Question

I’m sure I have missed something simple but I can’t get simple Trace.WriteLine to work on Azure.

Steps I have taken:

Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString has been set up to our Azure storage account

Import Module Diagnostics to service definition file.

Web config:

  <system.diagnostics>
    <switches>
      <add name="logLevel" value="4" />
    </switches>
    <trace autoflush="false" indentsize="4">
      <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>

WebRole.cs

public class WebRole : RoleEntryPoint
{
    public override bool OnStart()
    {


        String wadConnectionString = "Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString";

        CloudStorageAccount cloudStorageAccount = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue(wadConnectionString));

        RoleInstanceDiagnosticManager roleInstanceDiagnosticManager =
                cloudStorageAccount.CreateRoleInstanceDiagnosticManager(
                RoleEnvironment.DeploymentId,
                RoleEnvironment.CurrentRoleInstance.Role.Name,
                RoleEnvironment.CurrentRoleInstance.Id);

        DiagnosticMonitorConfiguration diagnosticMonitorConfiguration =
            roleInstanceDiagnosticManager.GetCurrentConfiguration();

        diagnosticMonitorConfiguration.Directories.ScheduledTransferPeriod =
               TimeSpan.FromMinutes(5d);

        diagnosticMonitorConfiguration.Logs.ScheduledTransferPeriod =
               TimeSpan.FromMinutes(1d);

        diagnosticMonitorConfiguration.Logs.ScheduledTransferLogLevelFilter = LogLevel.Verbose;

        roleInstanceDiagnosticManager.SetCurrentConfiguration
              (diagnosticMonitorConfiguration);

        Trace.WriteLine("This is the message");
        Debug.Write("This is the debug message");
        System.Diagnostics.Trace.TraceError("message2");
        System.Diagnostics.Trace.TraceWarning("message warning");
        System.Diagnostics.Trace.TraceInformation("message warning");
        Trace.Flush();
        return base.OnStart();

    }
}

Solution is compiled as release.

When I view the objects in the storage account I can see a Table called WADDirectoriesTable and three blobs created called vsdeploy, wad-control-container and was-iis-logfiles.

Nothing that looks like my Trace information.

Many thanks

Answer 1

Right, sorted!

This post explains all: http://social.msdn.microsoft.com/Forums/pl-PL/windowsazuredata/thread/d3f2f1d7-f11e-4840-80f7-f61dc11742fb

It’s because in Azure SDK 1.3 upwards the listeners are different in the webrole.cs file from the rest of the web app due to it running fully in IIS. If I add trace items to the web app itself the table WADLogsTable appears with my trace information.