Overview

It has been observed that when the Microsoft.Azure.WebJobs.Logging.ApplicationInsights package is added to a dotnet Azure Function project, the telemetry for Azure resource dependencies (e.g., Blob storage, Event Hub, Service Bus) is no longer captured.

The goal of this repo is to provide an easy way to reproduce this issue.

Prerequisites

This sample solution was implemented using:

• .NET core 3.1
• Azure Function Core Tools (version 3.0.3904)
• An Application Insights instance in Azure
• An Azure Blob Storage Account (& a container named telemetry)

Steps to reproduce

1. Clone the repo

2. Configure your local.settings.json

   # Create you local.settings.json file
   cp sample.local.settings.json local.settings.json

   Populate the following values with your own connection strings:

   • "APPLICATIONINSIGHTS_CONNECTION_STRING": ""
   • "BLOB_STORAGE_CONNECTION_STRING": ""

3. Run the app

   func start

4. Check Application Insights using Transaction search on the navigation menu

   Your application should run successfully and the telemetry captured in your AppInsights instance should look like this:

   

5. Add package Microsoft.Azure.WebJobs.Logging.ApplicationInsights to your project

   dotnet add package Microsoft.Azure.WebJobs.Logging.ApplicationInsights

   Optionally, you can uncomment the commented code in test-telemetry.cs, but this is not required.

6. Check Application Insights again

   Expected results

   The expected results are to get telemetry identical to the one from step 4.

   Actual results

   The telemetry captured in your AppInsights instance is missing the call to Blob Storage: