fieldFilter组件：字段过滤器。可以对msg和metadata字段进行过滤。

配置

字段	类型	说明	默认值
checkAllKeys	boolean	是否满足所有field key存在	false
dataNames	string	msg data字段key，多个与逗号隔开	无
metadataNames	string	metadata字段key，多个与逗号隔开	无

Relation Type

• True: 把消息发送到True链
• False: 把消息发送到False链
• Failure: 执行失败，把消息发送到Failure链

执行结果

该组件不会改变msg、metadata和msgType内容。

配置示例

  {
    "id": "s1",
    "type": "fieldFilter",
    "name": "字段过滤",
    "configuration": {
      "checkAllKeys": true,
      "dataNames": "temperature",
      "metadataNames": "productType,name"
    }
  }

应用示例

如果msg包含temperature字段,则把消息推送到：http://192.168.136.26:9099/app1/api/msg，否则推送到：http://192.168.136.26:9099/app2/api/msg

{
  "ruleChain": {
    "id":"rule01",
    "name": "测试规则链",
    "root": true
  },
  "metadata": {
    "nodes": [
      {
        "id": "s1",
        "type": "fieldFilter",
        "name": "过滤",
        "configuration": {
          "dataNames": "temperature"
        }
      },
      {
        "id": "s2",
        "type": "restApiCall",
        "name": "推送数据-app2",
        "configuration": {
          "restEndpointUrlPattern": "http://192.168.136.26:9099/app1/api/msg",
          "requestMethod": "POST",
          "maxParallelRequestsCount": 200
        }
      },
      {
        "id": "s3",
        "type": "restApiCall",
        "name": "推送数据-app2",
        "configuration": {
          "restEndpointUrlPattern": "http://192.168.136.26:9099/app2/api/msg",
          "requestMethod": "POST",
          "maxParallelRequestsCount": 200
        }
      }
    ],
    "connections": [
      {
        "fromId": "s1",
        "toId": "s2",
        "type": "True"
      },
      {
        "fromId": "s1",
        "toId": "s3",
        "type": "False"
      }
    ]
  }
}