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HostApplicationBuilderExtensions.cs
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HostApplicationBuilderExtensions.cs
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namespace ServiceControl.Monitoring;
using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Infrastructure;
using Infrastructure.Extensions;
using Licensing;
using Messaging;
using Microsoft.AspNetCore.HttpLogging;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using NLog.Extensions.Logging;
using NServiceBus;
using NServiceBus.Configuration.AdvancedExtensibility;
using NServiceBus.Features;
using NServiceBus.Transport;
using QueueLength;
using Timings;
using Transports;
public static class HostApplicationBuilderExtensions
{
public static void AddServiceControlMonitoring(this IHostApplicationBuilder hostBuilder,
Func<ICriticalErrorContext, CancellationToken, Task> onCriticalError, Settings settings,
EndpointConfiguration endpointConfiguration)
{
var transportCustomization = settings.LoadTransportCustomization();
var buildQueueLengthProvider = QueueLengthProviderBuilder(settings.ConnectionString, transportCustomization);
hostBuilder.Services.AddWindowsService();
hostBuilder.Logging.ClearProviders();
//HINT: configuration used by NLog comes from MonitorLog.cs
hostBuilder.Logging.AddNLog();
hostBuilder.Logging.SetMinimumLevel(ToHostLogLevel(settings.LogLevel));
var services = hostBuilder.Services;
services.AddSingleton(settings);
services.AddSingleton<LicenseCheckFeatureStartup>();
services.AddSingleton<EndpointRegistry>();
services.AddSingleton<MessageTypeRegistry>();
services.AddSingleton<EndpointInstanceActivityTracker>();
services.AddSingleton(sp => buildQueueLengthProvider(sp.GetRequiredService<QueueLengthStore>()));
services.AddSingleton<LegacyQueueLengthReportHandler.LegacyQueueLengthEndpoints>();
services.RegisterAsSelfAndImplementedInterfaces<RetriesStore>();
services.RegisterAsSelfAndImplementedInterfaces<CriticalTimeStore>();
services.RegisterAsSelfAndImplementedInterfaces<ProcessingTimeStore>();
services.RegisterAsSelfAndImplementedInterfaces<QueueLengthStore>();
services.AddHttpLogging(options =>
{
// TODO Do we need to expose the host?
// we could also include the time it took to process the request
options.LoggingFields = HttpLoggingFields.RequestPath | HttpLoggingFields.RequestMethod | HttpLoggingFields.ResponseStatusCode;
});
// Core registers the message dispatcher to be resolved from the transport seam. The dispatcher
// is only available though after the NServiceBus hosted service has started. Any hosted service
// or component injected into a hosted service can only depend on this lazy instead of the dispatcher
// directly and to make things more complex of course the order of registration still matters ;)
services.AddSingleton(provider => new Lazy<IMessageDispatcher>(provider.GetRequiredService<IMessageDispatcher>));
ConfigureEndpoint(endpointConfiguration, onCriticalError, transportCustomization, settings);
hostBuilder.UseNServiceBus(endpointConfiguration);
}
internal static void ConfigureEndpoint(EndpointConfiguration config, Func<ICriticalErrorContext, CancellationToken, Task> onCriticalError, ITransportCustomization transportCustomization, Settings settings)
{
if (!string.IsNullOrWhiteSpace(settings.LicenseFileText))
{
config.License(settings.LicenseFileText);
}
var transportSettings = new TransportSettings
{
RunCustomChecks = false,
ConnectionString = settings.ConnectionString,
EndpointName = settings.EndpointName,
MaxConcurrency = settings.MaximumConcurrencyLevel
};
transportCustomization.CustomizeMonitoringEndpoint(config, transportSettings);
if (settings.EnableInstallers)
{
config.EnableInstallers(settings.Username);
}
config.DefineCriticalErrorAction(onCriticalError);
config.GetSettings().Set(settings);
config.SetDiagnosticsPath(settings.LogPath);
config.LimitMessageProcessingConcurrencyTo(settings.MaximumConcurrencyLevel);
config.UseSerialization<NewtonsoftJsonSerializer>();
config.UsePersistence<NonDurablePersistence>();
var recoverability = config.Recoverability();
recoverability.Immediate(c => c.NumberOfRetries(3));
recoverability.Delayed(c => c.NumberOfRetries(0));
config.SendFailedMessagesTo(settings.ErrorQueue);
config.DisableFeature<AutoSubscribe>();
config.AddDeserializer<TaggedLongValueWriterOccurrenceSerializerDefinition>();
config.Pipeline.Register(typeof(MessagePoolReleasingBehavior), "Releases pooled message.");
config.EnableFeature<QueueLength.QueueLength>();
config.EnableFeature<LicenseCheckFeature>();
}
static Func<QueueLengthStore, IProvideQueueLength> QueueLengthProviderBuilder(string connectionString,
ITransportCustomization transportCustomization) =>
qls =>
{
var queueLengthProvider = transportCustomization.CreateQueueLengthProvider();
Action<QueueLengthEntry[], EndpointToQueueMapping> store = (es, q) =>
qls.Store(es.Select(e => ToEntry(e)).ToArray(), ToQueueId(q));
queueLengthProvider.Initialize(connectionString, store);
return queueLengthProvider;
};
static EndpointInputQueue ToQueueId(EndpointToQueueMapping endpointInputQueueDto)
=> new EndpointInputQueue(endpointInputQueueDto.EndpointName, endpointInputQueueDto.InputQueue);
static RawMessage.Entry ToEntry(QueueLengthEntry entryDto) =>
new RawMessage.Entry { DateTicks = entryDto.DateTicks, Value = entryDto.Value };
public static LogLevel ToHostLogLevel(NLog.LogLevel logLevel)
{
if (logLevel == NLog.LogLevel.Debug)
{
return LogLevel.Debug;
}
if (logLevel == NLog.LogLevel.Error)
{
return LogLevel.Error;
}
if (logLevel == NLog.LogLevel.Fatal)
{
return LogLevel.Critical;
}
if (logLevel == NLog.LogLevel.Warn)
{
return LogLevel.Warning;
}
if (logLevel == NLog.LogLevel.Info)
{
return LogLevel.Information;
}
if (logLevel == NLog.LogLevel.Trace)
{
return LogLevel.Trace;
}
return LogLevel.None;
}
}