149 lines
4.2 KiB
Markdown
149 lines
4.2 KiB
Markdown
# Virtueller Gesundheitsassistent
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Java desktop application that receives binary health predictions via MQTT, stores them in SQLite, computes rolling risk ratios, and visualizes the result in a dashboard with an avatar streaming view.
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## Features
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- Swing desktop UI with two tabs:
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- `Avatar Streaming` (embedded JCEF browser, default `http://localhost`)
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- `Dashboard` (time series chart + problem level bar)
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- MQTT client subscriber (`tcp://localhost:1883`) for prediction events
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- SQLite persistence (`data/health.db`)
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- Rolling ratio evaluation and automatic risk level classification:
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- `NONE` for `< 0.5`
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- `WARNING` for `>= 0.5`
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- `HIGH` for `>= 0.8`
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- `DISASTER` for `>= 0.9`
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- Writes animation state JSON for Unreal integration
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- Optional external process startup:
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- Python MQTT simulator
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- Unreal/Pixel Streaming scripts
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- Custom async logger with file output + rotation
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## Tech Stack
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- Java 17
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- Maven
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- Swing + FlatLaf
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- JFreeChart
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- Eclipse Paho MQTT
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- SQLite JDBC
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- JCEF (`jcefmaven`)
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- JUnit 5 + Mockito (tests)
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## Runtime Flow
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1. App initializes look and feel and services.
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2. MQTT subscriber listens on topic from config (`mqtt.topic`).
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3. Incoming JSON payloads are validated in `BinaryEventService`.
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4. `prediction` (`0`/`1`) is stored in SQLite.
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5. `EvaluationService` computes ratio over last 20 values.
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6. `AppState` updates notify UI controllers.
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7. Dashboard chart and status bar refresh.
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8. Animation state file is written for Unreal consumption.
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## Payload Format
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Incoming MQTT payload must be JSON like:
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```json
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{
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"valid": true,
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"_id": 123,
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"prediction": 0
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}
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```
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## Prerequisites
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- JDK 17
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- Maven 3.9+
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- Local MQTT broker on `localhost:1883` (or adjust code/config)
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- Windows environment if using bundled process scripts/paths
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- Optional: Python (if MQTT simulator should be auto-started)
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- Optional: Unreal + Pixel Streaming setup (path-based integration)
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## Configuration
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Main config: `src/main/resources/config/application.properties`
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- `app.mode`: current mode flag (`test`)
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- `python.path`: Python executable for simulator startup
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- `mqtt.topic`: subscribed topic (default `PREDICTION`)
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- `mqtt_sim.enabled`: start simulator process on app startup
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- `mqtt_sim.script`: simulator script path
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- `unreal.enabled`: start Unreal-related processes
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- `unreal.executable`: PowerShell script path for Unreal start
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- `unreal.signalling_server.script`: signalling server batch path
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Logger config: `src/main/resources/config/logger.properties`
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- `logger.level`
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- `logger.file.enabled`
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- `logger.file`
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- `logger.max.size.mb`
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## Run
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### 1) Start MQTT Broker
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Start a broker on `localhost:1883` (for example Mosquitto).
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### 2) Start the App
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```powershell
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mvn clean compile
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mvn org.codehaus.mojo:exec-maven-plugin:3.5.0:java -Dexec.mainClass=vassistent.App
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```
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Or run `vassistent.App` directly from IntelliJ.
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### 3) Send Test Data
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Option A: enable simulator in `application.properties`:
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- set `mqtt_sim.enabled=true`
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- verify `python.path` and `mqtt_sim.script`
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Option B: publish messages manually to topic `PREDICTION`.
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## Tests
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Run:
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```powershell
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mvn test
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```
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Current state in this repository on Java 17:
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- `DataPersistenceServiceTest` and `StatisticsServiceTest` execute.
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- Mockito-based tests fail because dependency is `mockito-all:2.0.2-beta` (legacy CGLIB + Java module access issue on modern JDKs).
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## Project Structure
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```text
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src/main/java/vassistent
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App.java
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bootstrap/ # wiring, context, shutdown sequencing
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controller/ # Swing controllers
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model/ # state + data types
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service/ # MQTT, DB, stats, evaluation, processes
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ui/ # App window, dashboard, streaming, widgets
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util/ # config + logger
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src/main/resources
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config/application.properties
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config/logger.properties
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scripts/mqtt_simulator.py
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scripts/start_avatar.ps1
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```
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## Important Notes
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- `AnimationFileService` currently writes to a hardcoded absolute path:
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- `C:\Users\Student\Documents\Dannick\Prototyp1\Saved\animation.json`
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- Unreal process handling also uses hardcoded PID/script paths.
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- On app shutdown, `data/health.db` is deleted by `App.deleteDatabase()`.
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- The signalling server process startup in `ProcessManagerService` is prepared but currently not launched (`pb.start()` commented).
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