/// <summary>
/// Gets called by the provider to notify this subscriber about a new inter-role communication event.
/// </summary>
/// <param name="e">The received inter-role communication event.</param>
public void OnNext(InterRoleCommunicationEvent e)
{
Guard.ArgumentNotNull(e, "e");
var callToken = TraceManager.WorkerRoleComponent.TraceIn(e.FromInstanceID, e.ToInstanceID);
try
{
if (this.owner != null && e.Payload != null)
{
if (e.Payload is PersistenceQueueItemInfo)
{
HandlePersistenceQueueItem(e.Payload as PersistenceQueueItemInfo);
return;
}
if (e.Payload is CloudQueueWorkDetectedTriggerEvent)
{
HandleQueueWorkDetectedTriggerEvent(e.Payload as CloudQueueWorkDetectedTriggerEvent);
return;
}
}
}
finally
{
TraceManager.WorkerRoleComponent.TraceOut(callToken);
}
}
private void NotifySubscribers(InterRoleCommunicationEvent e)
{
Guard.ArgumentNotNull(e, "e");
// Invokes the specified action for each subscriber.
Parallel.ForEach(this.subscribers, ((subscriber) =>
{
try
{
// Notify the subscriber.
subscriber.Key.OnNext(e);
}
catch (Exception ex)
{
// Do not allow any subscriber to generate a fault and affect other subscribers.
try
{
// Notifies the subscriber that the event provider has experienced an error condition.
subscriber.Key.OnError(ex);
}
catch (Exception fault)
{
// Log an error.
TraceManager.ServiceComponent.TraceError(fault);
}
}
}));
}
public void TestSingleEventWithCompetingConsumers()
{
var ircSettings = new InterRoleCommunicationSettings() { UseCompetingConsumers = true, EventWaitTimeout = TimeSpan.FromSeconds(10) };
using (InterRoleCommunicationExtension irc1 = new InterRoleCommunicationExtension(topicEndpoint, ircSettings))
using (InterRoleCommunicationExtension irc2 = new InterRoleCommunicationExtension(topicEndpoint, ircSettings))
using (InterRoleCommunicationExtension irc3 = new InterRoleCommunicationExtension(topicEndpoint, ircSettings))
using (InterRoleCommunicationExtension irc4 = new InterRoleCommunicationExtension(topicEndpoint, ircSettings))
{
var subscriber1 = new EventCountingSubscriber();
irc1.Subscribe(subscriber1);
irc2.Subscribe(subscriber1);
irc3.Subscribe(subscriber1);
irc4.Subscribe(subscriber1);
InterRoleCommunicationEvent ev = new InterRoleCommunicationEvent(new RoleGracefulRecycleEvent(typeof(TopicBasedInterRoleCommunicationTests).FullName));
irc1.Publish(ev);
irc1.Publish(ev);
irc1.Publish(ev);
Thread.Sleep(irc4.Settings.EventWaitTimeout.Add(TimeSpan.FromSeconds(5)));
Assert.AreEqual<int>(3, subscriber1.OnNextCount);
}
}
protected void startTestButton_Click(object sender, EventArgs e)
{
TraceManager.WebRoleComponent.TraceIn();
try
{
TestRunStartEvent startEvent = new TestRunStartEvent()
{
TestRunID = Guid.Parse(this.testRunIDTextBox.Text),
MessageCount = Convert.ToInt32(this.messageCountTextBox.Text),
MessageSize = Convert.ToInt32(this.messageSizeDropDown.Text),
EnableAsyncPublish = this.publishAsyncCheckbox.Checked,
EnableAsyncDispatch = this.enableAsyncDispatchCheckbox.Checked,
RequireTopicCleanup = this.requireTopicCleanupCheckbox.Checked,
PurgeTraceLogTable = this.purgeTraceLogTableCheckbox.Checked
};
var targetInstance = RoleEnvironment.Roles.Where(r => { return(r.Value != RoleEnvironment.CurrentRoleInstance.Role); }).
SelectMany(i => i.Value.Instances).OrderBy(inst => { return(CommonFuncs.GetRoleInstanceIndex(inst.Id)); }).Take(1).
FirstOrDefault();
TraceManager.WebRoleComponent.TraceInfo("Sending an unicast IRC event to role instance ID {0}", targetInstance.Id);
var ircEvent = new InterRoleCommunicationEvent(startEvent, roleInstanceID: targetInstance.Id);
Global.InterRoleCommunicator.Publish(ircEvent);
this.panelInfo.Visible = true;
}
catch (Exception ex)
{
this.labelExceptionDetails.Text = ExceptionTextFormatter.Format(ex);
this.panelException.Visible = true;
}
}
/// <summary>
/// Publishes the specified inter-role communication event into publish/subscribe messaging infrastructure.
