public void AssemblyTraceLogTest()
{
var log = new AssemblyTraceLog <MyEventId, AssemblyTraceLogTests>();
var listener = log.TraceSource.Listeners.OfType <TestTraceListener>().First();
listener.MethodCallInformation.Clear();
log.Information(MyEventId.MyApplicationStart, "a1");
try
{
throw new ApplicationException("b1");
}
catch (Exception ex)
{
log.Error(MyEventId.MyApplicationError, ex, "a{0}", 2);
}
Assert.AreEqual("Essential.Diagnostics.Tests", log.TraceSource.Name);
var events = listener.MethodCallInformation;
Assert.AreEqual("Essential.Diagnostics.Tests", events[0].Source);
Assert.AreEqual(1100, events[0].Id);
Assert.AreEqual(TraceEventType.Information, events[0].EventType);
Assert.AreEqual("a1", events[0].Message);
Assert.AreEqual(5100, events[1].Id);
Assert.AreEqual(TraceEventType.Error, events[1].EventType);
StringAssert.StartsWith(events[1].Message, "a2|Exception: System.ApplicationException: b1");
}
public void AlternateExceptionFormatting()
{
var log = new AssemblyTraceLog <MyEventId, AssemblyTraceLogTests>();
log.ExceptionSeparator = " ";
log.ExceptionFormat = "Exception={{{0}}}";
var listener = log.TraceSource.Listeners.OfType <TestTraceListener>().First();
listener.MethodCallInformation.Clear();
try
{
throw new ApplicationException("b1");
}
catch (Exception ex)
{
log.Error(MyEventId.MyApplicationError, ex, "a{0}", 2);
}
var events = listener.MethodCallInformation;
Assert.AreEqual(5100, events[0].Id);
Assert.AreEqual(TraceEventType.Error, events[0].EventType);
Console.WriteLine(events[0].Message);
StringAssert.StartsWith(events[0].Message, "a2 Exception={System.ApplicationException: b1");
}
static void Main(string[] args)
{
var stopwatch = Stopwatch.StartNew();
// Basic source
var source = new TraceSource("SeqFrameworkDiagnostics.Example.Basic");
source.TraceEvent(TraceEventType.Information, (int)ExampleEventId.StartExample, "Hello, {0}, from .NET Framework", Environment.UserName);
source.TraceData(TraceEventType.Information, (int)ExampleEventId.DataTrace, "Data Item", 42.80D, Guid.NewGuid());
source.TraceEvent(TraceEventType.Verbose, 0, "a={1} b={0}", "B", "A");
// Detailed source
var detailedSource = new TraceSource("SeqFrameworkDiagnostics.Example.Detailed");
detailedSource.TraceEvent(TraceEventType.Warning, (int)ExampleEventId.DetailedWarning, "Sample detailed warning");
// Logical operation stack context (using scope extension)
using (var requestScope = new LogicalOperationScope(source, "Request 1234", (int)ExampleEventId.BeginRequest, (int)ExampleEventId.EndRequest, "Begin request", "End request"))
{
using (var transactionScope = new LogicalOperationScope("Transaction 5678"))
{
source.TraceEvent(TraceEventType.Information, (int)ExampleEventId.LogicalOperationStackExample, "Sample with operation stack context {0}, {1}, {2}", 42, new DateTimeOffset(1973, 5, 14, 0, 0, 0, TimeSpan.FromHours(10)), "Fnord");
}
}
// Activity ID & transfers (using scope extension)
using (var activityScope = new ActivityScope(source))
{
source.TraceEvent(TraceEventType.Information, (int)ExampleEventId.ActivityTransferExample, "Correlation example with activity ID transfer");
}
// Fluent interface extensions
ITraceLog <ExampleEventId> log = new AssemblyTraceLog <ExampleEventId, Program>();
try
{
log.Information(ExampleEventId.FluentExample, "Fluent logging API, {0}", Environment.OSVersion);
log.Verbose("About to throw exception");
throw new DivideByZeroException();
}
catch (Exception ex)
{
log.Error(ExampleEventId.DivideException, ex, "Ooops!");
}
stopwatch.Stop();
log.Verbose("Time {0:'P''T'hh'H'mm'M'ss'.'fff'S'}", stopwatch.Elapsed);
log.Information(ExampleEventId.EndExample, "Done");
Console.WriteLine("Done");
Console.ReadKey();
}