{"id":9498,"date":"2015-10-06T12:58:32","date_gmt":"2015-10-06T17:58:32","guid":{"rendered":"http:\/\/www.multitech.net\/developer\/?page_id=9498"},"modified":"2022-03-30T19:48:08","modified_gmt":"2022-03-31T00:48:08","slug":"node-red-and-rest-api-cloud-service","status":"publish","type":"page","link":"https:\/\/www.multitech.net\/developer\/software\/aep\/node-red-and-rest-api-cloud-service\/","title":{"rendered":"Connect Node-RED to Any Cloud Service’s REST API"},"content":{"rendered":"

NOTE:\u00a0<\/strong>Support for Node-RED\/Node.js on Multitech AT91SAM9G25-based products has been discontinued within mPower 5.3. For mPower 5.3.3 to 5.3.8, users can\u00a0install Node-RED as a custom application.\u00a0mPower 6.0 or later no longer supports this custom app option.<\/strong>\u00a0<\/em><\/p>\n

The following instructions are still applicable for mPower MTCDT 5.2.1 and MTCAP 5.2.1 and earlier on all devices. And also applies to any non-AT91SAM9G25-based products.<\/p>\n

Refer to this alterative example using Python of a default application and server with API implementation for a distributed LoRaWAN network:\u00a0https:\/\/github.com\/MultiTechSystems\/lorawan-app-connect<\/a>.<\/p>\n

For more details on other methods and examples to create custom applications, see\u00a0Creating a Custom Application<\/a>.<\/p>\n

Using the function<\/strong> and http request <\/strong>nodes the Conduit\u00ae\u00a0<\/sup>can be configured to communicate with any REST API cloud service.<\/p>\n

    \n
  1. Drag the following nodes onto the sheet and connect them sequentially: inject<\/strong>, function<\/strong>, http request<\/strong>, and debug<\/strong><\/li>\n
  2. Double click on the function node and enter the following example code with settings from your cloud service’s documentation. Xively Example<\/b>\n
    var apikey = \"<YOUR-API-KEY>\";\r\nvar feed_id = \"<YOUR-FEED-ID>\";\r\n\r\nvar data = {};\r\ndata[\"version\"] = \"1.0.0\";\r\ndata[\"datastreams\"] = [];\r\ndata[\"datastreams\"].push({\"id\":\"one\", \"current_value\":\"100.00\"});\r\nmsg.method = \"PUT\";\r\nmsg.headers = { \"X-ApiKey\": apikey };\r\nmsg.payload = JSON.stringify(data);\r\nmsg.url = \"https:\/\/api.xively.com\/v2\/feeds\" + \"\/\" + feed_id;\r\nreturn msg;<\/pre>\n
    AT&T M2X Example<\/strong><\/p>\n
    var dev_id = \"<DEV_ID>\";\r\nvar api_key = \"<API_KEY>\";\r\nvar stream_name = \"<STREAM_NAME>\";\r\n\r\nvar dev_url = \"http:\/\/api-m2x.att.com\/v2\/devices\/\";\r\nvar stream = \"\/streams\/\" + stream_name + \"\/value\";\r\n\r\nvar data = {\"value\": 30};\r\n\r\nvar msg = {\r\n\t\"method\" : \"PUT\",\r\n\t\"url\" : dev_url + dev_id + stream,\r\n\t\"headers\" : {\r\n\t\t\"Content-Type\": \"application\/json\",\r\n\t\t\"X-M2X-KEY\": api_key\r\n\t},\r\n\t\"payload\" : JSON.stringify(data)\r\n};\r\n\r\nreturn msg;<\/pre>\n<\/li>\n
  3. Double click on the\u00a0http request<\/strong> node, and change the Method<\/strong> to – set by msg.method – \"edit-http-request\"<\/a> <\/strong><\/li>\n
  4. Double click on the debug<\/strong> node and change Output<\/strong> to complete msg object<\/strong>.<\/li>\n
  5. Press OK and Deploy<\/li>\n
  6. Pressing the inject node button will trigger the http request node to fire. You should see something like this:<\/li>\n<\/ol>\n
    \"http-request-debug\"<\/a><\/p>\n
     <\/p>\n
    Troubleshooting<\/h4>\n