public void InitialiseTopic()
{
ServicePointManager.DefaultConnectionLimit = 12;
string connectionString = CloudConfigurationManager.GetSetting("ServiceBus.TopicConnectionString");
_topicClient = SubscriptionClient.CreateFromConnectionString(connectionString, "recreateindex", "WebRoles");
Task.Run(() =>
{
_topicClient.OnMessage(async receivedMessage =>
{
var sequenceNumber = receivedMessage.SequenceNumber;
try
{
await _throttling.Execute(async() => ReCreateSearcher());
}
catch (Exception ex)
{
//no idea why it does not work but well, log it
Trace.TraceWarning("Exception occurred during the read of message '" + sequenceNumber + "': " + ex.Message);
}
}, new OnMessageOptions {
AutoComplete = true
});
_completedEvent.WaitOne();
});
}
public static void DoWork(bool SB)
{
System.Threading.ThreadPool.SetMaxThreads(10, 10);
var connectionString = "Endpoint=sb://servicebus-namespace-2.servicebus.windows.net/;SharedAccessKeyName=servicebus-env-002-servicebus-namespace-2-pankil;SharedAccessKey=856mIAhotFSpkSXA0uts2uXmn4Ud87k9w21Vb5ZsBew=";
var topicName = "main-topic-env-002-servicebus-namespace-2";
var subscriptionName = "AllocationOrchestration_Pankil/$DeadLetterQueue";
SubscriptionClient subscriptionClient = null;
//int i = 0;
while (true)
{
try
{
OnMessageOptions options = new OnMessageOptions();
options.AutoComplete = false;
options.MaxConcurrentCalls = 10;
subscriptionClient = SubscriptionClient.CreateFromConnectionString(connectionString, topicName, subscriptionName, ReceiveMode.PeekLock);
subscriptionClient.OnMessage(msg =>
{
Console.WriteLine(string.Format("{0}: Thread Started: {1}", DateTime.Now.ToString("dd-MM-yyyy HH:mm:ss.fff"), msg.CorrelationId));
System.Threading.ThreadPool.QueueUserWorkItem(new System.Threading.WaitCallback(AnotherLongTask), msg);
}, options);
}
catch (Exception ex)
{
//Log Error
}
finally
{
subscriptionClient = null;
}
}
}
public void IsClosedCorrectlyReflectsStateOfObject()
{
var ip = "1.1.1.1";
var port = 1883;
var eventData = "Test data";
string connectionKey = "123";
var moqSocket = new MoqSocket();
var protocol = new MqttClientProtocol(new LogCompositor(), moqSocket);
var bldr = new MqttConnectMessageBuilder
{
ClientId = "UnitTest"
};
protocol.ConnectAsync(bldr, ip, port, SocketEncryption.None, eventData);
var subscriptionItem = new SubscriptionItem
{
TopicName = "a/b/+",
QualityOfService = QualityOfService.AtMostOnce
};
var subClient = new SubscriptionClient(protocol, subscriptionItem, connectionKey);
Assert.IsTrue(subClient.IsClosed);
subClient.OnMessage(msg =>
{
Assert.IsNotNull(msg);
Assert.IsTrue(msg.MessageType == MessageType.Publish);
});
Assert.IsFalse(subClient.IsClosed);
subClient.Close();
Assert.IsTrue(subClient.IsClosed);
}
private static void RegisterOnMessageCallback(SubscriptionClient client)
{
var options = new OnMessageOptions();
options.AutoComplete = false;
options.AutoRenewTimeout = TimeSpan.FromMinutes(1);
client.OnMessage((message) =>
{
try
{
// Process message from subscription.
