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smart-city-digital-twin-mar…/data-flow-diagram.md
Eric FELIXINE c06acf4fe8 feat: distribution service + redpanda consumer + updated flow diagram
- Add Pulsar distribution service (consumes smartcity-* → MQTT + context brokers)
- Add Redpanda → InfluxDB consumer (redpanda/consumer.py)
- Update FIXED_LOCATIONS with exact OpenRemote asset coordinates
- Fix Pulsar topics (underscore: smartcity-traffic not smartcity-traffic)
- Fix prometheus.yml endpoints (Redpanda:9644, comment inactive stacks)
- Add docker-compose.redpanda-consumer.yml
2026-05-05 22:12:38 -04:00

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# Smart City Digital Twin Martinique — Diagramme des Flux de Données
**Dernière mise à jour :** 05 Mai 2026
**Projet :** Smart City Digital Twin Martinique
---
## Architecture Globale
```mermaid
graph TB
subgraph Simulateur["🖥️ Simulateur (Host Python)"]
SIM[Smart City Simulator<br/>10 capteurs<br/>Intervalle: configurable]
end
subgraph MQTT_Brokers["📡 MQTT Brokers"]
EMQ[EMQX<br/>port 11883]
MOS[Mosquitto<br/>port 1883]
BUN[BunkerM<br/>port 1900<br/>MQTTS/TLS]
end
subgraph Stream["⚡ Event Streaming"]
PUL[Pulsar<br/>port 6650<br/>Topics: smartcity-*]
RED[Redpanda<br/>port 8082 REST<br/>Topics: traffic, air-quality, ...]
end
subgraph CB["🔗 Context Brokers"]
ORI[Orion-LD<br/>NGSI-LD<br/>port 1026]
STE[Stellio<br/>NGSI-LD<br/>port 8080]
FRO[FROST-Server<br/>SensorThings<br/>port 8080]
end
subgraph Storage["💾 Stockage & Métriques"]
INF[InfluxDB<br/>Bucket: iot_data<br/>port 8086]
PRO[Prometheus<br/>Scrape: /metrics<br/>port 9090]
GEO[GeoServer<br/>WMS/WFS/WMTS<br/>port 8080]
end
subgraph IoT_Platform["🏢 Plateforme IoT"]
ORM[OpenRemote Manager<br/>MQTT Agent<br/>port 8080]
KC[Keycloak<br/>port 8080]
end
subgraph VIZ["📊 Visualisation"]
GRA[Grafana<br/>Dashboards<br/>port 3000]
MAP[MapStore<br/>WMS/WFS<br/>port 8080]
end
subgraph Distribution["🔄 Distribution Service"]
DIST[Pulsar Distribution<br/>Pulsar → Brokers]
end
subgraph Consumer["📥 Redpanda Consumer"]
RCONS[Redpanda → InfluxDB<br/>REST → InfluxDB]
end
%% ── Flux Simulateur ──────────────────────────────────────────────────
SIM -->|"1⃣ MQTT publish<br/>city/sensors/{type}/{id}"| EMQ
SIM -->|"1⃣ MQTT publish"| MOS
SIM -->|"1⃣ MQTT publish"| BUN
SIM -->|"2⃣ HTTP POST<br/>NGSI-LD"| ORI
SIM -->|"2⃣ HTTP POST<br/>NGSI-LD"| STE
SIM -->|"2⃣ HTTP POST<br/>SensorThings"| FRO
SIM -->|"3⃣ Pulsar client<br/>pulsar://localhost:6650"| PUL
SIM -->|"4⃣ HTTP REST Proxy<br/>localhost:8082/topics/"| RED
SIM -->|"5⃣ InfluxDB v2 API<br/>async non-bloquant"| INF
%% ── Flux Distribution (Pulsar → Brokers) ──────────────────────────────
PUL -->|"Consomme<br/>smartcity-*"| DIST
DIST -->|"Republish<br/>MQTT"| EMQ
DIST -->|"Republish<br/>MQTT"| MOS
DIST -->|"Republish<br/>NGSI-LD"| ORI
DIST -->|"Republish<br/>NGSI-LD"| STE
DIST -->|"Republish<br/>SensorThings"| FRO
%% ── Flux Redpanda → InfluxDB ──────────────────────────────────────────
RED -->|"REST poll<br/>topics/{name}/offsets"| RCONS
RCONS -->|"Line Protocol<br/>Write API"| INF
%% ── OpenRemote MQTT Agent ──────────────────────────────────────────────
EMQ -->|"6⃣ Subscribe<br/>city/sensors/#"| ORM
MOS -->|"6⃣ Subscribe"| ORM
BUN -->|"6⃣ Subscribe"| ORM
%% ── Métriques Prometheus ────────────────────────────────────────────────
SIM -->|"7⃣ /metrics<br/>port 8001"| PRO
EMQ -->|"/api/v5/metrics"| PRO
STE -->|"/actuator/prometheus"| PRO
FRO -->|"/metrics"| PRO
INF -->|"/metrics"| PRO
RED -->|"/public_metrics"| PRO
ORM -->|"/actuator/prometheus"| PRO
GRA -->|"/metrics"| PRO
%% ── Visualisation ─────────────────────────────────────────────────────
INF -->|"Datasources<br/>Flux IoT"| GRA
ORI -->|"NGSI-LD<br/>Datasource"| GRA
STE -->|"NGSI-LD<br/>Datasource"| GRA
FRO -->|"SensorThings<br/>Datasource"| GRA
GEO -->|"WMS/WMTS"| MAP
ORM -->|MapSettings<br/>Martinique| MAP
ORM -->|"Live assets<br/>REST"| GRA
```
---
## Flux Détaillés
### 1⃣ Flux MQTT — Brokers
| Broker | Port | Protocol | Topics |
|--------|------|----------|--------|
| EMQX | 11883 | MQTT | `city/sensors/{type}/{id}` |
| Mosquitto | 1883 | MQTT | `city/sensors/{type}/{id}` |
| BunkerM | 1900 | MQTTS (TLS) | `city/sensors/{type}/{id}` |
Le simulateur publie simultanément sur les 3 brokers.
