NET核心.使用Serilog时，日志未发送到Loggly

Question

我有一个小ASP。NET Core 3.1项目，该项目应该执行Odata请求，然后将信息或异常记录到Loggly中。我正在使用Serilog。

但由于某种原因，它只发送来自Program.cs的第一条消息(Log.Debug($"DEBUG: Starting at:{DateTime.Now}");(，但不发送其他任何消息。虽然它对控制台或文件日志记录很好。我试图伪造一个异常来触发错误日志记录。但什么都不起作用(在Loggly(。

关于为什么会这样以及如何使其正常工作，有什么建议吗？

这是我的代码：

程序.cs:

public class Program
{
public static void Main(string[] args)
{
var configuration = new ConfigurationBuilder()
.AddJsonFile("appsettings.json")
.Build();
Log.Logger = new LoggerConfiguration()
.ReadFrom.Configuration(configuration)
.CreateLogger();
try
{
Log.Debug($"DEBUG: Starting at:{DateTime.Now}");
CreateHostBuilder(args).Build().Run();
Log.Debug($"DEBUG: Host created");
}
catch (Exception ex)
{
Log.Error("Oops something failed!");
throw new Exception(ex.Message);
}
finally
{
Log.CloseAndFlush();
}
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
})
.UseSerilog();
}

Startup.cs:

public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
services.AddDbContext<OdataTestObjectContext>(options =>
{
options.UseSqlServer(Configuration["ConnectionStrings:Database"]);
});
services.AddControllers().AddOData(opt =>
opt.Filter().Expand().Select().OrderBy().Count().SetMaxTop(100)
.AddRouteComponents("odata", GetEdmModel()));
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new OpenApiInfo { Title = "OdataTest", Version = "v1" });
c.ResolveConflictingActions(apiDescriptions => apiDescriptions.First());
});
var appSettings = new ConfigurationBuilder().AddJsonFile("appsettings.json").Build(); 
var serilogConfig = new LoggerConfiguration().ReadFrom.Configuration(appSettings);  
services.AddLogging(loggingBuilder => loggingBuilder.AddSerilog(serilogConfig.CreateLogger(), true)); 
services.AddMvc(opts => { opts.Filters.Add(new AutoLogAttribute()); });
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
app.UseSwagger(c =>
{
c.RouteTemplate = "/swagger/{documentName}/swagger.json";
});
app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "OdataTest v1"));
}
app.UseHttpsRedirection();
////Send "~/$odata" to debug routing if enable the following middleware
app.UseODataRouteDebug();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
private static IEdmModel GetEdmModel()
{
var builder = new ODataConventionModelBuilder();
var entitySet = builder.EntitySet<TestObject>("TestObjects");
entitySet.EntityType.HasKey(entity => entity.Id);
return builder.GetEdmModel();
}
}

Controller.cs

[ApiController]
[Route("OData")]
public class TestController : ODataController
{
private readonly OdataTestObjectContext _context;
private readonly ILogger<TestController> _logger;
public TestController(ILogger<TestController> logger, OdataTestObjectContext context)
{
_context = context;
_logger = logger;
}
[ApiExplorerSettings(IgnoreApi = true)]
[EnableQuery]
public IActionResult Get()
{
try
{
return Ok(_context.TestObjects);
}
catch (Exception ex)
{
_logger.LogError("Error happened for Default query! - {0}", ex.Message);
throw new InvalidOperationException(ex.Message);
}
}
[HttpGet("Top({top})")]
[EnableQuery]
public IEnumerable<TestObject> GetTop(int top)
{
return _context.TestObjects.OrderByDescending(x => x.Id).Take(top);
}
[HttpGet("Enumerable")]
[EnableQuery]
public IEnumerable<TestObject> Enumerable()
{         
try
{
_logger.LogDebug("Executing ENUMERABLE now.");
//string a = "asd";
//int s = Convert.ToInt32(a);
var results = _context.SaleInvoicesAndProducts.AsEnumerable();
int z = 1;
if (results.Any())
z = 0;
int i = 10 / z;
return results;
}
catch (Exception ex)
{
_logger.LogError("Error happened for Enumerable query! - {0}", ex.Message);
throw new Exception();
}
}

AutoLogAttribute.cs(这只是输出带有一些请求参数的日志(：

public class AutoLogAttribute : TypeFilterAttribute
{
public AutoLogAttribute() : base(typeof(AutoLogActionFilterImpl))
{
}
private class AutoLogActionFilterImpl : IActionFilter
{
private readonly ILogger<AutoLogAttribute> _logger;
public AutoLogActionFilterImpl(ILoggerFactory loggerFactory)
{
_logger = loggerFactory.CreateLogger<AutoLogAttribute>();
}
public void OnActionExecuting(ActionExecutingContext context)
{
// perform some business logic work
_logger.LogInformation($"queryString: {context.HttpContext.Request.QueryString}");
_logger.LogDebug($"queryString (Debug): {context.HttpContext.Request.QueryString}");
}
public void OnActionExecuted(ActionExecutedContext context)
{
//TODO: log body content and response as well
_logger.LogInformation($"host: {context.HttpContext.Request.Host}");
_logger.LogInformation($"patheAndQuery: {context.HttpContext.Request.GetEncodedPathAndQuery()}");
_logger.LogDebug($"path (Debug): {context.HttpContext.Request.Path}");
_logger.LogDebug($"host (Debug): {context.HttpContext.Request.Host}");
_logger.LogDebug($"patheAndQuery (Debug): {context.HttpContext.Request.GetEncodedPathAndQuery()}");
}
}
}

appsetting.json

{
"Serilog": {
"Using": [ "Serilog.Sinks.Console", "Serilog.Sinks.File", "Serilog.Sinks.Loggly" ],
"MinimumLevel": {
"Default": "Debug",
"Override": {
"Microsoft": "Debug",
"System": "Debug"
}
},
"Enrich": [ "FromLogContext", "WithMachineName", "WithProcessId", "WithThreadId" ],
"WriteTo": [
{ "Name": "Console" },
{
"Name": "File",
"Args": { "path": "C:\ODATA\log.json" }
},
{
"Name": "Loggly",
"Args": {
"customerToken": "mytoken",
"tags": "mytest"
}
}
],
},
"ConnectionStrings": {
"Database": "Server=(localdb)\MSSQLLocalDB;Initial Catalog=MyTestDB;Integrated Security=true;MultiSubnetFailover=True;MultipleActiveResultSets=True;"
},
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
}
},
"AllowedHosts": "*"

}

Answer 1

您可以尝试清除提供程序：

Host
****
.ConfigureLogging(logging =>
{
logging.ClearProviders();
})
.UseSerilog();

此外，如果您已经配置了登录主机，则不需要将额外的配置放入Startup.cs