private static AMQPConfig PrepareAMQPConfig(string connectionString, string hubName,
string messageSubject, string messageDeviceId, string messageDeviceDisplayName)
{
try
{
NamespaceManager nsmgr = NamespaceManager.CreateFromConnectionString(connectionString);
EventHubDescription desc = nsmgr.GetEventHub(hubName);
foreach (var rule in desc.Authorization)
{
var accessAuthorizationRule = rule as SharedAccessAuthorizationRule;
if (accessAuthorizationRule == null)
{
continue;
}
if (!accessAuthorizationRule.Rights.Contains(AccessRights.Send))
{
continue;
}
string amqpAddress = string.Format("amqps://{0}:{1}@{2}",
accessAuthorizationRule.KeyName,
Uri.EscapeDataString(accessAuthorizationRule.PrimaryKey), nsmgr.Address.Host);
AMQPConfig amqpConfig = new AMQPConfig
{
AMQPSAddress = amqpAddress,
EventHubName = hubName,
EventHubDeviceDisplayName =
string.IsNullOrEmpty(messageSubject) ? "SensorGatewayService" : messageSubject,
EventHubDeviceId =
string.IsNullOrEmpty(messageDeviceId)
? "a94cd58f-4698-4d6a-b9b5-4e3e0f794618"
: messageDeviceId,
EventHubMessageSubject =
string.IsNullOrEmpty(messageDeviceDisplayName) ? "gtsv" : messageDeviceDisplayName
};
return(amqpConfig);
}
}
catch (Exception)
{
}
return(null);
}
private static GatewayService CreateGateway(AMQPConfig amqpConfig)
{
try
{
var _gatewayQueue = new GatewayQueue <QueuedItem>();
var _AMPQSender = new AMQPSender <string>(
amqpConfig.AMQPSAddress,
amqpConfig.EventHubName,
amqpConfig.EventHubMessageSubject,
amqpConfig.EventHubDeviceId,
amqpConfig.EventHubDeviceDisplayName,
_Logger
);
var _batchSenderThread = new BatchSenderThread <QueuedItem, string>(
_gatewayQueue,
_AMPQSender,
null,
m => m.JsonData,
_Logger);
_batchSenderThread.Start();
GatewayService service = new GatewayService(
_gatewayQueue,
_batchSenderThread
)
{
Logger = _Logger
};
service.OnDataInQueue += (data) => _batchSenderThread.Process();
_Logger.Flush();
return(service);
}
catch (Exception ex)
{
_Logger.LogError("Exception on creating Gateway: " + ex.Message);
}
return(null);
}
private static void InitWorkerConfiguration()
{
AppConfiguration config = Loader.GetConfig(_Logger);
IEnumerable <RawXMLWithHeaderToJsonReader> readers = PrepareReaders(config.XmlTemplate, config.UseXml, config.CredentialToUse);
AMQPConfig amqpDevicesConfig = PrepareAMQPConfig(config.ServiceBusConnectionString,
config.EventHubName,
config.MessageSubject,
config.MessageDeviceId,
config.MessageDeviceDisplayName);
if (amqpDevicesConfig == null)
{
Interlocked.Exchange(ref _Gateway, null);
Interlocked.Exchange(ref _Readers, null);
Interlocked.Exchange(ref _Config, config);
_Logger.LogInfo("Not able to construct AMQP config for Event Hub using provided connection string...");
return;
}
Interlocked.Exchange(ref _Gateway, CreateGateway(amqpDevicesConfig));
Interlocked.Exchange(ref _Readers, readers);
Interlocked.Exchange(ref _Config, config);
}
