.Net Core 使用 TagProvider 与 Enricher 丰富日志的操作代码

public class NetWorkInfo
{
    public string IPAddress { get; set; }
    public int Port { get; set; }
}

internal static class NetWorkInfoTagProvider
{
    //  Has the required signature 'void RecordTags(ITagCollector, T)'
    public static void RecordTags(ITagCollector collector, NetWorkInfo network)
    {
        // You can add aribrtrary objects to be logged. 
        // You provide a key (first arg) and a value.
        collector.Add(nameof(NetWorkInfo.IPAddress), network.IPAddress);
    }
}

public static partial class Log
{
    [LoggerMessage(
        EventId = 0,
        Level = LogLevel.Error,
        Message = "Can not open SQL connection {err}")]
    public static partial void CouldNotOpenConnection(this ILogger logger, string err,
        [TagProvider(typeof(NetWorkInfoTagProvider), nameof(NetWorkInfoTagProvider.RecordTags))] NetWorkInfo netWork);
}

private static async Task Main(string[] args)
{
    using ILoggerFactory loggerFactory = LoggerFactory.Create(
        builder =>
        builder.AddJsonConsole(
            options =>
            options.JsonWriterOptions = new JsonWriterOptions()
            {
                Indented = true
            }));
    ILogger logger = loggerFactory.CreateLogger("Program");
    logger.CouldNotOpenConnection("network err", new NetWorkInfo { IPAddress = "123.1.1", Port = 7777 });
}

builder.Logging.AddJsonConsole(options =>
    options.JsonWriterOptions = new JsonWriterOptions()
    {
        Indented = true
    }
);
builder.Logging.EnableEnrichment(); // Enable log enrichment
builder.Services.AddProcessLogEnricher(x =>
{
    x.ProcessId = true; // Add the process ID (true by default)
    x.ThreadId = true; // Add the managed thread ID (false by default)
});

builder.Services.AddServiceLogEnricher(options =>
{
    options.ApplicationName = true; // Choose which values to add to the logs
    options.BuildVersion = true;
    options.DeploymentRing = true;
    options.EnvironmentName = true;
});
builder.Services.AddApplicationMetadata(x =>
{
    x.ApplicationName = "My App";
    x.BuildVersion = "1.2.3";
    x.EnvironmentName = "Development";
    x.DeploymentRing = "test";
});

internal class MachineNameEnricher : IStaticLogEnricher
{
    public void Enrich(IEnrichmentTagCollector collector)
    {
        collector.Add("MachineName", Environment.MachineName);
    }
}
internal class UserIdEnricher : ILogEnricher
{
    public void Enrich(IEnrichmentTagCollector collector)
    {
        collector.Add("UserId", Guid.NewGuid().ToString());
    }
}
builder.Logging.EnableEnrichment(); // Enable log enrichment
builder.Services.AddStaticLogEnricher();
builder.Services.AddLogEnricher();