/// <summary>
/// Constructor for IotHub service implementation
/// </summary>
/// <param name="hubConnectionString"></param>
public IoTHubService(ConnectionString hubConnectionString)
{
_hubConnectionString = hubConnectionString;
_updateQueue = new BufferBlock <Tuple <INameRecord, NameServiceOperation> >(
new DataflowBlockOptions {
NameFormat = "Update (in IoTHubService) Id={1}",
EnsureOrdered = false,
MaxMessagesPerTask = DataflowBlockOptions.Unbounded,
CancellationToken = _open.Token
});
_listeners = new BroadcastBlock <Tuple <INameRecord, NameServiceEvent> >(null,
new DataflowBlockOptions {
NameFormat = "Notify (in IoTHubService) Id={1}",
EnsureOrdered = false,
MaxMessagesPerTask = DataflowBlockOptions.Unbounded,
CancellationToken = _open.Token
});
Write = DataflowBlockEx.Encapsulate(_updateQueue, _listeners);
_registryLoaded = new TaskCompletionSource <bool>();
_cache = new ConcurrentDictionary <Reference, IoTHubRecord>();
_cacheWorker = CacheWorker();
}
/// <summary>
/// Create service
/// </summary>
/// <param name="connectionString"></param>
public IoTHubService(string connectionString = null)
{
if (string.IsNullOrEmpty(connectionString))
{
connectionString = Environment.GetEnvironmentVariable("_HUB_CS");
}
if (string.IsNullOrEmpty(connectionString))
{
throw new ArgumentException("You must provide the iothubowner connection " +
"string, which can be obtained from the Azure IoT Hub portal. You must " +
"then either initialize the DefaultProvider class, or set the _HUB_CS " +
"environment variable.");
}
_hubConnectionString = ConnectionString.Parse(connectionString);
_updateQueue = new BufferBlock <Tuple <INameRecord, NameServiceOperation> >(
new DataflowBlockOptions {
NameFormat = "Update (in IoTHubService) Id={1}",
EnsureOrdered = false,
MaxMessagesPerTask = DataflowBlockOptions.Unbounded,
CancellationToken = _open.Token
});
_listeners = new BroadcastBlock <Tuple <INameRecord, NameServiceEvent> >(null,
new DataflowBlockOptions {
NameFormat = "Notify (in IoTHubService) Id={1}",
EnsureOrdered = false,
MaxMessagesPerTask = DataflowBlockOptions.Unbounded,
CancellationToken = _open.Token
});
Write = DataflowBlockEx.Encapsulate(_updateQueue, _listeners);
_registryLoaded = new TaskCompletionSource <bool>();
_cache = new ConcurrentDictionary <Reference, IoTHubRecord>();
_cacheWorker = CacheWorker();
}
