69 lines
2.6 KiB
C#
69 lines
2.6 KiB
C#
using System;
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using System.Threading.Tasks;
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using System.Net.Http;
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using System.Collections.Generic;
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using Newtonsoft.Json;
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namespace LeanCloud.Common {
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public class AppRouter {
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private readonly string appId;
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private readonly string server;
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private AppServer appServer;
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public AppRouter(string appId, string server) {
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if (!IsInternalApp(appId) && string.IsNullOrEmpty(server)) {
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// 国内节点必须配置自定义域名
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throw new Exception("Please init with your server url.");
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}
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this.appId = appId;
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this.server = server;
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}
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public async Task<string> GetApiServer() {
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// 优先返回用户自定义域名
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if (!string.IsNullOrEmpty(server)) {
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return server;
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}
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// 判断节点地区
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if (!IsInternalApp(appId)) {
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// 国内节点必须配置自定义域名
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throw new Exception("Please init with your server url.");
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}
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// 向 App Router 请求地址
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if (appServer == null || appServer.IsExpired) {
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try {
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HttpRequestMessage request = new HttpRequestMessage {
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RequestUri = new Uri($"https://app-router.com/2/route?appId={appId}"),
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Method = HttpMethod.Get
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};
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HttpClient client = new HttpClient();
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HttpUtils.PrintRequest(client, request);
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HttpResponseMessage response = await client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead);
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request.Dispose();
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string resultString = await response.Content.ReadAsStringAsync();
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response.Dispose();
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HttpUtils.PrintResponse(response, resultString);
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Dictionary<string, object> data = JsonConvert.DeserializeObject<Dictionary<string, object>>(resultString);
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appServer = new AppServer(data);
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} catch (Exception e) {
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Logger.Error(e.Message);
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// 拉取服务地址失败后，使用国际节点的默认服务地址
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appServer = AppServer.GetInternalFallbackAppServer(appId);
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}
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}
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return appServer.ApiServer;
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}
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private static bool IsInternalApp(string appId) {
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if (appId.Length < 9) {
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return false;
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}
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string suffix = appId.Substring(appId.Length - 9);
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return suffix == "-MdYXbMMI";
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}
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}
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} |