I have the following target in nlog.config file
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true">
<extensions>
<add assembly="NLog.Web.AspNetCore"/>
</extensions>
<targets>
<target name="dbTarget"
xsi:type="Database"
connectionString="Server=SERVER;Database=Log;Trusted_Connection=True;"
commandText="INSERT INTO Logs(LogTime, LogLevel, Message) VALUES (#LogTime, #LogLevel, #Message);">
<!-- Parameters to log -->
<parameter name="#LogTime" layout="${longdate}"/>
<parameter name="#LogLevel" layout="${level}"/>
<parameter name="#Message" layout="${message}"/>
</target>
</targets>
<rules>
<logger name="dbLogger" minlevel="Trace" writeTo="dbTarget" />
</rules>
</nlog>
In code I get my logger like this.
var logger = NLogBuilder.ConfigureNLog("nlog.config").GetLogger("dbLogger");
But it doesn't work. If I add a file rule, the it logs to the file, so my guess is my dbTarget config is wrong.
Try to include a dbProvider attribute in you target tag. Set the dbProvider attribute with the right value which fits to your database. You can find the values here: https://github.com/nlog/NLog/wiki/Database-target#connection-options
Try modifying the connection string:
connectionString="Data Source=SERVER;Initial Catalog=Log;Integrated Security=True;"
dbProvider="System.Data.SqlClient"
Did you try remove the last ";" from the commandText:
<target name="dbTarget"
xsi:type="Database"
connectionString="Server=SERVER;Database=Log;Trusted_Connection=True;"
commandText="INSERT INTO Logs(LogTime, LogLevel, Message) VALUES (#LogTime, #LogLevel, #Message)">
Related
ASP.NET CORE Using NLog
I have some trouble , it doesn't delete old logs file.
"MaxArchiveFiles" and "maxArchiveDays" did not execute the action of deleting logs properly.
What I do wrong?
Thanks!
<?xml version="1.0" encoding="utf-8" ?>
<nlog
xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
internalLogLevel="info"
internalLogFile="C:\Logs\testProject\nlog-internal.txt">
<extensions>
<add assembly="NLog.Web.AspNetCore"/>
</extensions>
<targets>
<!-- write logs to file -->
<target xsi:type="File" name="ALL"
fileName="C:\Logs\testProject\testProject.${cached:${date:format=yyyy-MM-dd}}.log"
layout="${longdate}|${uppercase:${level}}|${threadid}|${logger}|${message} ${exception:format=ToString}"
maxArchiveFiles="20"
archiveFileName="C:\Logs\testProject\testProject{#}.log"
archiveDateFormat="yyyy-MM-dd"
archiveAboveSize="104857600"
archiveNumbering="DateAndSequence"
maxArchiveDays="3"
archiveEvery="Day"
/>
</targets>
<rules>
<logger name="*" minlevel="Trace" writeTo="ALL" />
</rules>
</nlog>
Current files (files from today) are not part of archive when using MaxArchiveDays. So maxArchiveDays="1" will only clean files older than yesterday.
You could consider removing archiveFileName and archiveDateFormat and archiveNumbering, so it becomes this:
<target xsi:type="File" name="ALL"
fileName="C:\Logs\testProject\testProject.${cached:${date:format=yyyy-MM-dd}}.log"
layout="${longdate}|${uppercase:${level}}|${threadid}|${logger}|${message} ${exception:format=ToString}"
maxArchiveFiles="100"
archiveAboveSize="10485760"
maxArchiveDays="1"
/>
I am working on .Net Core 2.2 and MySQL.
General log of application are logged into Database using NLog but I want to log only DB errors (If occurs while logging) to the file.
How I can capture DB connection failure to the file with custom fields like UserID.?
