//Step 3, Outer Loop
private List <CollectionsTaskLocal> RequestCollectionTasks(int collectionCapacity)
{
Logger.Log("RequestCollectionTasks");
//Hard Limit by Azure
int messageCount = Math.Min(collectionCapacity, 32);
//Get Q Messages
IEnumerable <CloudQueueMessage> queueMessages = StorageClientHelper.GetQueueMessages(QueueType.Collections, _sourceType, messageCount);
//Convert to Tasks
List <CollectionsTaskLocal> collectionsTaskList = new List <CollectionsTaskLocal>();
if (queueMessages == null)
{
return(collectionsTaskList);
}
else
{
Logger.Log("Received #" + queueMessages.Count <CloudQueueMessage>().ToString() + " messages");
}
foreach (CloudQueueMessage qm in queueMessages)
{
string messag = qm.AsString;
CollectionsTaskLocal task = CollectionsTaskHelper.MessageToLocalTask(messag);
task.QueueMessage = qm;
collectionsTaskList.Add(task);
}
return(collectionsTaskList);
}
public void ProccesCollectionTasks()
{
bool loop = true;
while (loop)
{
IEnumerable <CloudQueueMessage> queueMessages = StorageClientHelper.GetQueueMessages(QueueType.Processing, SourceType.Twitter, 32);
int messageCount = queueMessages.Count <CloudQueueMessage>();
if ((messageCount < 1) || (messageCount == null))
{
Console.WriteLine("No Messages");
loop = false;
}
else
{
Console.WriteLine("GetQueueMessage = " + queueMessages.Count <CloudQueueMessage>());
foreach (CloudQueueMessage queueMessage in queueMessages)
{
//1. Get Queue
HaystackLibrary.CollectionTask newTask = CollectionsTaskHelper.MessageToDatabaseTask(queueMessage.AsString);
string taskString = CollectionsTaskHelper.DatabaseTaskString(newTask);
Console.WriteLine(taskString);
//2. Get Blob
CloudBlob blob = StorageClientHelper.GetBlobReference(newTask.Project, newTask.BlobName);
string blobText = blob.DownloadText();
//TODO: Blob Validate Hash
Console.WriteLine(blobText);
//3. Update Database: Results
//TODO: Update Database: Results
//4. Update Database: Tasks
LinqToSqlDataContext context = new LinqToSqlDataContext();
CollectionTask oldTask = (from t in context.CollectionTasks
where t.Id == newTask.Id
orderby t.Id descending
select t).First <CollectionTask>();
oldTask.State = CollectionsTaskState.Processed.ToString();
oldTask.Collected = newTask.Collected;
oldTask.Station = newTask.Station;
oldTask.Collector = newTask.Collector;
oldTask.BlobName = newTask.BlobName;
oldTask.BlobHash = blob.Attributes.Properties.ContentMD5;
oldTask.Processed = DateTime.UtcNow;
context.SubmitChanges();
//5. Update Blob Metadata
blob.Attributes.Metadata["State"] = CollectionsTaskState.Processed.ToString();
//6. Delete Queue
StorageClientHelper.DeleteQueueMessage(QueueType.Processing, SourceType.Twitter, queueMessage);
//7. Print Success
string output = CollectionsTaskHelper.DatabaseTaskString(newTask);
Console.WriteLine(output);
}
}
}
}