public DirectoryQueueMessage GetMessage(TimeSpan?retrieveVisibilityTimeout = null)
{
if (!System.IO.Directory.Exists(this.queuePath))
{
return(null);
}
try
{
this.AcquireLock();
System.Diagnostics.Debug.WriteLine("Get Message");
string msgpath = null;
System.IO.DirectoryInfo dInfo = new System.IO.DirectoryInfo(this.queuePath);
foreach (var t in dInfo.GetFileSystemInfos($"*{msgExtension}").OrderBy(p => p.CreationTime))
{
if ((t.Attributes & System.IO.FileAttributes.Hidden) != System.IO.FileAttributes.Hidden)
{
msgpath = t.FullName;
}
}
if (null == msgpath)
{
return(null);
}
DirectoryQueueMessage nextMessage = DirectoryQueueMessage.FromQueueFile(msgpath);
System.Diagnostics.Debug.WriteLine(msgpath);
// NOTE: we release the lock after we have the message because we update the visibility for the file
nextMessage.DequeueCount++;
nextMessage.Hide(retrieveVisibilityTimeout);
nextMessage.Store(); // make sure dequeue count has been stored correctly.
return(nextMessage);
}
finally
{
this.ReleaseLock();
}
}
public void AddMessage(DirectoryQueueMessage msg, TimeSpan?timeToLive, TimeSpan?initialVisibilityDelay)
{
try
{
this.AcquireLock();
System.Diagnostics.Debug.WriteLine("Add Message");
// set the msg name;
string fileNameAndPath = System.IO.Path.Combine(this.queuePath, DateTime.Now.Ticks.ToString("0000000000") + msgExtension);
while (System.IO.File.Exists(fileNameAndPath))
{
fileNameAndPath = System.IO.Path.Combine(this.queuePath, DateTime.Now.Ticks.ToString("0000000000") + msgExtension);
}
msg.SetTimeToLive(timeToLive);
msg.SetInitialVisibilityDelay(initialVisibilityDelay);
msg.LocalPathToQueuedMessage = fileNameAndPath;
msg.Store();
}
finally
{
this.ReleaseLock();
}
}
