public async Task Retry_based_on_configured_policy()
{
ILockProvider lockProvider = new LockProvider();
var exponentialRetryControllerObj = new ExponentialRetryController(new ExponentialRetrySettingsProvider());
var globalLockProvider = new GlobalLock(lockProvider, exponentialRetryControllerObj);//
Func <Task <DateTime> > writeLockBlockingAction = async() =>
{
DateTime lockAcquiredTime = new DateTime();
using (var globalLock = await globalLockProvider.EnterReadLock("test"))
{
lockAcquiredTime = DateTime.Now;
Thread.Sleep(500);
}
return(lockAcquiredTime);
};
Func <Task <DateTime> > writeLockAction = async() =>
{
DateTime lockAcquiredTime = new DateTime();
using (var globalLock = await globalLockProvider.EnterWriteLock("test"))
{
lockAcquiredTime = DateTime.Now;
}
return(lockAcquiredTime);
};
Task <DateTime> dateTimeTask1 = null, dateTimeTask2 = null;
Parallel.Invoke(
() => { dateTimeTask1 = writeLockBlockingAction(); },
() => {
Thread.Sleep(20);
dateTimeTask2 = writeLockAction();
}
);
var dateTime1 = dateTimeTask1.Result;
var dateTime2 = dateTimeTask2.Result;
var timeDiff = (dateTime2 - dateTime1).TotalMilliseconds;
Assert.IsTrue(timeDiff >= 1200);
Assert.IsTrue(timeDiff <= 1400); // (int)Math.Pow(3, _retryCount) * 10;) for ExponentialRetry. 30 + 90 + 270 + 810 = 1200
}
public async Task Retry_based_on_configured_linear_policy()
{
ILockProvider lockProvider = new LockProvider();
var linearRetryControllerObj = new LinearRetryController(new LinearRetrySettingsProvider());
var globalLockProvider = new GlobalLock(lockProvider, linearRetryControllerObj);//
Func <Task <DateTime> > writeLockBlockingAction = async() =>
{
DateTime lockAcquiredTime = new DateTime();
using (var globalLock = await globalLockProvider.EnterReadLock("test"))
{
lockAcquiredTime = DateTime.Now;
Thread.Sleep(500);
}
return(lockAcquiredTime);
};
Func <Task <DateTime> > writeLockAction = async() =>
{
DateTime lockAcquiredTime = new DateTime();
using (var globalLock = await globalLockProvider.EnterWriteLock("test"))
{
lockAcquiredTime = DateTime.Now;
}
return(lockAcquiredTime);
};
Task <DateTime> dateTimeTask1 = null, dateTimeTask2 = null;
Parallel.Invoke(
() => { dateTimeTask1 = writeLockBlockingAction(); },
() => {
Thread.Sleep(20);
dateTimeTask2 = writeLockAction();
}
);
var dateTime1 = dateTimeTask1.Result;
var dateTime2 = dateTimeTask2.Result;
var timeDiff = (dateTime2 - dateTime1).TotalMilliseconds;
Assert.IsTrue(timeDiff >= 600);
Assert.IsTrue(timeDiff <= 800); // 200 + 200 + 200 = 600
}
public async Task Should_be_able_to_acquire_read_and_write_locks_in_async_way()
{
ILockProvider lockProvider = new LockProvider();
var globalLockProvider = new GlobalLock(lockProvider);
var isReadLockAcquired = false;
var isWriteLockAcquired = false;
using (await globalLockProvider.EnterReadLock("test"))
{
isReadLockAcquired = true;
}
using (await globalLockProvider.EnterWriteLock("test"))
{
isWriteLockAcquired = true;
}
Assert.IsTrue(isReadLockAcquired);
Assert.IsTrue(isWriteLockAcquired);
}
public async Task ReadWriteLocks_Should_Wait_For_Completion_Of_WriteLock()
{
ILockProvider lockProvider = new LockProvider();
var globalLockProvider = new GlobalLock(lockProvider);
Func <Task <DateTime> > writeLockBlockingAction = async() =>
{
DateTime lockAcquiredTime = new DateTime();
using (var globalLock = await globalLockProvider.EnterWriteLock("test"))
{
lockAcquiredTime = DateTime.Now;
Thread.Sleep(500);
}
return(lockAcquiredTime);
};
Func <Task <DateTime> > writeLockAction = async() =>
{
DateTime lockAcquiredTime = new DateTime();
using (var globalLock = await globalLockProvider.EnterWriteLock("test"))
{
lockAcquiredTime = DateTime.Now;
}
return(lockAcquiredTime);
};
Func <Task <DateTime> > readLockAction = async() =>
{
DateTime lockAcquiredTime = new DateTime();
using (var globalLock = await globalLockProvider.EnterReadLock("test"))
{
lockAcquiredTime = DateTime.Now;
}
return(lockAcquiredTime);
};
Task <DateTime> dateTimeTask1 = null, dateTimeTask2 = null, dateTimeTask3 = null;
Parallel.Invoke(
() => { dateTimeTask1 = writeLockBlockingAction(); },
() => {
Thread.Sleep(100);
dateTimeTask2 = writeLockAction();
},
() => {
Thread.Sleep(100);
dateTimeTask3 = readLockAction();
}
);
var dateTime1 = dateTimeTask1.Result;
var dateTime2 = dateTimeTask2.Result;
var dateTime3 = dateTimeTask3.Result;
var timeDiff = (dateTime3 - dateTime1).TotalMilliseconds;
Assert.IsTrue(timeDiff > 500);
var timeDiff1 = (dateTime2 - dateTime1).TotalMilliseconds;
Assert.IsTrue(timeDiff1 > 500);
}
