Моя цель - добавить значения из appsettings.json в файл nlog.config для основного приложения ASP.NET. Я использую NLog.Web.AspNetCore 4.8.3, NLog 4.6.5, NLog.config 4.6.5 и Microsoft.Extensions.Logging.Abstractions 2.0.0.
Я не смог заставить это работать. У меня сложилось впечатление, что $ {configsetting: name = ConnectionStrings.ApplicationDatabase} будет заменено значением ConnectionStrings.ApplicationDatabase внутри моего файла appsettings.json, но это не работает. Значение переменной nlog.config не изменяется и выдает ошибку при запуске приложения, поскольку это недопустимая строка подключения.
Фрагмент nlog.config
<!-- Using logDirectory variable to set path to src/logs folder in allfile and ownFile-web targets below -->
<variable name="logDirectory" value="${basedir}/../../../logs/${shortdate}/internal-nlog.log" />
<variable name="logDatabase" value="${configsetting:name=ConnectionStrings.ApplicationDatabase}"/>
<variable name="logDatabaseUser" value="${configsetting:name=DatabaseCredentials.User}"/>
<variable name="logDatabasePassword" value="${configsetting:name=DatabaseCredentials.Password}"/>-->
<variable name="logConnectionString" value="mongodb://${logDatabaseUser}:${logDatabasePassword}@${logDatabase}/myApplicationDB?authSource=admin"/>
<!-- Load the ASP.NET Core plugin -->
<extensions>
<add assembly="NLog.Web.AspNetCore" />
<add assembly="NLog.Mongo" />
</extensions>
<!-- the targets to write to -->
<targets>
<!-- write logs to file -->
<target xsi:type="File" name="allfile" fileName="${logDirectory}"
layout="${longdate}|${event-properties:item=EventId.Id}|${logger}|${uppercase:${level}}|${message} ${exception}" />
<!-- another file log, only own logs. Uses some ASP.NET core renderers -->
<target xsi:type="File" name="ownFile-web" fileName="${logDirectory}"
layout="${longdate}|${event-properties:item=EventId.Id}|${logger}|${uppercase:${level}}| ${message} ${exception}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" />
<target xsi:type="Mongo" name="error-mongo"
connectionString="${logConnectionString}"
collectionName="errorLogs">
<field name="date" layout="${date}" bsonType="DateTime" />
<field name="level" layout="${level}" />
<field name="message" layout="${message}" />
<field name="logger" layout="${logger}" />
<field name="exception" layout="${exception:format=tostring}" />
<field name="threadID" layout="${threadid}" bsonType="Int32" />
<field name="threadName" layout="${threadname}" />
<field name="processID" layout="${processid}" bsonType="Int32" />
<field name="processName" layout="${processname:fullName=true}" />
<field name="userName" layout="${windows-identity}" />
</target>
<target xsi:type="Mongo" name="event-mongo"
connectionString="${logConnectionString}"
collectionName="eventLogs">
<field name="date" layout="${date}" bsonType="DateTime" />
<field name="level" layout="${level}" />
<field name="event" layout="${event-properties:item=EventId.Id}" />
<field name="message" layout="${message}" />
<field name="logger" layout="${logger}" />
</target>
</targets>
Фрагмент appsetting.json
"ConnectionStrings": {
"ApplicationDatabase": "App-db-server-1.com:27017,App-db-server-2.com:27017,App-db-server-3.com:27017/AccessManagement?ssl=true&replicaSet=myReplicaSet&authSource=admin"
},
"DatabaseCredentials": {
"User": "",
"Password": ""
}
}
Фрагмент файла startup.cs
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
if (env.IsDevelopment())
app.UseDeveloperExceptionPage();
ConfigureNLog(app, loggerFactory);
/*These settings need to be changed*/
app.UseCors(
options => options
.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader()
);
app.UseAuthentication();
//Swagger Set Up
app.UseSwagger();
app.UseSwaggerUI(c =>
{
c.SwaggerEndpoint("/swagger/v1/swagger.json", "Authentication API V1");
});
app.UseMvc();
}
private static void ConfigureNLog(IApplicationBuilder app, ILoggerFactory loggerFactory)
{
IConfigurationRoot config = new ConfigurationBuilder()
.AddJsonFile(path: "appSettings.json").Build();
NLog.Extensions.Logging.ConfigSettingLayoutRenderer.DefaultConfiguration = config;
}
** Фрагмент Program.cs
public class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args)
{
return WebHost.CreateDefaultBuilder(args)
.UseStartup<Startup>()
.ConfigureLogging(logging =>
{
logging.ClearProviders();
logging.SetMinimumLevel(Microsoft.Extensions.Logging.LogLevel.Trace);
})
.UseNLog()
.Build();
}
}