public async Task Run(
[ServiceBusTrigger("%ServiceBusQueueName%", Connection = "ServiceBusConnectionString")]
SyncMessage message,
[ServiceBus("%ServiceBusNormalCompetitionsQueueName%", EntityType.Topic, Connection = "ServiceBusConnectionString")] IAsyncCollector <Message> output)
{
var source = factory.GetSource(message.ConnectorType);
var retriever = source.GetRetriever(message);
var competitions = await retriever.GetAllAsync();
var tasks = competitions
.Select(x => new CompetitionMessage
{
Name = x.Name,
Place = x.Place,
SportType = x.SportType,
StartDate = x.StartDate,
Teams = x.Teams.Select(m => new TeamMessage {
Name = m.Name
}).ToList(),
UniqueId = x.UniqueId,
LiveUri = x.LiveUri
})
.Select(competition => output.AddAsync(competition.ToBrokeredMessage(competition.UniqueId.ToString())))
.ToList();
await Task.WhenAll(tasks);
}
public async Task Run([OrchestrationTrigger] IDurableOrchestrationContext context)
{
//todo: when message is received, the function can be scheduled till time T,
//e.g. till 3-5 minutes prior to match start, after that it can change it's polling behavior from
// 60 days (e.g. time from the match info is parsed) - simply it waits, without being billed till the moment
// to 3 every 2 secs while the match is finished and exits.
//Multiple sources can be queried from this 1 function, for instance if we've specified them in a message, that scheduled the function.
var message = context.GetInput <LiveSyncMessage>();
int pollingInterval = message.PollingIntervalInSec;
DateTime expiryTime = message.FinishTime;
if (message.StartTime >= context.CurrentUtcDateTime.AddMinutes(1))
{
//Orchestration was scheduled, and waits till the start of a match, without billing.
var sleepUntil = message.StartTime - context.CurrentUtcDateTime;
var nextCheck = context.CurrentUtcDateTime.AddSeconds(sleepUntil.TotalSeconds);
await context.CreateTimer(nextCheck, CancellationToken.None);
}
while (DateTime.UtcNow < expiryTime)
{
//todo: if match has ended or was cancelled - skip.
var source = factory.GetSource(message.ConnectorType);
var retriever = source.GetRetriever(message);
//todo: currently only all is supported for the demo
//todo: can support almost unlimited amount of calls to source apis, that can be aggregated in this point.
DurableHttpResponse response = await context.CallHttpAsync(System.Net.Http.HttpMethod.Get, message.Uri);
var stats = await retriever.GetLiveAsync(response.Content);
var result = new CompetitionStatsMessage
{
CompetitionId = message.CompetitionUniqueId,
Score = stats.Score
};
if (!String.IsNullOrEmpty(result.CompetitionId))
{
await context.CallActivityAsync("LiveDataFunctionResultServiceBus", result);
// Orchestration sleeps until this time.
var nextCheck = context.CurrentUtcDateTime.AddSeconds(pollingInterval);
await context.CreateTimer(nextCheck, CancellationToken.None);
}
}
}
