/// <summary>
/// 添加Consul配置中心
/// 需要在Program程序启动时，在配置web主机时调用，如IHostBuilder.ConfigureWebHostDefaults
/// 关于key的前辍说明优先顺序说明：
/// 1、从传过来的ServiceName查找
/// 2、从appsetting里查找ServiceName的key
/// 3、使用当前应用程序名
/// </summary>
/// <param name="webBuilder">web主机生成器</param>
/// <param name="options">配置回调</param>
/// <returns>web主机生成器</returns>
public static IWebHostBuilder AddConsulConfigCenter(this IWebHostBuilder webBuilder, Action <ConfigCenterOptions> options)
{
var configOptions = new ConfigCenterOptions();
if (options != null)
{
options(configOptions);
}
webBuilder.ConfigureAppConfiguration((hostingContext, config) =>
{
var configuration = config.Build();
if (string.IsNullOrWhiteSpace(configOptions.ServiceName))
{
configOptions.ServiceName = configuration["ServiceName"];
}
if (string.IsNullOrWhiteSpace(configOptions.ConsulAddress))
{
configOptions.ConsulAddress = configuration["ConsulAddress"];
if (string.IsNullOrWhiteSpace(configOptions.ConsulAddress))
{
throw new ArgumentNullException("Consul地址不能为空");
}
}
var envi = hostingContext.HostingEnvironment;
UtilTool.CurrServiceName = configOptions.ServiceName;
UtilTool.CurrApplicationName = envi.ApplicationName;
var defaultKey = new List <string>();
if (configOptions.AutoLoadCommonKey)
{
defaultKey.Add("common.json");
}
defaultKey.Add(ConfigCenterUtil.GetKeyPath("appsettings.json", configOptions.ServiceName));
defaultKey.Add(ConfigCenterUtil.GetKeyPath($"appsettings.{envi.EnvironmentName}.json", configOptions.ServiceName));
foreach (var k in defaultKey)
{
if (configOptions.Keys.Contains(k))
{
continue;
}
configOptions.Keys.Add(k);
}
hostingContext.Configuration = config.AddConsulConfigCenter((o) =>
{
o.FillFrom(configOptions);
})
.Build();
});
return(webBuilder);
}
/// <summary>
/// 添加Consul配置中心
/// </summary>
/// <param name="builder">配置生成器</param>
/// <param name="options">选项回调</param>
/// <returns>配置生成器</returns>
public static IConfigurationBuilder AddConsulConfigCenter(this IConfigurationBuilder builder, Action <ConfigCenterOptions> options)
{
if (options == null)
{
throw new ArgumentNullException("回调配置不能为null");
}
var configOptions = new ConfigCenterOptions();
options(configOptions);
if (string.IsNullOrWhiteSpace(configOptions.ConsulAddress))
{
throw new ArgumentNullException("Consul地址不能为空");
}
if (configOptions.Keys.IsNullOrCount0())
{
throw new ArgumentNullException("键不能为空");
}
Action <IConsulConfigurationSource> fun = delegate(IConsulConfigurationSource source)
{
source.ConsulConfigurationOptions = cco =>
{
// 配置Consul
cco.Address = new Uri(configOptions.ConsulAddress);
cco.Datacenter = configOptions.Datacenter;
};
source.Optional = true; // 配置选项
source.ReloadOnChange = true; // 配置文件更新后重新加载
source.OnLoadException = exceptionContext => { exceptionContext.Ignore = true; }; // 忽略异常
};
foreach (var key in configOptions.Keys)
{
builder.AddConsul(key, fun);
}
return(builder);
}
/// <summary>
/// 填充来自配置
/// </summary>
/// <param name="source">配置</param>
public void FillFrom(ConfigCenterOptions source)
{
FillFrom(source as ConsulBasicOption);
this.Keys = source.Keys;
}