public CloudBackend(Workspace workspace, IInfrastructureEnvironment environment)
{
System = workspace.Model.AddSoftwareSystem(
Location.Internal,
"Azure IoT system",
"Azure cloud based backend for processing data created on sensors / devices");
SecretStorage = new SecretStorage(this, environment);
CloudGateway = new CloudGateway(this, environment);
DeviceProvisioning = new DeviceProvisioning(this, CloudGateway, environment);
TelemetryStorage = new TelemetryStorage(this, environment);
ApplicationInsights = new ApplicationInsights(this, environment);
MasterDataStorage = new MasterDataStorage(this, new SqlServer(environment), environment);
SanitizedMessages = new SanitizedMessages(this, new EventHubNamespace(environment), environment);
Ingress = new Ingress(this, CloudGateway, TelemetryStorage, MasterDataStorage, SanitizedMessages, ApplicationInsights, environment);
StreamAnalytics = new StreamAnalytics(this, SanitizedMessages, TelemetryStorage, environment);
RestApi = new RestApi(this, TelemetryStorage, MasterDataStorage, ApplicationInsights, environment);
UserInterface = new UserInterface(this, RestApi, environment);
Device = workspace.Model.AddSoftwareSystem(Location.External, "Device", "Sends data into the cloud");
Device.Uses(CloudGateway, "Send telemetry data and failure events", "MQTT");
Device.Uses(DeviceProvisioning, "Provision device", "HTTPS");
User = workspace.Model.AddPerson("User", "Person using the system to view data and take action on it");
User.Uses(UserInterface, "View devices and their raw and aggregated data");
StoreSecretsInKeyVault();
}
public Ingress(CloudBackend cloudBackend, CloudGateway hub,
TelemetryStorage telemetryStorage,
MasterDataStorage masterDataStorage,
SanitizedMessages sanitizedMessages,
ApplicationInsights applicationInsights,
IInfrastructureEnvironment environment)
{
Container = cloudBackend.System.AddContainer(
name: "Ingress",
description: "Receives incoming data from the cloud gateway and saves it into master data and telemetry data storages",
technology: "Azure Function");
Infrastructure = new FunctionAppService
{
Name = "ref-ingress-" + environment.Name
};
Uses(hub)
.Over <IoTHubSDK>()
.InOrderTo("Subscribes to incoming messages");
Uses(sanitizedMessages)
.Over <EventHubSDK>()
.InOrderTo("Publish sanitized messages");
Uses(telemetryStorage)
.Over(telemetryStorage.Infrastructure.TableEndpoint)
.InOrderTo("Persist telemetry data");
Uses(masterDataStorage).InOrderTo("Persist master data");
Uses(applicationInsights).InOrderTo("Log metrics");
}
public StreamAnalytics(CloudBackend cloudBackend, SanitizedMessages sanitizedMessages, TelemetryStorage telemetryStorage, IInfrastructureEnvironment environment)
{
Container = cloudBackend.System.AddContainer(
name: "Stream Analytics",
description: "Analyzes the incoming event stream for anomalies",
technology: "Azure Stream Analytics");
Infrastructure = new Structurizr.InfrastructureAsCode.Azure.Model.StreamAnalytics
{
Name = "ref-sa-" + environment.Name
};
Uses(sanitizedMessages).Over(Infrastructure.EventHubInput("messages", sanitizedMessages.Infrastructure)).InOrderTo("Process incoming events");
Uses(telemetryStorage).Over(Infrastructure.TableStorageOutput("out", telemetryStorage.Infrastructure, "aggregated", "partitionKey", "rowKey")).InOrderTo("Store aggregated data");
Infrastructure.TransformationQuery = "SELECT\r\n *\r\nINTO\r\n out\r\nFROM\r\n iothub";
}