Dapr实验简易示例应用解析

【实例简介】
本示例应用模拟了一个交通控制系统，通过在高速公路的起点和终点设置摄像头来测量车辆的平均速度，并在超速时向车主发送罚单。该系统包含几个服务：车辆注册服务、罚款收集服务、交通控制服务和摄像头模拟器。

此外，本文还详细介绍了如何在自托管环境或Kubernetes上运行这个应用，以及如何使用Dapr的各种构建块和组件来实现应用的不同方面，例如服务调用、事件发布与订阅、状态管理和秘密管理等。

public class TrafficControlService
{
    public void EntryCamera(string licenseNumber, DateTime timestamp)
    {
        // 处理车辆进入
    }

    public void ExitCamera(string licenseNumber, DateTime timestamp)
    {
        // 处理车辆离开并计算平均速度
    }
}

【实例截图】
【核心代码】
文件清单
└── dapr-traffic-control-6129bf26265aa650c269d1b94a21f76f88bc7446
    ├── dapr-trafficcontrol-sample-diagrams.drawio
    ├── Figures.pptx
    ├── img
    │   ├── dapr-for-net-devs-cover-thumb.png
    │   ├── dapr-setup.png
    │   ├── logging-finecollectionservice.png
    │   ├── logging-simulation.png
    │   ├── logging-trafficcontrolservice-actors.png
    │   ├── logging-trafficcontrolservice.png
    │   ├── logging-vehicleregistrationservice.png
    │   ├── mailbox.png
    │   ├── redis-password.png
    │   ├── sequence-dapr.png
    │   ├── sequence.png
    │   ├── services.png
    │   ├── speed-trap-overview.png
    │   └── visualsim.png
    ├── LICENSE
    ├── README.md
    └── src
        ├── dapr
        │   ├── components
        │   │   ├── email.yaml
        │   │   ├── entrycam.yaml
        │   │   ├── exitcam.yaml
        │   │   ├── pubsub.yaml
        │   │   ├── secrets-file.yaml
        │   │   ├── secrets.json
        │   │   └── statestore.yaml
        │   └── config
        │       ├── config.yaml
        │       ├── consul-config.yaml
        │       └── ratelimit-config.yaml
        ├── DaprTrafficControl.code-workspace
        ├── FineCollectionService
        │   ├── appsettings.Development.json
        │   ├── appsettings.json
        │   ├── Controllers
        │   │   └── CollectionController.cs
        │   ├── Dockerfile
        │   ├── DomainServices
        │   │   ├── HardCodedFineCalculator.cs
        │   │   └── IFineCalculator.cs
        │   ├── FineCollectionService.csproj
        │   ├── GlobalUsings.cs
        │   ├── Helpers
        │   │   └── EmailUtils.cs
        │   ├── Models
        │   │   ├── SpeedingViolation.cs
        │   │   └── VehicleInfo.cs
        │   ├── Program.cs
        │   ├── Properties
        │   │   └── launchSettings.json
        │   ├── Proxies
        │   │   └── VehicleRegistrationService.cs
        │   ├── start-selfhosted.ps1
        │   ├── start-selfhosted.sh
        │   └── test.http
        ├── global.json
        ├── Infrastructure
        │   ├── consul
        │   │   ├── start-consul.ps1
        │   │   ├── start-consul.sh
        │   │   ├── stop-consul.ps1
        │   │   └── stop-consul.sh
        │   ├── maildev
        │   │   ├── start-maildev.ps1
        │   │   ├── start-maildev.sh
        │   │   ├── stop-maildev.ps1
        │   │   └── stop-maildev.sh
        │   ├── mosquitto
        │   │   ├── Dockerfile
        │   │   ├── mosquitto.conf
        │   │   ├── start-mosquitto.ps1
        │   │   ├── start-mosquitto.sh
        │   │   ├── stop-mosquitto.ps1
        │   │   └── stop-mosquitto.sh
        │   ├── rabbitmq
        │   │   ├── start-rabbitmq.ps1
        │   │   ├── start-rabbitmq.sh
        │   │   ├── stop-rabbitmq.ps1
        │   │   └── stop-rabbitmq.sh
        │   ├── start-all.ps1
        │   ├── start-all.sh
        │   ├── stop-all.ps1
        │   └── stop-all.sh
        ├── k8s
        │   ├── build-docker-images.ps1
        │   ├── dapr-config.yaml
        │   ├── email.yaml
        │   ├── entrycam.yaml
        │   ├── exitcam.yaml
        │   ├── finecollectionservice.yaml
        │   ├── maildev.yaml
        │   ├── mosquitto
        │   │   ├── Dockerfile
        │   │   └── mosquitto.conf
        │   ├── mosquitto.yaml
        │   ├── namespace.yaml
        │   ├── pubsub-rabbitmq.yaml
        │   ├── rabbitmq.yaml
        │   ├── redis.yaml
        │   ├── secrets.yaml
        │   ├── simulation.yaml
        │   ├── start.ps1
        │   ├── state-redis.yaml
        │   ├── stop.ps1
        │   ├── trafficcontrolservice.yaml
        │   ├── vehicleregistrationservice.yaml
        │   └── zipkin.yaml
        ├── Observability
