private IEnumerable <DeadLetter> ApplyPaging(IEnumerable <DeadLetter> query, GetDeadLetterMessages request)
{
query = query
.Skip(request.MessageFilters.PageIndex * request.MessageFilters.PageSize)
.Take(request.MessageFilters.PageSize);
return(query);
}
public async Task <PagedMessages <DeadLetter> > Handle(GetDeadLetterMessages request, CancellationToken cancellationToken)
{
IEnumerable <DeadLetter> messages = await _serviceBusReader.ReadDeadLetterMessagesAsync(request.MessageFilters.SbQueue);
messages = ApplyFilters(messages, request);
messages = messages.OrderByDescending(m => m.MessageDate);
int count = messages.Count();
messages = ApplyPaging(messages, request);
return(new PagedMessages <DeadLetter>()
{
Messages = messages,
PageIndex = request.MessageFilters.PageIndex,
PageSize = request.MessageFilters.PageSize,
TotalRecords = count
});
}
private IEnumerable <DeadLetter> ApplyFilters(IEnumerable <DeadLetter> query, GetDeadLetterMessages request)
{
if (request.MessageFilters.MessageType != null)
{
string messageType = request.MessageFilters.MessageType.AssemblyQualifiedName;
query = query.Where(m => m.Message.MessageType == messageType);
}
if (request.MessageFilters.DateFrom != null)
{
query = query.Where(m => m.MessageDate >= request.MessageFilters.DateFrom);
}
if (request.MessageFilters.DateTo != null)
{
query = query.Where(m => m.MessageDate <= request.MessageFilters.DateTo);
}
if (!string.IsNullOrWhiteSpace(request.MessageFilters.MessageId))
{
query = query.Where(m => m.Message.MessageId == request.MessageFilters.MessageId);
}
if (!string.IsNullOrWhiteSpace(request.MessageFilters.CorrelationId))
{
query = query.Where(m => m.Message.CorrelationId == request.MessageFilters.CorrelationId);
}
return(query);
}