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Add service collection configuration extension

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Cyberboss
2018-11-01 12:02:18 -04:00
parent 057b217f76
commit 19056f5e51
2 changed files with 49 additions and 5 deletions
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src/Tgstation.Server.Host/Core/Application.cs
+5 -5
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@@ -94,11 +94,11 @@ namespace Tgstation.Server.Host.Core
services.AddSingleton<IApplication>(this);
//configure configuration
services.Configure<UpdatesConfiguration>(configuration.GetSection(UpdatesConfiguration.Section));
services.Configure<DatabaseConfiguration>(configuration.GetSection(DatabaseConfiguration.Section));
services.Configure<GeneralConfiguration>(configuration.GetSection(GeneralConfiguration.Section));
services.Configure<FileLoggingConfiguration>(configuration.GetSection(FileLoggingConfiguration.Section));
services.Configure<ControlPanelConfiguration>(configuration.GetSection(ControlPanelConfiguration.Section));
services.UseStandardConfig<UpdatesConfiguration>(configuration);
services.UseStandardConfig<DatabaseConfiguration>(configuration);
services.UseStandardConfig<GeneralConfiguration>(configuration);
services.UseStandardConfig<FileLoggingConfiguration>(configuration);
services.UseStandardConfig<ControlPanelConfiguration>(configuration);
//enable options which give us config reloading
services.AddOptions();
src/Tgstation.Server.Host/Core/ServiceCollectionExtensions.cs
+44
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@@ -0,0 +1,44 @@
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Globalization;
using Tgstation.Server.Host.Configuration;
namespace Tgstation.Server.Host.Core
{
/// <summary>
/// Extensions for <see cref="IServiceCollection"/>
/// </summary>
static class ServiceCollectionExtensions
{
/// <summary>
/// Add a standard <typeparamref name="TConfig"/> binding
/// </summary>
/// <typeparam name="TConfig">The <see langword="class"/> to bind. Must have a <see langword="public"/> const/static <see cref="string"/> field named "Section"</typeparam>
/// <param name="serviceCollection">The <see cref="IServiceCollection"/> to configure</param>
/// <param name="configuration">The <see cref="IConfiguration"/> containing the <typeparamref name="TConfig"/></param>
/// <returns><paramref name="serviceCollection"/></returns>
public static IServiceCollection UseStandardConfig<TConfig>(this IServiceCollection serviceCollection, IConfiguration configuration) where TConfig: class
{
if (serviceCollection == null)
throw new ArgumentNullException(nameof(serviceCollection));
if (configuration == null)
throw new ArgumentNullException(nameof(configuration));
const string SectionFieldName = nameof(GeneralConfiguration.Section);
var configType = typeof(TConfig);
var sectionField = configType.GetField(SectionFieldName);
if (sectionField == null)
throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, "{0} has no {1} field!", configType, SectionFieldName));
var stringType = typeof(string);
if (sectionField.FieldType != stringType)
throw new InvalidOperationException(String.Format(CultureInfo.InvariantCulture, "{0} has invalid {1} field type, must be {2}!", configType, SectionFieldName, stringType));
var sectionName = (string)sectionField.GetValue(null);
return serviceCollection.Configure<TConfig>(configuration.GetSection(sectionName));
}
}
}