        │   └── grafana
        │       ├── get-grafana-password.ps1
        │       ├── grafana-actor-dashboard.json
        │       ├── grafana-sidecar-dashboard.json
        │       ├── grafana-system-services-dashboard.json
        │       ├── install-grafana.ps1
        │       ├── namespace.yaml
        │       ├── start-grafana.ps1
        │       └── uninstall-grafana.ps1
        ├── Simulation
        │   ├── CameraSimulation.cs
        │   ├── Dockerfile
        │   ├── Events
        │   │   └── VehicleRegistered.cs
        │   ├── GlobalUsings.cs
        │   ├── Program.cs
        │   ├── Proxies
        │   │   ├── ITrafficControlService.cs
        │   │   └── MqttTrafficControlService.cs
        │   └── Simulation.csproj
        ├── TrafficControlService
        │   ├── Actors
        │   │   ├── IVehicleActor.cs
        │   │   └── VehicleActor.cs
        │   ├── appsettings.Development.json
        │   ├── appsettings.json
        │   ├── Controllers
        │   │   └── TrafficController.cs
        │   ├── Dockerfile
        │   ├── DomainServices
        │   │   ├── DefaultSpeedingViolationCalculator.cs
        │   │   └── ISpeedingViolationCalculator.cs
        │   ├── Events
        │   │   └── VehicleRegistered.cs
        │   ├── GlobalUsings.cs
        │   ├── Models
        │   │   ├── SpeedingViolation.cs
        │   │   └── VehicleState.cs
        │   ├── Program.cs
        │   ├── Properties
        │   │   └── launchSettings.json
        │   ├── Repositories
        │   │   ├── DaprVehicleStateRepository.cs
        │   │   └── IVehicleStateRepository.cs
        │   ├── start-selfhosted.ps1
        │   ├── start-selfhosted.sh
        │   ├── test.http
        │   └── TrafficControlService.csproj
        ├── VehicleRegistrationService
        │   ├── apply-load.ps1
        │   ├── apply-load.sh
        │   ├── appsettings.Development.json
        │   ├── appsettings.json
        │   ├── Controllers
        │   │   └── VehicleInfoController.cs
        │   ├── Dockerfile
        │   ├── GlobalUsings.cs
        │   ├── Models
        │   │   └── VehicleInfo.cs
        │   ├── Program.cs
        │   ├── Properties
        │   │   └── launchSettings.json
        │   ├── Repositories
        │   │   ├── InMemoryVehicleInfoRepository.cs
        │   │   └── IVehicleRepository.cs
        │   ├── start-selfhosted.ps1
        │   ├── start-selfhosted.sh
        │   ├── test.http
        │   └── VehicleRegistrationService.csproj
        └── VisualSimulation
            ├── appsettings.Development.json
            ├── appsettings.json
            ├── GlobalUsings.cs
            ├── Program.cs
            ├── Properties
            │   └── launchSettings.json
            ├── VisualSimulation.csproj
            └── wwwroot
                ├── assets
                │   ├── ambulance.png
                │   ├── background.png
                │   ├── brushes.png
                │   ├── camera.png
                │   ├── clouds.png
                │   ├── crossover.png
                │   ├── garbage.png
                │   ├── hummer.png
                │   ├── mini.png
                │   ├── minivan.png
                │   ├── paint-general.png
                │   ├── pickup.png
                │   ├── road-bottom.png
                │   ├── road-middle.png
                │   ├── schoolbus.png
                │   ├── sedan.png
                │   ├── semitruck.png
                │   ├── structure-overhead.png
                │   ├── structure-pole.png
                │   └── truck.png
                ├── favicon.ico
                ├── index.html
                └── js
                    ├── car.js
                    ├── car-painter.js
                    ├── debugscene.js
                    ├── lane.js
                    ├── main.js
                    ├── merge-aggressive.js
                    ├── merge.js
                    ├── mqttws31.min.js
                    ├── phaser.min.js
                    ├── settings.js
                    ├── trafficcontrolsvc-http.js
                    ├── trafficcontrolsvc-mqtt.js
                    ├── trafficscene.js
                    └── utils.js

43 directories, 185 files