问题描述

我正在尝试将异常记录到 Application Insights.我通过直接调用 TelemetryClient.TrackException 成功地做到了这一点.但是，我想在我的代码中对此进行抽象，以防将来我想登录到其他平台，所以我只想坚持 ILogger 接口.

I'm trying to log exceptions to Application Insights. I succeeded in doing this by calling TelemetryClient.TrackException directly. However, I would like to abstract away from this in my code in case I'd want to log to other platforms in the future, so I would like to stick to only the ILogger interface.

我发现您可以使用 ILoggerFactory.AddApplicationInsights (已实现 here) 但无论我做什么，我都看不到 ApplicationInsights 中显示的日志.

I found that you can use ILoggerFactory.AddApplicationInsights (as implemented here) but no matter what I did, I don't see the logs showing up in ApplicationInsights with this.

下面是我的代码:

Startup.cs

    IConfigurationRoot Configuration { get; set; }
    ILoggerFactory LoggerFactory { get; set; }
    IServiceProvider ServiceProvider { get; set; }

    public Startup( IHostingEnvironment hostingEnvironment, ILoggerFactory loggerFactory )
    {
        this.LoggerFactory = loggerFactory;
        string configurationFilePath = "abc.json";

        this.Configuration = new ConfigurationBuilder()
            .SetBasePath( hostingEnvironment.ContentRootPath )
            .AddJsonFile( configurationFilePath, optional: true, reloadOnChange: true )
            .AddEnvironmentVariables()
            .Build();
    }

    public void Configure(
        IApplicationBuilder applicationBuilder,
        IHostingEnvironment hostingEnvironment,
        ILoggerFactory loggerFactory,
        IServiceProvider serviceProvider )
    {
        this.ServiceProvider = serviceProvider;
        loggerFactory.AddApplicationInsights( serviceProvider );
        applicationBuilder.UseMvc();
    }

    public void ConfigureServices( IServiceCollection services )
    {
        services.AddApplicationInsightsTelemetry( this.Configuration );
        services.AddMvc( .... // A bunch of options here ... )
    }

然后，我尝试像这样在我的控制器中使用它:

Then, I try to use this in my controller like this:

    ILogger<XController> Logger { get; set; }

    public XController( ILogger<XController> logger )
    {
        this.Logger = logger;
    }

    [HttpPost]
    [Route( "v3.0/abcd" )]
    public async Task PostEvent( [FromBody] XEvent xEvent )
    {
        this.Logger.LogError( 0, new Exception( "1234" ), "1234" );
    }

但是，我根本没有看到与该请求相关的任何异常.如果我用 TelemetryClient.TrackException 替换 Logger.LogError 行(并首先创建 TelemetryClient)，那么我可以看到异常没有任何问题.

However, I don't see any exceptions associated with the request at all. If I replace the Logger.LogError line with TelemetryClient.TrackException (and create the TelemetryClient first), then I can see the exception without any issues.

我不知道我做错了什么.有人可以帮忙吗?

I don't know what I'm doing wrong. Could anyone help?

推荐答案

我终于想通了.有两种方法可以解决我的问题:

I finally figured out. There are two ways to solve my issue:

简单的方法:

我使用的是旧版本的 Application Insights NuGet.具体来说，Microsoft.ApplicationInsights.2.2.0 和 Microsoft.ApplicationInsights.AspNetCore.2.0.0.

I was using older versions of the Application Insights NuGets. Specifically, Microsoft.ApplicationInsights.2.2.0 and Microsoft.ApplicationInsights.AspNetCore.2.0.0.

一旦我升级到Microsoft.ApplicationInsights.2.4.0 和 Microsoft.ApplicationInsights.AspNetCore.2.1.1，一切正常.您还可以看到 LogXXX 有一个异常作为参数显示为 Exception，而一个没有异常的参数显示为 Trace.

Once I upgrade to Microsoft.ApplicationInsights.2.4.0 and Microsoft.ApplicationInsights.AspNetCore.2.1.1, everything works as expected. You also see the LogXXX with an exception as an argument showing up as Exception, and one without an exception showing up as Trace as expected.

稍微困难的方法:

由于某种原因，Configure 中的 IApplicationBuilder 和 IServiceProvider 没有提供在 AddApplicationInsights，所以需要在ConfigureServices中添加provider:

    public void ConfigureServices( IServiceCollection services )
    {
            IServiceProvider serviceProvider = services.BuildServiceProvider();
            this.LoggerFactory.AddApplicationInsights( serviceProvider, Extensions.Logging.LogLevel.Information );
            ...
    }