Console.WriteLine("Body: " + message.GetBody <string>());
Console.WriteLine("MessageID: " + message.MessageId);
Console.WriteLine("Message Number: " + message.Properties["MessageNumber"]);
// Remove message from subscription.
message.Complete();
}
catch (Exception)
{
// Indicates a problem, unlock message in subscription.
message.Abandon();
}
}, options);
}
public void InitialiseTopic()
{
ServicePointManager.DefaultConnectionLimit = 12;
string connectionString = CloudConfigurationManager.GetSetting("ServiceBus.TopicConnectionString");
_topicClient = SubscriptionClient.CreateFromConnectionString(connectionString, "recreateindex", "WebRoles");
Task.Run(() =>
{
_topicClient.OnMessage(async receivedMessage =>
{
var sequenceNumber = receivedMessage.SequenceNumber;
try
{
await _throttling.Execute(async () => ReCreateSearcher());
}
catch (Exception ex)
{
//no idea why it does not work but well, log it
Trace.TraceWarning("Exception occurred during the read of message '" + sequenceNumber + "': " + ex.Message);
}
}, new OnMessageOptions {
AutoComplete = true
});
_completedEvent.WaitOne();
});
}
/// <summary>
/// Subscribes to a stream of messages that match a .NET type.
/// </summary>
/// <typeparam name="T">The type to subscribe to</typeparam>
/// <param name="onMessage">The action to run when a message arrives.</param>
/// <param name="configure">The configure action.</param>
public void Subscribe <T>(Action <T> onMessage, Action <ISubscriptionConfiguration> configure) where T : class
{
Type messageType = typeof(T);
ISubscriptionConfiguration configuration = this.Configuration.SubscriptionConfiguration();
configure(configuration);
string topic = this.CreateTopicIfNotExists <T>(configuration);
string realSubscriptionId = configuration.Subscription.ToLowerInvariant();
if (!this.namespaceManager.SubscriptionExists(topic, realSubscriptionId))
{
SqlFilter filter = new SqlFilter(string.Format("[Message.Type.FullName] = '{0}'", messageType.FullName));
SubscriptionDescription dataCollectionTopic = this.namespaceManager.CreateSubscription(topic, realSubscriptionId, filter);
}
string descriptor = topic + ":" + realSubscriptionId;
SubscriptionClient client = this.subscriptionClients.GetOrAdd(
descriptor,
(d) =>
{
return(SubscriptionClient.CreateFromConnectionString(
this.Configuration.ConnectionString,
topic,
realSubscriptionId,
configuration.ReceiveMode));
});
OnMessageOptions options = new OnMessageOptions()
{
AutoComplete = false,
MaxConcurrentCalls = configuration.MaxConcurrentCalls
};
client.OnMessage(envelope =>
{
try
{
this.Configuration.Logger.InfoFormat(
"Message was received on Subscription {0} Topic {1} with MessageId {2}",
realSubscriptionId,
topic,
envelope.MessageId);
object message = JsonConvert.DeserializeObject(envelope.GetBody <string>(), messageType);
onMessage(message as T);
envelope.Complete();
}
catch (Exception ex)
{
this.Configuration.Logger.Fatal(ex);
envelope.Abandon();
}
},
options);
}
/// <summary>
/// Receives the messages in an endless asynchronous loop.
