private void ReadQueueFromDisk(Queue <QueuedMessage> queue, string path)
{
if (Directory.Exists(path))
{
MessageFormatter messageFormatter = new MessageFormatter();
foreach (string item in Directory.GetFiles(path, "*.msg"))
{
if (File.Exists(item))
{
ServiceEventMessage message = null;
using (FileStream stream = File.OpenRead(item))
{
message = messageFormatter.Deserialise(stream);
stream.Close();
}
string filename = Path.GetFileNameWithoutExtension(item);
string routingKey = string.Empty;
int index = filename.IndexOf('_');
if (index != -1)
{
routingKey = filename.Substring(0, index);
}
if (!string.IsNullOrEmpty(routingKey))
{
queue.Enqueue(new QueuedMessage()
{
RoutingKey = routingKey, Message = message
});
}
DeleteMessageFile(item);
}
}
}
}
private void ReadQueueFromDisk(Queue<QueuedMessage> queue, string path)
{
if (Directory.Exists(path))
{
MessageFormatter messageFormatter = new MessageFormatter();
foreach (string item in Directory.GetFiles(path, "*.msg"))
{
if (File.Exists(item))
{
ServiceEventMessage message = null;
using (FileStream stream = File.OpenRead(item))
{
message = messageFormatter.Deserialise(stream);
stream.Close();
}
string filename = Path.GetFileNameWithoutExtension(item);
string routingKey = string.Empty;
int index = filename.IndexOf('_');
if (index != -1)
{
routingKey = filename.Substring(0, index);
}
if (!string.IsNullOrEmpty(routingKey))
queue.Enqueue(new QueuedMessage() { RoutingKey = routingKey, Message = message });
DeleteMessageFile(item);
}
}
}
}
private TimeSpan PublishTransactionalMessages(IModel transactionalChannel, string hostname, string exchange, string path, bool requeue)
{
TimeSpan result = TimeSpan.MaxValue;
MessageFormatter messageFormatter = new MessageFormatter();
string[] files = Directory.GetFiles(path, "*.msg");
int skipCount = 0;
while (files.Length > skipCount)
{
skipCount = 0;
foreach (string item in files)
{
if (File.Exists(item))
{
byte[] data = null;
try
{
data = File.ReadAllBytes(item);
}
catch
{
}
if (data != null)
{
if (requeue)
{
ServiceEventMessage message = messageFormatter.Deserialise(new MemoryStream(data));
if ((message != null) && (message.QueueAfterTime.HasValue) && (message.QueueAfterTime.Value > DateTime.UtcNow))
{
TimeSpan delay = message.QueueAfterTime.Value.Subtract(DateTime.UtcNow);
if (delay < result)
result = delay;
skipCount++;
continue;
}
}
string messageFilename = Path.ChangeExtension(item, ".trx");
if (File.Exists(messageFilename))
DeleteMessageFile(messageFilename);
File.Move(item, messageFilename);
IBasicProperties properties = transactionalChannel.CreateBasicProperties();
properties.CorrelationId = hostname;
properties.DeliveryMode = 2;
properties.ContentType = messageFormatter.ContentType;
string filename = Path.GetFileNameWithoutExtension(item);
string routingKey = string.Empty;
int index = filename.IndexOf('_');
if (index != -1)
{
routingKey = filename.Substring(0, index);
int nextIndex = filename.IndexOf('_', index + 1);
if (nextIndex == -1)
properties.MessageId = filename.Substring(index + 1);
else
properties.MessageId = filename.Substring(index + 1, nextIndex - index - 1);
}
transactionalChannel.TxSelect();
transactionalChannel.BasicPublish(exchange, routingKey, properties, data);
transactionalChannel.TxCommit();
DeleteMessageFile(messageFilename);
}
}
}
files = Directory.GetFiles(path, "*.msg");
}
return result;
}
