private List <string> GetAvailableInstances
(AppInfoQueryResponseType appInfo, IDynamicConfigProvider provider, SoaInfo soaInfo)
{
// 如果Soa中没有注册任何实例，那么当前soa服务就不存在可用的实例
if (soaInfo.RegisteredResources == null || soaInfo.RegisteredResources.Count == 0)
{
logger.Warn($"There's no registered instance in current service : {soaInfo.ServiceId}");
return(null);
}
// 如果soa服务对应的app不存在任何实例，那么soa服务也不可以被访问
if (appInfo.Instances == null || appInfo.Instances.Count == 0)
{
logger.Warn($"There's no instance in current app : {appInfo.AppId}");
return(null);
}
List <string> list = new List <string>();
foreach (var item in soaInfo.RegisteredResources)
{
// 根据在Soa中注册的实例Id，在app信息中查找实例是否存在，并且校验实例的状态
var instance = appInfo.Instances.Find
(p => p.InstanceId.Equals(item.InstanceId, StringComparison.InvariantCultureIgnoreCase));
if (instance == null)
{
logger.Warn($"Althrough this instances '{item.InstanceId}' was registered in soa service '{soaInfo.ServiceId}'," +
$" it is no longer in the app's resource list : {appInfo.AppId}");
continue;
}
var status = provider.GetIntProperty(item.InstanceId);
logger.Info($"Instance status : {item.InstanceId}, {status}");
if (VerifyInstanceStatus(status) == false)
{
continue;
}
// 获取实例的具体资源
var address = $"{instance.ResourceId}:{instance.Port}";
logger.Info($"Found available instance {item.InstanceId} of {appInfo.AppId} for service : " +
$"{soaInfo.ServiceId}, resource : {address}");
list.Add(address);
}
return(list);
}
