/// <summary>
/// De-queue the object
/// </summary>
public object Dequeue(string queueName)
{
if (String.IsNullOrEmpty(queueName))
{
throw new ArgumentNullException(nameof(queueName));
}
// Open the queue
this.Open(queueName);
String queueDirectory = Path.Combine(this.m_configuration.QueuePath, queueName);
// Serialize
var queueFile = Directory.GetFiles(queueDirectory).FirstOrDefault();
if (queueFile == null)
{
return(null);
}
this.m_tracer.TraceInfo("Will dequeue {0}", Path.GetFileNameWithoutExtension(queueFile));
object retVal = null;
using (var fs = File.OpenRead(queueFile))
{
retVal = QueueEntry.Load(fs).ToObject();
}
File.Delete(queueFile);
return(retVal);
}
/// <summary>
/// Dequeue by identifier
/// </summary>
public Queue.DispatcherQueueEntry DequeueById(string queueName, string correlationId)
{
try
{
if (String.IsNullOrEmpty(queueName))
{
throw new ArgumentNullException(nameof(queueName));
}
// Open the queue
this.Open(queueName);
String queueDirectory = Path.Combine(this.m_configuration.QueuePath, queueName);
// Serialize
String queueFile = null;
if (String.IsNullOrEmpty(correlationId))
{
queueFile = Directory.GetFiles(queueDirectory).FirstOrDefault();
}
else
{
queueFile = Path.Combine(queueDirectory, correlationId);
}
if (queueFile == null || !File.Exists(queueFile))
{
return(null);
}
this.m_tracer.TraceInfo("Will dequeue {0}", Path.GetFileNameWithoutExtension(queueFile));
QueueEntry retVal = null;
try
{
using (var fs = File.OpenRead(queueFile))
{
retVal = QueueEntry.Load(fs);
}
}
finally
{
File.Delete(queueFile);
}
return(new Core.Queue.DispatcherQueueEntry(Path.GetFileNameWithoutExtension(queueFile), queueName, retVal.CreationTime, retVal.Type, retVal.ToObject()));
}
catch (Exception e)
{
this.m_tracer.TraceError("Error de-queueing {0} - {1}", queueName, e);
return(null);
}
}
/// <summary>
/// Get a queue entry
/// </summary>
public DispatcherQueueEntry GetQueueEntry(string queueName, string correlationId)
{
var filePath = Path.Combine(this.m_configuration.QueuePath, queueName, correlationId);
if (File.Exists(filePath))
{
using (var fs = File.OpenRead(filePath))
{
var entry = QueueEntry.Load(fs);
return(new DispatcherQueueEntry(correlationId, queueName, entry.CreationTime, entry.Type, entry.XmlData));
}
}
throw new KeyNotFoundException($"{queueName}\\{correlationId} doesn't exist");
}
/// <summary>
/// Get all queue entries
/// </summary>
public IEnumerable <Queue.DispatcherQueueEntry> GetQueueEntries(string queueName)
{
foreach (var f in Directory.GetFiles(Path.Combine(this.m_configuration.QueuePath, queueName)))
{
QueueEntry entry = null;
try
{
using (var fs = File.OpenRead(f))
entry = QueueEntry.Load(fs);
}
catch
{
continue;
}
yield return(new Core.Queue.DispatcherQueueEntry(Path.GetFileNameWithoutExtension(f), queueName, entry.CreationTime, entry.Type, entry.XmlData));
}
}