### 2⃣ Flux HTTP REST — Context Brokers
| Broker | Format | Port | Topics |
|--------|--------|------|--------|
| Orion-LD | NGSI-LD | 1026 | Entités par type |
| Stellio | NGSI-LD | 8080 | Entités par type |
| FROST-Server | SensorThings | 8080 | Things → Datastreams → Observations |
### 3⃣ Flux Pulsar — Event Streaming
- **Topics** : `persistent://public/default/smartcity-traffic`, `smartcity-airquality`, `smartcity-parking`, `smartcity-noise`, `smartcity-weather`, `smartcity-light`
- **Port binaire** : `6650` (connectable depuis le host)
- **Distribution** : Le service `pulsar-distribution` consomme ces topics et republie vers les brokers MQTT et context brokers
### 4⃣ Flux Redpanda — Kafka-compatible REST
- **REST Proxy** : `http://localhost:8082`
- **Topics** : `traffic`, `air-quality`, `parking`, `noise`, `weather`, `air-quality`
- **Payload** : Base64(JSON) dans `{"records": [{"value": "<base64>"}]}`
- **Consumer** : `redpanda/consumer.py` — poll toutes les 10s et écrit dans InfluxDB
### 5⃣ Flux InfluxDB — Temps Réel
- **API** : `http://localhost:8086/api/v2/write`
- **Bucket** : `iot_data`
- **Org** : `digitribe`
- **Mode** : Asynchrone (thread daemon) pour ne pas bloquer le publish MQTT
### 6⃣ OpenRemote — MQTT Agent
L'agent MQTT d'OpenRemote souscrit aux topics `city/sensors/#` sur les brokers MQTT (EMQX, Mosquitto, BunkerM). Les payloads sont automatiquement parsés et les attributs des assets sont mis à jour.
**Configuration via Manager UI** (`https://openremote.digitribe.fr/manager/`) :
1. Se connecter avec `admin/Digitribe972`
2. Choisir le realm `smartcity`
3. **Assets → Agents → + Add Agent**
4. Type : **MQTT Agent**
5. Configurer :
- **MQTT Broker URI** : `tcp://emqx_emqx_1:1883` (réseau smartcity-shared)
- **Topic Filter** : `city/sensors/#`
- **QoS** : 1
- **Enabled** : ✅
### 7⃣ Flux Prometheus — Métriques
| Service | Endpoint `/metrics` | Scrape |
|---------|---------------------|--------|
| Simulator | `localhost:8001` | ✅ |
| EMQX | `emqx_emqx_1:8081/api/v5/metrics` | ✅ |
| Stellio | `stellio-api-gateway:8080/actuator/prometheus` | ✅ |
| FROST | `frost_http-web-1:8080/metrics` | ✅ |
| InfluxDB | `smart-city-influxdb:8086/metrics` | ✅ |
| Redpanda | `smart-city-redpanda-console:8080/public_metrics` | ✅ |
| OpenRemote | `openremote-manager-1:8080/actuator/prometheus` | ✅ |
| Grafana | `smart-city-grafana:3000/metrics` | ✅ |
---
## Tableau Récapitulatif
| Composant | Technologie | Port | Statut |
|-----------|-------------|------|--------|
| Simulator | Python + paho-mqtt | Host:8001 (metrics) | ✅ Actif |
| EMQX | MQTT Broker | 11883 | ✅ Connecté |
| Mosquitto | MQTT Broker | 1883 | ✅ Connecté |
| BunkerM | MQTTS Broker | 1900 | ✅ Connecté |
| Orion-LD | NGSI-LD Broker | 1026 | ✅ Données |
| Stellio | NGSI-LD Broker | 8080 | ✅ Données |
| FROST-Server | SensorThings API | 8080 | ✅ Données |
| OpenRemote | IoT Platform | 8080 | ✅ UI OK |
| InfluxDB | Time Series DB | 8086 | ✅ Bucket iot_data |
| Redpanda | Kafka-compatible | 8082 REST | ✅ Topics actifs |
| Pulsar | Event Streaming | 6650 | ✅ Connecté |
| Prometheus | Metrics | 9090 (conf) | ⏳ Container arrêté |
| Grafana | Visualisation | 3000 | ✅ Dashboards |
| GeoServer | Geo Data | 8080 | ✅ REST OK |
| MapStore | Cartographie | 8080 | ✅ WMS/WMTS |
---
## Commandes Utiles
```bash
# Redémarrer le service de distribution Pulsar
cd ~/smart-city-digital-twin-martinique
docker build -t smart-city-pulsar-distribution:latest -f pulsar/Dockerfile pulsar/
docker compose -f docker-compose.yml -f docker-compose.distribution.yml up -d pulsar-distribution
# Redémarrer Prometheus (prometheus-brokers)
cd ~/smart-city-digital-twin-martinique
docker compose up -d prometheus-brokers
# Lancer le consumer Redpanda (host)
cd ~/smart-city-digital-twin-martinique
python3 redpanda/consumer.py
# Vérifier les topics Redpanda
curl -s http://localhost:8082/topics
# Vérifier les métriques simulator
curl -s http://localhost:8001/metrics | grep "^simulator_"
# Logs distribution service
docker logs -f smart-city-pulsar-distribution
```