/// </summary>
private void ReceiveMessages(Action <BrokeredMessage> messageHandler)
{
var options = new OnMessageOptions();
options.AutoComplete = false;
options.AutoRenewTimeout = TimeSpan.FromMinutes(1);
_client.OnMessage(msg => { messageHandler(msg); }, options);
}
public void OnMessage <T>(Action <T> handler)
{
_subscriptionClient.OnMessage(brokeredMessage =>
{
var message = GetMessage <T>(brokeredMessage);
handler(message);
});
}
public void Subscribe <T>(string subscriptionId, Action <T> onMessage) where T : class
{
string topicName = this.CreateTopicIfNotExists <T>();
string realSubscriptionId = subscriptionId.ToLowerInvariant();
if (!this.namespaceManager.SubscriptionExists(topicName, realSubscriptionId))
{
SubscriptionDescription dataCollectionTopic = this.namespaceManager.CreateSubscription(topicName, realSubscriptionId);
}
string descriptor = topicName + ":" + realSubscriptionId;
subscriptionActions.AddOrUpdate(descriptor, new Delegate[] { onMessage }, (key, oldValue) => oldValue.Concat(new Delegate[] { onMessage }));
Func <SubscriptionClient> clientSetup = () =>
{
SubscriptionClient client = SubscriptionClient.CreateFromConnectionString(
this.connectionString,
topicName,
realSubscriptionId,
ReceiveMode.PeekLock);
OnMessageOptions options = new OnMessageOptions();
options.AutoComplete = true;
options.MaxConcurrentCalls = 1;
client.OnMessage(envelope =>
{
if (!envelope.Properties.ContainsKey("Message.Type.AssemblyQualifiedName"))
{
envelope.DeadLetter();
return;
}
string messageTypeAssemblyQualifiedName = envelope.Properties["Message.Type.AssemblyQualifiedName"].ToString();
IEnumerable <Delegate> actions = subscriptionActions[descriptor]
.Where(a => a.GetType().GetGenericArguments().First().AssemblyQualifiedName == messageTypeAssemblyQualifiedName);
if (actions.Any())
{
Type messageType = actions.First().GetType().GetGenericArguments().First();
foreach (Delegate action in actions)
{
object message = JsonConvert.DeserializeObject(envelope.GetBody <string>(), messageType);
action.DynamicInvoke(message);
}
}
},
options);
return(client);
};
this.subscriptionClients.GetOrAdd(descriptor, clientSetup.Invoke());
}
public void Setup()
{
Client = TopicClient.CreateFromConnectionString(ConnectionString, Path);
SubscriptionClient =
SubscriptionClient.CreateFromConnectionString(
"Endpoint=sb://gensb-rt-dev.servicebus.windows.net/;SharedAccessKeyName=Listen;SharedAccessKey=2PBClMF5iwCyewaxGia84zpnvAIt9lCgwC1jx8ivObc=",
Path, "persistence2");
SubscriptionClient.OnMessage(MessageReceived);
}
public void OnUpdateMessage(Action <BrokeredMessage> callback)
{
_subscriptionClient.OnMessage(callback, new OnMessageOptions
{
AutoComplete = false,
//AutoRenewTimeout = TimeSpan.FromSeconds(10),
MaxConcurrentCalls = 5
});
}
static void Main(string[] args)
{
string connectionString =
ConfigurationManager.ConnectionStrings["AzureServiceBus"].ConnectionString;
string topic = ConfigurationManager.AppSettings["Topic"];
// here we create a subscription to all messages of a topic which is created for a specific Identify tenant
var namespaceManager =
NamespaceManager.CreateFromConnectionString(connectionString);
if (!namespaceManager.SubscriptionExists(topic, "AllMessages"))
{
namespaceManager.CreateSubscription(topic, "AllMessages");
}
// create a client for the subcription above to receive message
SubscriptionClient client =
SubscriptionClient.CreateFromConnectionString(connectionString, topic, "AllMessages");
// Configure the callback options.
OnMessageOptions options = new OnMessageOptions
{
AutoComplete = false,
AutoRenewTimeout = TimeSpan.FromMinutes(1)
};
client.OnMessage((message) =>
{
try
{
// Process message from subscription.
Console.WriteLine("\n**Message**");
var stream = message.GetBody <Stream>();
stream.Seek(0, SeekOrigin.Begin);
var messageJson = new StreamReader(stream, Encoding.UTF8).ReadToEnd();
Console.WriteLine("MessageID: " + message.MessageId);
Console.WriteLine("CorrelationId: " + message.CorrelationId);
// This tells you what kind of event that happened on the Identify side
Console.WriteLine("MessageType: " + message.Properties["MessageType"]);
Console.WriteLine("AppId: " + message.Properties["AppId"]);
Console.WriteLine("MessageJson: " + messageJson);
// Remove message from subscription.
message.Complete();
}
// For demonstration purpose only. You know that you should never do generic code, right? :)
catch (Exception ex)
{
Console.WriteLine(ex);
// Indicates a problem, unlock message in subscription.