/// </summary>
/// <param name="e">The inter-role communication event to be published.</param>
public void Publish(InterRoleCommunicationEvent e)
{
// Wrap a call to the Publish into a retry policy-aware scope. This is because NetEventRelayBinding may return a fault if there are no
// subscribers listening on the Service Bus URI. This behavior may be changed in the future releases of the Windows Azure Service Bus.
Publisher.RetryPolicy.ExecuteAction(() =>
{
Publisher.Client.Publish(e);
});
}
/// <summary>
/// Receives a notification when a new inter-role communication event occurs.
/// </summary>
/// <param name="e">The instance of the inter-role communication event received from the underlying messaging system.</param>
void IObserver <InterRoleCommunicationEvent> .OnNext(InterRoleCommunicationEvent e)
{
if (e != null && e.Payload != null)
{
T payload = e.Payload as T;
if (payload != null)
{
OnNext(payload);
}
}
}
private void OnPersistDataStreamCompleted(PersistenceQueueItemInfo queueItemInfo)
{
var callToken = TraceManager.WorkerRoleComponent.TraceIn(queueItemInfo.QueueItemId, queueItemInfo.QueueItemType, queueItemInfo.QueueItemSize);
IInterRoleCommunicationExtension interCommExtension = Extensions.Find <IInterRoleCommunicationExtension>();
if (interCommExtension != null)
{
InterRoleCommunicationEvent e = new InterRoleCommunicationEvent(queueItemInfo);
interCommExtension.Publish(e);
}
TraceManager.WorkerRoleComponent.TraceOut(callToken);
}
public void TestSingleEvent()
{
using (InterRoleCommunicationExtension ircExtension = new InterRoleCommunicationExtension(topicEndpoint, new InterRoleCommunicationSettings() { EnableCarbonCopy = true }))
{
var subscriber1 = new EventCountingSubscriber();
ircExtension.Subscribe(subscriber1);
InterRoleCommunicationEvent ev = new InterRoleCommunicationEvent(new RoleGracefulRecycleEvent(typeof(TopicBasedInterRoleCommunicationTests).FullName));
ircExtension.Publish(ev);
Thread.Sleep(ircExtension.Settings.EventWaitTimeout.Add(TimeSpan.FromSeconds(5)));
Assert.AreEqual<int>(1, subscriber1.OnNextCount);
}
}
/// <summary>
/// Publishes the specified inter-role communication event into publish/subscribe messaging infrastructure.
/// </summary>
/// <param name="e">The inter-role communication event to be published.</param>
public void Publish(InterRoleCommunicationEvent e)
{
Guard.ArgumentNotNull(e, "e");
var eventMsg = BrokeredMessage.CreateMessage(e);
// Configure event routing properties.
eventMsg.Properties[MsgCtxPropNameFromInstanceID] = e.FromInstanceID = this.senderInstanceID;
eventMsg.Properties[MsgCtxPropNameToInstanceID] = String.IsNullOrEmpty(e.ToInstanceID) ? MsgCtxPropValueAny : e.ToInstanceID;
// Configure other message properties and settings.
eventMsg.TimeToLive = this.settings.EventTimeToLive;
// Send the event asynchronously.
this.sendAction.BeginInvoke(eventMsg, this.endSend, null);
}
/// <summary>
/// Gets called by the provider to notify this subscriber about a new inter-role communication event.
/// </summary>
/// <param name="e">The received inter-role communication event.</param>
public void OnNext(InterRoleCommunicationEvent e)
{
var callToken = TraceManager.WorkerRoleComponent.TraceIn(e.FromInstanceID, e.ToInstanceID);
if (this.owner != null)
{
PersistenceQueueItemInfo queueItemInfo = e.Payload as PersistenceQueueItemInfo;
if (queueItemInfo != null)
{
HandlePersistenceQueueItem(queueItemInfo);
}
}
TraceManager.WorkerRoleComponent.TraceOut(callToken);
}
private void NotifySubscribers(InterRoleCommunicationEvent e)
{
Guard.ArgumentNotNull(e, "e");
#if PERF_TEST
using (TraceManager.ServiceComponent.TraceScope("Notifying all subscribers", e.From, e.To))
#endif
{
Action <IObserver <InterRoleCommunicationEvent> > notifyAction = ((subscriber) =>
{
try
{
// Notify the subscriber.
subscriber.OnNext(e);
}
catch (Exception ex)
{
// Do not allow any subscriber to generate a fault and affect other subscribers.
try
{
// Notifies the subscriber that the event provider has experienced an error condition.
subscriber.OnError(ex);
}
catch (Exception fault)
{
// Log an error.
