Trace.WriteLine（）消息僅在Azure WorkerRole的OnStart（）中持久

Question

我正在開發Azure WorkerRole（）。在計算模擬器控制檯中，我看到所有Trace.WriteLine（）消息，但只有那些在OnStart（）中生成的消息似乎會持久存儲。

我ServiceConfiguration.Local.csfg有：

<Role name="MyWorkerRole"> 
    <Instances count="1" /> 
    <ConfigurationSettings> 
    <Setting name="Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString" value="UseDevelopmentStorage=true" /> 
    </ConfigurationSettings> 
</Role> 

我WorkerRole.cs有：

public override void Run() { 
    Trace.WriteLine("Called from Run(), where does this trace go???", "Information"); 

    // ... SNIP ... 
} 
public override bool OnStart() { 
    // Set the maximum number of concurrent connections 
    ServicePointManager.DefaultConnectionLimit = 12; 

    DiagnosticMonitorConfiguration dmc = DiagnosticMonitor.GetDefaultInitialConfiguration(); 
    dmc.Logs.ScheduledTransferPeriod = TimeSpan.FromMinutes(1); 
    dmc.Logs.ScheduledTransferLogLevelFilter = LogLevel.Verbose; 
    DiagnosticMonitor.Start("DiagnosticsConnectionString", dmc); 

    Trace.WriteLine("This trace appears in WADLogsTable", "Information"); 

    return base.OnStart(); 
} 

Answer 1

這看起來是正確的 - 我不知道你爲什麼看不到任何東西。我不知道開始是否忽略了你的配置變化。這裏有一些代碼我已經使用，將傳輸跟蹤日誌（我知道這個工程）：

private static void EnableDiagnostics(int transferTime) 
    { 
     string wadConnectionString = "Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString"; 
     CloudStorageAccount storageAccount = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue(wadConnectionString)); 

     RoleInstanceDiagnosticManager roleInstanceDiagnosticManager = storageAccount.CreateRoleInstanceDiagnosticManager(RoleEnvironment.DeploymentId, RoleEnvironment.CurrentRoleInstance.Role.Name, RoleEnvironment.CurrentRoleInstance.Id); 
     DiagnosticMonitorConfiguration config = roleInstanceDiagnosticManager.GetCurrentConfiguration(); 

     if (config == null) 
     { 
      config = DiagnosticMonitor.GetDefaultInitialConfiguration(); 
     } 

     config.Logs.ScheduledTransferPeriod = TimeSpan.FromMinutes(transferTime); 
     config.Logs.ScheduledTransferLogLevelFilter = LogLevel.Undefined; 

     CrashDumps.EnableCollection(true); 

     roleInstanceDiagnosticManager.SetCurrentConfiguration(config); 
    }