public void RetryingTargetWrapperTest1()
{
var target = new MyTarget();
var wrapper = new RetryingTargetWrapper()
{
WrappedTarget = target,
RetryCount = 10,
RetryDelayMilliseconds = 1,
};
wrapper.Initialize(null);
target.Initialize(null);
var exceptions = new List<Exception>();
var events = new []
{
new LogEventInfo(LogLevel.Debug, "Logger1", "Hello").WithContinuation(exceptions.Add),
new LogEventInfo(LogLevel.Info, "Logger1", "Hello").WithContinuation(exceptions.Add),
new LogEventInfo(LogLevel.Info, "Logger2", "Hello").WithContinuation(exceptions.Add),
};
wrapper.WriteAsyncLogEvents(events);
// make sure all events went through
Assert.AreEqual(3, target.Events.Count);
Assert.AreSame(events[0].LogEvent, target.Events[0]);
Assert.AreSame(events[1].LogEvent, target.Events[1]);
Assert.AreSame(events[2].LogEvent, target.Events[2]);
Assert.AreEqual(events.Length, exceptions.Count, "Some continuations were not invoked.");
// make sure there were no exception
foreach (var ex in exceptions)
{
Assert.IsNull(ex);
}
}
public void RetryingTargetWrapperTest2()
{
var target = new MyTarget()
{
ThrowExceptions = 6,
};
var wrapper = new RetryingTargetWrapper()
{
WrappedTarget = target,
RetryCount = 4,
RetryDelayMilliseconds = 1,
};
wrapper.Initialize(null);
target.Initialize(null);
var exceptions = new List<Exception>();
var events = new []
{
new LogEventInfo(LogLevel.Debug, "Logger1", "Hello").WithContinuation(exceptions.Add),
new LogEventInfo(LogLevel.Info, "Logger1", "Hello").WithContinuation(exceptions.Add),
new LogEventInfo(LogLevel.Info, "Logger2", "Hello").WithContinuation(exceptions.Add),
};
var internalLogOutput = RunAndCaptureInternalLog(() => wrapper.WriteAsyncLogEvents(events), LogLevel.Trace);
string expectedLogOutput = @"Warn Error while writing to 'MyTarget': System.InvalidOperationException: Some exception has ocurred.. Try 1/4
Warn Error while writing to 'MyTarget': System.InvalidOperationException: Some exception has ocurred.. Try 2/4
Warn Error while writing to 'MyTarget': System.InvalidOperationException: Some exception has ocurred.. Try 3/4
Warn Error while writing to 'MyTarget': System.InvalidOperationException: Some exception has ocurred.. Try 4/4
Warn Too many retries. Aborting.
Warn Error while writing to 'MyTarget': System.InvalidOperationException: Some exception has ocurred.. Try 1/4
Warn Error while writing to 'MyTarget': System.InvalidOperationException: Some exception has ocurred.. Try 2/4
";
Assert.AreEqual(expectedLogOutput, internalLogOutput);
// first event does not get to wrapped target because of too many attempts.
// second event gets there in 3rd retry
// and third event gets there immediately
Assert.AreEqual(2, target.Events.Count);
Assert.AreSame(events[1].LogEvent, target.Events[0]);
Assert.AreSame(events[2].LogEvent, target.Events[1]);
Assert.AreEqual(events.Length, exceptions.Count, "Some continuations were not invoked.");
Assert.IsNotNull(exceptions[0]);
Assert.AreEqual("Some exception has ocurred.", exceptions[0].Message);
Assert.IsNull(exceptions[1]);
Assert.IsNull(exceptions[2]);
}