造轮子-AgileConfig基于.NetCore的一个轻量级配置中心 (2)

以asp.net core mvc项目为例：
修改appsettings.json

{ "Logging": { "LogLevel": { "Default": "Information", "Microsoft": "Warning", "Microsoft.Hosting.Lifetime": "Information" } }, "AllowedHosts": "*", //agile_config "AgileConfig": { "appId": "app", "secret": "xxx", "nodes": "http://localhost:5000,:5001"//多个节点使用逗号分隔 } }

修改program：

public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureAppConfiguration((context, config) => { //读取本地配置 var localconfig = new ConfigurationBuilder() .SetBasePath(Directory.GetCurrentDirectory()) .AddJsonFile("appsettings.json").Build(); //从本地配置里读取AgileConfig的相关信息 var appId = localconfig["AgileConfig:appId"]; var secret = localconfig["AgileConfig:secret"]; var nodes = localconfig["AgileConfig:nodes"]; //new一个client实例 var configClient = new ConfigClient(appId, secret, nodes); //使用AddAgileConfig配置一个新的IConfigurationSource config.AddAgileConfig(configClient); //找一个变量挂载client实例，以便其他地方可以直接使用实例访问配置 ConfigClient = configClient; //注册配置项修改事件 configClient.ConfigChanged += ConfigClient_ConfigChanged; }) .ConfigureWebHostDefaults(webBuilder => { webBuilder.UseStartup<Startup>(); }); 读取配置

AgileConfig支持asp.net core 标准的IConfiguration，跟IOptions模式读取配置。还支持直接通过AgileConfigClient实例直接读取：

public class HomeController : Controller { private readonly ILogger<HomeController> _logger; private readonly IConfiguration _IConfiguration; private readonly IOptions<DbConfigOptions> _dbOptions; public HomeController(ILogger<HomeController> logger, IConfiguration configuration, IOptions<DbConfigOptions> dbOptions) { _logger = logger; _IConfiguration = configuration; _dbOptions = dbOptions; } public IActionResult Index() { return View(); } /// <summary> /// 使用IConfiguration读取配置 /// </summary> /// <returns></returns> public IActionResult ByIConfiguration() { var userId = _IConfiguration["userId"]; var dbConn = _IConfiguration["db:connection"]; ViewBag.userId = userId; ViewBag.dbConn = dbConn; return View(); } /// <summary> /// 直接使用ConfigClient的实例读取配置 /// </summary> /// <returns></returns> public IActionResult ByInstance() { var userId = Program.ConfigClient["userId"]; var dbConn = Program.ConfigClient["db:connection"]; ViewBag.userId = userId; ViewBag.dbConn = dbConn; return View("ByIConfiguration"); } /// <summary> /// 使用Options模式读取配置 /// </summary> /// <returns></returns> public IActionResult ByOptions() { var dbConn = _dbOptions.Value.connection; ViewBag.dbConn = dbConn; return View("ByIConfiguration"); } }

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