private async Task SaveChangesAndReIndex(Farm farm)
{
//create/delete/update a product also means we need to reindex the farm entry, hence modify the UpdateDateTime
db.Entry(farm).State = EntityState.Modified;
farm.UpdateDateTime = DateTime.Now;
await db.SaveChangesAsync();
//db was saved successfully, inform worker role via IndexUpdatingQueue
QueueHelper.Send(farm, EUpdateMethod.Update);
}
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 static Document CreateDocumentFromFarm(Farm farm)
{
var doc = new Document();
doc.Add(new Field("id", farm.FarmId.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED, Field.TermVector.NO));
doc.Add(new Field("name", farm.Name, Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO));
doc.Add(new NumericField("latitude", Field.Store.YES, true).SetDoubleValue(farm.Latitude));
doc.Add(new NumericField("longitude", Field.Store.YES, true).SetDoubleValue(farm.Longitude));
AddFieldIfNotNullOrEmpty(doc, "website", farm.Website);
AddFieldIfNotNullOrEmpty(doc, "phone_number", farm.PhoneNumber);
foreach (var product in farm.Products)
{
doc.Add(new Field("product_id", product.ProductId.ToString(), Field.Store.YES, Field.Index.NO, Field.TermVector.NO));
doc.Add(new Field("product_inStock", product.InStock.ToString(), Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO));
doc.Add(new Field("product_name", product.Name, Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.NO));
AddFieldIfNotNullOrEmpty(doc, "product_description", product.Description, Field.Index.ANALYZED);
}
return doc;
}
private static void DeleteFarmFromIndex(Farm farm, IndexWriter indexWriter, ApplicationDbContext db)
{
indexWriter.DeleteDocuments(new Term("id", farm.FarmId.ToString()));
db.Farms.Remove(farm);
}
private static void UpdateFarmInIndex(Farm farm, IndexWriter indexWriter, ApplicationDbContext db)
{
var doc = CreateDocumentFromFarm(farm);
indexWriter.UpdateDocument(new Term("id", farm.FarmId.ToString()), doc);
db.Entry(farm).State = EntityState.Modified;
farm.IndexDateTime = DateTime.Now;
}
private void AddFarmToIndex(Farm farm, IndexWriter indexWriter, ApplicationDbContext db)
{
var doc = CreateDocumentFromFarm(farm);
indexWriter.AddDocument(doc);
db.Entry(farm).State = EntityState.Modified;
farm.IndexDateTime = DateTime.Now;
}