Connect Existing Open Telemetry configuration to the AppHost collector

[baynezy]

I have been using the Aspire Dashboard stand alone as a replacement for Jaeger for a while. This all works well and I configure the URL for the collector manually in my appsettings.json.

I am trying to move over to using the Aspire AppHost directly. How do I get the URL that the Aspire OTEL collector is running on?

[baynezy]

I found it.

{
  "$schema": "https://json.schemastore.org/launchsettings.json",
  "profiles": {
    "https": {
      "commandName": "Project",
      "dotnetRunMessages": true,
      "launchBrowser": true,
      "applicationUrl": "https://localhost:17232;http://localhost:15191",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development",
        "DOTNET_ENVIRONMENT": "Development",
        "ASPIRE_DASHBOARD_OTLP_ENDPOINT_URL": "https://localhost:21196",
        "ASPIRE_RESOURCE_SERVICE_ENDPOINT_URL": "https://localhost:22057"
      }
    },
    "http": {
      "commandName": "Project",
      "dotnetRunMessages": true,
      "launchBrowser": true,
      "applicationUrl": "http://localhost:15191",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development",
        "DOTNET_ENVIRONMENT": "Development",
        "ASPIRE_DASHBOARD_OTLP_ENDPOINT_URL": "http://localhost:19231",
        "ASPIRE_RESOURCE_SERVICE_ENDPOINT_URL": "http://localhost:20094"
      }
    }
  }
}

It is the ASPIRE_DASHBOARD_OTLP_ENDPOINT_URL in launchSettings.json in the AppHost project.