message.Abandon();
}
}, options);
Console.ReadLine();
}
private static void ReceiveTopicMessages(SubscriptionClient subscriptionClient)
{
subscriptionClient.OnMessage(message =>
{
var text = message.GetBody <string>();
Console.WriteLine("Received: " + text);
}
, new OnMessageOptions());
}
public void Start()
{
var onMessageOptions = new OnMessageOptions()
{
AutoComplete = false,
MaxConcurrentCalls = _concurrentReceivers
};
_subscriptionClient.OnMessage(message => ProcessMessage(message), onMessageOptions);
}
public void OnMessage <T>(Action <T> anonymousMethod)
{
_subscriptionClient.OnMessage((message) => {
var messageFormat = message.GetBody <T>();
anonymousMethod(messageFormat);
}, new OnMessageOptions()
{
MaxConcurrentCalls = 100
});
}
// Please set the following connection strings in app.config for this WebJob to run:
// AzureWebJobsDashboard and AzureWebJobsStorage
static void Main()
{
var host = new JobHost();
Console.WriteLine("Subscriber Start");
string connectionString = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ConnectionString");
SubscriptionClient Client = SubscriptionClient.CreateFromConnectionString(connectionString, "Storm", "StormSubcription");
// Configure the callback options.
OnMessageOptions options = new OnMessageOptions();
options.AutoComplete = false;
// options.AutoRenewTimeout = TimeSpan.FromMinutes(1);
Client.OnMessage((message) =>
{
try
{
var data = message.GetBody <string>();
WarnDataset warnDataset = JsonConvert.DeserializeObject <WarnDataset>(data);
System.Data.Entity.Spatial.DbGeography shape = DbGeography.PolygonFromText(warnDataset.SHAPE.ToString(), 4326);
//System.Data.Entity.Spatial.DbGeography shape= DbGeography.PolygonFromText("POLYGON ((-95.08 38.04, -95.08 37.86, -94.69 37.87, -94.66 38.03, -95.08 38.04))", 4326);
// This code will move to another project
using (var db = new DataLakeEntities())
{
int insertWeatherDatasets = db.uspInsertWarningData(warnDataset.WARNINGTYPE, warnDataset.MESSAGEID, shape, warnDataset.ZTIME_END, warnDataset.ZTIME_START, warnDataset.ID, warnDataset.ISSUEWFO);
}
// Remove message from subscription.
message.Complete();
}
catch (Exception ex)
{
// Indicates a problem, unlock message in subscription.
message.Abandon();
}
}, options);
Console.ReadLine();
// The following code ensures that the WebJob will be running continuously
host.RunAndBlock();
}
private static void ReadTopic(SubscriptionClient client)
{
OnMessageOptions options = new OnMessageOptions();
options.AutoComplete = false;
client.OnMessage(message =>
{
Console.WriteLine("[Message] " + message.GetBody <string>());
message.Complete();
}, options);
}
private void ConnectToChatSession(string sessionId)
{
// Create new subscription that filters messages to that session ID
chatSessionSubscriptionName = Guid.NewGuid().ToString();
SqlFilter filter = new SqlFilter(string.Format("SessionId = '{0}'", sessionId));
// Register a receiver on the subscription (filters by session ID)
SubscriptionDescription subscriptionDescription = new SubscriptionDescription(chatTopicPath, chatSessionSubscriptionName);
namespaceManager.CreateSubscription(subscriptionDescription, filter);
chatSessionClient = SubscriptionClient.CreateFromConnectionString(serviceBusConnectionString, chatTopicPath, chatSessionSubscriptionName);
chatSessionClient.OnMessage(ReceiveChatMessage);
}
public void StartSettingsWath()
{
_serviceBusHelper.CreateSubscription(_subscriptionName);
_client = _serviceBusHelper.GetSubscriptionClient(_subscriptionName);
_client.OnMessage(message =>
{
var newSettings = message.GetBody <Settings>();
UpdateConfig(newSettings);
MessageBox.Show($@"New part size: {newSettings.PartSize}");
message.Complete();
});
}
public void Start()
{
var factory = MessagingFactory.CreateFromConnectionString(_connectionString);
_subscriptionClient = factory.CreateSubscriptionClient(_consumerProperties.QueueName, _consumerProperties.SubscriptionName);
var options = new OnMessageOptions()
{
AutoComplete = false,
MaxConcurrentCalls = _consumerProperties.ConsumersQuantity,
AutoRenewTimeout = _consumerProperties.MessageLockTimeout
};
_subscriptionClient.OnMessage(Consume, options);
}
public void Receive()
{
_client.OnMessage(m =>
{
Console.WriteLine("Message body: " + m.GetBody <String>());
Console.WriteLine("Message id: " + m.MessageId);
_client.Complete(m.LockToken);
Thread.Sleep(1000);
}, new OnMessageOptions()
{
AutoComplete = false
});
}
public InboundEventProvider(IEventAggregator eventAggregator)
{
_eventAggregator = eventAggregator;
_topicClient = SubscriptionClient.CreateFromConnectionString(ServiceBusConfig.AzureEventingTopicConnectionString, Topics.EventingTopic, ServiceBusConfig.EventingTopicQueueName);
// Configure the callback options.