private TimeSpan PublishTransactionalMessages(IModel transactionalChannel, string hostname, string exchange, string path, bool requeue)
{
TimeSpan result = TimeSpan.MaxValue;
MessageFormatter messageFormatter = new MessageFormatter();
string[] files = Directory.GetFiles(path, "*.msg");
int skipCount = 0;
while (files.Length > skipCount)
{
skipCount = 0;
foreach (string item in files)
{
if (File.Exists(item))
{
byte[] data = null;
try
{
data = File.ReadAllBytes(item);
}
catch
{
}
if (data != null)
{
if (requeue)
{
ServiceEventMessage message = messageFormatter.Deserialise(new MemoryStream(data));
if ((message != null) && (message.QueueAfterTime.HasValue) && (message.QueueAfterTime.Value > DateTime.UtcNow))
{
TimeSpan delay = message.QueueAfterTime.Value.Subtract(DateTime.UtcNow);
if (delay < result)
{
result = delay;
}
skipCount++;
continue;
}
}
string messageFilename = Path.ChangeExtension(item, ".trx");
if (File.Exists(messageFilename))
{
DeleteMessageFile(messageFilename);
}
File.Move(item, messageFilename);
IBasicProperties properties = transactionalChannel.CreateBasicProperties();
properties.CorrelationId = hostname;
properties.DeliveryMode = 2;
properties.ContentType = messageFormatter.ContentType;
string filename = Path.GetFileNameWithoutExtension(item);
string routingKey = string.Empty;
int index = filename.IndexOf('_');
if (index != -1)
{
routingKey = filename.Substring(0, index);
int nextIndex = filename.IndexOf('_', index + 1);
if (nextIndex == -1)
{
properties.MessageId = filename.Substring(index + 1);
}
else
{
properties.MessageId = filename.Substring(index + 1, nextIndex - index - 1);
}
}
transactionalChannel.TxSelect();
transactionalChannel.BasicPublish(exchange, routingKey, properties, data);
transactionalChannel.TxCommit();
DeleteMessageFile(messageFilename);
}
}
}
files = Directory.GetFiles(path, "*.msg");
}
return(result);
}
void IBasicConsumer.HandleBasicDeliver(string consumerTag, ulong deliveryTag, bool redelivered, string exchange, string routingKey, IBasicProperties properties, byte[] body)
{
try
{
if (_ProcessMessages)
{
Interlocked.Increment(ref _MessageHandlingCount);
MessageFormatter messageFormatter = new MessageFormatter();
ServiceEventMessage message = messageFormatter.Deserialise(new MemoryStream(body));
lock (_Queues)
{
if (_Queues.ContainsKey(consumerTag))
{
MessageQueue queue = _Queues[consumerTag];
message.DeliveryID = Guid.NewGuid();
AckMessageInfo ackMessageInfo = new AckMessageInfo();
ackMessageInfo.DeliveryID = message.DeliveryID;
ackMessageInfo.QueueName = queue.QueueName;
ackMessageInfo.DeliveryTag = deliveryTag;
ackMessageInfo.TotalExpected = queue.Handlers.Count;
ackMessageInfo.ChannelHandler = this;
queue.AddAckMessageInfo(message.DeliveryID, ackMessageInfo);
message.Queue = queue.QueueName;
for (int index = 0; index < queue.Handlers.Count; index++)
{
try
{
MessageArrivedEventHandler handler = queue.Handlers[index];
handler.BeginInvoke(_ConnectionFactory.HostName, message, _Subscription.InvokeCallBack, new MessageArrivedState(handler, message, queue, ackMessageInfo));
}
catch (Exception ex)
{
_Subscription.NackMessage(message);
ApplicationEventLog.WriteEntry("Flow", ex.ToString(), System.Diagnostics.EventLogEntryType.Error);
}
}
if (queue.Handlers.Count == 0)
{
Thread.Sleep(500);
_Model.BasicReject(deliveryTag, true);
Interlocked.Decrement(ref _MessageHandlingCount);
ApplicationEventLog.WriteEntry("Flow", string.Format("No handlers to process message {0}", consumerTag), System.Diagnostics.EventLogEntryType.Error);
