public void Create_Default_Serialized()
{
var id = Guid.NewGuid();
var input = new RedisQueueCorrelationIdSerialized(id);
var test = new RedisQueueCorrelationId(input);
Assert.Equal(id.ToString(), test.Id.Value.ToString());
Assert.True(test.HasValue);
}
/// <inheritdoc />
public RedisMessage Handle(ReceiveMessageQuery query)
{
byte[] message = null;
byte[] headers = null;
string messageId;
var poisonMessage = false;
RedisQueueCorrelationIdSerialized correlationId = null;
try
{
var unixTimestamp = _unixTimeFactory.Create().GetCurrentUnixTimestampMilliseconds();
RedisValue[] result;
if (query.MessageId != null && query.MessageId.HasValue)
{
result = _dequeueRpcLua.Execute(query.MessageId.Id.Value.ToString(), unixTimestamp);
}
else
{
result = _dequeueLua.Execute(unixTimestamp);
}
if (result == null || result.Length == 1 && !result[0].HasValue || !result[0].HasValue)
{
return(null);
}
if (!result[1].HasValue)
{
//at this point, the record has been de-queued, but it can't be processed.
poisonMessage = true;
}
messageId = result[0];
var id = new RedisQueueId(messageId);
query.MessageContext.MessageId = id;
if (!poisonMessage)
{
message = result[1];
headers = result[2];
if (result[3].HasValue)
{
if (result[3].TryParse(out long messageExpiration))
{
if (messageExpiration - unixTimestamp < 0)
{
//message has expired
_deleteMessage.Handle(new DeleteMessageCommand(new RedisQueueId(messageId)));
return(new RedisMessage(messageId, null, true));
}
}
}
}
}
catch (Exception error)
{
throw new ReceiveMessageException("Failed to dequeue a message", error);
}
if (poisonMessage)
{
//at this point, the record has been de-queued, but it can't be processed.
throw new PoisonMessageException(
"An error has occurred trying to re-assemble a message de-queued from Redis; a messageId was returned, but the LUA script returned a null message. The message payload has most likely been lost.", null,
new RedisQueueId(messageId), new RedisQueueCorrelationId(Guid.Empty),
null, null);
}
try
{
var allHeaders = _serializer.InternalSerializer.ConvertBytesTo <IDictionary <string, object> > (headers);
correlationId = (RedisQueueCorrelationIdSerialized)allHeaders[_redisHeaders.CorrelationId.Name];
var messageGraph = (MessageInterceptorsGraph)allHeaders[_redisHeaders.Headers.StandardHeaders.MessageInterceptorGraph.Name];
var messageData = _serializer.Serializer.BytesToMessage <MessageBody>(message, messageGraph);
var newMessage = _messageFactory.Create(messageData.Body, allHeaders);
return(new RedisMessage(
messageId,
_receivedMessageFactory.Create(
newMessage,
new RedisQueueId(messageId),
new RedisQueueCorrelationId(correlationId.Id)), false));
}
catch (Exception error)
{
//at this point, the record has been de-queued, but it can't be processed.
throw new PoisonMessageException(
"An error has occurred trying to re-assemble a message de-queued from redis", error,
new RedisQueueId(messageId), new RedisQueueCorrelationId(correlationId),
message, headers);
}
}
