用于捕获 Azure Web 应用程序错误日志的脚本

Question

我想编写一个脚本来监视和捕获来自 Azure 网站的错误。为此，我想利用 azure 流式日志

Powershell 脚本。

function Stream-Log
{
 Get-AzureWebsiteLog -Name HiWebApiService -Tail
 }

 Stream-Log

如果我单独执行上面的脚本，它正在流式传输日志。

我想从 c# 客户端调用上面的脚本。

 class Program
{
    static void Main(string[] args)
    {
        PowerShell psinstance = PowerShell.Create();
        const string getverbose = "$verbosepreference='continue'";
        psinstance.AddScript(string.Format(getverbose));
        psinstance.Invoke();
        psinstance.Commands.Clear();

        var scriptPath = @"E:\Azure\LogMonitor\LogMonitor\LogMonitor.ps1";

        psinstance.AddScript(scriptPath);
        psinstance.Streams.Verbose.DataAdded += Verbose_DataAdded;
        psinstance.Streams.Information.DataAdded += Information_DataAdded;
        psinstance.Streams.Error.DataAdded += Error_DataAdded;
        var results = psinstance.Invoke();


        Console.ReadLine();
    }

    private static void Information_DataAdded(object sender, DataAddedEventArgs e)
    {
        var newRecord = ((PSDataCollection<InformationRecord>)sender)[e.Index];
        Console.WriteLine("information updated: {0}", newRecord.Source);
    }

    private static void Verbose_DataAdded(object sender, DataAddedEventArgs e)
    {
        var coll = (PSDataCollection<VerboseRecord>)sender;
        var newRecord = (coll)[e.Index];
        Console.WriteLine("verbose updated: {0}", newRecord.Message);
    }

    private static void Error_DataAdded(object sender, DataAddedEventArgs e)
    {
        ErrorRecord newRecord = ((PSDataCollection<ErrorRecord>)sender)[e.Index];
        Console.WriteLine("error updated: {0}", newRecord.ErrorDetails);

    }

出于某种原因，上述任何事件均未捕获 azure 流式日志的输出。

Answer 1

根据您的描述，我按照本教程 Executing PowerShell scripts from C# 在我这边测试了这个问题。我使用了您的代码并对其进行了修改，然后它可以按预期工作如下：

class Program
{
    static void Main(string[] args)
    {
        PowerShell psinstance = PowerShell.Create();

        psinstance.AddScript("Get-AzureWebsiteLog -Name brucewebapp -Tail");

        // prepare a new collection to store output stream objects
        PSDataCollection<PSObject> outputCollection = new PSDataCollection<PSObject>();
        outputCollection.DataAdded += (s,e)=> {
            var newRecord = ((PSDataCollection<PSObject>)s)[e.Index];
            Console.WriteLine(newRecord);
        };

        psinstance.Streams.Verbose.DataAdded += Verbose_DataAdded;
        psinstance.Streams.Information.DataAdded += Information_DataAdded;
        psinstance.Streams.Error.DataAdded += Error_DataAdded;
        psinstance.Invoke(null, outputCollection);

        Console.ReadLine();
    }

    private static void Information_DataAdded(object sender, DataAddedEventArgs e)
    {
        var newRecord = ((PSDataCollection<InformationRecord>)sender)[e.Index];
        Console.WriteLine("information updated: {0}", newRecord.Source);
    }

    private static void Verbose_DataAdded(object sender, DataAddedEventArgs e)
    {
        var coll = (PSDataCollection<VerboseRecord>)sender;
        var newRecord = (coll)[e.Index];
        Console.WriteLine("verbose updated: {0}", newRecord.Message);
    }

    private static void Error_DataAdded(object sender, DataAddedEventArgs e)
    {
        ErrorRecord errorRecord = ((PSDataCollection<ErrorRecord>)sender)[e.Index];
        Console.WriteLine("error updated: {0}", errorRecord.Exception.Message);

    }
}

用于捕获 Azure Web 应用程序错误日志的脚本

script for capturing Azure web application error logs

azure

azure-diagnostics

azure-powershell

azure-web-app-service