internal override void Release(MessageBody messageBody)
{
if (_logger.IsDebugEnabled)
{
_logger.DebugFormat("Releasing {0}.", this);
}
var releasedDataFile = new ReleasedDataFile(this);
// release claim token from database and transition to ReleasedDataFile (i.e. rename data file) within a transaction scope
using (var tx = new TransactionScope())
{
var result = DataFileServant.Instance.TryReleaseToken(ClaimStoreRelativePath) &&
DataFileServant.Instance.TryMoveFile(Path, releasedDataFile.Path);
if (result)
{
messageBody.DataFile = releasedDataFile;
tx.Complete();
}
else
{
messageBody.DataFile = new AwaitingRetryDataFile(this);
}
}
}
public void ReleaseDoesNotTransitionToNewState()
{
var sut = new ReleasedDataFile("201306158F341A2D6FD7416B87073A0132DD51AE.chk.20150627111406.released");
var messageBodyMock = new Mock <MessageBody>(sut);
messageBodyMock.SetupAllProperties();
sut.Release(messageBodyMock.Object);
Assert.That(messageBodyMock.Object.DataFile, Is.SameAs(sut));
}
internal override void Lock(MessageBody messageBody)
{
if (_logger.IsDebugEnabled)
{
_logger.DebugFormat("Locking {0}.", this);
}
// take a new lock ---update timestamp while staying in released state--- so that this agent instance get
// exclusive ownership of the data file should there be another remote agent instance working concurrently
var releasedDataFile = new ReleasedDataFile(this);
var result = DataFileServant.Instance.TryMoveFile(Path, releasedDataFile.Path);
messageBody.DataFile = result
? (DataFile)releasedDataFile
: new AwaitingRetryDataFile(this);
}
public void UnlockDeletesLocalDataFile()
{
var servantMock = new Mock <DataFileServant>();
DataFileServant.Instance = servantMock.Object;
const string filePath = "201306158F341A2D6FD7416B87073A0132DD51AE.chk.20150627111406.released";
var sut = new ReleasedDataFile(filePath);
var messageBodyMock = new Mock <MessageBody>(sut);
servantMock.Setup(s => s.TryDeleteFile(filePath)).Returns(true).Verifiable();
sut.Unlock(messageBodyMock.Object);
servantMock.VerifyAll();
}
public void UnlockTransitionsToAwaitingRetryDataFileWhenOperationFails()
{
var servantMock = new Mock <DataFileServant>();
DataFileServant.Instance = servantMock.Object;
const string filePath = "201306158F341A2D6FD7416B87073A0132DD51AE.chk.20150627111406.released";
var sut = new ReleasedDataFile(filePath);
var messageBodyMock = new Mock <MessageBody>(sut);
servantMock.Setup(s => s.TryDeleteFile(filePath)).Returns(false);
sut.Unlock(messageBodyMock.Object);
Assert.That(messageBodyMock.Object.DataFile, Is.TypeOf <AwaitingRetryDataFile>());
}
public void UnlockDoesNotTransitionToNewStateWhenOperationSucceeds()
{
var servantMock = new Mock <DataFileServant>();
DataFileServant.Instance = servantMock.Object;
const string filePath = "201306158F341A2D6FD7416B87073A0132DD51AE.chk.20150627111406.released";
var sut = new ReleasedDataFile(filePath);
var messageBodyMock = new Mock <MessageBody>(sut);
servantMock.Setup(s => s.TryDeleteFile(filePath)).Returns(true);
sut.Unlock(messageBodyMock.Object);
Assert.That(messageBodyMock.Object.DataFile, Is.SameAs(sut));
}
public void LockTransitionsToNewReleasedDataFileWhenOperationSucceeds()
{
var servantMock = new Mock <DataFileServant>();
DataFileServant.Instance = servantMock.Object;
const string filePath = "201306158F341A2D6FD7416B87073A0132DD51AE.chk.20150627111406.released";
var sut = new ReleasedDataFile(filePath);
var messageBodyMock = new Mock <MessageBody>(sut);
messageBodyMock.SetupAllProperties();
servantMock.Setup(s => s.TryMoveFile(filePath, It.IsAny <string>())).Returns(true);
sut.Lock(messageBodyMock.Object);
Assert.That(messageBodyMock.Object.DataFile, Is.TypeOf <ReleasedDataFile>());
Assert.That(messageBodyMock.Object.DataFile, Is.Not.SameAs(sut));
Assert.That(sut.Path.Tokenize().LockTime < messageBodyMock.Object.DataFile.Path.Tokenize().LockTime);
}