TraceManager.ServiceComponent.TraceError(fault);
}
}
});
// Only parallelize when enabled and there is more than 1 active subscribers.
if (this.Settings.EnableParallelDispatch && this.subscribers.Count > 1)
{
// Invokes the specified action for each subscriber in parallel.
Parallel.ForEach(this.subscribers, ((s) => notifyAction(s.Key)));
}
else
{
foreach (var s in this.subscribers)
{
notifyAction(s.Key);
}
}
}
}
/// <summary>
/// Multicasts the specified inter-role communication event to one or more subscribers.
/// </summary>
/// <param name="e">The inter-role communication event to be delivered to the subscribers.</param>
public void Publish(InterRoleCommunicationEvent e)
{
// Validate input parameters.
Guard.ArgumentNotNull(e, "e");
// Log an entry point.
var callToken = TraceManager.ServiceComponent.TraceIn(e.From);
try
{
// Query all registered subscribers using query parallelization provided by PLINQ.
var subscribers = from s in this.subscribers.AsParallel().AsUnordered() select s;
// Invokes the specified action for each subscriber.
subscribers.ForAll((subscriber) =>
{
try
{
// Notify the subscriber.
subscriber.OnNext(e);
}
catch (Exception ex)
{
// Do not allow any subscriber to generate a fault and affect other subscribers.
try
{
// Notifies the subscriber that the event provider has experienced an error condition.
subscriber.OnError(ex);
}
catch (Exception fault)
{
// Log an error.
TraceManager.ServiceComponent.TraceError(fault);
}
}
});
}
finally
{
// Log an exit point.
TraceManager.ServiceComponent.TraceOut(callToken);
}
}
public void TestSingleEventWithNetworkFaultSimulation()
{
try
{
using (InterRoleCommunicationExtension ircExtension = new InterRoleCommunicationExtension(topicEndpoint, new InterRoleCommunicationSettings() { EnableCarbonCopy = true, EnableAsyncPublish = false, EventWaitTimeout = TimeSpan.FromSeconds(3) }))
{
bool retryOccurred = false;
ircExtension.Settings.RetryPolicy.RetryOccurred += (currentRetryCount, ex, delay) =>
{
retryOccurred = true;
NetworkUtility.EnableNetworkAdapter();
};
var subscriber1 = new EventCountingSubscriber();
ircExtension.Subscribe(subscriber1);
NetworkUtility.DisableNetworkAdapter();
InterRoleCommunicationEvent ev = new InterRoleCommunicationEvent(new RoleGracefulRecycleEvent(typeof(TopicBasedInterRoleCommunicationTests).FullName));
ircExtension.Publish(ev);
while (subscriber1.OnNextCount == 0)
{
Thread.Sleep(ircExtension.Settings.EventWaitTimeout.Add(TimeSpan.FromSeconds(5)));
}
Assert.IsTrue(retryOccurred, "A retry condition does not seem to have occurred.");
Assert.AreEqual<int>(1, subscriber1.OnNextCount);
}
}
finally
{
NetworkUtility.EnableNetworkAdapter();
}
}
/// <summary>
/// Publishes the specified inter-role communication event into publish/subscribe messaging infrastructure.
/// </summary>
/// <param name="e">The inter-role communication event to be published.</param>
public void Publish(InterRoleCommunicationEvent e)
{
Guard.ArgumentNotNull(e, "e");
var from = e.From = (this.settings.UseCompetingConsumers ? this.senderRoleID : this.senderInstanceID);
var to = String.IsNullOrEmpty(e.To) ? MsgCtxPropValueAny : e.To;
Func <BrokeredMessage> createMessage = () =>
{
var msg = new BrokeredMessage(e, this.serializer);
// Configure event routing properties.
msg.Properties[MsgCtxPropNameFrom] = from;
msg.Properties[MsgCtxPropNameTo] = to;
// Configure other message properties and settings.
msg.TimeToLive = this.settings.EventTimeToLive;
return(msg);
};
// Check if we should perform the send operation asynchronously.
if (this.settings.EnableAsyncPublish)
{
// Declare a BrokeredMessage instance outside the consuming actions so that it can be reused across all 3 delegates below.
