Steeltoe服务注册表发现，并为解析的url添加主机名前缀。

Question

我正在使用PCF Service Registry注册我的微服务，并使用discovery client解析服务间调用的实际服务urls，如下所示

[Route("api/[controller]")]
    public class CustomerController: Controller
    {
        private DiscoveryHttpClientHandler discHttpHandler;

        private ILogger<ValuesController> logger;

        private const string RANDOM_CUSTOMER_URL = "https://CustomerService/api/v1/customer/";

        //private const string RANDOM_CUSTOMER_URL = "http://localhost:58227/api/v1/customer/";

        public CustomerController(IDiscoveryClient client, ILogger<ValuesController> logger)
        {
            this.logger = logger;
            this.discHttpHandler = new DiscoveryHttpClientHandler(client);
        }

        /// <summary>
        /// Retrieves the customer name by invoking Customer Service via 
        /// Service registry lookup
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [Route("GetCustomerName/{id}")]
        [HttpGet]
        public async Task<IActionResult> GetCustomerName(int id)
        {
            try
            {
                var client = GetClient();
                var resString = await client.GetAsync(RANDOM_CUSTOMER_URL + id).
                    Result.Content.ReadAsStringAsync();
                var respObj = JsonConvert.DeserializeObject<ApiResponse<CustomerDTO>>(resString);
                if (respObj != null)
                {
                    return Ok(new { CustomerName = respObj.Result.FirstName + ", " + respObj.Result.LastName });
                }
                return NotFound();
            }
            catch (Exception ex)
            {
                logger.LogError(default(EventId), ex, ex.ToString());
                return StatusCode(500);
            }
        }

        /// <summary>
        /// Create an Http client backed by Steeltoe's DiscoveryHttpClientHandler
        /// </summary>
        /// <returns></returns>
        private HttpClient GetClient()
        {
            var client = new HttpClient(discHttpHandler, false);
            return client;
        }
    }

这工作得很好，我能够解析目标服务url。但是存在支持接入网关主机名的新要求，例如解析的url应该以接入网关的dns名称作为前缀，例如http://GatewayUrl/CustomerService/api/v1/customers。我不知道如何在Eureka配置中实现这一点。我尝试将主机名放在http://steeltoe.io/docs/steeltoe-discovery/中提到的eureka:instance configuration中，但最终得到的是与前面一样解析的url。对此有什么想法。提前谢谢。

Answer 1

要使用非自动配置的主机名注册服务，请将主机名置于eureka:instance:hostName中，并将eureka:instance:registrationMethod设置为hostname