如何配置Cepheus，使其将json返回orion而不是xml？

Question

最近，我开始使用Cepheus，但是在文档之后，我无法让它插入orion实体中。查看accumulator.py的错误之处，我发现cepheus向orion发送xml。在orion中，xml不是被废弃了吗？

cepheus cep中使用的配置：

{
  "host":"http://localhost:1028",
  "in":[
    {
      "id":"Room.*",
      "type":"Room",
      "isPattern":true,
      "providers":[
        "http://localhost:1027"
      ],
      "attributes":[
        { "name":"temperature", "type":"double" },
        { "name":"floor", "type":"string" }
      ]
    }
  ],
  "out":[
    {
      "id":"Floor1",
      "type":"Floor",
      "brokers":[
        {
          "url":"http://localhost:1029"
        }
      ],
      "attributes":[
        { "name":"temperature", "type":"double" }
      ]
    }
  ],
  "statements":[
    "INSERT INTO Floor SELECT floor as id, avg(temperature) as temperature FROM Room.win:time(10 min) GROUP BY floor OUTPUT LAST EVERY 10 sec"
  ]
}

• 1029猎户座经纪人
• 1028头仙
• 1027 Cepheus经纪人

我对accumulator.py的反应是：

127.0.0.1 - - [13/May/2016 05:50:46] "POST /ngsi10/updateContext HTTP/1.1" 200 -
POST http://localhost:1029/ngsi10/updateContext
Content-Length: 404
User-Agent: Apache-HttpAsyncClient/4.1 (Java/1.8.0_91)
Connection: Keep-Alive
Host: localhost:1029
Accept: application/xml
Content-Type: application/xml

<updateContextRequest><updateAction>APPEND</updateAction><contextElementList><contextElement><entityId type="Floor" isPattern="false"><id>Floor1</id></entityId><contextAttributeList><contextAttribute><name>temperature</name><type>double</type><contextValue>22.333333333333332</contextValue><metadata/></contextAttribute></contextAttributeList></contextElement></contextElementList></updateContextRequest>=======================================

如果在Cepheus Broker如果我启用了

remote.forward.updateContext = true

通过正确的代理配置，我得到以下错误：

2016-05-13 06:07:08.504  WARN 12977 --- [nio-1027-exec-8] c.o.c.broker.controller.NgsiController   : UpdateContext failed for http://localhost:1026: org.springframework.web.client.HttpClientErrorException: 415 Unsupported Media Type

我认为这个错误也是由于查询的xml格式而产生的。

Answer 1

Cepheus 0.1.16在0.28之后与Orion不兼容，因为XML支持被删除了。为了跟踪这个问题，我向Cepheus添加了一个问题：https://github.com/Orange-OpenSource/fiware-cepheus/issues/51

更新是以JSON作为NGSI交换的默认格式发布的。