public IList<PersistentMessage> GetMessagesToSendAndMarkThemAsInFlight(int maxNumberOfMessage, int maxSizeOfMessagesInTotal, out Endpoint endPoint)
{
Api.MoveBeforeFirst(session, outgoing);
endPoint = null;
string queue = null;
var messages = new List<PersistentMessage>();
while (Api.TryMoveNext(session, outgoing))
{
var msgId = new Guid(Api.RetrieveColumn(session, outgoing, ColumnsInformation.OutgoingColumns["msg_id"]));
var value = (OutgoingMessageStatus)Api.RetrieveColumnAsInt32(session, outgoing, ColumnsInformation.OutgoingColumns["send_status"]).Value;
var timeAsDate = Api.RetrieveColumnAsDouble(session, outgoing, ColumnsInformation.OutgoingColumns["time_to_send"]).Value;
var time = DateTime.FromOADate(timeAsDate);
logger.DebugFormat("Scanning message {0} with status {1} to be sent at {2}", msgId, value, time);
if (value != OutgoingMessageStatus.Ready)
continue;
if (time > DateTime.Now)
continue;
var rowEndpoint = new Endpoint(
Api.RetrieveColumnAsString(session, outgoing, ColumnsInformation.OutgoingColumns["address"]),
Api.RetrieveColumnAsInt32(session, outgoing, ColumnsInformation.OutgoingColumns["port"]).Value
);
if (endPoint == null)
endPoint = rowEndpoint;
if (endPoint.Equals(rowEndpoint) == false)
continue;
var rowQueue = Api.RetrieveColumnAsString(session, outgoing, ColumnsInformation.OutgoingColumns["queue"], Encoding.Unicode);
if (queue == null)
queue = rowQueue;
if(queue != rowQueue)
continue;
logger.DebugFormat("Adding message {0} to returned messages", msgId);
var bookmark = new MessageBookmark();
Api.JetGetBookmark(session, outgoing, bookmark.Bookmark, bookmark.Size, out bookmark.Size);
var headerAsQueryString = Api.RetrieveColumnAsString(session, outgoing, ColumnsInformation.OutgoingColumns["headers"],Encoding.Unicode);
messages.Add(new PersistentMessage
{
Id = new MessageId
{
SourceInstanceId = instanceId,
MessageIdentifier = msgId
},
Headers = HttpUtility.ParseQueryString(headerAsQueryString),
Queue = rowQueue,
SubQueue = Api.RetrieveColumnAsString(session, outgoing, ColumnsInformation.OutgoingColumns["subqueue"], Encoding.Unicode),
Priority = Api.RetrieveColumnAsInt16(session, outgoing, ColumnsInformation.OutgoingColumns["priority"]).Value,
SentAt = DateTime.FromOADate(Api.RetrieveColumnAsDouble(session, outgoing, ColumnsInformation.OutgoingColumns["sent_at"]).Value),
Data = Api.RetrieveColumn(session, outgoing, ColumnsInformation.OutgoingColumns["data"]),
Bookmark = bookmark
});
using (var update = new Update(session, outgoing, JET_prep.Replace))
{
Api.SetColumn(session, outgoing, ColumnsInformation.OutgoingColumns["send_status"],
(int)OutgoingMessageStatus.InFlight);
update.Save();
}
logger.DebugFormat("Marking output message {0} as InFlight", msgId);
if (maxNumberOfMessage < messages.Count)
break;
if (maxSizeOfMessagesInTotal < messages.Sum(x => x.Data.Length))
break;
}
return messages;
}
public IList<PersistentMessage> GetMessagesToSendAndMarkThemAsInFlight(int maxNumberOfMessage, int maxSizeOfMessagesInTotal, out Endpoint endPoint)
{
Api.MoveBeforeFirst(session, outgoing);
endPoint = null;
string queue = null;
var messages = new List<PersistentMessage>();
while (Api.TryMoveNext(session, outgoing))
{
var msgId = new Guid(Api.RetrieveColumn(session, outgoing, ColumnsInformation.OutgoingColumns["msg_id"]));
var value = (OutgoingMessageStatus)Api.RetrieveColumnAsInt32(session, outgoing, ColumnsInformation.OutgoingColumns["send_status"]).Value;
var timeAsDate = Api.RetrieveColumnAsDouble(session, outgoing, ColumnsInformation.OutgoingColumns["time_to_send"]).Value;
var time = DateTime.FromOADate(timeAsDate);
logger.DebugFormat("Scanning message {0} with status {1} to be sent at {2}", msgId, value, time);
if (value != OutgoingMessageStatus.Ready)
continue;
// Check if the message has expired, and move it to the outgoing history.
