mermaid flow doc

jj flow

sequenceDiagram
    participant AI as Application Insights
    link AI: JS SDK @ https://docs.microsoft.com/en-us/azure/azure-monitor/app/nodejs
    link AI: Node.js SDK @ https://docs.microsoft.com/en-us/azure/azure-monitor/app/javascript
    link AI: Azure Functions Java Distributed Tracing @ https://docs.microsoft.com/en-ca/azure/azure-monitor/app/monitor-functions
    link AI: AKS App Monitoring @ https://docs.microsoft.com/en-us/azure/azure-monitor/app/kubernetes-codeless
    link AI: AKS Java Codeless Monitoring @ https://docs.microsoft.com/en-us/azure/azure-monitor/app/java-in-process-agent
    participant Functions as Azure Functions
    participant FrontendServer as Frontend
    participant Storage as Storage Account
    participant IoTHub as IoT Hub
    link IoTHub: Uploading files @ https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-file-upload
    participant EdgeDevice as Edge Device
    actor Bob as Bob (Frontend User/Client)
    actor Alice as Alice (IoT Platform Engineer)

    loop user requests frontend
        Bob->>+FrontendServer: Makes request to page
        FrontendServer-->>-Bob: HTML with AppInsights JS

        loop as user interacts with client
            par Page changes, load times, etc...
                Bob-->>AI: Metrics
            and API calls
                Bob->>+FrontendServer: Makes API calls
                FrontendServer->>Functions: Does stuff
                Functions-->>AI: Metrics
                FrontendServer-->>AI: Metrics
                FrontendServer-->>-Bob: response
                Bob-->>AI: Sends metrics for API call
            end
        end
    end

    loop edge device uploads files
        EdgeDevice->>+IoTHub: Initiate File upload
        IoTHub->>EdgeDevice: correlationId and sasToken
        Note over IoTHub,EdgeDevice: How to monitor failures in SaS token generation?
        EdgeDevice->>+Storage: Upload Blob
        Note over EdgeDevice,Storage: How to monitor if upload fails?
        Storage-->>-EdgeDevice: ack
        EdgeDevice->>IoTHub: Notify Complete upload
        IoTHub-->>-EdgeDevice: ack
        Storage-->>Functions: Storage trigger
        Note over Storage,Functions: Can we pick up the correlationId created from IoTHub from the storage trigger?
        Functions->>+Functions: Do something
        Note over Functions,Functions: TBD: What to do here? (malware scan?)
        Functions-->>AI: Requests, dependencies, traces, etc...
        Functions->>-Functions: Do something
    end

    loop Every N Minutes
        AI->>AI: Check that messages in == messages out (within a range)
        alt is ok
            AI->>AI: noop
        else is not ok
            AI->>Alice: Email notification saying something is wrong
        end
    end