54 lines
2.6 KiB
C#
54 lines
2.6 KiB
C#
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Options;
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namespace Telegrator.Hosting.Configuration
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{
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/// <summary>
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/// Abstract base class for configuring options from configuration sources.
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/// Provides a proxy pattern for binding configuration to strongly-typed options classes.
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/// </summary>
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/// <typeparam name="TOptions">The type of options to configure.</typeparam>
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public abstract class ConfigureOptionsProxy<TOptions> where TOptions : class
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{
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/// <summary>
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/// Configures the options using the default configuration section.
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/// </summary>
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/// <param name="services">The service collection to configure.</param>
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/// <param name="configuration">The configuration source.</param>
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public void Configure(IServiceCollection services, IConfiguration configuration)
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=> Configure(services, Options.DefaultName, configuration, null);
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/// <summary>
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/// Configures the options using a named configuration section.
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/// </summary>
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/// <param name="services">The service collection to configure.</param>
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/// <param name="name">The name of the configuration section.</param>
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/// <param name="configuration">The configuration source.</param>
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public void Configure(IServiceCollection services, string? name, IConfiguration configuration)
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=> Configure(services, name, configuration, null);
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/// <summary>
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/// Configures the options using a named configuration section with custom binder options.
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/// </summary>
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/// <param name="services">The service collection to configure.</param>
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/// <param name="name">The name of the configuration section.</param>
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/// <param name="configuration">The configuration source.</param>
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/// <param name="configureBinder">Optional action to configure the binder options.</param>
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public void Configure(IServiceCollection services, string? name, IConfiguration configuration, Action<BinderOptions>? configureBinder)
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{
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var namedConfigure = new NamedConfigureFromConfigurationOptions<ConfigureOptionsProxy<TOptions>>(name, configuration, configureBinder);
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namedConfigure.Configure(name, this);
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services.AddOptions();
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services.AddSingleton(Options.Create(Realize()));
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}
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/// <summary>
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/// Creates the actual options instance from the configuration.
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/// </summary>
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/// <returns>The configured options instance.</returns>
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protected abstract TOptions Realize();
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}
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}
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