[P] Add architecture diagram

diagrams/architecture-diagram.puml

@@ -0,0 +1,81 @@
+@startuml
+interface MQTT as mqtt1
+interface MQTT as mqtt2
+interface HTTP as http1
+interface HTTP as http2
+interface WebSocket
+
+node Agent {
+  component Accelerometer
+  component GPS
+  component CarParkingSlots
+  component "Data Aggregator" as agent_agg
+}
+
+node Edge {
+  component AgentMQTTAdapter
+  component AgentDataProcessor
+  component HubMQTTAdapter
+  component HubHTTPAdapter
+}
+
+node Hub {
+  component EdgeHTTPAdapter
+  component EdgeMQTTAdapter
+  component Aggregator
+  component StoreHTTPAdapter
+  component Redis
+}
+
+node Store {
+  component "HTTP Rest API" as store_http
+  component "SQL Adapter" as store_sql
+  component "Websocket API" as store_ws
+}
+
+node MapView {
+  component "Store Processor" as mv_sp
+  component "Input Handler" as mv_ih
+  component "Map"
+}
+
+component PostgreSQL
+
+agent_agg --> Accelerometer
+agent_agg --> GPS
+agent_agg --> CarParkingSlots
+
+agent_agg -> mqtt1
+
+mqtt1 <- AgentMQTTAdapter
+AgentMQTTAdapter -> AgentDataProcessor
+AgentDataProcessor --> HubMQTTAdapter
+AgentDataProcessor --> HubHTTPAdapter
+HubMQTTAdapter --> mqtt2
+HubHTTPAdapter --> http1
+
+mqtt2 <-- EdgeMQTTAdapter
+http1 <-- EdgeHTTPAdapter
+EdgeMQTTAdapter --> Aggregator
+EdgeHTTPAdapter --> Aggregator
+Aggregator <--> Redis
+StoreHTTPAdapter <-- Aggregator
+
+http2 <-- StoreHTTPAdapter
+store_http --> http2
+store_http -> store_sql
+store_sql <- store_ws
+store_ws --> WebSocket
+
+store_sql <--> PostgreSQL
+
+WebSocket <-- mv_sp
+mv_sp <-- mv_ih
+mv_sp --> Map
+
+actor Spectator as user
+
+Map --> user
+mv_ih <-- user
+
+@enduml