private static async Task <List <string> > GetQiStreamsAsync()
{
string qiNamespaceName = ConfigurationManager.AppSettings["QiNamespace"];
string qiQuery = ConfigurationManager.AppSettings["QiStreamFilter"];
QiClientSlim qiClient = new QiClientSlim();
return(await qiClient.GetQiStreamsAsync(qiNamespaceName, qiQuery));
}
private static async Task <Task> GetAndSendAsync(QiClientSlim qiClient, string namespaceId, string streamId, SimplePublisher busWriter, TraceWriter log = null)
{
string snapshotJson = await qiClient.GetLatestValueJsonAsync(namespaceId, streamId).ConfigureAwait(false);
if (snapshotJson == null)
{
return(Task.CompletedTask);
}
string identifiedSnapshotJson = $"{{ streamId: \"{streamId}\", values: {snapshotJson} }}";
return(busWriter.PublishAsync(identifiedSnapshotJson));
}
public static async Task Run([ServiceBusTrigger("qillion", AccessRights.Manage, Connection = "QillionTriggerBus")] BatchEntity batchEntity, TraceWriter log, Microsoft.Azure.WebJobs.ExecutionContext context)
{
log.Info($"Qi stream batch worker processing batch {batchEntity.id}");
BindingRedirector.RedirectAssembly("Google.Apis.Auth", new Version("1.28.0.0"), "4b01fa6e34db77ab");
BindingRedirector.RedirectAssembly("Google.Apis.Auth.PlatformServices", new Version("1.28.0.0"), "4b01fa6e34db77ab");
QiStreamBatchRepository repository = new QiStreamBatchRepository();
List <string> streamIds = await repository.GetStreamsInBatch(batchEntity.id);
string qiNamespace = ConfigurationManager.AppSettings["QiNamespace"];
QiClientSlim qiClient = new QiClientSlim();
await GetAndSendSnapshotsAsync(qiNamespace, streamIds, qiClient, context, log);
}
private static async Task GetAndSendSnapshotsAsync(string namespaceId, List <string> streamIds, QiClientSlim qiClient,
Microsoft.Azure.WebJobs.ExecutionContext context, TraceWriter log = null)
{
SimplePublisher busWriter = GetGoogleBusWriter(context);
List <Task <Task> > snapshotTasks = new List <Task <Task> >(streamIds.Count);
foreach (string streamId in streamIds)
{
string streamIdCopy = streamId;
Task <Task> snapshotTask = GetAndSendAsync(qiClient, namespaceId, streamIdCopy, busWriter, log);
snapshotTasks.Add(snapshotTask);
}
await Task.WhenAll(snapshotTasks);
//Wait until messages are flushed from the bus
await busWriter.ShutdownAsync(CancellationToken.None);
var publishingTasks = snapshotTasks.Select(outerTask => outerTask.Result);
await Task.WhenAll(publishingTasks);
}
