/// <summary>
/// This is the main entry point for your service replica.
/// This method executes when this replica of your service becomes primary and has write status.
/// </summary>
/// <param name="cancellationToken">Canceled when Service Fabric needs to shut down this service replica.</param>
protected override async Task RunAsync(CancellationToken cancellationToken)
{
IReliableDictionary <string, string> myDictionary = await StateManager.GetOrAddAsync <IReliableDictionary <string, string> >("offsetDictionary");
var eventHubClient = EventHubClient.CreateFromConnectionString(Config.EhConnectionString, Config.EhCommentPath);
EventHubClient publishClient = EventHubClient.CreateFromConnectionString(Config.EhConnectionString, Config.EhAnalyticPath);
while (true)
{
cancellationToken.ThrowIfCancellationRequested();
using (ITransaction tx = StateManager.CreateTransaction())
{
StateHandler stateHandler = new StateHandler(tx, StateManager);
EventReader reader = new EventReader(eventHubClient, stateHandler);
IEnumerable <AnalysedRedditComment> comments = await reader.GetComments();
IEnumerable <IReadOnlyDictionary <string, AnalysedRedditComment> > batches = BatchComments(comments, BatchSize);
foreach (IReadOnlyDictionary <string, AnalysedRedditComment> batch in batches)
{
LanguageAnalyzer languageAnalyzer = new LanguageAnalyzer();
SentimentAnalyzer sentimentAnalyzer = new SentimentAnalyzer();
KeyPhraseAnalyzer keyPhraseAnalyzer = new KeyPhraseAnalyzer();
await languageAnalyzer.DoAnalysis(batch); // do language analysis first
await sentimentAnalyzer.DoAnalysis(batch);
await keyPhraseAnalyzer.DoAnalysis(batch);
ProcessMessages(batch.Values, publishClient);
}
// If an exception is thrown before calling CommitAsync, the transaction aborts, all changes are
// discarded, and nothing is saved to the secondary replicas.
await tx.CommitAsync();
}
await Task.Delay(TimeSpan.FromSeconds(PullDelay), cancellationToken);
}
// ReSharper disable once FunctionNeverReturns
}