Hello,
I am using serilog with .netcore31.
I am trying to use different webhostbuilders inside the application to form separate pipelines for different routes/branch.
I would like to have separate logging configuration for each pipeline (branch).
I tried to use UseSerilog but with that I just get latest configuration set using UseSerilog applied to all branches.
So I tried to use AddSeriLog method by supplying externally created logger as parameter to each branch.
The mechanism works well however its very slow.
Do you have any suggestion how to solve the problem?
\n seems to cause logs to be emitted on a single line separated by \n, instead of new line separated events. Is this expected? I wanted to separate my expression on multiple lines to make it easy to read, but it broke our log shipper :D
\n makes it work
I've already have implemented saving logs into daily created 'log-date' files.
And from specific Service I need to write for specific file like 'service-date-info'
How can I do that with Serilog?
I need made some changes in Configuration?
or create separate Logger for it?
Could you please help me?=)
Question/Advice please - LoggingLevelSwitch & Current Min LogLevel 💬
I have a LoggingLevelSwitch that gets changed at runtime when the user wants to temporally change the Min LogLevel to help collect more logs as needed, which works just great and more Verbose/Debug messages get collected from the initial config being set to Info from appsettings.json
However I have a piece of code that is used to help display the Logger Minimum LogLevel in the UI which after changing the LoggingLevelSwitch now reports incorrectly.
public string GetLogLevel()
{
var logLevel = Enum.GetValues(typeof(LogEventLevel)).Cast<LogEventLevel>().Where(_serilogLog.IsEnabled).DefaultIfEmpty(LogEventLevel.Information)?.Min() ?? null;
return logLevel?.ToString() ?? "";
}
1 reply
hello! i'm having some issues using serilog while running a background task in an uwp app.
I'm using appsettings to configure, but no log is being done.
"Serilog": {
"WriteTo": [
{
"Name": "File",
"Args": {
"path": "%BASEDIR%/logs/log.txt",
"rollingInterval": "Day",
"retainedFileCountLimit": 30,
"shared": true
}
}
]
}
and in my background task i'm doing this:
Environment.SetEnvironmentVariable("BASEDIR", ApplicationData.Current.LocalFolder.Path);
var configuration = new ConfigurationBuilder()
.SetBasePath(ApplicationData.Current.LocalFolder.Path)
.AddJsonFile("appsettings.json")
.Build();
Log.Logger = new LoggerConfiguration()
.ReadFrom.Configuration(configuration)
.CreateLogger();what i'm doing wrong? or missing?
Log.Logger = new LoggerConfiguration()
.Filter.ByIncludingOnly("@Level = 'Information' and Length(Message)<5")
.WriteTo.Console()
.CreateLogger();
Log.Information("Cart contains");
Log.Information("Cart");
I'm a little confused about how ForContext() works when you pass a logger instance down a constructor chain. For example, assume class A creates Serilog logger and calls ForContext(GetType())...and then passes the logger instance to the constructor for class B which then also calls ForContext(GetType()).
When methods in instances of class A and class B log stuff are the log events decorated with the proper type information? Or does "last man win"? :)
SourceContext key. The .ForContext() methods on a given logger make a fresh instance that replaces the SourceContext with a new value, on a new instance. So if A has a ILogger _logger that it made, and B has one that it made, then they'll be independent. This is all best proven in C# interactive and/or by reading a tutorial such as serilog.net
Good Evening! Having an issue with outputting JSON to both console and file - I have a simple example which shows the issue but basically I have an object that contains a dictionary<string, object> and when and entry in the contents (not key) contains an equal sign (=) Serilog outputs the valid JSON string missing a closing brace (}).
Snipit:
var jsonString = "{\"Data\":{\"Key1\":\"Data with = sign\"}}";
var jsonString1 = "{\"Data\":{\"Key1\":\"Data without equal sign\"}}";
_logger.Error(jsonString);
_logger.Error(jsonString1);
The output in both console and file is:
{"Data":{"Key1":"Data with = sign"}
{"Data":{"Key1":"Data without equal sign"}}
notice the first loge entry with the = sign is missing the closing bracket.
The setup of the logger is:
var _logger = LoggerConfiguration()
.MinimumLevel.Verbose()
.WriteTo.File(@"C:\temp\serilogtest.log", outputTemplate: "{Message}{NewLine}")
.WriteTo.Console()
.CreateLogger();
Any ideas on how to solve this problem (without stripping out the =) would be great.
Thank you!!
serilog, anyone that traverses here will see it just as quick (and there's way more traffic there). That and/or googling for a tutorial, which is actually what I'd do!
batchPeriod for the PeriodicBatchingSink? I'm trying to set something like 100ms (for testing purposes) but I'm unable to get consistent results with anything lower than about 1500ms. (Using Serilog.Sinks.Datadog.Logs which inherits the PeriodicBatchingSink, in case that's relevant.) What I'm doing is modifying a custom ILogEventFilter and the minimum level using a LoggingLevelSwitch at runtime. I'm trying to figure out when I can guarantee that the new values are in effect, and I was hoping that if I waited the batchPeriod I would have that guarantee. It appears that's not the case, so I wonder what's going on.
{"@t":"2021-09-01T17:14:03.9903859Z","@mt":"{Test}: {Result}","Test":"XYZ","Result":"Pass","ExtraInfo":{"Thing1":false,"Thing2":true,"$type":"ExtraInfo"}}
How can I just pluck out Test,Result and 'Thing2' in a template?
You may be able to achieve the same as ForContext with the BeginScope mechanism in there
Alternately, some people use Serilog directly - in that case, as you've noticed, you lose the ability to have the automatic class name tagging that the generic ILogger gives
You'll need to pick your poison
serilog ILogger vs Microsoft Extensions ILogger or similar you should find a decent overview article and/or canonical SO answer on this
ExpressionTemplate should cover this (check the JSON or text examples in the recent two posts on nblumhardt.com); if it's something like Seq, see serilog/serilog#1373 (some code in there)
How would one approach invoking Destructure.AsScalar<T>() on particular subloggers only?
For now, I've solved the issue by maintaining two entirely separate top level loggers. But this prevents me from using the global Log.Logger, which is turning out to be not very pretty.
Does anyone have any ideas, why dynamically load of dll in my case broken?
serilog/serilog-settings-configuration#283