public static void Send(Farm farm, EUpdateMethod updateMethod)
{
var dto = new UpdateIndexDto
{
FarmId = farm.FarmId,
// UpdateTime = farm.UpdateDateTime,
UpdateMethod = updateMethod
};
QueueClient.Send(new BrokeredMessage(dto));
}
private async Task HandleMessage(UpdateIndexDto dto)
{
using (var db = new ApplicationDbContext())
{
Farm farm;
switch (dto.UpdateMethod)
{
case EUpdateMethod.Create:
farm =
await db.Farms.Include(f => f.Products).Where(f => f.FarmId == dto.FarmId).FirstAsync();
//good idea but different time zone or system time on different servers do not allow to use a timestamp to filter out old messages
if (farm != null && farm.UpdateDateTime > farm.IndexDateTime) // && farm.UpdateDateTime == dto.UpdateTime)
{
AddFarmToIndex(farm, _indexWriter, db);
await db.SaveChangesAsync();
_indexWriter.Commit();
}
break;
case EUpdateMethod.Update:
farm =
await db.Farms.Include(f => f.Products).Where(f => f.FarmId == dto.FarmId).FirstAsync();
if (farm != null && farm.UpdateDateTime > farm.IndexDateTime) // && farm.UpdateDateTime == dto.UpdateTime)
{
UpdateFarmInIndex(farm, _indexWriter, db);
await db.SaveChangesAsync();
_indexWriter.Commit();
}
break;
case EUpdateMethod.Delete:
farm = await db.Farms.FindAsync(dto.FarmId);
if (farm != null)
{
DeleteFarmFromIndex(farm, _indexWriter, db);
await db.SaveChangesAsync();
_indexWriter.Commit();
}
break;
}
}
}