public async Task <bool> Handle(T message)
{
string lockKey = $"{message.UniqueKey()}-{_lockSuffixKeyForHandler}";
MessageLockResponse lockResponse = await _messageLock.TryAquireLockAsync(lockKey, _timeout).ConfigureAwait(false);
if (!lockResponse.DoIHaveExclusiveLock)
{
if (lockResponse.IsMessagePermanentlyLocked)
{
return(RemoveTheMessageFromTheQueue);
}
return(LeaveItInTheQueue);
}
try
{
bool successfullyHandled = await _inner.Handle(message).ConfigureAwait(false);
if (successfullyHandled)
{
await _messageLock.TryAquireLockPermanentlyAsync(lockKey).ConfigureAwait(false);
}
return(successfullyHandled);
}
catch (Exception)
{
await _messageLock.ReleaseLockAsync(lockKey).ConfigureAwait(false);
throw;
}
}
protected override void Given()
{
base.Given();
var messageLockResponse = new MessageLockResponse
{
DoIHaveExclusiveLock = true
};
MessageLock = Substitute.For<IMessageLock>();
MessageLock.TryAquireLock(Arg.Any<string>(), Arg.Any<TimeSpan>())
.Returns(messageLockResponse);
_handler = new ExactlyOnceSignallingHandler(_tcs);
Handler = _handler;
}
public async Task <bool> Handle(T message)
{
string lockKey = $"{message.UniqueKey()}-{_lockSuffixKeyForHandler}";
MessageLockResponse lockResponse = await _messageLock.TryAquireLockAsync(lockKey, _timeout).ConfigureAwait(false);
if (!lockResponse.DoIHaveExclusiveLock)
{
if (lockResponse.IsMessagePermanentlyLocked)
{
_logger.LogDebug("Failed to acquire lock for message with key {MessageLockKey} as it is permanently locked.", lockKey);
return(RemoveTheMessageFromTheQueue);
}
_logger.LogDebug("Failed to acquire lock for message with key {MessageLockKey}; returning message to queue.", lockKey);
return(LeaveItInTheQueue);
}
try
{
_logger.LogDebug("Acquired lock for message with key {MessageLockKey}.", lockKey);
bool successfullyHandled = await _inner.Handle(message).ConfigureAwait(false);
if (successfullyHandled)
{
await _messageLock.TryAquireLockPermanentlyAsync(lockKey).ConfigureAwait(false);
_logger.LogDebug("Acquired permanent lock for message with key {MessageLockKey}.", lockKey);
}
return(successfullyHandled);
}
catch (Exception)
{
await _messageLock.ReleaseLockAsync(lockKey).ConfigureAwait(false);
_logger.LogDebug("Released lock for message with key {MessageLockKey}.", lockKey);
throw;
}
}
