使用Spring Cloud连接器访问CloudFoundry用户提供的服务 [英] Accessing CloudFoundry user-provided services using Spring Cloud connectors

问题描述

我正在尝试使用Spring Cloud从Cloud Foundry应用程序中使用通用REST服务。

I'm trying to use Spring Cloud to consume a generic REST service from a Cloud Foundry app.

此服务是使用Spring Boot创建的，如下所示：

This service is created using Spring Boot, as follows:

package com.something;

@RestController
public class DemoServiceController {
    @RequestMapping("/sayHi")
    public String sayHi() {
        return "Hello!";
    }
}

这很好用 - 我可以访问 http://www.example.com/srv/demo/sayHi 并获取Hello！背部。

This works fine - I can access http://www.example.com/srv/demo/sayHi and get "Hello!" back.

接下来，我使用CF-CLI创建了一个用户提供的服务实例，并将其绑定到我的应用程序。我现在可以在 VCAP_SERVICES 中看到绑定服务。

Next, I created a user-provided service instance using the CF-CLI and bound it to my app. I can now see the bound service in VCAP_SERVICES.

cf cups my-demo-service -p '{"url":"http://www.example.com/srv/demo/"}'
cf bs my-demo-app my-demo-service

接下来，如描述这里，我将这个bean添加到我的应用程序的Spring配置中， connector-type 设置为原始控制器（我也引用了它）。

Next, as described here, I added this bean to my app's Spring config, with the connector-type set to my original controller (I have a reference to it as well).

<cloud:service id="myDemoService"
               service-name="my-demo-service"
               connector-type="com.something.DemoServiceController"
               />

现在当我自动连接myDemoService进入我的应用程序，

Now when I auto-wire "myDemoService" into my app,

@Autowired
private DemoController myDemoService;

我收到错误消息：

找不到指定类型的服务。

No services of the specified type could be found.

我确保包含所有必需的依赖项，包括 spring-cloud-spring-service-connector 和 spring-cloud-cloudfoundry-connector 。

I've made sure to include all required dependencies, including spring-cloud-spring-service-connector and spring-cloud-cloudfoundry-connector.

这里出了什么问题？我给出了错误的bean参数吗？非常感谢任何帮助。

What's going wrong here? Am I giving the wrong bean parameters? Any help is much appreciated.

推荐答案

Spring Cloud Connectors不知道如何处理此服务，因为每个支持的服务必须属于已知类型（MySQL，Postgres，Redis，MongoDB，RabbitMQ等）。将连接器类型设置为Controller类将无法执行所需操作。

Spring Cloud Connectors won't know what to do with this service, as each supported service must be of a known type (MySQL, Postgres, Redis, MongoDB, RabbitMQ, etc). Setting the connector-type to your Controller class won't do what you want.

您需要做的是创建自定义连接器扩展。以下是一个项目的示例： https://github.com/cf -platform-eng / spring-boot-cities 。

What you will need to do is to create a custom Connectors extension. Here's an example of a project that does that: https://github.com/cf-platform-eng/spring-boot-cities.

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