ekuiper-new/docs/en_US/rules/sinks/rest.md

REST action

The action is used for publish output message into a RESTful API.

Property name	Optional	Description
method	true	The http method for the RESTful API. It is a case insensitive string whose value is among "get", "post", "put", "patch", "delete" and "head". The default value is "get".
url	false	The RESTful API endpoint, such as https://www.example.com/api/dummy
bodyType	true	The type of the body. Currently, 3 types are supported: "none", "raw" and "form". For "get" and "head", no body is required so the default value is "none". For other http methods, the default value is "raw".
timeout	true	The timeout (milliseconds) for a http request, defaults to 5000 ms
headers	true	The additional headers to be set for the http request.
sendSingle	true	The output messages are received as an array. This is indicate whether to send the results one by one. If false, the output message will be {"result":"${the string of received message}"}. For example, {"result":"[{\"count\":30},"\"count\":20}]"}. Otherwise, the result message will be sent one by one with the actual field name. For the same example as above, it will send {"count":30}, then send {"count":20} to the RESTful endpoint.Default to false.

Below is sample configuration for connecting to Edgex Foundry core command.

    {
      "rest": {
        "url": "http://127.0.0.1:48082/api/v1/device/cc622d99-f835-4e94-b5cb-b1eff8699dc4/command/51fce08a-ae19-4bce-b431-b9f363bba705",       
        "method": "post",
        "sendSingle": true
      }
    }