.Net 核心日志记录到 PostgreSQL 与 Serilog 不工作

Question

我正在使用 Serilog 记录 Postgresql 数据库这是我的 Serilog 配置

1. 这是我的 appsettings.json -> {还尝试了不同的配置}

"Serilog": {
    "Using": [ "Serilog.Sinks.PostgreSQL.Configuration" ],
    "MinimumLevel": "Debug",
    "Enrich": [ "WithMachineName" ],
    "WriteTo": [
      {
        "Name": "PostgreSQL",
        "Args": {
          "connectionString": "my-connection-string",
          "tableName": "log",
          "needAutoCreateTable": true
        }
      }
    ]
  },

  "Columns": {
    "message": "RenderedMessageColumnWriter",
    "message_template": "MessageTemplateColumnWriter",
    "level": {
      "Name": "LevelColumnWriter",
      "Args": {
        "renderAsText": true,
        "dbType": "Varchar"
      }
    },
    "raise_date": "TimestampColumnWriter",
    "exception": "ExceptionColumnWriter",
    "properties": "LogEventSerializedColumnWriter",
    "props_test": {
      "Name": "PropertiesColumnWriter",
      "Args": { "dbType": "Json" }
    },
    "machine_name": {
      "Name": "SinglePropertyColumnWriter",
      "Args": {
        "propertyName": "MachineName",
        "writeMethod": "Raw"
      }
    }
  },

2. 这是 Program.cs

public class Program
    {
        public static void Main(string[] args)
        {
            var config = new ConfigurationBuilder()
                .AddJsonFile("appsettings.json")
                .Build();

            //Initialize Logger
            Log.Logger = new LoggerConfiguration()
                .ReadFrom.Configuration(config)
                .CreateLogger();
            try
            {
                Log.Information("Application Starting.");
                CreateHostBuilder(args).Build().Run();
            }
            catch (Exception ex)
            {
                Log.Fatal(ex, "The Application failed to start.");
            }
            finally
            {
                Log.CloseAndFlush();
            }
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .UseSerilog()
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });
    }

3. 这是 Controller

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using System.Threading.Tasks;

namespace MyApp
{
    [ApiController]
    public class AuthenticationController : ControllerBase
    {
        private readonly IAuthenticationService _authenticationService;
        private readonly ILogger<AuthenticationController> _logger;
        public AuthenticationController(
            IAuthenticationService authenticationService,
            ILogger<AuthenticationController> logger)
        {
            this._authenticationService = authenticationService;
            this._logger = logger;
        }

        [Route("test-log")]
        [HttpGet]
        public IActionResult LOG()
        {
            _logger.LogInformation("Hello World");
            return Ok();
        }
    }
}

启动后，表已创建，但没有记录。 还测试了 Serilog 日志记录是否比 Microsoft 但遇到了同样的问题。

Answer 1

不幸的是，Serilog.Sinks.PostgreSQL package 尚未更新以支持 Npgsql 5.0。 实际上他们仍在尝试针对 .NET 框架，但 Npgsql 5.0 仅支持 .NET 核心。

Github 上存在一个问题： https://github.com/b00ted/serilog-sinks-postgresql/issues/34

顺便说一句，您可以通过将其添加到启动配置中来调试 Serilog 问题：

        SelfLog.Enable(msg =>
        {
            Debug.Print(msg);
            Debugger.Break();
        });

Answer 2

我遇到了类似的情况，尽管我是通过 Program.cs 中的.WriteTo.PostgreSQL()在Program.cs中配置它。

就我而言，解决方案是将参数'useCopy'设置为false 。

例子：

...
.WriteTo.PostgreSQL(
  connectionString: configuration.GetConnectionString("LoggerConnection").ToString(),
  tableName: "yourtable",
  columnOptions: columnWriters,
  restrictedToMinimumLevel: LogEventLevel.Information,
  needAutoCreateTable: true,
  respectCase: true,
  useCopy: false // <-----------------
)
...

也许你可以尝试在你的 appsettings.json 配置中做同样的事情。