Logging in Windows Azure WAD using Log4Net

Question

i want to log into WindowsAzure WADLogsTable using log4net.

Answer 1

Hello,

You must use the "log4net.Appender.TraceAppender" which is intended to "Writes logging events to the .NET trace system." The standard Windows Azure logging infrastructure is based on the .NET trace system with a Azure Trace Listener implementation.

Hope this helps

Answer 2

Hi-

Thanks for reply ,I am trying to implement in same way which you have stated but still not able to log custom message in WADLog table...

Could you help me some implementation part....

 

Thanks in advance ...

 

Answer 3

Hello,

First of all, you need to set the WindowsAzure trace listener in your configuration file (web.config for Web Roles, app.config for Worker roles):

 <system.diagnostics>
  <trace>
   <listeners>
    <add type="Microsoft.WindowsAzure.Diagnostics.DiagnosticMonitorTraceListener, Microsoft.WindowsAzure.Diagnostics, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" name="AzureDiagnostics">
    </add>
   </listeners>
  </trace>
 </system.diagnostics>

Then you need to start the Windows Azure diagnostics monitor in your OnStart() method for the role (done by default by the project template for Azure role):

      DiagnosticMonitorConfiguration diagConfig = DiagnosticMonitor.GetDefaultInitialConfiguration();
      //diagConfig.Directories.ScheduledTransferPeriod = TimeSpan.FromMinutes(5);
      diagConfig.Logs.ScheduledTransferPeriod = TimeSpan.FromMinutes(5);
      diagConfig.Logs.ScheduledTransferLogLevelFilter = LogLevel.Verbose;

      DiagnosticMonitor.Start("StorageClientAccount", diagConfig);

      // For information on handling configuration changes
      // see the MSDN topic at http://go.microsoft.com/fwlink/?LinkId=166357.
      RoleEnvironment.Changing += RoleEnvironmentChanging;

      // This code sets up a handler to update CloudStorageAccount instances when their corresponding
      // configuration settings change in the service configuration file.
      CloudStorageAccount.SetConfigurationSettingPublisher((configName, configSetter) =>
      {
        // Provide the configSetter with the initial value
        configSetter(RoleEnvironment.GetConfigurationSettingValue(configName));

        RoleEnvironment.Changed += (s, arg) =>
        {
          if (arg.Changes.OfType<RoleEnvironmentConfigurationSettingChange>()
            .Any((change) => (change.ConfigurationSettingName == configName)))
          {
            // The corresponding configuration setting has changed, propagate the value
            if (!configSetter(RoleEnvironment.GetConfigurationSettingValue(configName)))
            {
              // In this case, the change to the storage account credentials in the
              // service configuration is significant enough that the role needs to be
              // recycled in order to use the latest settings. (for example, the 
              // endpoint has changed)
              RoleEnvironment.RequestRecycle();
            }
          }
        };
      });

      return base.OnStart();
    }


    private void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
    {
      // If a configuration setting is changing
      if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
      {
        // Set e.Cancel to true to restart this role instance
        e.Cancel = true;
      }
    }

And finally, you have to either transfer logs periodically, as I do in last example, or transfer the logs on demand.

You can read more on Windows Azure Diagnostics in the Neil's blog post: http://convective.wordpress.com/2009/12/08/diagnostics-in-windows-azure/

 

Hope this helps

 

Answer 4

Hi Antin-

Thanks a lot for your time and such a valuable input,Its really helpful for me ....

Thanks again..

 

---

cpsingh

Answer 5

You should read this post

http://social.msdn.microsoft.com/Forums/en/windowsazure/thread/4937172d-866f-48fc-9bdf-05ace25bd87e

Answer 6

Hi

http://social.msdn.microsoft.com/Forums/en/windowsazure/thread/4937172d-866f-48fc-9bdf-05ace25bd87e

When i clicked on the above link , it shown the below message

You are not authorized to perform this action.

Can any one help me here.