I am trying to configure log4net dynamically for writing log to sql database. For that I am using AdoNetAppender class from log4net library.
I see activateOptions for the appender but not for the Layout defined in Command Parameters
public override void ActivateOptions();
Calling AdoNetAppender.ActivateOptions() is writing logs to database but its writing same data to all columns, instead of writing to corresponding data to respective columns.
I figured this has to do with ActiveOptions on Layout, but I don't see ActivateOptions for Layout.
Any help is greatly appreciated.
For anyone facing this issue. Below fix did the trick:
public class CustomAdoNetAppender : AdoNetAppender
{
//code omitted for simplicity
//parameter using inherited layout
AddParameter(new AdoNetAppenderParameter()
{
ParameterName = "#thread",
DbType = System.Data.DbType.String,
Size = 255,
Layout = new CustomLayout2RawLayoutAdapter(new PatternLayout() { ConversionPattern = "%thread" })
});
}
private class CustomLayout2RawLayoutAdapter : Layout2RawLayoutAdapter
{
private readonly PatternLayout _layout;
public CustomLayout2RawLayoutAdapter(PatternLayout layout)
: base(layout)
{
_layout = layout;
}
public void ActivateOptions()
{
_layout.ActivateOptions();
}
}
public override void ActivateOptions()
{
base.ActivateOptions();
if (m_usePreparedCommand)
{
foreach (AdoNetAppenderParameter item in m_parameters)
{
if (item.Layout is CustomLayout2RawLayoutAdapter)
(item.Layout as CustomLayout2RawLayoutAdapter).ActivateOptions();
}
}
}
Related
I got a Java Webapplication that starts an asynchron server side "job".
The application creates a directory for each job and logs in a file in this directory.
My implementation with log4j is:
import org.apache.log4j.*;
public class ThreadLogger {
String sThreadName;
String sLogfilePath;
RollingFileAppender rfaJob;
PatternLayout plJobLog;
public ThreadLogger(){}
public void start(String sThreadId, String sLogfilePath){
this.sThreadName = sThreadId;
this.sLogfilePath = sLogfilePath;
// Create Logfilter and LogAppender for thread based logging
ThreadLoggingFilter ThreadLogFilter = new ThreadLoggingFilter(this.sThreadName);
plJobLog = new PatternLayout("[%x - %t][%d / %p / %c] - %m%n");
this.rfaJob = new RollingFileAppender();
this.rfaJob.setLayout(plJobLog);
this.rfaJob.setFile(sLogfilePath);
this.rfaJob.setEncoding("UTF-8");
this.rfaJob.activateOptions();
this.rfaJob.setMaxBackupIndex(9);
this.rfaJob.setMaxFileSize("10MB");
this.rfaJob.setThreshold(Level.ALL);
this.rfaJob.addFilter(ThreadLogFilter);
Logger.getRootLogger().addAppender(this.rfaJob);
}
public void stop(){
Logger.getRootLogger().removeAppender(this.rfaJob);
this.rfaJob.close();
}
}
and the ThreadLogginFilter is:
import org.apache.log4j.spi.*;
public class ThreadLoggingFilter extends Filter {
String threadName;
public ThreadLoggingFilter(String _threadName){
this.threadName = _threadName;
}
#Override
public int decide(final LoggingEvent event) {
if (event.getNDC() != null && event.getNDC().equals(this.threadName)) {
return ACCEPT;
}
return DENY;
}
}
No I want to implement this with log4j2 and don´t know how to do the filter.
I know the documentation on https://logging.apache.org/log4j/2.0/manual/filters.html but I cant find a way to do this.
Is it possible to do this without a configuration?
Update: The goal...
My webapplication starts threads. Every thread produces several files to a folder that will be send to the user at the end. Within the folder there has to be the log file. So every thread need his own appender with a foldername.