Here's the code of NLog.config:
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
throwExceptions="false"
internalLogLevel="Warn"
internalLogFile="D:\logs\New\internal-nlog.txt">
<targets>
<target name="database" xsi:type="Database"
dbProvider="MySql.Data.MySqlClient.MySqlConnection, MySql.Data"
connectionString="${var:myConnectionstring}">
<commandText>
insert into log (
Logged, Message,
CallSite, Exception, userID
) values (
#Logged, #Message,
#Callsite, #Exception, #userID
);
</commandText>
<parameter name="#logged" layout="${date}" />
<parameter name="#message" layout="${message}" />
<parameter name="#callSite" layout="${event-properties:Callsite}" />
<parameter name="#exception" layout="${exception:tostring}" />
<parameter name="#userID" layout="${event-properties:userID}" />
</target>
</targets>
<rules>
<logger name="*" level="Error" writeTo="database" />
</rules>
</nlog>
In .Net core I had written this:
Logger logger = LogManager.GetCurrentClassLogger();
LogManager.Configuration.Variables["myConnectionstring"]=Setting.connString;
LogManager.ReconfigExistingLoggers();
logger.SetProperty("userID", "UR0001");
logger.SetProperty("Callsite", ex.Error.TargetSite.Name);
logger.LogException(NLog.LogLevel.Error, ex.Error.Message,ex.Error);
In my ASP.NET MVC project I have below config in Web.config as below:
<configSections>
<section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog" />
</configSections>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<targets>
<target name="default" xsi:type="File" fileName="logs/app-log.txt" layout="
--------------------- ${level} (${longdate}) ----------------------$
IP: ${aspnet-request-ip}
Call Site: ${callsite}
${level} message: ${message}"/> archiveFileName="logs/archives/app-log.{#}.txt" archiveEvery="Day" archiveNumbering="Rolling" maxArchiveFiles="7" />
</targets>
<rules>
<logger name="*" writeTo="default" />
</rules>
</nlog>
If my log message is in Persian text then in log file I have question mark as ????? instead of the Persian text.
How can I fix this problem? Any help will be appreciated!
I added encoding="UTF8" attribute in target element
for example:
<target name="FileLogger" xsi:type="File" encoding="UTF8" layout="....">
As #ramesh pointed out tru using Encoding="utf-16" and also try writeBom="true".
The nlog documentation of this file target is https://github.com/NLog/NLog/wiki/File-target and it might give you some more help.
I'm working on a C# class library project that is using NLog. NLog is logging to a database. I've set up a console app test project to call the library (the console app has no logging). I have a column in the log table to store the user name of the logged in user running the application.
According to NLog's documentation, that value is stored in either the ${identity} or ${windows-identity} layout renderers. I've tried using both, but when the log writes to the database, the value of the UserName column is notauth::. How can I fix this? My nlog.config file is below.
<?xml version="1.0"
encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
autoReload="true"
throwExceptions="false"
internalLogLevel="Off"
internalLogFile="c:\temp\nlog-internal.log"
throwConfigExceptions="true">
<targets>
<target name="db"
xsi:type="Database"
connectionString="Server=ServerName;Database=DatabaseName;Integrated Security=True;">
<commandText>
INSERT INTO Logs.TableName
(
[Level]
, UserName
, CallSite
, [Message]
, Exception
, StackTrace
, Logged
)
VALUES
(
#level
, #userName
, #callSite
, #message
, #exception
, #stackTrace
, #logged
)
</commandText>
<parameter name="#level" layout="${level}" />
<parameter name="#userName" layout="${identity}" />
<parameter name="#callSite" layout="${callsite}" />
<parameter name="#message" layout="${message}" />
<parameter name="#exception" layout="${exception:tostring}" />
<parameter name="#stackTrace" layout="${stacktrace}" />
<parameter name="#logged" layout="${date}" />
</target>
</targets>
<rules>
<logger name="*" minlevel="Debug" writeTo="db" />
</rules>
</nlog>
I think there is something strange in you project. I made a small repo and have the following results:
${identity} shows indeed notauth::, that's correct as I don't authenticate to something - we use this for IIS with forms or windows authentication.
