private void LoadFromPersistentStorage(CloudTable table)
{
TableContinuationToken?token = null;
var entities = new List <DynamicTableEntity>();
do
{
var queryResult = table.ExecuteQuerySegmented(new TableQuery(), token);
entities.AddRange(queryResult.Results);
token = queryResult.ContinuationToken;
} while (token != null);
foreach (var item in entities)
{
var vehicleJourneyAssignment = item.ToVehicleJourneyAssignment();
vehicleJourneyAssignmentCache.Put(vehicleJourneyAssignment);
}
}
protected override async Task Work(CancellationToken cancellationToken)
{
logger.LogInformation($"Connecting to RabbitMQ: {rabbitConnectionFactory.Uri}");
rabbitConnection = rabbitConnectionFactory.CreateConnection(nameof(VehicleJourneyAssignmentLoaderWorker));
rabbitChannel = rabbitConnection.CreateModel();
// The incomming exchange of ROI events.
var roiExchange = config.GetValue <string>("RabbitMQ:RoiExchange", "roi-json");
// The work queue is a per worker queue to distribute vehicle assignments.
var workQueue = config.GetValue("RabbitMQ:RoiWorkQueue", "rpsudp2json-roi-json-{machineName}").Replace("{machineName}", Environment.MachineName.ToLower());
var arguments = new Dictionary <string, object>
{
{ "x-message-ttl", 3 * 60 * 60 * 1000 } // 3 hours
};
rabbitChannel.QueueDeclare(workQueue, durable: false, exclusive: true, autoDelete: true, arguments);
rabbitChannel.QueueBind(workQueue, roiExchange, "vehicleJourneyAssignment.#");
var workerVehicleJourneyAssignmentConsumer = new EventConsumer <VehicleJourneyAssignmentEvent>(
action: e =>
{
vehicleJourneyAssignmentCache.Put(e.VehicleJourneyAssignment);
ResetWatchdog();
},
eventType: "vehicleJourneyAssignment",
logger: logger);
// TODO: Wait for initial load to complete in PersistentVehicleJourneyAssignmentWorker
logger.LogInformation($"Beginning to consume {workQueue}...");
rabbitChannel.BasicConsume(
queue: workQueue,
autoAck: true,
consumer: workerVehicleJourneyAssignmentConsumer);
await cancellationToken.WaitHandle.WaitOneAsync(CancellationToken.None);
}
