public async Task FactoryShutdownCanBeCancelled()
{
var listener = new DelayAsyncTraceListener(100);
var factory = new LogFactoryBuilder()
.UseTraceSource()
.AddTraceListener(listener)
.Build();
var log = factory.Create("Test");
for (int i = 0; i < 10; i++)
{
log.Info(i);
}
var cancellationTokenSource = new CancellationTokenSource(250);
try
{
await factory.ShutdownAsync(cancellationTokenSource.Token);
}
catch (OperationCanceledException) { }
Assert.AreNotEqual(0, listener.QueueCount);
}
public void BuilderCreatesFactoryWithDefaultOptions()
{
var factory = new LogFactoryBuilder()
.UseTraceSource()
.Build();
var log = factory.Create("Test");
Assert.IsTrue(log.IsEnabled(LogLevel.Information));
}
public void BuilderCreatesFactoryWithCustomFilters()
{
var factory = new LogFactoryBuilder()
.UseTraceSource()
.SetMinimumLogLevel(LogLevel.Information)
.AddFilter("Decos.Diagnostics", LogLevel.Debug)
.Build();
Assert.IsTrue(factory.Create("Decos.Diagnostics").IsEnabled(LogLevel.Debug));
Assert.IsFalse(factory.Create("Decos").IsEnabled(LogLevel.Debug));
}
public void BuilderCreatesFactoryWithCustomLogLevel()
{
var factory = new LogFactoryBuilder()
.UseTraceSource()
.SetMinimumLogLevel(LogLevel.Debug)
.Build();
var log = factory.Create("Test");
Assert.IsTrue(log.IsEnabled(LogLevel.Debug));
}
public void BuilderAddsTraceListenersUponBuild()
{
var traceListener = new NullTraceListener();
var factory = new LogFactoryBuilder()
.UseTraceSource()
.AddTraceListener(traceListener)
.Build();
var log = (TraceSourceLog)factory.Create("Test");
CollectionAssert.Contains(log.TraceSource.Listeners, traceListener);
}
public async Task FactoryOnlyHooksOncePerAsyncListener()
{
var listener = new DelayAsyncTraceListener(5);
var factory = new LogFactoryBuilder()
.UseTraceSource()
.AddTraceListener(listener)
.Build();
for (int i = 0; i < 100; i++)
{
var log = factory.Create($"Logger{i}");
log.Info($"{i}");
}
Assert.AreEqual(1, ((TraceSourceLogFactory)factory)._shutdownTasks.Count);
}
public void TraceListenerWithHigherMinimumLevelDoesNotGetCalled()
{
var traceListener = new DelayAsyncTraceListener(-1);
var factory = new LogFactoryBuilder()
.UseTraceSource()
.AddTraceListener(traceListener, LogLevel.Warning)
.SetMinimumLogLevel(LogLevel.Information)
.Build();
var log = (TraceSourceLog)factory.Create("Test");
Assert.IsTrue(log.IsEnabled(LogLevel.Information));
log.Info("Test");
Assert.IsFalse(traceListener.TraceCalled);
}
public void BuilderRunsAsyncListeners()
{
var listener = new DelayAsyncTraceListener(-1);
var factory = new LogFactoryBuilder()
.UseTraceSource()
.AddTraceListener(listener)
.Build();
var log = factory.Create("Test");
for (int i = 0; i < 100; i++)
{
log.Info(i);
}
Assert.IsTrue(listener.ProcessQueueAsyncCalled);
}
public void ErrorOrLowerShouldNotBeTracedByDefault()
{
var builder = new LogFactoryBuilder()
.UseTraceSource()
.AddSlack("urn:null");
builder.ConfigureOptions(options =>
{
var filter = options.Listeners
.OfType <SlackTraceListener>()
.Single()
.Filter;
Assert.IsFalse(filter.ShouldTrace(null, null, System.Diagnostics.TraceEventType.Error, 0, null, null, null, null));
Assert.IsTrue(filter.ShouldTrace(null, null, System.Diagnostics.TraceEventType.Critical, 0, null, null, null, null));
});
}
public async Task FactoryAllowsForGracefulShutdown()
{
var listener = new DelayAsyncTraceListener(100);
var factory = new LogFactoryBuilder()
.UseTraceSource()
.AddTraceListener(listener)
.Build();
var log = factory.Create("Test");
for (int i = 0; i < 10; i++)
{
log.Info(i);
}
await factory.ShutdownAsync();
Assert.AreEqual(0, listener.QueueCount);
}
/// <summary>
/// Adds logging services using the <see cref="System.Diagnostics.TraceSource"/>
/// infrastructure.
/// </summary>
/// <param name="services">The service collection to add the services to.</param>
/// <param name="configure">A delegate to configure the logging options.</param>
/// <returns>A reference to the service collection.</returns>
public static IServiceCollection AddTraceSourceLogging(
this IServiceCollection services,
Action <TraceSourceLogFactoryBuilder> configure)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
var builder = new LogFactoryBuilder()
.UseTraceSource();
configure(builder);
var logFactory = builder.Build();
services.AddSingleton(logFactory);
services.AddTransient(typeof(ILog <>), typeof(Log <>));
services.AddSingleton <ApplicationShutdownHandler>();
return(services);
}
