Fiware Orion上下文代理订阅条件不起作用

时间:2016-05-25 12:30:37

标签: fiware fiware-orion

我正在使用Orion Context Broker版本1.1.0

我的数据库中只有一个实体:

{
  "id"=>"Room1",
  "type"=>"Room",
  "temperature"=>{"type"=>"none", "value"=>10, "metadata"=>{}}
}

我没有subscription

然后我创建了3 subscriptions

[
{
  "subject"=>{"entities"=>[{"id"=>"Room1", "idPattern"=>"", "type"=>""}],
  "condition"=>{"attrs"=>["temperature"], "expression"=>{"q"=>"temperature>10"}}}
},
 {
  "subject"=>{"entities"=>[{"id"=>"Room1", "idPattern"=>"", "type"=>""}],
  "condition"=>{"attrs"=>["temperature"], "expression"=>{"q"=>"temperature<10"}}}
},
 {
  "subject"=>{"entities"=>[{"id"=>"Room1", "idPattern"=>"", "type"=>""}],
  "condition"=>{"attrs"=>["temperature"], "expression"=>{"q"=>"temperature==10"}}}
}
]

正如您所看到的,差异仅在于表达式: 温度&gt; 10 温度&lt; 10 temperature == 10

因此,每当我更改 Room1 温度时,我应该只有一个subscription触发通知。

但它不能正常工作!!!

每次我更改温度时,我都会收到3条通知。

但是,创建subscriptions时,只有其中一个触发了通知,具体取决于Room1的temperature值。它按预期工作。

但是当Room1 temperature更改时,它无法正常工作并触发所有3个通知。

修改 GET / v2 / subscriptions操作的完整输出:

[
  {
    "id"=>"574716a22fe8cdc00a696a94",
    "expires"=>"2017-04-05T14:00:00.00Z",
    "status"=>"active",
    "subject"=>{
      "entities"=>[{"id"=>"Room1", "idPattern"=>"", "type"=>""}],    
      "condition"=>{"attrs"=>["temperature"], 
      "expression"=>{"q"=>"temperature>10"}}
    }, 
    "notification"=>{"attrs"=>["temperature"], "http"=>{"url"=>"http://localhost:1028/accumulate"}},
    "throttling"=>5
  },
  {
    "id"=>"574716a22fe8cdc00a696a95",
    "expires"=>"2017-04-05T14:00:00.00Z",
    "status"=>"active",
    "subject"=>{
      "entities"=>[{"id"=>"Room1", "idPattern"=>"", "type"=>""}],  
      "condition"=>{"attrs"=>["temperature"], 
      "expression"=>{"q"=>"temperature<10"}}
    },
    "notification"=>{"attrs"=>["temperature"], "http"=>{"url"=>"http://localhost:1028/accumulate"}},
    "throttling"=>5},
  {
    "id"=>"574716a22fe8cdc00a696a96",
    "expires"=>"2017-04-05T14:00:00.00Z",
    "status"=>"active",
    "subject"=>{
      "entities"=>[{"id"=>"Room1", "idPattern"=>"", "type"=>""}], 
      "condition"=>{"attrs"=>["temperature"], 
      "expression"=>{"q"=>"temperature==10"}}
    },
    "notification"=>{"timesSent"=>2, "lastNotification"=>"2016-05-26T15:30:42.00Z", "attrs"=>["temperature"], "http"=>{"url"=>"http://localhost:1028/accumulate"}},
    "throttling"=>5
  }
]

编辑2:添加一些方案:

  1. Room1 temperature更改为11
  2. 有相同的输出,但是 [...{"timesSent"=>1}..., ...{"timesSent"=>1}..., ...{"timesSent"=>3}...]
  3. Room1 temperature更改为10
  4. 有相同的输出,但是 [...{"timesSent"=>2}..., ...{"timesSent"=>2}..., ...{"timesSent"=>4}...]
  5. Room1 temperature更改为9
  6. 有相同的输出,但是 [...{"timesSent"=>3}..., ...{"timesSent"=>3}..., ...{"timesSent"=>5}...]

1 个答案:

答案 0 :(得分:0)

这是由于Orion 1.1中的订阅缓存管理存在问题。因此,该版本的解决方案是使用-noCache CLI option禁用缓存。

已发现错误并a github issue has been created about it。它将在更新的猎户座版本中修复。

编辑:该错误已在开发分支中解决,因此它将在Orion 1.2中准备好,将于2016年6月初发布。