BrokeredMessage msg = null;
#if PERF_TEST
Stopwatch watch = Stopwatch.StartNew();
#endif
// Use a retry policy to execute the Send action in an asynchronous and reliable fashion.
this.retryPolicy.ExecuteAction
(
(cb) =>
{
// A new BrokeredMessage instance must be created each time we send it. Reusing the original BrokeredMessage instance may not work as
// the state of its BodyStream cannot be guaranteed to be readable from the beginning.
msg = createMessage();
// Send the event asynchronously.
this.topicClient.BeginSend(msg, cb, null);
},
(ar) =>
{
try
{
// Complete the asynchronous operation. This may throw an exception that will be handled internally by the retry policy.
this.topicClient.EndSend(ar);
#if PERF_TEST
watch.Stop();
TraceManager.ServiceComponent.TraceDetails("Publishing message into a topic took {0}ms", watch.ElapsedMilliseconds);
#endif
}
finally
{
// Ensure that any resources allocated by a BrokeredMessage instance are released.
if (msg != null)
{
msg.Dispose();
msg = null;
}
}
},
(ex) =>
{
// Always dispose the BrokeredMessage instance even if the send operation has completed unsuccessfully.
if (msg != null)
{
msg.Dispose();
msg = null;
}
// Always log exceptions regardless what fault subscribers are doing with the exceptions.
TraceManager.ServiceComponent.TraceError(ex);
// Notify all registered fault handlers about this exception.
foreach (var handler in this.faultHandlers)
{
try
{
// Provide the fault observer with exception and original event.
handler.Key.OnNext(Tuple.Create <Exception, InterRoleCommunicationEvent>(ex, e));
}
catch (Exception fault)
{
// Notify the fault observer that we experienced an error condition.
handler.Key.OnError(fault);
}
}
}
);
}
else
{
#if PERF_TEST
using (TraceManager.ServiceComponent.TraceScope("Publishing message into a topic", e.From, e.To))
#endif
{
// Send the event synchronously, use retry logic to ensure a reliable operation.
this.retryPolicy.ExecuteAction(() =>
{
var msg = createMessage();
try
{
this.topicClient.Send(msg);
}
finally
{
// Ensure that any resources allocated by a BrokeredMessage instance are released.
if (msg != null)
{
msg.Dispose();
}
}
});
}
}
}
/// <summary>
/// Notifies this extension component that it has been registered in the owner's collection of extensions.
/// </summary>
/// <param name="owner">The extensible owner object that aggregates this extension.</param>
public void Attach(IExtensibleCloudServiceComponent owner)
{
owner.Extensions.Demand <IRoleConfigurationSettingsExtension>();
IRoleConfigurationSettingsExtension roleConfigExtension = owner.Extensions.Find <IRoleConfigurationSettingsExtension>();
this.serviceBusEndpoint = roleConfigExtension.GetServiceBusEndpoint(WellKnownEndpointName.InterRoleCommunication);
this.retryPolicy = roleConfigExtension.CommunicationRetryPolicy;
if (this.serviceBusEndpoint != null)
{
// Configure Service Bus credentials and entity URI.
var credentials = TransportClientCredentialBase.CreateSharedSecretCredential(this.serviceBusEndpoint.IssuerName, this.serviceBusEndpoint.IssuerSecret);
var address = ServiceBusEnvironment.CreateServiceUri(WellKnownProtocolScheme.ServiceBus, this.serviceBusEndpoint.ServiceNamespace, String.Empty);
// Configure Service Bus messaging factory and namespace client which is required for subscription management.
this.messagingFactory = MessagingFactory.Create(address, credentials);
this.managementClient = new ServiceBusNamespaceClient(address, credentials);
ConfigureTopicClient();
ConfigureSubscriptionClient(this.ircSubscription = ConfigureSubscription(String.Concat(SubscriptionNamePrefix, this.senderInstanceID)));
// Configure event receive action.
this.receiveAction = (() =>
{
BrokeredMessage msg = null;
this.retryPolicy.ExecuteAction(() =>
{
// Make sure we are not told to stop receiving while we are retrying.
if (!cts.IsCancellationRequested)
{
if (EventReceiver.TryReceive(Settings.EventWaitTimeout, out msg))
{
try
{
// Make sure we are not told to stop receiving while we were waiting for a new message.
if (!cts.IsCancellationRequested)
{
// Extract the event data from brokered message.
InterRoleCommunicationEvent e = msg.GetBody <InterRoleCommunicationEvent>();
// Notify all registered subscribers.
