public static void Main()
{
using (var logWriter = new MessageToFileLogWriterFactory().CreateLogWriter())
using (var logger = new LoggerWithDelay(TimeSpan.FromSeconds(5), logWriter))
{
if (File.Exists(MessageToFileLogWriterFactory.FileName))
{
File.Delete(MessageToFileLogWriterFactory.FileName);
}
ThreadPool.QueueUserWorkItem(_ =>
{
var t = logger.LogWithDelay("message 1"); // this message should not be in the log output
Thread.Sleep(TimeSpan.FromSeconds(1));
t.Cancel();
Console.WriteLine("First have finished");
});
ThreadPool.QueueUserWorkItem(_ =>
{
var t = logger.LogWithDelay("message 2"); // this message should be in the log output
Thread.Sleep(TimeSpan.FromSeconds(6));
t.Cancel();
Console.WriteLine("Second have finished");
});
Console.ReadLine();
}
}
public void TestMultithreadLog()
{
const int threadCount = 100;
const int maxSecondsDelay = 10;
var logDelay = TimeSpan.FromSeconds(maxSecondsDelay / 2);
var loggingMessages = new TestLoggingMessage[threadCount];
using (var logWriter = new MessageToFileLogWriterFactory().CreateLogWriter())
using (var logger = new LoggerWithDelay(logDelay, logWriter))
{
var random = new Random();
var testTasks = new Task[loggingMessages.Length];
for (int i = 0; i < loggingMessages.Length; i++)
{
var testLogginMessage = new TestLoggingMessage((i + 1).ToString(), TimeSpan.FromSeconds(random.Next(1, maxSecondsDelay + 1)));
loggingMessages[i] = testLogginMessage;
testTasks[i] = new Task(t =>
{
var testMessage = (TestLoggingMessage)t;
var handler = logger.LogWithDelay(testMessage.Message);
Thread.Sleep(testMessage.Delay);
handler.Cancel();
}, testLogginMessage);
}
if (File.Exists(MessageToFileLogWriterFactory.FileName))
{
File.Delete(MessageToFileLogWriterFactory.FileName);
}
testTasks.AsParallel().ForAll(t => t.Start());
Task.WaitAll(testTasks);
}
var loggedMessages = File.ReadAllLines(MessageToFileLogWriterFactory.FileName);
foreach (var testLoggingMessage in loggingMessages)
{
bool shouldBeLogged = testLoggingMessage.Delay >= logDelay;
Assert.AreEqual(shouldBeLogged, loggedMessages.Contains(testLoggingMessage.Message));
}
}
