private static void UnmarshallResult(XmlUnmarshallerContext context, ChangeMessageVisibilityBatchResponse response)
{
int originalDepth = context.CurrentDepth;
int targetDepth = originalDepth + 1;
if (context.IsStartOfDocument)
targetDepth += 2;
while (context.ReadAtDepth(originalDepth))
{
if (context.IsStartElement || context.IsAttribute)
{
if (context.TestExpression("BatchResultErrorEntry", targetDepth))
{
var unmarshaller = BatchResultErrorEntryUnmarshaller.Instance;
var item = unmarshaller.Unmarshall(context);
response.Failed.Add(item);
continue;
}
if (context.TestExpression("ChangeMessageVisibilityBatchResultEntry", targetDepth))
{
var unmarshaller = ChangeMessageVisibilityBatchResultEntryUnmarshaller.Instance;
var item = unmarshaller.Unmarshall(context);
response.Successful.Add(item);
continue;
}
}
}
return;
}
/// <summary>
/// Unmarshaller the response from the service to the response class.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public override AmazonWebServiceResponse Unmarshall(XmlUnmarshallerContext context)
{
ChangeMessageVisibilityBatchResponse response = new ChangeMessageVisibilityBatchResponse();
context.Read();
int targetDepth = context.CurrentDepth;
while (context.ReadAtDepth(targetDepth))
{
if (context.IsStartElement)
{
if(context.TestExpression("ChangeMessageVisibilityBatchResult", 2))
{
UnmarshallResult(context, response);
continue;
}
if (context.TestExpression("ResponseMetadata", 2))
{
response.ResponseMetadata = ResponseMetadataUnmarshaller.Instance.Unmarshall(context);
}
}
}
return response;
}
private static void UnmarshallResult(XmlUnmarshallerContext context,ChangeMessageVisibilityBatchResponse response)
{
int originalDepth = context.CurrentDepth;
int targetDepth = originalDepth + 1;
if (context.IsStartOfDocument)
targetDepth += 2;
while (context.Read())
{
if (context.IsStartElement || context.IsAttribute)
{
if (context.TestExpression("ChangeMessageVisibilityBatchResultEntry", targetDepth))
{
response.Successful.Add(ChangeMessageVisibilityBatchResultEntryUnmarshaller.GetInstance().Unmarshall(context));
continue;
}
if (context.TestExpression("BatchResultErrorEntry", targetDepth))
{
response.Failed.Add(BatchResultErrorEntryUnmarshaller.GetInstance().Unmarshall(context));
continue;
}
}
else if (context.IsEndElement && context.CurrentDepth < originalDepth)
{
return;
}
}
return;
}
private void GenerateErrorsAndLog(ChangeMessageVisibilityBatchResponse result)
{
var failedMessages = String.Join("\n", result.Failed.Select(f => String.Format("Code:{0}, Id:{1}, Error:{2}", f.Code, f.Id, f.Message)));
var errorMessage = "There were 1 or more errors when sending messages on commit." + failedMessages;
if (result.Successful.Any())
errorMessage += "\n These message went through the loophole:\n" + String.Join(", ", result.Successful.Select(s => s.Id));
_log.Warn("Not all messages is set back to visible in the queue: {0} \n{1} failed.These will appear later when the global visibility time runs out. Details:\n{2}", _inputQueueAddress, result.Failed.Count, errorMessage);
}
public ChangeMessageVisibilityBatchResponse ChangeMessageVisibilityBatch(ChangeMessageVisibilityBatchRequest request)
{
if (request.Entries == null || request.Entries.Count <= 0)
{
throw new EmptyBatchRequestException("No entires in request");
}
if (request.Entries.Count > SqsQueueDefinition.MaxBatchCvItems)
{
throw new TooManyEntriesInBatchRequestException("Count of [{0}] exceeds limit of [{1]}".Fmt(request.Entries.Count, SqsQueueDefinition.MaxBatchCvItems));
}
var q = GetQueue(request.QueueUrl);
var response = new ChangeMessageVisibilityBatchResponse
{
Failed = new List<BatchResultErrorEntry>(),
Successful = new List<ChangeMessageVisibilityBatchResultEntry>()
};
var entryIds = new HashSet<string>();
foreach (var entry in request.Entries)
{
if (entryIds.Contains(entry.Id))
{
throw new BatchEntryIdsNotDistinctException("Duplicate Id of [{0}]".Fmt(entry.Id));
}
entryIds.Add(entry.Id);
var success = false;
BatchResultErrorEntry batchError = null;
try
{
success = q.ChangeVisibility(new ChangeMessageVisibilityRequest
{
QueueUrl = request.QueueUrl,
ReceiptHandle = entry.ReceiptHandle,
VisibilityTimeout = entry.VisibilityTimeout
});
}
catch (ReceiptHandleIsInvalidException rhex)
{
batchError = new BatchResultErrorEntry
{
Id = entry.Id,
Message = rhex.Message,
Code = rhex.ErrorCode
};
}
catch (MessageNotInflightException mfex)
{
batchError = new BatchResultErrorEntry
{
Id = entry.Id,
Message = mfex.Message,
Code = mfex.ErrorCode
};
}
if (success)
{
response.Successful.Add(new ChangeMessageVisibilityBatchResultEntry
{
Id = entry.Id
});
}
else
{
var entryToQueue = batchError ?? new BatchResultErrorEntry
{
Id = entry.Id,
Message = "FakeCvError",
Code = "123"
};
response.Failed.Add(entryToQueue);
}
}
return response;
}