I want to convert an INFO log level to a WARN if the INFO log message contains an exception. Is there anyway I can accomplish this? (I am integrating log4net in a .NET application)
Unless you already wrap your logging calls, in which case you could intercept the messages before passing them to log4net, your best bet would be to create your own appenders which promote log events as appropriate. As each appender subclass would need the exact same code I've created an extension method which does the actual promotion:
public static class AppenderExtensions
{
public static LoggingEvent Promote(this LoggingEvent loggingEvent)
{
if (loggingEvent.Level != Level.Info
|| loggingEvent.ExceptionObject == null)
{
return loggingEvent;
}
var data = loggingEvent.GetLoggingEventData(FixFlags.All);
data.Level = Level.Warn;
return new LoggingEvent(data);
}
}
public class PromotingAdoNetAppender : AdoNetAppender
{
protected override void Append(LoggingEvent loggingEvent)
{
base.Append(loggingEvent.Promote());
}
}
public class PromotingRollingFileAppender : RollingFileAppender
{
protected override void Append(LoggingEvent loggingEvent)
{
base.Append(loggingEvent.Promote());
}
}
Then all you need to do is to declare these appender types in your config:
<appender name="DatabaseAppender"
type="Your.Namespace.Here.PromotingAdoNetAppender">
…
Since I have a global exception handler that reports uncaught errors via e-mail, next step is to add some context to it by having some 10-20 last lines of log that are collected.
So I am using MemoryTarget like so:
MemoryTarget _logTarget;
_logTarget = new MemoryTarget();
_logTarget.Layout = "${longdate}|${level:uppercase=true}|${logger}|${message}${exception}";
LoggingRule loggingRule = new LoggingRule("*", LogLevel.Debug, _logTarget);
LogManager.Configuration.AddTarget("exceptionMemory", _logTarget);
LogManager.Configuration.LoggingRules.Add(loggingRule);
LogManager.Configuration.Reload();
Apps containing this should run forever, and if I leave logs in memory, unchecked, I'll have neatly designed memory leak.
How to address this? How to truncate MemoryTarget.Logs to have at most say 100 lines?
Your best bet is probably to write your own MemoryTarget... Something like this (untested) should work.
namespace NLog.Targets
{
using System.Collections.Generic;
[Target("LimitedMemory")]
public sealed class LimitedMemoryTarget : TargetWithLayout
{
private Queue<string> logs = new Queue<string>();
public LimitedMemoryTarget()
{
this.Logs = new List<string>();
}
public IEnumerable<string> Logs
{
get { return logs; }
private set { logs = value; }
}
[DefaultValue(100)]
public int Limit { get; set; }
protected override void Write(LogEventInfo logEvent)
{
string msg = this.Layout.Render(logEvent);
logs.Enqueue(msg);
if (logs.Count > Limit)
{
logs.Dequeue();
}
}
}
}
This example is based on the NLog MemoryTarget, the source code for which you can find here:
https://github.com/NLog/NLog
NLog docs are here:
http://nlog-project.org/documentation/v2.0.1/
I didn't see anything like you are asking about in either location.
I am just following the code examples of a Beginning SilverLight book and here is part of the code about user controls and Dependeny Property that I have typed from the book into my IDE:
public class CoolDownButtonControl: Control
{
public static readonly DependencyProperty CoolDownSecondsProperty =
DependencyProperty.Register(
"CoolDownSeconds",
typeof(int),
typeof(CoolDownButtonControl),
new PropertyMetadata(
new PropertyChangedCallback(
CoolDownButtonControl.OnCoolDownSecondsPropertyChanged
)
)
);
public int CoolDownSeconds
{
get
{
return (int)GetValue(CoolDownSecondsProperty);
}
set
{
SetValue(CoolDownSecondsProperty, value);
}
}
private static void OnCoolDownSecondsPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CoolDownButtonControl cdBuutton = d as CoolDownButtonControl;
cdBuutton.OnCoolDownButtonChange(null);
}
}
The problem is that IDE highlights the line of cdBuutton.OnCoolDownButtonChange(null); complaining about
CoolDownButtonControl does not contain a definition for
OnCoolDownButtonChange
As I am new to this and hoping to learn it from this example I couldn't figure out what is wrong and how to fix it?
You should add that method too, something like this:
protected virtual void OnCoolDownButtonChange(RoutedEventArgs e)
{
}
I am writing a custom module that retrieves and pushes data directly from the Orchard DB using an injected IRepository.
This works fine until i need to update a content part. I add an update in my migrations class and the update runs through (DB schema updated with default values), however I can't update any of the new values through IRepository. I have to drop down into the NHibernate.ISession to flush the changes through.
