public void Logging()
{
const string message = "Error Message";
const string messageFormat = "Message Format: message: {0}, exception: {1}";
var ex = new Exception();
var log = new SerilogLogger(GetType());
Assert.IsNotNull(log);
log.Debug(message);
log.Debug(message, ex);
log.DebugFormat(messageFormat, message, ex.Message);
log.Debug(ex, messageFormat, messageFormat, ex);
log.Error(message);
log.Error(message, ex);
log.ErrorFormat(messageFormat, message, ex.Message);
log.Error(ex, messageFormat, messageFormat, ex);
log.Fatal(message);
log.Fatal(message, ex);
log.FatalFormat(messageFormat, message, ex.Message);
log.Fatal(ex, messageFormat, messageFormat, ex);
log.Info(message);
log.Info(message, ex);
log.InfoFormat(messageFormat, message, ex.Message);
log.Info(ex, messageFormat, messageFormat, ex);
log.Warn(message);
log.Warn(message, ex);
log.WarnFormat(messageFormat, message, ex.Message);
log.Warn(ex, messageFormat, messageFormat, ex);
}
public void Fatal_LambdaMessage()
{
// Prepare
const string message = "Simple Message";
logger.Setup(l => l.Write(
LogEventLevel.Fatal, message, null))
.Verifiable();
log = new SerilogLogger(logger.Object);
// Act
log.Fatal(message);
// Assert
logger.VerifyAll();
}
public void Fatal_MessageWithException()
{
// Prepare
const string message = "Exception occurred";
var ex = new Exception(message);
logger.Setup(l => l.Write(
LogEventLevel.Fatal, ex, message, null))
.Verifiable();
log = new SerilogLogger(logger.Object);
// Act
log.Fatal(message, ex);
// Assert
logger.VerifyAll();
}
static void Main(string[] args)
{
// Log configuration should be setup on client app side, so I left this here.
// I don't like an idea to add Serilog packages to this project, but I see no other way at the moment.
// Every so called sink (ColoredConsole, File, etc) is a standalone package, so configuration must be done here.
// There is another aproach - a congig file. If we go with config file, then probably we can avoid issue above.
/* we cannot configure Serilog inside client app cuz we are going to hide log provider from end users behind our wrapper
* var cfg = new LoggerConfiguration()
* .Enrich.FromLogContext()
* .MinimumLevel.Debug()
* .WriteTo.ColoredConsole(
* LogEventLevel.Verbose,
* "{NewLine}{Timestamp:HH:mm:ss} [{Level}] ({CorrelationToken}) {Message}{NewLine}{Exception}");
*/
var configuration = new ConfigurationBuilder()
.AddJsonFile("appsettings.json")
.Build();
using (ILogger logger = new SerilogLogger(configuration))
{
//Simple log entry
logger.Debug("Hello World!");
//Parameterized log entry
var quota = 100;
var user = new { FirstName = "John", LastName = "Walter" };
logger.Write(LogLevel.Warning, "Disk quota {Quota} MB exceeded by {User}", quota, user);
//Exception handling
var myDataObject = new { Property1 = "Value1", Property2 = "Value2", Property3 = "Value3" };
try
{
int x = 0;
int y = 10 / x;
}
catch (Exception ex)
{
logger.Fatal("Got an exception for {MyDataObject}", ex, myDataObject);
}
}
Console.ReadKey();
}