public ProviderData(IAzureServiceBusInstance busInstance, string lockToken, long sequenceNumber, string markerMessageLockToken)
{
this.busInstance = busInstance;
LockToken = lockToken;
this.sequenceNumber = sequenceNumber;
this.markerMessageLockToken = markerMessageLockToken;
}
private IncomingMessage BuildMessage(Message azureMessage, IList <Message> deferredMessages, IAzureServiceBusInstance busInstance)
{
Message markerMessage = null;
if (azureMessage.IsDeferredMarkerMessage())
{
markerMessage = azureMessage;
azureMessage = deferredMessages.Single(
message => message.SystemProperties.SequenceNumber == markerMessage.DeferredMessageSequenceNumber());
}
// TODO Pluggable serialiser
var messageTypeNamesString = azureMessage.UserProperties[TransportHeaders.MessageTypeNames].ToString();
// TODO Allocations review
var messageTypeNames = messageTypeNamesString.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
var bodyJson = Encoding.UTF8.GetString(azureMessage.Body);
var bodyType = typeMap.GetTypeByName(messageTypeNames[0]);
var body = JsonConvert.DeserializeObject(bodyJson, bodyType);
var headers = azureMessage
.UserProperties
.Where(property => !TransportHeaders.IsTransportHeader(property.Key))
.Select(BuildHeader);
return(new IncomingMessage(
id: azureMessage.MessageId,
body: body,
messageTypeNames: messageTypeNames,
dequeuedUtc: DateTime.UtcNow,
dequeuedCount: azureMessage.SystemProperties.DeliveryCount,
lockExpiresUtc: azureMessage.SystemProperties.LockedUntilUtc,
headers: new HeaderCollection(headers),
providerData: new ProviderData(
busInstance,
azureMessage.SystemProperties.LockToken,
azureMessage.SystemProperties.SequenceNumber,
markerMessage?.SystemProperties.LockToken)));
}
private async Task <IList <Message> > FetchDeferredMessages(IList <Message> originalMessages, IAzureServiceBusInstance busInstance)
{
var sequenceNumbers = from originalMessage in originalMessages
where originalMessage.IsDeferredMarkerMessage()
select originalMessage.DeferredMessageSequenceNumber();
return(await busInstance
.ReceiveDeferredMessages(sequenceNumbers)
.ConfigureAwait(false));
}
public NoFailoverStrategy(IEnumerable <IAzureServiceBusInstance> busInstances)
{
busInstance = busInstances.First();
}