OnMessageOptions options = new OnMessageOptions();
options.AutoComplete = true;
options.AutoRenewTimeout = TimeSpan.FromMinutes(1);
options.MaxConcurrentCalls = 1; // Indicates the maximum number of concurrent calls to the callback the pump should initiate
_topicClient.OnMessage((message) =>
{
try
{
if (message.Properties["Type"] != null && message.Properties["DepartmentId"] != null && message.Properties["ItemId"] != null)
{
switch ((EventingTypes)int.Parse(message.Properties["Type"].ToString()))
{
case EventingTypes.PersonnelStatusUpdated:
ProcessPersonnelStatusChanged?.Invoke(int.Parse(message.Properties["DepartmentId"].ToString()), int.Parse(message.Properties["ItemId"].ToString()));
break;
case EventingTypes.UnitStatusUpdated:
ProcessUnitStatusChanged?.Invoke(int.Parse(message.Properties["DepartmentId"].ToString()), int.Parse(message.Properties["ItemId"].ToString()));
break;
case EventingTypes.CallsUpdated:
ProcessCallStatusChanged?.Invoke(int.Parse(message.Properties["DepartmentId"].ToString()), int.Parse(message.Properties["ItemId"].ToString()));
break;
case EventingTypes.PersonnelStaffingUpdated:
ProcessPersonnelStaffingChanged?.Invoke(int.Parse(message.Properties["DepartmentId"].ToString()), int.Parse(message.Properties["ItemId"].ToString()));
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
catch (Exception ex)
{
Logging.LogException(ex);
}
}, options);
}
/// <summary>
/// <see cref="MyCompany.Common.EventBus.IEventBus"/>
/// </summary>
public void RegisterHandler()
{
if (_readTopics != null)
{
var eventDrivenMessagingOptions = new OnMessageOptions();
eventDrivenMessagingOptions.AutoComplete = true;
eventDrivenMessagingOptions.ExceptionReceived += OnExceptionReceived;
eventDrivenMessagingOptions.MaxConcurrentCalls = 5;
foreach (var topic in _readTopics)
{
SubscriptionClient client = SubscriptionClient.CreateFromConnectionString(_connectionString, topic, _subscriptionName);
client.OnMessage(OnMessageArrived, eventDrivenMessagingOptions);
}
}
}
// Please set the following connection strings in app.config for this WebJob to run:
// AzureWebJobsDashboard and AzureWebJobsStorage
static void Main()
{
var host = new JobHost();
Console.WriteLine("Subscriber Start");
string connectionString = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ConnectionString");
SubscriptionClient Client = SubscriptionClient.CreateFromConnectionString(connectionString, "Weather", "WeatherSubcription");
// Configure the callback options.
