I have created and deployed a group of function apps (Blob and Time triggered) and they are deployed on the Azure Portal, it all seems fine locally but I have noticed that when I look at the logs on the portal (App Insights), I can only see 2 entries and the function finishes running in few miliseconds which I find a bit estrange as locally it takes more time to complete, but I can’t find the reason for this (I have got many entries throughout the code).

Code example:

  [Function("TeamLinkDepartmentFeed")]
  public async Task Run([TimerTrigger("%ScheduleTriggerTime%")]
  TimerInfo timer, FunctionContext context)
  {
  var logger = context.GetLogger(nameof(TeamLinkDepartmentFeed));
  try
  {
      logger.LogInformation($"C# Timer trigger TeamLinkDepartmentFeed function executed at: {DateTime.Now}");
      var graphService = new GraphService(logger);
      Instant instant = SystemClock.Instance.GetCurrentInstant();
      Stopwatch stopWatch = new Stopwatch();
      stopWatch.Start();

      var departmentListId = Environment.GetEnvironmentVariable("DepartmentListId");
      var sharepointSiteId = Environment.GetEnvironmentVariable("SharepointSiteId");
      List<User> users = await graphService.ExtractDepartmentFeedFromEntraIdAsync();
      long azureElapsed = stopWatch.ElapsedMilliseconds;
      logger.LogInformation(
          $"Retrieved {users.Count} from AzureAD.  That took {azureElapsed / 1000} seconds @ {DateTime.Now}");
      List<Department> departments = ConvertGraphUsersToDepartments(users, instant, logger);

      List<Department> departmentsWithActionSet = await graphService.SetDepartmentActionByCheckingExistingRecords(departments, departmentListId, sharepointSiteId);
      await UpdateDepartmentListAsync(departmentsWithActionSet, graphService, logger, sharepointSiteId, departmentListId);

      logger.LogInformation($"Department feed has been updated,  That took {(azureElapsed) / 1000} seconds - total {stopWatch.ElapsedMilliseconds / 1000} seconds @ {DateTime.Now} function completed successfully");
  }
  catch (Exception ex)
  {
      logger.LogError(ex, $" Error executing function {context.FunctionDefinition} {ex.Message}");
  }

Even more unusual, I can see some logging coming from the Blob storage which has not been triggered and I don’t understand why this is happening inside the logs of my time triggered functions if they are not depending on each other. This only happens when I programmatically trigger the function using Postman, please see screenshot below

can someone help please?

Here is my Host.json

{
“version”: “2.0”,
“functions”: [],
“functionTimeout”: “00:10:00”,
“healthMonitor”: {
“enabled”: false,
“healthCheckInterval”: “00:00:10”,
“healthCheckWindow”: “00:02:00”,
“healthCheckThreshold”: 6,
“counterThreshold”: 0.8
},
“logging”: {
“fileLoggingMode”: “debugOnly”,
“logLevel”: {
“default”: “Information”
},
“console”: {
“isEnabled”: true
},
“applicationInsights”: {
“samplingSettings”: {
“isEnabled”: true,
“maxTelemetryItemsPerSecond”: 20,
“excludedTypes”: “Request”
}
}
}
}

Many thanks in advance!