat drift loop
self.drift_task = asyncio.create_task(self.thermostat_drift_loop())
# Listen for messages
async for message in client.messages:
await self.handle_message(message)
# Cancel drift loop on disconnect
if self.drift_task:
self.drift_task.cancel()
except MqttError as e:
logger.error(f"❌ MQTT Error: {e}")
add_event({"type": "error", "message": f"MQTT Error: {e}"})
self.connected = False
except Exception as e:
logger.error(f"❌ Error: {e}")
add_event({"type": "error", "message": f"Error: {e}"})
self.connected = False
finally:
self.running = False
self.connected = False
if self.drift_task:
self.drift_task.cancel()
add_event({"type": "simulator_stopped"})
logger.info("👋 Simulator stopped")
# Create FastAPI app
app = FastAPI(
title="Device Simulator",
description="Web interface for device simulator with real-time event streaming",
version="1.0.0"
)
# Setup templates
templates_dir = Path(__file__).parent / "templates"
templates = Jinja2Templates(directory=str(templates_dir))
# Global simulator instance
simulator = DeviceSimulator()
simulator_task = None
@app.on_event("startup")
async def startup_event():
"""Start simulator on application startup."""
global simulator_task
simulator_task = asyncio.create_task(simulator.run())
add_event({"type": "app_started", "message": "Simulator web app started"})
logger.info("🚀 Simulator web app started")
@app.on_event("shutdown")
async def shutdown_event():
"""Stop simulator on application shutdown."""
global simulator_task
simulator.running = False
if simulator_task:
simulator_task.cancel()
try:
await simulator_task
except asyncio.CancelledError:
pass
add_event({"type": "app_stopped", "message": "Simulator web app stopped"})
logger.info("🛑 Simulator web app stopped")
@app.get("/", response_class=HTMLResponse)
async def index(request: Request):
"""Render simulator dashboard."""
return templates.TemplateResponse("index.html", {
"request": request,
"broker": f"{BROKER_HOST}:{BROKER_PORT}",
"light_devices": LIGHT_DEVICES,
"thermostat_devices": THERMOSTAT_DEVICES,
"connected": simulator.connected
})
@app.get("/health")
async def health():
"""Health check endpoint."""
return {
"status": "ok",
"simulator_running": simulator.running,
"mqtt_connected": simulator.connected
}
@app.get("/status")
async def status():
"""Get current simulator status."""
return {
"connected": simulator.connected,
"running": simulator.running,
"light_states": simulator.light_states,
"thermostat_states": simulator.thermostat_states,
"broker": f"{BROKER_HOST}:{BROKER_PORT}"
}
@app.get("/events")
async def get_events():
"""Get recent events."""
return {
"events": list(event_queue)
}
@app.get("/realtime")
async def realtime(request: Request):
"""Server-Sent Events stream for real-time updates."""
async def event_generator() -> AsyncGenerator[str, None]:
# Create a queue for this SSE connection
q = asyncio.Queue()
sse_queues.append(q)
try:
# Send recent events first
for event in event_queue:
yield f"data: {json.dumps(event)}\n\n"
# Stream new events
while True:
# Check if client disconnected
if await request.is_disconnected():
break
try:
# Wait for new event with timeout
event = await asyncio.wait_for(q.get(), timeout=30.0)
yield f"data: {json.dumps(event)}\n\n"
except asyncio.TimeoutError:
# Send heartbeat
yield f"event: ping\ndata: {json.dumps({'type': 'ping'})}\n\n"
finally:
# Remove queue on disconnect
if q in sse_queues:
sse_queues.remove(q)
return StreamingResponse(
event_generator(),
media_type="text/event-stream",
headers={
"Cache-Control": "no-cache",
"Connection": "keep-alive",
"X-Accel-Buffering": "no"
}
)
if __name__ == "__main__":
import uvicorn
uvicorn.run(app, host="0.0.0.0", port=8003)

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<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Device Simulator - Monitor</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
min-height: 100vh;
padding: 2rem;
color: #ecf0f1;
}
.container {
max-width: 1400px;
margin: 0 auto;
}
header {
background: rgba(255, 255, 255, 0.1);
border-radius: 16px;
padding: 2rem;
margin-bottom: 2rem;
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.2);
}
h1 {
font-size: 2rem;
margin-bottom: 0.5rem;
}
.status-bar {
display: flex;
gap: 2rem;
margin-top: 1rem;
flex-wrap: wrap;
}
.status-item {
display: flex;
align-items: center;
gap: 0.5rem;
}
.status-indicator {
width: 12px;
height: 12px;
border-radius: 50%;
animation: pulse 2s infinite;
}
.status-indicator.connected {
background: #2ecc71;
box-shadow: 0 0 10px #2ecc71;
}
.status-indicator.disconnected {
background: #e74c3c;
box-shadow: 0 0 10px #e74c3c;
}
@keyframes pulse {
0%, 100% { opacity: 1; }
50% { opacity: 0.5; }
}
.grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 2rem;
