public override void Configure(IFunctionsHostBuilder builder)
{
var services = builder.Services;
// register custom service in the container
services.AddSingleton(_ =>
{
var configurationRoot = builder.GetContext().Configuration;
var customComponentInitializationValue = configurationRoot.GetValue <string>("CustomComponentValue");
return(new CustomComponent(customComponentInitializationValue));
});
builder.UseNServiceBus(() =>
{
var configuration = new StorageQueueTriggeredEndpointConfiguration(AzureStorageQueueTriggerFunction.EndpointName);
configuration.UseSerialization <NewtonsoftSerializer>();
// Disable persistence requirement
configuration.Transport.DisablePublishing();
// optional: log startup diagnostics using Functions provided logger
configuration.LogDiagnostics();
return(configuration);
});
}
public static void DisablePublishing(StorageQueueTriggeredEndpointConfiguration endpointConfiguration)
{
#region asq-disable-publishing
endpointConfiguration.Transport.DisablePublishing();
#endregion
}
StaticUsage(StorageQueueTriggeredEndpointConfiguration storageQueueTriggeredEndpointConfiguration, FunctionExecutionContext executionContext)
{
#region asq-enable-diagnostics
storageQueueTriggeredEndpointConfiguration.LogDiagnostics();
#endregion
}
public static void EnablePersistence(StorageQueueTriggeredEndpointConfiguration endpointConfiguration)
{
#region asq-enable-persistence
var persistence = endpointConfiguration.AdvancedConfiguration.UsePersistence <AzureStoragePersistence>();
persistence.ConnectionString("<connection-string>");
#endregion
}
public static void EnableDelayedRetries(StorageQueueTriggeredEndpointConfiguration endpointConfiguration, int numberOfDelayedRetries, TimeSpan timeIncreaseBetweenDelayedRetries)
{
#region asq-enable-delayed-retries
var recoverability = endpointConfiguration.AdvancedConfiguration.Recoverability();
recoverability.Delayed(settings =>
{
settings.NumberOfRetries(numberOfDelayedRetries);
settings.TimeIncrease(timeIncreaseBetweenDelayedRetries);
});
#endregion
#region asq-configure-error-queue
endpointConfiguration.AdvancedConfiguration.SendFailedMessagesTo("error");
#endregion
}
public async Task Should_load_handlers_from_assembly_when_using_FunctionsHostBuilder()
{
// The message handler assembly shouldn't be loaded at this point because there is no reference in the code to it.
Assert.False(AppDomain.CurrentDomain.GetAssemblies().Any(a => a.FullName == "Testing.Handlers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"));
var serviceCollection = new ServiceCollection();
var configuration = new StorageQueueTriggeredEndpointConfiguration("assemblyTest");
configuration.UseSerialization <XmlSerializer>();
configuration.Transport.DisablePublishing();
configuration.EndpointConfiguration.UsePersistence <InMemoryPersistence>();
var settings = configuration.AdvancedConfiguration.GetSettings();
var endpointFactory = FunctionsHostBuilderExtensions.Configure(configuration, serviceCollection,
Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ExternalHandlers"));
var serviceProvider = serviceCollection.BuildServiceProvider();
var endpoint = endpointFactory(serviceProvider);
// we need to process an actual message to have the endpoint being created
await endpoint.Process(GenerateMessage(), new ExecutionContext());
// The message handler assembly should be loaded now because scanning should find and load the handler assembly
Assert.True(AppDomain.CurrentDomain.GetAssemblies().Any(a => a.FullName == "Testing.Handlers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"));
// Verify the handler and message type have been identified and loaded:
var registry = settings.Get <MessageHandlerRegistry>();
var dummyMessageType = registry.GetMessageTypes().FirstOrDefault(t => t.FullName == "Testing.Handlers.DummyMessage");
Assert.NotNull(dummyMessageType);
var dummyMessageHandler = registry.GetHandlersFor(dummyMessageType).SingleOrDefault();
Assert.AreEqual("Testing.Handlers.DummyMessageHandler", dummyMessageHandler.HandlerType.FullName);
// ensure the assembly is loaded into the right context
Assert.AreEqual(AssemblyLoadContext.GetLoadContext(Assembly.GetExecutingAssembly()), AssemblyLoadContext.GetLoadContext(dummyMessageType.Assembly));
}
public override Task Start(CancellationToken token)
{
endpoint = new TestableFunctionEndpoint(context =>
{
var functionEndpointConfiguration = new StorageQueueTriggeredEndpointConfiguration(Name);
// Tests are not exercising pub/sub and processing pipeline is the same as with the regular endpoints (message-driven pub/sub should work as usual)
functionEndpointConfiguration.Transport.DisablePublishing();
var endpointConfiguration = functionEndpointConfiguration.AdvancedConfiguration;
endpointConfiguration.TypesToIncludeInScan(functionComponentType.GetTypesScopedByTestClass());
endpointConfiguration.Recoverability()
.Immediate(i => i.NumberOfRetries(0))
.Delayed(d => d.NumberOfRetries(0))
.Failed(c => c
// track messages sent to the error queue to fail the test
.OnMessageSentToErrorQueue(failedMessage =>
{
scenarioContext.FailedMessages.AddOrUpdate(
Name,
new[] { failedMessage },
(_, fm) =>
{
var messages = fm.ToList();
messages.Add(failedMessage);
return(messages);
});
return(Task.CompletedTask);
}));
endpointConfiguration.RegisterComponents(c => c.RegisterSingleton(scenarioContext.GetType(), scenarioContext));
configurationCustomization(functionEndpointConfiguration);
return(functionEndpointConfiguration);
});
return(Task.CompletedTask);
}