${windows-identity} shows COFFEE-LAKE\Julian - which is correct. "COFFEE-LAKE" is my machine name and Julian is also correct :) note - ${windows-identity} will never render notauth:: - I checked NLog's source
See repo here: https://github.com/304NotModified/nlog-console-notauth
When running, there is a "test1.log" in your "bin/Debug" folder.
note: it has the following config:
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
autoReload="true"
throwExceptions="false"
internalLogLevel="Off" internalLogFile="c:\temp\nlog-internal.log">
<targets>
<target xsi:type="File" name="f"
fileName="${basedir}/test1.log"
layout="${longdate}|${level:uppercase=true}|${logger}|${message}|identity: '${identity}' | windows-identity: '${windows-identity}'" />
</targets>
<rules>
<logger name="*" minlevel="Debug" writeTo="f" />
</rules>
</nlog>
I'm trying to get NLog to write to a database, however with my current code it throws an exception when I attempt to debug, the exception is: The type initializer for 'NotifyIcon.Program' threw an exception.
my NLog configuration file code is below, as this seems to be causing the issue as it's the only code I've changed.
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true">
<!--
See http://nlog-project.org/wiki/Configuration_file
for information on customizing logging rules and outputs.
-->
<targets>
<!-- add your targets here -->
<target name="database" xsi:type="Database" />
<target xsi:type="Database"
name="String"
dbUserName="Layout"
dbProvider="sqlserver"
useTransactions="false"
connectionStringName="String"
connectionString="Data Source=AC-02\SQLEXPRESS;Initial Catalog=master;Integrated Security=True"
keepConnection="true"
dbDatabase="Layout"
dbPassword="Layout"
dbHost="Layout"
installConnectionString="Layout"
commandText="INSERT INTO Logs (Machine_Name, Username, Logon_Time, Screensaver_On, Screensaver_Off, Logoff_Time, Program_Start) Values #MachineName, #Username, #LogonTime, #Screensaver_On, #Screensaver_Off, #LogoffTime, #ProgramStart "/>
</targets>
<rules>
<logger name="*" minlevel="Trace" writeTo="database" />
</rules>
</nlog>
any and all help would be greatly appreciated =]
You seem to be missing the parameters that are to be inserted.
See the examples at http://justinpdavis.blogspot.com/2010/04/logging-to-database-with-nlog.html
The nLog web page doesn't make it very clear that these are required, but if you squint your eyes and read https://github.com/nlog/NLog/wiki/Database-target you should find that they are required.
A simple example,
Config:
<target type="Database" name="database" connectionstring="Server=localhost;Database=NLog;Trusted_Connection=True;">
<commandText>
INSERT INTO NLogEntries ([Origin], [Message], [LogLevel],[CreatedOn],[OrderId]) VALUES (#Origin,#Message,#LogLevel,#Date, #OrderId);
</commandText>
<parameter name="#Date" layout="${date}" dbType="DbType.Date"/>
<parameter name="#Origin" layout="${callsite}"/>
<parameter name="#LogLevel" layout="${level}"/>
<parameter name="#message" layout="${message}"/>
<parameter name="#OrderId" layout="${event-properties:MyOrderId}" dbType="DbType.Int32"/> <!-- custom field! Note also the DB Type. Using Logger.WithProperty -->
</target>
Note, NLog 4.6 has also support for DbType - See https://nlog-project.org/2019/03/20/nlog-4-6-is-live.html
U also wrote 2 targets. And also a lot of attributes that u don't need to set. Should just be:
<target name="DbLog" xsi:type="Database" connectionString="YourConStr"
commandText="insert into [blablablabal] (Col1) values (#val1)">
<parameter name="#val1" layout="${level}" /></target>
Something like this. Easy no? :)
It looks your insert string is not in the right format? You are missing () around the parameters list.
commandText="INSERT INTO Logs (Machine_Name, Username, Logon_Time, Screensaver_On, Screensaver_Off, Logoff_Time, Program_Start) Values (#MachineName, #Username, #LogonTime, #Screensaver_On, #Screensaver_Off, #LogoffTime, #ProgramStart) "