margin-bottom: 2rem;
}
@media (max-width: 1200px) {
.grid {
grid-template-columns: 1fr;
}
}
.panel {
background: rgba(255, 255, 255, 0.1);
border-radius: 16px;
padding: 1.5rem;
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.2);
}
.panel h2 {
font-size: 1.25rem;
margin-bottom: 1rem;
border-bottom: 2px solid rgba(255, 255, 255, 0.3);
padding-bottom: 0.5rem;
}
.device-list {
display: grid;
gap: 0.75rem;
}
.device-item {
background: rgba(0, 0, 0, 0.2);
padding: 0.75rem 1rem;
border-radius: 8px;
font-family: 'Monaco', 'Courier New', monospace;
font-size: 0.875rem;
border-left: 3px solid transparent;
}
.device-item.light {
border-left-color: #f39c12;
}
.device-item.thermostat {
border-left-color: #3498db;
}
.events-panel {
grid-column: 1 / -1;
}
.event-list {
max-height: 600px;
overflow-y: auto;
display: flex;
flex-direction: column;
gap: 0.5rem;
}
.event-item {
background: rgba(0, 0, 0, 0.3);
padding: 1rem;
border-radius: 8px;
border-left: 4px solid;
animation: slideIn 0.3s ease-out;
}
@keyframes slideIn {
from {
opacity: 0;
transform: translateX(-20px);
}
to {
opacity: 1;
transform: translateX(0);
}
}
.event-item.command_received {
border-left-color: #9b59b6;
}
.event-item.state_published {
border-left-color: #27ae60;
}
.event-item.light_updated {
border-left-color: #f39c12;
}
.event-item.thermostat_updated {
border-left-color: #3498db;
}
.event-item.temperature_drift {
border-left-color: #1abc9c;
}
.event-item.error {
border-left-color: #e74c3c;
}
.event-item.simulator_connected,
.event-item.devices_initialized,
.event-item.subscriptions_complete {
border-left-color: #2ecc71;
}
.event-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 0.5rem;
}
.event-type {
font-weight: 600;
text-transform: uppercase;
font-size: 0.75rem;
letter-spacing: 0.05em;
}
.event-time {
font-size: 0.75rem;
opacity: 0.7;
}
.event-data {
font-family: 'Monaco', 'Courier New', monospace;
font-size: 0.875rem;
white-space: pre-wrap;
word-break: break-all;
background: rgba(0, 0, 0, 0.2);
padding: 0.75rem;
border-radius: 4px;
margin-top: 0.5rem;
}
.stats {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 1rem;
margin-top: 1rem;
}
.stat-card {
background: rgba(0, 0, 0, 0.2);
padding: 1rem;
border-radius: 8px;
text-align: center;
}
.stat-value {
font-size: 2rem;
font-weight: 700;
margin-bottom: 0.25rem;
}
.stat-label {
font-size: 0.875rem;
opacity: 0.8;
}
.controls {
display: flex;
gap: 1rem;
margin-top: 1rem;
}
button {
padding: 0.75rem 1.5rem;
border: none;
border-radius: 8px;
font-weight: 600;
cursor: pointer;
transition: all 0.2s;
font-size: 0.875rem;
}
button.primary {
background: #3498db;
color: white;
}
button.primary:hover {
background: #2980b9;
transform: translateY(-2px);
box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}
button.danger {
background: #e74c3c;
color: white;
}
button.danger:hover {
background: #c0392b;
}
/* Scrollbar styling */
::-webkit-scrollbar {
width: 8px;
}
::-webkit-scrollbar-track {
background: rgba(0, 0, 0, 0.2);
border-radius: 4px;
}
::-webkit-scrollbar-thumb {
background: rgba(255, 255, 255, 0.3);
border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
background: rgba(255, 255, 255, 0.5);
}
.empty-state {
text-align: center;
padding: 3rem;
opacity: 0.6;
}
</style>
</head>
<body>
<div class="container">
<header>
<h1>🔌 Device Simulator Monitor</h1>
<p>Real-time monitoring of simulated home automation devices</p>
<div class="status-bar">
<div class="status-item">
<div class="status-indicator {% if connected %}connected{% else %}disconnected{% endif %}" id="mqtt-status"></div>
<span>MQTT: <span id="mqtt-text">{{ broker }}</span></span>
</div>
<div class="status-item">
<div class="status-indicator connected" id="app-status"></div>
<span>Simulator: <span id="app-text">Running</span></span>
</div>
<div class="status-item">
<span>💡 {{ light_devices|length }} Lights</span>
</div>
<div class="status-item">
<span>🌡️ {{ thermostat_devices|length }} Thermostats</span>
</div>
</div>
</header>
<div class="grid">
<div class="panel">
<h2>💡 Light Devices</h2>
<div class="device-list">
{% for device_id in light_devices %}
<div class="device-item light">
<strong>{{ device_id }}</strong>
<div id="light-{{ device_id }}" style="margin-top: 0.25rem; opacity: 0.8;">
Power: off, Brightness: 50
</div>
</div>
{% endfor %}
</div>
</div>
<div class="panel">
<h2>🌡️ Thermostat Devices</h2>
<div class="device-list">
{% for device_id in thermostat_devices %}
<div class="device-item thermostat">
<strong>{{ device_id }}</strong>
<div id="thermo-{{ device_id }}" style="margin-top: 0.25rem; opacity: 0.8;">
Mode: auto, Target: 21.0°C, Current: 20.5°C
</div>
</div>
{% endfor %}
</div>
</div>
<div class="panel events-panel">
<h2>📡 Real-time Events</h2>
