/// <summary>
/// Sets up the service with all necessare components. Gets all known storage sites and starts data readers for each of them.
/// </summary>
/// <param name="loggerFactory">A factory to create loggers from.</param>
/// <param name="configuration">The app configuration.</param>
/// <param name="locationsService">Provides storage sites.</param>
/// <param name="environmentalDataRepository">Repository of environmental data.</param>
/// <param name="dataDensityReducer">Data density reducing strategy.</param>
public EnvironmentService(ILoggerFactory loggerFactory,
IConfiguration configuration,
LocationsService locationsService,
IEnvironmentalDataRepository environmentalDataRepository,
IDataDensityReducer dataDensityReducer)
{
LoggerFactory = loggerFactory;
Logger = LoggerFactory.CreateLogger <EnvironmentService>();
LocationsService = locationsService;
EnvironmentalDataRepository = environmentalDataRepository;
SnapshotQueue = new ConcurrentQueue <EnvironmentSnapshot>();
DataDensityReducer = dataDensityReducer;
// Get Kafka endpoint
KafkaEndpoint = configuration.GetValue("Kafka", "");
if (string.IsNullOrEmpty(KafkaEndpoint))
{
throw new Exception("Invalid Kafka endpoint provided!");
}
else
{
Logger.LogInformation($"Configured Kafka endpoint `{KafkaEndpoint}`.");
}
// Start reading from snapshot queue
QueueConsumer = new TaskFactory().StartNew(() =>
{
while (true)
{
if (SnapshotQueue.TryDequeue(out EnvironmentSnapshot snapshot))
{
EnvironmentalDataRepository.RecordEnvironmentalSnapshot(snapshot);
}
else
{
Task.Delay(1000);
}
}
});
// Set up data readers for all existing storage sites
DataReaders = new Dictionary <Guid, EnvironmentalDataReader>();
foreach (StorageSite site in LocationsService.GetAllStorageSites())
{
CreateAndRegisterDataReader(site);
}
// Subscribe to the creation of new storage sites
LocationsService.Subscribe(this);
// TODO: check for failed readers (Kafka not available?) and restart them
}
public MockStatsProvider(ILocationsRepository locationsRepository, IMaterialBatchRepository batchRepository, IEnvironmentalDataRepository environmentalDataRepository)
{
LocationsRepository = locationsRepository;
BatchRepository = batchRepository;
EnvironmentalDataRepository = environmentalDataRepository;
}
/// <summary>
/// Initializes a new instance of the <see cref="StatsService"/> class.
/// </summary>
/// <param name="provider">The stats-related data provider..</param>
/// <param name="environmentalDataRepository">The environmental data repository.</param>
public StatsService(IStatsProvider provider, IEnvironmentalDataRepository environmentalDataRepository)
{
Provider = provider;
EnvironmentalDataRepository = environmentalDataRepository;
}