NotifySubscribers(e);
// Mark brokered message as complete.
msg.Complete(this.retryPolicy);
}
else
{
msg.Defer(this.retryPolicy);
}
}
catch (Exception ex)
{
// Abandons a brokered message and unlocks the message.
msg.Abandon(this.retryPolicy);
// Log an error.
TraceManager.ServiceComponent.TraceError(ex);
}
}
}
});
});
// Configure event receive complete action.
this.endReceive = ((ar) =>
{
this.receiveAction.EndInvoke(ar);
if (!cts.IsCancellationRequested)
{
this.receiveHandle = this.receiveAction.BeginInvoke(this.endReceive, null);
}
});
// Configure event send action.
this.sendAction = ((e) =>
{
this.retryPolicy.ExecuteAction(() => { EventSender.Send(e); });
});
// Configure event send complete action.
this.endSend = ((ar) =>
{
sendAction.EndInvoke(ar);
});
}
else
{
throw new CloudApplicationException(String.Format(CultureInfo.CurrentCulture, ExceptionMessages.SpecifiedServiceBusEndpointNotFound, WellKnownEndpointName.InterRoleCommunication, ServiceBusConfigurationSettings.SectionName));
}
}
private void HandlePersistenceQueueItem(PersistenceQueueItemInfo itemInfo)
{
Guard.ArgumentNotNull(itemInfo, "itemInfo");
this.owner.Extensions.Demand <IRulesEngineServiceClientExtension>();
this.owner.Extensions.Demand <IWorkItemSchedulerConfigurationExtension>();
this.owner.Extensions.Demand <IRoleConfigurationSettingsExtension>();
this.owner.Extensions.Demand <ICloudStorageProviderExtension>();
this.owner.Extensions.Demand <IInterRoleCommunicationExtension>();
IRulesEngineServiceClientExtension rulesEngineExtension = this.owner.Extensions.Find <IRulesEngineServiceClientExtension>();
IWorkItemSchedulerConfigurationExtension configSettingsExtension = this.owner.Extensions.Find <IWorkItemSchedulerConfigurationExtension>();
IRoleConfigurationSettingsExtension roleConfigExtension = this.owner.Extensions.Find <IRoleConfigurationSettingsExtension>();
ICloudStorageProviderExtension storageProviderExtension = this.owner.Extensions.Find <ICloudStorageProviderExtension>();
IActivityTrackingEventStreamExtension trackingEventStreamExtension = this.owner.Extensions.Find <IActivityTrackingEventStreamExtension>();
IInterRoleCommunicationExtension interCommExtension = this.owner.Extensions.Find <IInterRoleCommunicationExtension>();
// Update BAM activity to indicate when we started the dequeue operation.
if (trackingEventStreamExtension != null)
{
InventoryDataTrackingActivity activity = new InventoryDataTrackingActivity(itemInfo.QueueItemId.ToString())
{
DequeueOperationStarted = DateTime.UtcNow
};
trackingEventStreamExtension.UpdateActivity(activity);
}
var xPathLib = roleConfigExtension.GetSection <XPathQueryLibrary>(XPathQueryLibrary.SectionName);
var batchInfo = rulesEngineExtension.ExecutePolicy <PersistenceQueueItemBatchInfo>(configSettingsExtension.Settings.HandlingPolicyName, itemInfo, new MessageTypeFact(itemInfo.QueueItemType));
// Verify the batch metadata to ensure we have everything we need to be able to perform de-batching.
ValidateBatchMetadata(itemInfo, batchInfo);
// Replace the XPath query references with actual expressions taken from the XPath Library.