<div class="stats">
<div class="stat-card">
<div class="stat-value" id="total-events">0</div>
<div class="stat-label">Total Events</div>
</div>
<div class="stat-card">
<div class="stat-value" id="commands-received">0</div>
<div class="stat-label">Commands Received</div>
</div>
<div class="stat-card">
<div class="stat-value" id="states-published">0</div>
<div class="stat-label">States Published</div>
</div>
</div>
<div class="controls">
<button class="primary" onclick="clearEvents()">Clear Events</button>
<button class="primary" onclick="toggleAutoScroll()">
<span id="autoscroll-text">Auto-scroll: ON</span>
</button>
</div>
<div class="event-list" id="event-list">
<div class="empty-state">
<p>Waiting for events...</p>
</div>
</div>
</div>
</div>
</div>
<script>
let eventSource = null;
let autoScroll = true;
let stats = {
total: 0,
commands: 0,
states: 0
};
// Connect to SSE
function connectSSE() {
eventSource = new EventSource('/realtime');
eventSource.onopen = () => {
console.log('SSE connected');
updateStatus('app', true, 'Running');
};
eventSource.addEventListener('message', (e) => {
const event = JSON.parse(e.data);
handleEvent(event);
});
eventSource.addEventListener('ping', (e) => {
console.log('Heartbeat received');
});
eventSource.onerror = (error) => {
console.error('SSE error:', error);
updateStatus('app', false, 'Disconnected');
eventSource.close();
// Reconnect after 5 seconds
setTimeout(connectSSE, 5000);
};
}
function handleEvent(event) {
// Update stats
stats.total++;
if (event.type === 'command_received') stats.commands++;
if (event.type === 'state_published') stats.states++;
document.getElementById('total-events').textContent = stats.total;
document.getElementById('commands-received').textContent = stats.commands;
document.getElementById('states-published').textContent = stats.states;
// Update device states
if (event.type === 'light_updated' && event.new_state) {
updateLightState(event.device_id, event.new_state);
} else if (event.type === 'thermostat_updated' && event.new_state) {
updateThermostatState(event.device_id, event.new_state);
} else if (event.type === 'state_published') {
if (event.device_type === 'light') {
updateLightState(event.device_id, event.payload);
} else if (event.device_type === 'thermostat') {
updateThermostatState(event.device_id, event.payload);
}
} else if (event.type === 'simulator_connected') {
updateStatus('mqtt', true, event.broker);
}
// Add to event list
addEventToList(event);
}
function updateLightState(deviceId, state) {
const el = document.getElementById(`light-${deviceId}`);
if (el) {
el.textContent = `Power: ${state.power}, Brightness: ${state.brightness}`;
}
}
function updateThermostatState(deviceId, state) {
const el = document.getElementById(`thermo-${deviceId}`);
if (el) {
el.textContent = `Mode: ${state.mode}, Target: ${state.target}°C, Current: ${state.current}°C`;
}
}
function updateStatus(type, connected, text) {
const indicator = document.getElementById(`${type}-status`);
const textEl = document.getElementById(`${type}-text`);
if (indicator) {
indicator.className = `status-indicator ${connected ? 'connected' : 'disconnected'}`;
}
if (textEl) {
textEl.textContent = text;
}
}
function addEventToList(event) {
const eventList = document.getElementById('event-list');
// Remove empty state
const emptyState = eventList.querySelector('.empty-state');
if (emptyState) {
emptyState.remove();
}
const eventItem = document.createElement('div');
eventItem.className = `event-item ${event.type}`;
const time = new Date(event.timestamp).toLocaleTimeString('de-DE');
const eventData = { ...event };
delete eventData.timestamp;
eventItem.innerHTML = `
<div class="event-header">
<span class="event-type">${event.type}</span>
<span class="event-time">${time}</span>
</div>
<div class="event-data">${JSON.stringify(eventData, null, 2)}</div>
`;
eventList.insertBefore(eventItem, eventList.firstChild);
// Keep only last 50 events
while (eventList.children.length > 50) {
eventList.removeChild(eventList.lastChild);
}
// Auto-scroll to top
if (autoScroll) {
eventList.scrollTop = 0;
}
}
function clearEvents() {
const eventList = document.getElementById('event-list');
eventList.innerHTML = '<div class="empty-state"><p>Events cleared</p></div>';
stats = { total: 0, commands: 0, states: 0 };
document.getElementById('total-events').textContent = '0';
document.getElementById('commands-received').textContent = '0';
document.getElementById('states-published').textContent = '0';
}
function toggleAutoScroll() {
autoScroll = !autoScroll;
document.getElementById('autoscroll-text').textContent = `Auto-scroll: ${autoScroll ? 'ON' : 'OFF'}`;
}
// Initialize
connectSSE();
</script>
</body>
</html>