/// <summary>
/// Soa服务自注册
/// </summary>
/// <param name="serviceId"></param>
/// <param name="instanceId"></param>
private void RegisterService(string serviceId, string instanceId)
{
logger.Info($"Soa self registration : {serviceId}-{instanceId}");
if (string.IsNullOrEmpty(instanceId))
{
logger.Warn("Instance id is empty, soa self registration will be ignored");
return;
}
var result = client.Call <SoaRegisterRequestType, SoaResponseType>
(DynamicConfigFactory.GetInstance("global.properties").GetStringProperty("SoaCenter"),
"soa", "register", new SoaRegisterRequestType()
{
ServiceId = serviceId,
InstanceId = instanceId
});
var resp = result.Result;
if (resp.Header.ResponseCode != (int)ErrorCode.Success)
{
throw new SoaServiceException(ErrorCode.SoaRegistionFailed,
$"Soa self registion failure, error code : {resp.Header.ResponseCode}, reason : {resp.Header.ResponseCode}");
}
}
private void Listen(string app)
{
var config = DynamicConfigFactory.GetInstance($"{app}.status.properties");
// 应用程序状态发生变化后，对应的Soa服务可用实例的清单也会发生变化
config.RegisterListener(() =>
{
// 获取需要更新的服务清单
var services = QueryServiceByAppId(app);
// 获取AppInfo
var appInfo = ResourceClient.AppInfoQuery(app);
// 更新Soa在配置中心的可用实例列表
services.ForEach(p =>
{
var addressList = GetAvailableInstances(appInfo, config, p);
var address = addressList == null ? string.Empty : string.Join(";", addressList);
logger.Info($"Update soa instances list : {address}");
// 更新配置中心的Soa对应的实例的清单
// 为了提高性能，如果Soa注册中心的服务采用集群的环境，那么需要一个Controller来控制和分配每一个实例支持不同的app
Modifier.Update($"soa.{p.ServiceId}.properties", new List <ModifiedPropertyInfo>()
{
new ModifiedPropertyInfo()
{
Key = "ServerList",
Value = address
}
});
});
});
}
/// <summary>
/// Soa自动寻址
/// </summary>
/// <typeparam name="Req"></typeparam>
/// <typeparam name="Resp"></typeparam>
/// <param name="serviceId"></param>
/// <param name="operationName"></param>
/// <param name="timeoutInMs"></param>
/// <param name="request"></param>
/// <returns></returns>
public async Task <Resp> Call <Req, Resp>(string serviceId, string operationName, Req request, int timeoutInMs = DEFAULT_TIMEOUT_IN_MS)
{
var provider = DynamicConfigFactory.GetInstance($"soa.{serviceId}.properties");
var address = provider.GetStringProperty("ServerList");
if (string.IsNullOrEmpty(address))
{
throw new SoaClientException(ErrorCode.AppResourceUnavilable, "There's no effective instances available");
}
var addressList = address.Split(';');
// TODO, 这里需要优化为Soa负载均衡策略
var val = (new Random()).Next(addressList.Length - 1);
return(await Call <Req, Resp>(addressList[val], serviceId, operationName, request, timeoutInMs));
}
