123 lines
3.9 KiB
C#
123 lines
3.9 KiB
C#
using Microsoft.Extensions.Logging;
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using Microsoft.Extensions.Options;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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using System.Linq;
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using System.Net;
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namespace FastGithub
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{
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/// <summary>
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/// FastGithub配置
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/// </summary>
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public class FastGithubConfig
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{
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private readonly ILogger<FastGithubConfig> logger;
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private ConcurrentDictionary<string, DomainConfig?> domainConfigCache;
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/// <summary>
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/// 未污染的dns
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/// </summary>
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public IPEndPoint PureDns { get; private set; }
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/// <summary>
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/// 速度快的dns
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/// </summary>
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public IPEndPoint FastDns { get; private set; }
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/// <summary>
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/// 获取域名配置
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/// </summary>
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public SortedDictionary<DomainMatch, DomainConfig> DomainConfigs { get; private set; }
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/// <summary>
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/// FastGithub配置
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/// </summary>
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/// <param name="options"></param>
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/// <param name="logger"></param>
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public FastGithubConfig(
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IOptionsMonitor<FastGithubOptions> options,
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ILogger<FastGithubConfig> logger)
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{
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this.logger = logger;
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var opt = options.CurrentValue;
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this.PureDns = opt.PureDns.ToIPEndPoint();
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this.FastDns = opt.FastDns.ToIPEndPoint();
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this.DomainConfigs = ConvertDomainConfigs(opt.DomainConfigs);
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this.domainConfigCache = new ConcurrentDictionary<string, DomainConfig?>();
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options.OnChange(opt => this.Update(opt));
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}
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/// <summary>
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/// 更新配置
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/// </summary>
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/// <param name="options"></param>
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private void Update(FastGithubOptions options)
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{
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try
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{
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this.PureDns = options.PureDns.ToIPEndPoint();
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this.FastDns = options.FastDns.ToIPEndPoint();
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this.DomainConfigs = ConvertDomainConfigs(options.DomainConfigs);
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this.domainConfigCache = new ConcurrentDictionary<string, DomainConfig?>();
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}
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catch (Exception ex)
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{
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this.logger.LogError(ex.Message);
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}
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}
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/// <summary>
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/// 配置转换
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/// </summary>
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/// <param name="domainConfigs"></param>
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/// <returns></returns>
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private static SortedDictionary<DomainMatch, DomainConfig> ConvertDomainConfigs(Dictionary<string, DomainConfig> domainConfigs)
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{
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var result = new SortedDictionary<DomainMatch, DomainConfig>();
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foreach (var kv in domainConfigs)
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{
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result.Add(new DomainMatch(kv.Key), kv.Value);
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}
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return result;
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}
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/// <summary>
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/// 是否匹配指定的域名
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/// </summary>
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/// <param name="domain"></param>
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/// <returns></returns>
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public bool IsMatch(string domain)
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{
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return this.DomainConfigs.Keys.Any(item => item.IsMatch(domain));
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}
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/// <summary>
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/// 尝试获取域名配置
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/// </summary>
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/// <param name="domain"></param>
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/// <param name="value"></param>
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/// <returns></returns>
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public bool TryGetDomainConfig(string domain, [MaybeNullWhen(false)] out DomainConfig value)
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{
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value = this.domainConfigCache.GetOrAdd(domain, this.GetDomainConfig);
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return value != null;
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}
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/// <summary>
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/// 获取域名配置
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/// </summary>
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/// <param name="domain"></param>
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/// <returns></returns>
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private DomainConfig? GetDomainConfig(string domain)
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{
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var key = this.DomainConfigs.Keys.FirstOrDefault(item => item.IsMatch(domain));
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return key == null ? null : this.DomainConfigs[key];
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}
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}
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}
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