batchInfo.BodyItemXPath = xPathLib.Queries.Contains(batchInfo.BodyItemXPath) ? xPathLib.GetXPathQuery(batchInfo.BodyItemXPath) : batchInfo.BodyItemXPath;
batchInfo.BodyItemCountXPath = xPathLib.Queries.Contains(batchInfo.BodyItemCountXPath) ? xPathLib.GetXPathQuery(batchInfo.BodyItemCountXPath) : batchInfo.BodyItemCountXPath;
var headerXPathList = from item in batchInfo.HeaderSegments where xPathLib.Queries.Contains(item) select new { Segment = item, XPath = xPathLib.GetXPathQuery(item) };
var bodyXPathList = from item in batchInfo.BodySegments where xPathLib.Queries.Contains(item) select new { Segment = item, XPath = xPathLib.GetXPathQuery(item) };
var footerXPathList = from item in batchInfo.FooterSegments where xPathLib.Queries.Contains(item) select new { Segment = item, XPath = xPathLib.GetXPathQuery(item) };
foreach (var item in headerXPathList.ToList())
{
batchInfo.HeaderSegments.Remove(item.Segment);
batchInfo.HeaderSegments.Add(item.XPath);
}
foreach (var item in bodyXPathList.ToList())
{
batchInfo.BodySegments.Remove(item.Segment);
batchInfo.BodySegments.Add(item.XPath);
}
foreach (var item in footerXPathList.ToList())
{
batchInfo.FooterSegments.Remove(item.Segment);
batchInfo.FooterSegments.Add(item.XPath);
}
int fromItem = 1, toItem = fromItem, maxItems = configSettingsExtension.Settings.XmlBatchSize;
var taskParameters = new List <DequeueXmlDataTaskState>();
using (SqlAzurePersistenceQueue persistenceQueue = new SqlAzurePersistenceQueue())
{
persistenceQueue.Open(WellKnownDatabaseName.PersistenceQueue);
using (XmlReader resultReader = persistenceQueue.QueryXmlData(itemInfo.QueueItemId, new string[] { batchInfo.BodyItemCountXPath }, xPathLib.Namespaces.NamespaceManager))
{
maxItems = resultReader.ReadContentAsInt();
}
}
do
{
toItem = fromItem + configSettingsExtension.Settings.XmlBatchSize - 1;
taskParameters.Add(new DequeueXmlDataTaskState()
{
QueueItemInfo = itemInfo,
HeaderSegments = new List <string>(batchInfo.HeaderSegments),
BodySegments = new List <string>(from query in batchInfo.BodySegments select String.Format(query, fromItem, toItem)),
FooterSegments = new List <string>(batchInfo.FooterSegments),
StartItemIndex = fromItem,
EndItemIndex = toItem,
ItemDetectionXPath = batchInfo.BodyItemXPath,
Settings = configSettingsExtension.Settings,
StorageProvider = storageProviderExtension,
NamespaceManager = xPathLib.Namespaces.NamespaceManager
});
fromItem += configSettingsExtension.Settings.XmlBatchSize;
}while (toItem < maxItems);
// Before we start putting work items on queue, notify the respective queue listeners that they should expect work to arrive.
CloudQueueWorkDetectedTriggerEvent trigger = new CloudQueueWorkDetectedTriggerEvent(configSettingsExtension.Settings.CloudStorageAccount, configSettingsExtension.Settings.DestinationQueue, maxItems, PayloadSizeKind.MessageCount);
// Package the trigger into an inter-role communication event.
var interRoleEvent = new InterRoleCommunicationEvent(trigger);
// Publish inter-role communication event via the Service Bus one-way multicast.
interCommExtension.Publish(interRoleEvent);
var stateCollection = from x in taskParameters.AsParallel <DequeueXmlDataTaskState>()
orderby x.StartItemIndex
select x;
foreach (var state in stateCollection)
{
try
{
DequeueXmlDataTaskMain(state);
}
catch (Exception ex)
{
TraceManager.WorkerRoleComponent.TraceError(ex);
}
}
// Update BAM activity to indicate when we completed the dequeue operation.
if (trackingEventStreamExtension != null)
{
InventoryDataTrackingActivity activity = new InventoryDataTrackingActivity(itemInfo.QueueItemId.ToString())
{
DequeueOperationCompleted = DateTime.UtcNow
};
trackingEventStreamExtension.UpdateActivity(activity);
}
}
/// <summary>
/// Receives a notification when a new inter-role communication event occurs.
/// </summary>
public override void OnNext(TestRunStartEvent msg)
{
var numInstances = RoleEnvironment.CurrentRoleInstance.Role.Instances.Count - 1;
var topicBaseCommunicator = this.interRoleCommunicator as InterRoleCommunicationExtension;
if (topicBaseCommunicator != null)
{
topicBaseCommunicator.Settings.EnableAsyncPublish = msg.EnableAsyncPublish;
topicBaseCommunicator.Settings.EnableAsyncDispatch = msg.EnableAsyncDispatch;
}
if (msg.RequireTopicCleanup)
{
// Delete the IRC topic first so that instances will have enough time to recreate senders and receivers.
var serviceBusSettings = ConfigurationManager.GetSection(ServiceBusConfigurationSettings.SectionName) as ServiceBusConfigurationSettings;
var pubsubType = ConfigurationManager.AppSettings[CommonConsts.ConfigSettingPubSubType];
if (pubsubType.Equals(CommonConsts.ConfigSettingPubSubTypeValueTopic))
{
var topicEndpoint = serviceBusSettings.Endpoints.Get(CommonConsts.TopicServiceBusEndpointName);
var credentials = TokenProvider.CreateSharedSecretTokenProvider(topicEndpoint.IssuerName, topicEndpoint.IssuerSecret);
var address = ServiceBusEnvironment.CreateServiceUri("sb", topicEndpoint.ServiceNamespace, String.Empty);
var nsManager = new NamespaceManager(address, credentials);
if (nsManager.GetTopics().Where(t => String.Compare(t.Path, topicEndpoint.TopicName, true) == 0).Count() > 0)
{
nsManager.DeleteTopic(topicEndpoint.TopicName);
}
}
}
if (msg.PurgeTraceLogTable)
{
// Purge WADLogsTable.
