Use Application Insights with ANZ #11312

4 Answer(s)

• 

  0

  ismcagdas created 2 years ago

  Support Team

  Hi,

  Your config totally seems fine. Could you check if this helps https://stackoverflow.com/a/65401502 ?

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  0

  cangunaydin created 2 years ago

  Hello @ismcagdas Not really helped. Actually i realize that if i log it by using ilogger in application layer or in controller, i can see it in application insights, but background job and background worker errors are not logged at all (I am using Hangfire for it.) What i couldn't understand is, i can see the hangfire errors on text file that i append to azure appservice root folder. They both use log4net, why fileappender can do it but not application insights appender? I really couldn't grasp it. Do you have any idea?

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• 

  0

  ismcagdas created 2 years ago

  Support Team

  Hi,

  Do you run the background jobs on your web app ?

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• 

  0

  cangunaydin created 2 years ago

  Hello again, I was trying couple of things to be sure about the problem. I make it work by doing couple of things. First of all i need to state that i am using hangfire on my app. Since hangfire is polling the database i see lots of dependency logs, so to fix that issue i have implemented custom telemetry processor. This stackoverflow link was helpful for that https://stackoverflow.com/questions/38320886/app-insights-disable-sql-dependency-telemetry

  using Microsoft.ApplicationInsights.Channel;
  using Microsoft.ApplicationInsights.Extensibility;
  using Microsoft.ApplicationInsights.DataContracts;
  
  public class NoSQLDependencies : ITelemetryProcessor
  {
      private ITelemetryProcessor Next { get; set; }
  
      // Link processors to each other in a chain.
      public NoSQLDependencies(ITelemetryProcessor next)
      {
          this.Next = next;
      }
      public void Process(ITelemetry item)
      {
          if (IsSQLDependency(item)) { return; }
          this.Next.Process(item);
      }
  
      private bool IsSQLDependency(ITelemetry item)
      {
          var dependency = item as DependencyTelemetry;
          if (dependency?.DependencyTypeName == "SQL")
          {
              return true;
          }
          return false;
      }
  }
  

  Afterwards I explicitly configured Hangfire to use Log4net by this code inside WebHostModule PreInitialize()

  GlobalConfiguration.Configuration.UseLog4NetLogProvider();
  

  now everythings work fine on my local machine. There is only one thing left i couldn't understand. if you look at the code below.

      public class TestAppService : BookAndAdAppServiceBase
      {
          private readonly IBackgroundJobManager _backgroundJobManager;
  
          private readonly ILogger _logger;
          public TestAppService(IBackgroundJobManager backgroundJobManager, ILogger logger)
          {
              _backgroundJobManager = backgroundJobManager;
              _logger = logger;
          }
  
          public async Task TestLogger()
          {
              Logger.Error($"Application Insights test from {nameof(TestAppService)}....", new Exception("this is custom exception"));
              _logger.Error($"Application Insights test with reference (can2) {nameof(TestAppService)}");
              await _backgroundJobManager.EnqueueAsync<TestJob, TestJobArgs>(new TestJobArgs() { TenantId = AbpSession.TenantId,UserId=AbpSession.UserId },delay:TimeSpan.FromSeconds(10));
          }
      }
  

  as you can see first logger is logging with exception, and this is coming to application insights as exception which is expected. On the other hand second logger since it doesn't pass any exception it is logged as Trace. Which at first sight seems weird since i call Error() method. But anyway it works fine, i think we can close this.

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