[英]How to get Serilog to use custom enricher from json config file
我希望在我的 Serilog output 中使用格式化的 UTC 時間戳。 我編寫了一個自定義濃縮器,當從 C# 代碼調用時,它可以正常工作。
public class UtcTimestampEnricher : ILogEventEnricher
{
public void Enrich(LogEvent logEvent, ILogEventPropertyFactory pf)
{
logEvent.AddPropertyIfAbsent(pf.CreateProperty("UtcTimestamp", logEvent.Timestamp.UtcDateTime));
}
}
....
var loggerConfig = new LoggerConfiguration().MinimumLevel.Debug()
.Enrich.FromLogContext()
.Enrich.With(new UtcTimestampEnricher())
.Filter
.ByIncludingOnly( expr) // need this .Filter to ensure that
// Serilog.Filters.Expressions.dll gets loaded, else filters in config file get ignored
.WriteTo.Console(
outputTemplate: "[{UtcTimestamp:HH:mm:ss.fff} {Level:u3} {Subsystem}] {Message:lj}{NewLine}{Exception}",
restrictedToMinimumLevel: LogEventLevel.Information);
Log.Logger = loggerConfig.CreateLogger();
現在我希望在從我的自定義 json 配置文件配置記錄器時使用 utcTimestamp 豐富器。
var jsonLogconfiguration = new ConfigurationBuilder()
.AddJsonFile(logconfigFname)
.Build();
Log.Logger = new LoggerConfiguration()
.ReadFrom.Configuration(jsonLogconfiguration)
.CreateLogger();
我的 json 配置文件
{
"Serilog": {
"Using": [
"Serilog.Sinks.Console"
],
"MinimumLevel": "Debug",
"WriteTo": [
{
"Name": "Console",
"Args": {
"outputTemplate": "{UtcTimestamp:yyyy,MM,dd,HH,mm,ss,fff },{Level:u3},{Subsystem},{Message:lj}{NewLine}{Exception}"
}
}
],
"Enrich": [ "FromLogContext" , "UtcTimestampEnricher"],
"Filter": [
{
"Name": "ByIncludingOnly",
"Args": {
"expression": "Subsystem = 'Config' or Subsystem = 'Admin' "
}
}
]
}
}
我在控制台上收到的消息:(我之前調用了 serilog selflog 來獲取關於自身的 serilog 調試消息)
Serilog.Debugging.SelfLog.Enable(msg => Console.WriteLine(msg));
Serilog 調試 output。
2020-06-05T09:34:01.3898891Z Unable to find a method called UtcTimestampEnricher. Candidate methods are:
Serilog.LoggerConfiguration When(Serilog.Configuration.LoggerEnrichmentConfiguration, System.String, System.Action`1[Serilog.Configuration.LoggerEnrichmentConfiguration])
Serilog.LoggerConfiguration With(Serilog.Configuration.LoggerEnrichmentConfiguration, Serilog.Core.ILogEventEnricher)
Serilog.LoggerConfiguration FromLogContext(Serilog.Configuration.LoggerEnrichmentConfiguration)
當我嘗試使用時,我得到了類似的 output
"Enrich": [ "FromLogContext" , "UtcTimestamp"],
即使問題已經解決,我也想分享我關於這個問題的 2 美分。
每當您創建自定義Enricher
時,您有兩個選擇如何注冊它:
public class UtcTimestampEnricher : ILogEventEnricher
{
public void Enrich(LogEvent logEvent, ILogEventPropertyFactory pf)
{
...
}
}
Log.Logger = new LoggerConfiguration()
.Enrich.With<UtcTimestampEnricher>()
.CreateLogger()
public class UtcTimestampEnricher : ILogEventEnricher
{
public void Enrich(LogEvent logEvent, ILogEventPropertyFactory pf)
{
...
}
}
public static class LoggingExtensions
{
public static LoggerConfiguration WithUtcTimestamp(
this LoggerEnrichmentConfiguration enrich)
{
if (enrich == null)
throw new ArgumentNullException(nameof(enrich));
return enrich.With<UtcTimestampEnricher>();
}
}
{
"Serilog": {
...,
"Using": [ "Your.Assembly.Name" ],
"Enrich": [ "FromLogContext", "WithUtcTimestamp" ]
},
因此,正如您所看到的,在基於配置的設置的情況下,您需要注冊的是注冊幫助器方法(而不是豐富器本身)。
我終於想通了,並且可以通過在 C# 代碼中指定自定義濃縮器來工作
var jsonLogconfiguration = new ConfigurationBuilder()
.AddJsonFile(logconfigFname)
.Build();
Log.Logger = new LoggerConfiguration()
.Enrich.With(new UtcTimestampEnricher()) // is necessary
.ReadFrom.Configuration(jsonLogconfiguration)
.CreateLogger()
並從配置文件中刪除豐富
"Enrich": [ "FromLogContext" ],
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