PurgeTraceLogTable();
}
// Tell ACK subscriber how many messages it should expect to receive and reset the ACK counter.
this.ackSubscriber.SetExpectedAckCount(msg.MessageCount * numInstances);
this.ackSubscriber.ResetAckCounter();
var testRun = new TestRunTableEntity()
{
TestRunID = msg.TestRunID,
MessageCount = msg.MessageCount,
MessageSize = msg.MessageSize,
InstanceCount = numInstances,
StartDateTime = DateTime.UtcNow,
EndDateTime = new DateTime(1900, 1, 1)
};
var testRunsTable = new TestRunEntityTableContext(this.tableClient.BaseUri.ToString(), this.tableClient.Credentials);
testRunsTable.TableName = this.testRunsTableName;
try
{
testRunsTable.AddTestRun(testRun);
}
catch (DataServiceRequestException ex)
{
if (ex.IsEntityAlreadyExists())
{
testRunsTable.UpdateTestRun(testRun);
}
}
using (TraceManager.WorkerRoleComponent.TraceScope("Publishing IRC events", msg.TestRunID, msg.MessageCount, msg.MessageSize))
{
for (int i = 1; i <= msg.MessageCount; i++)
{
DemoPayload payload = new DemoPayload(msg.TestRunID, i, numInstances, DateTime.UtcNow);
// Create a data portion of the payload equal to the message size specified in the test run settings.
payload.Data = new byte[msg.MessageSize];
(new Random()).NextBytes(payload.Data);
InterRoleCommunicationEvent ircEvent = new InterRoleCommunicationEvent(payload);
// Update publish time so that it accurately reflects the current time.
payload.PublishTickCount = HighResolutionTimer.CurrentTickCount;
payload.PublishTime = DateTime.UtcNow;
// Publish the IRC event.
this.interRoleCommunicator.Publish(ircEvent);
}
}
}
/// <summary>
/// Initializes a new instance of a <see cref="InterRoleCommunicationExtension"/> object with the specified Service Bus topic endpoint and custom settings.
/// </summary>
/// <param name="serviceBusEndpoint">The Service Bus topic endpoint using which this component will be providing inter-role communication.</param>
/// <param name="settings">The <see cref="InterRoleCommunicationSettings"/> object containing behavioral and runtime settings for the inter-role communication component.</param>
public InterRoleCommunicationExtension(ServiceBusEndpointInfo serviceBusEndpoint, InterRoleCommunicationSettings settings)
{
Guard.ArgumentNotNull(serviceBusEndpoint, "serviceBusEndpoint");
Guard.ArgumentNotNull(settings, "settings");
Guard.ArgumentNotNullOrEmptyString(serviceBusEndpoint.TopicName, "serviceBusEndpoint.TopicName");
// Initialize internal fields.
this.settings = settings;
this.serviceBusEndpoint = serviceBusEndpoint;
this.retryPolicy = this.settings.RetryPolicy ?? RetryPolicy.NoRetry;
this.senderRoleID = FrameworkUtility.GetHashedValue(CloudEnvironment.DeploymentId, CloudEnvironment.CurrentRoleName);
this.senderInstanceID = FrameworkUtility.GetHashedValue(CloudEnvironment.DeploymentId, CloudEnvironment.CurrentRoleInstanceId);
// Configure Service Bus credentials and service namespace URI.
var credentials = TokenProvider.CreateSharedSecretTokenProvider(serviceBusEndpoint.IssuerName, serviceBusEndpoint.IssuerSecret);
var address = ServiceBusEnvironment.CreateServiceUri("sb", serviceBusEndpoint.ServiceNamespace, String.Empty);
// Configure Service Bus messaging factory and namespace client which is required for subscription management.
this.messagingFactory = MessagingFactory.Create(address, credentials);
this.nsManager = new NamespaceManager(address, credentials);
// Figure out the name of the subscription. If subscription name was specified in the endpoint definition, treat it as static.