This all works fine on a newly created recipe, it's only when i alter a part. Here are the key code snippets:
public class TranslationsPartRecord : ContentPartRecord
{
internal const string DefaultProductName = "Product";
public TranslationsPartRecord()
{
ProductName = DefaultProductName;
}
public virtual string ProductName { get; set; }
}
public class TranslationsPart : ContentPart<TranslationsPartRecord>
{
public string ProductName
{
get { return Record.ProductName; }
set { Record.ProductName = value; }
}
}
public class TranslationsHandler : ContentHandler
{
public TranslationsHandler(IRepository<TranslationsPartRecord> repository)
{
Filters.Add(StorageFilter.For(repository));
}
}
public class Migrations : DataMigrationImpl
{
public int Create()
{
SchemaBuilder.CreateTable("TranslationsPartRecord", table => table
.Column<int>("Id", column => column.PrimaryKey().Identity())
.Column("ProductName", DbType.String, column => column.NotNull().WithDefault(TranslationsPartRecord.DefaultProductName))
);
return 1;
}
public int UpdateFrom1()
{
SchemaBuilder.AlterTable("TranslationsPartRecord", table => table.AddColumn("ProductDescription", DbType.String, column => column.NotNull().WithDefault(TranslationsPartRecord.DefaultProductDescription)));
return 2;
}
}
When i add the second property "ProductDescription" in this example, after the update is run the columns appear in the DB but i cannot update them until i recreate the Orchard recipe (blat App_Data and start again).
here's how I am trying to update:
// ctor
public AdminController(IRepository<TranslationsPartRecord> translationsRepository)
{
_translationsRepository = translationsRepository;
}
[HttpPost]
public ActionResult Translations(TranslationsViewModel translationsViewModel)
{
var translations = _translationsRepository.Table.SingleOrDefault();
translations.ProductName = translationsViewModel.ProductName;
translations.ProductDescription = translationsViewModel.ProductDescription;
_translationsRepository.Update(translations);
_translationsRepository.Flush();
}
and here's the NHibernate "fix":
var session = _sessionLocator.For(typeof(TranslationsPartRecord));
var translations = _translationsRepository.Table.SingleOrDefault();
// is translations.Id always 1?
var dbTranslations = session.Get<TranslationsPartRecord>(translations.Id);
dbTranslations.ProductName = translationsViewModel.ProductName;
dbTranslations.ProductDescription = translationsViewModel.ProductDescription;
session.Update(dbTranslations);
session.Flush();
which seems a bit kludgey...
Cheers.
ps i'm still running Orchard 1.3.9
pps after more testing, the NHibernate fix has stopped working now, so perhaps my initial findings were a red herring. It seems as though new properties on the content part are totally ignored by NHibernate when updating/retrieving - as though the object definition is cached somewhere...
If your mappings aren't being updated that is strange. You can try to force it by deleting the mappings.bin in the app_data folder, and restarting the application. Orchard should recreate the nhibernate mappings and save as mappings.bin.
I have ran into the same issue, and the only way around it that I can find is to delete mappings.bin (I don't need to disable and re-enable the module). In fact, this is the answer that I got from Bertrand when I asked why this was happening.
I have logged this as an issue at http://orchard.codeplex.com/workitem/19306. If you could vote this up, then we may get it looked at quicker.
This seems like a similar issue to what I am seeing... I am seeing that when you enable a module, it runs the NHibernate mappings BEFORE running the Migrations..
https://orchard.codeplex.com/workitem/19603
Josh
Update the hash value in the ComputingHash method in the PersistenceConfiguration Class,
updating the hash value may recreate the mappings.bin file.
public class PersistenceConfiguration : ISessionConfigurationEvents
{
public void Created(FluentConfiguration cfg, AutoPersistenceModel defaultModel)
{
DoModelMapping(cfg, defaultModel);
}
public void ComputingHash(Hash hash)
{
hash.AddString("Some_strings_to_update_hash");
}
private void DoModelMapping(FluentConfiguration cfg, AutoPersistenceModel defaultModel)
{
// mappings here....
}
public void Prepared(FluentConfiguration cfg) { }
public void Building(Configuration cfg) { }
public void Finished(Configuration cfg) { }
}