Azure Scheduler

Azure Service Bus timestamps allows scheduling messages for future delivery. In V10, we added support for Azure Service Bus Scheduler to Brighter's scheduling functionality.

Usage

To use Azure Service Bus timestamp with Brighter:

1. Create a subscription for the FireAzureSchedule consumer.

2. Install the Paramore.Brighter.MessageScheduler.Azure package.

Example Configuration

private static IHostBuilder CreateHostBuilder(string[] args) =>
    Host.CreateDefaultBuilder(args)
        .ConfigureServices((hostContext, services) =>
        {
            ConfigureBrighter(hostContext, services);
        });

private static void ConfigureBrighter(HostBuilderContext hostContext, IServiceCollection services)
{
    services
        .AddServiceActivator(options =>
        {
            options.Subscriptions = new[]
            {
                // Subscription for FireAzureSchedule
                new AzureServiceBusSubscription<FireAzureSchedule>(
                    new SubscriptionName("paramore.example.scheduler-message"),
                    new ChannelName("message-scheduler-channel"),
                    new RoutingKey("message-scheduler-topic"),
                    bufferSize: 10,
                    timeOut: TimeSpan.FromMilliseconds(20),
                    lockTimeout: 30 // Fixed typo from 'lockTime out' to 'lockTimeout'
                )
            };
        })
        .UseScheduler(new AzureServiceBusSchedulerFactory(
            new ServiceBusVisualStudioCredentialClientProvider(), 
            "some-role"
        ));
}

Important Considerations

Rescheduling Limitations

Azure Service Bus does not support modifying the EnqueuedTimeUtc property of scheduled messages. To reschedule a message:

1. Cancel the existing scheduled message

2. Create a new scheduled message with updated timing

Key Components

1. Service Bus Credentials Uses ServiceBusVisualStudioCredentialClientProvider for authentication (requires proper Azure AD configuration).

2. Message Handling Ensure your FireAzureSchedule consumer is properly configured to handle scheduled messages.