OnMessageOptions options = new OnMessageOptions();
options.AutoComplete = false;
// options.AutoRenewTimeout = TimeSpan.FromMinutes(1);
Client.OnMessage((message) =>
{
try
{
var data = message.GetBody <string>();
WeatherDatasets weatherDatasets = JsonConvert.DeserializeObject <WeatherDatasets>(data);
// This code will move to another project
using (var db = new DataLakeEntities())
{
int insertWeatherDatasets = db.uspInsertWeatherDatasetsData(weatherDatasets.date, weatherDatasets.datatype, weatherDatasets.station, weatherDatasets.attributes, weatherDatasets.value);
}
// Remove message from subscription.
message.Complete();
}
catch (Exception ex)
{
// Indicates a problem, unlock message in subscription.
message.Abandon();
}
}, options);
// The following code ensures that the WebJob will be running continuously
host.RunAndBlock();
}
private void CreateSubscription()
{
if (!namespaceManager.TopicExists(topicName))
{
namespaceManager.CreateTopic(topicName);
}
if (!namespaceManager.SubscriptionExists(topicName, subscriptionName))
{
namespaceManager.CreateSubscription(topicName, subscriptionName);
}
var messagingFactory = MessagingFactory.Create(namespaceManager.Address, namespaceManager.Settings.TokenProvider);
subscriptionClient = messagingFactory.CreateSubscriptionClient(topicName, subscriptionName);
subscriptionClient.OnMessage(ProcessMessage);
}
private void Form1_Load(object sender, EventArgs e)
{
options.AutoComplete = false;
options.AutoRenewTimeout = TimeSpan.FromMinutes(1);
Client.OnMessage((message) =>
{
try
{
// Process message from subscription.
l("Echo: " + message.GetBody <string>());
// Remove message from subscription.
message.Complete();
}
catch (Exception)
{
// Indicates a problem, unlock message in subscription.
message.Abandon();
}
}, options);
new Thread(() =>
{
try
{
l("Loading");
storageAccount = Microsoft.WindowsAzure.Storage.CloudStorageAccount.Parse(Properties.Settings.Default.storage);
ps = new PublicStore(storageAccount, "base");
dlog = new log("base", "LogsAdminDebug", storageAccount);
this.Invoke((MethodInvoker) delegate()
{
this.toolStrip1.Visible = true;
});
g("Load successful");
}
catch (Exception ex1)
{
ex(System.Reflection.MethodBase.GetCurrentMethod().Name + " " + ex1.ToString());
}
}).Start();
}
protected override void ListenInternal(Action<Message> onMessageReceived, CancellationToken cancellationToken)
{
_handleMessage = onMessageReceived;
var options = new OnMessageOptions
{
MaxConcurrentCalls = 10
};
if (Pattern == MessagePattern.PublishSubscribe)
{
_subscriptionClient.OnMessage(Handle, options);
}
else
{
_queueClient.OnMessage(Handle, options);
}
cancellationToken.WaitHandle.WaitOne();
}
/// <summary>
/// Method to Receive a message from a subscription
/// </summary>
/// <param name="userName">the username of the user to get messages</param>
public static void ReceiveMessageSubscription(string userName)
{
//to avoid any typo, lower the string
string userNameLow = userName.ToLowerInvariant();
//Retrieve the connection string
string connectionString =
ConfigurationManager.AppSettings["Service.Bus.ConnectionString"] ?? null;
if (connectionString != null)
{
//Retrieve the topic's name
string topicName = ConfigurationManager.AppSettings["Service.Bus.Topic"];
//Create the subscription client object
SubscriptionClient Client =
SubscriptionClient.CreateFromConnectionString
(connectionString, topicName, userNameLow);
// Configure the callback options
OnMessageOptions options = new OnMessageOptions();
//enable manual control of the method complete
options.AutoComplete = false;
//Every 5 seconds we check for new messages
options.AutoRenewTimeout = TimeSpan.FromSeconds(5);
Client.OnMessage((message) =>
{
try
{
// Process message from subscription
Console.WriteLine("\n**Message Received!**");
Console.WriteLine("\t" + message.GetBody <string>());
Console.WriteLine("\n");
// Remove message from subscription.
message.Complete();
}
catch (Exception)
{
// Indicates a problem, unlock message in subscription
message.Abandon();
}
}, options);
}
}
//Not in use
public string SubscribeMessage(string Topic, string Subcription)
{
string connectionString = CloudConfigurationManager.GetSetting("Microsoft.ServiceBus.ConnectionString");
SubscriptionClient Client = SubscriptionClient.CreateFromConnectionString(connectionString, Topic, Subcription);
// Configure the callback options.
