53 lines
1.6 KiB
C#
53 lines
1.6 KiB
C#
using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Options;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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namespace FastGithub.Scanner
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{
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/// <summary>
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/// 域名与ip关系工厂
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/// </summary>
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[Service(ServiceLifetime.Singleton)]
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sealed class GithubLookupFacotry
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{
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private readonly IEnumerable<IGithubLookupProvider> providers;
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private readonly IOptionsMonitor<GithubLookupFactoryOptions> options;
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/// <summary>
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/// 域名与ip关系工厂
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/// </summary>
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/// <param name="providers"></param>
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/// <param name="options"></param>
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public GithubLookupFacotry(
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IEnumerable<IGithubLookupProvider> providers,
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IOptionsMonitor<GithubLookupFactoryOptions> options)
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{
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this.providers = providers.OrderBy(item => item.Order);
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this.options = options;
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}
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/// <summary>
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/// 查找域名与ip关系
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/// </summary>
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/// <returns></returns>
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public async Task<IEnumerable<DomainAddress>> LookupAsync(CancellationToken cancellationToken)
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{
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var hashSet = new HashSet<DomainAddress>();
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var domains = this.options.CurrentValue.Domains;
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foreach (var provider in this.providers)
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{
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var domainAddresses = await provider.LookupAsync(domains, cancellationToken);
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foreach (var item in domainAddresses)
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{
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hashSet.Add(item);
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}
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}
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return hashSet;
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}
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}
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}
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