// If no subscription name was specified, assign a globally unique name based on hashed deployment ID and role instance ID values.
this.useStaticSubscription = !String.IsNullOrEmpty(serviceBusEndpoint.SubscriptionName);
this.ircSubscriptionName = this.useStaticSubscription ? serviceBusEndpoint.SubscriptionName : (this.settings.UseCompetingConsumers ? String.Concat(SubscriptionNamePrefix, this.senderRoleID) : String.Concat(SubscriptionNamePrefix, this.senderInstanceID));
// Configure the underlying messaging entities such as topic and subscription.
ConfigureTopicClient(this.serviceBusEndpoint.TopicName);
ConfigureSubscriptionClient(this.ircSubscriptionName);
// Configure a fault handler for the receive action.
this.receiveFaultAction = ((msg, ex) =>
{
// Log an error.
TraceManager.ServiceComponent.TraceError(ex);
try
{
if (msg != null)
{
// Abandons a brokered message. This will cause Service Bus to unlock the message and make it available to be received again,
// either by the same consumer or by another completing consumer.
msg.Abandon(this.retryPolicy);
}
}
catch (MessageLockLostException)
{
// It's too late to compensate the loss of a message lock. Should just ignore it so that it does not break the receive loop.
}
catch (CommunicationObjectAbortedException)
{
// There is nothing we can do as connection might have been lost or underlying topic/subscription might have been removed.
}
catch (CommunicationObjectFaultedException)
{
// If Abandon fail with this exception, the only recourse is to Receive another message (possibly the same one).
}
});
// Configure event receive action.
this.receiveAction = (() =>
{
BrokeredMessage msg = null;
bool completedAsync = false;
this.retryPolicy.ExecuteAction(() =>
{
// Make sure we are not told to stop receiving while we are retrying.
if (!cts.IsCancellationRequested)
{
#if PERF_TEST
Stopwatch watch = Stopwatch.StartNew();
#endif
if ((msg = this.subscriptionClient.Receive(this.settings.EventWaitTimeout)) != null)
{
#if PERF_TEST
watch.Stop();
TraceManager.ServiceComponent.TraceDetails("Waited for a new event for {0}ms", watch.ElapsedMilliseconds);
#endif
try
{
// Make sure we are not told to stop receiving while we were waiting for a new message.
if (!this.cts.IsCancellationRequested)
{
if (this.settings.EnableAsyncDispatch)
{
// Invoke the dispatch action asynchronously.
this.dispatchAction.BeginInvoke(msg, this.endDispatch, msg);
completedAsync = true;
}
else
{
// Invoke the dispatch action synchronously.
this.dispatchAction(msg);
// Mark brokered message as complete.
msg.Complete(this.retryPolicy);
}
}
else
{
// If we were told to stop processing, the current message needs to be unlocked and return back to the queue.
msg.Abandon(this.retryPolicy);
}
}
catch (Exception ex)
{
this.receiveFaultAction(msg, ex);
}
finally
{
// Do not attempt to dispose a BrokeredMessage instance if it was dispatched for processing asynchronously.
if (msg != null && !completedAsync)
{
// Ensure that any resources allocated by a BrokeredMessage instance are released.
msg.Dispose();
}
}
}
}
});
});
// Configure event receive complete action.
this.endReceive = ((ar) =>
{
try
{
this.receiveAction.EndInvoke(ar);
}
catch (Exception ex)
{
// Log this error. Do not allow an unhandled exception to kill the current process.
TraceManager.ServiceComponent.TraceError(ex);
}
if (!cts.IsCancellationRequested)
{
this.receiveHandle = this.receiveAction.BeginInvoke(this.endReceive, null);
}
});
// Configure event dispatch action. This action is performed when notifying subscribers about a new IRC event.
this.dispatchAction = ((msg) =>
{
// Extract the event data from brokered message.
InterRoleCommunicationEvent e = msg.GetBody <InterRoleCommunicationEvent>(this.serializer);
// Notify all registered subscribers.
NotifySubscribers(e);
});
this.endDispatch = ((ar) =>
{
BrokeredMessage msg = null;
try
{
msg = ar.AsyncState as BrokeredMessage;
this.dispatchAction.EndInvoke(ar);
if (msg != null)
{
// Mark brokered message as complete.
msg.Complete(this.retryPolicy);
}
}
catch (Exception ex)
{
this.receiveFaultAction(msg, ex);
}
finally
{
if (msg != null)
{
// Ensure that any resources allocated by a BrokeredMessage instance are released.
msg.Dispose();
}
}
});
}