OnMessageOptions options = new OnMessageOptions();
options.AutoComplete = false;
options.AutoRenewTimeout = TimeSpan.FromMinutes(1);
string msg = string.Empty;
Client.OnMessage((message) =>
{
try
{
// Process message from subscription.
// Console.WriteLine("\n**High Messages**");
msg = message.GetBody <string>();
//Console.WriteLine("Body: " + message.GetBody<string>());
//Console.WriteLine("MessageID: " + message.MessageId);
//Console.WriteLine("Message Number: " + message.Properties["MessageNumber"]);
// Remove message from subscription.
message.Complete();
}
catch (Exception)
{
// Indicates a problem, unlock message in subscription.
message.Abandon();
}
}, options);
return(msg);
}
public ResponsePipeline(ITopicFactory topicFactory)
{
// Since we're in a constructor, we can't use the await keyword, so we'll wait the old fashioned synchonous way.
// The clientTask.Wait() is a blocking call. This call doesn't actually create the subscription, we do that on
// pre-application initialization, since it's faster to do it once for the whole app up-front, instead of lazily
// somwhere buried in a constructor, plus doing it lazily causes a dead-lock.
var requestSubscriptionName = string.Format(Settings.ServiceBusResponseSubscriptionNameFormat, Environment.MachineName);
var clientTask = topicFactory.CreateSubscriptionClientAsync(Settings.ServiceBusResponseTopicName, requestSubscriptionName);
clientTask.Wait();
// Do a quick check to ensure that the task didn't throw an exception and wasn't cancelled.
if (clientTask.IsFaulted || clientTask.IsCanceled)
{
throw new ServiceBusException($"Failed to create and subscribe to the response topic for subscription '{requestSubscriptionName}'.", clientTask.Exception);
}
// Store the result in a local field as we don't want it to be garbage collected.
_responseSubscription = clientTask.Result;
// We only get one shot at processing the message, because the SubscriptionClient is set to ReceiveAndDelete.
// This means that we don't have to call Complete() or Abandon() on messages, and also means we only need
// one call to service bus to handle a message. We are publishing the message into an observable sequence
// which will ensure only one thread handles the message at a time (even if there are multiple subscribers
// to the observable sequence), but we'll set the MaxConcurrentCalls to something greater than 1, because the
// observable sequence will hold the messages in memory while they are waiting to be processed. The
// combination of these qualities means we can essentially prefetch messages while we are processing a
// message. This does create multiple threads for each message, but the observable sequence will synchronize
// them all back to the same thread. It's a small price to pay for prefetching ability.
var options = new OnMessageOptions
{
AutoComplete = true,
MaxConcurrentCalls = 5 // Drain 5 at a time into memory, so we can do a bit of prefetching.
};
// Using the OnMessage delegate will handle the internal polling (or sockets, depending on mode) for us.
// When we receive a message, we'll push it through the observable sequence. The OnNext() call will block
// until all subscriptions have received the message, but we don't have any heavy processing happening, so
// it's not a big deal and we are using ReceiveAndDelete anyways, so it doesn't matter how long the OnNext()
// call takes.
