/// <summary>
/// 服务订阅
/// </summary>
/// <param name="serviceType">服务类型</param>
/// <param name="host">服务Host</param>
/// <param name="port">服务端口</param>
/// <param name="serializerName">序列化器名称</param>
/// <returns></returns>
public IServicePublisher Publish(Type serviceType, string host, int port, string serializerName)
{
logger.LogDebug($"Publish service begin. ServiceType={serviceType.FullName}, Host={host}, Port={port}, SerializerName={serializerName}");
var serviceAttr = serviceType.GetServiceAttribute();
if (serviceAttr == null)
{
throw new InvalidOperationException($"ServiceType has not set ServiceAttribute. Type={serviceType.FullName}");
}
var serviceId = serviceAttr.ServiceId;
CreateBaseNode();
var servicePath = CreateServiceNode(serviceId);
var servicePublishInfo = new ServicePublishInfo()
{
Host = host,
Port = port,
SerializerName = serializerName
};
CreateHostNode(servicePath, servicePublishInfo);
logger.LogDebug($"Publish service finished. ServiceType={serviceType.FullName}, Host={host}, Port={port}, SerializerName={serializerName}");
return(this);
}
private void CreateHostNode(string servicePath, ServicePublishInfo servicePublishInfo)
{
var hostName = Utils.GetHostName(servicePublishInfo.Host, servicePublishInfo.Port);
var hostPath = GetHostPath(servicePath, hostName);
var data = MessagePackSerializer.Serialize(servicePublishInfo);
if (!client.ExistsAsync(hostPath).Result)
{
try
{
client.CreateEphemeralAsync(hostPath, data).Wait();
}
catch (AggregateException ex)
{
if (!(ex.InnerException is NodeExistsException))
{
throw ex;
}
}
}
}