}
}
else
{
Thread.Sleep(500);
_Model.BasicReject(deliveryTag, true);
Interlocked.Decrement(ref _MessageHandlingCount);
ApplicationEventLog.WriteEntry("Flow", string.Format("HandleBasicDeliver: Failed to locate queue {0}", consumerTag), System.Diagnostics.EventLogEntryType.Error);
}
}
}
}
catch (System.Runtime.Serialization.SerializationException)
{
string path = GetBadMessageDirectory();
File.WriteAllBytes(Path.Combine(path, string.Concat(consumerTag, "_", Guid.NewGuid().ToString())), body);
_Model.BasicReject(deliveryTag, false);
Interlocked.Decrement(ref _MessageHandlingCount);
}
catch (Exception ex)
{
Thread.Sleep(500);
try
{
if (_Model != null)
{
_Model.BasicReject(deliveryTag, true);
}
Interlocked.Decrement(ref _MessageHandlingCount);
}
catch { }
ApplicationEventLog.WriteEntry("Flow", ex.ToString(), System.Diagnostics.EventLogEntryType.Error);
}
}
void IBasicConsumer.HandleBasicDeliver(string consumerTag, ulong deliveryTag, bool redelivered, string exchange, string routingKey, IBasicProperties properties, byte[] body)
{
try
{
if (_ProcessMessages)
{
Interlocked.Increment(ref _MessageHandlingCount);
MessageFormatter messageFormatter = new MessageFormatter();
ServiceEventMessage message = messageFormatter.Deserialise(new MemoryStream(body));
lock (_Queues)
{
if (_Queues.ContainsKey(consumerTag))
{
MessageQueue queue = _Queues[consumerTag];
message.DeliveryID = Guid.NewGuid();
AckMessageInfo ackMessageInfo = new AckMessageInfo();
ackMessageInfo.DeliveryID = message.DeliveryID;
ackMessageInfo.QueueName = queue.QueueName;
ackMessageInfo.DeliveryTag = deliveryTag;
ackMessageInfo.TotalExpected = queue.Handlers.Count;
ackMessageInfo.ChannelHandler = this;
queue.AddAckMessageInfo(message.DeliveryID, ackMessageInfo);
message.Queue = queue.QueueName;
for (int index = 0; index < queue.Handlers.Count; index++)
{
try
{
MessageArrivedEventHandler handler = queue.Handlers[index];
handler.BeginInvoke(_ConnectionFactory.HostName, message, _Subscription.InvokeCallBack, new MessageArrivedState(handler, message, queue, ackMessageInfo));
}
catch (Exception ex)
{
_Subscription.NackMessage(message);
ApplicationEventLog.WriteEntry("Flow", ex.ToString(), System.Diagnostics.EventLogEntryType.Error);
}
}
if (queue.Handlers.Count == 0)
{
Thread.Sleep(500);
_Model.BasicReject(deliveryTag, true);
Interlocked.Decrement(ref _MessageHandlingCount);
ApplicationEventLog.WriteEntry("Flow", string.Format("No handlers to process message {0}", consumerTag), System.Diagnostics.EventLogEntryType.Error);
}
}
else
{
Thread.Sleep(500);
_Model.BasicReject(deliveryTag, true);
Interlocked.Decrement(ref _MessageHandlingCount);
ApplicationEventLog.WriteEntry("Flow", string.Format("HandleBasicDeliver: Failed to locate queue {0}", consumerTag), System.Diagnostics.EventLogEntryType.Error);
}
}
}
}
catch (System.Runtime.Serialization.SerializationException)
{
string path = GetBadMessageDirectory();
File.WriteAllBytes(Path.Combine(path,string.Concat(consumerTag,"_", Guid.NewGuid().ToString())),body);
_Model.BasicReject(deliveryTag, false);
Interlocked.Decrement(ref _MessageHandlingCount);
}
catch (Exception ex)
{
Thread.Sleep(500);
try
{
if (_Model != null)
_Model.BasicReject(deliveryTag, true);
Interlocked.Decrement(ref _MessageHandlingCount);
}
catch { }
ApplicationEventLog.WriteEntry("Flow", ex.ToString(), System.Diagnostics.EventLogEntryType.Error);
}
}