_responseSubscription.OnMessage(bm =>
{
_responseMessages.OnNext(bm);
}, options);
}
public AzureTopicAsyncResult(ManualResetEvent @event, SubscriptionClient subscriptionClient)
{
m_Event = @event;
m_SubscriptionClient = subscriptionClient;
IsCompleted = false;
CompletedSynchronously = false;
var options = new OnMessageOptions();
options.AutoComplete = false;
options.AutoRenewTimeout = TimeSpan.FromMinutes(1);
m_SubscriptionClient.OnMessage(message =>
{
m_BrokeredMessage = message.Clone();
message.Complete();
CompletedSynchronously = true;
m_Event.Set();
}, options);
}
public bool Start(string dmsTallerId)
{
try
{
//connectionString = ConfigurationManager.AppSettings["CitaTallerAzureBusSubscribe"];
var namespaceManager = NamespaceManager.CreateFromConnectionString(connectionString);
if (!namespaceManager.SubscriptionExists(topicName, SubscripName))
{
// Defino un filtro para un taller. Y creo la suscripción con ese filtro.
dmsTallerId = dmsTallerId.Replace("-", "").Trim().ToUpper();
if (string.IsNullOrEmpty(dmsTallerId))
{
namespaceManager.CreateSubscription(topicName, SubscripName);
}
else
{
SqlFilter DmsTallerIdFilter = new SqlFilter("DmsTallerId = '" + dmsTallerId + "'");
namespaceManager.CreateSubscription(topicName, SubscripName, DmsTallerIdFilter);
}
}
// Creo un cliente para este NameSpace + Topic + Subscription
Client = SubscriptionClient.CreateFromConnectionString(connectionString, topicName, SubscripName);
Connected = true;
// Defino las opciones para el callback (evento)
ClientOptions = new OnMessageOptions();
ClientOptions.AutoComplete = false;
ClientOptions.MaxConcurrentCalls = 1;
ClientOptions.AutoRenewTimeout = TimeSpan.FromMinutes(1);
}
catch (Exception ex)
{
Connected = false;
ErrorMsg(ex.Message);
}
// Definimos el callback (event)
Client.OnMessage((busMessage) =>
{
try
{
if (Closing)
{
busMessage.Abandon();
return;
}
Message message = new Message();
message.SolicitudID = busMessage.Properties["SolicitudID"].ToString();
message.DmsTallerId = busMessage.Properties["DmsTallerId"].ToString();
OcxOnMessage(message);
// Eliminamos el mensaje de la suscripción
busMessage.Complete();
}
catch (Exception ex)
{
// Hemos tenido un crash. Liberamos el mensaje y quedará pendiente.
busMessage.Abandon();
ErrorMsg(ex.Message);
}
}, ClientOptions);
return true;
}
public void StartEvents(Action<CheckEvent> action)
{
using (new TraceLogicalScope(source, "StartEvents"))
{
try
{
eventPath = String.Format("{0}/Events", dc);
eventSubscription = String.Format("{0}-{1}-Subscription", node, dc);
this.source.TraceData(TraceEventType.Verbose, 0, new object[] { "Path", eventPath });
string connectionString = configuration.ServiceBus.ConnectionString;
this.source.TraceData(TraceEventType.Verbose, 0, new object[] { "ConnectionString", connectionString });
this.CreateTopic(dc, eventPath);
this.CreateCheckEventSubscription(dc, eventPath, eventSubscription);
OnMessageOptions options = new OnMessageOptions()
{
AutoComplete = true, // Indicates if the message-pump should call complete on messages after the callback has completed processing.
MaxConcurrentCalls = 1 // Indicates the maximum number of concurrent calls to the callback the pump should initiate
};
if(this.eventClient != null)
this.StopEvents();
this.eventClient = SubscriptionClient.CreateFromConnectionString(connectionString, eventPath, eventSubscription, ReceiveMode.PeekLock);
eventClient.OnMessage((BrokeredMessage message) =>
{
using(new TraceLogicalScope(source, "Receiving a message"))
{
try
{
if (message != null)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(CheckEvent));
CheckEvent ev = serializer.ReadObject(message.GetBody<Stream>()) as CheckEvent;
action.Invoke(ev);
}
}
catch(Exception ex)
{
source.TraceData(TraceEventType.Error, 0, ex);
throw;
}
}
}, options);
source.TraceEvent(TraceEventType.Verbose, 0, "Listening for Events...");
}
catch (Exception ex)
{
source.TraceData(TraceEventType.Error, 0, ex);
throw;
}
}
}