var deliverBy = Api.RetrieveColumnAsDouble(session, outgoing, ColumnsInformation.OutgoingColumns["deliver_by"]);
if (deliverBy != null)
{
var deliverByTime = DateTime.FromOADate(deliverBy.Value);
if (deliverByTime < DateTime.Now)
{
logger.InfoFormat("Outgoing message {0} was not succesfully sent by its delivery time limit {1}", msgId, deliverByTime);
var numOfRetries = Api.RetrieveColumnAsInt32(session, outgoing, ColumnsInformation.OutgoingColumns["number_of_retries"]).Value;
MoveFailedMessageToOutgoingHistory(numOfRetries, msgId);
continue;
}
}
var maxAttempts = Api.RetrieveColumnAsInt32(session, outgoing, ColumnsInformation.OutgoingColumns["max_attempts"]);
if (maxAttempts != null)
{
var numOfRetries = Api.RetrieveColumnAsInt32(session, outgoing, ColumnsInformation.OutgoingColumns["number_of_retries"]).Value;
if (numOfRetries > maxAttempts)
{
logger.InfoFormat("Outgoing message {0} has reached its max attempts of {1}", msgId, maxAttempts);
MoveFailedMessageToOutgoingHistory(numOfRetries, msgId);
continue;
}
}
if (time > DateTime.Now)
continue;
var rowEndpoint = new Endpoint(
Api.RetrieveColumnAsString(session, outgoing, ColumnsInformation.OutgoingColumns["address"]),
Api.RetrieveColumnAsInt32(session, outgoing, ColumnsInformation.OutgoingColumns["port"]).Value
);
if (endPoint == null)
endPoint = rowEndpoint;
if (endPoint.Equals(rowEndpoint) == false)
continue;
var rowQueue = Api.RetrieveColumnAsString(session, outgoing, ColumnsInformation.OutgoingColumns["queue"], Encoding.Unicode);
if (queue == null)
queue = rowQueue;
if(queue != rowQueue)
continue;
var bookmark = new MessageBookmark();
Api.JetGetBookmark(session, outgoing, bookmark.Bookmark, bookmark.Size, out bookmark.Size);
logger.DebugFormat("Adding message {0} to returned messages", msgId);
var headerAsQueryString = Api.RetrieveColumnAsString(session, outgoing, ColumnsInformation.OutgoingColumns["headers"],Encoding.Unicode);
messages.Add(new PersistentMessage
{
Id = new MessageId
{
SourceInstanceId = instanceId,
MessageIdentifier = msgId
},
Headers = HttpUtility.ParseQueryString(headerAsQueryString),
Queue = rowQueue,
SubQueue = Api.RetrieveColumnAsString(session, outgoing, ColumnsInformation.OutgoingColumns["subqueue"], Encoding.Unicode),
SentAt = DateTime.FromOADate(Api.RetrieveColumnAsDouble(session, outgoing, ColumnsInformation.OutgoingColumns["sent_at"]).Value),
Data = Api.RetrieveColumn(session, outgoing, ColumnsInformation.OutgoingColumns["data"]),
Bookmark = bookmark
});
using (var update = new Update(session, outgoing, JET_prep.Replace))
{
Api.SetColumn(session, outgoing, ColumnsInformation.OutgoingColumns["send_status"],
(int)OutgoingMessageStatus.InFlight);
update.Save();
}
logger.DebugFormat("Marking output message {0} as InFlight", msgId);
if (maxNumberOfMessage < messages.Count)
break;
if (maxSizeOfMessagesInTotal < messages.Sum(x => x.Data.Length))
break;
}
return messages;
}