public static void Initialize()
{
// create the queue if it doesn't yet exist
// this call returns false if the queue was already created
if (Queue.CreateIfNotExist())
{
TraceLog.TraceInfo(String.Format("Created queue named '{0}'", queueName));
}
else
{
TraceLog.TraceDetail(String.Format("Queue named '{0}' already exists", queueName));
}
}
public static MQMessage <T> DequeueMessage <T>()
{
var msg = Queue.GetMessage(TimeSpan.FromMinutes(1.0d));
if (msg == null) // GetMessage doesn't block for a message
{
return(null);
}
TraceLog.TraceDetail(String.Format("Dequeued message ID {0} inserted {1}", msg.Id, msg.InsertionTime.ToString()));
byte[] bytes = msg.AsBytes;
var ms = new MemoryStream(bytes);
DataContractJsonSerializer dcs = new DataContractJsonSerializer(typeof(T));
T content = (T)dcs.ReadObject(ms);
MQMessage <T> returnMessage = new MQMessage <T>()
{
Content = content, MessageRef = msg
};
TraceLog.TraceInfo(String.Format("Dequeued a {0}: {1}", content.GetType().Name, content.ToString()));
return(returnMessage);
}
public override bool ProcessCreate(Item item)
{
// base method extracts intent
if (base.ProcessCreate(item))
{
return(true);
}
// assign category to the grocery item
// create a new category fieldvalue in the item to process
var categoryFV = item.GetFieldValue(FieldNames.Category, true);
// check if the category for this item's name has already been saved under the $User/Grocery list
// in this case, store the category in the incoming item
var groceryCategoryFV = GetGroceryCategoryFieldValue(item);
if (groceryCategoryFV != null && groceryCategoryFV.Value != null)
{
categoryFV.Value = groceryCategoryFV.Value;
return(true);
}
// get the "intent" which in this case is the normalized name
var intentName = item.Name.ToLower();
var intentFV = item.GetFieldValue(ExtendedFieldNames.Intent);
if (intentFV != null && intentFV.Value != null)
{
intentName = intentFV.Value;
}
// set up the grocery API endpoint
GroceryAPI gApi = new GroceryAPI();
gApi.EndpointBaseUri = string.Format("{0}{1}/", HostEnvironment.DataServicesEndpoint, "Grocery");
TraceLog.TraceDetail("GroceryAPI Endpoint: " + gApi.EndpointBaseUri);
// try to find the category from the local Grocery Controller
try
{
var results = gApi.Query(GroceryQueries.GroceryCategory, intentName).ToList();
// this should only return one result
if (results.Count > 0)
{
// get the category
foreach (var entry in results)
{
categoryFV.Value = entry[GroceryQueryResult.Category];
if (!String.IsNullOrEmpty(entry[GroceryQueryResult.ImageUrl]))
{
item.GetFieldValue(FieldNames.Picture, true).Value = entry[GroceryQueryResult.ImageUrl];
}
// only grab the first category
break;
}
TraceLog.TraceInfo(String.Format("Grocery API assigned {0} category to item {1}", categoryFV.Value, item.Name));
return(true);
}
}
catch (Exception ex)
{
TraceLog.TraceException("Grocery API or database commit failed", ex);
}
// use the Supermarket API to get the grocery category
SupermarketAPI smApi = new SupermarketAPI();
#if FALSE // use the synchronous codepath for now
// execute the call asynchronously so as to not block the response
smApi.BeginQuery(SupermarketQueries.SearchByProductName, item.Name, new AsyncCallback((iar) =>
{
try
{
var results = smApi.EndQuery(iar);
// find the item using a new context
var context = Storage.NewUserContext;
var groceryItem = context.Items.Single(i => i.ID == item.ID);
FieldValue categoryFV = groceryItem.GetFieldValue(FieldNames.Category, true);
// get the category
foreach (var entry in results)
{
categoryFV.Value = entry[SupermarketQueryResult.Category];
// only grab the first category
TraceLog.TraceInfo(String.Format("ProcessCreate: assigned {0} category to item {1}", categoryFV.Value, item.Name));
return(true);
}
}
catch (Exception ex)
{
TraceLog.TraceException("ProcessCreate: Supermarket API or database commit failed", ex);
}
}), null);
#else
try
{
var results = smApi.Query(SupermarketQueries.SearchByProductName, intentName);
// get the category and image
foreach (var entry in results)
{
categoryFV.Value = entry[SupermarketQueryResult.Category];
if (!String.IsNullOrEmpty(entry[SupermarketQueryResult.Image]))
{
item.GetFieldValue(FieldNames.Picture, true).Value = entry[SupermarketQueryResult.Image];
}
// write the data to the blob store
BlobStore.WriteBlobData(BlobStore.GroceryContainerName, entry[SupermarketQueryResult.Name], entry.ToString());
// only grab the first category
TraceLog.TraceInfo(String.Format("Supermarket API assigned {0} category to item {1}", categoryFV.Value, item.Name));
return(true);
}
}
catch (Exception ex)
{
TraceLog.TraceException("Supermarket API or database commit failed", ex);
}
#endif
return(false);
}
// Create and add an Intent FieldValue to the item
protected void CreateIntentFieldValue(Item item, string intent)
{
item.GetFieldValue(ExtendedFieldNames.Intent, true).Value = intent;
TraceLog.TraceDetail(String.Format("Assigned {0} intent to item {1}", intent, item.Name));
}